Make core/ includes absolute, remove subfolders from include path

This allows more consistency in the manner we include core headers,
where previously there would be a mix of absolute, relative and
include path-dependent includes.

873 files changed, 2120 insertions, 2028 deletions

diff --git a/SConstruct b/SConstruct
index 3bbe97bfe7..3f3976555d 100644
--- a/SConstruct
+++ b/SConstruct
@@ -224,7 +224,7 @@ Help(opts.GenerateHelpText(env_base))  # generate help
 
 # add default include paths
 
-env_base.Append(CPPPATH=['#core', '#core/math', '#editor', '#drivers', '#'])
+env_base.Append(CPPPATH=['#editor', '#drivers', '#'])
 
 # configure ENV for platform
 env_base.platform_exporters = platform_exporters
diff --git a/core/SCsub b/core/SCsub
index c8e2e10b9f..a6365bf925 100644
--- a/core/SCsub
+++ b/core/SCsub
@@ -18,7 +18,7 @@ for x in env.global_defaults:
     gd_inc += '#include "platform/' + x + '/globals/global_defaults.h"\n'
     gd_call += "\tregister_" + x + "_global_defaults();\n"
 
-gd_cpp = '#include "project_settings.h"\n'
+gd_cpp = '#include "core/project_settings.h"\n'
 gd_cpp += gd_inc
 gd_cpp += "void ProjectSettings::register_global_defaults() {\n" + gd_call + "\n}\n"
 
@@ -52,7 +52,7 @@ if ("SCRIPT_AES256_ENCRYPTION_KEY" in os.environ):
 
 # NOTE: It is safe to generate this file here, since this is still executed serially
 with open("script_encryption_key.gen.cpp", "w") as f:
-    f.write("#include \"project_settings.h\"\nuint8_t script_encryption_key[32]={" + txt + "};\n")
+    f.write("#include \"core/project_settings.h\"\nuint8_t script_encryption_key[32]={" + txt + "};\n")
 
 
 # Add required thirdparty code. Header paths are hardcoded, we don't need to append
diff --git a/core/allocators.h b/core/allocators.h
index e17ab298d6..840b117958 100644
--- a/core/allocators.h
+++ b/core/allocators.h
@@ -31,7 +31,8 @@
 #ifndef ALLOCATORS_H
 #define ALLOCATORS_H
 
-#include "os/memory.h"
+#include "core/os/memory.h"
+
 template <int PREALLOC_COUNT = 64, int MAX_HANDS = 8>
 class BalloonAllocator {
 
diff --git a/core/array.cpp b/core/array.cpp
index ebad0df126..9708452850 100644
--- a/core/array.cpp
+++ b/core/array.cpp
@@ -30,10 +30,10 @@
 
 #include "array.h"
 
-#include "hashfuncs.h"
-#include "object.h"
-#include "variant.h"
-#include "vector.h"
+#include "core/hashfuncs.h"
+#include "core/object.h"
+#include "core/variant.h"
+#include "core/vector.h"
 
 class ArrayPrivate {
 public:
diff --git a/core/array.h b/core/array.h
index c824c9b4f7..fa5113a376 100644
--- a/core/array.h
+++ b/core/array.h
@@ -31,7 +31,8 @@
 #ifndef ARRAY_H
 #define ARRAY_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
+
 class Variant;
 class ArrayPrivate;
 class Object;
diff --git a/core/bind/core_bind.cpp b/core/bind/core_bind.cpp
index 2bd271205a..57654e96dc 100644
--- a/core/bind/core_bind.cpp
+++ b/core/bind/core_bind.cpp
@@ -30,14 +30,14 @@
 
 #include "core_bind.h"
 
+#include "core/io/file_access_compressed.h"
+#include "core/io/file_access_encrypted.h"
+#include "core/io/json.h"
+#include "core/io/marshalls.h"
+#include "core/math/geometry.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
 #include "core/project_settings.h"
-#include "geometry.h"
-#include "io/file_access_compressed.h"
-#include "io/file_access_encrypted.h"
-#include "io/json.h"
-#include "io/marshalls.h"
-#include "os/keyboard.h"
-#include "os/os.h"
 
 #include "thirdparty/misc/base64.h"
 
diff --git a/core/bind/core_bind.h b/core/bind/core_bind.h
index 21aea12b23..3a913e01ed 100644
--- a/core/bind/core_bind.h
+++ b/core/bind/core_bind.h
@@ -31,15 +31,15 @@
 #ifndef CORE_BIND_H
 #define CORE_BIND_H
 
-#include "image.h"
-#include "io/compression.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "os/semaphore.h"
-#include "os/thread.h"
+#include "core/image.h"
+#include "core/io/compression.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
 
 class _ResourceLoader : public Object {
 	GDCLASS(_ResourceLoader, Object);
diff --git a/core/class_db.cpp b/core/class_db.cpp
index eceefa1ee4..dcc07f8f41 100644
--- a/core/class_db.cpp
+++ b/core/class_db.cpp
@@ -30,9 +30,9 @@
 
 #include "class_db.h"
 
-#include "engine.h"
-#include "os/mutex.h"
-#include "version.h"
+#include "core/engine.h"
+#include "core/os/mutex.h"
+#include "core/version.h"
 
 #define OBJTYPE_RLOCK RWLockRead _rw_lockr_(lock);
 #define OBJTYPE_WLOCK RWLockWrite _rw_lockw_(lock);
diff --git a/core/class_db.h b/core/class_db.h
index 66a67f6c9f..11cc3033cf 100644
--- a/core/class_db.h
+++ b/core/class_db.h
@@ -31,16 +31,16 @@
 #ifndef CLASS_DB_H
 #define CLASS_DB_H
 
-#include "method_bind.h"
-#include "object.h"
-#include "print_string.h"
+#include "core/method_bind.h"
+#include "core/object.h"
+#include "core/print_string.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
 /**	To bind more then 6 parameters include this:
- *  #include "method_bind_ext.gen.inc"
+ *  #include "core/method_bind_ext.gen.inc"
  */
 
 #define DEFVAL(m_defval) (m_defval)
diff --git a/core/color.cpp b/core/color.cpp
index 17c9e2daeb..55dd1ec6b9 100644
--- a/core/color.cpp
+++ b/core/color.cpp
@@ -30,10 +30,10 @@
 
 #include "color.h"
 
-#include "color_names.inc"
-#include "map.h"
-#include "math_funcs.h"
-#include "print_string.h"
+#include "core/color_names.inc"
+#include "core/map.h"
+#include "core/math/math_funcs.h"
+#include "core/print_string.h"
 
 uint32_t Color::to_argb32() const {
 
diff --git a/core/color.h b/core/color.h
index 00f4c9e9e8..add61343ff 100644
--- a/core/color.h
+++ b/core/color.h
@@ -31,8 +31,8 @@
 #ifndef COLOR_H
 #define COLOR_H
 
-#include "math_funcs.h"
-#include "ustring.h"
+#include "core/math/math_funcs.h"
+#include "core/ustring.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/color_names.inc b/core/color_names.inc
index 3ae42648d0..e126bfe0f8 100644
--- a/core/color_names.inc
+++ b/core/color_names.inc
@@ -1,5 +1,5 @@
 // Names from https://en.wikipedia.org/wiki/List_of_colors (through https://raw.githubusercontent.com/SuperUserNameMan/color_to_name/616a7cddafefda91478b7bc26167de97fb5badb1/godot_version.gd), slightly edited and normalized
-#include "map.h"
+#include "core/map.h"
 
 static Map<String, Color> _named_colors;
 static void _populate_named_colors() {
diff --git a/core/command_queue_mt.cpp b/core/command_queue_mt.cpp
index a39c920dfa..1b3a74bd0d 100644
--- a/core/command_queue_mt.cpp
+++ b/core/command_queue_mt.cpp
@@ -30,7 +30,7 @@
 
 #include "command_queue_mt.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 void CommandQueueMT::lock() {
 
diff --git a/core/command_queue_mt.h b/core/command_queue_mt.h
index 7978eaa7bf..5911cf5006 100644
--- a/core/command_queue_mt.h
+++ b/core/command_queue_mt.h
@@ -31,11 +31,11 @@
 #ifndef COMMAND_QUEUE_MT_H
 #define COMMAND_QUEUE_MT_H
 
-#include "os/memory.h"
-#include "os/mutex.h"
-#include "os/semaphore.h"
-#include "simple_type.h"
-#include "typedefs.h"
+#include "core/os/memory.h"
+#include "core/os/mutex.h"
+#include "core/os/semaphore.h"
+#include "core/simple_type.h"
+#include "core/typedefs.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/compressed_translation.cpp b/core/compressed_translation.cpp
index 46df63066b..7dd5308fab 100644
--- a/core/compressed_translation.cpp
+++ b/core/compressed_translation.cpp
@@ -30,7 +30,7 @@
 
 #include "compressed_translation.h"
 
-#include "pair.h"
+#include "core/pair.h"
 
 extern "C" {
 #include "thirdparty/misc/smaz.h"
diff --git a/core/compressed_translation.h b/core/compressed_translation.h
index ccc47d0bf6..b3d193b478 100644
--- a/core/compressed_translation.h
+++ b/core/compressed_translation.h
@@ -31,7 +31,7 @@
 #ifndef COMPRESSED_TRANSLATION_H
 #define COMPRESSED_TRANSLATION_H
 
-#include "translation.h"
+#include "core/translation.h"
 
 class PHashTranslation : public Translation {
 
diff --git a/core/core_string_names.h b/core/core_string_names.h
index dcbce14aac..3fdb240408 100644
--- a/core/core_string_names.h
+++ b/core/core_string_names.h
@@ -31,7 +31,7 @@
 #ifndef CORE_STRING_NAMES_H
 #define CORE_STRING_NAMES_H
 
-#include "string_db.h"
+#include "core/string_db.h"
 
 class CoreStringNames {
 
diff --git a/core/cowdata.h b/core/cowdata.h
index 6a8f644d53..9e75d4ed55 100644
--- a/core/cowdata.h
+++ b/core/cowdata.h
@@ -31,8 +31,8 @@
 #ifndef COWDATA_H_
 #define COWDATA_H_
 
-#include "os/memory.h"
-#include "safe_refcount.h"
+#include "core/os/memory.h"
+#include "core/safe_refcount.h"
 
 template <class T>
 class Vector;
diff --git a/core/dictionary.cpp b/core/dictionary.cpp
index 9cc913fa0d..ba32606819 100644
--- a/core/dictionary.cpp
+++ b/core/dictionary.cpp
@@ -30,9 +30,9 @@
 
 #include "dictionary.h"
 
-#include "ordered_hash_map.h"
-#include "safe_refcount.h"
-#include "variant.h"
+#include "core/ordered_hash_map.h"
+#include "core/safe_refcount.h"
+#include "core/variant.h"
 
 struct DictionaryPrivate {
 
diff --git a/core/dictionary.h b/core/dictionary.h
index dbf2233819..9950fb6361 100644
--- a/core/dictionary.h
+++ b/core/dictionary.h
@@ -31,9 +31,10 @@
 #ifndef DICTIONARY_H
 #define DICTIONARY_H
 
-#include "array.h"
-#include "list.h"
-#include "ustring.h"
+#include "core/array.h"
+#include "core/list.h"
+#include "core/ustring.h"
+
 class Variant;
 
 struct DictionaryPrivate;
diff --git a/core/dvector.h b/core/dvector.h
index e03a755e6c..0d0848a19a 100644
--- a/core/dvector.h
+++ b/core/dvector.h
@@ -31,12 +31,12 @@
 #ifndef DVECTOR_H
 #define DVECTOR_H
 
-#include "os/copymem.h"
-#include "os/memory.h"
-#include "os/rw_lock.h"
-#include "pool_allocator.h"
-#include "safe_refcount.h"
-#include "ustring.h"
+#include "core/os/copymem.h"
+#include "core/os/memory.h"
+#include "core/os/rw_lock.h"
+#include "core/pool_allocator.h"
+#include "core/safe_refcount.h"
+#include "core/ustring.h"
 
 struct MemoryPool {
 
diff --git a/core/engine.cpp b/core/engine.cpp
index 7c8024b946..fceb602dcf 100644
--- a/core/engine.cpp
+++ b/core/engine.cpp
@@ -30,11 +30,11 @@
 
 #include "engine.h"
 
-#include "authors.gen.h"
-#include "donors.gen.h"
-#include "license.gen.h"
-#include "version.h"
-#include "version_hash.gen.h"
+#include "core/authors.gen.h"
+#include "core/donors.gen.h"
+#include "core/license.gen.h"
+#include "core/version.h"
+#include "core/version_hash.gen.h"
 
 void Engine::set_iterations_per_second(int p_ips) {
 
diff --git a/core/engine.h b/core/engine.h
index 031ba29cd6..b3c385c9f8 100644
--- a/core/engine.h
+++ b/core/engine.h
@@ -31,10 +31,10 @@
 #ifndef ENGINE_H
 #define ENGINE_H
 
-#include "list.h"
-#include "os/main_loop.h"
-#include "ustring.h"
-#include "vector.h"
+#include "core/list.h"
+#include "core/os/main_loop.h"
+#include "core/ustring.h"
+#include "core/vector.h"
 
 class Engine {
 
diff --git a/core/error_macros.cpp b/core/error_macros.cpp
index 5786802930..c1a0dd0dfc 100644
--- a/core/error_macros.cpp
+++ b/core/error_macros.cpp
@@ -30,7 +30,7 @@
 
 #include "error_macros.h"
 
-#include "io/logger.h"
+#include "core/io/logger.h"
 #include "os/os.h"
 
 bool _err_error_exists = false;
diff --git a/core/error_macros.h b/core/error_macros.h
index bee738ceea..8cec18d24f 100644
--- a/core/error_macros.h
+++ b/core/error_macros.h
@@ -31,7 +31,7 @@
 #ifndef ERROR_MACROS_H
 #define ERROR_MACROS_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 /**
  * Error macros. Unlike exceptions and asserts, these macros try to maintain consistency and stability
  * inside the code. It is recommended to always return processable data, so in case of an error, the
diff --git a/core/func_ref.h b/core/func_ref.h
index 681fe747d6..930c376abf 100644
--- a/core/func_ref.h
+++ b/core/func_ref.h
@@ -31,7 +31,7 @@
 #ifndef FUNC_REF_H
 #define FUNC_REF_H
 
-#include "reference.h"
+#include "core/reference.h"
 
 class FuncRef : public Reference {
 
diff --git a/core/global_constants.cpp b/core/global_constants.cpp
index 962881e720..c70f960a66 100644
--- a/core/global_constants.cpp
+++ b/core/global_constants.cpp
@@ -30,10 +30,10 @@
 
 #include "global_constants.h"
 
-#include "object.h"
-#include "os/input_event.h"
-#include "os/keyboard.h"
-#include "variant.h"
+#include "core/object.h"
+#include "core/os/input_event.h"
+#include "core/os/keyboard.h"
+#include "core/variant.h"
 
 struct _GlobalConstant {
 
diff --git a/core/global_constants.h b/core/global_constants.h
index 76f618989c..48f16934a3 100644
--- a/core/global_constants.h
+++ b/core/global_constants.h
@@ -31,7 +31,7 @@
 #ifndef GLOBAL_CONSTANTS_H
 #define GLOBAL_CONSTANTS_H
 
-#include "string_db.h"
+#include "core/string_db.h"
 
 class GlobalConstants {
 public:
diff --git a/core/hash_map.h b/core/hash_map.h
index 2df743ba7d..8620edba73 100644
--- a/core/hash_map.h
+++ b/core/hash_map.h
@@ -31,12 +31,12 @@
 #ifndef HASH_MAP_H
 #define HASH_MAP_H
 
-#include "error_macros.h"
-#include "hashfuncs.h"
-#include "list.h"
-#include "math_funcs.h"
-#include "os/memory.h"
-#include "ustring.h"
+#include "core/error_macros.h"
+#include "core/hashfuncs.h"
+#include "core/list.h"
+#include "core/math/math_funcs.h"
+#include "core/os/memory.h"
+#include "core/ustring.h"
 
 /**
  * @class HashMap
diff --git a/core/hashfuncs.h b/core/hashfuncs.h
index 735e679d1e..457cfadc9c 100644
--- a/core/hashfuncs.h
+++ b/core/hashfuncs.h
@@ -31,12 +31,12 @@
 #ifndef HASHFUNCS_H
 #define HASHFUNCS_H
 
-#include "math_defs.h"
-#include "math_funcs.h"
-#include "node_path.h"
-#include "string_db.h"
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/math/math_defs.h"
+#include "core/math/math_funcs.h"
+#include "core/node_path.h"
+#include "core/string_db.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
 
 /**
  * Hashing functions
diff --git a/core/helper/math_fieldwise.cpp b/core/helper/math_fieldwise.cpp
index ff3f8b3520..20b2341ab0 100644
--- a/core/helper/math_fieldwise.cpp
+++ b/core/helper/math_fieldwise.cpp
@@ -30,7 +30,7 @@
 
 #ifdef TOOLS_ENABLED
 
-#include "core/helper/math_fieldwise.h"
+#include "math_fieldwise.h"
 
 #define SETUP_TYPE(m_type)    \
 	m_type source = p_source; \
diff --git a/core/image.cpp b/core/image.cpp
index 08bb9a35c3..c0002e0cd6 100644
--- a/core/image.cpp
+++ b/core/image.cpp
@@ -30,15 +30,15 @@
 
 #include "image.h"
 
+#include "core/hash_map.h"
 #include "core/io/image_loader.h"
+#include "core/io/resource_loader.h"
+#include "core/math/math_funcs.h"
 #include "core/os/copymem.h"
-#include "hash_map.h"
-#include "math_funcs.h"
-#include "print_string.h"
+#include "core/print_string.h"
 
-#include "io/resource_loader.h"
-#include "math_funcs.h"
 #include "thirdparty/misc/hq2x.h"
+
 #include <stdio.h>
 
 const char *Image::format_names[Image::FORMAT_MAX] = {
diff --git a/core/image.h b/core/image.h
index 6af55ca8d9..11f9380c3c 100644
--- a/core/image.h
+++ b/core/image.h
@@ -31,10 +31,10 @@
 #ifndef IMAGE_H
 #define IMAGE_H
 
-#include "color.h"
-#include "dvector.h"
-#include "rect2.h"
-#include "resource.h"
+#include "core/color.h"
+#include "core/dvector.h"
+#include "core/math/rect2.h"
+#include "core/resource.h"
 
 /**
  *	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/input_map.cpp b/core/input_map.cpp
index ffc8a39da5..51e3f311a9 100644
--- a/core/input_map.cpp
+++ b/core/input_map.cpp
@@ -30,8 +30,8 @@
 
 #include "input_map.h"
 
-#include "os/keyboard.h"
-#include "project_settings.h"
+#include "core/os/keyboard.h"
+#include "core/project_settings.h"
 
 InputMap *InputMap::singleton = NULL;
 
diff --git a/core/input_map.h b/core/input_map.h
index bdec75c65b..8f286277d1 100644
--- a/core/input_map.h
+++ b/core/input_map.h
@@ -31,8 +31,8 @@
 #ifndef INPUT_MAP_H
 #define INPUT_MAP_H
 
-#include "object.h"
-#include "os/input_event.h"
+#include "core/object.h"
+#include "core/os/input_event.h"
 
 class InputMap : public Object {
 
diff --git a/core/io/compression.cpp b/core/io/compression.cpp
index bc3bfcf356..e456a85c65 100644
--- a/core/io/compression.cpp
+++ b/core/io/compression.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "compression.h"
-#include "os/copymem.h"
-#include "project_settings.h"
-#include "zip_io.h"
+
+#include "core/io/zip_io.h"
+#include "core/os/copymem.h"
+#include "core/project_settings.h"
 
 #include "thirdparty/misc/fastlz.h"
 
diff --git a/core/io/compression.h b/core/io/compression.h
index a0ccd539cb..2f770e6aee 100644
--- a/core/io/compression.h
+++ b/core/io/compression.h
@@ -31,7 +31,7 @@
 #ifndef COMPRESSION_H
 #define COMPRESSION_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 class Compression {
 
diff --git a/core/io/config_file.cpp b/core/io/config_file.cpp
index aa06ae5cc0..e2bc0f5d8f 100644
--- a/core/io/config_file.cpp
+++ b/core/io/config_file.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "config_file.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
-#include "variant_parser.h"
+
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
+#include "core/variant_parser.h"
 
 PoolStringArray ConfigFile::_get_sections() const {
 
diff --git a/core/io/config_file.h b/core/io/config_file.h
index ac749bed76..2bc439d413 100644
--- a/core/io/config_file.h
+++ b/core/io/config_file.h
@@ -32,7 +32,7 @@
 #define CONFIG_FILE_H
 
 #include "core/ordered_hash_map.h"
-#include "reference.h"
+#include "core/reference.h"
 
 class ConfigFile : public Reference {
 
diff --git a/core/io/file_access_buffered.cpp b/core/io/file_access_buffered.cpp
index dcaf99e24a..d44c8a9585 100644
--- a/core/io/file_access_buffered.cpp
+++ b/core/io/file_access_buffered.cpp
@@ -30,9 +30,7 @@
 
 #include "file_access_buffered.h"
 
-#include <string.h>
-
-#include "error_macros.h"
+#include "core/error_macros.h"
 
 Error FileAccessBuffered::set_error(Error p_error) const {
 
diff --git a/core/io/file_access_buffered.h b/core/io/file_access_buffered.h
index f4ed47d6bc..a36a9a4603 100644
--- a/core/io/file_access_buffered.h
+++ b/core/io/file_access_buffered.h
@@ -31,10 +31,9 @@
 #ifndef FILE_ACCESS_BUFFERED_H
 #define FILE_ACCESS_BUFFERED_H
 
-#include "os/file_access.h"
-
-#include "dvector.h"
-#include "ustring.h"
+#include "core/dvector.h"
+#include "core/os/file_access.h"
+#include "core/ustring.h"
 
 class FileAccessBuffered : public FileAccess {
 
diff --git a/core/io/file_access_compressed.cpp b/core/io/file_access_compressed.cpp
index d6547ba19f..6290913503 100644
--- a/core/io/file_access_compressed.cpp
+++ b/core/io/file_access_compressed.cpp
@@ -29,7 +29,9 @@
 /*************************************************************************/
 
 #include "file_access_compressed.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
+
 void FileAccessCompressed::configure(const String &p_magic, Compression::Mode p_mode, int p_block_size) {
 
 	magic = p_magic.ascii().get_data();
diff --git a/core/io/file_access_compressed.h b/core/io/file_access_compressed.h
index 587f58a7c6..5be42a6d32 100644
--- a/core/io/file_access_compressed.h
+++ b/core/io/file_access_compressed.h
@@ -31,8 +31,8 @@
 #ifndef FILE_ACCESS_COMPRESSED_H
 #define FILE_ACCESS_COMPRESSED_H
 
-#include "io/compression.h"
-#include "os/file_access.h"
+#include "core/io/compression.h"
+#include "core/os/file_access.h"
 
 class FileAccessCompressed : public FileAccess {
 
diff --git a/core/io/file_access_encrypted.cpp b/core/io/file_access_encrypted.cpp
index 812e881114..28bf55b962 100644
--- a/core/io/file_access_encrypted.cpp
+++ b/core/io/file_access_encrypted.cpp
@@ -30,9 +30,9 @@
 
 #include "file_access_encrypted.h"
 
+#include "core/os/copymem.h"
+#include "core/print_string.h"
 #include "core/variant.h"
-#include "os/copymem.h"
-#include "print_string.h"
 
 #include "thirdparty/misc/aes256.h"
 #include "thirdparty/misc/md5.h"
diff --git a/core/io/file_access_encrypted.h b/core/io/file_access_encrypted.h
index b9365a9fd0..873dbfa7e8 100644
--- a/core/io/file_access_encrypted.h
+++ b/core/io/file_access_encrypted.h
@@ -31,7 +31,7 @@
 #ifndef FILE_ACCESS_ENCRYPTED_H
 #define FILE_ACCESS_ENCRYPTED_H
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 class FileAccessEncrypted : public FileAccess {
 public:
diff --git a/core/io/file_access_memory.cpp b/core/io/file_access_memory.cpp
index c4eb2848b1..4c2aa4294d 100644
--- a/core/io/file_access_memory.cpp
+++ b/core/io/file_access_memory.cpp
@@ -30,10 +30,10 @@
 
 #include "file_access_memory.h"
 
-#include "map.h"
-#include "os/copymem.h"
-#include "os/dir_access.h"
-#include "project_settings.h"
+#include "core/map.h"
+#include "core/os/copymem.h"
+#include "core/os/dir_access.h"
+#include "core/project_settings.h"
 
 static Map<String, Vector<uint8_t> > *files = NULL;
 
diff --git a/core/io/file_access_memory.h b/core/io/file_access_memory.h
index 2136f4cc0c..e474fb0d05 100644
--- a/core/io/file_access_memory.h
+++ b/core/io/file_access_memory.h
@@ -31,7 +31,7 @@
 #ifndef FILE_ACCESS_MEMORY_H
 #define FILE_ACCESS_MEMORY_H
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 class FileAccessMemory : public FileAccess {
 
diff --git a/core/io/file_access_network.cpp b/core/io/file_access_network.cpp
index d72d3ca9f1..8bffe3e88b 100644
--- a/core/io/file_access_network.cpp
+++ b/core/io/file_access_network.cpp
@@ -29,10 +29,11 @@
 /*************************************************************************/
 
 #include "file_access_network.h"
-#include "io/ip.h"
-#include "marshalls.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/io/ip.h"
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 //#define DEBUG_PRINT(m_p) print_line(m_p)
 //#define DEBUG_TIME(m_what) printf("MS: %s - %lli\n",m_what,OS::get_singleton()->get_ticks_usec());
diff --git a/core/io/file_access_network.h b/core/io/file_access_network.h
index be9bdb1af6..7e4669ffd5 100644
--- a/core/io/file_access_network.h
+++ b/core/io/file_access_network.h
@@ -31,10 +31,10 @@
 #ifndef FILE_ACCESS_NETWORK_H
 #define FILE_ACCESS_NETWORK_H
 
-#include "io/stream_peer_tcp.h"
-#include "os/file_access.h"
-#include "os/semaphore.h"
-#include "os/thread.h"
+#include "core/io/stream_peer_tcp.h"
+#include "core/os/file_access.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
 
 class FileAccessNetwork;
 
diff --git a/core/io/file_access_pack.cpp b/core/io/file_access_pack.cpp
index efb4c7a073..e3c8fb9eb8 100644
--- a/core/io/file_access_pack.cpp
+++ b/core/io/file_access_pack.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "file_access_pack.h"
-#include "version.h"
+
+#include "core/version.h"
 
 #include <stdio.h>
 
diff --git a/core/io/file_access_pack.h b/core/io/file_access_pack.h
index f29e431d9a..9e31bcf88a 100644
--- a/core/io/file_access_pack.h
+++ b/core/io/file_access_pack.h
@@ -31,11 +31,11 @@
 #ifndef FILE_ACCESS_PACK_H
 #define FILE_ACCESS_PACK_H
 
-#include "list.h"
-#include "map.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "print_string.h"
+#include "core/list.h"
+#include "core/map.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/print_string.h"
 
 class PackSource;
 
diff --git a/core/io/file_access_zip.h b/core/io/file_access_zip.h
index df83575f6a..4fe0651a55 100644
--- a/core/io/file_access_zip.h
+++ b/core/io/file_access_zip.h
@@ -34,7 +34,7 @@
 #define FILE_ACCESS_ZIP_H
 
 #include "core/io/file_access_pack.h"
-#include "map.h"
+#include "core/map.h"
 
 #include "thirdparty/minizip/unzip.h"
 
diff --git a/core/io/http_client.cpp b/core/io/http_client.cpp
index 2425bb6d69..bfa2d3b389 100644
--- a/core/io/http_client.cpp
+++ b/core/io/http_client.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "http_client.h"
-#include "io/stream_peer_ssl.h"
-#include "version.h"
+
+#include "core/io/stream_peer_ssl.h"
+#include "core/version.h"
 
 const char *HTTPClient::_methods[METHOD_MAX] = {
 	"GET",
diff --git a/core/io/http_client.h b/core/io/http_client.h
index 82b56b01db..9e674e4c1d 100644
--- a/core/io/http_client.h
+++ b/core/io/http_client.h
@@ -31,10 +31,10 @@
 #ifndef HTTP_CLIENT_H
 #define HTTP_CLIENT_H
 
-#include "io/ip.h"
-#include "io/stream_peer.h"
-#include "io/stream_peer_tcp.h"
-#include "reference.h"
+#include "core/io/ip.h"
+#include "core/io/stream_peer.h"
+#include "core/io/stream_peer_tcp.h"
+#include "core/reference.h"
 
 class HTTPClient : public Reference {
 
diff --git a/core/io/image_loader.cpp b/core/io/image_loader.cpp
index b8fd13d67c..f202320043 100644
--- a/core/io/image_loader.cpp
+++ b/core/io/image_loader.cpp
@@ -30,7 +30,8 @@
 
 #include "image_loader.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
+
 bool ImageFormatLoader::recognize(const String &p_extension) const {
 
 	List<String> extensions;
diff --git a/core/io/image_loader.h b/core/io/image_loader.h
index fbb654c326..561f275e0c 100644
--- a/core/io/image_loader.h
+++ b/core/io/image_loader.h
@@ -31,11 +31,11 @@
 #ifndef IMAGE_LOADER_H
 #define IMAGE_LOADER_H
 
-#include "image.h"
-#include "io/resource_loader.h"
-#include "list.h"
-#include "os/file_access.h"
-#include "ustring.h"
+#include "core/image.h"
+#include "core/io/resource_loader.h"
+#include "core/list.h"
+#include "core/os/file_access.h"
+#include "core/ustring.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/io/ip.cpp b/core/io/ip.cpp
index 82c94ca0b2..f56e850796 100644
--- a/core/io/ip.cpp
+++ b/core/io/ip.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "ip.h"
-#include "hash_map.h"
-#include "os/semaphore.h"
-#include "os/thread.h"
+
+#include "core/hash_map.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
 
 VARIANT_ENUM_CAST(IP::ResolverStatus);
 
diff --git a/core/io/ip.h b/core/io/ip.h
index d55b05b6fe..967f04a4bd 100644
--- a/core/io/ip.h
+++ b/core/io/ip.h
@@ -31,8 +31,8 @@
 #ifndef IP_H
 #define IP_H
 
-#include "io/ip_address.h"
-#include "os/os.h"
+#include "core/io/ip_address.h"
+#include "core/os/os.h"
 
 struct _IP_ResolverPrivate;
 
diff --git a/core/io/ip_address.h b/core/io/ip_address.h
index d7b031b960..607ce81ef4 100644
--- a/core/io/ip_address.h
+++ b/core/io/ip_address.h
@@ -31,7 +31,7 @@
 #ifndef IP_ADDRESS_H
 #define IP_ADDRESS_H
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 struct IP_Address {
 
diff --git a/core/io/json.cpp b/core/io/json.cpp
index 7b2c5a62df..26e18828e5 100644
--- a/core/io/json.cpp
+++ b/core/io/json.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "json.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
 
 const char *JSON::tk_name[TK_MAX] = {
 	"'{'",
diff --git a/core/io/json.h b/core/io/json.h
index 9c12423798..af6c463331 100644
--- a/core/io/json.h
+++ b/core/io/json.h
@@ -31,7 +31,7 @@
 #ifndef JSON_H
 #define JSON_H
 
-#include "variant.h"
+#include "core/variant.h"
 
 class JSON {
 
diff --git a/core/io/logger.cpp b/core/io/logger.cpp
index 786bec461b..051c02ab32 100644
--- a/core/io/logger.cpp
+++ b/core/io/logger.cpp
@@ -30,9 +30,9 @@
 
 #include "logger.h"
 
-#include "os/dir_access.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 // va_copy was defined in the C99, but not in C++ standards before C++11.
 // When you compile C++ without --std=c++<XX> option, compilers still define
diff --git a/core/io/logger.h b/core/io/logger.h
index 631e7a0589..d32b43b030 100644
--- a/core/io/logger.h
+++ b/core/io/logger.h
@@ -31,9 +31,10 @@
 #ifndef LOGGER_H
 #define LOGGER_H
 
-#include "os/file_access.h"
-#include "ustring.h"
-#include "vector.h"
+#include "core/os/file_access.h"
+#include "core/ustring.h"
+#include "core/vector.h"
+
 #include <stdarg.h>
 
 class Logger {
@@ -106,4 +107,4 @@ public:
 	virtual ~CompositeLogger();
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/core/io/marshalls.cpp b/core/io/marshalls.cpp
index e97df0c261..e15519da47 100644
--- a/core/io/marshalls.cpp
+++ b/core/io/marshalls.cpp
@@ -29,9 +29,11 @@
 /*************************************************************************/
 
 #include "marshalls.h"
-#include "os/keyboard.h"
-#include "print_string.h"
-#include "reference.h"
+
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
+#include "core/reference.h"
+
 #include <limits.h>
 #include <stdio.h>
 
diff --git a/core/io/marshalls.h b/core/io/marshalls.h
index 381e4e3d20..1284520945 100644
--- a/core/io/marshalls.h
+++ b/core/io/marshalls.h
@@ -31,10 +31,10 @@
 #ifndef MARSHALLS_H
 #define MARSHALLS_H
 
-#include "typedefs.h"
+#include "core/reference.h"
+#include "core/typedefs.h"
+#include "core/variant.h"
 
-#include "reference.h"
-#include "variant.h"
 /**
   * Miscellaneous helpers for marshalling data types, and encoding
   * in an endian independent way
diff --git a/core/io/multiplayer_api.cpp b/core/io/multiplayer_api.cpp
index 8e67f1c97a..1179b1bfd6 100644
--- a/core/io/multiplayer_api.cpp
+++ b/core/io/multiplayer_api.cpp
@@ -28,7 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "core/io/multiplayer_api.h"
+#include "multiplayer_api.h"
+
 #include "core/io/marshalls.h"
 #include "scene/main/node.h"
 
diff --git a/core/io/networked_multiplayer_peer.h b/core/io/networked_multiplayer_peer.h
index 66089c27b9..8e83c528a0 100644
--- a/core/io/networked_multiplayer_peer.h
+++ b/core/io/networked_multiplayer_peer.h
@@ -31,7 +31,7 @@
 #ifndef NETWORKED_MULTIPLAYER_PEER_H
 #define NETWORKED_MULTIPLAYER_PEER_H
 
-#include "io/packet_peer.h"
+#include "core/io/packet_peer.h"
 
 class NetworkedMultiplayerPeer : public PacketPeer {
 
diff --git a/core/io/packet_peer.cpp b/core/io/packet_peer.cpp
index dc4997dfc2..b6dd4eaf6f 100644
--- a/core/io/packet_peer.cpp
+++ b/core/io/packet_peer.cpp
@@ -30,8 +30,9 @@
 
 #include "packet_peer.h"
 
-#include "io/marshalls.h"
-#include "project_settings.h"
+#include "core/io/marshalls.h"
+#include "core/project_settings.h"
+
 /* helpers / binders */
 
 PacketPeer::PacketPeer() {
diff --git a/core/io/packet_peer.h b/core/io/packet_peer.h
index b10152e96b..a6559df460 100644
--- a/core/io/packet_peer.h
+++ b/core/io/packet_peer.h
@@ -31,9 +31,10 @@
 #ifndef PACKET_PEER_H
 #define PACKET_PEER_H
 
-#include "io/stream_peer.h"
-#include "object.h"
-#include "ring_buffer.h"
+#include "core/io/stream_peer.h"
+#include "core/object.h"
+#include "core/ring_buffer.h"
+
 class PacketPeer : public Reference {
 
 	GDCLASS(PacketPeer, Reference);
diff --git a/core/io/packet_peer_udp.cpp b/core/io/packet_peer_udp.cpp
index bfbea15582..ef4fdd689c 100644
--- a/core/io/packet_peer_udp.cpp
+++ b/core/io/packet_peer_udp.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "packet_peer_udp.h"
-#include "io/ip.h"
+
+#include "core/io/ip.h"
 
 PacketPeerUDP *(*PacketPeerUDP::_create)() = NULL;
 
diff --git a/core/io/packet_peer_udp.h b/core/io/packet_peer_udp.h
index 035f4ad1c9..2ed53cef7f 100644
--- a/core/io/packet_peer_udp.h
+++ b/core/io/packet_peer_udp.h
@@ -31,8 +31,8 @@
 #ifndef PACKET_PEER_UDP_H
 #define PACKET_PEER_UDP_H
 
-#include "io/ip.h"
-#include "io/packet_peer.h"
+#include "core/io/ip.h"
+#include "core/io/packet_peer.h"
 
 class PacketPeerUDP : public PacketPeer {
 	GDCLASS(PacketPeerUDP, PacketPeer);
diff --git a/core/io/pck_packer.cpp b/core/io/pck_packer.cpp
index 2fd73db27d..3df8c01760 100644
--- a/core/io/pck_packer.cpp
+++ b/core/io/pck_packer.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "pck_packer.h"
+
 #include "core/os/file_access.h"
-#include "version.h"
+#include "core/version.h"
 
 static uint64_t _align(uint64_t p_n, int p_alignment) {
 
diff --git a/core/io/resource_format_binary.h b/core/io/resource_format_binary.h
index 021f7f6a2f..35d594f228 100644
--- a/core/io/resource_format_binary.h
+++ b/core/io/resource_format_binary.h
@@ -31,9 +31,9 @@
 #ifndef RESOURCE_FORMAT_BINARY_H
 #define RESOURCE_FORMAT_BINARY_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
 
 class ResourceInteractiveLoaderBinary : public ResourceInteractiveLoader {
 
diff --git a/core/io/resource_import.cpp b/core/io/resource_import.cpp
index cfe6655504..ffea43b6bf 100644
--- a/core/io/resource_import.cpp
+++ b/core/io/resource_import.cpp
@@ -30,8 +30,8 @@
 
 #include "resource_import.h"
 
-#include "os/os.h"
-#include "variant_parser.h"
+#include "core/os/os.h"
+#include "core/variant_parser.h"
 
 Error ResourceFormatImporter::_get_path_and_type(const String &p_path, PathAndType &r_path_and_type, bool *r_valid) const {
 
diff --git a/core/io/resource_import.h b/core/io/resource_import.h
index 80e0743eda..53718bd789 100644
--- a/core/io/resource_import.h
+++ b/core/io/resource_import.h
@@ -31,7 +31,8 @@
 #ifndef RESOURCE_IMPORT_H
 #define RESOURCE_IMPORT_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
+
 class ResourceImporter;
 
 class ResourceFormatImporter : public ResourceFormatLoader {
diff --git a/core/io/resource_loader.cpp b/core/io/resource_loader.cpp
index 66dc9730c5..8c56d55e85 100644
--- a/core/io/resource_loader.cpp
+++ b/core/io/resource_loader.cpp
@@ -29,14 +29,16 @@
 /*************************************************************************/
 
 #include "resource_loader.h"
-#include "io/resource_import.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "path_remap.h"
-#include "print_string.h"
-#include "project_settings.h"
-#include "translation.h"
-#include "variant_parser.h"
+
+#include "core/io/resource_import.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/path_remap.h"
+#include "core/print_string.h"
+#include "core/project_settings.h"
+#include "core/translation.h"
+#include "core/variant_parser.h"
+
 ResourceFormatLoader *ResourceLoader::loader[MAX_LOADERS];
 
 int ResourceLoader::loader_count = 0;
diff --git a/core/io/resource_loader.h b/core/io/resource_loader.h
index f78464ef0c..de0981350d 100644
--- a/core/io/resource_loader.h
+++ b/core/io/resource_loader.h
@@ -31,7 +31,7 @@
 #ifndef RESOURCE_LOADER_H
 #define RESOURCE_LOADER_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/io/resource_saver.cpp b/core/io/resource_saver.cpp
index 3dcd94880a..5c8188f735 100644
--- a/core/io/resource_saver.cpp
+++ b/core/io/resource_saver.cpp
@@ -29,10 +29,11 @@
 /*************************************************************************/
 
 #include "resource_saver.h"
-#include "os/file_access.h"
-#include "project_settings.h"
-#include "resource_loader.h"
-#include "script_language.h"
+
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
 
 ResourceFormatSaver *ResourceSaver::saver[MAX_SAVERS];
 
diff --git a/core/io/resource_saver.h b/core/io/resource_saver.h
index 396f37d414..7ed580f2d6 100644
--- a/core/io/resource_saver.h
+++ b/core/io/resource_saver.h
@@ -31,7 +31,7 @@
 #ifndef RESOURCE_SAVER_H
 #define RESOURCE_SAVER_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/io/stream_peer.cpp b/core/io/stream_peer.cpp
index 3e0ee088c2..156a842e35 100644
--- a/core/io/stream_peer.cpp
+++ b/core/io/stream_peer.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "stream_peer.h"
-#include "io/marshalls.h"
+
+#include "core/io/marshalls.h"
 
 Error StreamPeer::_put_data(const PoolVector<uint8_t> &p_data) {
 
diff --git a/core/io/stream_peer.h b/core/io/stream_peer.h
index 605b0a7980..9d2e0340b0 100644
--- a/core/io/stream_peer.h
+++ b/core/io/stream_peer.h
@@ -31,7 +31,7 @@
 #ifndef STREAM_PEER_H
 #define STREAM_PEER_H
 
-#include "reference.h"
+#include "core/reference.h"
 
 class StreamPeer : public Reference {
 	GDCLASS(StreamPeer, Reference);
diff --git a/core/io/stream_peer_ssl.cpp b/core/io/stream_peer_ssl.cpp
index 25adb6a6ee..1f59021938 100644
--- a/core/io/stream_peer_ssl.cpp
+++ b/core/io/stream_peer_ssl.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "stream_peer_ssl.h"
-#include "os/file_access.h"
-#include "project_settings.h"
+
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
 
 StreamPeerSSL *(*StreamPeerSSL::_create)() = NULL;
 
diff --git a/core/io/stream_peer_ssl.h b/core/io/stream_peer_ssl.h
index 870704e875..f66c1c7de9 100644
--- a/core/io/stream_peer_ssl.h
+++ b/core/io/stream_peer_ssl.h
@@ -31,7 +31,7 @@
 #ifndef STREAM_PEER_SSL_H
 #define STREAM_PEER_SSL_H
 
-#include "io/stream_peer.h"
+#include "core/io/stream_peer.h"
 
 class StreamPeerSSL : public StreamPeer {
 	GDCLASS(StreamPeerSSL, StreamPeer);
diff --git a/core/io/stream_peer_tcp.h b/core/io/stream_peer_tcp.h
index 8a16d820f2..dcda3b5bd7 100644
--- a/core/io/stream_peer_tcp.h
+++ b/core/io/stream_peer_tcp.h
@@ -31,10 +31,9 @@
 #ifndef STREAM_PEER_TCP_H
 #define STREAM_PEER_TCP_H
 
-#include "stream_peer.h"
-
-#include "io/ip.h"
-#include "ip_address.h"
+#include "core/io/ip.h"
+#include "core/io/ip_address.h"
+#include "core/io/stream_peer.h"
 
 class StreamPeerTCP : public StreamPeer {
 
diff --git a/core/io/tcp_server.h b/core/io/tcp_server.h
index a250e8b249..7353390bef 100644
--- a/core/io/tcp_server.h
+++ b/core/io/tcp_server.h
@@ -31,9 +31,9 @@
 #ifndef TCP_SERVER_H
 #define TCP_SERVER_H
 
-#include "io/ip.h"
-#include "io/stream_peer.h"
-#include "stream_peer_tcp.h"
+#include "core/io/ip.h"
+#include "core/io/stream_peer.h"
+#include "core/io/stream_peer_tcp.h"
 
 class TCP_Server : public Reference {
 
diff --git a/core/io/translation_loader_po.cpp b/core/io/translation_loader_po.cpp
index 85c1fc5ddf..830c2b6694 100644
--- a/core/io/translation_loader_po.cpp
+++ b/core/io/translation_loader_po.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "translation_loader_po.h"
-#include "os/file_access.h"
-#include "translation.h"
+
+#include "core/os/file_access.h"
+#include "core/translation.h"
 
 RES TranslationLoaderPO::load_translation(FileAccess *f, Error *r_error, const String &p_path) {
 
diff --git a/core/io/translation_loader_po.h b/core/io/translation_loader_po.h
index 33cf9bd8b4..670a9fdd7e 100644
--- a/core/io/translation_loader_po.h
+++ b/core/io/translation_loader_po.h
@@ -31,9 +31,10 @@
 #ifndef TRANSLATION_LOADER_PO_H
 #define TRANSLATION_LOADER_PO_H
 
-#include "io/resource_loader.h"
-#include "os/file_access.h"
-#include "translation.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/translation.h"
+
 class TranslationLoaderPO : public ResourceFormatLoader {
 public:
 	static RES load_translation(FileAccess *f, Error *r_error, const String &p_path = String());
diff --git a/core/io/xml_parser.cpp b/core/io/xml_parser.cpp
index 33c9b56d5a..8c0cbd6e55 100644
--- a/core/io/xml_parser.cpp
+++ b/core/io/xml_parser.cpp
@@ -29,7 +29,9 @@
 /*************************************************************************/
 
 #include "xml_parser.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
+
 //#define DEBUG_XML
 
 VARIANT_ENUM_CAST(XMLParser::NodeType);
diff --git a/core/io/xml_parser.h b/core/io/xml_parser.h
index 297b57ffdc..bbc7671a0e 100644
--- a/core/io/xml_parser.h
+++ b/core/io/xml_parser.h
@@ -31,10 +31,10 @@
 #ifndef XML_PARSER_H
 #define XML_PARSER_H
 
-#include "os/file_access.h"
-#include "reference.h"
-#include "ustring.h"
-#include "vector.h"
+#include "core/os/file_access.h"
+#include "core/reference.h"
+#include "core/ustring.h"
+#include "core/vector.h"
 
 /*
   Based on irrXML (see their zlib license). Added mainly for compatibility with their Collada loader.
diff --git a/core/io/zip_io.h b/core/io/zip_io.h
index 3a7fdb0302..c3314a8990 100644
--- a/core/io/zip_io.h
+++ b/core/io/zip_io.h
@@ -31,8 +31,8 @@
 #ifndef ZIP_IO_H
 #define ZIP_IO_H
 
-#include "os/copymem.h"
-#include "os/file_access.h"
+#include "core/os/copymem.h"
+#include "core/os/file_access.h"
 
 #include "thirdparty/minizip/unzip.h"
 #include "thirdparty/minizip/zip.h"
diff --git a/core/list.h b/core/list.h
index f977df4634..281f253a59 100644
--- a/core/list.h
+++ b/core/list.h
@@ -31,8 +31,8 @@
 #ifndef GLOBALS_LIST_H
 #define GLOBALS_LIST_H
 
-#include "os/memory.h"
-#include "sort.h"
+#include "core/os/memory.h"
+#include "core/sort.h"
 
 /**
  * Generic Templatized Linked List Implementation.
diff --git a/core/map.h b/core/map.h
index 700d4b8693..cab8965bb3 100644
--- a/core/map.h
+++ b/core/map.h
@@ -31,7 +31,7 @@
 #ifndef MAP_H
 #define MAP_H
 
-#include "set.h"
+#include "core/set.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/math/a_star.cpp b/core/math/a_star.cpp
index 021391da83..e4f93289e9 100644
--- a/core/math/a_star.cpp
+++ b/core/math/a_star.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "a_star.h"
-#include "geometry.h"
+
+#include "core/math/geometry.h"
+#include "core/script_language.h"
 #include "scene/scene_string_names.h"
-#include "script_language.h"
 
 int AStar::get_available_point_id() const {
 
diff --git a/core/math/a_star.h b/core/math/a_star.h
index 8c1b5f64cb..d2ef765006 100644
--- a/core/math/a_star.h
+++ b/core/math/a_star.h
@@ -31,8 +31,9 @@
 #ifndef ASTAR_H
 #define ASTAR_H
 
-#include "reference.h"
-#include "self_list.h"
+#include "core/reference.h"
+#include "core/self_list.h"
+
 /**
 	A* pathfinding algorithm
 
diff --git a/core/math/aabb.cpp b/core/math/aabb.cpp
index e2e71dda92..d0cb2b5195 100644
--- a/core/math/aabb.cpp
+++ b/core/math/aabb.cpp
@@ -30,7 +30,7 @@
 
 #include "aabb.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 
 real_t AABB::get_area() const {
 
diff --git a/core/math/aabb.h b/core/math/aabb.h
index cdb8eb48a3..0b03b7d314 100644
--- a/core/math/aabb.h
+++ b/core/math/aabb.h
@@ -31,9 +31,9 @@
 #ifndef AABB_H
 #define AABB_H
 
-#include "math_defs.h"
-#include "plane.h"
-#include "vector3.h"
+#include "core/math/math_defs.h"
+#include "core/math/plane.h"
+#include "core/math/vector3.h"
 
 /**
  * AABB / AABB (Axis Aligned Bounding Box)
diff --git a/core/math/audio_frame.h b/core/math/audio_frame.h
index 67ba025e1c..fde26e8056 100644
--- a/core/math/audio_frame.h
+++ b/core/math/audio_frame.h
@@ -31,7 +31,7 @@
 #ifndef AUDIOFRAME_H
 #define AUDIOFRAME_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 static inline float undenormalise(volatile float f) {
 	union {
diff --git a/core/math/bsp_tree.cpp b/core/math/bsp_tree.cpp
index 24096de551..6e51c56357 100644
--- a/core/math/bsp_tree.cpp
+++ b/core/math/bsp_tree.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "bsp_tree.h"
-#include "error_macros.h"
-#include "print_string.h"
+
+#include "core/error_macros.h"
+#include "core/print_string.h"
 
 void BSP_Tree::from_aabb(const AABB &p_aabb) {
 
diff --git a/core/math/bsp_tree.h b/core/math/bsp_tree.h
index fb16818ae7..b06e6b8539 100644
--- a/core/math/bsp_tree.h
+++ b/core/math/bsp_tree.h
@@ -31,13 +31,13 @@
 #ifndef BSP_TREE_H
 #define BSP_TREE_H
 
-#include "aabb.h"
-#include "dvector.h"
-#include "face3.h"
-#include "method_ptrcall.h"
-#include "plane.h"
-#include "variant.h"
-#include "vector.h"
+#include "core/dvector.h"
+#include "core/math/aabb.h"
+#include "core/math/face3.h"
+#include "core/math/plane.h"
+#include "core/method_ptrcall.h"
+#include "core/variant.h"
+#include "core/vector.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/math/camera_matrix.cpp b/core/math/camera_matrix.cpp
index 1ab9b3532e..3a082d5720 100644
--- a/core/math/camera_matrix.cpp
+++ b/core/math/camera_matrix.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "camera_matrix.h"
-#include "math_funcs.h"
-#include "print_string.h"
+
+#include "core/math/math_funcs.h"
+#include "core/print_string.h"
 
 void CameraMatrix::set_identity() {
 
diff --git a/core/math/camera_matrix.h b/core/math/camera_matrix.h
index a689c7238a..bd20908ad9 100644
--- a/core/math/camera_matrix.h
+++ b/core/math/camera_matrix.h
@@ -31,8 +31,9 @@
 #ifndef CAMERA_MATRIX_H
 #define CAMERA_MATRIX_H
 
-#include "rect2.h"
-#include "transform.h"
+#include "core/math/rect2.h"
+#include "core/math/transform.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/math/delaunay.h b/core/math/delaunay.h
index d47dc5240b..9c5eef9069 100644
--- a/core/math/delaunay.h
+++ b/core/math/delaunay.h
@@ -31,7 +31,7 @@
 #ifndef DELAUNAY_H
 #define DELAUNAY_H
 
-#include "rect2.h"
+#include "core/math/rect2.h"
 
 class Delaunay2D {
 public:
diff --git a/core/math/expression.cpp b/core/math/expression.cpp
index 53e6aae36c..c0d7f874d2 100644
--- a/core/math/expression.cpp
+++ b/core/math/expression.cpp
@@ -30,13 +30,13 @@
 
 #include "expression.h"
 
-#include "class_db.h"
-#include "func_ref.h"
-#include "io/marshalls.h"
-#include "math_funcs.h"
-#include "os/os.h"
-#include "reference.h"
-#include "variant_parser.h"
+#include "core/class_db.h"
+#include "core/func_ref.h"
+#include "core/io/marshalls.h"
+#include "core/math/math_funcs.h"
+#include "core/os/os.h"
+#include "core/reference.h"
+#include "core/variant_parser.h"
 
 const char *Expression::func_name[Expression::FUNC_MAX] = {
 	"sin",
diff --git a/core/math/face3.cpp b/core/math/face3.cpp
index 801f2a3b4d..aa46fde7f7 100644
--- a/core/math/face3.cpp
+++ b/core/math/face3.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "face3.h"
-#include "geometry.h"
+
+#include "core/math/geometry.h"
 
 int Face3::split_by_plane(const Plane &p_plane, Face3 p_res[3], bool p_is_point_over[3]) const {
 
diff --git a/core/math/face3.h b/core/math/face3.h
index faed0fa8d4..b41daf04d4 100644
--- a/core/math/face3.h
+++ b/core/math/face3.h
@@ -31,10 +31,10 @@
 #ifndef FACE3_H
 #define FACE3_H
 
-#include "aabb.h"
-#include "plane.h"
-#include "transform.h"
-#include "vector3.h"
+#include "core/math/aabb.h"
+#include "core/math/plane.h"
+#include "core/math/transform.h"
+#include "core/math/vector3.h"
 
 class Face3 {
 public:
diff --git a/core/math/geometry.cpp b/core/math/geometry.cpp
index d8cb657b5e..be5e40e4e6 100644
--- a/core/math/geometry.cpp
+++ b/core/math/geometry.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "geometry.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
 
 bool Geometry::is_point_in_polygon(const Vector2 &p_point, const Vector<Vector2> &p_polygon) {
 
diff --git a/core/math/geometry.h b/core/math/geometry.h
index 83b9467a30..a813a90774 100644
--- a/core/math/geometry.h
+++ b/core/math/geometry.h
@@ -31,14 +31,15 @@
 #ifndef GEOMETRY_H
 #define GEOMETRY_H
 
-#include "dvector.h"
-#include "face3.h"
-#include "object.h"
-#include "print_string.h"
-#include "rect2.h"
-#include "triangulate.h"
-#include "vector.h"
-#include "vector3.h"
+#include "core/dvector.h"
+#include "core/math/face3.h"
+#include "core/math/rect2.h"
+#include "core/math/triangulate.h"
+#include "core/math/vector3.h"
+#include "core/object.h"
+#include "core/print_string.h"
+#include "core/vector.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h
index 992084a653..472baf0484 100644
--- a/core/math/math_funcs.h
+++ b/core/math/math_funcs.h
@@ -31,8 +31,8 @@
 #ifndef MATH_FUNCS_H
 #define MATH_FUNCS_H
 
-#include "math_defs.h"
-#include "typedefs.h"
+#include "core/math/math_defs.h"
+#include "core/typedefs.h"
 
 #include "thirdparty/misc/pcg.h"
 
diff --git a/core/math/matrix3.cpp b/core/math/matrix3.cpp
index 7db41756ed..fca54b1556 100644
--- a/core/math/matrix3.cpp
+++ b/core/math/matrix3.cpp
@@ -29,9 +29,11 @@
 /*************************************************************************/
 
 #include "matrix3.h"
-#include "math_funcs.h"
-#include "os/copymem.h"
-#include "print_string.h"
+
+#include "core/math/math_funcs.h"
+#include "core/os/copymem.h"
+#include "core/print_string.h"
+
 #define cofac(row1, col1, row2, col2) \
 	(elements[row1][col1] * elements[row2][col2] - elements[row1][col2] * elements[row2][col1])
 
diff --git a/core/math/matrix3.h b/core/math/matrix3.h
index 9ff1a97dc9..35bf75bbe4 100644
--- a/core/math/matrix3.h
+++ b/core/math/matrix3.h
@@ -28,16 +28,18 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "vector3.h"
+// Circular dependency between Vector3 and Basis :/
+#include "core/math/vector3.h"
 
 #ifndef MATRIX3_H
 #define MATRIX3_H
 
-#include "quat.h"
+#include "core/math/quat.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class Basis {
 public:
 	Vector3 elements[3];
diff --git a/core/math/octree.h b/core/math/octree.h
index 4e3d6257f0..b57fb84e8f 100644
--- a/core/math/octree.h
+++ b/core/math/octree.h
@@ -31,12 +31,12 @@
 #ifndef OCTREE_H
 #define OCTREE_H
 
-#include "aabb.h"
-#include "list.h"
-#include "map.h"
-#include "print_string.h"
-#include "variant.h"
-#include "vector3.h"
+#include "core/list.h"
+#include "core/map.h"
+#include "core/math/aabb.h"
+#include "core/math/vector3.h"
+#include "core/print_string.h"
+#include "core/variant.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/math/plane.cpp b/core/math/plane.cpp
index 78bb1771a4..3c597d57f8 100644
--- a/core/math/plane.cpp
+++ b/core/math/plane.cpp
@@ -30,7 +30,7 @@
 
 #include "plane.h"
 
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 
 #define _PLANE_EQ_DOT_EPSILON 0.999
 #define _PLANE_EQ_D_EPSILON 0.0001
diff --git a/core/math/plane.h b/core/math/plane.h
index e567422dd0..4eedebb79e 100644
--- a/core/math/plane.h
+++ b/core/math/plane.h
@@ -31,7 +31,7 @@
 #ifndef PLANE_H
 #define PLANE_H
 
-#include "vector3.h"
+#include "core/math/vector3.h"
 
 class Plane {
 public:
diff --git a/core/math/quat.cpp b/core/math/quat.cpp
index 2251571146..d660ce4553 100644
--- a/core/math/quat.cpp
+++ b/core/math/quat.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "quat.h"
-#include "matrix3.h"
-#include "print_string.h"
+
+#include "core/math/matrix3.h"
+#include "core/print_string.h"
 
 // set_euler_xyz expects a vector containing the Euler angles in the format
 // (ax,ay,az), where ax is the angle of rotation around x axis,
diff --git a/core/math/quat.h b/core/math/quat.h
index 6dc8d66f60..10d3846c87 100644
--- a/core/math/quat.h
+++ b/core/math/quat.h
@@ -28,18 +28,20 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "vector3.h"
+// Circular dependency between Vector3 and Basis :/
+#include "core/math/vector3.h"
 
 #ifndef QUAT_H
 #define QUAT_H
 
-#include "math_defs.h"
-#include "math_funcs.h"
-#include "ustring.h"
+#include "core/math/math_defs.h"
+#include "core/math/math_funcs.h"
+#include "core/ustring.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class Quat {
 public:
 	real_t x, y, z, w;
diff --git a/core/math/quick_hull.cpp b/core/math/quick_hull.cpp
index 9d4f4f66b7..23823b339a 100644
--- a/core/math/quick_hull.cpp
+++ b/core/math/quick_hull.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "quick_hull.h"
-#include "map.h"
+
+#include "core/map.h"
 
 uint32_t QuickHull::debug_stop_after = 0xFFFFFFFF;
 
diff --git a/core/math/quick_hull.h b/core/math/quick_hull.h
index eef4a9adff..0ac2758323 100644
--- a/core/math/quick_hull.h
+++ b/core/math/quick_hull.h
@@ -31,10 +31,10 @@
 #ifndef QUICK_HULL_H
 #define QUICK_HULL_H
 
-#include "aabb.h"
-#include "geometry.h"
-#include "list.h"
-#include "set.h"
+#include "core/list.h"
+#include "core/math/aabb.h"
+#include "core/math/geometry.h"
+#include "core/set.h"
 
 class QuickHull {
 
diff --git a/core/math/rect2.cpp b/core/math/rect2.cpp
index 480bccdff1..24c1c8c984 100644
--- a/core/math/rect2.cpp
+++ b/core/math/rect2.cpp
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "transform_2d.h" // Includes rect2.h but Rect2 needs Transform2D
+#include "core/math/transform_2d.h" // Includes rect2.h but Rect2 needs Transform2D
 
 bool Rect2::intersects_segment(const Point2 &p_from, const Point2 &p_to, Point2 *r_pos, Point2 *r_normal) const {
 
diff --git a/core/math/rect2.h b/core/math/rect2.h
index 20329bee0d..96c0e177d3 100644
--- a/core/math/rect2.h
+++ b/core/math/rect2.h
@@ -31,7 +31,7 @@
 #ifndef RECT2_H
 #define RECT2_H
 
-#include "vector2.h" // also includes math_funcs and ustring
+#include "core/math/vector2.h" // also includes math_funcs and ustring
 
 struct Transform2D;
 
diff --git a/core/math/transform.cpp b/core/math/transform.cpp
index 976e0f174e..75257a6e60 100644
--- a/core/math/transform.cpp
+++ b/core/math/transform.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "transform.h"
-#include "math_funcs.h"
-#include "os/copymem.h"
-#include "print_string.h"
+
+#include "core/math/math_funcs.h"
+#include "core/os/copymem.h"
+#include "core/print_string.h"
 
 void Transform::affine_invert() {
 
diff --git a/core/math/transform.h b/core/math/transform.h
index c06eaec604..97c8bf9ab0 100644
--- a/core/math/transform.h
+++ b/core/math/transform.h
@@ -31,12 +31,14 @@
 #ifndef TRANSFORM_H
 #define TRANSFORM_H
 
-#include "aabb.h"
-#include "matrix3.h"
-#include "plane.h"
+#include "core/math/aabb.h"
+#include "core/math/matrix3.h"
+#include "core/math/plane.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class Transform {
 public:
 	Basis basis;
diff --git a/core/math/transform_2d.h b/core/math/transform_2d.h
index bf73755f0d..c8fc3c39e3 100644
--- a/core/math/transform_2d.h
+++ b/core/math/transform_2d.h
@@ -31,7 +31,7 @@
 #ifndef TRANSFORM_2D_H
 #define TRANSFORM_2D_H
 
-#include "rect2.h" // also includes vector2, math_funcs, and ustring
+#include "core/math/rect2.h" // also includes vector2, math_funcs, and ustring
 
 struct Transform2D {
 	// Warning #1: basis of Transform2D is stored differently from Basis. In terms of elements array, the basis matrix looks like "on paper":
diff --git a/core/math/triangle_mesh.cpp b/core/math/triangle_mesh.cpp
index 5475f733c3..6b8dc5eeb3 100644
--- a/core/math/triangle_mesh.cpp
+++ b/core/math/triangle_mesh.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "triangle_mesh.h"
-#include "sort.h"
+
+#include "core/sort.h"
 
 int TriangleMesh::_create_bvh(BVH *p_bvh, BVH **p_bb, int p_from, int p_size, int p_depth, int &max_depth, int &max_alloc) {
 
diff --git a/core/math/triangle_mesh.h b/core/math/triangle_mesh.h
index bf793fc50f..e5f181fba7 100644
--- a/core/math/triangle_mesh.h
+++ b/core/math/triangle_mesh.h
@@ -31,8 +31,9 @@
 #ifndef TRIANGLE_MESH_H
 #define TRIANGLE_MESH_H
 
-#include "face3.h"
-#include "reference.h"
+#include "core/math/face3.h"
+#include "core/reference.h"
+
 class TriangleMesh : public Reference {
 
 	GDCLASS(TriangleMesh, Reference);
diff --git a/core/math/triangulate.h b/core/math/triangulate.h
index a0f56f5f27..2b0557ee55 100644
--- a/core/math/triangulate.h
+++ b/core/math/triangulate.h
@@ -31,7 +31,7 @@
 #ifndef TRIANGULATE_H
 #define TRIANGULATE_H
 
-#include "vector2.h"
+#include "core/math/vector2.h"
 
 /*
 http://www.flipcode.com/archives/Efficient_Polygon_Triangulation.shtml
diff --git a/core/math/vector2.h b/core/math/vector2.h
index fbcdc80b60..df49484aaf 100644
--- a/core/math/vector2.h
+++ b/core/math/vector2.h
@@ -31,8 +31,8 @@
 #ifndef VECTOR2_H
 #define VECTOR2_H
 
-#include "math_funcs.h"
-#include "ustring.h"
+#include "core/math/math_funcs.h"
+#include "core/ustring.h"
 
 struct Vector2i;
 
diff --git a/core/math/vector3.cpp b/core/math/vector3.cpp
index 78d52d5cd1..5dbb01493d 100644
--- a/core/math/vector3.cpp
+++ b/core/math/vector3.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "vector3.h"
-#include "matrix3.h"
+
+#include "core/math/matrix3.h"
 
 void Vector3::rotate(const Vector3 &p_axis, real_t p_phi) {
 
diff --git a/core/math/vector3.h b/core/math/vector3.h
index 5f0e8919ff..5302832eeb 100644
--- a/core/math/vector3.h
+++ b/core/math/vector3.h
@@ -31,10 +31,10 @@
 #ifndef VECTOR3_H
 #define VECTOR3_H
 
-#include "math_defs.h"
-#include "math_funcs.h"
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/math/math_defs.h"
+#include "core/math/math_funcs.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
 
 class Basis;
 
@@ -150,13 +150,8 @@ struct Vector3 {
 	}
 };
 
-#ifdef VECTOR3_IMPL_OVERRIDE
-
-#include "vector3_inline.h"
-
-#else
-
-#include "matrix3.h"
+// Should be included after class definition, otherwise we get circular refs
+#include "core/math/matrix3.h"
 
 Vector3 Vector3::cross(const Vector3 &p_b) const {
 
@@ -451,6 +446,4 @@ Vector3 Vector3::reflect(const Vector3 &p_normal) const {
 	return 2.0 * p_normal * this->dot(p_normal) - *this;
 }
 
-#endif
-
 #endif // VECTOR3_H
diff --git a/core/message_queue.cpp b/core/message_queue.cpp
index 97ee236a46..7f788c90a7 100644
--- a/core/message_queue.cpp
+++ b/core/message_queue.cpp
@@ -30,8 +30,8 @@
 
 #include "message_queue.h"
 
-#include "project_settings.h"
-#include "script_language.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
 
 MessageQueue *MessageQueue::singleton = NULL;
 
diff --git a/core/message_queue.h b/core/message_queue.h
index be5ffe4fae..f51da3c7a3 100644
--- a/core/message_queue.h
+++ b/core/message_queue.h
@@ -31,9 +31,9 @@
 #ifndef MESSAGE_QUEUE_H
 #define MESSAGE_QUEUE_H
 
-#include "object.h"
-#include "os/mutex.h"
-#include "os/thread_safe.h"
+#include "core/object.h"
+#include "core/os/mutex.h"
+#include "core/os/thread_safe.h"
 
 class MessageQueue {
 
diff --git a/core/method_bind.cpp b/core/method_bind.cpp
index 52ee9e0848..fa5b88b5ac 100644
--- a/core/method_bind.cpp
+++ b/core/method_bind.cpp
@@ -30,7 +30,7 @@
 
 // object.h needs to be the first include *before* method_bind.h
 // FIXME: Find out why and fix potential cyclical dependencies.
-#include "object.h"
+#include "core/object.h"
 
 #include "method_bind.h"
 
diff --git a/core/method_bind.h b/core/method_bind.h
index 7ee687ee40..7788de919c 100644
--- a/core/method_bind.h
+++ b/core/method_bind.h
@@ -31,10 +31,11 @@
 #ifndef METHOD_BIND_H
 #define METHOD_BIND_H
 
-#include "list.h"
-#include "method_ptrcall.h"
-#include "object.h"
-#include "variant.h"
+#include "core/list.h"
+#include "core/method_ptrcall.h"
+#include "core/object.h"
+#include "core/variant.h"
+
 #include <stdio.h>
 
 /**
@@ -45,7 +46,7 @@
 #define DEBUG_METHODS_ENABLED
 #endif
 
-#include "type_info.h"
+#include "core/type_info.h"
 
 enum MethodFlags {
 
diff --git a/core/method_ptrcall.h b/core/method_ptrcall.h
index 6a33cf4d70..b706e65d53 100644
--- a/core/method_ptrcall.h
+++ b/core/method_ptrcall.h
@@ -31,9 +31,9 @@
 #ifndef METHOD_PTRCALL_H
 #define METHOD_PTRCALL_H
 
-#include "transform_2d.h"
-#include "typedefs.h"
-#include "variant.h"
+#include "core/math/transform_2d.h"
+#include "core/typedefs.h"
+#include "core/variant.h"
 
 #ifdef PTRCALL_ENABLED
 
diff --git a/core/node_path.cpp b/core/node_path.cpp
index 7d4116fa1e..35d6fdcf10 100644
--- a/core/node_path.cpp
+++ b/core/node_path.cpp
@@ -30,7 +30,7 @@
 
 #include "node_path.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 
 void NodePath::_update_hash_cache() const {
 
diff --git a/core/node_path.h b/core/node_path.h
index 71235029af..4a72d4a4d5 100644
--- a/core/node_path.h
+++ b/core/node_path.h
@@ -31,8 +31,9 @@
 #ifndef NODE_PATH_H
 #define NODE_PATH_H
 
-#include "string_db.h"
-#include "ustring.h"
+#include "core/string_db.h"
+#include "core/ustring.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/oa_hash_map.h b/core/oa_hash_map.h
index 3a17fc21f3..a2d76381ca 100644
--- a/core/oa_hash_map.h
+++ b/core/oa_hash_map.h
@@ -31,10 +31,10 @@
 #ifndef OA_HASH_MAP_H
 #define OA_HASH_MAP_H
 
-#include "hashfuncs.h"
-#include "math_funcs.h"
-#include "os/copymem.h"
-#include "os/memory.h"
+#include "core/hashfuncs.h"
+#include "core/math/math_funcs.h"
+#include "core/os/copymem.h"
+#include "core/os/memory.h"
 
 /**
  * A HashMap implementation that uses open addressing with robinhood hashing.
diff --git a/core/object.cpp b/core/object.cpp
index 24a31930a0..96914fe141 100644
--- a/core/object.cpp
+++ b/core/object.cpp
@@ -30,14 +30,14 @@
 
 #include "object.h"
 
-#include "class_db.h"
-#include "core_string_names.h"
-#include "message_queue.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "resource.h"
-#include "script_language.h"
-#include "translation.h"
+#include "core/class_db.h"
+#include "core/core_string_names.h"
+#include "core/message_queue.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/resource.h"
+#include "core/script_language.h"
+#include "core/translation.h"
 
 #ifdef DEBUG_ENABLED
 
diff --git a/core/object.h b/core/object.h
index 43e1cf4785..be405a47a6 100644
--- a/core/object.h
+++ b/core/object.h
@@ -31,13 +31,13 @@
 #ifndef OBJECT_H
 #define OBJECT_H
 
-#include "hash_map.h"
-#include "list.h"
-#include "map.h"
-#include "os/rw_lock.h"
-#include "set.h"
-#include "variant.h"
-#include "vmap.h"
+#include "core/hash_map.h"
+#include "core/list.h"
+#include "core/map.h"
+#include "core/os/rw_lock.h"
+#include "core/set.h"
+#include "core/variant.h"
+#include "core/vmap.h"
 
 #define VARIANT_ARG_LIST const Variant &p_arg1 = Variant(), const Variant &p_arg2 = Variant(), const Variant &p_arg3 = Variant(), const Variant &p_arg4 = Variant(), const Variant &p_arg5 = Variant()
 #define VARIANT_ARG_PASS p_arg1, p_arg2, p_arg3, p_arg4, p_arg5
@@ -779,6 +779,6 @@ public:
 };
 
 //needed by macros
-#include "class_db.h"
+#include "core/class_db.h"
 
 #endif
diff --git a/core/ordered_hash_map.h b/core/ordered_hash_map.h
index 93ce9a90a7..092bf314d0 100644
--- a/core/ordered_hash_map.h
+++ b/core/ordered_hash_map.h
@@ -31,9 +31,9 @@
 #ifndef ORDERED_HASH_MAP_H
 #define ORDERED_HASH_MAP_H
 
-#include "hash_map.h"
-#include "list.h"
-#include "pair.h"
+#include "core/hash_map.h"
+#include "core/list.h"
+#include "core/pair.h"
 
 /**
  * A hash map which allows to iterate elements in insertion order.
diff --git a/core/os/copymem.h b/core/os/copymem.h
index 87d77bd426..999c770e85 100644
--- a/core/os/copymem.h
+++ b/core/os/copymem.h
@@ -31,7 +31,7 @@
 #ifndef COPYMEM_H
 #define COPYMEM_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 #ifdef PLATFORM_COPYMEM
 
diff --git a/core/os/dir_access.cpp b/core/os/dir_access.cpp
index e631d6e994..dbd62cb3bb 100644
--- a/core/os/dir_access.cpp
+++ b/core/os/dir_access.cpp
@@ -29,10 +29,11 @@
 /*************************************************************************/
 
 #include "dir_access.h"
-#include "os/file_access.h"
-#include "os/memory.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/os/file_access.h"
+#include "core/os/memory.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 String DirAccess::_get_root_path() const {
 
diff --git a/core/os/dir_access.h b/core/os/dir_access.h
index 4df0618021..6b391a87fa 100644
--- a/core/os/dir_access.h
+++ b/core/os/dir_access.h
@@ -31,8 +31,8 @@
 #ifndef DIR_ACCESS_H
 #define DIR_ACCESS_H
 
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/os/file_access.cpp b/core/os/file_access.cpp
index 59f07c03e7..224dea3343 100644
--- a/core/os/file_access.cpp
+++ b/core/os/file_access.cpp
@@ -32,8 +32,8 @@
 
 #include "core/io/file_access_pack.h"
 #include "core/io/marshalls.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include "thirdparty/misc/md5.h"
 #include "thirdparty/misc/sha256.h"
diff --git a/core/os/file_access.h b/core/os/file_access.h
index c4635fdfbb..b7d93e9f5d 100644
--- a/core/os/file_access.h
+++ b/core/os/file_access.h
@@ -31,10 +31,11 @@
 #ifndef FILE_ACCESS_H
 #define FILE_ACCESS_H
 
-#include "math_defs.h"
-#include "os/memory.h"
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/math/math_defs.h"
+#include "core/os/memory.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
+
 /**
  * Multi-Platform abstraction for accessing to files.
  */
diff --git a/core/os/input.cpp b/core/os/input.cpp
index a5b0f91e63..6830df7e81 100644
--- a/core/os/input.cpp
+++ b/core/os/input.cpp
@@ -29,9 +29,11 @@
 /*************************************************************************/
 
 #include "input.h"
-#include "input_map.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/input_map.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+
 Input *Input::singleton = NULL;
 
 Input *Input::get_singleton() {
diff --git a/core/os/input.h b/core/os/input.h
index 001871c5dc..db523d6789 100644
--- a/core/os/input.h
+++ b/core/os/input.h
@@ -31,9 +31,9 @@
 #ifndef INPUT_H
 #define INPUT_H
 
-#include "object.h"
-#include "os/main_loop.h"
-#include "os/thread_safe.h"
+#include "core/object.h"
+#include "core/os/main_loop.h"
+#include "core/os/thread_safe.h"
 
 class Input : public Object {
 
diff --git a/core/os/input_event.cpp b/core/os/input_event.cpp
index 12c6ef7d3b..cc359ef2ac 100644
--- a/core/os/input_event.cpp
+++ b/core/os/input_event.cpp
@@ -30,8 +30,8 @@
 
 #include "input_event.h"
 
-#include "input_map.h"
-#include "os/keyboard.h"
+#include "core/input_map.h"
+#include "core/os/keyboard.h"
 
 void InputEvent::set_device(int p_device) {
 	device = p_device;
diff --git a/core/os/input_event.h b/core/os/input_event.h
index 8732c7e377..cb61e61e7c 100644
--- a/core/os/input_event.h
+++ b/core/os/input_event.h
@@ -31,11 +31,12 @@
 #ifndef INPUT_EVENT_H
 #define INPUT_EVENT_H
 
-#include "os/copymem.h"
-#include "resource.h"
-#include "transform_2d.h"
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/math/transform_2d.h"
+#include "core/os/copymem.h"
+#include "core/resource.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/os/keyboard.cpp b/core/os/keyboard.cpp
index 9dfc91e308..abc579c58d 100644
--- a/core/os/keyboard.cpp
+++ b/core/os/keyboard.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "keyboard.h"
-#include "os/os.h"
+
+#include "core/os/os.h"
 
 struct _KeyCodeText {
 	int code;
diff --git a/core/os/keyboard.h b/core/os/keyboard.h
index a0e6f8b2ef..17bf5eaa48 100644
--- a/core/os/keyboard.h
+++ b/core/os/keyboard.h
@@ -31,13 +31,10 @@
 #ifndef KEYBOARD_H
 #define KEYBOARD_H
 
-#include "ustring.h"
-/**
-	@author Juan Linietsky <reduzio@gmail.com>
-*/
+#include "core/ustring.h"
 
 /**
-@author Juan Linietsky <reduzio@gmail.com>
+	@author Juan Linietsky <reduzio@gmail.com>
 */
 
 /*
diff --git a/core/os/main_loop.cpp b/core/os/main_loop.cpp
index 6dba77ec9a..0945cdd512 100644
--- a/core/os/main_loop.cpp
+++ b/core/os/main_loop.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "main_loop.h"
-#include "script_language.h"
+
+#include "core/script_language.h"
 
 void MainLoop::_bind_methods() {
 
diff --git a/core/os/main_loop.h b/core/os/main_loop.h
index f96e46141e..43f74302a8 100644
--- a/core/os/main_loop.h
+++ b/core/os/main_loop.h
@@ -31,12 +31,14 @@
 #ifndef MAIN_LOOP_H
 #define MAIN_LOOP_H
 
-#include "os/input_event.h"
-#include "reference.h"
-#include "script_language.h"
+#include "core/os/input_event.h"
+#include "core/reference.h"
+#include "core/script_language.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class MainLoop : public Object {
 
 	GDCLASS(MainLoop, Object);
diff --git a/core/os/memory.cpp b/core/os/memory.cpp
index 3eab4343a9..041371a6e2 100644
--- a/core/os/memory.cpp
+++ b/core/os/memory.cpp
@@ -29,9 +29,11 @@
 /*************************************************************************/
 
 #include "memory.h"
-#include "copymem.h"
+
+#include "core/error_macros.h"
+#include "core/os/copymem.h"
 #include "core/safe_refcount.h"
-#include "error_macros.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 
diff --git a/core/os/memory.h b/core/os/memory.h
index f5c6c0b38a..3501c3f14e 100644
--- a/core/os/memory.h
+++ b/core/os/memory.h
@@ -31,7 +31,8 @@
 #ifndef MEMORY_H
 #define MEMORY_H
 
-#include "safe_refcount.h"
+#include "core/safe_refcount.h"
+
 #include <stddef.h>
 
 /**
diff --git a/core/os/midi_driver.cpp b/core/os/midi_driver.cpp
index 7b4f84473c..2b20a708ed 100644
--- a/core/os/midi_driver.cpp
+++ b/core/os/midi_driver.cpp
@@ -30,8 +30,8 @@
 
 #include "midi_driver.h"
 
+#include "core/os/os.h"
 #include "main/input_default.h"
-#include "os/os.h"
 
 MIDIDriver *MIDIDriver::singleton = NULL;
 MIDIDriver *MIDIDriver::get_singleton() {
diff --git a/core/os/midi_driver.h b/core/os/midi_driver.h
index 1a3a67a411..ceb4e71d66 100644
--- a/core/os/midi_driver.h
+++ b/core/os/midi_driver.h
@@ -31,8 +31,9 @@
 #ifndef MIDI_DRIVER_H
 #define MIDI_DRIVER_H
 
+#include "core/typedefs.h"
 #include "core/variant.h"
-#include "typedefs.h"
+
 /**
  * Multi-Platform abstraction for accessing to MIDI.
  */
diff --git a/core/os/mutex.cpp b/core/os/mutex.cpp
index 7c4ea2323c..0c01b06bd6 100644
--- a/core/os/mutex.cpp
+++ b/core/os/mutex.cpp
@@ -29,7 +29,9 @@
 /*************************************************************************/
 
 #include "mutex.h"
-#include "error_macros.h"
+
+#include "core/error_macros.h"
+
 #include <stddef.h>
 
 Mutex *(*Mutex::create_func)(bool) = 0;
diff --git a/core/os/mutex.h b/core/os/mutex.h
index 9debe7f41b..788cc00397 100644
--- a/core/os/mutex.h
+++ b/core/os/mutex.h
@@ -31,7 +31,7 @@
 #ifndef MUTEX_H
 #define MUTEX_H
 
-#include "error_list.h"
+#include "core/error_list.h"
 
 /**
  * @class Mutex
diff --git a/core/os/os.cpp b/core/os/os.cpp
index 0e6251a4fb..7547b6a042 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -30,13 +30,13 @@
 
 #include "os.h"
 
-#include "dir_access.h"
-#include "input.h"
-#include "os/file_access.h"
-#include "os/midi_driver.h"
-#include "project_settings.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/input.h"
+#include "core/os/midi_driver.h"
+#include "core/project_settings.h"
+#include "core/version_generated.gen.h"
 #include "servers/audio_server.h"
-#include "version_generated.gen.h"
 
 #include <stdarg.h>
 
diff --git a/core/os/os.h b/core/os/os.h
index 100af95ef1..8fb5b45f67 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -31,13 +31,14 @@
 #ifndef OS_H
 #define OS_H
 
-#include "engine.h"
-#include "image.h"
-#include "io/logger.h"
-#include "list.h"
-#include "os/main_loop.h"
-#include "ustring.h"
-#include "vector.h"
+#include "core/engine.h"
+#include "core/image.h"
+#include "core/io/logger.h"
+#include "core/list.h"
+#include "core/os/main_loop.h"
+#include "core/ustring.h"
+#include "core/vector.h"
+
 #include <stdarg.h>
 
 /**
diff --git a/core/os/rw_lock.cpp b/core/os/rw_lock.cpp
index 35489490ed..5e51a1dbce 100644
--- a/core/os/rw_lock.cpp
+++ b/core/os/rw_lock.cpp
@@ -30,7 +30,7 @@
 
 #include "rw_lock.h"
 
-#include "error_macros.h"
+#include "core/error_macros.h"
 
 #include <stddef.h>
 
diff --git a/core/os/rw_lock.h b/core/os/rw_lock.h
index 3e53300c9f..8d1029723b 100644
--- a/core/os/rw_lock.h
+++ b/core/os/rw_lock.h
@@ -31,7 +31,7 @@
 #ifndef RWLOCK_H
 #define RWLOCK_H
 
-#include "error_list.h"
+#include "core/error_list.h"
 
 class RWLock {
 protected:
diff --git a/core/os/semaphore.cpp b/core/os/semaphore.cpp
index 0377aeeb29..448d17dd14 100644
--- a/core/os/semaphore.cpp
+++ b/core/os/semaphore.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "semaphore.h"
-#include "error_macros.h"
+
+#include "core/error_macros.h"
 
 Semaphore *(*Semaphore::create_func)() = 0;
 
diff --git a/core/os/semaphore.h b/core/os/semaphore.h
index f3021bf74c..6cec06ea28 100644
--- a/core/os/semaphore.h
+++ b/core/os/semaphore.h
@@ -31,11 +31,12 @@
 #ifndef SEMAPHORE_H
 #define SEMAPHORE_H
 
-#include "error_list.h"
+#include "core/error_list.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class Semaphore {
 protected:
 	static Semaphore *(*create_func)();
diff --git a/core/os/shell.h b/core/os/shell.h
index d3d92028ea..146c35cbc8 100644
--- a/core/os/shell.h
+++ b/core/os/shell.h
@@ -31,8 +31,8 @@
 #ifndef SHELL_H
 #define SHELL_H
 
-#include "typedefs.h"
-#include "ustring.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/os/thread.h b/core/os/thread.h
index c2947bccab..97e97652a5 100644
--- a/core/os/thread.h
+++ b/core/os/thread.h
@@ -31,13 +31,13 @@
 #ifndef THREAD_H
 #define THREAD_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "ustring.h"
-
 typedef void (*ThreadCreateCallback)(void *p_userdata);
 
 class Thread {
diff --git a/core/os/thread_dummy.cpp b/core/os/thread_dummy.cpp
index b6371235c4..9e0adf9994 100644
--- a/core/os/thread_dummy.cpp
+++ b/core/os/thread_dummy.cpp
@@ -30,7 +30,7 @@
 
 #include "thread_dummy.h"
 
-#include "memory.h"
+#include "core/os/memory.h"
 
 Thread *ThreadDummy::create(ThreadCreateCallback p_callback, void *p_user, const Thread::Settings &p_settings) {
 	return memnew(ThreadDummy);
diff --git a/core/os/thread_dummy.h b/core/os/thread_dummy.h
index 74957b95fe..6f46a4a20c 100644
--- a/core/os/thread_dummy.h
+++ b/core/os/thread_dummy.h
@@ -31,10 +31,10 @@
 #ifndef THREAD_DUMMY_H
 #define THREAD_DUMMY_H
 
-#include "mutex.h"
-#include "rw_lock.h"
-#include "semaphore.h"
-#include "thread.h"
+#include "core/os/mutex.h"
+#include "core/os/rw_lock.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
 
 class ThreadDummy : public Thread {
 
diff --git a/core/os/thread_safe.cpp b/core/os/thread_safe.cpp
index acb37df02b..3fe039e1b6 100644
--- a/core/os/thread_safe.cpp
+++ b/core/os/thread_safe.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "thread_safe.h"
-#include "error_macros.h"
-#include "os/memory.h"
+
+#include "core/error_macros.h"
+#include "core/os/memory.h"
 
 ThreadSafe::ThreadSafe() {
 
diff --git a/core/os/thread_safe.h b/core/os/thread_safe.h
index f0876f38a1..a17ceeed1d 100644
--- a/core/os/thread_safe.h
+++ b/core/os/thread_safe.h
@@ -31,7 +31,7 @@
 #ifndef THREAD_SAFE_H
 #define THREAD_SAFE_H
 
-#include "os/mutex.h"
+#include "core/os/mutex.h"
 
 class ThreadSafe {
 
diff --git a/core/os/threaded_array_processor.h b/core/os/threaded_array_processor.h
index 3ff7db2a44..89c3b7cec3 100644
--- a/core/os/threaded_array_processor.h
+++ b/core/os/threaded_array_processor.h
@@ -31,11 +31,11 @@
 #ifndef THREADED_ARRAY_PROCESSOR_H
 #define THREADED_ARRAY_PROCESSOR_H
 
-#include "os/mutex.h"
-#include "os/os.h"
-#include "os/thread.h"
-#include "safe_refcount.h"
-#include "thread_safe.h"
+#include "core/os/mutex.h"
+#include "core/os/os.h"
+#include "core/os/thread.h"
+#include "core/os/thread_safe.h"
+#include "core/safe_refcount.h"
 
 template <class C, class U>
 struct ThreadArrayProcessData {
diff --git a/core/packed_data_container.cpp b/core/packed_data_container.cpp
index 45e060fa4a..e4ca8fafa5 100644
--- a/core/packed_data_container.cpp
+++ b/core/packed_data_container.cpp
@@ -30,8 +30,8 @@
 
 #include "packed_data_container.h"
 
-#include "core_string_names.h"
-#include "io/marshalls.h"
+#include "core/core_string_names.h"
+#include "core/io/marshalls.h"
 
 Variant PackedDataContainer::getvar(const Variant &p_key, bool *r_valid) const {
 
diff --git a/core/packed_data_container.h b/core/packed_data_container.h
index fe36417000..0e1dff1f70 100644
--- a/core/packed_data_container.h
+++ b/core/packed_data_container.h
@@ -31,7 +31,7 @@
 #ifndef PACKED_DATA_CONTAINER_H
 #define PACKED_DATA_CONTAINER_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 class PackedDataContainer : public Resource {
 
diff --git a/core/pool_allocator.cpp b/core/pool_allocator.cpp
index 8952314212..6997c993f4 100644
--- a/core/pool_allocator.cpp
+++ b/core/pool_allocator.cpp
@@ -30,11 +30,11 @@
 
 #include "pool_allocator.h"
 
+#include "core/error_macros.h"
+#include "core/os/copymem.h"
+#include "core/os/memory.h"
 #include "core/os/os.h"
-#include "error_macros.h"
-#include "os/copymem.h"
-#include "os/memory.h"
-#include "print_string.h"
+#include "core/print_string.h"
 
 #include <assert.h>
 
diff --git a/core/pool_allocator.h b/core/pool_allocator.h
index d9731aa3eb..12e2b597db 100644
--- a/core/pool_allocator.h
+++ b/core/pool_allocator.h
@@ -31,7 +31,7 @@
 #ifndef POOL_ALLOCATOR_H
 #define POOL_ALLOCATOR_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/print_string.cpp b/core/print_string.cpp
index e1e42d2b56..f53d50e078 100644
--- a/core/print_string.cpp
+++ b/core/print_string.cpp
@@ -30,7 +30,7 @@
 
 #include "print_string.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 #include <stdio.h>
 
diff --git a/core/print_string.h b/core/print_string.h
index c1d2d0ff3a..8f4fbb1f7b 100644
--- a/core/print_string.h
+++ b/core/print_string.h
@@ -31,7 +31,7 @@
 #ifndef PRINT_STRING_H
 #define PRINT_STRING_H
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 extern void (*_print_func)(String);
 
diff --git a/core/project_settings.cpp b/core/project_settings.cpp
index 890789ec6f..04e09fb12e 100644
--- a/core/project_settings.cpp
+++ b/core/project_settings.cpp
@@ -30,16 +30,17 @@
 
 #include "project_settings.h"
 
-#include "bind/core_bind.h"
-#include "core_string_names.h"
-#include "io/file_access_network.h"
-#include "io/file_access_pack.h"
-#include "io/marshalls.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "variant_parser.h"
+#include "core/bind/core_bind.h"
+#include "core/core_string_names.h"
+#include "core/io/file_access_network.h"
+#include "core/io/file_access_pack.h"
+#include "core/io/marshalls.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/variant_parser.h"
+
 #include <zlib.h>
 
 #define FORMAT_VERSION 4
diff --git a/core/project_settings.h b/core/project_settings.h
index 75ebc5acc8..611355f2ef 100644
--- a/core/project_settings.h
+++ b/core/project_settings.h
@@ -31,9 +31,10 @@
 #ifndef GLOBAL_CONFIG_H
 #define GLOBAL_CONFIG_H
 
-#include "object.h"
-#include "os/thread_safe.h"
-#include "set.h"
+#include "core/object.h"
+#include "core/os/thread_safe.h"
+#include "core/set.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/ref_ptr.cpp b/core/ref_ptr.cpp
index e3ef817df1..7f0cc0cd75 100644
--- a/core/ref_ptr.cpp
+++ b/core/ref_ptr.cpp
@@ -30,8 +30,8 @@
 
 #include "ref_ptr.h"
 
-#include "reference.h"
-#include "resource.h"
+#include "core/reference.h"
+#include "core/resource.h"
 
 void RefPtr::operator=(const RefPtr &p_other) {
 
diff --git a/core/ref_ptr.h b/core/ref_ptr.h
index a074718d22..3f15c680b8 100644
--- a/core/ref_ptr.h
+++ b/core/ref_ptr.h
@@ -36,7 +36,7 @@
  * It's basically an opaque container of a Reference reference, so Variant can use it.
 */
 
-#include "rid.h"
+#include "core/rid.h"
 
 class RefPtr {
 
diff --git a/core/reference.cpp b/core/reference.cpp
index 6e1520d81d..b79ad0bf3d 100644
--- a/core/reference.cpp
+++ b/core/reference.cpp
@@ -30,7 +30,7 @@
 
 #include "reference.h"
 
-#include "script_language.h"
+#include "core/script_language.h"
 
 bool Reference::init_ref() {
 
diff --git a/core/reference.h b/core/reference.h
index 25e02180fa..4c607fed87 100644
--- a/core/reference.h
+++ b/core/reference.h
@@ -31,10 +31,10 @@
 #ifndef REFERENCE_H
 #define REFERENCE_H
 
-#include "class_db.h"
-#include "object.h"
-#include "ref_ptr.h"
-#include "safe_refcount.h"
+#include "core/class_db.h"
+#include "core/object.h"
+#include "core/ref_ptr.h"
+#include "core/safe_refcount.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/register_core_types.cpp b/core/register_core_types.cpp
index 859015f44b..d93cad3f94 100644
--- a/core/register_core_types.cpp
+++ b/core/register_core_types.cpp
@@ -30,40 +30,40 @@
 
 #include "register_core_types.h"
 
-#include "bind/core_bind.h"
-#include "class_db.h"
-#include "compressed_translation.h"
+#include "core/bind/core_bind.h"
+#include "core/class_db.h"
+#include "core/compressed_translation.h"
+#include "core/core_string_names.h"
+#include "core/engine.h"
+#include "core/func_ref.h"
+#include "core/input_map.h"
+#include "core/io/config_file.h"
+#include "core/io/http_client.h"
+#include "core/io/image_loader.h"
+#include "core/io/marshalls.h"
+#include "core/io/multiplayer_api.h"
+#include "core/io/networked_multiplayer_peer.h"
+#include "core/io/packet_peer.h"
+#include "core/io/packet_peer_udp.h"
+#include "core/io/pck_packer.h"
+#include "core/io/resource_format_binary.h"
+#include "core/io/resource_import.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/tcp_server.h"
+#include "core/io/translation_loader_po.h"
 #include "core/io/xml_parser.h"
-#include "core_string_names.h"
-#include "engine.h"
-#include "func_ref.h"
-#include "geometry.h"
-#include "input_map.h"
-#include "io/config_file.h"
-#include "io/http_client.h"
-#include "io/image_loader.h"
-#include "io/marshalls.h"
-#include "io/multiplayer_api.h"
-#include "io/networked_multiplayer_peer.h"
-#include "io/packet_peer.h"
-#include "io/packet_peer_udp.h"
-#include "io/pck_packer.h"
-#include "io/resource_format_binary.h"
-#include "io/resource_import.h"
-#include "io/stream_peer_ssl.h"
-#include "io/tcp_server.h"
-#include "io/translation_loader_po.h"
-#include "math/a_star.h"
-#include "math/expression.h"
-#include "math/triangle_mesh.h"
-#include "os/input.h"
-#include "os/main_loop.h"
-#include "packed_data_container.h"
-#include "path_remap.h"
-#include "project_settings.h"
-#include "translation.h"
-
-#include "undo_redo.h"
+#include "core/math/a_star.h"
+#include "core/math/expression.h"
+#include "core/math/geometry.h"
+#include "core/math/triangle_mesh.h"
+#include "core/os/input.h"
+#include "core/os/main_loop.h"
+#include "core/packed_data_container.h"
+#include "core/path_remap.h"
+#include "core/project_settings.h"
+#include "core/translation.h"
+#include "core/undo_redo.h"
+
 static ResourceFormatSaverBinary *resource_saver_binary = NULL;
 static ResourceFormatLoaderBinary *resource_loader_binary = NULL;
 static ResourceFormatImporter *resource_format_importer = NULL;
@@ -156,7 +156,6 @@ void register_core_types() {
 	ClassDB::register_virtual_class<NetworkedMultiplayerPeer>();
 	ClassDB::register_class<MultiplayerAPI>();
 	ClassDB::register_class<MainLoop>();
-	//ClassDB::register_type<OptimizedSaver>();
 	ClassDB::register_class<Translation>();
 	ClassDB::register_class<PHashTranslation>();
 	ClassDB::register_class<UndoRedo>();
diff --git a/core/resource.cpp b/core/resource.cpp
index f447f785b1..4dcd338e94 100644
--- a/core/resource.cpp
+++ b/core/resource.cpp
@@ -30,11 +30,12 @@
 
 #include "resource.h"
 
-#include "core_string_names.h"
-#include "io/resource_loader.h"
-#include "os/file_access.h"
+#include "core/core_string_names.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/script_language.h"
 #include "scene/main/node.h" //only so casting works
-#include "script_language.h"
+
 #include <stdio.h>
 
 void Resource::emit_changed() {
diff --git a/core/resource.h b/core/resource.h
index 60c63bfe7f..b2812c11e1 100644
--- a/core/resource.h
+++ b/core/resource.h
@@ -31,12 +31,12 @@
 #ifndef RESOURCE_H
 #define RESOURCE_H
 
-#include "class_db.h"
-#include "object.h"
-#include "ref_ptr.h"
-#include "reference.h"
-#include "safe_refcount.h"
-#include "self_list.h"
+#include "core/class_db.h"
+#include "core/object.h"
+#include "core/ref_ptr.h"
+#include "core/reference.h"
+#include "core/safe_refcount.h"
+#include "core/self_list.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/rid.h b/core/rid.h
index 42306aea36..fbb3e443fc 100644
--- a/core/rid.h
+++ b/core/rid.h
@@ -31,11 +31,11 @@
 #ifndef RID_H
 #define RID_H
 
-#include "list.h"
-#include "os/memory.h"
-#include "safe_refcount.h"
-#include "set.h"
-#include "typedefs.h"
+#include "core/list.h"
+#include "core/os/memory.h"
+#include "core/safe_refcount.h"
+#include "core/set.h"
+#include "core/typedefs.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/ring_buffer.h b/core/ring_buffer.h
index 00628a4ab3..2516880064 100644
--- a/core/ring_buffer.h
+++ b/core/ring_buffer.h
@@ -31,7 +31,7 @@
 #ifndef RINGBUFFER_H
 #define RINGBUFFER_H
 
-#include "vector.h"
+#include "core/vector.h"
 
 template <typename T>
 class RingBuffer {
diff --git a/core/safe_refcount.h b/core/safe_refcount.h
index 36bcf5e576..940d31b2cb 100644
--- a/core/safe_refcount.h
+++ b/core/safe_refcount.h
@@ -31,11 +31,9 @@
 #ifndef SAFE_REFCOUNT_H
 #define SAFE_REFCOUNT_H
 
-#include "os/mutex.h"
-/* x86/x86_64 GCC */
-
+#include "core/os/mutex.h"
+#include "core/typedefs.h"
 #include "platform_config.h"
-#include "typedefs.h"
 
 // Atomic functions, these are used for multithread safe reference counters!
 
diff --git a/core/script_debugger_local.cpp b/core/script_debugger_local.cpp
index 6949b5802b..7093c3ebdb 100644
--- a/core/script_debugger_local.cpp
+++ b/core/script_debugger_local.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "script_debugger_local.h"
-#include "scene/main/scene_tree.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
+#include "scene/main/scene_tree.h"
 
 void ScriptDebuggerLocal::debug(ScriptLanguage *p_script, bool p_can_continue) {
 
diff --git a/core/script_debugger_local.h b/core/script_debugger_local.h
index 7eea6ef215..1f7b5c590c 100644
--- a/core/script_debugger_local.h
+++ b/core/script_debugger_local.h
@@ -31,8 +31,8 @@
 #ifndef SCRIPT_DEBUGGER_LOCAL_H
 #define SCRIPT_DEBUGGER_LOCAL_H
 
-#include "list.h"
-#include "script_language.h"
+#include "core/list.h"
+#include "core/script_language.h"
 
 class ScriptDebuggerLocal : public ScriptDebugger {
 
diff --git a/core/script_debugger_remote.cpp b/core/script_debugger_remote.cpp
index d97d59d310..ac684af6fe 100644
--- a/core/script_debugger_remote.cpp
+++ b/core/script_debugger_remote.cpp
@@ -30,12 +30,12 @@
 
 #include "script_debugger_remote.h"
 
-#include "engine.h"
-#include "io/ip.h"
-#include "io/marshalls.h"
-#include "os/input.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/io/ip.h"
+#include "core/io/marshalls.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/main/node.h"
 #include "scene/resources/packed_scene.h"
 
diff --git a/core/script_debugger_remote.h b/core/script_debugger_remote.h
index b68fc4f9c9..5cd3a23a37 100644
--- a/core/script_debugger_remote.h
+++ b/core/script_debugger_remote.h
@@ -31,11 +31,11 @@
 #ifndef SCRIPT_DEBUGGER_REMOTE_H
 #define SCRIPT_DEBUGGER_REMOTE_H
 
-#include "io/packet_peer.h"
-#include "io/stream_peer_tcp.h"
-#include "list.h"
-#include "os/os.h"
-#include "script_language.h"
+#include "core/io/packet_peer.h"
+#include "core/io/stream_peer_tcp.h"
+#include "core/list.h"
+#include "core/os/os.h"
+#include "core/script_language.h"
 
 class ScriptDebuggerRemote : public ScriptDebugger {
 
diff --git a/core/script_language.cpp b/core/script_language.cpp
index e146fb773c..5b65da9ef1 100644
--- a/core/script_language.cpp
+++ b/core/script_language.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "script_language.h"
-#include "project_settings.h"
+
+#include "core/project_settings.h"
 
 ScriptLanguage *ScriptServer::_languages[MAX_LANGUAGES];
 int ScriptServer::_language_count = 0;
diff --git a/core/script_language.h b/core/script_language.h
index 573e7b4fa1..bcd9c2c5ea 100644
--- a/core/script_language.h
+++ b/core/script_language.h
@@ -31,10 +31,11 @@
 #ifndef SCRIPT_LANGUAGE_H
 #define SCRIPT_LANGUAGE_H
 
-#include "io/multiplayer_api.h"
-#include "map.h"
-#include "pair.h"
-#include "resource.h"
+#include "core/io/multiplayer_api.h"
+#include "core/map.h"
+#include "core/pair.h"
+#include "core/resource.h"
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/self_list.h b/core/self_list.h
index 6e84e1cd5f..9a4ecdeef9 100644
--- a/core/self_list.h
+++ b/core/self_list.h
@@ -31,7 +31,7 @@
 #ifndef SELF_LIST_H
 #define SELF_LIST_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 template <class T>
 class SelfList {
diff --git a/core/set.h b/core/set.h
index d79dd81644..744019d5b4 100644
--- a/core/set.h
+++ b/core/set.h
@@ -31,8 +31,8 @@
 #ifndef SET_H
 #define SET_H
 
-#include "os/memory.h"
-#include "typedefs.h"
+#include "core/os/memory.h"
+#include "core/typedefs.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/core/sort.h b/core/sort.h
index 97983829e1..e112304d1b 100644
--- a/core/sort.h
+++ b/core/sort.h
@@ -31,10 +31,7 @@
 #ifndef SORT_H
 #define SORT_H
 
-#include "typedefs.h"
-/**
-	@author ,,, <red@lunatea>
-*/
+#include "core/typedefs.h"
 
 #define ERR_BAD_COMPARE(cond)                                         \
 	if (unlikely(cond)) {                                             \
diff --git a/core/string_buffer.h b/core/string_buffer.h
index 5d3be0ecf1..38dce5e6bf 100644
--- a/core/string_buffer.h
+++ b/core/string_buffer.h
@@ -31,8 +31,7 @@
 #ifndef STRING_BUFFER_H
 #define STRING_BUFFER_H
 
-#include "ustring.h"
-#include <string.h>
+#include "core/ustring.h"
 
 template <int SHORT_BUFFER_SIZE = 64>
 class StringBuffer {
diff --git a/core/string_db.cpp b/core/string_db.cpp
index 067e4493a1..a798df8795 100644
--- a/core/string_db.cpp
+++ b/core/string_db.cpp
@@ -30,8 +30,8 @@
 
 #include "string_db.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 StaticCString StaticCString::create(const char *p_ptr) {
 	StaticCString scs;
diff --git a/core/string_db.h b/core/string_db.h
index 965385b136..46bb77df93 100644
--- a/core/string_db.h
+++ b/core/string_db.h
@@ -31,9 +31,9 @@
 #ifndef STRING_DB_H
 #define STRING_DB_H
 
-#include "os/mutex.h"
-#include "safe_refcount.h"
-#include "ustring.h"
+#include "core/os/mutex.h"
+#include "core/safe_refcount.h"
+#include "core/ustring.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/core/translation.cpp b/core/translation.cpp
index 82a16d0b17..ce9b338ef6 100644
--- a/core/translation.cpp
+++ b/core/translation.cpp
@@ -30,9 +30,9 @@
 
 #include "translation.h"
 
-#include "io/resource_loader.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/io/resource_loader.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 // ISO 639-1 language codes, with the addition of glibc locales with their
 // regional identifiers. This list must match the language names (in English)
diff --git a/core/translation.h b/core/translation.h
index e7c0dcbc07..be626f4eb9 100644
--- a/core/translation.h
+++ b/core/translation.h
@@ -31,7 +31,7 @@
 #ifndef TRANSLATION_H
 #define TRANSLATION_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 class Translation : public Resource {
 
diff --git a/core/typedefs.h b/core/typedefs.h
index 094f1bbfd5..76778429b0 100644
--- a/core/typedefs.h
+++ b/core/typedefs.h
@@ -32,6 +32,7 @@
 #define TYPEDEFS_H
 
 #include <stddef.h>
+
 /**
  * Basic definitions and simple functions to be used everywhere.
  */
@@ -96,10 +97,10 @@ T *_nullptr() {
 #undef CONNECT_DEFERRED // override from Windows SDK, clashes with Object enum
 #endif
 
-#include "int_types.h"
+#include "core/int_types.h"
 
-#include "error_list.h"
-#include "error_macros.h"
+#include "core/error_list.h"
+#include "core/error_macros.h"
 
 /** Generic ABS function, for math uses please use Math::abs */
 
diff --git a/core/undo_redo.cpp b/core/undo_redo.cpp
index 3d90608dd7..7d67076df5 100644
--- a/core/undo_redo.cpp
+++ b/core/undo_redo.cpp
@@ -30,7 +30,7 @@
 
 #include "undo_redo.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 void UndoRedo::_discard_redo() {
 
diff --git a/core/undo_redo.h b/core/undo_redo.h
index 3a17c78851..22dcd60472 100644
--- a/core/undo_redo.h
+++ b/core/undo_redo.h
@@ -31,8 +31,8 @@
 #ifndef UNDO_REDO_H
 #define UNDO_REDO_H
 
-#include "object.h"
-#include "resource.h"
+#include "core/object.h"
+#include "core/resource.h"
 
 class UndoRedo : public Object {
 
diff --git a/core/ustring.cpp b/core/ustring.cpp
index 96e3a3d784..e46896ca85 100644
--- a/core/ustring.cpp
+++ b/core/ustring.cpp
@@ -30,12 +30,13 @@
 
 #include "ustring.h"
 
-#include "color.h"
-#include "math_funcs.h"
-#include "os/memory.h"
-#include "print_string.h"
-#include "ucaps.h"
-#include "variant.h"
+#include "core/color.h"
+#include "core/math/math_funcs.h"
+#include "core/os/memory.h"
+#include "core/print_string.h"
+#include "core/translation.h"
+#include "core/ucaps.h"
+#include "core/variant.h"
 
 #include "thirdparty/misc/md5.h"
 #include "thirdparty/misc/sha256.h"
@@ -4204,8 +4205,6 @@ String String::unquote() const {
 	return substr(1, length() - 2);
 }
 
-#include "translation.h"
-
 #ifdef TOOLS_ENABLED
 String TTR(const String &p_text) {
 
diff --git a/core/ustring.h b/core/ustring.h
index 01397f6912..d2766ec7a3 100644
--- a/core/ustring.h
+++ b/core/ustring.h
@@ -28,16 +28,16 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef RSTRING_H
-#define RSTRING_H
+#ifndef USTRING_H
+#define USTRING_H
 
-#include "array.h"
-#include "cowdata.h"
-#include "typedefs.h"
-#include "vector.h"
+#include "core/array.h"
+#include "core/cowdata.h"
+#include "core/typedefs.h"
+#include "core/vector.h"
 
 /**
-	@author red <red@killy>
+	@author Juan Linietsky <reduzio@gmail.com>
 */
 
 class CharString {
@@ -366,4 +366,4 @@ String RTR(const String &);
 bool is_symbol(CharType c);
 bool select_word(const String &p_s, int p_col, int &r_beg, int &r_end);
 
-#endif
+#endif // USTRING_H
diff --git a/core/variant.cpp b/core/variant.cpp
index b0e97900a2..7d75c2243b 100644
--- a/core/variant.cpp
+++ b/core/variant.cpp
@@ -30,14 +30,14 @@
 
 #include "variant.h"
 
-#include "core_string_names.h"
-#include "io/marshalls.h"
-#include "math_funcs.h"
-#include "print_string.h"
-#include "resource.h"
+#include "core/core_string_names.h"
+#include "core/io/marshalls.h"
+#include "core/math/math_funcs.h"
+#include "core/print_string.h"
+#include "core/resource.h"
+#include "core/variant_parser.h"
 #include "scene/gui/control.h"
 #include "scene/main/node.h"
-#include "variant_parser.h"
 
 String Variant::get_type_name(Variant::Type p_type) {
 
diff --git a/core/variant.h b/core/variant.h
index 577a33aa4d..2fffb31de6 100644
--- a/core/variant.h
+++ b/core/variant.h
@@ -35,23 +35,23 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "aabb.h"
-#include "array.h"
-#include "color.h"
-#include "dictionary.h"
-#include "dvector.h"
-#include "face3.h"
-#include "io/ip_address.h"
-#include "matrix3.h"
-#include "node_path.h"
-#include "plane.h"
-#include "quat.h"
-#include "ref_ptr.h"
-#include "rid.h"
-#include "transform.h"
-#include "transform_2d.h"
-#include "ustring.h"
-#include "vector3.h"
+#include "core/array.h"
+#include "core/color.h"
+#include "core/dictionary.h"
+#include "core/dvector.h"
+#include "core/io/ip_address.h"
+#include "core/math/aabb.h"
+#include "core/math/face3.h"
+#include "core/math/matrix3.h"
+#include "core/math/plane.h"
+#include "core/math/quat.h"
+#include "core/math/transform.h"
+#include "core/math/transform_2d.h"
+#include "core/math/vector3.h"
+#include "core/node_path.h"
+#include "core/ref_ptr.h"
+#include "core/rid.h"
+#include "core/ustring.h"
 
 class RefPtr;
 class Object;
diff --git a/core/variant_call.cpp b/core/variant_call.cpp
index 8b18b274b6..f7fa2ebc70 100644
--- a/core/variant_call.cpp
+++ b/core/variant_call.cpp
@@ -31,11 +31,11 @@
 #include "variant.h"
 
 #include "core/color_names.inc"
-#include "core_string_names.h"
-#include "io/compression.h"
-#include "object.h"
-#include "os/os.h"
-#include "script_language.h"
+#include "core/core_string_names.h"
+#include "core/io/compression.h"
+#include "core/object.h"
+#include "core/os/os.h"
+#include "core/script_language.h"
 
 typedef void (*VariantFunc)(Variant &r_ret, Variant &p_self, const Variant **p_args);
 typedef void (*VariantConstructFunc)(Variant &r_ret, const Variant **p_args);
diff --git a/core/variant_op.cpp b/core/variant_op.cpp
index bfa69b1fde..2edf33ec1c 100644
--- a/core/variant_op.cpp
+++ b/core/variant_op.cpp
@@ -30,9 +30,9 @@
 
 #include "variant.h"
 
-#include "core_string_names.h"
-#include "object.h"
-#include "script_language.h"
+#include "core/core_string_names.h"
+#include "core/object.h"
+#include "core/script_language.h"
 
 #define CASE_TYPE_ALL(PREFIX, OP) \
 	CASE_TYPE(PREFIX, OP, INT)    \
diff --git a/core/variant_parser.cpp b/core/variant_parser.cpp
index 446aee286d..2c45c6b3ed 100644
--- a/core/variant_parser.cpp
+++ b/core/variant_parser.cpp
@@ -30,10 +30,10 @@
 
 #include "variant_parser.h"
 
+#include "core/io/resource_loader.h"
+#include "core/os/input_event.h"
+#include "core/os/keyboard.h"
 #include "core/string_buffer.h"
-#include "io/resource_loader.h"
-#include "os/input_event.h"
-#include "os/keyboard.h"
 
 CharType VariantParser::StreamFile::get_char() {
 
diff --git a/core/variant_parser.h b/core/variant_parser.h
index 8d95595234..531c1d59cd 100644
--- a/core/variant_parser.h
+++ b/core/variant_parser.h
@@ -31,9 +31,9 @@
 #ifndef VARIANT_PARSER_H
 #define VARIANT_PARSER_H
 
-#include "os/file_access.h"
-#include "resource.h"
-#include "variant.h"
+#include "core/os/file_access.h"
+#include "core/resource.h"
+#include "core/variant.h"
 
 class VariantParser {
 public:
diff --git a/core/vector.h b/core/vector.h
index 52e8758f9b..38a1082407 100644
--- a/core/vector.h
+++ b/core/vector.h
@@ -36,10 +36,11 @@
  * @author Juan Linietsky
  * Vector container. Regular Vector Container. Use with care and for smaller arrays when possible. Use PoolVector for large arrays.
 */
-#include "cowdata.h"
-#include "error_macros.h"
-#include "os/memory.h"
-#include "sort.h"
+
+#include "core/cowdata.h"
+#include "core/error_macros.h"
+#include "core/os/memory.h"
+#include "core/sort.h"
 
 template <class T>
 class VectorWriteProxy {
diff --git a/core/version.h b/core/version.h
index d39172865a..2a3a282d82 100644
--- a/core/version.h
+++ b/core/version.h
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "version_generated.gen.h"
+#include "core/version_generated.gen.h"
 
 // Godot versions are of the form <major>.<minor> for the initial release,
 // and then <major>.<minor>.<patch> for subsequent bugfix releases where <patch> != 0
diff --git a/core/vmap.h b/core/vmap.h
index ce0ddc4ec6..9fc99e636d 100644
--- a/core/vmap.h
+++ b/core/vmap.h
@@ -31,8 +31,8 @@
 #ifndef VMAP_H
 #define VMAP_H
 
-#include "cowdata.h"
-#include "typedefs.h"
+#include "core/cowdata.h"
+#include "core/typedefs.h"
 
 template <class T, class V>
 class VMap {
diff --git a/core/vset.h b/core/vset.h
index 7f4d8e7f62..9ec329b45f 100644
--- a/core/vset.h
+++ b/core/vset.h
@@ -31,8 +31,8 @@
 #ifndef VSET_H
 #define VSET_H
 
-#include "typedefs.h"
-#include "vector.h"
+#include "core/typedefs.h"
+#include "core/vector.h"
 
 template <class T>
 class VSet {
diff --git a/drivers/alsa/audio_driver_alsa.cpp b/drivers/alsa/audio_driver_alsa.cpp
index 1f53d52951..50697b8834 100644
--- a/drivers/alsa/audio_driver_alsa.cpp
+++ b/drivers/alsa/audio_driver_alsa.cpp
@@ -32,8 +32,8 @@
 
 #ifdef ALSA_ENABLED
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include <errno.h>
 
diff --git a/drivers/alsamidi/alsa_midi.cpp b/drivers/alsamidi/alsa_midi.cpp
index 599470d7e0..33ad7e3f17 100644
--- a/drivers/alsamidi/alsa_midi.cpp
+++ b/drivers/alsamidi/alsa_midi.cpp
@@ -30,11 +30,12 @@
 
 #ifdef ALSAMIDI_ENABLED
 
-#include <errno.h>
-
 #include "alsa_midi.h"
-#include "os/os.h"
-#include "print_string.h"
+
+#include "core/os/os.h"
+#include "core/print_string.h"
+
+#include <errno.h>
 
 static int get_message_size(uint8_t message) {
 	switch (message & 0xF0) {
diff --git a/drivers/alsamidi/alsa_midi.h b/drivers/alsamidi/alsa_midi.h
index 90e458a365..5741036166 100644
--- a/drivers/alsamidi/alsa_midi.h
+++ b/drivers/alsamidi/alsa_midi.h
@@ -33,13 +33,13 @@
 #ifndef ALSA_MIDI_H
 #define ALSA_MIDI_H
 
-#include <alsa/asoundlib.h>
-#include <stdio.h>
-
+#include "core/os/midi_driver.h"
 #include "core/os/mutex.h"
 #include "core/os/thread.h"
 #include "core/vector.h"
-#include "os/midi_driver.h"
+
+#include <alsa/asoundlib.h>
+#include <stdio.h>
 
 class MIDIDriverALSAMidi : public MIDIDriver {
 
diff --git a/drivers/convex_decomp/b2d_decompose.h b/drivers/convex_decomp/b2d_decompose.h
index b21792047e..f6b08b957c 100644
--- a/drivers/convex_decomp/b2d_decompose.h
+++ b/drivers/convex_decomp/b2d_decompose.h
@@ -31,8 +31,9 @@
 #ifndef B2D_DECOMPOSE_H
 #define B2D_DECOMPOSE_H
 
-#include "vector.h"
-#include "vector2.h"
+#include "core/math/vector2.h"
+#include "core/vector.h"
+
 Vector<Vector<Vector2> > b2d_decompose(const Vector<Vector2> &p_polygon);
 
 #endif // B2D_DECOMPOSE_H
diff --git a/drivers/coreaudio/audio_driver_coreaudio.cpp b/drivers/coreaudio/audio_driver_coreaudio.cpp
index 45d62e797f..09e50e4aaa 100644
--- a/drivers/coreaudio/audio_driver_coreaudio.cpp
+++ b/drivers/coreaudio/audio_driver_coreaudio.cpp
@@ -31,8 +31,9 @@
 #ifdef COREAUDIO_ENABLED
 
 #include "audio_driver_coreaudio.h"
+
+#include "core/os/os.h"
 #include "core/project_settings.h"
-#include "os/os.h"
 
 #define kOutputBus 0
 #define kInputBus 1
diff --git a/drivers/coremidi/core_midi.cpp b/drivers/coremidi/core_midi.cpp
index 6d4624e05b..e8106c4543 100644
--- a/drivers/coremidi/core_midi.cpp
+++ b/drivers/coremidi/core_midi.cpp
@@ -31,7 +31,8 @@
 #ifdef COREMIDI_ENABLED
 
 #include "core_midi.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
 
 #include <CoreAudio/HostTime.h>
 #include <CoreServices/CoreServices.h>
diff --git a/drivers/coremidi/core_midi.h b/drivers/coremidi/core_midi.h
index c6b443764f..ea6b0fcb06 100644
--- a/drivers/coremidi/core_midi.h
+++ b/drivers/coremidi/core_midi.h
@@ -33,12 +33,11 @@
 #ifndef CORE_MIDI_H
 #define CORE_MIDI_H
 
-#include <stdio.h>
+#include "core/os/midi_driver.h"
+#include "core/vector.h"
 
 #include <CoreMIDI/CoreMIDI.h>
-
-#include "core/vector.h"
-#include "os/midi_driver.h"
+#include <stdio.h>
 
 class MIDIDriverCoreMidi : public MIDIDriver {
 
diff --git a/drivers/dummy/rasterizer_dummy.h b/drivers/dummy/rasterizer_dummy.h
index 0381d3f0c1..bb4511ecc3 100644
--- a/drivers/dummy/rasterizer_dummy.h
+++ b/drivers/dummy/rasterizer_dummy.h
@@ -27,16 +27,16 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef RASTERIZER_DUMMY_H
 #define RASTERIZER_DUMMY_H
 
-#include "camera_matrix.h"
+#include "core/math/camera_matrix.h"
+#include "core/self_list.h"
 #include "scene/resources/mesh.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
 
-#include "self_list.h"
-
 class RasterizerSceneDummy : public RasterizerScene {
 public:
 	/* SHADOW ATLAS API */
diff --git a/drivers/dummy/texture_loader_dummy.cpp b/drivers/dummy/texture_loader_dummy.cpp
index b099019d17..8153fbd10b 100644
--- a/drivers/dummy/texture_loader_dummy.cpp
+++ b/drivers/dummy/texture_loader_dummy.cpp
@@ -29,8 +29,10 @@
 /*************************************************************************/
 
 #include "texture_loader_dummy.h"
+
 #include "core/os/file_access.h"
-#include "print_string.h"
+#include "core/print_string.h"
+
 #include <string.h>
 
 RES ResourceFormatDummyTexture::load(const String &p_path, const String &p_original_path, Error *r_error) {
diff --git a/drivers/gl_context/context_gl.h b/drivers/gl_context/context_gl.h
index 60781a3453..37f334454b 100644
--- a/drivers/gl_context/context_gl.h
+++ b/drivers/gl_context/context_gl.h
@@ -33,7 +33,7 @@
 
 #if defined(OPENGL_ENABLED) || defined(GLES_ENABLED)
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/drivers/gles2/rasterizer_canvas_gles2.cpp b/drivers/gles2/rasterizer_canvas_gles2.cpp
index 9a9ede761a..f28fd59a0c 100644
--- a/drivers/gles2/rasterizer_canvas_gles2.cpp
+++ b/drivers/gles2/rasterizer_canvas_gles2.cpp
@@ -27,11 +27,14 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #include "rasterizer_canvas_gles2.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "rasterizer_scene_gles2.h"
 #include "servers/visual/visual_server_raster.h"
+
 #ifndef GLES_OVER_GL
 #define glClearDepth glClearDepthf
 #endif
diff --git a/drivers/gles2/rasterizer_gles2.cpp b/drivers/gles2/rasterizer_gles2.cpp
index efeab48ea2..bd03bd71f6 100644
--- a/drivers/gles2/rasterizer_gles2.cpp
+++ b/drivers/gles2/rasterizer_gles2.cpp
@@ -27,12 +27,12 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #include "rasterizer_gles2.h"
 
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "gl_context/context_gl.h"
-#include "os/os.h"
-#include "project_settings.h"
-#include <string.h>
 
 #define _EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB 0x8242
 #define _EXT_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243
diff --git a/drivers/gles2/rasterizer_gles2.h b/drivers/gles2/rasterizer_gles2.h
index 98c73b776b..c76d5f7f20 100644
--- a/drivers/gles2/rasterizer_gles2.h
+++ b/drivers/gles2/rasterizer_gles2.h
@@ -27,6 +27,7 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef RASTERIZERGLES2_H
 #define RASTERIZERGLES2_H
 
diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index e21998d55e..ca9f6dcbf8 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -27,16 +27,17 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #include "rasterizer_scene_gles2.h"
-#include "math/transform.h"
-#include "math_funcs.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/math/math_funcs.h"
+#include "core/math/transform.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/vmap.h"
 #include "rasterizer_canvas_gles2.h"
 #include "servers/visual/visual_server_raster.h"
 
-#include "vmap.h"
-
 #ifndef GLES_OVER_GL
 #define glClearDepth glClearDepthf
 #endif
diff --git a/drivers/gles2/rasterizer_scene_gles2.h b/drivers/gles2/rasterizer_scene_gles2.h
index 72dbe14387..c5d28e55f4 100644
--- a/drivers/gles2/rasterizer_scene_gles2.h
+++ b/drivers/gles2/rasterizer_scene_gles2.h
@@ -27,6 +27,7 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef RASTERIZERSCENEGLES2_H
 #define RASTERIZERSCENEGLES2_H
 
diff --git a/drivers/gles2/rasterizer_storage_gles2.cpp b/drivers/gles2/rasterizer_storage_gles2.cpp
index 5b5ab987d1..090882a723 100644
--- a/drivers/gles2/rasterizer_storage_gles2.cpp
+++ b/drivers/gles2/rasterizer_storage_gles2.cpp
@@ -27,14 +27,13 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #include "rasterizer_storage_gles2.h"
 
-#include "project_settings.h"
+#include "core/math/transform.h"
+#include "core/project_settings.h"
 #include "rasterizer_canvas_gles2.h"
 #include "rasterizer_scene_gles2.h"
-
-#include "math/transform.h"
-
 #include "servers/visual/shader_language.h"
 
 GLuint RasterizerStorageGLES2::system_fbo = 0;
diff --git a/drivers/gles2/rasterizer_storage_gles2.h b/drivers/gles2/rasterizer_storage_gles2.h
index 88783d7160..e42eb67d3d 100644
--- a/drivers/gles2/rasterizer_storage_gles2.h
+++ b/drivers/gles2/rasterizer_storage_gles2.h
@@ -27,11 +27,12 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef RASTERIZERSTORAGEGLES2_H
 #define RASTERIZERSTORAGEGLES2_H
 
-#include "dvector.h"
-#include "self_list.h"
+#include "core/dvector.h"
+#include "core/self_list.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual/shader_language.h"
 #include "shader_compiler_gles2.h"
diff --git a/drivers/gles2/shader_compiler_gles2.cpp b/drivers/gles2/shader_compiler_gles2.cpp
index 1c87b3ffb5..83b61dc288 100644
--- a/drivers/gles2/shader_compiler_gles2.cpp
+++ b/drivers/gles2/shader_compiler_gles2.cpp
@@ -27,11 +27,12 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #include "shader_compiler_gles2.h"
 
-#include "os/os.h"
-#include "string_buffer.h"
-#include "string_builder.h"
+#include "core/os/os.h"
+#include "core/string_buffer.h"
+#include "core/string_builder.h"
 
 #define SL ShaderLanguage
 
diff --git a/drivers/gles2/shader_compiler_gles2.h b/drivers/gles2/shader_compiler_gles2.h
index 804ead2172..5e9e295204 100644
--- a/drivers/gles2/shader_compiler_gles2.h
+++ b/drivers/gles2/shader_compiler_gles2.h
@@ -27,16 +27,16 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef SHADERCOMPILERGLES2_H
 #define SHADERCOMPILERGLES2_H
 
-#include "pair.h"
+#include "core/pair.h"
+#include "core/string_builder.h"
 #include "servers/visual/shader_language.h"
 #include "servers/visual/shader_types.h"
 #include "servers/visual_server.h"
 
-#include "string_builder.h"
-
 class ShaderCompilerGLES2 {
 public:
 	struct IdentifierActions {
diff --git a/drivers/gles2/shader_gles2.cpp b/drivers/gles2/shader_gles2.cpp
index 3b2a29d3ee..5a50ce8ae5 100644
--- a/drivers/gles2/shader_gles2.cpp
+++ b/drivers/gles2/shader_gles2.cpp
@@ -27,12 +27,12 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
-#include "shader_gles2.h"
 
-#include "memory.h"
-#include "print_string.h"
-#include "string_builder.h"
+#include "shader_gles2.h"
 
+#include "core/os/memory.h"
+#include "core/print_string.h"
+#include "core/string_builder.h"
 #include "rasterizer_gles2.h"
 #include "rasterizer_storage_gles2.h"
 
diff --git a/drivers/gles2/shader_gles2.h b/drivers/gles2/shader_gles2.h
index cb515c199c..8e274b4f57 100644
--- a/drivers/gles2/shader_gles2.h
+++ b/drivers/gles2/shader_gles2.h
@@ -27,11 +27,11 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+
 #ifndef SHADER_GLES2_H
 #define SHADER_GLES2_H
 
-#include <stdio.h>
-
+// This must come first to avoid windows.h mess
 #include "platform_config.h"
 #ifndef GLES2_INCLUDE_H
 #include <GLES2/gl2.h>
@@ -39,14 +39,15 @@
 #include GLES2_INCLUDE_H
 #endif
 
-#include "camera_matrix.h"
-#include "hash_map.h"
-#include "map.h"
-#include "variant.h"
-
+#include "core/hash_map.h"
+#include "core/map.h"
+#include "core/math/camera_matrix.h"
 #include "core/pair.h"
+#include "core/variant.h"
 #include "servers/visual/shader_language.h"
 
+#include <stdio.h>
+
 class RasterizerStorageGLES2;
 
 class ShaderGLES2 {
diff --git a/drivers/gles3/rasterizer_canvas_gles3.cpp b/drivers/gles3/rasterizer_canvas_gles3.cpp
index 33e9e5f772..c9bdc6f5c3 100644
--- a/drivers/gles3/rasterizer_canvas_gles3.cpp
+++ b/drivers/gles3/rasterizer_canvas_gles3.cpp
@@ -29,10 +29,12 @@
 /*************************************************************************/
 
 #include "rasterizer_canvas_gles3.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "rasterizer_scene_gles3.h"
 #include "servers/visual/visual_server_raster.h"
+
 #ifndef GLES_OVER_GL
 #define glClearDepth glClearDepthf
 #endif
diff --git a/drivers/gles3/rasterizer_canvas_gles3.h b/drivers/gles3/rasterizer_canvas_gles3.h
index c7f2e54efb..bc4ea80328 100644
--- a/drivers/gles3/rasterizer_canvas_gles3.h
+++ b/drivers/gles3/rasterizer_canvas_gles3.h
@@ -33,6 +33,7 @@
 
 #include "rasterizer_storage_gles3.h"
 #include "servers/visual/rasterizer.h"
+
 #include "shaders/canvas_shadow.glsl.gen.h"
 
 class RasterizerSceneGLES3;
diff --git a/drivers/gles3/rasterizer_gles3.cpp b/drivers/gles3/rasterizer_gles3.cpp
index e4824695d5..d3f6dcd497 100644
--- a/drivers/gles3/rasterizer_gles3.cpp
+++ b/drivers/gles3/rasterizer_gles3.cpp
@@ -30,11 +30,9 @@
 
 #include "rasterizer_gles3.h"
 
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "gl_context/context_gl.h"
-#include "os/os.h"
-#include "project_settings.h"
-
-#include <string.h>
 
 RasterizerStorage *RasterizerGLES3::get_storage() {
 
diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index 88f14890ef..947729f6f6 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "rasterizer_scene_gles3.h"
-#include "math_funcs.h"
-#include "os/os.h"
-#include "project_settings.h"
+
+#include "core/math/math_funcs.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "rasterizer_canvas_gles3.h"
 #include "servers/visual/visual_server_raster.h"
 
diff --git a/drivers/gles3/rasterizer_storage_gles3.cpp b/drivers/gles3/rasterizer_storage_gles3.cpp
index 83f731f610..c05f4cfbe3 100644
--- a/drivers/gles3/rasterizer_storage_gles3.cpp
+++ b/drivers/gles3/rasterizer_storage_gles3.cpp
@@ -29,8 +29,9 @@
 /*************************************************************************/
 
 #include "rasterizer_storage_gles3.h"
-#include "engine.h"
-#include "project_settings.h"
+
+#include "core/engine.h"
+#include "core/project_settings.h"
 #include "rasterizer_canvas_gles3.h"
 #include "rasterizer_scene_gles3.h"
 
diff --git a/drivers/gles3/rasterizer_storage_gles3.h b/drivers/gles3/rasterizer_storage_gles3.h
index b74dd77e26..33f0853d60 100644
--- a/drivers/gles3/rasterizer_storage_gles3.h
+++ b/drivers/gles3/rasterizer_storage_gles3.h
@@ -31,11 +31,12 @@
 #ifndef RASTERIZERSTORAGEGLES3_H
 #define RASTERIZERSTORAGEGLES3_H
 
-#include "self_list.h"
+#include "core/self_list.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual/shader_language.h"
 #include "shader_compiler_gles3.h"
 #include "shader_gles3.h"
+
 #include "shaders/blend_shape.glsl.gen.h"
 #include "shaders/canvas.glsl.gen.h"
 #include "shaders/copy.glsl.gen.h"
diff --git a/drivers/gles3/shader_compiler_gles3.cpp b/drivers/gles3/shader_compiler_gles3.cpp
index a78a392cbd..11c84e7db8 100644
--- a/drivers/gles3/shader_compiler_gles3.cpp
+++ b/drivers/gles3/shader_compiler_gles3.cpp
@@ -30,7 +30,7 @@
 
 #include "shader_compiler_gles3.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 #define SL ShaderLanguage
 
diff --git a/drivers/gles3/shader_compiler_gles3.h b/drivers/gles3/shader_compiler_gles3.h
index 7a32057741..1f903b8935 100644
--- a/drivers/gles3/shader_compiler_gles3.h
+++ b/drivers/gles3/shader_compiler_gles3.h
@@ -31,7 +31,7 @@
 #ifndef SHADERCOMPILERGLES3_H
 #define SHADERCOMPILERGLES3_H
 
-#include "pair.h"
+#include "core/pair.h"
 #include "servers/visual/shader_language.h"
 #include "servers/visual/shader_types.h"
 #include "servers/visual_server.h"
diff --git a/drivers/gles3/shader_gles3.cpp b/drivers/gles3/shader_gles3.cpp
index 007600bb42..2a3b8a9b91 100644
--- a/drivers/gles3/shader_gles3.cpp
+++ b/drivers/gles3/shader_gles3.cpp
@@ -30,7 +30,7 @@
 
 #include "shader_gles3.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 
 //#define DEBUG_OPENGL
 
diff --git a/drivers/gles3/shader_gles3.h b/drivers/gles3/shader_gles3.h
index 996655615e..ca74317218 100644
--- a/drivers/gles3/shader_gles3.h
+++ b/drivers/gles3/shader_gles3.h
@@ -31,7 +31,10 @@
 #ifndef SHADER_GLES3_H
 #define SHADER_GLES3_H
 
-#include <stdio.h>
+#include "core/hash_map.h"
+#include "core/map.h"
+#include "core/math/camera_matrix.h"
+#include "core/variant.h"
 
 #include "platform_config.h"
 #ifndef GLES3_INCLUDE_H
@@ -40,10 +43,7 @@
 #include GLES3_INCLUDE_H
 #endif
 
-#include "camera_matrix.h"
-#include "hash_map.h"
-#include "map.h"
-#include "variant.h"
+#include <stdio.h>
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/drivers/png/image_loader_png.cpp b/drivers/png/image_loader_png.cpp
index b08688892e..04acb9387e 100644
--- a/drivers/png/image_loader_png.cpp
+++ b/drivers/png/image_loader_png.cpp
@@ -30,8 +30,8 @@
 
 #include "image_loader_png.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 #include <string.h>
 
diff --git a/drivers/png/image_loader_png.h b/drivers/png/image_loader_png.h
index 48f48e6bea..5dff7e3902 100644
--- a/drivers/png/image_loader_png.h
+++ b/drivers/png/image_loader_png.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_PNG_H
 #define IMAGE_LOADER_PNG_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 #include <png.h>
 
diff --git a/drivers/png/resource_saver_png.cpp b/drivers/png/resource_saver_png.cpp
index 270ae36e1e..c5729f70b2 100644
--- a/drivers/png/resource_saver_png.cpp
+++ b/drivers/png/resource_saver_png.cpp
@@ -31,8 +31,8 @@
 #include "resource_saver_png.h"
 
 #include "core/image.h"
-#include "os/file_access.h"
-#include "project_settings.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
 #include "scene/resources/texture.h"
 
 #include <png.h>
diff --git a/drivers/png/resource_saver_png.h b/drivers/png/resource_saver_png.h
index 109b4801da..34950f6723 100644
--- a/drivers/png/resource_saver_png.h
+++ b/drivers/png/resource_saver_png.h
@@ -31,8 +31,8 @@
 #ifndef RESOURCE_SAVER_PNG_H
 #define RESOURCE_SAVER_PNG_H
 
-#include "image.h"
-#include "io/resource_saver.h"
+#include "core/image.h"
+#include "core/io/resource_saver.h"
 
 class ResourceSaverPNG : public ResourceFormatSaver {
 public:
diff --git a/drivers/pulseaudio/audio_driver_pulseaudio.cpp b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
index 744b3a35e6..7578fbc0a0 100644
--- a/drivers/pulseaudio/audio_driver_pulseaudio.cpp
+++ b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
@@ -32,10 +32,8 @@
 
 #ifdef PULSEAUDIO_ENABLED
 
-#include <pulse/pulseaudio.h>
-
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 void AudioDriverPulseAudio::pa_state_cb(pa_context *c, void *userdata) {
 	AudioDriverPulseAudio *ad = (AudioDriverPulseAudio *)userdata;
diff --git a/drivers/rtaudio/audio_driver_rtaudio.cpp b/drivers/rtaudio/audio_driver_rtaudio.cpp
index 69830b542b..10ba0663f2 100644
--- a/drivers/rtaudio/audio_driver_rtaudio.cpp
+++ b/drivers/rtaudio/audio_driver_rtaudio.cpp
@@ -30,8 +30,8 @@
 
 #include "audio_driver_rtaudio.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #ifdef RTAUDIO_ENABLED
 
diff --git a/drivers/unix/dir_access_unix.cpp b/drivers/unix/dir_access_unix.cpp
index 5a4be6df4f..81861f8c7b 100644
--- a/drivers/unix/dir_access_unix.cpp
+++ b/drivers/unix/dir_access_unix.cpp
@@ -32,18 +32,19 @@
 
 #if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
 
-#ifndef ANDROID_ENABLED
-#include <sys/statvfs.h>
-#endif
-
 #include "core/list.h"
-#include "os/memory.h"
-#include "print_string.h"
+#include "core/os/memory.h"
+#include "core/print_string.h"
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#ifndef ANDROID_ENABLED
+#include <sys/statvfs.h>
+#endif
+
 #ifdef HAVE_MNTENT
 #include <mntent.h>
 #endif
diff --git a/drivers/unix/dir_access_unix.h b/drivers/unix/dir_access_unix.h
index a55acdbd34..26978930bd 100644
--- a/drivers/unix/dir_access_unix.h
+++ b/drivers/unix/dir_access_unix.h
@@ -33,16 +33,17 @@
 
 #if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
 
+#include "core/os/dir_access.h"
+
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
-#include "os/dir_access.h"
-
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class DirAccessUnix : public DirAccess {
 
 	DIR *dir_stream;
diff --git a/drivers/unix/file_access_unix.cpp b/drivers/unix/file_access_unix.cpp
index ca16c6fcae..3b97b95f7c 100644
--- a/drivers/unix/file_access_unix.cpp
+++ b/drivers/unix/file_access_unix.cpp
@@ -33,7 +33,8 @@
 #if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
 
 #include "core/os/os.h"
-#include "print_string.h"
+#include "core/print_string.h"
+
 #include <sys/stat.h>
 #include <sys/types.h>
 
diff --git a/drivers/unix/file_access_unix.h b/drivers/unix/file_access_unix.h
index 88bb39fbd1..d4a4f8230c 100644
--- a/drivers/unix/file_access_unix.h
+++ b/drivers/unix/file_access_unix.h
@@ -31,8 +31,9 @@
 #ifndef FILE_ACCESS_UNIX_H
 #define FILE_ACCESS_UNIX_H
 
-#include "os/file_access.h"
-#include "os/memory.h"
+#include "core/os/file_access.h"
+#include "core/os/memory.h"
+
 #include <stdio.h>
 
 #if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
diff --git a/drivers/unix/ip_unix.h b/drivers/unix/ip_unix.h
index d3d1ccfa85..83535045b1 100644
--- a/drivers/unix/ip_unix.h
+++ b/drivers/unix/ip_unix.h
@@ -31,7 +31,7 @@
 #ifndef IP_UNIX_H
 #define IP_UNIX_H
 
-#include "io/ip.h"
+#include "core/io/ip.h"
 
 #if defined(UNIX_ENABLED) || defined(WINDOWS_ENABLED)
 
diff --git a/drivers/unix/mutex_posix.cpp b/drivers/unix/mutex_posix.cpp
index 1f13720f1e..e0004c5730 100644
--- a/drivers/unix/mutex_posix.cpp
+++ b/drivers/unix/mutex_posix.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "mutex_posix.h"
-#include "os/memory.h"
+
+#include "core/os/memory.h"
 
 #if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
 
diff --git a/drivers/unix/mutex_posix.h b/drivers/unix/mutex_posix.h
index a4de1603f3..80d85eee61 100644
--- a/drivers/unix/mutex_posix.h
+++ b/drivers/unix/mutex_posix.h
@@ -33,7 +33,8 @@
 
 #if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
 
-#include "os/mutex.h"
+#include "core/os/mutex.h"
+
 #include <pthread.h>
 
 class MutexPosix : public Mutex {
diff --git a/drivers/unix/os_unix.cpp b/drivers/unix/os_unix.cpp
index 05dfd69f58..6dba6923c3 100644
--- a/drivers/unix/os_unix.cpp
+++ b/drivers/unix/os_unix.cpp
@@ -32,20 +32,18 @@
 
 #ifdef UNIX_ENABLED
 
-#include "servers/visual_server.h"
-
 #include "core/os/thread_dummy.h"
-#include "mutex_posix.h"
-#include "rw_lock_posix.h"
-#include "semaphore_posix.h"
-#include "thread_posix.h"
-
-//#include "core/io/file_access_buffered_fa.h"
-#include "dir_access_unix.h"
-#include "file_access_unix.h"
-#include "packet_peer_udp_posix.h"
-#include "stream_peer_tcp_posix.h"
-#include "tcp_server_posix.h"
+#include "core/project_settings.h"
+#include "drivers/unix/dir_access_unix.h"
+#include "drivers/unix/file_access_unix.h"
+#include "drivers/unix/mutex_posix.h"
+#include "drivers/unix/packet_peer_udp_posix.h"
+#include "drivers/unix/rw_lock_posix.h"
+#include "drivers/unix/semaphore_posix.h"
+#include "drivers/unix/stream_peer_tcp_posix.h"
+#include "drivers/unix/tcp_server_posix.h"
+#include "drivers/unix/thread_posix.h"
+#include "servers/visual_server.h"
 
 #ifdef __APPLE__
 #include <mach-o/dyld.h>
@@ -55,7 +53,7 @@
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #endif
-#include "project_settings.h"
+
 #include <assert.h>
 #include <dlfcn.h>
 #include <errno.h>
diff --git a/drivers/unix/os_unix.h b/drivers/unix/os_unix.h
index 95b74d23ff..f4abfa2dd4 100644
--- a/drivers/unix/os_unix.h
+++ b/drivers/unix/os_unix.h
@@ -37,8 +37,8 @@
 
 #ifdef UNIX_ENABLED
 
+#include "core/os/os.h"
 #include "drivers/unix/ip_unix.h"
-#include "os/os.h"
 
 class OS_Unix : public OS {
 
diff --git a/drivers/unix/packet_peer_udp_posix.h b/drivers/unix/packet_peer_udp_posix.h
index 7f72a9bfc9..d366d88b77 100644
--- a/drivers/unix/packet_peer_udp_posix.h
+++ b/drivers/unix/packet_peer_udp_posix.h
@@ -33,8 +33,8 @@
 
 #ifdef UNIX_ENABLED
 
-#include "io/packet_peer_udp.h"
-#include "ring_buffer.h"
+#include "core/io/packet_peer_udp.h"
+#include "core/ring_buffer.h"
 
 class PacketPeerUDPPosix : public PacketPeerUDP {
 
diff --git a/drivers/unix/rw_lock_posix.cpp b/drivers/unix/rw_lock_posix.cpp
index 4df965cabb..27b19c30d5 100644
--- a/drivers/unix/rw_lock_posix.cpp
+++ b/drivers/unix/rw_lock_posix.cpp
@@ -32,8 +32,8 @@
 
 #include "rw_lock_posix.h"
 
-#include "error_macros.h"
-#include "os/memory.h"
+#include "core/error_macros.h"
+#include "core/os/memory.h"
 #include <stdio.h>
 
 void RWLockPosix::read_lock() {
diff --git a/drivers/unix/rw_lock_posix.h b/drivers/unix/rw_lock_posix.h
index 617b9705da..897b617f98 100644
--- a/drivers/unix/rw_lock_posix.h
+++ b/drivers/unix/rw_lock_posix.h
@@ -33,7 +33,7 @@
 
 #if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
 
-#include "os/rw_lock.h"
+#include "core/os/rw_lock.h"
 #include <pthread.h>
 
 class RWLockPosix : public RWLock {
diff --git a/drivers/unix/semaphore_posix.cpp b/drivers/unix/semaphore_posix.cpp
index 5cabfe4937..26c2aeab28 100644
--- a/drivers/unix/semaphore_posix.cpp
+++ b/drivers/unix/semaphore_posix.cpp
@@ -32,7 +32,7 @@
 
 #if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 #include <errno.h>
 #include <stdio.h>
 
diff --git a/drivers/unix/semaphore_posix.h b/drivers/unix/semaphore_posix.h
index 283174bb2e..025b87c0d7 100644
--- a/drivers/unix/semaphore_posix.h
+++ b/drivers/unix/semaphore_posix.h
@@ -31,7 +31,7 @@
 #ifndef SEMAPHORE_POSIX_H
 #define SEMAPHORE_POSIX_H
 
-#include "os/semaphore.h"
+#include "core/os/semaphore.h"
 
 #if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
 
diff --git a/drivers/unix/stream_peer_tcp_posix.h b/drivers/unix/stream_peer_tcp_posix.h
index bcebe57771..05c48432db 100644
--- a/drivers/unix/stream_peer_tcp_posix.h
+++ b/drivers/unix/stream_peer_tcp_posix.h
@@ -33,9 +33,9 @@
 #ifndef STREAM_PEER_TCP_POSIX_H
 #define STREAM_PEER_TCP_POSIX_H
 
+#include "core/error_list.h"
 #include "core/io/ip_address.h"
 #include "core/io/stream_peer_tcp.h"
-#include "error_list.h"
 
 class StreamPeerTCPPosix : public StreamPeerTCP {
 
diff --git a/drivers/unix/syslog_logger.cpp b/drivers/unix/syslog_logger.cpp
index 727672458c..c7b4daf4ad 100644
--- a/drivers/unix/syslog_logger.cpp
+++ b/drivers/unix/syslog_logger.cpp
@@ -31,7 +31,7 @@
 #ifdef UNIX_ENABLED
 
 #include "syslog_logger.h"
-#include "print_string.h"
+#include "core/print_string.h"
 #include <syslog.h>
 
 void SyslogLogger::logv(const char *p_format, va_list p_list, bool p_err) {
diff --git a/drivers/unix/syslog_logger.h b/drivers/unix/syslog_logger.h
index 40bf26cee1..745264ab6f 100644
--- a/drivers/unix/syslog_logger.h
+++ b/drivers/unix/syslog_logger.h
@@ -33,7 +33,7 @@
 
 #ifdef UNIX_ENABLED
 
-#include "io/logger.h"
+#include "core/io/logger.h"
 
 class SyslogLogger : public Logger {
 public:
@@ -45,4 +45,4 @@ public:
 
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/drivers/unix/thread_posix.cpp b/drivers/unix/thread_posix.cpp
index a73b40a6f2..fcefe0a3b3 100644
--- a/drivers/unix/thread_posix.cpp
+++ b/drivers/unix/thread_posix.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "thread_posix.h"
-#include "script_language.h"
+#include "core/script_language.h"
 
 #if (defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)) && !defined(NO_THREADS)
 
@@ -37,8 +37,8 @@
 #include <pthread_np.h>
 #endif
 
+#include "core/os/memory.h"
 #include "core/safe_refcount.h"
-#include "os/memory.h"
 
 static pthread_key_t _create_thread_id_key() {
 	pthread_key_t key;
diff --git a/drivers/unix/thread_posix.h b/drivers/unix/thread_posix.h
index ea2de61bd5..20d103232e 100644
--- a/drivers/unix/thread_posix.h
+++ b/drivers/unix/thread_posix.h
@@ -37,7 +37,7 @@
 
 #if (defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)) && !defined(NO_THREADS)
 
-#include "os/thread.h"
+#include "core/os/thread.h"
 #include <pthread.h>
 #include <sys/types.h>
 
diff --git a/drivers/wasapi/audio_driver_wasapi.cpp b/drivers/wasapi/audio_driver_wasapi.cpp
index 43577a090f..3d4979175b 100644
--- a/drivers/wasapi/audio_driver_wasapi.cpp
+++ b/drivers/wasapi/audio_driver_wasapi.cpp
@@ -32,8 +32,8 @@
 
 #include "audio_driver_wasapi.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include <functiondiscoverykeys.h>
 
diff --git a/drivers/windows/dir_access_windows.cpp b/drivers/windows/dir_access_windows.cpp
index cf4d82fb07..589e9e0870 100644
--- a/drivers/windows/dir_access_windows.cpp
+++ b/drivers/windows/dir_access_windows.cpp
@@ -32,9 +32,9 @@
 
 #include "dir_access_windows.h"
 
-#include "os/memory.h"
+#include "core/os/memory.h"
+#include "core/print_string.h"
 
-#include "print_string.h"
 #include <stdio.h>
 #include <wchar.h>
 #include <windows.h>
diff --git a/drivers/windows/dir_access_windows.h b/drivers/windows/dir_access_windows.h
index b18c8f5b5d..9f5d0b6d93 100644
--- a/drivers/windows/dir_access_windows.h
+++ b/drivers/windows/dir_access_windows.h
@@ -33,7 +33,7 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "os/dir_access.h"
+#include "core/os/dir_access.h"
 
 /**
 	@author Juan Linietsky <reduz@gmail.com>
diff --git a/drivers/windows/file_access_windows.h b/drivers/windows/file_access_windows.h
index 0462c1e942..6f985e68b4 100644
--- a/drivers/windows/file_access_windows.h
+++ b/drivers/windows/file_access_windows.h
@@ -33,13 +33,15 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "os/file_access.h"
-#include "os/memory.h"
+#include "core/os/file_access.h"
+#include "core/os/memory.h"
+
 #include <stdio.h>
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class FileAccessWindows : public FileAccess {
 
 	FILE *f;
diff --git a/drivers/windows/mutex_windows.cpp b/drivers/windows/mutex_windows.cpp
index 359a79209c..9fc6485be3 100644
--- a/drivers/windows/mutex_windows.cpp
+++ b/drivers/windows/mutex_windows.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "mutex_windows.h"
-#include "os/memory.h"
+
+#include "core/os/memory.h"
 
 #ifdef WINDOWS_ENABLED
 
diff --git a/drivers/windows/mutex_windows.h b/drivers/windows/mutex_windows.h
index 4dff2c2456..5c3a8eb331 100644
--- a/drivers/windows/mutex_windows.h
+++ b/drivers/windows/mutex_windows.h
@@ -33,11 +33,14 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "os/mutex.h"
+#include "core/os/mutex.h"
+
 #include <windows.h>
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class MutexWindows : public Mutex {
 
 #ifdef WINDOWS_USE_MUTEX
diff --git a/drivers/windows/packet_peer_udp_winsock.cpp b/drivers/windows/packet_peer_udp_winsock.cpp
index 609096d02e..66221774b2 100644
--- a/drivers/windows/packet_peer_udp_winsock.cpp
+++ b/drivers/windows/packet_peer_udp_winsock.cpp
@@ -35,6 +35,7 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 
+// Must be included after Windows headers or hell breaks loose
 #include "drivers/unix/socket_helpers.h"
 
 int PacketPeerUDPWinsock::get_available_packet_count() const {
diff --git a/drivers/windows/packet_peer_udp_winsock.h b/drivers/windows/packet_peer_udp_winsock.h
index 8d575c2033..91087af7cb 100644
--- a/drivers/windows/packet_peer_udp_winsock.h
+++ b/drivers/windows/packet_peer_udp_winsock.h
@@ -33,8 +33,8 @@
 #ifndef PACKET_PEER_UDP_WINSOCK_H
 #define PACKET_PEER_UDP_WINSOCK_H
 
-#include "io/packet_peer_udp.h"
-#include "ring_buffer.h"
+#include "core/io/packet_peer_udp.h"
+#include "core/ring_buffer.h"
 
 class PacketPeerUDPWinsock : public PacketPeerUDP {
 
diff --git a/drivers/windows/rw_lock_windows.cpp b/drivers/windows/rw_lock_windows.cpp
index 29c24d3d02..ef00141928 100644
--- a/drivers/windows/rw_lock_windows.cpp
+++ b/drivers/windows/rw_lock_windows.cpp
@@ -32,8 +32,9 @@
 
 #include "rw_lock_windows.h"
 
-#include "error_macros.h"
-#include "os/memory.h"
+#include "core/error_macros.h"
+#include "core/os/memory.h"
+
 #include <stdio.h>
 
 void RWLockWindows::read_lock() {
diff --git a/drivers/windows/rw_lock_windows.h b/drivers/windows/rw_lock_windows.h
index fdce28574a..742a0930d4 100644
--- a/drivers/windows/rw_lock_windows.h
+++ b/drivers/windows/rw_lock_windows.h
@@ -33,7 +33,8 @@
 
 #if defined(WINDOWS_ENABLED)
 
-#include "os/rw_lock.h"
+#include "core/os/rw_lock.h"
+
 #include <windows.h>
 
 class RWLockWindows : public RWLock {
diff --git a/drivers/windows/semaphore_windows.cpp b/drivers/windows/semaphore_windows.cpp
index 25fced93ce..34dd387705 100644
--- a/drivers/windows/semaphore_windows.cpp
+++ b/drivers/windows/semaphore_windows.cpp
@@ -32,7 +32,7 @@
 
 #if defined(WINDOWS_ENABLED)
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 
 Error SemaphoreWindows::wait() {
 
diff --git a/drivers/windows/semaphore_windows.h b/drivers/windows/semaphore_windows.h
index e099ee437a..1e2f9c152e 100644
--- a/drivers/windows/semaphore_windows.h
+++ b/drivers/windows/semaphore_windows.h
@@ -31,14 +31,16 @@
 #ifndef SEMAPHORE_WINDOWS_H
 #define SEMAPHORE_WINDOWS_H
 
-#include "os/semaphore.h"
+#include "core/os/semaphore.h"
 
 #ifdef WINDOWS_ENABLED
 
 #include <windows.h>
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class SemaphoreWindows : public Semaphore {
 
 	mutable HANDLE semaphore;
diff --git a/drivers/windows/shell_windows.h b/drivers/windows/shell_windows.h
index 41cc6b72a2..98972a9bb1 100644
--- a/drivers/windows/shell_windows.h
+++ b/drivers/windows/shell_windows.h
@@ -31,12 +31,14 @@
 #ifndef SHELL_WINDOWS_H
 #define SHELL_WINDOWS_H
 
-#include "os/shell.h"
+#include "core/os/shell.h"
 
 #ifdef WINDOWS_ENABLED
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
+
 class ShellWindows : public Shell {
 public:
 	virtual void execute(String p_path);
diff --git a/drivers/windows/stream_peer_tcp_winsock.h b/drivers/windows/stream_peer_tcp_winsock.h
index a0177d374e..4a50e2f678 100644
--- a/drivers/windows/stream_peer_tcp_winsock.h
+++ b/drivers/windows/stream_peer_tcp_winsock.h
@@ -33,7 +33,7 @@
 #ifndef STREAM_PEER_TCP_WINSOCK_H
 #define STREAM_PEER_TCP_WINSOCK_H
 
-#include "error_list.h"
+#include "core/error_list.h"
 
 #include "core/io/ip_address.h"
 #include "core/io/stream_peer_tcp.h"
diff --git a/drivers/windows/thread_windows.cpp b/drivers/windows/thread_windows.cpp
index 5e0b017a5c..52dcfacdf8 100644
--- a/drivers/windows/thread_windows.cpp
+++ b/drivers/windows/thread_windows.cpp
@@ -32,7 +32,7 @@
 
 #if defined(WINDOWS_ENABLED) && !defined(UWP_ENABLED)
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 
 Thread::ID ThreadWindows::get_id() const {
 
diff --git a/drivers/windows/thread_windows.h b/drivers/windows/thread_windows.h
index d7a8389d9e..5d2838e54f 100644
--- a/drivers/windows/thread_windows.h
+++ b/drivers/windows/thread_windows.h
@@ -31,16 +31,17 @@
 #ifndef THREAD_WINDOWS_H
 #define THREAD_WINDOWS_H
 
-/**
-	@author Juan Linietsky <reduzio@gmail.com>
-*/
-
 #ifdef WINDOWS_ENABLED
 
-#include "os/thread.h"
-#include "script_language.h"
+#include "core/os/thread.h"
+#include "core/script_language.h"
+
 #include <windows.h>
 
+/**
+	@author Juan Linietsky <reduzio@gmail.com>
+*/
+
 class ThreadWindows : public Thread {
 
 	ThreadCreateCallback callback;
diff --git a/drivers/winmidi/win_midi.cpp b/drivers/winmidi/win_midi.cpp
index 63f7f13685..1d4bf1a1e2 100644
--- a/drivers/winmidi/win_midi.cpp
+++ b/drivers/winmidi/win_midi.cpp
@@ -31,7 +31,8 @@
 #ifdef WINMIDI_ENABLED
 
 #include "win_midi.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
 
 void MIDIDriverWinMidi::read(HMIDIIN hMidiIn, UINT wMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2) {
 
diff --git a/drivers/winmidi/win_midi.h b/drivers/winmidi/win_midi.h
index 1cf9b19b5d..87a349d5d1 100644
--- a/drivers/winmidi/win_midi.h
+++ b/drivers/winmidi/win_midi.h
@@ -33,14 +33,14 @@
 #ifndef WIN_MIDI_H
 #define WIN_MIDI_H
 
+#include "core/os/midi_driver.h"
+#include "core/vector.h"
+
 #include <stdio.h>
 #include <windows.h>
 
 #include <mmsystem.h>
 
-#include "core/vector.h"
-#include "os/midi_driver.h"
-
 class MIDIDriverWinMidi : public MIDIDriver {
 
 	Vector<HMIDIIN> connected_sources;
diff --git a/drivers/xaudio2/audio_driver_xaudio2.cpp b/drivers/xaudio2/audio_driver_xaudio2.cpp
index a1002ef4f9..452a1105ca 100644
--- a/drivers/xaudio2/audio_driver_xaudio2.cpp
+++ b/drivers/xaudio2/audio_driver_xaudio2.cpp
@@ -30,8 +30,8 @@
 
 #include "audio_driver_xaudio2.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 const char *AudioDriverXAudio2::get_name() const {
 	return "XAudio2";
diff --git a/editor/animation_track_editor.cpp b/editor/animation_track_editor.cpp
index 4c4830ad7a..ac28fb9b99 100644
--- a/editor/animation_track_editor.cpp
+++ b/editor/animation_track_editor.cpp
@@ -30,11 +30,11 @@
 
 #include "animation_track_editor.h"
 #include "animation_track_editor_plugins.h"
+#include "core/os/keyboard.h"
 #include "editor/animation_bezier_editor.h"
 #include "editor/plugins/animation_player_editor_plugin.h"
 #include "editor_node.h"
 #include "editor_scale.h"
-#include "os/keyboard.h"
 #include "scene/main/viewport.h"
 #include "servers/audio/audio_stream.h"
 
diff --git a/editor/audio_stream_preview.h b/editor/audio_stream_preview.h
index a014f2f571..1a8f2eaa15 100644
--- a/editor/audio_stream_preview.h
+++ b/editor/audio_stream_preview.h
@@ -31,7 +31,7 @@
 #ifndef AUDIO_STREAM_PREVIEW_H
 #define AUDIO_STREAM_PREVIEW_H
 
-#include "os/thread.h"
+#include "core/os/thread.h"
 #include "scene/main/node.h"
 #include "servers/audio/audio_stream.h"
 
diff --git a/editor/code_editor.cpp b/editor/code_editor.cpp
index 2fecf24d7d..80bc73bc12 100644
--- a/editor/code_editor.cpp
+++ b/editor/code_editor.cpp
@@ -30,10 +30,10 @@
 
 #include "code_editor.h"
 
+#include "core/os/keyboard.h"
 #include "editor/editor_scale.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "os/keyboard.h"
 #include "scene/gui/margin_container.h"
 #include "scene/gui/separator.h"
 #include "scene/resources/dynamic_font.h"
diff --git a/editor/collada/collada.h b/editor/collada/collada.h
index 7535162f74..b777fa04c2 100644
--- a/editor/collada/collada.h
+++ b/editor/collada/collada.h
@@ -33,9 +33,9 @@
 #ifndef COLLADA_H
 #define COLLADA_H
 
-#include "io/xml_parser.h"
-#include "map.h"
-#include "project_settings.h"
+#include "core/io/xml_parser.h"
+#include "core/map.h"
+#include "core/project_settings.h"
 #include "scene/resources/material.h"
 
 class Collada {
diff --git a/editor/connections_dialog.cpp b/editor/connections_dialog.cpp
index 02c0e2daaa..18c4dd85a1 100644
--- a/editor/connections_dialog.cpp
+++ b/editor/connections_dialog.cpp
@@ -30,10 +30,10 @@
 
 #include "connections_dialog.h"
 
+#include "core/print_string.h"
 #include "editor_node.h"
 #include "editor_settings.h"
 #include "plugins/script_editor_plugin.h"
-#include "print_string.h"
 #include "scene/gui/label.h"
 #include "scene/gui/popup_menu.h"
 
diff --git a/editor/connections_dialog.h b/editor/connections_dialog.h
index 1f7ff87e24..c2fd1f1d09 100644
--- a/editor/connections_dialog.h
+++ b/editor/connections_dialog.h
@@ -35,6 +35,7 @@
 #ifndef CONNECTIONS_DIALOG_H
 #define CONNECTIONS_DIALOG_H
 
+#include "core/undo_redo.h"
 #include "editor/editor_inspector.h"
 #include "editor/scene_tree_editor.h"
 #include "scene/gui/button.h"
@@ -44,7 +45,6 @@
 #include "scene/gui/menu_button.h"
 #include "scene/gui/popup.h"
 #include "scene/gui/tree.h"
-#include "undo_redo.h"
 
 class PopupMenu;
 class ConnectDialogBinds;
diff --git a/editor/create_dialog.cpp b/editor/create_dialog.cpp
index 1853bf517b..8bef94d8a8 100644
--- a/editor/create_dialog.cpp
+++ b/editor/create_dialog.cpp
@@ -30,12 +30,12 @@
 
 #include "create_dialog.h"
 
-#include "class_db.h"
+#include "core/class_db.h"
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
 #include "editor_help.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "os/keyboard.h"
-#include "print_string.h"
 #include "scene/gui/box_container.h"
 
 void CreateDialog::popup_create(bool p_dont_clear, bool p_replace_mode) {
diff --git a/editor/dependency_editor.cpp b/editor/dependency_editor.cpp
index 62ae14c988..9f04d40763 100644
--- a/editor/dependency_editor.cpp
+++ b/editor/dependency_editor.cpp
@@ -30,9 +30,9 @@
 
 #include "dependency_editor.h"
 
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
 #include "editor_node.h"
-#include "io/resource_loader.h"
-#include "os/file_access.h"
 #include "scene/gui/margin_container.h"
 
 void DependencyEditor::_notification(int p_what) {
diff --git a/editor/doc/doc_data.cpp b/editor/doc/doc_data.cpp
index c90b2b14b3..599f46d6d9 100644
--- a/editor/doc/doc_data.cpp
+++ b/editor/doc/doc_data.cpp
@@ -30,15 +30,15 @@
 
 #include "doc_data.h"
 
-#include "engine.h"
-#include "global_constants.h"
-#include "io/compression.h"
-#include "io/marshalls.h"
-#include "os/dir_access.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/io/compression.h"
+#include "core/io/marshalls.h"
+#include "core/os/dir_access.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
+#include "core/version.h"
 #include "scene/resources/theme.h"
-#include "script_language.h"
-#include "version.h"
 
 void DocData::merge_from(const DocData &p_data) {
 
diff --git a/editor/doc/doc_data.h b/editor/doc/doc_data.h
index c7b70b5fb9..6633c123e6 100644
--- a/editor/doc/doc_data.h
+++ b/editor/doc/doc_data.h
@@ -31,9 +31,9 @@
 #ifndef DOC_DATA_H
 #define DOC_DATA_H
 
-#include "io/xml_parser.h"
-#include "map.h"
-#include "variant.h"
+#include "core/io/xml_parser.h"
+#include "core/map.h"
+#include "core/variant.h"
 
 class DocData {
 public:
diff --git a/editor/doc/doc_dump.cpp b/editor/doc/doc_dump.cpp
index 06d35c4d3a..86fd9b436b 100644
--- a/editor/doc/doc_dump.cpp
+++ b/editor/doc/doc_dump.cpp
@@ -30,9 +30,9 @@
 
 #include "doc_dump.h"
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
+#include "core/version.h"
 #include "scene/main/node.h"
-#include "version.h"
 
 static void _write_string(FileAccess *f, int p_tablevel, const String &p_string) {
 
diff --git a/editor/doc/doc_dump.h b/editor/doc/doc_dump.h
index 48cf1a587b..99398b5d96 100644
--- a/editor/doc/doc_dump.h
+++ b/editor/doc/doc_dump.h
@@ -31,7 +31,7 @@
 #ifndef DOC_DUMP_H
 #define DOC_DUMP_H
 
-#include "class_db.h"
+#include "core/class_db.h"
 
 class DocDump {
 public:
diff --git a/editor/editor_asset_installer.cpp b/editor/editor_asset_installer.cpp
index d99908a3c3..6af45f26ae 100644
--- a/editor/editor_asset_installer.cpp
+++ b/editor/editor_asset_installer.cpp
@@ -30,10 +30,10 @@
 
 #include "editor_asset_installer.h"
 
+#include "core/io/zip_io.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
 #include "editor_node.h"
-#include "io/zip_io.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
 
 void EditorAssetInstaller::_update_subitems(TreeItem *p_item, bool p_check, bool p_first) {
 
diff --git a/editor/editor_audio_buses.cpp b/editor/editor_audio_buses.cpp
index 9c775be87e..96110b61ab 100644
--- a/editor/editor_audio_buses.cpp
+++ b/editor/editor_audio_buses.cpp
@@ -30,10 +30,10 @@
 
 #include "editor_audio_buses.h"
 
+#include "core/io/resource_saver.h"
+#include "core/os/keyboard.h"
 #include "editor_node.h"
 #include "filesystem_dock.h"
-#include "io/resource_saver.h"
-#include "os/keyboard.h"
 #include "servers/audio_server.h"
 
 void EditorAudioBus::_notification(int p_what) {
diff --git a/editor/editor_autoload_settings.cpp b/editor/editor_autoload_settings.cpp
index d12c85861b..1374c8c9aa 100644
--- a/editor/editor_autoload_settings.cpp
+++ b/editor/editor_autoload_settings.cpp
@@ -30,9 +30,9 @@
 
 #include "editor_autoload_settings.h"
 
+#include "core/global_constants.h"
+#include "core/project_settings.h"
 #include "editor_node.h"
-#include "global_constants.h"
-#include "project_settings.h"
 #include "scene/main/viewport.h"
 #include "scene/resources/packed_scene.h"
 
diff --git a/editor/editor_data.cpp b/editor/editor_data.cpp
index 69c120bb3c..6187c6b318 100644
--- a/editor/editor_data.cpp
+++ b/editor/editor_data.cpp
@@ -30,12 +30,12 @@
 
 #include "editor_data.h"
 
+#include "core/io/resource_loader.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "io/resource_loader.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "project_settings.h"
 #include "scene/resources/packed_scene.h"
 
 void EditorHistory::cleanup_history() {
diff --git a/editor/editor_data.h b/editor/editor_data.h
index 285769aa78..9f5d3e2a15 100644
--- a/editor/editor_data.h
+++ b/editor/editor_data.h
@@ -31,12 +31,12 @@
 #ifndef EDITOR_DATA_H
 #define EDITOR_DATA_H
 
+#include "core/list.h"
+#include "core/pair.h"
+#include "core/undo_redo.h"
 #include "editor/editor_plugin.h"
 #include "editor/plugins/script_editor_plugin.h"
-#include "list.h"
-#include "pair.h"
 #include "scene/resources/texture.h"
-#include "undo_redo.h"
 
 class EditorHistory {
 
diff --git a/editor/editor_dir_dialog.cpp b/editor/editor_dir_dialog.cpp
index c094b2b559..6f80b6bea4 100644
--- a/editor/editor_dir_dialog.cpp
+++ b/editor/editor_dir_dialog.cpp
@@ -30,11 +30,11 @@
 
 #include "editor_dir_dialog.h"
 
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_settings.h"
 #include "editor_scale.h"
-#include "os/keyboard.h"
-#include "os/os.h"
 void EditorDirDialog::_update_dir(TreeItem *p_item, EditorFileSystemDirectory *p_dir, const String &p_select_path) {
 
 	updating = true;
diff --git a/editor/editor_dir_dialog.h b/editor/editor_dir_dialog.h
index 7c19e7de38..a9dc7accfe 100644
--- a/editor/editor_dir_dialog.h
+++ b/editor/editor_dir_dialog.h
@@ -31,8 +31,8 @@
 #ifndef EDITOR_DIR_DIALOG_H
 #define EDITOR_DIR_DIALOG_H
 
+#include "core/os/dir_access.h"
 #include "editor/editor_file_system.h"
-#include "os/dir_access.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/tree.h"
 
diff --git a/editor/editor_export.cpp b/editor/editor_export.cpp
index 441c09620e..455c889224 100644
--- a/editor/editor_export.cpp
+++ b/editor/editor_export.cpp
@@ -30,20 +30,20 @@
 
 #include "editor_export.h"
 
+#include "core/io/config_file.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/io/zip_io.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
+#include "core/version.h"
 #include "editor/editor_file_system.h"
 #include "editor/plugins/script_editor_plugin.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "io/config_file.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "io/zip_io.h"
-#include "os/file_access.h"
-#include "project_settings.h"
 #include "scene/resources/scene_format_text.h"
-#include "script_language.h"
 #include "thirdparty/misc/md5.h"
-#include "version.h"
 
 static int _get_pad(int p_alignment, int p_n) {
 
diff --git a/editor/editor_export.h b/editor/editor_export.h
index b984d66a1b..420f383f95 100644
--- a/editor/editor_export.h
+++ b/editor/editor_export.h
@@ -31,8 +31,8 @@
 #ifndef EDITOR_EXPORT_H
 #define EDITOR_EXPORT_H
 
-#include "os/dir_access.h"
-#include "resource.h"
+#include "core/os/dir_access.h"
+#include "core/resource.h"
 #include "scene/main/node.h"
 #include "scene/main/timer.h"
 #include "scene/resources/texture.h"
diff --git a/editor/editor_file_dialog.cpp b/editor/editor_file_dialog.cpp
index d240f4ed25..3659a06bb7 100644
--- a/editor/editor_file_dialog.cpp
+++ b/editor/editor_file_dialog.cpp
@@ -29,14 +29,14 @@
 /*************************************************************************/
 
 #include "editor_file_dialog.h"
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "dependency_editor.h"
 #include "editor_resource_preview.h"
 #include "editor_scale.h"
 #include "editor_settings.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
 #include "scene/gui/center_container.h"
 #include "scene/gui/label.h"
 #include "scene/gui/margin_container.h"
diff --git a/editor/editor_file_dialog.h b/editor/editor_file_dialog.h
index b1f8f1108c..61eeff9162 100644
--- a/editor/editor_file_dialog.h
+++ b/editor/editor_file_dialog.h
@@ -31,7 +31,7 @@
 #ifndef EDITORFILEDIALOG_H
 #define EDITORFILEDIALOG_H
 
-#include "os/dir_access.h"
+#include "core/os/dir_access.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/item_list.h"
diff --git a/editor/editor_file_system.cpp b/editor/editor_file_system.cpp
index 9562a8c63c..351ca6f435 100644
--- a/editor/editor_file_system.cpp
+++ b/editor/editor_file_system.cpp
@@ -30,16 +30,16 @@
 
 #include "editor_file_system.h"
 
+#include "core/io/resource_import.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/variant_parser.h"
 #include "editor_node.h"
 #include "editor_resource_preview.h"
 #include "editor_settings.h"
-#include "io/resource_import.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
-#include "variant_parser.h"
 
 EditorFileSystem *EditorFileSystem::singleton = NULL;
 
diff --git a/editor/editor_file_system.h b/editor/editor_file_system.h
index 75ca79932f..f2f72eddbd 100644
--- a/editor/editor_file_system.h
+++ b/editor/editor_file_system.h
@@ -31,11 +31,11 @@
 #ifndef EDITOR_FILE_SYSTEM_H
 #define EDITOR_FILE_SYSTEM_H
 
-#include "os/dir_access.h"
-#include "os/thread.h"
-#include "os/thread_safe.h"
+#include "core/os/dir_access.h"
+#include "core/os/thread.h"
+#include "core/os/thread_safe.h"
+#include "core/set.h"
 #include "scene/main/node.h"
-#include "set.h"
 class FileAccess;
 
 struct EditorProgressBG;
diff --git a/editor/editor_help.cpp b/editor/editor_help.cpp
index d84b9bff91..8d371714cf 100644
--- a/editor/editor_help.cpp
+++ b/editor/editor_help.cpp
@@ -30,11 +30,11 @@
 
 #include "editor_help.h"
 
+#include "core/os/keyboard.h"
 #include "doc_data_compressed.gen.h"
 #include "editor/plugins/script_editor_plugin.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "os/keyboard.h"
 
 #define CONTRIBUTE_URL "http://docs.godotengine.org/en/latest/community/contributing/updating_the_class_reference.html"
 #define CONTRIBUTE2_URL "https://github.com/godotengine/godot-docs"
diff --git a/editor/editor_initialize_ssl.cpp b/editor/editor_initialize_ssl.cpp
index aedbfb7bd7..9f7537cc9a 100644
--- a/editor/editor_initialize_ssl.cpp
+++ b/editor/editor_initialize_ssl.cpp
@@ -31,8 +31,8 @@
 #include "editor_initialize_ssl.h"
 
 #include "certs_compressed.gen.h"
-#include "io/compression.h"
-#include "io/stream_peer_ssl.h"
+#include "core/io/compression.h"
+#include "core/io/stream_peer_ssl.h"
 
 void editor_initialize_certificates() {
 
diff --git a/editor/editor_log.cpp b/editor/editor_log.cpp
index b3ec717d85..3fc35810df 100644
--- a/editor/editor_log.cpp
+++ b/editor/editor_log.cpp
@@ -31,10 +31,10 @@
 #include "editor_log.h"
 
 #include "core/os/keyboard.h"
+#include "core/version.h"
 #include "editor_node.h"
 #include "scene/gui/center_container.h"
 #include "scene/resources/dynamic_font.h"
-#include "version.h"
 
 void EditorLog::_error_handler(void *p_self, const char *p_func, const char *p_file, int p_line, const char *p_error, const char *p_errorexp, ErrorHandlerType p_type) {
 
diff --git a/editor/editor_log.h b/editor/editor_log.h
index 8d0310d914..78a5671d29 100644
--- a/editor/editor_log.h
+++ b/editor/editor_log.h
@@ -36,7 +36,7 @@
 #include "scene/gui/rich_text_label.h"
 #include "scene/gui/texture_button.h"
 //#include "scene/gui/empty_control.h"
-#include "os/thread.h"
+#include "core/os/thread.h"
 #include "pane_drag.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/panel_container.h"
diff --git a/editor/editor_name_dialog.cpp b/editor/editor_name_dialog.cpp
index bacb288273..1ef61802c4 100644
--- a/editor/editor_name_dialog.cpp
+++ b/editor/editor_name_dialog.cpp
@@ -30,8 +30,8 @@
 
 #include "editor_name_dialog.h"
 
-#include "class_db.h"
-#include "os/keyboard.h"
+#include "core/class_db.h"
+#include "core/os/keyboard.h"
 
 void EditorNameDialog::_line_gui_input(const Ref<InputEvent> &p_event) {
 
diff --git a/editor/editor_plugin.h b/editor/editor_plugin.h
index 1ebddbe2b0..6c385abf9b 100644
--- a/editor/editor_plugin.h
+++ b/editor/editor_plugin.h
@@ -31,15 +31,15 @@
 #ifndef EDITOR_PLUGIN_H
 #define EDITOR_PLUGIN_H
 
+#include "core/io/config_file.h"
+#include "core/undo_redo.h"
 #include "editor/editor_inspector.h"
 #include "editor/import/editor_import_plugin.h"
 #include "editor/import/resource_importer_scene.h"
 #include "editor/script_create_dialog.h"
-#include "io/config_file.h"
 #include "scene/gui/tool_button.h"
 #include "scene/main/node.h"
 #include "scene/resources/texture.h"
-#include "undo_redo.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/editor/editor_plugin_settings.cpp b/editor/editor_plugin_settings.cpp
index 68f8ed6d94..ef0b61e882 100644
--- a/editor/editor_plugin_settings.cpp
+++ b/editor/editor_plugin_settings.cpp
@@ -30,11 +30,11 @@
 
 #include "editor_plugin_settings.h"
 
+#include "core/io/config_file.h"
+#include "core/os/file_access.h"
+#include "core/os/main_loop.h"
+#include "core/project_settings.h"
 #include "editor_node.h"
-#include "io/config_file.h"
-#include "os/file_access.h"
-#include "os/main_loop.h"
-#include "project_settings.h"
 #include "scene/gui/margin_container.h"
 
 void EditorPluginSettings::_notification(int p_what) {
diff --git a/editor/editor_plugin_settings.h b/editor/editor_plugin_settings.h
index 194fac6b92..fe14f87cfc 100644
--- a/editor/editor_plugin_settings.h
+++ b/editor/editor_plugin_settings.h
@@ -31,11 +31,11 @@
 #ifndef EDITORPLUGINSETTINGS_H
 #define EDITORPLUGINSETTINGS_H
 
+#include "core/undo_redo.h"
 #include "editor/plugin_config_dialog.h"
 #include "editor_data.h"
 #include "property_editor.h"
 #include "scene/gui/dialogs.h"
-#include "undo_redo.h"
 
 class EditorPluginSettings : public VBoxContainer {
 
diff --git a/editor/editor_profiler.cpp b/editor/editor_profiler.cpp
index 223bb9df84..b57e3826c6 100644
--- a/editor/editor_profiler.cpp
+++ b/editor/editor_profiler.cpp
@@ -30,9 +30,9 @@
 
 #include "editor_profiler.h"
 
+#include "core/os/os.h"
 #include "editor_scale.h"
 #include "editor_settings.h"
-#include "os/os.h"
 
 void EditorProfiler::_make_metric_ptrs(Metric &m) {
 
diff --git a/editor/editor_resource_preview.cpp b/editor/editor_resource_preview.cpp
index bc56a95b47..edfee595ea 100644
--- a/editor/editor_resource_preview.cpp
+++ b/editor/editor_resource_preview.cpp
@@ -30,13 +30,13 @@
 
 #include "editor_resource_preview.h"
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/message_queue.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
 #include "editor_scale.h"
 #include "editor_settings.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "message_queue.h"
-#include "os/file_access.h"
-#include "project_settings.h"
 
 bool EditorResourcePreviewGenerator::handles(const String &p_type) const {
 
diff --git a/editor/editor_resource_preview.h b/editor/editor_resource_preview.h
index 74841b1a1e..434b26e901 100644
--- a/editor/editor_resource_preview.h
+++ b/editor/editor_resource_preview.h
@@ -31,8 +31,8 @@
 #ifndef EDITORRESOURCEPREVIEW_H
 #define EDITORRESOURCEPREVIEW_H
 
-#include "os/semaphore.h"
-#include "os/thread.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
 #include "scene/main/node.h"
 #include "scene/resources/texture.h"
 
diff --git a/editor/editor_run.cpp b/editor/editor_run.cpp
index 62870ab35c..ad5cf49f3f 100644
--- a/editor/editor_run.cpp
+++ b/editor/editor_run.cpp
@@ -30,8 +30,8 @@
 
 #include "editor_run.h"
 
+#include "core/project_settings.h"
 #include "editor_settings.h"
-#include "project_settings.h"
 
 EditorRun::Status EditorRun::get_status() const {
 
diff --git a/editor/editor_run.h b/editor/editor_run.h
index 8da607e6dc..df2324efd7 100644
--- a/editor/editor_run.h
+++ b/editor/editor_run.h
@@ -31,7 +31,7 @@
 #ifndef EDITOR_RUN_H
 #define EDITOR_RUN_H
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/main/node.h"
 class EditorRun {
 public:
diff --git a/editor/editor_run_script.h b/editor/editor_run_script.h
index 027fdd428d..892d5151a0 100644
--- a/editor/editor_run_script.h
+++ b/editor/editor_run_script.h
@@ -31,8 +31,8 @@
 #ifndef EDITOR_RUN_SCRIPT_H
 #define EDITOR_RUN_SCRIPT_H
 
+#include "core/reference.h"
 #include "editor_plugin.h"
-#include "reference.h"
 class EditorNode;
 class EditorScript : public Reference {
 
diff --git a/editor/editor_scale.cpp b/editor/editor_scale.cpp
index 365ea95e3e..ba1607b408 100644
--- a/editor/editor_scale.cpp
+++ b/editor/editor_scale.cpp
@@ -30,7 +30,7 @@
 
 #include "editor_scale.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 static float scale = 1.0;
 
diff --git a/editor/editor_settings.h b/editor/editor_settings.h
index e5b61abf54..8165c36e67 100644
--- a/editor/editor_settings.h
+++ b/editor/editor_settings.h
@@ -31,13 +31,13 @@
 #ifndef EDITOR_SETTINGS_H
 #define EDITOR_SETTINGS_H
 
-#include "object.h"
+#include "core/object.h"
 
 #include "core/io/config_file.h"
-#include "os/thread_safe.h"
-#include "resource.h"
+#include "core/os/thread_safe.h"
+#include "core/resource.h"
+#include "core/translation.h"
 #include "scene/gui/shortcut.h"
-#include "translation.h"
 
 class EditorPlugin;
 
diff --git a/editor/editor_spin_slider.cpp b/editor/editor_spin_slider.cpp
index b2c9f9865a..b5353a071c 100644
--- a/editor/editor_spin_slider.cpp
+++ b/editor/editor_spin_slider.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "editor_spin_slider.h"
+#include "core/math/expression.h"
+#include "core/os/input.h"
 #include "editor_scale.h"
-#include "math/expression.h"
-#include "os/input.h"
 
 String EditorSpinSlider::get_tooltip(const Point2 &p_pos) const {
 	return rtos(get_value());
diff --git a/editor/export_template_manager.cpp b/editor/export_template_manager.cpp
index 6c9d1568fa..52611367f6 100644
--- a/editor/export_template_manager.cpp
+++ b/editor/export_template_manager.cpp
@@ -30,14 +30,14 @@
 
 #include "export_template_manager.h"
 
+#include "core/io/json.h"
+#include "core/io/zip_io.h"
+#include "core/os/dir_access.h"
 #include "core/os/input.h"
 #include "core/os/keyboard.h"
+#include "core/version.h"
 #include "editor_node.h"
 #include "editor_scale.h"
-#include "io/json.h"
-#include "io/zip_io.h"
-#include "os/dir_access.h"
-#include "version.h"
 
 void ExportTemplateManager::_update_template_list() {
 
diff --git a/editor/file_type_cache.cpp b/editor/file_type_cache.cpp
index 02e647b733..0e328247ac 100644
--- a/editor/file_type_cache.cpp
+++ b/editor/file_type_cache.cpp
@@ -30,8 +30,8 @@
 
 #include "file_type_cache.h"
 
-#include "os/file_access.h"
-#include "project_settings.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
 
 FileTypeCache *FileTypeCache::singleton = NULL;
 
diff --git a/editor/file_type_cache.h b/editor/file_type_cache.h
index 33b50cb1c4..aa2d78f763 100644
--- a/editor/file_type_cache.h
+++ b/editor/file_type_cache.h
@@ -31,7 +31,7 @@
 #ifndef FILE_TYPE_CACHE_H
 #define FILE_TYPE_CACHE_H
 
-#include "object.h"
+#include "core/object.h"
 
 class FileTypeCache : Object {
 
diff --git a/editor/fileserver/editor_file_server.cpp b/editor/fileserver/editor_file_server.cpp
index 28b1095256..d6e89d0573 100644
--- a/editor/fileserver/editor_file_server.cpp
+++ b/editor/fileserver/editor_file_server.cpp
@@ -31,7 +31,7 @@
 #include "editor_file_server.h"
 
 #include "../editor_settings.h"
-#include "io/marshalls.h"
+#include "core/io/marshalls.h"
 
 //#define DEBUG_PRINT(m_p) print_line(m_p)
 //#define DEBUG_TIME(m_what) printf("MS: %s - %lu\n", m_what, OS::get_singleton()->get_ticks_usec());
diff --git a/editor/fileserver/editor_file_server.h b/editor/fileserver/editor_file_server.h
index d73c78ee70..8e32c3c82f 100644
--- a/editor/fileserver/editor_file_server.h
+++ b/editor/fileserver/editor_file_server.h
@@ -31,11 +31,11 @@
 #ifndef EDITOR_FILE_SERVER_H
 #define EDITOR_FILE_SERVER_H
 
-#include "io/file_access_network.h"
-#include "io/packet_peer.h"
-#include "io/tcp_server.h"
-#include "object.h"
-#include "os/thread.h"
+#include "core/io/file_access_network.h"
+#include "core/io/packet_peer.h"
+#include "core/io/tcp_server.h"
+#include "core/object.h"
+#include "core/os/thread.h"
 
 class EditorFileServer : public Object {
 
diff --git a/editor/filesystem_dock.cpp b/editor/filesystem_dock.cpp
index cb38c2f85e..3a55966e7b 100644
--- a/editor/filesystem_dock.cpp
+++ b/editor/filesystem_dock.cpp
@@ -30,14 +30,14 @@
 
 #include "filesystem_dock.h"
 
+#include "core/io/resource_loader.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
 #include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "io/resource_loader.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
 #include "scene/main/viewport.h"
 
 bool FileSystemDock::_create_tree(TreeItem *p_parent, EditorFileSystemDirectory *p_dir, Vector<String> &uncollapsed_paths) {
diff --git a/editor/filesystem_dock.h b/editor/filesystem_dock.h
index fbbe87fc16..40be645bf7 100644
--- a/editor/filesystem_dock.h
+++ b/editor/filesystem_dock.h
@@ -44,8 +44,8 @@
 #include "scene/gui/tree.h"
 #include "scene/main/timer.h"
 
-#include "os/dir_access.h"
-#include "os/thread.h"
+#include "core/os/dir_access.h"
+#include "core/os/thread.h"
 
 #include "create_dialog.h"
 
diff --git a/editor/groups_editor.h b/editor/groups_editor.h
index 461cf0f8c2..7705b3b6fb 100644
--- a/editor/groups_editor.h
+++ b/editor/groups_editor.h
@@ -31,6 +31,7 @@
 #ifndef GROUPS_EDITOR_H
 #define GROUPS_EDITOR_H
 
+#include "core/undo_redo.h"
 #include "editor/scene_tree_editor.h"
 #include "scene/gui/button.h"
 #include "scene/gui/dialogs.h"
@@ -39,7 +40,6 @@
 #include "scene/gui/popup.h"
 #include "scene/gui/tool_button.h"
 #include "scene/gui/tree.h"
-#include "undo_redo.h"
 
 /**
 @author Juan Linietsky <reduzio@gmail.com>
diff --git a/editor/import/editor_import_collada.cpp b/editor/import/editor_import_collada.cpp
index d4bd4f85e6..31c1886d32 100644
--- a/editor/import/editor_import_collada.cpp
+++ b/editor/import/editor_import_collada.cpp
@@ -30,9 +30,9 @@
 
 #include "editor_import_collada.h"
 
+#include "core/os/os.h"
 #include "editor/collada/collada.h"
 #include "editor/editor_node.h"
-#include "os/os.h"
 #include "scene/3d/camera.h"
 #include "scene/3d/light.h"
 #include "scene/3d/mesh_instance.h"
diff --git a/editor/import/editor_import_plugin.h b/editor/import/editor_import_plugin.h
index 92d83158ef..b850c0605b 100644
--- a/editor/import/editor_import_plugin.h
+++ b/editor/import/editor_import_plugin.h
@@ -31,7 +31,7 @@
 #ifndef EDITOR_IMPORT_PLUGIN_H
 #define EDITOR_IMPORT_PLUGIN_H
 
-#include "io/resource_import.h"
+#include "core/io/resource_import.h"
 
 class EditorImportPlugin : public ResourceImporter {
 	GDCLASS(EditorImportPlugin, Reference)
diff --git a/editor/import/editor_scene_importer_gltf.cpp b/editor/import/editor_scene_importer_gltf.cpp
index 3d3dc978bc..80713a157b 100644
--- a/editor/import/editor_scene_importer_gltf.cpp
+++ b/editor/import/editor_scene_importer_gltf.cpp
@@ -29,10 +29,10 @@
 /*************************************************************************/
 
 #include "editor_scene_importer_gltf.h"
-#include "io/json.h"
-#include "math_defs.h"
-#include "os/file_access.h"
-#include "os/os.h"
+#include "core/io/json.h"
+#include "core/math/math_defs.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "scene/3d/camera.h"
 #include "scene/3d/mesh_instance.h"
 #include "scene/animation/animation_player.h"
diff --git a/editor/import/resource_importer_bitmask.cpp b/editor/import/resource_importer_bitmask.cpp
index 7b330936f6..917d6d1bcc 100644
--- a/editor/import/resource_importer_bitmask.cpp
+++ b/editor/import/resource_importer_bitmask.cpp
@@ -30,10 +30,10 @@
 
 #include "resource_importer_bitmask.h"
 #include "core/image.h"
+#include "core/io/config_file.h"
+#include "core/io/image_loader.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_node.h"
-#include "io/config_file.h"
-#include "io/image_loader.h"
 #include "scene/resources/bit_mask.h"
 #include "scene/resources/texture.h"
 
diff --git a/editor/import/resource_importer_bitmask.h b/editor/import/resource_importer_bitmask.h
index f3537df819..1b97152099 100644
--- a/editor/import/resource_importer_bitmask.h
+++ b/editor/import/resource_importer_bitmask.h
@@ -31,8 +31,8 @@
 #ifndef RESOURCE_IMPORTER_BITMASK_H
 #define RESOURCE_IMPORTER_BITMASK_H
 
-#include "image.h"
-#include "io/resource_import.h"
+#include "core/image.h"
+#include "core/io/resource_import.h"
 
 class StreamBitMap;
 
diff --git a/editor/import/resource_importer_csv_translation.cpp b/editor/import/resource_importer_csv_translation.cpp
index cf850eef03..e7f9e1afe6 100644
--- a/editor/import/resource_importer_csv_translation.cpp
+++ b/editor/import/resource_importer_csv_translation.cpp
@@ -30,10 +30,10 @@
 
 #include "resource_importer_csv_translation.h"
 
-#include "compressed_translation.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
-#include "translation.h"
+#include "core/compressed_translation.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
+#include "core/translation.h"
 
 String ResourceImporterCSVTranslation::get_importer_name() const {
 
diff --git a/editor/import/resource_importer_csv_translation.h b/editor/import/resource_importer_csv_translation.h
index f5f230c6bd..370c182f65 100644
--- a/editor/import/resource_importer_csv_translation.h
+++ b/editor/import/resource_importer_csv_translation.h
@@ -31,7 +31,7 @@
 #ifndef RESOURCEIMPORTERCSVTRANSLATION_H
 #define RESOURCEIMPORTERCSVTRANSLATION_H
 
-#include "io/resource_import.h"
+#include "core/io/resource_import.h"
 
 class ResourceImporterCSVTranslation : public ResourceImporter {
 	GDCLASS(ResourceImporterCSVTranslation, ResourceImporter)
diff --git a/editor/import/resource_importer_image.cpp b/editor/import/resource_importer_image.cpp
index e42f9eaf51..923a9a20ec 100644
--- a/editor/import/resource_importer_image.cpp
+++ b/editor/import/resource_importer_image.cpp
@@ -30,9 +30,9 @@
 
 #include "resource_importer_image.h"
 
-#include "io/image_loader.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/image_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
 #include "scene/resources/texture.h"
 
 String ResourceImporterImage::get_importer_name() const {
diff --git a/editor/import/resource_importer_image.h b/editor/import/resource_importer_image.h
index 5df1231239..d282ac482d 100644
--- a/editor/import/resource_importer_image.h
+++ b/editor/import/resource_importer_image.h
@@ -31,8 +31,8 @@
 #ifndef RESOURCE_IMPORTER_IMAGE_H
 #define RESOURCE_IMPORTER_IMAGE_H
 
-#include "image.h"
-#include "io/resource_import.h"
+#include "core/image.h"
+#include "core/io/resource_import.h"
 
 class ResourceImporterImage : public ResourceImporter {
 	GDCLASS(ResourceImporterImage, ResourceImporter)
diff --git a/editor/import/resource_importer_layered_texture.cpp b/editor/import/resource_importer_layered_texture.cpp
index eeaa002f04..a0ed27c72c 100644
--- a/editor/import/resource_importer_layered_texture.cpp
+++ b/editor/import/resource_importer_layered_texture.cpp
@@ -32,10 +32,10 @@
 
 #include "resource_importer_texture.h"
 
+#include "core/io/config_file.h"
+#include "core/io/image_loader.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_node.h"
-#include "io/config_file.h"
-#include "io/image_loader.h"
 #include "scene/resources/texture.h"
 
 String ResourceImporterLayeredTexture::get_importer_name() const {
diff --git a/editor/import/resource_importer_layered_texture.h b/editor/import/resource_importer_layered_texture.h
index d3a3b6d1ad..a4b83bf56c 100644
--- a/editor/import/resource_importer_layered_texture.h
+++ b/editor/import/resource_importer_layered_texture.h
@@ -31,8 +31,8 @@
 #ifndef RESOURCE_IMPORTER_LAYERED_TEXTURE_H
 #define RESOURCE_IMPORTER_LAYERED_TEXTURE_H
 
-#include "image.h"
-#include "io/resource_import.h"
+#include "core/image.h"
+#include "core/io/resource_import.h"
 
 class StreamTexture;
 
diff --git a/editor/import/resource_importer_obj.cpp b/editor/import/resource_importer_obj.cpp
index 3f101cd04d..b18bbc8ce9 100644
--- a/editor/import/resource_importer_obj.cpp
+++ b/editor/import/resource_importer_obj.cpp
@@ -30,8 +30,8 @@
 
 #include "resource_importer_obj.h"
 
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
 #include "scene/3d/mesh_instance.h"
 #include "scene/3d/spatial.h"
 #include "scene/resources/mesh.h"
diff --git a/editor/import/resource_importer_scene.cpp b/editor/import/resource_importer_scene.cpp
index f544811eb0..6d72cb4909 100644
--- a/editor/import/resource_importer_scene.cpp
+++ b/editor/import/resource_importer_scene.cpp
@@ -30,8 +30,8 @@
 
 #include "resource_importer_scene.h"
 
+#include "core/io/resource_saver.h"
 #include "editor/editor_node.h"
-#include "io/resource_saver.h"
 #include "scene/resources/packed_scene.h"
 
 #include "scene/3d/collision_shape.h"
diff --git a/editor/import/resource_importer_scene.h b/editor/import/resource_importer_scene.h
index 2bde9432fc..b046e2e975 100644
--- a/editor/import/resource_importer_scene.h
+++ b/editor/import/resource_importer_scene.h
@@ -31,7 +31,7 @@
 #ifndef RESOURCEIMPORTERSCENE_H
 #define RESOURCEIMPORTERSCENE_H
 
-#include "io/resource_import.h"
+#include "core/io/resource_import.h"
 #include "scene/resources/animation.h"
 #include "scene/resources/mesh.h"
 #include "scene/resources/shape.h"
diff --git a/editor/import/resource_importer_texture.cpp b/editor/import/resource_importer_texture.cpp
index af2615f9cf..acca1725d7 100644
--- a/editor/import/resource_importer_texture.cpp
+++ b/editor/import/resource_importer_texture.cpp
@@ -30,10 +30,10 @@
 
 #include "resource_importer_texture.h"
 
+#include "core/io/config_file.h"
+#include "core/io/image_loader.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_node.h"
-#include "io/config_file.h"
-#include "io/image_loader.h"
 #include "scene/resources/texture.h"
 
 void ResourceImporterTexture::_texture_reimport_srgb(const Ref<StreamTexture> &p_tex) {
diff --git a/editor/import/resource_importer_texture.h b/editor/import/resource_importer_texture.h
index fd6f75c3f4..b49b29874d 100644
--- a/editor/import/resource_importer_texture.h
+++ b/editor/import/resource_importer_texture.h
@@ -31,8 +31,8 @@
 #ifndef RESOURCEIMPORTTEXTURE_H
 #define RESOURCEIMPORTTEXTURE_H
 
-#include "image.h"
-#include "io/resource_import.h"
+#include "core/image.h"
+#include "core/io/resource_import.h"
 
 class StreamTexture;
 
diff --git a/editor/import/resource_importer_wav.cpp b/editor/import/resource_importer_wav.cpp
index d04f29ea5e..55f4cc7439 100644
--- a/editor/import/resource_importer_wav.cpp
+++ b/editor/import/resource_importer_wav.cpp
@@ -30,9 +30,9 @@
 
 #include "resource_importer_wav.h"
 
-#include "io/marshalls.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/marshalls.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
 #include "scene/resources/audio_stream_sample.h"
 
 String ResourceImporterWAV::get_importer_name() const {
diff --git a/editor/import/resource_importer_wav.h b/editor/import/resource_importer_wav.h
index f78ab09e9b..a630ff732e 100644
--- a/editor/import/resource_importer_wav.h
+++ b/editor/import/resource_importer_wav.h
@@ -31,7 +31,7 @@
 #ifndef RESOURCEIMPORTWAV_H
 #define RESOURCEIMPORTWAV_H
 
-#include "io/resource_import.h"
+#include "core/io/resource_import.h"
 
 class ResourceImporterWAV : public ResourceImporter {
 	GDCLASS(ResourceImporterWAV, ResourceImporter)
diff --git a/editor/output_strings.h b/editor/output_strings.h
index 0729971704..4833f2067e 100644
--- a/editor/output_strings.h
+++ b/editor/output_strings.h
@@ -31,7 +31,7 @@
 #ifndef OUTPUT_STRINGS_H
 #define OUTPUT_STRINGS_H
 
-#include "map.h"
+#include "core/map.h"
 #include "scene/gui/control.h"
 #include "scene/gui/scroll_bar.h"
 
diff --git a/editor/plugins/animation_blend_space_1d_editor.cpp b/editor/plugins/animation_blend_space_1d_editor.cpp
index 10c19d8173..4b1e710705 100644
--- a/editor/plugins/animation_blend_space_1d_editor.cpp
+++ b/editor/plugins/animation_blend_space_1d_editor.cpp
@@ -30,7 +30,7 @@
 
 #include "animation_blend_space_1d_editor.h"
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 #include "scene/animation/animation_blend_tree.h"
 
 StringName AnimationNodeBlendSpace1DEditor::get_blend_position_path() const {
diff --git a/editor/plugins/animation_blend_space_2d_editor.cpp b/editor/plugins/animation_blend_space_2d_editor.cpp
index 6dbba2ba80..c4f8cdc3d7 100644
--- a/editor/plugins/animation_blend_space_2d_editor.cpp
+++ b/editor/plugins/animation_blend_space_2d_editor.cpp
@@ -31,10 +31,10 @@
 #include "animation_blend_space_2d_editor.h"
 
 #include "core/io/resource_loader.h"
+#include "core/math/delaunay.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
-#include "math/delaunay.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/animation/animation_blend_tree.h"
 #include "scene/animation/animation_player.h"
 #include "scene/gui/menu_button.h"
diff --git a/editor/plugins/animation_blend_tree_editor_plugin.cpp b/editor/plugins/animation_blend_tree_editor_plugin.cpp
index 66142a1e05..4d27a5cea4 100644
--- a/editor/plugins/animation_blend_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_blend_tree_editor_plugin.cpp
@@ -31,10 +31,10 @@
 #include "animation_blend_tree_editor_plugin.h"
 
 #include "core/io/resource_loader.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
 #include "editor/editor_inspector.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/animation/animation_player.h"
 #include "scene/gui/menu_button.h"
 #include "scene/gui/panel.h"
diff --git a/editor/plugins/animation_player_editor_plugin.cpp b/editor/plugins/animation_player_editor_plugin.cpp
index 9ab5436de8..bd7b58f65a 100644
--- a/editor/plugins/animation_player_editor_plugin.cpp
+++ b/editor/plugins/animation_player_editor_plugin.cpp
@@ -30,12 +30,12 @@
 
 #include "animation_player_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/keyboard.h"
+#include "core/project_settings.h"
 #include "editor/animation_track_editor.h"
 #include "editor/editor_settings.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/keyboard.h"
-#include "project_settings.h"
 
 // For onion skinning
 #include "editor/plugins/canvas_item_editor_plugin.h"
diff --git a/editor/plugins/animation_state_machine_editor.cpp b/editor/plugins/animation_state_machine_editor.cpp
index 0788921910..d00c06bd12 100644
--- a/editor/plugins/animation_state_machine_editor.cpp
+++ b/editor/plugins/animation_state_machine_editor.cpp
@@ -31,10 +31,10 @@
 #include "animation_state_machine_editor.h"
 
 #include "core/io/resource_loader.h"
+#include "core/math/delaunay.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
-#include "math/delaunay.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/animation/animation_blend_tree.h"
 #include "scene/animation/animation_player.h"
 #include "scene/gui/menu_button.h"
diff --git a/editor/plugins/animation_tree_editor_plugin.cpp b/editor/plugins/animation_tree_editor_plugin.cpp
index 90e5adc680..24787a78e9 100644
--- a/editor/plugins/animation_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_tree_editor_plugin.cpp
@@ -35,10 +35,10 @@
 #include "animation_blend_tree_editor_plugin.h"
 #include "animation_state_machine_editor.h"
 #include "core/io/resource_loader.h"
+#include "core/math/delaunay.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
-#include "math/delaunay.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/animation/animation_blend_tree.h"
 #include "scene/animation/animation_player.h"
 #include "scene/gui/menu_button.h"
diff --git a/editor/plugins/animation_tree_player_editor_plugin.cpp b/editor/plugins/animation_tree_player_editor_plugin.cpp
index 36d10ab99e..c79e3a436d 100644
--- a/editor/plugins/animation_tree_player_editor_plugin.cpp
+++ b/editor/plugins/animation_tree_player_editor_plugin.cpp
@@ -31,9 +31,9 @@
 #include "animation_tree_player_editor_plugin.h"
 
 #include "core/io/resource_loader.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/gui/menu_button.h"
 #include "scene/gui/panel.h"
 #include "scene/main/viewport.h"
diff --git a/editor/plugins/audio_stream_editor_plugin.cpp b/editor/plugins/audio_stream_editor_plugin.cpp
index 454a5d72f2..06ca5833e2 100644
--- a/editor/plugins/audio_stream_editor_plugin.cpp
+++ b/editor/plugins/audio_stream_editor_plugin.cpp
@@ -30,9 +30,9 @@
 
 #include "audio_stream_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
+#include "core/project_settings.h"
 #include "editor/editor_settings.h"
-#include "io/resource_loader.h"
-#include "project_settings.h"
 
 void AudioStreamEditor::_notification(int p_what) {
 
diff --git a/editor/plugins/canvas_item_editor_plugin.cpp b/editor/plugins/canvas_item_editor_plugin.cpp
index fbf4671165..042f085e98 100644
--- a/editor/plugins/canvas_item_editor_plugin.cpp
+++ b/editor/plugins/canvas_item_editor_plugin.cpp
@@ -30,15 +30,15 @@
 
 #include "canvas_item_editor_plugin.h"
 
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
+#include "core/project_settings.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
 #include "editor/plugins/animation_player_editor_plugin.h"
 #include "editor/plugins/script_editor_plugin.h"
 #include "editor/script_editor_debugger.h"
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "print_string.h"
-#include "project_settings.h"
 #include "scene/2d/light_2d.h"
 #include "scene/2d/particles_2d.h"
 #include "scene/2d/polygon_2d.h"
diff --git a/editor/plugins/collision_polygon_editor_plugin.cpp b/editor/plugins/collision_polygon_editor_plugin.cpp
index 5109379add..805a7d3835 100644
--- a/editor/plugins/collision_polygon_editor_plugin.cpp
+++ b/editor/plugins/collision_polygon_editor_plugin.cpp
@@ -31,10 +31,10 @@
 #include "collision_polygon_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
+#include "core/os/file_access.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "editor/editor_settings.h"
-#include "os/file_access.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/3d/camera.h"
 #include "spatial_editor_plugin.h"
 
diff --git a/editor/plugins/curve_editor_plugin.cpp b/editor/plugins/curve_editor_plugin.cpp
index f5bdf77973..79169d3183 100644
--- a/editor/plugins/curve_editor_plugin.cpp
+++ b/editor/plugins/curve_editor_plugin.cpp
@@ -31,9 +31,9 @@
 #include "curve_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
-#include "core_string_names.h"
-#include "os/input.h"
-#include "os/keyboard.h"
+#include "core/core_string_names.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 
 CurveEditor::CurveEditor() {
 	_selected_point = -1;
diff --git a/editor/plugins/editor_preview_plugins.cpp b/editor/plugins/editor_preview_plugins.cpp
index 9acbceec92..72a746e95b 100644
--- a/editor/plugins/editor_preview_plugins.cpp
+++ b/editor/plugins/editor_preview_plugins.cpp
@@ -30,12 +30,12 @@
 
 #include "editor_preview_plugins.h"
 
+#include "core/io/file_access_memory.h"
+#include "core/io/resource_loader.h"
+#include "core/os/os.h"
 #include "editor/editor_node.h"
 #include "editor/editor_scale.h"
 #include "editor/editor_settings.h"
-#include "io/file_access_memory.h"
-#include "io/resource_loader.h"
-#include "os/os.h"
 #include "scene/resources/bit_mask.h"
 #include "scene/resources/dynamic_font.h"
 #include "scene/resources/material.h"
diff --git a/editor/plugins/item_list_editor_plugin.cpp b/editor/plugins/item_list_editor_plugin.cpp
index 60e3d8292e..7b5de9c009 100644
--- a/editor/plugins/item_list_editor_plugin.cpp
+++ b/editor/plugins/item_list_editor_plugin.cpp
@@ -30,7 +30,7 @@
 
 #include "item_list_editor_plugin.h"
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 
 bool ItemListPlugin::_set(const StringName &p_name, const Variant &p_value) {
 
diff --git a/editor/plugins/light_occluder_2d_editor_plugin.cpp b/editor/plugins/light_occluder_2d_editor_plugin.cpp
index 3351e5918f..4f8a307cc1 100644
--- a/editor/plugins/light_occluder_2d_editor_plugin.cpp
+++ b/editor/plugins/light_occluder_2d_editor_plugin.cpp
@@ -31,8 +31,8 @@
 #include "light_occluder_2d_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
+#include "core/os/file_access.h"
 #include "editor/editor_settings.h"
-#include "os/file_access.h"
 
 void LightOccluder2DEditor::_notification(int p_what) {
 
diff --git a/editor/plugins/particles_2d_editor_plugin.cpp b/editor/plugins/particles_2d_editor_plugin.cpp
index 3bde157edf..5dcbca2ed6 100644
--- a/editor/plugins/particles_2d_editor_plugin.cpp
+++ b/editor/plugins/particles_2d_editor_plugin.cpp
@@ -31,7 +31,7 @@
 #include "particles_2d_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 #include "scene/gui/separator.h"
 #include "scene/resources/particles_material.h"
 
diff --git a/editor/plugins/particles_editor_plugin.cpp b/editor/plugins/particles_editor_plugin.cpp
index 9a1a60805f..6b41946918 100644
--- a/editor/plugins/particles_editor_plugin.cpp
+++ b/editor/plugins/particles_editor_plugin.cpp
@@ -30,8 +30,8 @@
 
 #include "particles_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
 #include "editor/plugins/spatial_editor_plugin.h"
-#include "io/resource_loader.h"
 #include "scene/3d/cpu_particles.h"
 #include "scene/resources/particles_material.h"
 
diff --git a/editor/plugins/path_2d_editor_plugin.cpp b/editor/plugins/path_2d_editor_plugin.cpp
index 33e182faef..96c1ad2f2b 100644
--- a/editor/plugins/path_2d_editor_plugin.cpp
+++ b/editor/plugins/path_2d_editor_plugin.cpp
@@ -31,9 +31,9 @@
 #include "path_2d_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
 #include "editor/editor_settings.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
 
 void Path2DEditor::_notification(int p_what) {
 
diff --git a/editor/plugins/polygon_2d_editor_plugin.cpp b/editor/plugins/polygon_2d_editor_plugin.cpp
index a437cd5362..e0c8cf41ff 100644
--- a/editor/plugins/polygon_2d_editor_plugin.cpp
+++ b/editor/plugins/polygon_2d_editor_plugin.cpp
@@ -31,10 +31,10 @@
 #include "polygon_2d_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
+#include "core/os/file_access.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "editor/editor_settings.h"
-#include "os/file_access.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/2d/skeleton_2d.h"
 
 Node2D *Polygon2DEditor::_get_node() const {
diff --git a/editor/plugins/resource_preloader_editor_plugin.cpp b/editor/plugins/resource_preloader_editor_plugin.cpp
index c6e8ec1a2b..da6aa48f9c 100644
--- a/editor/plugins/resource_preloader_editor_plugin.cpp
+++ b/editor/plugins/resource_preloader_editor_plugin.cpp
@@ -30,9 +30,9 @@
 
 #include "resource_preloader_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
+#include "core/project_settings.h"
 #include "editor/editor_settings.h"
-#include "io/resource_loader.h"
-#include "project_settings.h"
 
 void ResourcePreloaderEditor::_gui_input(Ref<InputEvent> p_event) {
 }
diff --git a/editor/plugins/script_editor_plugin.h b/editor/plugins/script_editor_plugin.h
index 737f17358b..120755b5af 100644
--- a/editor/plugins/script_editor_plugin.h
+++ b/editor/plugins/script_editor_plugin.h
@@ -31,6 +31,7 @@
 #ifndef SCRIPT_EDITOR_PLUGIN_H
 #define SCRIPT_EDITOR_PLUGIN_H
 
+#include "core/script_language.h"
 #include "editor/code_editor.h"
 #include "editor/editor_help.h"
 #include "editor/editor_plugin.h"
@@ -44,7 +45,6 @@
 #include "scene/gui/tree.h"
 #include "scene/main/timer.h"
 #include "scene/resources/text_file.h"
-#include "script_language.h"
 
 class ScriptEditorQuickOpen : public ConfirmationDialog {
 
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index e0eb89d6b6..82c2e07940 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -30,10 +30,10 @@
 
 #include "script_text_editor.h"
 
+#include "core/os/keyboard.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
 #include "editor/script_editor_debugger.h"
-#include "os/keyboard.h"
 
 Vector<String> ScriptTextEditor::get_functions() {
 
diff --git a/editor/plugins/sprite_frames_editor_plugin.cpp b/editor/plugins/sprite_frames_editor_plugin.cpp
index fcbbee2b9c..30246147c2 100644
--- a/editor/plugins/sprite_frames_editor_plugin.cpp
+++ b/editor/plugins/sprite_frames_editor_plugin.cpp
@@ -30,9 +30,9 @@
 
 #include "sprite_frames_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
+#include "core/project_settings.h"
 #include "editor/editor_settings.h"
-#include "io/resource_loader.h"
-#include "project_settings.h"
 #include "scene/3d/sprite_3d.h"
 
 void SpriteFramesEditor::_gui_input(Ref<InputEvent> p_event) {
diff --git a/editor/plugins/texture_editor_plugin.cpp b/editor/plugins/texture_editor_plugin.cpp
index e891850870..140d37fdb5 100644
--- a/editor/plugins/texture_editor_plugin.cpp
+++ b/editor/plugins/texture_editor_plugin.cpp
@@ -30,9 +30,9 @@
 
 #include "texture_editor_plugin.h"
 
+#include "core/io/resource_loader.h"
+#include "core/project_settings.h"
 #include "editor/editor_settings.h"
-#include "io/resource_loader.h"
-#include "project_settings.h"
 
 void TextureEditor::_gui_input(Ref<InputEvent> p_event) {
 }
diff --git a/editor/plugins/texture_region_editor_plugin.cpp b/editor/plugins/texture_region_editor_plugin.cpp
index 4390b94ece..33e1f7c6a3 100644
--- a/editor/plugins/texture_region_editor_plugin.cpp
+++ b/editor/plugins/texture_region_editor_plugin.cpp
@@ -31,8 +31,8 @@
 #include "texture_region_editor_plugin.h"
 
 #include "core/core_string_names.h"
-#include "os/input.h"
-#include "os/keyboard.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "scene/gui/check_box.h"
 
 /**
diff --git a/editor/plugins/theme_editor_plugin.cpp b/editor/plugins/theme_editor_plugin.cpp
index 92b95963f9..acee1a6942 100644
--- a/editor/plugins/theme_editor_plugin.cpp
+++ b/editor/plugins/theme_editor_plugin.cpp
@@ -30,8 +30,8 @@
 
 #include "theme_editor_plugin.h"
 
-#include "os/file_access.h"
-#include "version.h"
+#include "core/os/file_access.h"
+#include "core/version.h"
 
 void ThemeEditor::edit(const Ref<Theme> &p_theme) {
 
diff --git a/editor/plugins/tile_map_editor_plugin.cpp b/editor/plugins/tile_map_editor_plugin.cpp
index 58c3fd015e..a0adbfccff 100644
--- a/editor/plugins/tile_map_editor_plugin.cpp
+++ b/editor/plugins/tile_map_editor_plugin.cpp
@@ -31,10 +31,10 @@
 #include "tile_map_editor_plugin.h"
 
 #include "canvas_item_editor_plugin.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "editor/editor_scale.h"
 #include "editor/editor_settings.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/gui/split_container.h"
 
 void TileMapEditor::_notification(int p_what) {
diff --git a/editor/plugins/visual_shader_editor_plugin.cpp b/editor/plugins/visual_shader_editor_plugin.cpp
index ee31e1409c..cefed193ca 100644
--- a/editor/plugins/visual_shader_editor_plugin.cpp
+++ b/editor/plugins/visual_shader_editor_plugin.cpp
@@ -31,10 +31,10 @@
 #include "visual_shader_editor_plugin.h"
 
 #include "core/io/resource_loader.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/project_settings.h"
 #include "editor/editor_properties.h"
-#include "os/input.h"
-#include "os/keyboard.h"
 #include "scene/animation/animation_player.h"
 #include "scene/gui/menu_button.h"
 #include "scene/gui/panel.h"
diff --git a/editor/progress_dialog.cpp b/editor/progress_dialog.cpp
index f735ef97db..29a780961e 100644
--- a/editor/progress_dialog.cpp
+++ b/editor/progress_dialog.cpp
@@ -30,10 +30,10 @@
 
 #include "progress_dialog.h"
 
+#include "core/message_queue.h"
+#include "core/os/os.h"
 #include "editor_scale.h"
 #include "main/main.h"
-#include "message_queue.h"
-#include "os/os.h"
 
 void BackgroundProgress::_add_task(const String &p_task, const String &p_label, int p_steps) {
 
diff --git a/editor/project_export.cpp b/editor/project_export.cpp
index df79317549..aba89a87ee 100644
--- a/editor/project_export.cpp
+++ b/editor/project_export.cpp
@@ -30,17 +30,17 @@
 
 #include "project_export.h"
 
-#include "compressed_translation.h"
+#include "core/compressed_translation.h"
+#include "core/io/image_loader.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "editor_data.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "io/image_loader.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/margin_container.h"
 #include "scene/gui/scroll_container.h"
diff --git a/editor/project_manager.cpp b/editor/project_manager.cpp
index 4d25a1da5c..f494c84efa 100644
--- a/editor/project_manager.cpp
+++ b/editor/project_manager.cpp
@@ -30,18 +30,21 @@
 
 #include "project_manager.h"
 
+#include "core/io/config_file.h"
+#include "core/io/resource_saver.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/zip_io.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/translation.h"
+#include "core/version.h"
+#include "core/version_hash.gen.h"
 #include "editor_initialize_ssl.h"
 #include "editor_scale.h"
 #include "editor_settings.h"
 #include "editor_themes.h"
-#include "io/config_file.h"
-#include "io/resource_saver.h"
-#include "io/stream_peer_ssl.h"
-#include "io/zip_io.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
-#include "os/os.h"
 #include "scene/gui/center_container.h"
 #include "scene/gui/line_edit.h"
 #include "scene/gui/margin_container.h"
@@ -49,9 +52,6 @@
 #include "scene/gui/separator.h"
 #include "scene/gui/texture_rect.h"
 #include "scene/gui/tool_button.h"
-#include "translation.h"
-#include "version.h"
-#include "version_hash.gen.h"
 
 class ProjectDialog : public ConfirmationDialog {
 
diff --git a/editor/property_selector.cpp b/editor/property_selector.cpp
index dae1bdeeb0..c9eba33f35 100644
--- a/editor/property_selector.cpp
+++ b/editor/property_selector.cpp
@@ -30,8 +30,8 @@
 
 #include "property_selector.h"
 
+#include "core/os/keyboard.h"
 #include "editor_scale.h"
-#include "os/keyboard.h"
 
 void PropertySelector::_text_changed(const String &p_newtext) {
 
diff --git a/editor/pvrtc_compress.cpp b/editor/pvrtc_compress.cpp
index 57a2b0d97f..b1c847570c 100644
--- a/editor/pvrtc_compress.cpp
+++ b/editor/pvrtc_compress.cpp
@@ -30,11 +30,11 @@
 
 #include "pvrtc_compress.h"
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "editor_settings.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "scene/resources/texture.h"
 
 static void (*_base_image_compress_pvrtc2_func)(Image *) = NULL;
diff --git a/editor/pvrtc_compress.h b/editor/pvrtc_compress.h
index cdd2f0d242..0396837623 100644
--- a/editor/pvrtc_compress.h
+++ b/editor/pvrtc_compress.h
@@ -31,7 +31,7 @@
 #ifndef PVRTC_COMPRESS_H
 #define PVRTC_COMPRESS_H
 
-#include "image.h"
+#include "core/image.h"
 
 void _pvrtc_register_compressors();
 
diff --git a/editor/quick_open.cpp b/editor/quick_open.cpp
index d2101f1e00..497596a508 100644
--- a/editor/quick_open.cpp
+++ b/editor/quick_open.cpp
@@ -30,7 +30,7 @@
 
 #include "quick_open.h"
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 void EditorQuickOpen::popup(const StringName &p_base, bool p_enable_multi, bool p_add_dirs, bool p_dontclear) {
 
diff --git a/editor/quick_open.h b/editor/quick_open.h
index ecc6af0c53..ffea6b52bd 100644
--- a/editor/quick_open.h
+++ b/editor/quick_open.h
@@ -31,8 +31,8 @@
 #ifndef EDITOR_QUICK_OPEN_H
 #define EDITOR_QUICK_OPEN_H
 
+#include "core/pair.h"
 #include "editor_file_system.h"
-#include "pair.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/tree.h"
 class EditorQuickOpen : public ConfirmationDialog {
diff --git a/editor/rename_dialog.cpp b/editor/rename_dialog.cpp
index bffd7bd155..47e1ae0dab 100644
--- a/editor/rename_dialog.cpp
+++ b/editor/rename_dialog.cpp
@@ -30,12 +30,12 @@
 
 #include "rename_dialog.h"
 
+#include "core/print_string.h"
 #include "editor_node.h"
 #include "editor_settings.h"
 #include "editor_themes.h"
 #include "modules/regex/regex.h"
 #include "plugins/script_editor_plugin.h"
-#include "print_string.h"
 #include "scene/gui/control.h"
 #include "scene/gui/label.h"
 #include "scene/gui/tab_container.h"
diff --git a/editor/rename_dialog.h b/editor/rename_dialog.h
index c5ebc30c0c..fa558660a4 100644
--- a/editor/rename_dialog.h
+++ b/editor/rename_dialog.h
@@ -37,8 +37,8 @@
 #include "scene/gui/option_button.h"
 #include "scene/gui/spin_box.h"
 
+#include "core/undo_redo.h"
 #include "editor/scene_tree_editor.h"
-#include "undo_redo.h"
 
 /**
 @author Blazej Floch
diff --git a/editor/reparent_dialog.cpp b/editor/reparent_dialog.cpp
index da8bfdbbd2..3a6864b052 100644
--- a/editor/reparent_dialog.cpp
+++ b/editor/reparent_dialog.cpp
@@ -30,7 +30,7 @@
 
 #include "reparent_dialog.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/label.h"
 
diff --git a/editor/scene_tree_editor.cpp b/editor/scene_tree_editor.cpp
index a916ae23f6..a45773003a 100644
--- a/editor/scene_tree_editor.cpp
+++ b/editor/scene_tree_editor.cpp
@@ -30,11 +30,11 @@
 
 #include "scene_tree_editor.h"
 
+#include "core/message_queue.h"
+#include "core/print_string.h"
 #include "editor/plugins/animation_player_editor_plugin.h"
 #include "editor/plugins/canvas_item_editor_plugin.h"
 #include "editor_node.h"
-#include "message_queue.h"
-#include "print_string.h"
 #include "scene/gui/label.h"
 #include "scene/main/viewport.h"
 #include "scene/resources/packed_scene.h"
diff --git a/editor/scene_tree_editor.h b/editor/scene_tree_editor.h
index c4f63f5736..e575fb986a 100644
--- a/editor/scene_tree_editor.h
+++ b/editor/scene_tree_editor.h
@@ -31,12 +31,12 @@
 #ifndef SCENE_TREE_EDITOR_H
 #define SCENE_TREE_EDITOR_H
 
+#include "core/undo_redo.h"
 #include "editor_data.h"
 #include "editor_settings.h"
 #include "scene/gui/button.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/tree.h"
-#include "undo_redo.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/editor/script_create_dialog.cpp b/editor/script_create_dialog.cpp
index 6f5046616d..8c36a71d71 100644
--- a/editor/script_create_dialog.cpp
+++ b/editor/script_create_dialog.cpp
@@ -30,13 +30,13 @@
 
 #include "script_create_dialog.h"
 
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
 #include "editor/editor_node.h"
 #include "editor/editor_scale.h"
 #include "editor_file_system.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
-#include "project_settings.h"
-#include "script_language.h"
 
 void ScriptCreateDialog::_notification(int p_what) {
 
diff --git a/editor/script_editor_debugger.cpp b/editor/script_editor_debugger.cpp
index 32893cc45e..43892376b5 100644
--- a/editor/script_editor_debugger.cpp
+++ b/editor/script_editor_debugger.cpp
@@ -30,11 +30,12 @@
 
 #include "script_editor_debugger.h"
 
+#include "core/project_settings.h"
+#include "core/ustring.h"
 #include "editor_node.h"
 #include "editor_profiler.h"
 #include "editor_settings.h"
 #include "main/performance.h"
-#include "project_settings.h"
 #include "property_editor.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/label.h"
@@ -47,7 +48,6 @@
 #include "scene/gui/texture_button.h"
 #include "scene/gui/tree.h"
 #include "scene/resources/packed_scene.h"
-#include "ustring.h"
 
 class ScriptEditorDebuggerVariables : public Object {
 
diff --git a/editor/settings_config_dialog.cpp b/editor/settings_config_dialog.cpp
index 4ebba73cb3..97cdd43fee 100644
--- a/editor/settings_config_dialog.cpp
+++ b/editor/settings_config_dialog.cpp
@@ -30,11 +30,11 @@
 
 #include "settings_config_dialog.h"
 
+#include "core/os/keyboard.h"
+#include "core/project_settings.h"
 #include "editor_file_system.h"
 #include "editor_node.h"
 #include "editor_settings.h"
-#include "os/keyboard.h"
-#include "project_settings.h"
 #include "scene/gui/margin_container.h"
 #include "script_editor_debugger.h"
 
diff --git a/editor/spatial_editor_gizmos.cpp b/editor/spatial_editor_gizmos.cpp
index 50a60ac809..3097f0d0b9 100644
--- a/editor/spatial_editor_gizmos.cpp
+++ b/editor/spatial_editor_gizmos.cpp
@@ -30,8 +30,8 @@
 
 #include "spatial_editor_gizmos.h"
 
-#include "geometry.h"
-#include "quick_hull.h"
+#include "core/math/geometry.h"
+#include "core/math/quick_hull.h"
 #include "scene/3d/audio_stream_player_3d.h"
 #include "scene/3d/baked_lightmap.h"
 #include "scene/3d/collision_polygon.h"
diff --git a/main/input_default.cpp b/main/input_default.cpp
index d074e05f43..2efbb3f849 100644
--- a/main/input_default.cpp
+++ b/main/input_default.cpp
@@ -30,9 +30,9 @@
 
 #include "input_default.h"
 
-#include "default_controller_mappings.h"
-#include "input_map.h"
-#include "os/os.h"
+#include "core/input_map.h"
+#include "core/os/os.h"
+#include "main/default_controller_mappings.h"
 #include "scene/resources/texture.h"
 #include "servers/visual_server.h"
 
diff --git a/main/input_default.h b/main/input_default.h
index 2e3cae8520..4441ade04e 100644
--- a/main/input_default.h
+++ b/main/input_default.h
@@ -31,7 +31,7 @@
 #ifndef INPUT_DEFAULT_H
 #define INPUT_DEFAULT_H
 
-#include "os/input.h"
+#include "core/os/input.h"
 
 class InputDefault : public Input {
 
diff --git a/main/main.cpp b/main/main.cpp
index 96d00be737..34aca032da 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -30,37 +30,44 @@
 
 #include "main.h"
 
-#include "app_icon.gen.h"
+#include "core/input_map.h"
+#include "core/io/file_access_network.h"
+#include "core/io/file_access_pack.h"
+#include "core/io/file_access_zip.h"
+#include "core/io/ip.h"
+#include "core/io/resource_loader.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/stream_peer_tcp.h"
+#include "core/message_queue.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "core/register_core_types.h"
+#include "core/script_debugger_local.h"
+#include "core/script_debugger_remote.h"
+#include "core/script_language.h"
+#include "core/translation.h"
+#include "core/version.h"
+#include "core/version_hash.gen.h"
 #include "drivers/register_driver_types.h"
-#include "message_queue.h"
+#include "main/app_icon.gen.h"
+#include "main/input_default.h"
+#include "main/performance.h"
+#include "main/splash.gen.h"
+#include "main/splash_editor.gen.h"
+#include "main/tests/test_main.h"
+#include "main/timer_sync.h"
 #include "modules/register_module_types.h"
-#include "os/os.h"
 #include "platform/register_platform_apis.h"
-#include "project_settings.h"
-#include "scene/register_scene_types.h"
-#include "script_debugger_local.h"
-#include "script_debugger_remote.h"
-#include "servers/register_server_types.h"
-#include "splash.gen.h"
-#include "splash_editor.gen.h"
-
-#include "input_map.h"
-#include "io/resource_loader.h"
 #include "scene/main/scene_tree.h"
+#include "scene/main/viewport.h"
+#include "scene/register_scene_types.h"
+#include "scene/resources/packed_scene.h"
 #include "servers/arvr_server.h"
 #include "servers/audio_server.h"
 #include "servers/physics_2d_server.h"
 #include "servers/physics_server.h"
-
-#include "io/resource_loader.h"
-#include "script_language.h"
-
-#include "core/io/ip.h"
-#include "main/tests/test_main.h"
-#include "os/dir_access.h"
-#include "scene/main/viewport.h"
-#include "scene/resources/packed_scene.h"
+#include "servers/register_server_types.h"
 
 #ifdef TOOLS_ENABLED
 #include "editor/doc/doc_data.h"
@@ -69,21 +76,6 @@
 #include "editor/project_manager.h"
 #endif
 
-#include "io/file_access_network.h"
-#include "servers/physics_2d_server.h"
-
-#include "core/io/file_access_pack.h"
-#include "core/io/file_access_zip.h"
-#include "core/io/stream_peer_ssl.h"
-#include "core/io/stream_peer_tcp.h"
-#include "main/input_default.h"
-#include "performance.h"
-#include "translation.h"
-#include "version.h"
-#include "version_hash.gen.h"
-
-#include "main/timer_sync.h"
-
 static ProjectSettings *globals = NULL;
 static Engine *engine = NULL;
 static InputMap *input_map = NULL;
diff --git a/main/main.h b/main/main.h
index c20592bf3b..bd56e21d94 100644
--- a/main/main.h
+++ b/main/main.h
@@ -35,9 +35,9 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
+#include "core/error_list.h"
 #include "core/os/thread.h"
-#include "error_list.h"
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 class Main {
 
diff --git a/main/main_builders.py b/main/main_builders.py
index 6d45768493..038a7d17f5 100644
--- a/main/main_builders.py
+++ b/main/main_builders.py
@@ -69,8 +69,8 @@ def make_default_controller_mappings(target, source, env):
     g = open(dst, "w")
 
     g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
-    g.write("#include \"default_controller_mappings.h\"\n")
-    g.write("#include \"typedefs.h\"\n")
+    g.write("#include \"core/typedefs.h\"\n")
+    g.write("#include \"main/default_controller_mappings.h\"\n")
 
     # ensure mappings have a consistent order
     platform_mappings = OrderedDict()
diff --git a/main/performance.cpp b/main/performance.cpp
index 70e0a5f7aa..aab3a8646f 100644
--- a/main/performance.cpp
+++ b/main/performance.cpp
@@ -29,13 +29,15 @@
 /*************************************************************************/
 
 #include "performance.h"
-#include "message_queue.h"
-#include "os/os.h"
+
+#include "core/message_queue.h"
+#include "core/os/os.h"
 #include "scene/main/scene_tree.h"
 #include "servers/audio_server.h"
 #include "servers/physics_2d_server.h"
 #include "servers/physics_server.h"
 #include "servers/visual_server.h"
+
 Performance *Performance::singleton = NULL;
 
 void Performance::_bind_methods() {
diff --git a/main/performance.h b/main/performance.h
index de00df5ff9..41822562c5 100644
--- a/main/performance.h
+++ b/main/performance.h
@@ -31,7 +31,7 @@
 #ifndef PERFORMANCE_H
 #define PERFORMANCE_H
 
-#include "object.h"
+#include "core/object.h"
 
 #define PERF_WARN_OFFLINE_FUNCTION
 #define PERF_WARN_PROCESS_SYNC
diff --git a/main/tests/test_gdscript.cpp b/main/tests/test_gdscript.cpp
index 0a9d03c1b7..412e809732 100644
--- a/main/tests/test_gdscript.cpp
+++ b/main/tests/test_gdscript.cpp
@@ -30,9 +30,9 @@
 
 #include "test_gdscript.h"
 
-#include "os/file_access.h"
-#include "os/main_loop.h"
-#include "os/os.h"
+#include "core/os/file_access.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
 
 #ifdef GDSCRIPT_ENABLED
 
diff --git a/main/tests/test_gdscript.h b/main/tests/test_gdscript.h
index 91e0be1238..0a052c8db5 100644
--- a/main/tests/test_gdscript.h
+++ b/main/tests/test_gdscript.h
@@ -31,7 +31,7 @@
 #ifndef TEST_GDSCRIPT_H
 #define TEST_GDSCRIPT_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestGDScript {
 
diff --git a/main/tests/test_gui.cpp b/main/tests/test_gui.cpp
index 305b749717..9b08ac4937 100644
--- a/main/tests/test_gui.cpp
+++ b/main/tests/test_gui.cpp
@@ -32,9 +32,9 @@
 
 #include "test_gui.h"
 
-#include "io/image_loader.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/io/image_loader.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "scene/2d/sprite.h"
 #include "scene/gui/button.h"
 #include "scene/gui/control.h"
diff --git a/main/tests/test_gui.h b/main/tests/test_gui.h
index 3ed9dae522..25dfa3bc2b 100644
--- a/main/tests/test_gui.h
+++ b/main/tests/test_gui.h
@@ -31,7 +31,7 @@
 #ifndef TEST_GUI_H
 #define TEST_GUI_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/main/tests/test_image.cpp b/main/tests/test_image.cpp
index cb87458a93..979e590ab8 100644
--- a/main/tests/test_image.cpp
+++ b/main/tests/test_image.cpp
@@ -30,10 +30,10 @@
 
 #include "test_image.h"
 
-#include "io/image_loader.h"
-#include "math_funcs.h"
-#include "os/main_loop.h"
-#include "print_string.h"
+#include "core/io/image_loader.h"
+#include "core/math/math_funcs.h"
+#include "core/os/main_loop.h"
+#include "core/print_string.h"
 
 namespace TestImage {
 
diff --git a/main/tests/test_image.h b/main/tests/test_image.h
index d45b4e4e15..381edf7ef9 100644
--- a/main/tests/test_image.h
+++ b/main/tests/test_image.h
@@ -35,7 +35,7 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestImage {
 
diff --git a/main/tests/test_io.cpp b/main/tests/test_io.cpp
index 4f98955995..c1b4b8af9b 100644
--- a/main/tests/test_io.cpp
+++ b/main/tests/test_io.cpp
@@ -32,16 +32,16 @@
 
 #ifdef MINIZIP_ENABLED
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/dir_access.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "core/project_settings.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/dir_access.h"
-#include "os/main_loop.h"
-#include "os/os.h"
-#include "print_string.h"
 #include "scene/resources/texture.h"
 
-#include "io/file_access_memory.h"
+#include "core/io/file_access_memory.h"
 
 namespace TestIO {
 
diff --git a/main/tests/test_io.h b/main/tests/test_io.h
index 76567829e7..ffebd05160 100644
--- a/main/tests/test_io.h
+++ b/main/tests/test_io.h
@@ -35,7 +35,7 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestIO {
 
diff --git a/main/tests/test_main.cpp b/main/tests/test_main.cpp
index cbc1107acb..cd70b95a28 100644
--- a/main/tests/test_main.cpp
+++ b/main/tests/test_main.cpp
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "list.h"
-#include "os/main_loop.h"
+#include "core/list.h"
+#include "core/os/main_loop.h"
 
 #ifdef DEBUG_ENABLED
 
diff --git a/main/tests/test_main.h b/main/tests/test_main.h
index d319391070..55ab4daeb8 100644
--- a/main/tests/test_main.h
+++ b/main/tests/test_main.h
@@ -31,8 +31,8 @@
 #ifndef TEST_MAIN_H
 #define TEST_MAIN_H
 
-#include "list.h"
-#include "ustring.h"
+#include "core/list.h"
+#include "core/ustring.h"
 
 const char **tests_get_names();
 MainLoop *test_main(String p_test, const List<String> &p_args);
diff --git a/main/tests/test_math.cpp b/main/tests/test_math.cpp
index 1a72416d6a..a48fdbe4e3 100644
--- a/main/tests/test_math.cpp
+++ b/main/tests/test_math.cpp
@@ -30,22 +30,22 @@
 
 #include "test_math.h"
 
-#include "camera_matrix.h"
-#include "math_funcs.h"
-#include "matrix3.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/math/camera_matrix.h"
+#include "core/math/math_funcs.h"
+#include "core/math/matrix3.h"
+#include "core/math/transform.h"
+#include "core/os/file_access.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/ustring.h"
+#include "core/variant.h"
+#include "core/vmap.h"
 #include "scene/main/node.h"
 #include "scene/resources/texture.h"
 #include "servers/visual/shader_language.h"
-#include "transform.h"
-#include "ustring.h"
-#include "variant.h"
-#include "vmap.h"
 
-#include "method_ptrcall.h"
+#include "core/method_ptrcall.h"
 
 namespace TestMath {
 
diff --git a/main/tests/test_math.h b/main/tests/test_math.h
index 26a33aa164..2d0c6c461f 100644
--- a/main/tests/test_math.h
+++ b/main/tests/test_math.h
@@ -31,7 +31,7 @@
 #ifndef TEST_MATH_H
 #define TEST_MATH_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestMath {
 
diff --git a/main/tests/test_oa_hash_map.h b/main/tests/test_oa_hash_map.h
index a63da537d8..677021f933 100644
--- a/main/tests/test_oa_hash_map.h
+++ b/main/tests/test_oa_hash_map.h
@@ -31,7 +31,7 @@
 #ifndef TEST_OA_HASH_MAP_H
 #define TEST_OA_HASH_MAP_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestOAHashMap {
 
diff --git a/main/tests/test_ordered_hash_map.cpp b/main/tests/test_ordered_hash_map.cpp
index 668a8788ff..cad52ceedf 100644
--- a/main/tests/test_ordered_hash_map.cpp
+++ b/main/tests/test_ordered_hash_map.cpp
@@ -28,10 +28,10 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "ordered_hash_map.h"
-#include "os/os.h"
-#include "pair.h"
-#include "vector.h"
+#include "core/ordered_hash_map.h"
+#include "core/os/os.h"
+#include "core/pair.h"
+#include "core/vector.h"
 
 namespace TestOrderedHashMap {
 
@@ -168,4 +168,4 @@ MainLoop *test() {
 
 	return NULL;
 }
-} // namespace TestOrderedHashMap
\ No newline at end of file
+} // namespace TestOrderedHashMap
diff --git a/main/tests/test_physics.cpp b/main/tests/test_physics.cpp
index 99c8fce70e..c869b268b0 100644
--- a/main/tests/test_physics.cpp
+++ b/main/tests/test_physics.cpp
@@ -30,12 +30,12 @@
 
 #include "test_physics.h"
 
-#include "map.h"
-#include "math_funcs.h"
-#include "os/main_loop.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "quick_hull.h"
+#include "core/map.h"
+#include "core/math/math_funcs.h"
+#include "core/math/quick_hull.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "servers/physics_server.h"
 #include "servers/visual_server.h"
 
diff --git a/main/tests/test_physics.h b/main/tests/test_physics.h
index 4d62f3a0cf..c260bf9fcc 100644
--- a/main/tests/test_physics.h
+++ b/main/tests/test_physics.h
@@ -35,7 +35,7 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestPhysics {
 
diff --git a/main/tests/test_physics_2d.cpp b/main/tests/test_physics_2d.cpp
index 482a858650..8245ee276e 100644
--- a/main/tests/test_physics_2d.cpp
+++ b/main/tests/test_physics_2d.cpp
@@ -30,10 +30,10 @@
 
 #include "test_physics_2d.h"
 
-#include "map.h"
-#include "os/main_loop.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/map.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "scene/resources/texture.h"
 #include "servers/physics_2d_server.h"
 #include "servers/visual_server.h"
diff --git a/main/tests/test_physics_2d.h b/main/tests/test_physics_2d.h
index 1031aa7f71..52669777c0 100644
--- a/main/tests/test_physics_2d.h
+++ b/main/tests/test_physics_2d.h
@@ -31,7 +31,7 @@
 #ifndef TEST_PHYSICS_2D_H
 #define TEST_PHYSICS_2D_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestPhysics2D {
 
diff --git a/main/tests/test_render.cpp b/main/tests/test_render.cpp
index 9340e69bc5..ebf6d363be 100644
--- a/main/tests/test_render.cpp
+++ b/main/tests/test_render.cpp
@@ -30,12 +30,12 @@
 
 #include "test_render.h"
 
-#include "math_funcs.h"
-#include "os/keyboard.h"
-#include "os/main_loop.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "quick_hull.h"
+#include "core/math/math_funcs.h"
+#include "core/math/quick_hull.h"
+#include "core/os/keyboard.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "servers/visual_server.h"
 
 #define OBJECT_COUNT 50
diff --git a/main/tests/test_render.h b/main/tests/test_render.h
index 9084b57067..717074021c 100644
--- a/main/tests/test_render.h
+++ b/main/tests/test_render.h
@@ -35,7 +35,7 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestRender {
 
diff --git a/main/tests/test_shader_lang.cpp b/main/tests/test_shader_lang.cpp
index 7103b436e1..2cd39d0208 100644
--- a/main/tests/test_shader_lang.cpp
+++ b/main/tests/test_shader_lang.cpp
@@ -30,11 +30,11 @@
 
 #include "test_shader_lang.h"
 
-#include "os/file_access.h"
-#include "os/main_loop.h"
-#include "os/os.h"
+#include "core/os/file_access.h"
+#include "core/os/main_loop.h"
+#include "core/os/os.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 #include "scene/gui/control.h"
 #include "scene/gui/text_edit.h"
 #include "servers/visual/shader_language.h"
diff --git a/main/tests/test_shader_lang.h b/main/tests/test_shader_lang.h
index 235bf10463..e99858fdc6 100644
--- a/main/tests/test_shader_lang.h
+++ b/main/tests/test_shader_lang.h
@@ -31,7 +31,7 @@
 #ifndef TEST_SHADER_LANG_H
 #define TEST_SHADER_LANG_H
 
-#include "os/main_loop.h"
+#include "core/os/main_loop.h"
 
 namespace TestShaderLang {
 
diff --git a/main/tests/test_string.cpp b/main/tests/test_string.cpp
index af948556c4..74157d63c9 100644
--- a/main/tests/test_string.cpp
+++ b/main/tests/test_string.cpp
@@ -28,11 +28,11 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "ustring.h"
+#include "core/ustring.h"
 #include <wchar.h>
-//#include "math_funcs.h"
+//#include "core/math/math_funcs.h"
 #include "core/io/ip_address.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include <stdio.h>
 
 #include "test_string.h"
diff --git a/main/tests/test_string.h b/main/tests/test_string.h
index 110e115309..e293e96604 100644
--- a/main/tests/test_string.h
+++ b/main/tests/test_string.h
@@ -31,8 +31,8 @@
 #ifndef TEST_STRING_H
 #define TEST_STRING_H
 
-#include "os/main_loop.h"
-#include "ustring.h"
+#include "core/os/main_loop.h"
+#include "core/ustring.h"
 
 namespace TestString {
 
diff --git a/modules/bmp/image_loader_bmp.h b/modules/bmp/image_loader_bmp.h
index 3fa7481287..e0e50859fc 100644
--- a/modules/bmp/image_loader_bmp.h
+++ b/modules/bmp/image_loader_bmp.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_BMP_H
 #define IMAGE_LOADER_BMP_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 class ImageLoaderBMP : public ImageFormatLoader {
 protected:
diff --git a/modules/bullet/btRayShape.cpp b/modules/bullet/btRayShape.cpp
index 8707096038..6cc63d79ce 100644
--- a/modules/bullet/btRayShape.cpp
+++ b/modules/bullet/btRayShape.cpp
@@ -30,7 +30,7 @@
 
 #include "btRayShape.h"
 
-#include "math/math_funcs.h"
+#include "core/math/math_funcs.h"
 
 #include <LinearMath/btAabbUtil2.h>
 
diff --git a/modules/bullet/bullet_physics_server.cpp b/modules/bullet/bullet_physics_server.cpp
index dbd27a3564..53a38967c3 100644
--- a/modules/bullet/bullet_physics_server.cpp
+++ b/modules/bullet/bullet_physics_server.cpp
@@ -31,8 +31,8 @@
 #include "bullet_physics_server.h"
 
 #include "bullet_utilities.h"
-#include "class_db.h"
 #include "cone_twist_joint_bullet.h"
+#include "core/class_db.h"
 #include "core/error_macros.h"
 #include "core/ustring.h"
 #include "generic_6dof_joint_bullet.h"
diff --git a/modules/bullet/bullet_physics_server.h b/modules/bullet/bullet_physics_server.h
index 87719383f8..4c52cace67 100644
--- a/modules/bullet/bullet_physics_server.h
+++ b/modules/bullet/bullet_physics_server.h
@@ -32,8 +32,8 @@
 #define BULLET_PHYSICS_SERVER_H
 
 #include "area_bullet.h"
+#include "core/rid.h"
 #include "joint_bullet.h"
-#include "rid.h"
 #include "rigid_body_bullet.h"
 #include "servers/physics_server.h"
 #include "shape_bullet.h"
diff --git a/modules/bullet/collision_object_bullet.h b/modules/bullet/collision_object_bullet.h
index d14fdd3301..ea06cecb17 100644
--- a/modules/bullet/collision_object_bullet.h
+++ b/modules/bullet/collision_object_bullet.h
@@ -31,11 +31,11 @@
 #ifndef COLLISION_OBJECT_BULLET_H
 #define COLLISION_OBJECT_BULLET_H
 
+#include "core/math/transform.h"
+#include "core/math/vector3.h"
+#include "core/object.h"
 #include "core/vset.h"
-#include "object.h"
 #include "shape_owner_bullet.h"
-#include "transform.h"
-#include "vector3.h"
 
 #include <LinearMath/btTransform.h>
 
diff --git a/modules/bullet/godot_collision_dispatcher.h b/modules/bullet/godot_collision_dispatcher.h
index 2e5a6c2732..1faaa68626 100644
--- a/modules/bullet/godot_collision_dispatcher.h
+++ b/modules/bullet/godot_collision_dispatcher.h
@@ -31,7 +31,7 @@
 #ifndef GODOT_COLLISION_DISPATCHER_H
 #define GODOT_COLLISION_DISPATCHER_H
 
-#include "int_types.h"
+#include "core/int_types.h"
 
 #include <btBulletDynamicsCommon.h>
 
diff --git a/modules/bullet/register_types.cpp b/modules/bullet/register_types.cpp
index a76b0438b4..31e5f6784e 100644
--- a/modules/bullet/register_types.cpp
+++ b/modules/bullet/register_types.cpp
@@ -31,8 +31,8 @@
 #include "register_types.h"
 
 #include "bullet_physics_server.h"
-#include "class_db.h"
-#include "project_settings.h"
+#include "core/class_db.h"
+#include "core/project_settings.h"
 
 /**
 	@author AndreaCatania
diff --git a/modules/bullet/shape_bullet.h b/modules/bullet/shape_bullet.h
index 638e044e6a..9a1c8f5bfa 100644
--- a/modules/bullet/shape_bullet.h
+++ b/modules/bullet/shape_bullet.h
@@ -31,8 +31,8 @@
 #ifndef SHAPE_BULLET_H
 #define SHAPE_BULLET_H
 
+#include "core/math/geometry.h"
 #include "core/variant.h"
-#include "geometry.h"
 #include "rid_bullet.h"
 #include "servers/physics_server.h"
 
diff --git a/modules/bullet/space_bullet.cpp b/modules/bullet/space_bullet.cpp
index 6d00b3d1d8..5b220e1039 100644
--- a/modules/bullet/space_bullet.cpp
+++ b/modules/bullet/space_bullet.cpp
@@ -34,13 +34,13 @@
 #include "bullet_types_converter.h"
 #include "bullet_utilities.h"
 #include "constraint_bullet.h"
+#include "core/project_settings.h"
+#include "core/ustring.h"
 #include "godot_collision_configuration.h"
 #include "godot_collision_dispatcher.h"
-#include "project_settings.h"
 #include "rigid_body_bullet.h"
 #include "servers/physics_server.h"
 #include "soft_body_bullet.h"
-#include "ustring.h"
 
 #include <BulletCollision/CollisionDispatch/btCollisionObject.h>
 #include <BulletCollision/CollisionDispatch/btGhostObject.h>
diff --git a/modules/csg/csg.cpp b/modules/csg/csg.cpp
index 87c2caec0d..0184018274 100644
--- a/modules/csg/csg.cpp
+++ b/modules/csg/csg.cpp
@@ -29,10 +29,10 @@
 /*************************************************************************/
 
 #include "csg.h"
-#include "face3.h"
-#include "geometry.h"
-#include "os/os.h"
-#include "sort.h"
+#include "core/math/face3.h"
+#include "core/math/geometry.h"
+#include "core/os/os.h"
+#include "core/sort.h"
 #include "thirdparty/misc/triangulator.h"
 
 void CSGBrush::clear() {
diff --git a/modules/csg/csg.h b/modules/csg/csg.h
index 2e07c23e28..5d6432eca8 100644
--- a/modules/csg/csg.h
+++ b/modules/csg/csg.h
@@ -31,15 +31,15 @@
 #ifndef CSG_H
 #define CSG_H
 
-#include "aabb.h"
-#include "dvector.h"
-#include "map.h"
-#include "oa_hash_map.h"
-#include "plane.h"
-#include "rect2.h"
+#include "core/dvector.h"
+#include "core/map.h"
+#include "core/math/aabb.h"
+#include "core/math/plane.h"
+#include "core/math/rect2.h"
+#include "core/math/transform.h"
+#include "core/math/vector3.h"
+#include "core/oa_hash_map.h"
 #include "scene/resources/material.h"
-#include "transform.h"
-#include "vector3.h"
 
 struct CSGBrush {
 
diff --git a/modules/cvtt/image_compress_cvtt.cpp b/modules/cvtt/image_compress_cvtt.cpp
index af92861352..17af6bff09 100644
--- a/modules/cvtt/image_compress_cvtt.cpp
+++ b/modules/cvtt/image_compress_cvtt.cpp
@@ -30,9 +30,9 @@
 
 #include "image_compress_cvtt.h"
 
-#include "os/os.h"
-#include "os/thread.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/os/thread.h"
+#include "core/print_string.h"
 
 #include <ConvectionKernels.h>
 
diff --git a/modules/cvtt/image_compress_cvtt.h b/modules/cvtt/image_compress_cvtt.h
index 0e18b247e5..fe912ad3bb 100644
--- a/modules/cvtt/image_compress_cvtt.h
+++ b/modules/cvtt/image_compress_cvtt.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_COMPRESS_CVTT_H
 #define IMAGE_COMPRESS_CVTT_H
 
-#include "image.h"
+#include "core/image.h"
 
 void image_compress_cvtt(Image *p_image, float p_lossy_quality, Image::CompressSource p_source);
 void image_decompress_cvtt(Image *p_image);
diff --git a/modules/dds/texture_loader_dds.cpp b/modules/dds/texture_loader_dds.cpp
index 3cb24d0407..ff15aaa735 100644
--- a/modules/dds/texture_loader_dds.cpp
+++ b/modules/dds/texture_loader_dds.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "texture_loader_dds.h"
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 enum {
 	DDS_MAGIC = 0x20534444,
diff --git a/modules/dds/texture_loader_dds.h b/modules/dds/texture_loader_dds.h
index 14d99ff506..4e2593c744 100644
--- a/modules/dds/texture_loader_dds.h
+++ b/modules/dds/texture_loader_dds.h
@@ -31,7 +31,7 @@
 #ifndef TEXTURE_LOADER_DDS_H
 #define TEXTURE_LOADER_DDS_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "scene/resources/texture.h"
 
 class ResourceFormatDDS : public ResourceFormatLoader {
diff --git a/modules/enet/networked_multiplayer_enet.cpp b/modules/enet/networked_multiplayer_enet.cpp
index 25b7f2472d..d99b28d178 100644
--- a/modules/enet/networked_multiplayer_enet.cpp
+++ b/modules/enet/networked_multiplayer_enet.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "networked_multiplayer_enet.h"
-#include "io/ip.h"
-#include "io/marshalls.h"
-#include "os/os.h"
+#include "core/io/ip.h"
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
 
 void NetworkedMultiplayerENet::set_transfer_mode(TransferMode p_mode) {
 
diff --git a/modules/enet/networked_multiplayer_enet.h b/modules/enet/networked_multiplayer_enet.h
index 705807d429..a2b35f2395 100644
--- a/modules/enet/networked_multiplayer_enet.h
+++ b/modules/enet/networked_multiplayer_enet.h
@@ -31,8 +31,8 @@
 #ifndef NETWORKED_MULTIPLAYER_ENET_H
 #define NETWORKED_MULTIPLAYER_ENET_H
 
-#include "io/compression.h"
-#include "io/networked_multiplayer_peer.h"
+#include "core/io/compression.h"
+#include "core/io/networked_multiplayer_peer.h"
 
 #include <enet/enet.h>
 
diff --git a/modules/enet/register_types.cpp b/modules/enet/register_types.cpp
index cabaeb692a..cde70e8d5c 100644
--- a/modules/enet/register_types.cpp
+++ b/modules/enet/register_types.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "register_types.h"
-#include "error_macros.h"
+#include "core/error_macros.h"
 #include "networked_multiplayer_enet.h"
 
 static bool enet_ok = false;
diff --git a/modules/etc/image_etc.cpp b/modules/etc/image_etc.cpp
index f5c817c816..a534aec11b 100644
--- a/modules/etc/image_etc.cpp
+++ b/modules/etc/image_etc.cpp
@@ -31,10 +31,10 @@
 #include "image_etc.h"
 #include "Etc.h"
 #include "EtcFilter.h"
-#include "image.h"
-#include "os/copymem.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/image.h"
+#include "core/os/copymem.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 static Image::Format _get_etc2_mode(Image::DetectChannels format) {
 	switch (format) {
diff --git a/modules/etc/texture_loader_pkm.cpp b/modules/etc/texture_loader_pkm.cpp
index ac89259c9b..3041dde876 100644
--- a/modules/etc/texture_loader_pkm.cpp
+++ b/modules/etc/texture_loader_pkm.cpp
@@ -30,7 +30,7 @@
 
 #include "texture_loader_pkm.h"
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 #include <string.h>
 
 struct ETC1Header {
diff --git a/modules/etc/texture_loader_pkm.h b/modules/etc/texture_loader_pkm.h
index 3c6d9180bd..b5a95767c7 100644
--- a/modules/etc/texture_loader_pkm.h
+++ b/modules/etc/texture_loader_pkm.h
@@ -31,7 +31,7 @@
 #ifndef TEXTURE_LOADER_PKM_H
 #define TEXTURE_LOADER_PKM_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "scene/resources/texture.h"
 
 class ResourceFormatPKM : public ResourceFormatLoader {
diff --git a/modules/gdnative/gdnative.cpp b/modules/gdnative/gdnative.cpp
index 0acd6c27d8..2a980c2dc8 100644
--- a/modules/gdnative/gdnative.cpp
+++ b/modules/gdnative/gdnative.cpp
@@ -30,11 +30,11 @@
 
 #include "gdnative.h"
 
-#include "global_constants.h"
-#include "io/file_access_encrypted.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/global_constants.h"
+#include "core/io/file_access_encrypted.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include "scene/main/scene_tree.h"
 
diff --git a/modules/gdnative/gdnative.h b/modules/gdnative/gdnative.h
index 148f85723e..c5364a72ac 100644
--- a/modules/gdnative/gdnative.h
+++ b/modules/gdnative/gdnative.h
@@ -31,15 +31,15 @@
 #ifndef GDNATIVE_H
 #define GDNATIVE_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/thread_safe.h"
-#include "resource.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/thread_safe.h"
+#include "core/resource.h"
 
 #include "gdnative/gdnative.h"
 #include "gdnative_api_struct.gen.h"
 
-#include "io/config_file.h"
+#include "core/io/config_file.h"
 
 class GDNativeLibraryResourceLoader;
 class GDNative;
diff --git a/modules/gdnative/gdnative/gdnative.cpp b/modules/gdnative/gdnative/gdnative.cpp
index 73fca655a8..8f10f116e6 100644
--- a/modules/gdnative/gdnative/gdnative.cpp
+++ b/modules/gdnative/gdnative/gdnative.cpp
@@ -30,12 +30,12 @@
 
 #include "gdnative/gdnative.h"
 
-#include "class_db.h"
-#include "engine.h"
-#include "error_macros.h"
-#include "global_constants.h"
-#include "os/os.h"
-#include "variant.h"
+#include "core/class_db.h"
+#include "core/engine.h"
+#include "core/error_macros.h"
+#include "core/global_constants.h"
+#include "core/os/os.h"
+#include "core/variant.h"
 
 #include "modules/gdnative/gdnative.h"
 
diff --git a/modules/gdnative/gdnative/pool_arrays.cpp b/modules/gdnative/gdnative/pool_arrays.cpp
index 2b6b7a823a..d55d81b5b6 100644
--- a/modules/gdnative/gdnative/pool_arrays.cpp
+++ b/modules/gdnative/gdnative/pool_arrays.cpp
@@ -30,9 +30,9 @@
 
 #include "gdnative/pool_arrays.h"
 
-#include "array.h"
+#include "core/array.h"
+#include "core/dvector.h"
 #include "core/variant.h"
-#include "dvector.h"
 
 #include "core/color.h"
 #include "core/math/vector2.h"
diff --git a/modules/gdnative/nativescript/api_generator.cpp b/modules/gdnative/nativescript/api_generator.cpp
index 70ca8d68b8..0983c12619 100644
--- a/modules/gdnative/nativescript/api_generator.cpp
+++ b/modules/gdnative/nativescript/api_generator.cpp
@@ -35,8 +35,8 @@
 #include "core/class_db.h"
 #include "core/engine.h"
 #include "core/global_constants.h"
+#include "core/os/file_access.h"
 #include "core/pair.h"
-#include "os/file_access.h"
 
 // helper stuff
 
diff --git a/modules/gdnative/nativescript/godot_nativescript.cpp b/modules/gdnative/nativescript/godot_nativescript.cpp
index 72606c8340..c39efe126f 100644
--- a/modules/gdnative/nativescript/godot_nativescript.cpp
+++ b/modules/gdnative/nativescript/godot_nativescript.cpp
@@ -30,12 +30,12 @@
 
 #include "nativescript/godot_nativescript.h"
 
-#include "class_db.h"
-#include "error_macros.h"
+#include "core/class_db.h"
+#include "core/error_macros.h"
+#include "core/global_constants.h"
+#include "core/project_settings.h"
+#include "core/variant.h"
 #include "gdnative/gdnative.h"
-#include "global_constants.h"
-#include "project_settings.h"
-#include "variant.h"
 
 #include "nativescript.h"
 
diff --git a/modules/gdnative/nativescript/nativescript.cpp b/modules/gdnative/nativescript/nativescript.cpp
index 3f88fabebd..ea968fb0b1 100644
--- a/modules/gdnative/nativescript/nativescript.cpp
+++ b/modules/gdnative/nativescript/nativescript.cpp
@@ -33,10 +33,10 @@
 #include "gdnative/gdnative.h"
 
 #include "core/global_constants.h"
+#include "core/io/file_access_encrypted.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "core/project_settings.h"
-#include "io/file_access_encrypted.h"
-#include "os/file_access.h"
-#include "os/os.h"
 
 #include "scene/main/scene_tree.h"
 #include "scene/resources/scene_format_text.h"
@@ -44,7 +44,7 @@
 #include <stdlib.h>
 
 #ifndef NO_THREADS
-#include "os/thread.h"
+#include "core/os/thread.h"
 #endif
 
 #if defined(TOOLS_ENABLED) && defined(DEBUG_METHODS_ENABLED)
diff --git a/modules/gdnative/nativescript/nativescript.h b/modules/gdnative/nativescript/nativescript.h
index ebfe36fd94..a96fe5c5e3 100644
--- a/modules/gdnative/nativescript/nativescript.h
+++ b/modules/gdnative/nativescript/nativescript.h
@@ -31,21 +31,21 @@
 #ifndef NATIVE_SCRIPT_H
 #define NATIVE_SCRIPT_H
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/oa_hash_map.h"
+#include "core/ordered_hash_map.h"
+#include "core/os/thread_safe.h"
 #include "core/resource.h"
 #include "core/script_language.h"
 #include "core/self_list.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "oa_hash_map.h"
-#include "ordered_hash_map.h"
-#include "os/thread_safe.h"
 #include "scene/main/node.h"
 
 #include "modules/gdnative/gdnative.h"
 #include <nativescript/godot_nativescript.h>
 
 #ifndef NO_THREADS
-#include "os/mutex.h"
+#include "core/os/mutex.h"
 #endif
 
 struct NativeScriptDesc {
diff --git a/modules/gdnative/nativescript/register_types.cpp b/modules/gdnative/nativescript/register_types.cpp
index 9a0e764391..4433c0a638 100644
--- a/modules/gdnative/nativescript/register_types.cpp
+++ b/modules/gdnative/nativescript/register_types.cpp
@@ -30,8 +30,8 @@
 
 #include "register_types.h"
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
 
 #include "nativescript.h"
 
diff --git a/modules/gdnative/pluginscript/pluginscript_loader.cpp b/modules/gdnative/pluginscript/pluginscript_loader.cpp
index acba297fa0..52d5b2b595 100644
--- a/modules/gdnative/pluginscript/pluginscript_loader.cpp
+++ b/modules/gdnative/pluginscript/pluginscript_loader.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 // Godot imports
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 // Pythonscript imports
 #include "pluginscript_language.h"
 #include "pluginscript_loader.h"
diff --git a/modules/gdnative/pluginscript/pluginscript_loader.h b/modules/gdnative/pluginscript/pluginscript_loader.h
index 9276ea3ef9..5c17bb932e 100644
--- a/modules/gdnative/pluginscript/pluginscript_loader.h
+++ b/modules/gdnative/pluginscript/pluginscript_loader.h
@@ -32,9 +32,9 @@
 #define PYTHONSCRIPT_PY_LOADER_H
 
 // Godot imports
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
 #include "core/script_language.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
 
 class PluginScriptLanguage;
 
diff --git a/modules/gdnative/pluginscript/register_types.cpp b/modules/gdnative/pluginscript/register_types.cpp
index 924abf29df..e677bc9867 100644
--- a/modules/gdnative/pluginscript/register_types.cpp
+++ b/modules/gdnative/pluginscript/register_types.cpp
@@ -30,11 +30,11 @@
 
 #include "register_types.h"
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
 #include "core/project_settings.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/dir_access.h"
-#include "os/os.h"
 #include "scene/main/scene_tree.h"
 
 #include "pluginscript_language.h"
diff --git a/modules/gdnative/register_types.cpp b/modules/gdnative/register_types.cpp
index ae1a218392..48c0fc8aef 100644
--- a/modules/gdnative/register_types.cpp
+++ b/modules/gdnative/register_types.cpp
@@ -33,8 +33,8 @@
 
 #include "gdnative.h"
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
 
 #include "arvr/register_types.h"
 #include "nativescript/register_types.h"
diff --git a/modules/gdscript/gdscript.cpp b/modules/gdscript/gdscript.cpp
index cf4fe29c86..737374af4b 100644
--- a/modules/gdscript/gdscript.cpp
+++ b/modules/gdscript/gdscript.cpp
@@ -30,13 +30,13 @@
 
 #include "gdscript.h"
 
-#include "engine.h"
+#include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/io/file_access_encrypted.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "gdscript_compiler.h"
-#include "global_constants.h"
-#include "io/file_access_encrypted.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
 
 ///////////////////////////
 
diff --git a/modules/gdscript/gdscript.h b/modules/gdscript/gdscript.h
index d400230f43..85379a8902 100644
--- a/modules/gdscript/gdscript.h
+++ b/modules/gdscript/gdscript.h
@@ -31,10 +31,10 @@
 #ifndef GDSCRIPT_H
 #define GDSCRIPT_H
 
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/script_language.h"
 #include "gdscript_function.h"
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "script_language.h"
 
 class GDScriptNativeClass : public Reference {
 
diff --git a/modules/gdscript/gdscript_editor.cpp b/modules/gdscript/gdscript_editor.cpp
index d3068fb6d0..59b0c4d492 100644
--- a/modules/gdscript/gdscript_editor.cpp
+++ b/modules/gdscript/gdscript_editor.cpp
@@ -31,16 +31,16 @@
 #include "gdscript.h"
 
 #include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/os/file_access.h"
 #include "editor/editor_settings.h"
 #include "gdscript_compiler.h"
-#include "global_constants.h"
-#include "os/file_access.h"
 
 #ifdef TOOLS_ENABLED
+#include "core/engine.h"
 #include "core/reference.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_settings.h"
-#include "engine.h"
 #endif
 
 void GDScriptLanguage::get_comment_delimiters(List<String> *p_delimiters) const {
diff --git a/modules/gdscript/gdscript_function.cpp b/modules/gdscript/gdscript_function.cpp
index d615b58b24..abd08d13ff 100644
--- a/modules/gdscript/gdscript_function.cpp
+++ b/modules/gdscript/gdscript_function.cpp
@@ -30,9 +30,9 @@
 
 #include "gdscript_function.h"
 
+#include "core/os/os.h"
 #include "gdscript.h"
 #include "gdscript_functions.h"
-#include "os/os.h"
 
 Variant *GDScriptFunction::_get_variant(int p_address, GDScriptInstance *p_instance, GDScript *p_script, Variant &self, Variant *p_stack, String &r_error) const {
 
diff --git a/modules/gdscript/gdscript_function.h b/modules/gdscript/gdscript_function.h
index 633cca35d3..bfb6d673f1 100644
--- a/modules/gdscript/gdscript_function.h
+++ b/modules/gdscript/gdscript_function.h
@@ -31,13 +31,13 @@
 #ifndef GDSCRIPT_FUNCTION_H
 #define GDSCRIPT_FUNCTION_H
 
-#include "os/thread.h"
-#include "pair.h"
-#include "reference.h"
-#include "script_language.h"
-#include "self_list.h"
-#include "string_db.h"
-#include "variant.h"
+#include "core/os/thread.h"
+#include "core/pair.h"
+#include "core/reference.h"
+#include "core/script_language.h"
+#include "core/self_list.h"
+#include "core/string_db.h"
+#include "core/variant.h"
 
 class GDScriptInstance;
 class GDScript;
diff --git a/modules/gdscript/gdscript_functions.cpp b/modules/gdscript/gdscript_functions.cpp
index 03e7740887..c469defb01 100644
--- a/modules/gdscript/gdscript_functions.cpp
+++ b/modules/gdscript/gdscript_functions.cpp
@@ -30,15 +30,15 @@
 
 #include "gdscript_functions.h"
 
-#include "class_db.h"
-#include "func_ref.h"
+#include "core/class_db.h"
+#include "core/func_ref.h"
+#include "core/io/json.h"
+#include "core/io/marshalls.h"
+#include "core/math/math_funcs.h"
+#include "core/os/os.h"
+#include "core/reference.h"
+#include "core/variant_parser.h"
 #include "gdscript.h"
-#include "io/json.h"
-#include "io/marshalls.h"
-#include "math_funcs.h"
-#include "os/os.h"
-#include "reference.h"
-#include "variant_parser.h"
 
 const char *GDScriptFunctions::get_func_name(Function p_func) {
 
diff --git a/modules/gdscript/gdscript_functions.h b/modules/gdscript/gdscript_functions.h
index a29f06e839..e920dd4ece 100644
--- a/modules/gdscript/gdscript_functions.h
+++ b/modules/gdscript/gdscript_functions.h
@@ -31,7 +31,7 @@
 #ifndef GDSCRIPT_FUNCTIONS_H
 #define GDSCRIPT_FUNCTIONS_H
 
-#include "variant.h"
+#include "core/variant.h"
 
 class GDScriptFunctions {
 public:
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 7502f09d8a..9182e42c90 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -32,14 +32,13 @@
 
 #include "core/core_string_names.h"
 #include "core/engine.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/print_string.h"
 #include "core/project_settings.h"
 #include "core/reference.h"
+#include "core/script_language.h"
 #include "gdscript.h"
-#include "io/resource_loader.h"
-#include "os/file_access.h"
-#include "print_string.h"
-#include "project_settings.h"
-#include "script_language.h"
 
 template <class T>
 T *GDScriptParser::alloc_node() {
diff --git a/modules/gdscript/gdscript_parser.h b/modules/gdscript/gdscript_parser.h
index 3c51e3f372..cd68072499 100644
--- a/modules/gdscript/gdscript_parser.h
+++ b/modules/gdscript/gdscript_parser.h
@@ -31,11 +31,11 @@
 #ifndef GDSCRIPT_PARSER_H
 #define GDSCRIPT_PARSER_H
 
+#include "core/map.h"
+#include "core/object.h"
+#include "core/script_language.h"
 #include "gdscript_functions.h"
 #include "gdscript_tokenizer.h"
-#include "map.h"
-#include "object.h"
-#include "script_language.h"
 
 struct GDScriptDataType;
 struct GDScriptWarning;
diff --git a/modules/gdscript/gdscript_tokenizer.cpp b/modules/gdscript/gdscript_tokenizer.cpp
index 6e7842f190..941f5dbecc 100644
--- a/modules/gdscript/gdscript_tokenizer.cpp
+++ b/modules/gdscript/gdscript_tokenizer.cpp
@@ -30,10 +30,10 @@
 
 #include "gdscript_tokenizer.h"
 
+#include "core/io/marshalls.h"
+#include "core/map.h"
+#include "core/print_string.h"
 #include "gdscript_functions.h"
-#include "io/marshalls.h"
-#include "map.h"
-#include "print_string.h"
 
 const char *GDScriptTokenizer::token_names[TK_MAX] = {
 	"Empty",
diff --git a/modules/gdscript/gdscript_tokenizer.h b/modules/gdscript/gdscript_tokenizer.h
index 11a291cb2e..01b1ac5bf2 100644
--- a/modules/gdscript/gdscript_tokenizer.h
+++ b/modules/gdscript/gdscript_tokenizer.h
@@ -32,11 +32,11 @@
 #define GDSCRIPT_TOKENIZER_H
 
 #include "core/pair.h"
+#include "core/string_db.h"
+#include "core/ustring.h"
+#include "core/variant.h"
+#include "core/vmap.h"
 #include "gdscript_functions.h"
-#include "string_db.h"
-#include "ustring.h"
-#include "variant.h"
-#include "vmap.h"
 
 class GDScriptTokenizer {
 public:
diff --git a/modules/gdscript/register_types.cpp b/modules/gdscript/register_types.cpp
index 422223370b..26dcbdcf89 100644
--- a/modules/gdscript/register_types.cpp
+++ b/modules/gdscript/register_types.cpp
@@ -30,12 +30,12 @@
 
 #include "register_types.h"
 
+#include "core/io/file_access_encrypted.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
 #include "editor/gdscript_highlighter.h"
 #include "gdscript.h"
 #include "gdscript_tokenizer.h"
-#include "io/file_access_encrypted.h"
-#include "io/resource_loader.h"
-#include "os/file_access.h"
 
 GDScriptLanguage *script_language_gd = NULL;
 ResourceFormatLoaderGDScript *resource_loader_gd = NULL;
diff --git a/modules/gridmap/grid_map.cpp b/modules/gridmap/grid_map.cpp
index 919607c3f6..a480c4183e 100644
--- a/modules/gridmap/grid_map.cpp
+++ b/modules/gridmap/grid_map.cpp
@@ -29,13 +29,13 @@
 /*************************************************************************/
 
 #include "grid_map.h"
-#include "message_queue.h"
+#include "core/message_queue.h"
 #include "scene/3d/light.h"
 #include "scene/resources/surface_tool.h"
 #include "servers/visual_server.h"
 
-#include "io/marshalls.h"
-#include "os/os.h"
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
 #include "scene/resources/mesh_library.h"
 #include "scene/scene_string_names.h"
 
diff --git a/modules/gridmap/grid_map_editor_plugin.cpp b/modules/gridmap/grid_map_editor_plugin.cpp
index 90e28129cc..e6eaabd9ce 100644
--- a/modules/gridmap/grid_map_editor_plugin.cpp
+++ b/modules/gridmap/grid_map_editor_plugin.cpp
@@ -29,14 +29,14 @@
 /*************************************************************************/
 
 #include "grid_map_editor_plugin.h"
+#include "core/os/input.h"
 #include "editor/editor_scale.h"
 #include "editor/editor_settings.h"
 #include "editor/plugins/spatial_editor_plugin.h"
-#include "os/input.h"
 #include "scene/3d/camera.h"
 
-#include "geometry.h"
-#include "os/keyboard.h"
+#include "core/math/geometry.h"
+#include "core/os/keyboard.h"
 
 void GridMapEditor::_node_removed(Node *p_node) {
 
diff --git a/modules/gridmap/register_types.cpp b/modules/gridmap/register_types.cpp
index a3ceea10af..030286d651 100644
--- a/modules/gridmap/register_types.cpp
+++ b/modules/gridmap/register_types.cpp
@@ -30,7 +30,7 @@
 
 #include "register_types.h"
 #ifndef _3D_DISABLED
-#include "class_db.h"
+#include "core/class_db.h"
 #include "grid_map.h"
 #include "grid_map_editor_plugin.h"
 #endif
diff --git a/modules/hdr/image_loader_hdr.cpp b/modules/hdr/image_loader_hdr.cpp
index d592c19b97..fc6779ce86 100644
--- a/modules/hdr/image_loader_hdr.cpp
+++ b/modules/hdr/image_loader_hdr.cpp
@@ -30,8 +30,8 @@
 
 #include "image_loader_hdr.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 #include "thirdparty/tinyexr/tinyexr.h"
 
diff --git a/modules/hdr/image_loader_hdr.h b/modules/hdr/image_loader_hdr.h
index 3cce483745..7175b38cc8 100644
--- a/modules/hdr/image_loader_hdr.h
+++ b/modules/hdr/image_loader_hdr.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_HDR_H
 #define IMAGE_LOADER_HDR_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/modules/jpg/image_loader_jpegd.cpp b/modules/jpg/image_loader_jpegd.cpp
index 437c0d57fa..a49137ae73 100644
--- a/modules/jpg/image_loader_jpegd.cpp
+++ b/modules/jpg/image_loader_jpegd.cpp
@@ -30,8 +30,8 @@
 
 #include "image_loader_jpegd.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 #include <jpgd.h>
 #include <string.h>
diff --git a/modules/jpg/image_loader_jpegd.h b/modules/jpg/image_loader_jpegd.h
index 3e3ac5217f..b5f0637c9b 100644
--- a/modules/jpg/image_loader_jpegd.h
+++ b/modules/jpg/image_loader_jpegd.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_JPG_H
 #define IMAGE_LOADER_JPG_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/modules/mbedtls/stream_peer_mbed_tls.cpp b/modules/mbedtls/stream_peer_mbed_tls.cpp
index 884c26ddfe..3398957775 100755
--- a/modules/mbedtls/stream_peer_mbed_tls.cpp
+++ b/modules/mbedtls/stream_peer_mbed_tls.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "stream_peer_mbed_tls.h"
+#include "core/os/file_access.h"
 #include "mbedtls/platform_util.h"
-#include "os/file_access.h"
 
 static void my_debug(void *ctx, int level,
 		const char *file, int line,
diff --git a/modules/mbedtls/stream_peer_mbed_tls.h b/modules/mbedtls/stream_peer_mbed_tls.h
index 7f4e5a4513..0cf893eacf 100755
--- a/modules/mbedtls/stream_peer_mbed_tls.h
+++ b/modules/mbedtls/stream_peer_mbed_tls.h
@@ -31,7 +31,7 @@
 #ifndef STREAM_PEER_OPEN_SSL_H
 #define STREAM_PEER_OPEN_SSL_H
 
-#include "io/stream_peer_ssl.h"
+#include "core/io/stream_peer_ssl.h"
 
 #include "mbedtls/config.h"
 #include "mbedtls/ctr_drbg.h"
diff --git a/modules/mono/SCsub b/modules/mono/SCsub
index 7239506ce1..a8e19db022 100644
--- a/modules/mono/SCsub
+++ b/modules/mono/SCsub
@@ -15,8 +15,8 @@ def make_cs_files_header(src, dst, version_dst):
         header.write('#ifndef CS_COMPRESSED_H\n')
         header.write('#define CS_COMPRESSED_H\n\n')
         header.write('#ifdef TOOLS_ENABLED\n\n')
-        header.write('#include "map.h"\n')
-        header.write('#include "ustring.h"\n')
+        header.write('#include "core/map.h"\n')
+        header.write('#include "core/ustring.h"\n')
         inserted_files = ''
         import os
         latest_mtime = 0
diff --git a/modules/mono/csharp_script.cpp b/modules/mono/csharp_script.cpp
index a7899257b5..f15114ef1d 100644
--- a/modules/mono/csharp_script.cpp
+++ b/modules/mono/csharp_script.cpp
@@ -32,10 +32,10 @@
 
 #include <mono/metadata/threads.h>
 
-#include "os/file_access.h"
-#include "os/os.h"
-#include "os/thread.h"
-#include "project_settings.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/os/thread.h"
+#include "core/project_settings.h"
 
 #ifdef TOOLS_ENABLED
 #include "editor/bindings_generator.h"
diff --git a/modules/mono/csharp_script.h b/modules/mono/csharp_script.h
index d152e802de..fa399bb187 100644
--- a/modules/mono/csharp_script.h
+++ b/modules/mono/csharp_script.h
@@ -31,10 +31,10 @@
 #ifndef CSHARP_SCRIPT_H
 #define CSHARP_SCRIPT_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "script_language.h"
-#include "self_list.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/script_language.h"
+#include "core/self_list.h"
 
 #include "mono_gc_handle.h"
 #include "mono_gd/gd_mono.h"
diff --git a/modules/mono/editor/bindings_generator.cpp b/modules/mono/editor/bindings_generator.cpp
index 1620c05909..308c54ecb3 100644
--- a/modules/mono/editor/bindings_generator.cpp
+++ b/modules/mono/editor/bindings_generator.cpp
@@ -32,13 +32,13 @@
 
 #ifdef DEBUG_METHODS_ENABLED
 
-#include "engine.h"
-#include "global_constants.h"
-#include "io/compression.h"
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "ucaps.h"
+#include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/io/compression.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/ucaps.h"
 
 #include "../glue/cs_compressed.gen.h"
 #include "../glue/cs_glue_version.gen.h"
diff --git a/modules/mono/editor/bindings_generator.h b/modules/mono/editor/bindings_generator.h
index 16341e5857..ad89255ba5 100644
--- a/modules/mono/editor/bindings_generator.h
+++ b/modules/mono/editor/bindings_generator.h
@@ -31,13 +31,13 @@
 #ifndef BINDINGS_GENERATOR_H
 #define BINDINGS_GENERATOR_H
 
-#include "class_db.h"
+#include "core/class_db.h"
 #include "editor/doc/doc_data.h"
 #include "editor/editor_help.h"
 
 #ifdef DEBUG_METHODS_ENABLED
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 class BindingsGenerator {
 
diff --git a/modules/mono/editor/csharp_project.cpp b/modules/mono/editor/csharp_project.cpp
index bc95607743..4764cbe941 100644
--- a/modules/mono/editor/csharp_project.cpp
+++ b/modules/mono/editor/csharp_project.cpp
@@ -30,8 +30,8 @@
 
 #include "csharp_project.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include "../mono_gd/gd_mono_class.h"
 #include "../mono_gd/gd_mono_marshal.h"
diff --git a/modules/mono/editor/csharp_project.h b/modules/mono/editor/csharp_project.h
index 381dd17e02..d852139de0 100644
--- a/modules/mono/editor/csharp_project.h
+++ b/modules/mono/editor/csharp_project.h
@@ -31,7 +31,7 @@
 #ifndef CSHARP_PROJECT_H
 #define CSHARP_PROJECT_H
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 namespace CSharpProject {
 
diff --git a/modules/mono/editor/monodevelop_instance.h b/modules/mono/editor/monodevelop_instance.h
index 552c10a61d..73cf0f54cc 100644
--- a/modules/mono/editor/monodevelop_instance.h
+++ b/modules/mono/editor/monodevelop_instance.h
@@ -31,7 +31,7 @@
 #ifndef MONODEVELOP_INSTANCE_H
 #define MONODEVELOP_INSTANCE_H
 
-#include "reference.h"
+#include "core/reference.h"
 
 #include "../mono_gc_handle.h"
 #include "../mono_gd/gd_mono_method.h"
diff --git a/modules/mono/editor/net_solution.cpp b/modules/mono/editor/net_solution.cpp
index dab96e44e9..8bbd376c9a 100644
--- a/modules/mono/editor/net_solution.cpp
+++ b/modules/mono/editor/net_solution.cpp
@@ -30,8 +30,8 @@
 
 #include "net_solution.h"
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
 
 #include "../utils/path_utils.h"
 #include "../utils/string_utils.h"
diff --git a/modules/mono/editor/net_solution.h b/modules/mono/editor/net_solution.h
index 293e86917a..bdff24af0b 100644
--- a/modules/mono/editor/net_solution.h
+++ b/modules/mono/editor/net_solution.h
@@ -31,8 +31,8 @@
 #ifndef NET_SOLUTION_H
 #define NET_SOLUTION_H
 
-#include "map.h"
-#include "ustring.h"
+#include "core/map.h"
+#include "core/ustring.h"
 
 struct NETSolution {
 	String name;
diff --git a/modules/mono/godotsharp_dirs.cpp b/modules/mono/godotsharp_dirs.cpp
index 92c5cdc5c1..2570e68f13 100644
--- a/modules/mono/godotsharp_dirs.cpp
+++ b/modules/mono/godotsharp_dirs.cpp
@@ -30,13 +30,13 @@
 
 #include "godotsharp_dirs.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 #ifdef TOOLS_ENABLED
+#include "core/os/dir_access.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 #include "editor/editor_settings.h"
-#include "os/dir_access.h"
-#include "project_settings.h"
-#include "version.h"
 #endif
 
 namespace GodotSharpDirs {
diff --git a/modules/mono/godotsharp_dirs.h b/modules/mono/godotsharp_dirs.h
index e87b5a4150..3466cb271d 100644
--- a/modules/mono/godotsharp_dirs.h
+++ b/modules/mono/godotsharp_dirs.h
@@ -31,7 +31,7 @@
 #ifndef GODOTSHARP_DIRS_H
 #define GODOTSHARP_DIRS_H
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 namespace GodotSharpDirs {
 
diff --git a/modules/mono/mono_gc_handle.h b/modules/mono/mono_gc_handle.h
index e145c1e1e6..e5aa04e2b8 100644
--- a/modules/mono/mono_gc_handle.h
+++ b/modules/mono/mono_gc_handle.h
@@ -33,7 +33,7 @@
 
 #include <mono/jit/jit.h>
 
-#include "reference.h"
+#include "core/reference.h"
 
 class MonoGCHandle : public Reference {
 
diff --git a/modules/mono/mono_gd/gd_mono.cpp b/modules/mono/mono_gd/gd_mono.cpp
index 96d3f34039..b2b5a90507 100644
--- a/modules/mono/mono_gd/gd_mono.cpp
+++ b/modules/mono/mono_gd/gd_mono.cpp
@@ -35,11 +35,11 @@
 #include <mono/metadata/mono-debug.h>
 #include <mono/metadata/mono-gc.h>
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "os/thread.h"
-#include "project_settings.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/os/thread.h"
+#include "core/project_settings.h"
 
 #include "../csharp_script.h"
 #include "../glue/cs_glue_version.gen.h"
diff --git a/modules/mono/mono_gd/gd_mono_assembly.h b/modules/mono/mono_gd/gd_mono_assembly.h
index 2c6d367fc6..0ba11ac412 100644
--- a/modules/mono/mono_gd/gd_mono_assembly.h
+++ b/modules/mono/mono_gd/gd_mono_assembly.h
@@ -34,10 +34,10 @@
 #include <mono/jit/jit.h>
 #include <mono/metadata/assembly.h>
 
+#include "core/hash_map.h"
+#include "core/map.h"
+#include "core/ustring.h"
 #include "gd_mono_utils.h"
-#include "hash_map.h"
-#include "map.h"
-#include "ustring.h"
 
 class GDMonoAssembly {
 
diff --git a/modules/mono/mono_gd/gd_mono_class.h b/modules/mono/mono_gd/gd_mono_class.h
index f4e386549a..477305d503 100644
--- a/modules/mono/mono_gd/gd_mono_class.h
+++ b/modules/mono/mono_gd/gd_mono_class.h
@@ -33,8 +33,8 @@
 
 #include <mono/metadata/debug-helpers.h>
 
-#include "map.h"
-#include "ustring.h"
+#include "core/map.h"
+#include "core/ustring.h"
 
 #include "gd_mono_field.h"
 #include "gd_mono_header.h"
diff --git a/modules/mono/mono_gd/gd_mono_header.h b/modules/mono/mono_gd/gd_mono_header.h
index 72a5439044..2fe05006f1 100644
--- a/modules/mono/mono_gd/gd_mono_header.h
+++ b/modules/mono/mono_gd/gd_mono_header.h
@@ -31,7 +31,7 @@
 #ifndef GD_MONO_HEADER_H
 #define GD_MONO_HEADER_H
 
-#include "int_types.h"
+#include "core/int_types.h"
 
 class GDMonoAssembly;
 class GDMonoClass;
diff --git a/modules/mono/mono_gd/gd_mono_log.cpp b/modules/mono/mono_gd/gd_mono_log.cpp
index 5224d309de..b7bb2cb2d6 100644
--- a/modules/mono/mono_gd/gd_mono_log.cpp
+++ b/modules/mono/mono_gd/gd_mono_log.cpp
@@ -33,8 +33,8 @@
 #include <mono/utils/mono-logger.h>
 #include <stdlib.h> // abort
 
-#include "os/dir_access.h"
-#include "os/os.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
 
 #include "../godotsharp_dirs.h"
 
diff --git a/modules/mono/mono_gd/gd_mono_log.h b/modules/mono/mono_gd/gd_mono_log.h
index a7e374858c..3b4ff07b7b 100644
--- a/modules/mono/mono_gd/gd_mono_log.h
+++ b/modules/mono/mono_gd/gd_mono_log.h
@@ -31,7 +31,7 @@
 #ifndef GD_MONO_LOG_H
 #define GD_MONO_LOG_H
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 class GDMonoLog {
 
diff --git a/modules/mono/mono_gd/gd_mono_marshal.h b/modules/mono/mono_gd/gd_mono_marshal.h
index 464f584a0a..1ad0a4a6ea 100644
--- a/modules/mono/mono_gd/gd_mono_marshal.h
+++ b/modules/mono/mono_gd/gd_mono_marshal.h
@@ -31,9 +31,9 @@
 #ifndef GDMONOMARSHAL_H
 #define GDMONOMARSHAL_H
 
+#include "core/variant.h"
 #include "gd_mono.h"
 #include "gd_mono_utils.h"
-#include "variant.h"
 
 namespace GDMonoMarshal {
 
diff --git a/modules/mono/mono_gd/gd_mono_utils.cpp b/modules/mono/mono_gd/gd_mono_utils.cpp
index 5e02ebf430..cc5b5652f8 100644
--- a/modules/mono/mono_gd/gd_mono_utils.cpp
+++ b/modules/mono/mono_gd/gd_mono_utils.cpp
@@ -32,10 +32,10 @@
 
 #include <mono/metadata/exception.h>
 
-#include "os/dir_access.h"
-#include "os/os.h"
-#include "project_settings.h"
-#include "reference.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/reference.h"
 
 #include "../csharp_script.h"
 #include "../utils/macros.h"
diff --git a/modules/mono/mono_gd/gd_mono_utils.h b/modules/mono/mono_gd/gd_mono_utils.h
index c6de824d5a..c8e23f071f 100644
--- a/modules/mono/mono_gd/gd_mono_utils.h
+++ b/modules/mono/mono_gd/gd_mono_utils.h
@@ -38,8 +38,8 @@
 #include "../utils/thread_local.h"
 #include "gd_mono_header.h"
 
-#include "object.h"
-#include "reference.h"
+#include "core/object.h"
+#include "core/reference.h"
 
 #define UNLIKELY_UNHANDLED_EXCEPTION(m_exc)            \
 	if (unlikely(m_exc != NULL)) {                     \
diff --git a/modules/mono/register_types.cpp b/modules/mono/register_types.cpp
index 4410996546..f6cb143e8e 100644
--- a/modules/mono/register_types.cpp
+++ b/modules/mono/register_types.cpp
@@ -30,7 +30,7 @@
 
 #include "register_types.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 #include "csharp_script.h"
 
diff --git a/modules/mono/signal_awaiter_utils.h b/modules/mono/signal_awaiter_utils.h
index 1920432709..4ec860537b 100644
--- a/modules/mono/signal_awaiter_utils.h
+++ b/modules/mono/signal_awaiter_utils.h
@@ -31,8 +31,8 @@
 #ifndef SIGNAL_AWAITER_UTILS_H
 #define SIGNAL_AWAITER_UTILS_H
 
+#include "core/reference.h"
 #include "mono_gc_handle.h"
-#include "reference.h"
 
 namespace SignalAwaiterUtils {
 
diff --git a/modules/mono/utils/mono_reg_utils.cpp b/modules/mono/utils/mono_reg_utils.cpp
index 7b23cd7579..8116df5f51 100644
--- a/modules/mono/utils/mono_reg_utils.cpp
+++ b/modules/mono/utils/mono_reg_utils.cpp
@@ -32,7 +32,7 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 // Here, after os/os.h
 #include <windows.h>
diff --git a/modules/mono/utils/mono_reg_utils.h b/modules/mono/utils/mono_reg_utils.h
index edf31f5a07..26f7e2d3c2 100644
--- a/modules/mono/utils/mono_reg_utils.h
+++ b/modules/mono/utils/mono_reg_utils.h
@@ -33,7 +33,7 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 struct MonoRegInfo {
 
diff --git a/modules/mono/utils/path_utils.cpp b/modules/mono/utils/path_utils.cpp
index 4b77aeb54e..ea942a9a8e 100644
--- a/modules/mono/utils/path_utils.cpp
+++ b/modules/mono/utils/path_utils.cpp
@@ -30,10 +30,10 @@
 
 #include "path_utils.h"
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #ifdef WINDOWS_ENABLED
 #define ENV_PATH_SEP ";"
diff --git a/modules/mono/utils/path_utils.h b/modules/mono/utils/path_utils.h
index 184cacfac7..3c7b36c0d4 100644
--- a/modules/mono/utils/path_utils.h
+++ b/modules/mono/utils/path_utils.h
@@ -31,7 +31,7 @@
 #ifndef PATH_UTILS_H
 #define PATH_UTILS_H
 
-#include "ustring.h"
+#include "core/ustring.h"
 
 _FORCE_INLINE_ String path_join(const String &e1, const String &e2) {
 	return e1.plus_file(e2);
diff --git a/modules/mono/utils/string_utils.h b/modules/mono/utils/string_utils.h
index 5dddaee6e8..f2df2340ae 100644
--- a/modules/mono/utils/string_utils.h
+++ b/modules/mono/utils/string_utils.h
@@ -31,8 +31,8 @@
 #ifndef STRING_FORMAT_H
 #define STRING_FORMAT_H
 
-#include "ustring.h"
-#include "variant.h"
+#include "core/ustring.h"
+#include "core/variant.h"
 
 String sformat(const String &p_text, const Variant &p1 = Variant(), const Variant &p2 = Variant(), const Variant &p3 = Variant(), const Variant &p4 = Variant(), const Variant &p5 = Variant());
 
diff --git a/modules/opus/audio_stream_opus.h b/modules/opus/audio_stream_opus.h
index 3ffdaf2c18..c004adeb77 100644
--- a/modules/opus/audio_stream_opus.h
+++ b/modules/opus/audio_stream_opus.h
@@ -31,8 +31,8 @@
 #ifndef AUDIO_STREAM_OPUS_H
 #define AUDIO_STREAM_OPUS_H
 
-#include "io/resource_loader.h"
-#include "os/file_access.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
 #include "scene/resources/audio_stream.h"
 
 #include <opus/opusfile.h>
diff --git a/modules/pvr/texture_loader_pvr.cpp b/modules/pvr/texture_loader_pvr.cpp
index 6ec44023c1..e6718eb4a2 100644
--- a/modules/pvr/texture_loader_pvr.cpp
+++ b/modules/pvr/texture_loader_pvr.cpp
@@ -31,7 +31,7 @@
 #include "texture_loader_pvr.h"
 #include "PvrTcEncoder.h"
 #include "RgbaBitmap.h"
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 #include <string.h>
 
 static void _pvrtc_decompress(Image *p_img);
diff --git a/modules/pvr/texture_loader_pvr.h b/modules/pvr/texture_loader_pvr.h
index 9369178336..c859a4cdda 100644
--- a/modules/pvr/texture_loader_pvr.h
+++ b/modules/pvr/texture_loader_pvr.h
@@ -31,7 +31,7 @@
 #ifndef TEXTURE_LOADER_PVR_H
 #define TEXTURE_LOADER_PVR_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "scene/resources/texture.h"
 
 class ResourceFormatPVR : public ResourceFormatLoader {
diff --git a/modules/recast/navigation_mesh_editor_plugin.cpp b/modules/recast/navigation_mesh_editor_plugin.cpp
index 8556b7aa0a..98351fbaee 100644
--- a/modules/recast/navigation_mesh_editor_plugin.cpp
+++ b/modules/recast/navigation_mesh_editor_plugin.cpp
@@ -30,8 +30,8 @@
 
 #include "navigation_mesh_editor_plugin.h"
 
-#include "io/marshalls.h"
-#include "io/resource_saver.h"
+#include "core/io/marshalls.h"
+#include "core/io/resource_saver.h"
 #include "scene/3d/mesh_instance.h"
 #include "scene/gui/box_container.h"
 
diff --git a/modules/recast/navigation_mesh_generator.h b/modules/recast/navigation_mesh_generator.h
index 3588539ef1..2f2f57d721 100644
--- a/modules/recast/navigation_mesh_generator.h
+++ b/modules/recast/navigation_mesh_generator.h
@@ -31,9 +31,9 @@
 #ifndef NAVIGATION_MESH_GENERATOR_H
 #define NAVIGATION_MESH_GENERATOR_H
 
+#include "core/os/thread.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
-#include "os/thread.h"
 #include "scene/3d/mesh_instance.h"
 #include "scene/3d/navigation_mesh.h"
 #include "scene/resources/shape.h"
diff --git a/modules/regex/register_types.cpp b/modules/regex/register_types.cpp
index 14eba69ee0..73e2c5022d 100644
--- a/modules/regex/register_types.cpp
+++ b/modules/regex/register_types.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "register_types.h"
-#include "class_db.h"
+#include "core/class_db.h"
 #include "regex.h"
 
 void register_regex_types() {
diff --git a/modules/squish/image_compress_squish.cpp b/modules/squish/image_compress_squish.cpp
index bb8a4bdbea..26cb76011c 100644
--- a/modules/squish/image_compress_squish.cpp
+++ b/modules/squish/image_compress_squish.cpp
@@ -30,7 +30,7 @@
 
 #include "image_compress_squish.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 
 #include <squish.h>
 
diff --git a/modules/squish/image_compress_squish.h b/modules/squish/image_compress_squish.h
index 6da947beea..dfebdc955f 100644
--- a/modules/squish/image_compress_squish.h
+++ b/modules/squish/image_compress_squish.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_COMPRESS_SQUISH_H
 #define IMAGE_COMPRESS_SQUISH_H
 
-#include "image.h"
+#include "core/image.h"
 
 void image_compress_squish(Image *p_image, float p_lossy_quality, Image::CompressSource p_source);
 void image_decompress_squish(Image *p_image);
diff --git a/modules/stb_vorbis/audio_stream_ogg_vorbis.cpp b/modules/stb_vorbis/audio_stream_ogg_vorbis.cpp
index 0e533d3978..57b6b5343e 100644
--- a/modules/stb_vorbis/audio_stream_ogg_vorbis.cpp
+++ b/modules/stb_vorbis/audio_stream_ogg_vorbis.cpp
@@ -30,7 +30,7 @@
 
 #include "audio_stream_ogg_vorbis.h"
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
diff --git a/modules/stb_vorbis/audio_stream_ogg_vorbis.h b/modules/stb_vorbis/audio_stream_ogg_vorbis.h
index d7bc7cc0d7..71a957a6af 100644
--- a/modules/stb_vorbis/audio_stream_ogg_vorbis.h
+++ b/modules/stb_vorbis/audio_stream_ogg_vorbis.h
@@ -31,7 +31,7 @@
 #ifndef AUDIO_STREAM_STB_VORBIS_H
 #define AUDIO_STREAM_STB_VORBIS_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "servers/audio/audio_stream.h"
 
 #define STB_VORBIS_HEADER_ONLY
diff --git a/modules/stb_vorbis/resource_importer_ogg_vorbis.cpp b/modules/stb_vorbis/resource_importer_ogg_vorbis.cpp
index c8acdb689a..74f2e68206 100644
--- a/modules/stb_vorbis/resource_importer_ogg_vorbis.cpp
+++ b/modules/stb_vorbis/resource_importer_ogg_vorbis.cpp
@@ -30,8 +30,8 @@
 
 #include "resource_importer_ogg_vorbis.h"
 
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
 #include "scene/resources/texture.h"
 
 String ResourceImporterOGGVorbis::get_importer_name() const {
diff --git a/modules/stb_vorbis/resource_importer_ogg_vorbis.h b/modules/stb_vorbis/resource_importer_ogg_vorbis.h
index a1847545aa..82a03cd207 100644
--- a/modules/stb_vorbis/resource_importer_ogg_vorbis.h
+++ b/modules/stb_vorbis/resource_importer_ogg_vorbis.h
@@ -32,7 +32,7 @@
 #define RESOURCEIMPORTEROGGVORBIS_H
 
 #include "audio_stream_ogg_vorbis.h"
-#include "io/resource_import.h"
+#include "core/io/resource_import.h"
 
 class ResourceImporterOGGVorbis : public ResourceImporter {
 	GDCLASS(ResourceImporterOGGVorbis, ResourceImporter)
diff --git a/modules/svg/image_loader_svg.cpp b/modules/svg/image_loader_svg.cpp
index 8ccd229f3d..ccb7d93885 100644
--- a/modules/svg/image_loader_svg.cpp
+++ b/modules/svg/image_loader_svg.cpp
@@ -30,10 +30,9 @@
 
 #include "image_loader_svg.h"
 
-#include "os/os.h"
-#include "print_string.h"
-
-#include <ustring.h>
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/ustring.h"
 
 void SVGRasterizer::rasterize(NSVGimage *p_image, float p_tx, float p_ty, float p_scale, unsigned char *p_dst, int p_w, int p_h, int p_stride) {
 	nsvgRasterize(rasterizer, p_image, p_tx, p_ty, p_scale, p_dst, p_w, p_h, p_stride);
diff --git a/modules/svg/image_loader_svg.h b/modules/svg/image_loader_svg.h
index 63854da2f6..ff361ad800 100644
--- a/modules/svg/image_loader_svg.h
+++ b/modules/svg/image_loader_svg.h
@@ -31,8 +31,8 @@
 #ifndef IMAGE_LOADER_SVG_H
 #define IMAGE_LOADER_SVG_H
 
-#include "io/image_loader.h"
-#include "ustring.h"
+#include "core/io/image_loader.h"
+#include "core/ustring.h"
 
 #include <nanosvg.h>
 #include <nanosvgrast.h>
diff --git a/modules/tga/image_loader_tga.cpp b/modules/tga/image_loader_tga.cpp
index d4fa88afa7..9bc24017fc 100644
--- a/modules/tga/image_loader_tga.cpp
+++ b/modules/tga/image_loader_tga.cpp
@@ -30,8 +30,8 @@
 
 #include "image_loader_tga.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 Error ImageLoaderTGA::decode_tga_rle(const uint8_t *p_compressed_buffer, size_t p_pixel_size, uint8_t *p_uncompressed_buffer, size_t p_output_size) {
 	Error error;
diff --git a/modules/tga/image_loader_tga.h b/modules/tga/image_loader_tga.h
index c4b10b7f49..0fe83a54a1 100644
--- a/modules/tga/image_loader_tga.h
+++ b/modules/tga/image_loader_tga.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_TGA_H
 #define IMAGE_LOADER_TGA_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 /**
 	@author SaracenOne
diff --git a/modules/thekla_unwrap/register_types.cpp b/modules/thekla_unwrap/register_types.cpp
index c74cbd9d18..8e733d1ad2 100644
--- a/modules/thekla_unwrap/register_types.cpp
+++ b/modules/thekla_unwrap/register_types.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "register_types.h"
-#include "error_macros.h"
+#include "core/error_macros.h"
 #include "thirdparty/thekla_atlas/thekla/thekla_atlas.h"
 
 #include <stdio.h>
diff --git a/modules/theora/video_stream_theora.cpp b/modules/theora/video_stream_theora.cpp
index 68087ac01f..44052d473f 100644
--- a/modules/theora/video_stream_theora.cpp
+++ b/modules/theora/video_stream_theora.cpp
@@ -30,8 +30,8 @@
 
 #include "video_stream_theora.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include "thirdparty/misc/yuv2rgb.h"
 
diff --git a/modules/theora/video_stream_theora.h b/modules/theora/video_stream_theora.h
index 1aba3f56da..4be723f85b 100644
--- a/modules/theora/video_stream_theora.h
+++ b/modules/theora/video_stream_theora.h
@@ -31,11 +31,11 @@
 #ifndef VIDEO_STREAM_THEORA_H
 #define VIDEO_STREAM_THEORA_H
 
-#include "io/resource_loader.h"
-#include "os/file_access.h"
-#include "os/semaphore.h"
-#include "os/thread.h"
-#include "ring_buffer.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
+#include "core/ring_buffer.h"
 #include "scene/resources/video_stream.h"
 #include "servers/audio_server.h"
 
diff --git a/modules/tinyexr/image_loader_tinyexr.cpp b/modules/tinyexr/image_loader_tinyexr.cpp
index b19bcfefcb..63f0781028 100644
--- a/modules/tinyexr/image_loader_tinyexr.cpp
+++ b/modules/tinyexr/image_loader_tinyexr.cpp
@@ -30,8 +30,8 @@
 
 #include "image_loader_tinyexr.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 #include "thirdparty/tinyexr/tinyexr.h"
 
diff --git a/modules/tinyexr/image_loader_tinyexr.h b/modules/tinyexr/image_loader_tinyexr.h
index 6706e0972a..a6ef9000e5 100644
--- a/modules/tinyexr/image_loader_tinyexr.h
+++ b/modules/tinyexr/image_loader_tinyexr.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_TINYEXR_H
 #define IMAGE_LOADER_TINYEXR_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/modules/visual_script/register_types.cpp b/modules/visual_script/register_types.cpp
index 11401c0460..6e081817f1 100644
--- a/modules/visual_script/register_types.cpp
+++ b/modules/visual_script/register_types.cpp
@@ -31,7 +31,7 @@
 #include "register_types.h"
 
 #include "core/engine.h"
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "visual_script.h"
 #include "visual_script_builtin_funcs.h"
 #include "visual_script_editor.h"
diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
index bbdec7195f..ff97c21fd9 100644
--- a/modules/visual_script/visual_script.cpp
+++ b/modules/visual_script/visual_script.cpp
@@ -30,8 +30,8 @@
 
 #include "visual_script.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/main/node.h"
 #include "visual_script_nodes.h"
 
diff --git a/modules/visual_script/visual_script.h b/modules/visual_script/visual_script.h
index 13a8b909b0..ea99ce4970 100644
--- a/modules/visual_script/visual_script.h
+++ b/modules/visual_script/visual_script.h
@@ -31,8 +31,8 @@
 #ifndef VISUAL_SCRIPT_H
 #define VISUAL_SCRIPT_H
 
-#include "os/thread.h"
-#include "script_language.h"
+#include "core/os/thread.h"
+#include "core/script_language.h"
 
 class VisualScriptInstance;
 class VisualScriptNodeInstance;
diff --git a/modules/visual_script/visual_script_builtin_funcs.cpp b/modules/visual_script/visual_script_builtin_funcs.cpp
index 8e98b08b22..e7a4e0c31f 100644
--- a/modules/visual_script/visual_script_builtin_funcs.cpp
+++ b/modules/visual_script/visual_script_builtin_funcs.cpp
@@ -30,13 +30,13 @@
 
 #include "visual_script_builtin_funcs.h"
 
-#include "class_db.h"
-#include "func_ref.h"
-#include "io/marshalls.h"
-#include "math_funcs.h"
-#include "os/os.h"
-#include "reference.h"
-#include "variant_parser.h"
+#include "core/class_db.h"
+#include "core/func_ref.h"
+#include "core/io/marshalls.h"
+#include "core/math/math_funcs.h"
+#include "core/os/os.h"
+#include "core/reference.h"
+#include "core/variant_parser.h"
 
 const char *VisualScriptBuiltinFunc::func_name[VisualScriptBuiltinFunc::FUNC_MAX] = {
 	"sin",
diff --git a/modules/visual_script/visual_script_editor.cpp b/modules/visual_script/visual_script_editor.cpp
index 4d1deb6a89..c9b52a221a 100644
--- a/modules/visual_script/visual_script_editor.cpp
+++ b/modules/visual_script/visual_script_editor.cpp
@@ -30,13 +30,13 @@
 
 #include "visual_script_editor.h"
 
+#include "core/object.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "core/script_language.h"
+#include "core/variant.h"
 #include "editor/editor_node.h"
 #include "editor/editor_resource_preview.h"
-#include "object.h"
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "variant.h"
 #include "visual_script_expression.h"
 #include "visual_script_flow_control.h"
 #include "visual_script_func_nodes.h"
diff --git a/modules/visual_script/visual_script_flow_control.cpp b/modules/visual_script/visual_script_flow_control.cpp
index 7535f37ffc..c3ab949d24 100644
--- a/modules/visual_script/visual_script_flow_control.cpp
+++ b/modules/visual_script/visual_script_flow_control.cpp
@@ -30,9 +30,9 @@
 
 #include "visual_script_flow_control.h"
 
-#include "io/resource_loader.h"
-#include "os/keyboard.h"
-#include "project_settings.h"
+#include "core/io/resource_loader.h"
+#include "core/os/keyboard.h"
+#include "core/project_settings.h"
 
 //////////////////////////////////////////
 ////////////////RETURN////////////////////
diff --git a/modules/visual_script/visual_script_func_nodes.cpp b/modules/visual_script/visual_script_func_nodes.cpp
index f926d4e2eb..1913bfd8c7 100644
--- a/modules/visual_script/visual_script_func_nodes.cpp
+++ b/modules/visual_script/visual_script_func_nodes.cpp
@@ -30,9 +30,9 @@
 
 #include "visual_script_func_nodes.h"
 
-#include "engine.h"
-#include "io/resource_loader.h"
-#include "os/os.h"
+#include "core/engine.h"
+#include "core/io/resource_loader.h"
+#include "core/os/os.h"
 #include "scene/main/node.h"
 #include "scene/main/scene_tree.h"
 #include "visual_script_nodes.h"
diff --git a/modules/visual_script/visual_script_nodes.cpp b/modules/visual_script/visual_script_nodes.cpp
index d499512d93..99f242e974 100644
--- a/modules/visual_script/visual_script_nodes.cpp
+++ b/modules/visual_script/visual_script_nodes.cpp
@@ -30,11 +30,11 @@
 
 #include "visual_script_nodes.h"
 
-#include "engine.h"
-#include "global_constants.h"
-#include "os/input.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/main/node.h"
 #include "scene/main/scene_tree.h"
 
diff --git a/modules/visual_script/visual_script_property_selector.cpp b/modules/visual_script/visual_script_property_selector.cpp
index 8d465c8872..39997d14c4 100644
--- a/modules/visual_script/visual_script_property_selector.cpp
+++ b/modules/visual_script/visual_script_property_selector.cpp
@@ -30,13 +30,13 @@
 
 #include "visual_script_property_selector.h"
 
+#include "core/os/keyboard.h"
 #include "editor_scale.h"
 #include "modules/visual_script/visual_script.h"
 #include "modules/visual_script/visual_script_builtin_funcs.h"
 #include "modules/visual_script/visual_script_flow_control.h"
 #include "modules/visual_script/visual_script_func_nodes.h"
 #include "modules/visual_script/visual_script_nodes.h"
-#include "os/keyboard.h"
 #include "scene/main/node.h"
 #include "scene/main/viewport.h"
 
diff --git a/modules/visual_script/visual_script_yield_nodes.cpp b/modules/visual_script/visual_script_yield_nodes.cpp
index a96e8408c0..a21fff67fe 100644
--- a/modules/visual_script/visual_script_yield_nodes.cpp
+++ b/modules/visual_script/visual_script_yield_nodes.cpp
@@ -30,7 +30,7 @@
 
 #include "visual_script_yield_nodes.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/main/node.h"
 #include "scene/main/scene_tree.h"
 #include "visual_script_nodes.h"
diff --git a/modules/vorbis/audio_stream_ogg_vorbis.h b/modules/vorbis/audio_stream_ogg_vorbis.h
index 01de8a3143..73c4b5f3f4 100644
--- a/modules/vorbis/audio_stream_ogg_vorbis.h
+++ b/modules/vorbis/audio_stream_ogg_vorbis.h
@@ -31,9 +31,9 @@
 #ifndef AUDIO_STREAM_OGG_VORBIS_H
 #define AUDIO_STREAM_OGG_VORBIS_H
 
-#include "io/resource_loader.h"
-#include "os/file_access.h"
-#include "os/thread_safe.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/os/thread_safe.h"
 #include "scene/resources/audio_stream.h"
 
 #include <vorbis/vorbisfile.h>
diff --git a/modules/webm/video_stream_webm.cpp b/modules/webm/video_stream_webm.cpp
index 1bb9a43886..d9a6ece085 100644
--- a/modules/webm/video_stream_webm.cpp
+++ b/modules/webm/video_stream_webm.cpp
@@ -35,9 +35,9 @@
 
 #include "mkvparser/mkvparser.h"
 
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 #include "thirdparty/misc/yuv2rgb.h"
 
diff --git a/modules/webm/video_stream_webm.h b/modules/webm/video_stream_webm.h
index dcf88092c5..3739a73114 100644
--- a/modules/webm/video_stream_webm.h
+++ b/modules/webm/video_stream_webm.h
@@ -31,7 +31,7 @@
 #ifndef VIDEO_STREAM_WEBM_H
 #define VIDEO_STREAM_WEBM_H
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "scene/resources/video_stream.h"
 
 class WebMFrame;
diff --git a/modules/webp/image_loader_webp.cpp b/modules/webp/image_loader_webp.cpp
index 42b2c77777..6734ae90d9 100644
--- a/modules/webp/image_loader_webp.cpp
+++ b/modules/webp/image_loader_webp.cpp
@@ -30,9 +30,9 @@
 
 #include "image_loader_webp.h"
 
-#include "io/marshalls.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 #include <stdlib.h>
 #include <webp/decode.h>
diff --git a/modules/webp/image_loader_webp.h b/modules/webp/image_loader_webp.h
index f051fed4b8..256c787a16 100644
--- a/modules/webp/image_loader_webp.h
+++ b/modules/webp/image_loader_webp.h
@@ -31,7 +31,7 @@
 #ifndef IMAGE_LOADER_WEBP_H
 #define IMAGE_LOADER_WEBP_H
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/modules/websocket/register_types.cpp b/modules/websocket/register_types.cpp
index 721f3cc330..538cd40454 100644
--- a/modules/websocket/register_types.cpp
+++ b/modules/websocket/register_types.cpp
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 #include "register_types.h"
-#include "error_macros.h"
+#include "core/error_macros.h"
 #ifdef JAVASCRIPT_ENABLED
 #include "emscripten.h"
 #include "emws_client.h"
diff --git a/platform/android/audio_driver_jandroid.cpp b/platform/android/audio_driver_jandroid.cpp
index 46bd691290..4fab40d534 100644
--- a/platform/android/audio_driver_jandroid.cpp
+++ b/platform/android/audio_driver_jandroid.cpp
@@ -30,8 +30,8 @@
 
 #include "audio_driver_jandroid.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "thread_jandroid.h"
 
 #ifndef ANDROID_NATIVE_ACTIVITY
diff --git a/platform/android/audio_driver_opensl.h b/platform/android/audio_driver_opensl.h
index 88cb122414..8e879b27c5 100644
--- a/platform/android/audio_driver_opensl.h
+++ b/platform/android/audio_driver_opensl.h
@@ -31,7 +31,7 @@
 #ifndef AUDIO_DRIVER_OPENSL_H
 #define AUDIO_DRIVER_OPENSL_H
 
-#include "os/mutex.h"
+#include "core/os/mutex.h"
 #include "servers/audio_server.h"
 
 #include <SLES/OpenSLES.h>
diff --git a/platform/android/dir_access_android.h b/platform/android/dir_access_android.h
index 085d7160cd..3ac0bd6332 100644
--- a/platform/android/dir_access_android.h
+++ b/platform/android/dir_access_android.h
@@ -33,7 +33,7 @@
 
 #ifdef ANDROID_NATIVE_ACTIVITY
 
-#include "os/dir_access.h"
+#include "core/os/dir_access.h"
 #include <android/asset_manager.h>
 #include <android/log.h>
 #include <android_native_app_glue.h>
diff --git a/platform/android/dir_access_jandroid.cpp b/platform/android/dir_access_jandroid.cpp
index ee5ae156b7..6a95277585 100644
--- a/platform/android/dir_access_jandroid.cpp
+++ b/platform/android/dir_access_jandroid.cpp
@@ -31,8 +31,8 @@
 #ifndef ANDROID_NATIVE_ACTIVITY
 
 #include "dir_access_jandroid.h"
+#include "core/print_string.h"
 #include "file_access_jandroid.h"
-#include "print_string.h"
 #include "thread_jandroid.h"
 
 jobject DirAccessJAndroid::io = NULL;
diff --git a/platform/android/dir_access_jandroid.h b/platform/android/dir_access_jandroid.h
index 8dc52ab9c8..1653fb0aa5 100644
--- a/platform/android/dir_access_jandroid.h
+++ b/platform/android/dir_access_jandroid.h
@@ -33,8 +33,8 @@
 
 #ifndef ANDROID_NATIVE_ACTIVITY
 
+#include "core/os/dir_access.h"
 #include "java_glue.h"
-#include "os/dir_access.h"
 #include <stdio.h>
 
 class DirAccessJAndroid : public DirAccess {
diff --git a/platform/android/export/export.cpp b/platform/android/export/export.cpp
index fa25a25811..fa9474bfe8 100644
--- a/platform/android/export/export.cpp
+++ b/platform/android/export/export.cpp
@@ -30,17 +30,17 @@
 
 #include "export.h"
 
+#include "core/io/marshalls.h"
+#include "core/io/zip_io.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 #include "editor/editor_export.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
-#include "io/marshalls.h"
-#include "io/zip_io.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "platform/android/logo.gen.h"
 #include "platform/android/run_icon.gen.h"
-#include "project_settings.h"
-#include "version.h"
 
 #include <string.h>
 
diff --git a/platform/android/file_access_android.cpp b/platform/android/file_access_android.cpp
index c2eed50e4c..4c7436a5dc 100644
--- a/platform/android/file_access_android.cpp
+++ b/platform/android/file_access_android.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "file_access_android.h"
-#include "print_string.h"
+#include "core/print_string.h"
 
 AAssetManager *FileAccessAndroid::asset_manager = NULL;
 
diff --git a/platform/android/file_access_android.h b/platform/android/file_access_android.h
index 03f4c59521..1ee8697fa4 100644
--- a/platform/android/file_access_android.h
+++ b/platform/android/file_access_android.h
@@ -31,7 +31,7 @@
 #ifndef FILE_ACCESS_ANDROID_H
 #define FILE_ACCESS_ANDROID_H
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 #include <android/asset_manager.h>
 #include <android/log.h>
 #include <stdio.h>
diff --git a/platform/android/file_access_jandroid.cpp b/platform/android/file_access_jandroid.cpp
index 214e273d9b..573200bcf9 100644
--- a/platform/android/file_access_jandroid.cpp
+++ b/platform/android/file_access_jandroid.cpp
@@ -31,7 +31,7 @@
 #ifndef ANDROID_NATIVE_ACTIVITY
 
 #include "file_access_jandroid.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "thread_jandroid.h"
 #include <unistd.h>
 
diff --git a/platform/android/file_access_jandroid.h b/platform/android/file_access_jandroid.h
index 72f81ee02e..39c201ba85 100644
--- a/platform/android/file_access_jandroid.h
+++ b/platform/android/file_access_jandroid.h
@@ -33,8 +33,8 @@
 
 #ifndef ANDROID_NATIVE_ACTIVITY
 
+#include "core/os/file_access.h"
 #include "java_glue.h"
-#include "os/file_access.h"
 class FileAccessJAndroid : public FileAccess {
 
 	static jobject io;
diff --git a/platform/android/globals/global_defaults.cpp b/platform/android/globals/global_defaults.cpp
index a315f80452..efeb8598e5 100644
--- a/platform/android/globals/global_defaults.cpp
+++ b/platform/android/globals/global_defaults.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "global_defaults.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 
 void register_android_global_defaults() {
 }
diff --git a/platform/android/godot_android.cpp b/platform/android/godot_android.cpp
index 061e05f5ee..54692dc831 100644
--- a/platform/android/godot_android.cpp
+++ b/platform/android/godot_android.cpp
@@ -30,11 +30,11 @@
 
 #ifdef ANDROID_NATIVE_ACTIVITY
 
-#include "engine.h"
+#include "core/engine.h"
+#include "core/project_settings.h"
 #include "file_access_android.h"
 #include "main/main.h"
 #include "os_android.h"
-#include "project_settings.h"
 
 #include <EGL/egl.h>
 #include <android/log.h>
diff --git a/platform/android/java_class_wrapper.h b/platform/android/java_class_wrapper.h
index 648c147ca8..ea3760452f 100644
--- a/platform/android/java_class_wrapper.h
+++ b/platform/android/java_class_wrapper.h
@@ -31,7 +31,7 @@
 #ifndef JAVA_CLASS_WRAPPER_H
 #define JAVA_CLASS_WRAPPER_H
 
-#include "reference.h"
+#include "core/reference.h"
 #include <android/log.h>
 #include <jni.h>
 
diff --git a/platform/android/java_glue.cpp b/platform/android/java_glue.cpp
index 59218ecece..6cf49758bc 100644
--- a/platform/android/java_glue.cpp
+++ b/platform/android/java_glue.cpp
@@ -33,16 +33,16 @@
 #include "java_glue.h"
 #include "android/asset_manager_jni.h"
 #include "audio_driver_jandroid.h"
+#include "core/engine.h"
 #include "core/os/keyboard.h"
+#include "core/project_settings.h"
 #include "dir_access_jandroid.h"
-#include "engine.h"
 #include "file_access_android.h"
 #include "file_access_jandroid.h"
 #include "java_class_wrapper.h"
 #include "main/input_default.h"
 #include "main/main.h"
 #include "os_android.h"
-#include "project_settings.h"
 #include "thread_jandroid.h"
 #include <unistd.h>
 
diff --git a/platform/android/os_android.h b/platform/android/os_android.h
index 94976af43f..a3dec27a6f 100644
--- a/platform/android/os_android.h
+++ b/platform/android/os_android.h
@@ -33,10 +33,10 @@
 
 #include "audio_driver_jandroid.h"
 #include "audio_driver_opensl.h"
+#include "core/os/input.h"
+#include "core/os/main_loop.h"
 #include "drivers/unix/os_unix.h"
 #include "main/input_default.h"
-#include "os/input.h"
-#include "os/main_loop.h"
 //#include "power_android.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
diff --git a/platform/android/power_android.h b/platform/android/power_android.h
index f0d1bee1e2..c39764222e 100644
--- a/platform/android/power_android.h
+++ b/platform/android/power_android.h
@@ -31,7 +31,7 @@
 #ifndef PLATFORM_ANDROID_POWER_ANDROID_H_
 #define PLATFORM_ANDROID_POWER_ANDROID_H_
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include <android/native_window_jni.h>
 
 class power_android {
diff --git a/platform/android/thread_jandroid.cpp b/platform/android/thread_jandroid.cpp
index b13baf69c2..6795315e63 100644
--- a/platform/android/thread_jandroid.cpp
+++ b/platform/android/thread_jandroid.cpp
@@ -30,9 +30,9 @@
 
 #include "thread_jandroid.h"
 
+#include "core/os/memory.h"
 #include "core/safe_refcount.h"
-#include "os/memory.h"
-#include "script_language.h"
+#include "core/script_language.h"
 
 static pthread_key_t _create_thread_id_key() {
 	pthread_key_t key;
diff --git a/platform/android/thread_jandroid.h b/platform/android/thread_jandroid.h
index 2bb64f3db2..a57bc47e6d 100644
--- a/platform/android/thread_jandroid.h
+++ b/platform/android/thread_jandroid.h
@@ -35,7 +35,7 @@
 	@author Juan Linietsky <reduzio@gmail.com>
 */
 
-#include "os/thread.h"
+#include "core/os/thread.h"
 #include <jni.h>
 #include <pthread.h>
 #include <sys/types.h>
diff --git a/platform/haiku/audio_driver_media_kit.cpp b/platform/haiku/audio_driver_media_kit.cpp
index aeaf698015..7e68c01fad 100644
--- a/platform/haiku/audio_driver_media_kit.cpp
+++ b/platform/haiku/audio_driver_media_kit.cpp
@@ -32,7 +32,7 @@
 
 #ifdef MEDIA_KIT_ENABLED
 
-#include "project_settings.h"
+#include "core/project_settings.h"
 
 int32_t *AudioDriverMediaKit::samples_in = NULL;
 
diff --git a/platform/haiku/haiku_direct_window.cpp b/platform/haiku/haiku_direct_window.cpp
index 7eeb226167..150e90be65 100644
--- a/platform/haiku/haiku_direct_window.cpp
+++ b/platform/haiku/haiku_direct_window.cpp
@@ -30,10 +30,10 @@
 
 #include <UnicodeChar.h>
 
+#include "core/os/keyboard.h"
 #include "haiku_direct_window.h"
 #include "key_mapping_haiku.h"
 #include "main/main.h"
-#include "os/keyboard.h"
 
 HaikuDirectWindow::HaikuDirectWindow(BRect p_frame) :
 		BDirectWindow(p_frame, "Godot", B_TITLED_WINDOW, B_QUIT_ON_WINDOW_CLOSE) {
diff --git a/platform/haiku/key_mapping_haiku.cpp b/platform/haiku/key_mapping_haiku.cpp
index 28a282e25c..ebe8117d5d 100644
--- a/platform/haiku/key_mapping_haiku.cpp
+++ b/platform/haiku/key_mapping_haiku.cpp
@@ -30,8 +30,8 @@
 
 #include <InterfaceDefs.h>
 
+#include "core/os/keyboard.h"
 #include "key_mapping_haiku.h"
-#include "os/keyboard.h"
 
 struct _HaikuTranslatePair {
 	unsigned int keysym;
diff --git a/platform/iphone/export/export.cpp b/platform/iphone/export/export.cpp
index 008e213e5e..aae9d97a28 100644
--- a/platform/iphone/export/export.cpp
+++ b/platform/iphone/export/export.cpp
@@ -29,18 +29,18 @@
 /*************************************************************************/
 
 #include "export.h"
+#include "core/io/marshalls.h"
+#include "core/io/resource_saver.h"
+#include "core/io/zip_io.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 #include "editor/editor_export.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
-#include "io/marshalls.h"
-#include "io/resource_saver.h"
-#include "io/zip_io.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "platform/iphone/logo.gen.h"
-#include "project_settings.h"
 #include "string.h"
-#include "version.h"
 
 #include <sys/stat.h>
 
diff --git a/platform/iphone/globals/global_defaults.cpp b/platform/iphone/globals/global_defaults.cpp
index ccc90665c5..423f50995e 100644
--- a/platform/iphone/globals/global_defaults.cpp
+++ b/platform/iphone/globals/global_defaults.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "global_defaults.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 
 void register_iphone_global_defaults() {
 }
diff --git a/platform/iphone/godot_iphone.cpp b/platform/iphone/godot_iphone.cpp
index dacbf42087..f9b9654a8c 100644
--- a/platform/iphone/godot_iphone.cpp
+++ b/platform/iphone/godot_iphone.cpp
@@ -28,9 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/ustring.h"
 #include "main/main.h"
 #include "os_iphone.h"
-#include "ustring.h"
 
 #include <stdio.h>
 #include <string.h>
diff --git a/platform/iphone/os_iphone.h b/platform/iphone/os_iphone.h
index db2912ad93..64a3c6355a 100644
--- a/platform/iphone/os_iphone.h
+++ b/platform/iphone/os_iphone.h
@@ -33,9 +33,9 @@
 #ifndef OS_IPHONE_H
 #define OS_IPHONE_H
 
+#include "core/os/input.h"
 #include "drivers/coreaudio/audio_driver_coreaudio.h"
 #include "drivers/unix/os_unix.h"
-#include "os/input.h"
 
 #include "game_center.h"
 #include "icloud.h"
diff --git a/platform/iphone/platform_refcount.h b/platform/iphone/platform_refcount.h
index 94e4e5fa3b..34338d92e7 100644
--- a/platform/iphone/platform_refcount.h
+++ b/platform/iphone/platform_refcount.h
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "safe_refcount.h"
+#include "core/safe_refcount.h"
 
 #ifdef IPHONE_ENABLED
 
diff --git a/platform/iphone/sem_iphone.cpp b/platform/iphone/sem_iphone.cpp
index ec1337d63f..ebab9db8fa 100644
--- a/platform/iphone/sem_iphone.cpp
+++ b/platform/iphone/sem_iphone.cpp
@@ -70,7 +70,7 @@ void cgsem_destroy(cgsem_t *cgsem) {
 	close(cgsem->pipefd[0]);
 }
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 #include <errno.h>
 
 Error SemaphoreIphone::wait() {
diff --git a/platform/iphone/sem_iphone.h b/platform/iphone/sem_iphone.h
index ebd4e4ee43..3edc4492eb 100644
--- a/platform/iphone/sem_iphone.h
+++ b/platform/iphone/sem_iphone.h
@@ -37,7 +37,7 @@ struct cgsem {
 
 typedef struct cgsem cgsem_t;
 
-#include "os/semaphore.h"
+#include "core/os/semaphore.h"
 
 class SemaphoreIphone : public Semaphore {
 
diff --git a/platform/javascript/api/api.cpp b/platform/javascript/api/api.cpp
index b377ca4e52..c7a6d53561 100644
--- a/platform/javascript/api/api.cpp
+++ b/platform/javascript/api/api.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "api.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "javascript_eval.h"
 
 static JavaScript *javascript_eval;
diff --git a/platform/javascript/api/javascript_eval.h b/platform/javascript/api/javascript_eval.h
index 05f7c9f38a..49d5309737 100644
--- a/platform/javascript/api/javascript_eval.h
+++ b/platform/javascript/api/javascript_eval.h
@@ -31,7 +31,7 @@
 #ifndef JAVASCRIPT_EVAL_H
 #define JAVASCRIPT_EVAL_H
 
-#include "object.h"
+#include "core/object.h"
 
 class JavaScript : public Object {
 private:
diff --git a/platform/javascript/dom_keys.inc b/platform/javascript/dom_keys.inc
index dc8d67d52b..a30818decc 100644
--- a/platform/javascript/dom_keys.inc
+++ b/platform/javascript/dom_keys.inc
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode#Constants_for_keyCode_value
 #define DOM_VK_CANCEL 0x03
diff --git a/platform/javascript/export/export.cpp b/platform/javascript/export/export.cpp
index a7f0084562..1e47d8db95 100644
--- a/platform/javascript/export/export.cpp
+++ b/platform/javascript/export/export.cpp
@@ -28,9 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/io/zip_io.h"
 #include "editor/editor_node.h"
 #include "editor_export.h"
-#include "io/zip_io.h"
 #include "main/splash.gen.h"
 #include "platform/javascript/logo.gen.h"
 #include "platform/javascript/run_icon.gen.h"
diff --git a/platform/javascript/http_client_javascript.cpp b/platform/javascript/http_client_javascript.cpp
index 8d90e01ae1..4fb41d4dc9 100644
--- a/platform/javascript/http_client_javascript.cpp
+++ b/platform/javascript/http_client_javascript.cpp
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/io/http_client.h"
 #include "http_request.h"
-#include "io/http_client.h"
 
 Error HTTPClient::connect_to_host(const String &p_host, int p_port, bool p_ssl, bool p_verify_host) {
 
diff --git a/platform/javascript/javascript_main.cpp b/platform/javascript/javascript_main.cpp
index 3829e8d406..ec60571402 100644
--- a/platform/javascript/javascript_main.cpp
+++ b/platform/javascript/javascript_main.cpp
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "main/main.h"
 #include "os_javascript.h"
 
diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index a7a26411b7..3c99f37bb5 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -30,9 +30,9 @@
 
 #include "os_javascript.h"
 
+#include "core/io/file_access_buffered_fa.h"
 #include "gles2/rasterizer_gles2.h"
 #include "gles3/rasterizer_gles3.h"
-#include "io/file_access_buffered_fa.h"
 #include "main/main.h"
 #include "servers/visual/visual_server_raster.h"
 #include "unix/dir_access_unix.h"
diff --git a/platform/osx/crash_handler_osx.mm b/platform/osx/crash_handler_osx.mm
index 1664c5ce8e..9ad3437f0f 100644
--- a/platform/osx/crash_handler_osx.mm
+++ b/platform/osx/crash_handler_osx.mm
@@ -28,9 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/project_settings.h"
 #include "main/main.h"
 #include "os_osx.h"
-#include "project_settings.h"
 
 #include <string.h>
 #include <unistd.h>
diff --git a/platform/osx/dir_access_osx.h b/platform/osx/dir_access_osx.h
index e01ff2fe4d..a9d6d63a8e 100644
--- a/platform/osx/dir_access_osx.h
+++ b/platform/osx/dir_access_osx.h
@@ -38,8 +38,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include "core/os/dir_access.h"
 #include "drivers/unix/dir_access_unix.h"
-#include "os/dir_access.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/platform/osx/export/export.cpp b/platform/osx/export/export.cpp
index 880705b507..b0232e2990 100644
--- a/platform/osx/export/export.cpp
+++ b/platform/osx/export/export.cpp
@@ -29,18 +29,18 @@
 /*************************************************************************/
 
 #include "export.h"
+#include "core/io/marshalls.h"
+#include "core/io/resource_saver.h"
+#include "core/io/zip_io.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 #include "editor/editor_export.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
-#include "io/marshalls.h"
-#include "io/resource_saver.h"
-#include "io/zip_io.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "platform/osx/logo.gen.h"
-#include "project_settings.h"
 #include "string.h"
-#include "version.h"
 #include <sys/stat.h>
 
 class EditorExportPlatformOSX : public EditorExportPlatform {
diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index 686e3f8c90..6fd52f09d1 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -31,13 +31,13 @@
 #ifndef OS_OSX_H
 #define OS_OSX_H
 
+#include "core/os/input.h"
 #include "crash_handler_osx.h"
 #include "drivers/coreaudio/audio_driver_coreaudio.h"
 #include "drivers/coremidi/core_midi.h"
 #include "drivers/unix/os_unix.h"
 #include "joypad_osx.h"
 #include "main/input_default.h"
-#include "os/input.h"
 #include "power_osx.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index 44b4223a65..c0de4e3f2a 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -30,15 +30,15 @@
 
 #include "os_osx.h"
 
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
+#include "core/version_generated.gen.h"
 #include "dir_access_osx.h"
 #include "drivers/gles2/rasterizer_gles2.h"
 #include "drivers/gles3/rasterizer_gles3.h"
 #include "main/main.h"
-#include "os/keyboard.h"
-#include "print_string.h"
 #include "sem_osx.h"
 #include "servers/visual/visual_server_raster.h"
-#include "version_generated.gen.h"
 
 #include <mach-o/dyld.h>
 
diff --git a/platform/osx/power_osx.h b/platform/osx/power_osx.h
index 7123e34a03..9ad51e505b 100644
--- a/platform/osx/power_osx.h
+++ b/platform/osx/power_osx.h
@@ -31,9 +31,9 @@
 #ifndef PLATFORM_OSX_POWER_OSX_H_
 #define PLATFORM_OSX_POWER_OSX_H_
 
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "dir_access_osx.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include <CoreFoundation/CoreFoundation.h>
 
 class power_osx {
diff --git a/platform/osx/sem_osx.cpp b/platform/osx/sem_osx.cpp
index 92f749322e..9b42abdb8d 100644
--- a/platform/osx/sem_osx.cpp
+++ b/platform/osx/sem_osx.cpp
@@ -65,7 +65,7 @@ void cgsem_destroy(cgsem_t *cgsem) {
 	close(cgsem->pipefd[0]);
 }
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 #include <errno.h>
 
 Error SemaphoreOSX::wait() {
diff --git a/platform/osx/sem_osx.h b/platform/osx/sem_osx.h
index ce31e966b7..0ab82873c6 100644
--- a/platform/osx/sem_osx.h
+++ b/platform/osx/sem_osx.h
@@ -37,7 +37,7 @@ struct cgsem {
 
 typedef struct cgsem cgsem_t;
 
-#include "os/semaphore.h"
+#include "core/os/semaphore.h"
 
 class SemaphoreOSX : public Semaphore {
 
diff --git a/platform/server/os_server.cpp b/platform/server/os_server.cpp
index 1c17780ad7..1069d6bbed 100644
--- a/platform/server/os_server.cpp
+++ b/platform/server/os_server.cpp
@@ -29,10 +29,10 @@
 /*************************************************************************/
 #include "os_server.h"
 
+#include "core/print_string.h"
 #include "drivers/dummy/audio_driver_dummy.h"
 #include "drivers/dummy/rasterizer_dummy.h"
 #include "drivers/dummy/texture_loader_dummy.h"
-#include "print_string.h"
 #include "servers/visual/visual_server_raster.h"
 
 #include "main/main.h"
diff --git a/platform/uwp/export/export.cpp b/platform/uwp/export/export.cpp
index 1ad5293b44..6a7284f770 100644
--- a/platform/uwp/export/export.cpp
+++ b/platform/uwp/export/export.cpp
@@ -29,16 +29,16 @@
 /*************************************************************************/
 
 #include "export.h"
-#include "bind/core_bind.h"
+#include "core/bind/core_bind.h"
+#include "core/io/marshalls.h"
+#include "core/io/zip_io.h"
+#include "core/object.h"
+#include "core/os/file_access.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 #include "editor/editor_export.h"
 #include "editor/editor_node.h"
-#include "io/marshalls.h"
-#include "io/zip_io.h"
-#include "object.h"
-#include "os/file_access.h"
 #include "platform/uwp/logo.gen.h"
-#include "project_settings.h"
-#include "version.h"
 
 #include "thirdparty/minizip/unzip.h"
 #include "thirdparty/minizip/zip.h"
diff --git a/platform/uwp/gl_context_egl.h b/platform/uwp/gl_context_egl.h
index df0108c124..3e3c4a0f57 100644
--- a/platform/uwp/gl_context_egl.h
+++ b/platform/uwp/gl_context_egl.h
@@ -34,9 +34,9 @@
 #include <wrl.h>
 
 #include "EGL/egl.h"
+#include "core/error_list.h"
+#include "core/os/os.h"
 #include "drivers/gl_context/context_gl.h"
-#include "error_list.h"
-#include "os/os.h"
 
 using namespace Windows::UI::Core;
 
diff --git a/platform/uwp/os_uwp.cpp b/platform/uwp/os_uwp.cpp
index b2eb3450e2..df444c1eb7 100644
--- a/platform/uwp/os_uwp.cpp
+++ b/platform/uwp/os_uwp.cpp
@@ -30,6 +30,8 @@
 
 #include "os_uwp.h"
 
+#include "core/io/marshalls.h"
+#include "core/project_settings.h"
 #include "drivers/gles2/rasterizer_gles2.h"
 #include "drivers/gles3/rasterizer_gles3.h"
 #include "drivers/unix/ip_unix.h"
@@ -41,10 +43,8 @@
 #include "drivers/windows/semaphore_windows.h"
 #include "drivers/windows/stream_peer_tcp_winsock.h"
 #include "drivers/windows/tcp_server_winsock.h"
-#include "io/marshalls.h"
 #include "main/main.h"
 #include "platform/windows/windows_terminal_logger.h"
-#include "project_settings.h"
 #include "servers/audio_server.h"
 #include "servers/visual/visual_server_raster.h"
 #include "thread_uwp.h"
diff --git a/platform/uwp/os_uwp.h b/platform/uwp/os_uwp.h
index 89f71f0013..574e152d52 100644
--- a/platform/uwp/os_uwp.h
+++ b/platform/uwp/os_uwp.h
@@ -32,13 +32,13 @@
 #define OSUWP_H
 
 #include "core/math/transform_2d.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
 #include "core/ustring.h"
 #include "drivers/xaudio2/audio_driver_xaudio2.h"
 #include "gl_context_egl.h"
 #include "joypad_uwp.h"
 #include "main/input_default.h"
-#include "os/input.h"
-#include "os/os.h"
 #include "power_uwp.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
diff --git a/platform/uwp/power_uwp.h b/platform/uwp/power_uwp.h
index 09572a15f4..da1cffe8f0 100644
--- a/platform/uwp/power_uwp.h
+++ b/platform/uwp/power_uwp.h
@@ -31,9 +31,9 @@
 #ifndef PLATFORM_UWP_POWER_UWP_H_
 #define PLATFORM_UWP_POWER_UWP_H_
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 
 class PowerUWP {
 
diff --git a/platform/uwp/thread_uwp.cpp b/platform/uwp/thread_uwp.cpp
index 25cd29190f..c755204ec4 100644
--- a/platform/uwp/thread_uwp.cpp
+++ b/platform/uwp/thread_uwp.cpp
@@ -30,7 +30,7 @@
 
 #include "thread_uwp.h"
 
-#include "os/memory.h"
+#include "core/os/memory.h"
 
 Thread *ThreadUWP::create_func_uwp(ThreadCreateCallback p_callback, void *p_user, const Settings &) {
 
diff --git a/platform/uwp/thread_uwp.h b/platform/uwp/thread_uwp.h
index 89081f3b2b..16e7efb60b 100644
--- a/platform/uwp/thread_uwp.h
+++ b/platform/uwp/thread_uwp.h
@@ -33,7 +33,7 @@
 
 #ifdef UWP_ENABLED
 
-#include "os/thread.h"
+#include "core/os/thread.h"
 
 #include <thread>
 
diff --git a/platform/windows/context_gl_win.h b/platform/windows/context_gl_win.h
index e7578a1aeb..af2f89568e 100644
--- a/platform/windows/context_gl_win.h
+++ b/platform/windows/context_gl_win.h
@@ -35,9 +35,9 @@
 #ifndef CONTEXT_GL_WIN_H
 #define CONTEXT_GL_WIN_H
 
+#include "core/error_list.h"
+#include "core/os/os.h"
 #include "drivers/gl_context/context_gl.h"
-#include "error_list.h"
-#include "os/os.h"
 
 #include <windows.h>
 
diff --git a/platform/windows/crash_handler_win.cpp b/platform/windows/crash_handler_win.cpp
index 76a227c608..2760e87b8b 100644
--- a/platform/windows/crash_handler_win.cpp
+++ b/platform/windows/crash_handler_win.cpp
@@ -28,9 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/project_settings.h"
 #include "main/main.h"
 #include "os_windows.h"
-#include "project_settings.h"
 
 #ifdef CRASH_HANDLER_EXCEPTION
 
diff --git a/platform/windows/export/export.cpp b/platform/windows/export/export.cpp
index 38fd6366c7..dcaae40b10 100644
--- a/platform/windows/export/export.cpp
+++ b/platform/windows/export/export.cpp
@@ -28,10 +28,10 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "editor/editor_export.h"
 #include "editor/editor_settings.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "platform/windows/logo.gen.h"
 
 class EditorExportPlatformWindows : public EditorExportPlatformPC {
diff --git a/platform/windows/key_mapping_win.h b/platform/windows/key_mapping_win.h
index 8d6461f27d..340f916e1c 100644
--- a/platform/windows/key_mapping_win.h
+++ b/platform/windows/key_mapping_win.h
@@ -31,7 +31,7 @@
 #ifndef KEY_MAPPING_WINDOWS_H
 #define KEY_MAPPING_WINDOWS_H
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 #include <windows.h>
 
diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index e224a52b04..ef6c4c21eb 100644
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -30,6 +30,8 @@
 
 #include "os_windows.h"
 
+#include "core/io/marshalls.h"
+#include "core/version_generated.gen.h"
 #include "drivers/gles2/rasterizer_gles2.h"
 #include "drivers/gles3/rasterizer_gles3.h"
 #include "drivers/windows/dir_access_windows.h"
@@ -41,14 +43,12 @@
 #include "drivers/windows/stream_peer_tcp_winsock.h"
 #include "drivers/windows/tcp_server_winsock.h"
 #include "drivers/windows/thread_windows.h"
-#include "io/marshalls.h"
 #include "joypad.h"
 #include "lang_table.h"
 #include "main/main.h"
 #include "servers/audio_server.h"
 #include "servers/visual/visual_server_raster.h"
 #include "servers/visual/visual_server_wrap_mt.h"
-#include "version_generated.gen.h"
 #include "windows_terminal_logger.h"
 
 #include <process.h>
diff --git a/platform/windows/os_windows.h b/platform/windows/os_windows.h
index c9fa46052a..0abede5b10 100644
--- a/platform/windows/os_windows.h
+++ b/platform/windows/os_windows.h
@@ -31,13 +31,13 @@
 #ifndef OS_WINDOWS_H
 #define OS_WINDOWS_H
 #include "context_gl_win.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
 #include "core/project_settings.h"
 #include "crash_handler_win.h"
 #include "drivers/rtaudio/audio_driver_rtaudio.h"
 #include "drivers/wasapi/audio_driver_wasapi.h"
 #include "drivers/winmidi/win_midi.h"
-#include "os/input.h"
-#include "os/os.h"
 #include "power_windows.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
diff --git a/platform/windows/power_windows.h b/platform/windows/power_windows.h
index 1c1a8c0876..4984b473ca 100644
--- a/platform/windows/power_windows.h
+++ b/platform/windows/power_windows.h
@@ -31,9 +31,9 @@
 #ifndef PLATFORM_WINDOWS_POWER_WINDOWS_H_
 #define PLATFORM_WINDOWS_POWER_WINDOWS_H_
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 
 #include <windows.h>
 
diff --git a/platform/windows/windows_terminal_logger.h b/platform/windows/windows_terminal_logger.h
index 1ad2bcb0fd..1cd1941b8a 100644
--- a/platform/windows/windows_terminal_logger.h
+++ b/platform/windows/windows_terminal_logger.h
@@ -33,7 +33,7 @@
 
 #ifdef WINDOWS_ENABLED
 
-#include "io/logger.h"
+#include "core/io/logger.h"
 
 class WindowsTerminalLogger : public StdLogger {
 public:
@@ -44,4 +44,4 @@ public:
 
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/platform/x11/context_gl_x11.h b/platform/x11/context_gl_x11.h
index b8f3eb95d4..ab0379a2fe 100644
--- a/platform/x11/context_gl_x11.h
+++ b/platform/x11/context_gl_x11.h
@@ -38,8 +38,8 @@
 
 #if defined(OPENGL_ENABLED)
 
+#include "core/os/os.h"
 #include "drivers/gl_context/context_gl.h"
-#include "os/os.h"
 #include <X11/Xlib.h>
 #include <X11/extensions/Xrender.h>
 
diff --git a/platform/x11/crash_handler_x11.cpp b/platform/x11/crash_handler_x11.cpp
index 960105271b..ab9275e49f 100644
--- a/platform/x11/crash_handler_x11.cpp
+++ b/platform/x11/crash_handler_x11.cpp
@@ -33,9 +33,9 @@
 #endif
 
 #include "crash_handler_x11.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "main/main.h"
-#include "os/os.h"
-#include "project_settings.h"
 
 #ifdef CRASH_HANDLER_ENABLED
 #include <cxxabi.h>
diff --git a/platform/x11/joypad_linux.h b/platform/x11/joypad_linux.h
index 1187acac23..34b240abf1 100644
--- a/platform/x11/joypad_linux.h
+++ b/platform/x11/joypad_linux.h
@@ -33,9 +33,9 @@
 #define JOYPAD_LINUX_H
 
 #ifdef JOYDEV_ENABLED
+#include "core/os/mutex.h"
+#include "core/os/thread.h"
 #include "main/input_default.h"
-#include "os/mutex.h"
-#include "os/thread.h"
 
 struct input_absinfo;
 
diff --git a/platform/x11/key_mapping_x11.h b/platform/x11/key_mapping_x11.h
index 62dfcf3a4d..6f05941c19 100644
--- a/platform/x11/key_mapping_x11.h
+++ b/platform/x11/key_mapping_x11.h
@@ -41,7 +41,7 @@
 #define XK_XKB_KEYS
 #include <X11/keysymdef.h>
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 class KeyMappingX11 {
 	KeyMappingX11(){};
diff --git a/platform/x11/os_x11.cpp b/platform/x11/os_x11.cpp
index a57a8c6bb9..e7639275fe 100644
--- a/platform/x11/os_x11.cpp
+++ b/platform/x11/os_x11.cpp
@@ -29,12 +29,12 @@
 /*************************************************************************/
 
 #include "os_x11.h"
+#include "core/os/dir_access.h"
+#include "core/print_string.h"
 #include "drivers/gles2/rasterizer_gles2.h"
 #include "drivers/gles3/rasterizer_gles3.h"
 #include "errno.h"
 #include "key_mapping_x11.h"
-#include "os/dir_access.h"
-#include "print_string.h"
 #include "servers/visual/visual_server_raster.h"
 #include "servers/visual/visual_server_wrap_mt.h"
 
diff --git a/platform/x11/os_x11.h b/platform/x11/os_x11.h
index 44455a2d8d..750e56ea92 100644
--- a/platform/x11/os_x11.h
+++ b/platform/x11/os_x11.h
@@ -32,9 +32,9 @@
 #define OS_X11_H
 
 #include "context_gl_x11.h"
+#include "core/os/input.h"
 #include "crash_handler_x11.h"
 #include "drivers/unix/os_unix.h"
-#include "os/input.h"
 #include "servers/visual_server.h"
 //#include "servers/visual/visual_server_wrap_mt.h"
 #include "drivers/alsa/audio_driver_alsa.h"
diff --git a/platform/x11/power_x11.h b/platform/x11/power_x11.h
index 4077887998..d0805b6f8a 100644
--- a/platform/x11/power_x11.h
+++ b/platform/x11/power_x11.h
@@ -31,9 +31,9 @@
 #ifndef X11_POWER_H_
 #define X11_POWER_H_
 
-#include "os/dir_access.h"
-#include "os/file_access.h"
-#include "os/os.h"
+#include "core/os/dir_access.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 
 class PowerX11 {
 
diff --git a/scene/2d/animated_sprite.cpp b/scene/2d/animated_sprite.cpp
index 85e7f8df92..a33fc844a5 100644
--- a/scene/2d/animated_sprite.cpp
+++ b/scene/2d/animated_sprite.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "animated_sprite.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/scene_string_names.h"
 
 #define NORMAL_SUFFIX "_normal"
diff --git a/scene/2d/area_2d.h b/scene/2d/area_2d.h
index 0fda9b867d..cd60b6c1e1 100644
--- a/scene/2d/area_2d.h
+++ b/scene/2d/area_2d.h
@@ -31,8 +31,8 @@
 #ifndef AREA_2D_H
 #define AREA_2D_H
 
+#include "core/vset.h"
 #include "scene/2d/collision_object_2d.h"
-#include "vset.h"
 
 class Area2D : public CollisionObject2D {
 
diff --git a/scene/2d/audio_stream_player_2d.cpp b/scene/2d/audio_stream_player_2d.cpp
index 559e041dbf..a1ae05d971 100644
--- a/scene/2d/audio_stream_player_2d.cpp
+++ b/scene/2d/audio_stream_player_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "audio_stream_player_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/2d/area_2d.h"
 #include "scene/main/viewport.h"
 
diff --git a/scene/2d/canvas_item.cpp b/scene/2d/canvas_item.cpp
index 3914c75ca8..fab0b7d433 100644
--- a/scene/2d/canvas_item.cpp
+++ b/scene/2d/canvas_item.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "canvas_item.h"
+#include "core/message_queue.h"
 #include "core/method_bind_ext.gen.inc"
-#include "message_queue.h"
-#include "os/input.h"
+#include "core/os/input.h"
 #include "scene/main/canvas_layer.h"
 #include "scene/main/viewport.h"
 #include "scene/resources/font.h"
diff --git a/scene/2d/collision_polygon_2d.cpp b/scene/2d/collision_polygon_2d.cpp
index 9f19f56e75..508ceeaaf9 100644
--- a/scene/2d/collision_polygon_2d.cpp
+++ b/scene/2d/collision_polygon_2d.cpp
@@ -31,7 +31,7 @@
 #include "collision_polygon_2d.h"
 
 #include "collision_object_2d.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/resources/concave_polygon_shape_2d.h"
 #include "scene/resources/convex_polygon_shape_2d.h"
 
diff --git a/scene/2d/collision_shape_2d.cpp b/scene/2d/collision_shape_2d.cpp
index ff5f7062c4..cb9c8ecf95 100644
--- a/scene/2d/collision_shape_2d.cpp
+++ b/scene/2d/collision_shape_2d.cpp
@@ -31,7 +31,7 @@
 #include "collision_shape_2d.h"
 
 #include "collision_object_2d.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/resources/capsule_shape_2d.h"
 #include "scene/resources/circle_shape_2d.h"
 #include "scene/resources/concave_polygon_shape_2d.h"
diff --git a/scene/2d/cpu_particles_2d.h b/scene/2d/cpu_particles_2d.h
index dbe9f59748..4f51eb1062 100644
--- a/scene/2d/cpu_particles_2d.h
+++ b/scene/2d/cpu_particles_2d.h
@@ -31,7 +31,7 @@
 #ifndef CPU_PARTICLES_2D_H
 #define CPU_PARTICLES_2D_H
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/2d/node_2d.h"
 #include "scene/resources/texture.h"
 
diff --git a/scene/2d/joints_2d.cpp b/scene/2d/joints_2d.cpp
index 7d5360c0e4..b9a48e1fdc 100644
--- a/scene/2d/joints_2d.cpp
+++ b/scene/2d/joints_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "joints_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "physics_body_2d.h"
 #include "servers/physics_2d_server.h"
 
diff --git a/scene/2d/light_2d.cpp b/scene/2d/light_2d.cpp
index 4d24daa5a7..e6a5a0b651 100644
--- a/scene/2d/light_2d.cpp
+++ b/scene/2d/light_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "light_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "servers/visual_server.h"
 
 Dictionary Light2D::_edit_get_state() const {
diff --git a/scene/2d/light_occluder_2d.cpp b/scene/2d/light_occluder_2d.cpp
index c9e5d0f1bc..ab15b49985 100644
--- a/scene/2d/light_occluder_2d.cpp
+++ b/scene/2d/light_occluder_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "light_occluder_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void OccluderPolygon2D::set_polygon(const PoolVector<Vector2> &p_polygon) {
 
diff --git a/scene/2d/line_2d.cpp b/scene/2d/line_2d.cpp
index ad9775c0b7..e164f0ca75 100644
--- a/scene/2d/line_2d.cpp
+++ b/scene/2d/line_2d.cpp
@@ -31,7 +31,7 @@
 #include "line_2d.h"
 #include "line_builder.h"
 
-#include "core_string_names.h"
+#include "core/core_string_names.h"
 
 // Needed so we can bind functions
 VARIANT_ENUM_CAST(Line2D::LineJointMode)
diff --git a/scene/2d/line_builder.h b/scene/2d/line_builder.h
index edfdf97c47..f9d26f12af 100644
--- a/scene/2d/line_builder.h
+++ b/scene/2d/line_builder.h
@@ -31,10 +31,10 @@
 #ifndef LINE_BUILDER_H
 #define LINE_BUILDER_H
 
-#include "color.h"
+#include "core/color.h"
+#include "core/math/vector2.h"
 #include "line_2d.h"
 #include "scene/resources/color_ramp.h"
-#include "vector2.h"
 
 class LineBuilder {
 public:
diff --git a/scene/2d/navigation_polygon.cpp b/scene/2d/navigation_polygon.cpp
index 84b12b0bfe..b36924e521 100644
--- a/scene/2d/navigation_polygon.cpp
+++ b/scene/2d/navigation_polygon.cpp
@@ -30,8 +30,8 @@
 
 #include "navigation_polygon.h"
 
-#include "core_string_names.h"
-#include "engine.h"
+#include "core/core_string_names.h"
+#include "core/engine.h"
 #include "navigation2d.h"
 
 #include "thirdparty/misc/triangulator.h"
diff --git a/scene/2d/node_2d.cpp b/scene/2d/node_2d.cpp
index 7de72dc41d..29065a89b3 100644
--- a/scene/2d/node_2d.cpp
+++ b/scene/2d/node_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "node_2d.h"
 
-#include "message_queue.h"
+#include "core/message_queue.h"
 #include "scene/gui/control.h"
 #include "scene/main/viewport.h"
 #include "servers/visual_server.h"
diff --git a/scene/2d/parallax_layer.cpp b/scene/2d/parallax_layer.cpp
index 2ac6c76032..06de723f27 100644
--- a/scene/2d/parallax_layer.cpp
+++ b/scene/2d/parallax_layer.cpp
@@ -30,7 +30,7 @@
 
 #include "parallax_layer.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "parallax_background.h"
 
 void ParallaxLayer::set_motion_scale(const Size2 &p_scale) {
diff --git a/scene/2d/particles_2d.h b/scene/2d/particles_2d.h
index 816149ba79..af673841b1 100644
--- a/scene/2d/particles_2d.h
+++ b/scene/2d/particles_2d.h
@@ -31,7 +31,7 @@
 #ifndef PARTICLES_2D_H
 #define PARTICLES_2D_H
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/2d/node_2d.h"
 #include "scene/resources/texture.h"
 
diff --git a/scene/2d/path_2d.cpp b/scene/2d/path_2d.cpp
index 658b998d17..cdb208e6cd 100644
--- a/scene/2d/path_2d.cpp
+++ b/scene/2d/path_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "path_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/scene_string_names.h"
 
 #ifdef TOOLS_ENABLED
diff --git a/scene/2d/physics_body_2d.cpp b/scene/2d/physics_body_2d.cpp
index dc93414669..d0bebd3354 100644
--- a/scene/2d/physics_body_2d.cpp
+++ b/scene/2d/physics_body_2d.cpp
@@ -31,9 +31,9 @@
 #include "physics_body_2d.h"
 
 #include "core/core_string_names.h"
+#include "core/engine.h"
+#include "core/math/math_funcs.h"
 #include "core/method_bind_ext.gen.inc"
-#include "engine.h"
-#include "math_funcs.h"
 #include "scene/scene_string_names.h"
 
 void PhysicsBody2D::_notification(int p_what) {
diff --git a/scene/2d/physics_body_2d.h b/scene/2d/physics_body_2d.h
index 852963a721..29befb0375 100644
--- a/scene/2d/physics_body_2d.h
+++ b/scene/2d/physics_body_2d.h
@@ -31,10 +31,10 @@
 #ifndef PHYSICS_BODY_2D_H
 #define PHYSICS_BODY_2D_H
 
+#include "core/vset.h"
 #include "scene/2d/collision_object_2d.h"
 #include "scene/resources/physics_material.h"
 #include "servers/physics_2d_server.h"
-#include "vset.h"
 
 class KinematicCollision2D;
 
diff --git a/scene/2d/position_2d.cpp b/scene/2d/position_2d.cpp
index 64d23719e7..543314eefa 100644
--- a/scene/2d/position_2d.cpp
+++ b/scene/2d/position_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "position_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/resources/texture.h"
 
 void Position2D::_draw_cross() {
diff --git a/scene/2d/ray_cast_2d.cpp b/scene/2d/ray_cast_2d.cpp
index d9b3cb07fc..f7c18a17df 100644
--- a/scene/2d/ray_cast_2d.cpp
+++ b/scene/2d/ray_cast_2d.cpp
@@ -31,7 +31,7 @@
 #include "ray_cast_2d.h"
 
 #include "collision_object_2d.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "physics_body_2d.h"
 #include "servers/physics_2d_server.h"
 
diff --git a/scene/2d/screen_button.cpp b/scene/2d/screen_button.cpp
index 45f63fd5bf..44a41328e8 100644
--- a/scene/2d/screen_button.cpp
+++ b/scene/2d/screen_button.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "screen_button.h"
-#include "input_map.h"
-#include "os/input.h"
-#include "os/os.h"
+#include "core/input_map.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
 
 void TouchScreenButton::set_texture(const Ref<Texture> &p_texture) {
 
diff --git a/scene/2d/sprite.cpp b/scene/2d/sprite.cpp
index bb5990fa79..04e199a21b 100644
--- a/scene/2d/sprite.cpp
+++ b/scene/2d/sprite.cpp
@@ -30,7 +30,7 @@
 
 #include "sprite.h"
 #include "core/core_string_names.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/main/viewport.h"
 #include "scene/scene_string_names.h"
 
diff --git a/scene/2d/tile_map.cpp b/scene/2d/tile_map.cpp
index 8a2fdbacfa..71bd51507e 100644
--- a/scene/2d/tile_map.cpp
+++ b/scene/2d/tile_map.cpp
@@ -30,9 +30,9 @@
 
 #include "tile_map.h"
 
-#include "io/marshalls.h"
-#include "method_bind_ext.gen.inc"
-#include "os/os.h"
+#include "core/io/marshalls.h"
+#include "core/method_bind_ext.gen.inc"
+#include "core/os/os.h"
 #include "servers/physics_2d_server.h"
 
 int TileMap::_get_quadrant_size() const {
diff --git a/scene/2d/tile_map.h b/scene/2d/tile_map.h
index 55db33837f..499c79b180 100644
--- a/scene/2d/tile_map.h
+++ b/scene/2d/tile_map.h
@@ -31,11 +31,11 @@
 #ifndef TILE_MAP_H
 #define TILE_MAP_H
 
+#include "core/self_list.h"
+#include "core/vset.h"
 #include "scene/2d/navigation2d.h"
 #include "scene/2d/node_2d.h"
 #include "scene/resources/tile_set.h"
-#include "self_list.h"
-#include "vset.h"
 
 class TileMap : public Node2D {
 
diff --git a/scene/2d/visibility_notifier_2d.cpp b/scene/2d/visibility_notifier_2d.cpp
index ddca97e60a..7d7c47619a 100644
--- a/scene/2d/visibility_notifier_2d.cpp
+++ b/scene/2d/visibility_notifier_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "visibility_notifier_2d.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "particles_2d.h"
 #include "scene/2d/animated_sprite.h"
 #include "scene/2d/physics_body_2d.h"
diff --git a/scene/3d/area.h b/scene/3d/area.h
index e49b7e493b..e1ff1079e3 100644
--- a/scene/3d/area.h
+++ b/scene/3d/area.h
@@ -31,8 +31,8 @@
 #ifndef AREA_H
 #define AREA_H
 
+#include "core/vset.h"
 #include "scene/3d/collision_object.h"
-#include "vset.h"
 
 class Area : public CollisionObject {
 
diff --git a/scene/3d/audio_stream_player_3d.cpp b/scene/3d/audio_stream_player_3d.cpp
index 8504a18f54..386f2a4348 100644
--- a/scene/3d/audio_stream_player_3d.cpp
+++ b/scene/3d/audio_stream_player_3d.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_stream_player_3d.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/3d/area.h"
 #include "scene/3d/camera.h"
 #include "scene/main/viewport.h"
diff --git a/scene/3d/baked_lightmap.cpp b/scene/3d/baked_lightmap.cpp
index 2cb59c871c..c58e318651 100644
--- a/scene/3d/baked_lightmap.cpp
+++ b/scene/3d/baked_lightmap.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "baked_lightmap.h"
-#include "io/resource_saver.h"
-#include "os/dir_access.h"
-#include "os/os.h"
+#include "core/io/resource_saver.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
 #include "voxel_light_baker.h"
 
 void BakedLightmapData::set_bounds(const AABB &p_bounds) {
diff --git a/scene/3d/camera.cpp b/scene/3d/camera.cpp
index 6ecf219c2b..8ef64e2e80 100644
--- a/scene/3d/camera.cpp
+++ b/scene/3d/camera.cpp
@@ -30,9 +30,9 @@
 
 #include "camera.h"
 
-#include "camera_matrix.h"
 #include "collision_object.h"
-#include "engine.h"
+#include "core/engine.h"
+#include "core/math/camera_matrix.h"
 #include "scene/resources/material.h"
 #include "scene/resources/surface_tool.h"
 void Camera::_update_audio_listener_state() {
diff --git a/scene/3d/collision_shape.cpp b/scene/3d/collision_shape.cpp
index 943f4158f7..4fd68fb47d 100644
--- a/scene/3d/collision_shape.cpp
+++ b/scene/3d/collision_shape.cpp
@@ -38,9 +38,9 @@
 #include "scene/resources/sphere_shape.h"
 #include "servers/visual_server.h"
 //TODO: Implement CylinderShape and HeightMapShape?
+#include "core/math/quick_hull.h"
 #include "mesh_instance.h"
 #include "physics_body.h"
-#include "quick_hull.h"
 
 void CollisionShape::make_convex_from_brothers() {
 
diff --git a/scene/3d/cpu_particles.h b/scene/3d/cpu_particles.h
index 47d0ef3f5e..4e29d8d4ce 100644
--- a/scene/3d/cpu_particles.h
+++ b/scene/3d/cpu_particles.h
@@ -31,7 +31,7 @@
 #ifndef CPU_PARTICLES_H
 #define CPU_PARTICLES_H
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/3d/visual_instance.h"
 
 /**
diff --git a/scene/3d/interpolated_camera.cpp b/scene/3d/interpolated_camera.cpp
index ffa283f634..93832f8e00 100644
--- a/scene/3d/interpolated_camera.cpp
+++ b/scene/3d/interpolated_camera.cpp
@@ -30,7 +30,7 @@
 
 #include "interpolated_camera.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void InterpolatedCamera::_notification(int p_what) {
 
diff --git a/scene/3d/light.cpp b/scene/3d/light.cpp
index 762e090590..80c2f005b6 100644
--- a/scene/3d/light.cpp
+++ b/scene/3d/light.cpp
@@ -30,8 +30,8 @@
 
 #include "light.h"
 
-#include "engine.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/project_settings.h"
 #include "scene/resources/surface_tool.h"
 
 bool Light::_can_gizmo_scale() const {
diff --git a/scene/3d/mesh_instance.cpp b/scene/3d/mesh_instance.cpp
index e277cae5b7..4cbf6f2de3 100644
--- a/scene/3d/mesh_instance.cpp
+++ b/scene/3d/mesh_instance.cpp
@@ -31,7 +31,7 @@
 #include "mesh_instance.h"
 
 #include "collision_shape.h"
-#include "core_string_names.h"
+#include "core/core_string_names.h"
 #include "physics_body.h"
 #include "scene/resources/material.h"
 #include "scene/scene_string_names.h"
diff --git a/scene/3d/particles.h b/scene/3d/particles.h
index 742246f78c..72241c5c89 100644
--- a/scene/3d/particles.h
+++ b/scene/3d/particles.h
@@ -31,7 +31,7 @@
 #ifndef PARTICLES_H
 #define PARTICLES_H
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/3d/visual_instance.h"
 #include "scene/resources/material.h"
 
diff --git a/scene/3d/path.cpp b/scene/3d/path.cpp
index 9acaa15641..e37efa0e8a 100644
--- a/scene/3d/path.cpp
+++ b/scene/3d/path.cpp
@@ -30,7 +30,7 @@
 
 #include "path.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/scene_string_names.h"
 
 void Path::_notification(int p_what) {
diff --git a/scene/3d/physics_body.cpp b/scene/3d/physics_body.cpp
index f7af6a57dd..d7bd89625f 100644
--- a/scene/3d/physics_body.cpp
+++ b/scene/3d/physics_body.cpp
@@ -31,8 +31,8 @@
 #include "physics_body.h"
 
 #include "core/core_string_names.h"
-#include "engine.h"
-#include "method_bind_ext.gen.inc"
+#include "core/engine.h"
+#include "core/method_bind_ext.gen.inc"
 #include "scene/scene_string_names.h"
 
 #ifdef TOOLS_ENABLED
diff --git a/scene/3d/physics_body.h b/scene/3d/physics_body.h
index c4db41f577..ca48b51ffb 100644
--- a/scene/3d/physics_body.h
+++ b/scene/3d/physics_body.h
@@ -31,11 +31,11 @@
 #ifndef PHYSICS_BODY__H
 #define PHYSICS_BODY__H
 
+#include "core/vset.h"
 #include "scene/3d/collision_object.h"
 #include "scene/resources/physics_material.h"
 #include "servers/physics_server.h"
 #include "skeleton.h"
-#include "vset.h"
 
 class PhysicsBody : public CollisionObject {
 
diff --git a/scene/3d/portal.cpp b/scene/3d/portal.cpp
index d16d9ed7c5..137338d79e 100644
--- a/scene/3d/portal.cpp
+++ b/scene/3d/portal.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "portal.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 #include "scene/resources/surface_tool.h"
 #include "servers/visual_server.h"
 
diff --git a/scene/3d/proximity_group.cpp b/scene/3d/proximity_group.cpp
index 101d9ed70c..f56f728d99 100644
--- a/scene/3d/proximity_group.cpp
+++ b/scene/3d/proximity_group.cpp
@@ -30,7 +30,7 @@
 
 #include "proximity_group.h"
 
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 
 void ProximityGroup::clear_groups() {
 
diff --git a/scene/3d/ray_cast.cpp b/scene/3d/ray_cast.cpp
index b846a5b6c0..17f069bbc8 100644
--- a/scene/3d/ray_cast.cpp
+++ b/scene/3d/ray_cast.cpp
@@ -31,7 +31,7 @@
 #include "ray_cast.h"
 
 #include "collision_object.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "mesh_instance.h"
 #include "servers/physics_server.h"
 
diff --git a/scene/3d/room_instance.cpp b/scene/3d/room_instance.cpp
index 0d83a9942e..3914d7190e 100644
--- a/scene/3d/room_instance.cpp
+++ b/scene/3d/room_instance.cpp
@@ -34,8 +34,8 @@
 
 // FIXME: Will be removed, kept as reference for new implementation
 #if 0
-#include "geometry.h"
-#include "project_settings.h"
+#include "core/math/geometry.h"
+#include "core/project_settings.h"
 #include "scene/resources/surface_tool.h"
 
 void Room::_notification(int p_what) {
diff --git a/scene/3d/skeleton.cpp b/scene/3d/skeleton.cpp
index c796e47f25..db82ef2a5c 100644
--- a/scene/3d/skeleton.cpp
+++ b/scene/3d/skeleton.cpp
@@ -30,7 +30,7 @@
 
 #include "skeleton.h"
 
-#include "message_queue.h"
+#include "core/message_queue.h"
 
 #include "core/project_settings.h"
 #include "scene/3d/physics_body.h"
diff --git a/scene/3d/skeleton.h b/scene/3d/skeleton.h
index e044e08437..07abdc1fe7 100644
--- a/scene/3d/skeleton.h
+++ b/scene/3d/skeleton.h
@@ -31,7 +31,7 @@
 #ifndef SKELETON_H
 #define SKELETON_H
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/3d/spatial.h"
 
 /**
diff --git a/scene/3d/soft_body.cpp b/scene/3d/soft_body.cpp
index 58ddb52760..4ebc941ebc 100644
--- a/scene/3d/soft_body.cpp
+++ b/scene/3d/soft_body.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "soft_body.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/3d/collision_object.h"
 #include "scene/3d/skeleton.h"
 #include "servers/physics_server.h"
diff --git a/scene/3d/spatial.cpp b/scene/3d/spatial.cpp
index d6141c12a8..fcc908cdc6 100644
--- a/scene/3d/spatial.cpp
+++ b/scene/3d/spatial.cpp
@@ -30,8 +30,8 @@
 
 #include "spatial.h"
 
-#include "engine.h"
-#include "message_queue.h"
+#include "core/engine.h"
+#include "core/message_queue.h"
 #include "scene/main/viewport.h"
 #include "scene/scene_string_names.h"
 
diff --git a/scene/3d/spatial_velocity_tracker.cpp b/scene/3d/spatial_velocity_tracker.cpp
index d96b003a81..3850a0c7e6 100644
--- a/scene/3d/spatial_velocity_tracker.cpp
+++ b/scene/3d/spatial_velocity_tracker.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "spatial_velocity_tracker.h"
-#include "engine.h"
+#include "core/engine.h"
 
 void SpatialVelocityTracker::set_track_physics_step(bool p_track_physics_step) {
 
diff --git a/scene/3d/spring_arm.cpp b/scene/3d/spring_arm.cpp
index 492c6b806e..818e7f9217 100644
--- a/scene/3d/spring_arm.cpp
+++ b/scene/3d/spring_arm.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "spring_arm.h"
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/3d/collision_object.h"
 #include "scene/resources/sphere_shape.h"
 #include "servers/physics_server.h"
diff --git a/scene/3d/sprite_3d.cpp b/scene/3d/sprite_3d.cpp
index 036a748c83..36c0dfc18a 100644
--- a/scene/3d/sprite_3d.cpp
+++ b/scene/3d/sprite_3d.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "sprite_3d.h"
-#include "core_string_names.h"
+#include "core/core_string_names.h"
 #include "scene/scene_string_names.h"
 
 Color SpriteBase3D::_get_color_accum() {
diff --git a/scene/3d/visibility_notifier.cpp b/scene/3d/visibility_notifier.cpp
index 9d6e4941f3..c69387d082 100644
--- a/scene/3d/visibility_notifier.cpp
+++ b/scene/3d/visibility_notifier.cpp
@@ -30,7 +30,7 @@
 
 #include "visibility_notifier.h"
 
-#include "engine.h"
+#include "core/engine.h"
 #include "scene/3d/camera.h"
 #include "scene/3d/physics_body.h"
 #include "scene/animation/animation_player.h"
diff --git a/scene/3d/visual_instance.h b/scene/3d/visual_instance.h
index 9249bc04ce..784f2a358a 100644
--- a/scene/3d/visual_instance.h
+++ b/scene/3d/visual_instance.h
@@ -31,8 +31,8 @@
 #ifndef VISUAL_INSTANCE_H
 #define VISUAL_INSTANCE_H
 
-#include "face3.h"
-#include "rid.h"
+#include "core/math/face3.h"
+#include "core/rid.h"
 #include "scene/3d/spatial.h"
 #include "scene/resources/material.h"
 /**
diff --git a/scene/3d/voxel_light_baker.cpp b/scene/3d/voxel_light_baker.cpp
index e846e1763d..651a057392 100644
--- a/scene/3d/voxel_light_baker.cpp
+++ b/scene/3d/voxel_light_baker.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "voxel_light_baker.h"
-#include "os/os.h"
-#include "os/threaded_array_processor.h"
+#include "core/os/os.h"
+#include "core/os/threaded_array_processor.h"
 
 #include <stdlib.h>
 
diff --git a/scene/animation/animation_blend_space_2d.cpp b/scene/animation/animation_blend_space_2d.cpp
index f3a76b950e..f5f899a6cd 100644
--- a/scene/animation/animation_blend_space_2d.cpp
+++ b/scene/animation/animation_blend_space_2d.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "animation_blend_space_2d.h"
-#include "math/delaunay.h"
+#include "core/math/delaunay.h"
 
 void AnimationNodeBlendSpace2D::get_parameter_list(List<PropertyInfo> *r_list) const {
 	r_list->push_back(PropertyInfo(Variant::VECTOR2, blend_position));
diff --git a/scene/animation/animation_player.cpp b/scene/animation/animation_player.cpp
index 460f62f092..2a4d526a7f 100644
--- a/scene/animation/animation_player.cpp
+++ b/scene/animation/animation_player.cpp
@@ -30,8 +30,8 @@
 
 #include "animation_player.h"
 
-#include "engine.h"
-#include "message_queue.h"
+#include "core/engine.h"
+#include "core/message_queue.h"
 #include "scene/scene_string_names.h"
 #include "servers/audio/audio_stream.h"
 #ifdef TOOLS_ENABLED
diff --git a/scene/animation/animation_tree.cpp b/scene/animation/animation_tree.cpp
index 9b06d538e9..7a4846e6d5 100644
--- a/scene/animation/animation_tree.cpp
+++ b/scene/animation/animation_tree.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "animation_tree.h"
+
 #include "animation_blend_tree.h"
+#include "core/engine.h"
 #include "core/method_bind_ext.gen.inc"
-#include "engine.h"
 #include "scene/scene_string_names.h"
 #include "servers/audio/audio_stream.h"
 
diff --git a/scene/animation/tween.cpp b/scene/animation/tween.cpp
index 58be636e44..074d36f6d9 100644
--- a/scene/animation/tween.cpp
+++ b/scene/animation/tween.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "tween.h"
-#include "method_bind_ext.gen.inc"
+
+#include "core/method_bind_ext.gen.inc"
 
 void Tween::_add_pending_command(StringName p_key, const Variant &p_arg1, const Variant &p_arg2, const Variant &p_arg3, const Variant &p_arg4, const Variant &p_arg5, const Variant &p_arg6, const Variant &p_arg7, const Variant &p_arg8, const Variant &p_arg9, const Variant &p_arg10) {
 
diff --git a/scene/audio/audio_player.cpp b/scene/audio/audio_player.cpp
index 7a9f2bd8d0..64af7efb16 100644
--- a/scene/audio/audio_player.cpp
+++ b/scene/audio/audio_player.cpp
@@ -30,7 +30,7 @@
 
 #include "audio_player.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void AudioStreamPlayer::_mix_internal(bool p_fadeout) {
 
diff --git a/scene/gui/base_button.cpp b/scene/gui/base_button.cpp
index d17ae1d84c..59590ea67b 100644
--- a/scene/gui/base_button.cpp
+++ b/scene/gui/base_button.cpp
@@ -30,7 +30,7 @@
 
 #include "base_button.h"
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 #include "scene/main/viewport.h"
 #include "scene/scene_string_names.h"
 
diff --git a/scene/gui/button.cpp b/scene/gui/button.cpp
index a34f2f1ad5..dd6d66ac62 100644
--- a/scene/gui/button.cpp
+++ b/scene/gui/button.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "button.h"
+#include "core/translation.h"
 #include "servers/visual_server.h"
-#include "translation.h"
 
 Size2 Button::get_minimum_size() const {
 
diff --git a/scene/gui/check_button.cpp b/scene/gui/check_button.cpp
index f9ed0ecdbb..fa9538da28 100644
--- a/scene/gui/check_button.cpp
+++ b/scene/gui/check_button.cpp
@@ -30,7 +30,7 @@
 
 #include "check_button.h"
 
-#include "print_string.h"
+#include "core/print_string.h"
 #include "servers/visual_server.h"
 
 Size2 CheckButton::get_icon_size() const {
diff --git a/scene/gui/color_picker.cpp b/scene/gui/color_picker.cpp
index 8e232c6f46..537a16fbc3 100644
--- a/scene/gui/color_picker.cpp
+++ b/scene/gui/color_picker.cpp
@@ -30,9 +30,9 @@
 
 #include "color_picker.h"
 
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "os/os.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
 #include "scene/gui/separator.h"
 #include "scene/main/viewport.h"
 
diff --git a/scene/gui/container.cpp b/scene/gui/container.cpp
index 7df03bf7c6..d606629041 100644
--- a/scene/gui/container.cpp
+++ b/scene/gui/container.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "container.h"
-#include "message_queue.h"
+#include "core/message_queue.h"
 #include "scene/scene_string_names.h"
 
 void Container::_child_minsize_changed() {
diff --git a/scene/gui/control.cpp b/scene/gui/control.cpp
index dc042b88d2..24697e370f 100644
--- a/scene/gui/control.cpp
+++ b/scene/gui/control.cpp
@@ -29,15 +29,15 @@
 /*************************************************************************/
 
 #include "control.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 #include "scene/main/canvas_layer.h"
 #include "scene/main/viewport.h"
 #include "servers/visual_server.h"
 
-#include "message_queue.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/message_queue.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 #include "scene/gui/label.h"
 #include "scene/gui/panel.h"
 #include "scene/scene_string_names.h"
diff --git a/scene/gui/control.h b/scene/gui/control.h
index c6bd2f097d..c38cd66245 100644
--- a/scene/gui/control.h
+++ b/scene/gui/control.h
@@ -31,13 +31,13 @@
 #ifndef CONTROL_H
 #define CONTROL_H
 
-#include "rid.h"
+#include "core/math/transform_2d.h"
+#include "core/rid.h"
 #include "scene/2d/canvas_item.h"
 #include "scene/gui/shortcut.h"
 #include "scene/main/node.h"
 #include "scene/main/timer.h"
 #include "scene/resources/theme.h"
-#include "transform_2d.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/scene/gui/dialogs.cpp b/scene/gui/dialogs.cpp
index d9737fa21a..e3a21eb10d 100644
--- a/scene/gui/dialogs.cpp
+++ b/scene/gui/dialogs.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "dialogs.h"
+#include "core/print_string.h"
+#include "core/translation.h"
 #include "line_edit.h"
-#include "print_string.h"
-#include "translation.h"
 
 #ifdef TOOLS_ENABLED
 #include "editor/editor_node.h"
diff --git a/scene/gui/file_dialog.cpp b/scene/gui/file_dialog.cpp
index 9bddaa7d29..5f162a3652 100644
--- a/scene/gui/file_dialog.cpp
+++ b/scene/gui/file_dialog.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "file_dialog.h"
-#include "os/keyboard.h"
-#include "print_string.h"
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
 #include "scene/gui/label.h"
 
 FileDialog::GetIconFunc FileDialog::get_icon_func = NULL;
diff --git a/scene/gui/file_dialog.h b/scene/gui/file_dialog.h
index 3227f1c3a8..8bd15080d3 100644
--- a/scene/gui/file_dialog.h
+++ b/scene/gui/file_dialog.h
@@ -32,7 +32,7 @@
 #define FILE_DIALOG_H
 
 #include "box_container.h"
-#include "os/dir_access.h"
+#include "core/os/dir_access.h"
 #include "scene/gui/dialogs.h"
 #include "scene/gui/line_edit.h"
 #include "scene/gui/option_button.h"
diff --git a/scene/gui/gradient_edit.cpp b/scene/gui/gradient_edit.cpp
index dc013f00a5..19ffe681ef 100644
--- a/scene/gui/gradient_edit.cpp
+++ b/scene/gui/gradient_edit.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "gradient_edit.h"
+#include "core/os/keyboard.h"
 #include "editor/editor_scale.h"
-#include "os/keyboard.h"
 
 #define SPACING (3 * EDSCALE)
 
diff --git a/scene/gui/graph_edit.cpp b/scene/gui/graph_edit.cpp
index 8797ab6fd3..9045197333 100644
--- a/scene/gui/graph_edit.cpp
+++ b/scene/gui/graph_edit.cpp
@@ -30,8 +30,8 @@
 
 #include "graph_edit.h"
 
-#include "os/input.h"
-#include "os/keyboard.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
 #include "scene/gui/box_container.h"
 
 #define ZOOM_SCALE 1.2
diff --git a/scene/gui/graph_node.cpp b/scene/gui/graph_node.cpp
index 24857d49fa..b189afd30b 100644
--- a/scene/gui/graph_node.cpp
+++ b/scene/gui/graph_node.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "graph_node.h"
-#include "method_bind_ext.gen.inc"
+
+#include "core/method_bind_ext.gen.inc"
 
 bool GraphNode::_set(const StringName &p_name, const Variant &p_value) {
 
diff --git a/scene/gui/item_list.cpp b/scene/gui/item_list.cpp
index 9f5c12e87f..0d5fbee9ee 100644
--- a/scene/gui/item_list.cpp
+++ b/scene/gui/item_list.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "item_list.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 void ItemList::add_item(const String &p_item, const Ref<Texture> &p_texture, bool p_selectable) {
 
diff --git a/scene/gui/label.cpp b/scene/gui/label.cpp
index 0b36e1663c..ce8de38b74 100644
--- a/scene/gui/label.cpp
+++ b/scene/gui/label.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 
 #include "label.h"
-#include "print_string.h"
-#include "project_settings.h"
-#include "translation.h"
+#include "core/print_string.h"
+#include "core/project_settings.h"
+#include "core/translation.h"
 
 void Label::set_autowrap(bool p_autowrap) {
 
diff --git a/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
index 1f3d5e6e13..9c43d5b308 100644
--- a/scene/gui/line_edit.cpp
+++ b/scene/gui/line_edit.cpp
@@ -29,12 +29,12 @@
 /*************************************************************************/
 
 #include "line_edit.h"
+#include "core/message_queue.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/translation.h"
 #include "label.h"
-#include "message_queue.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "translation.h"
 
 #ifdef TOOLS_ENABLED
 #include "editor/editor_scale.h"
diff --git a/scene/gui/menu_button.cpp b/scene/gui/menu_button.cpp
index 87cf4dc334..95ec618c3b 100644
--- a/scene/gui/menu_button.cpp
+++ b/scene/gui/menu_button.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "menu_button.h"
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 #include "scene/main/viewport.h"
 
 void MenuButton::_unhandled_key_input(Ref<InputEvent> p_event) {
diff --git a/scene/gui/option_button.cpp b/scene/gui/option_button.cpp
index 2901176a69..6b847c6483 100644
--- a/scene/gui/option_button.cpp
+++ b/scene/gui/option_button.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "option_button.h"
-#include "print_string.h"
+#include "core/print_string.h"
 
 Size2 OptionButton::get_minimum_size() const {
 
diff --git a/scene/gui/panel.cpp b/scene/gui/panel.cpp
index 4375e03a50..d3b7b72ee1 100644
--- a/scene/gui/panel.cpp
+++ b/scene/gui/panel.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "panel.h"
-#include "print_string.h"
+#include "core/print_string.h"
 
 void Panel::_notification(int p_what) {
 
diff --git a/scene/gui/popup.cpp b/scene/gui/popup.cpp
index 2add67ace1..bfbe62e1c7 100644
--- a/scene/gui/popup.cpp
+++ b/scene/gui/popup.cpp
@@ -30,8 +30,8 @@
 
 #include "popup.h"
 
-#include "engine.h"
-#include "os/keyboard.h"
+#include "core/engine.h"
+#include "core/os/keyboard.h"
 
 void Popup::_gui_input(Ref<InputEvent> p_event) {
 }
diff --git a/scene/gui/popup_menu.cpp b/scene/gui/popup_menu.cpp
index 436dda41a4..3239641c2f 100644
--- a/scene/gui/popup_menu.cpp
+++ b/scene/gui/popup_menu.cpp
@@ -29,10 +29,10 @@
 /*************************************************************************/
 
 #include "popup_menu.h"
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "print_string.h"
-#include "translation.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
+#include "core/print_string.h"
+#include "core/translation.h"
 
 String PopupMenu::_get_accel_text(int p_item) const {
 
diff --git a/scene/gui/reference_rect.cpp b/scene/gui/reference_rect.cpp
index 74e68598f4..e96e5afb2a 100644
--- a/scene/gui/reference_rect.cpp
+++ b/scene/gui/reference_rect.cpp
@@ -30,7 +30,7 @@
 
 #include "reference_rect.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void ReferenceRect::_notification(int p_what) {
 
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index a5f9bea1b1..b1c44aea3c 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "rich_text_label.h"
-#include "os/keyboard.h"
-#include "os/os.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
 #include "scene/scene_string_names.h"
 
 #ifdef TOOLS_ENABLED
diff --git a/scene/gui/scroll_bar.cpp b/scene/gui/scroll_bar.cpp
index e5bd1c453d..df27fb0e6b 100644
--- a/scene/gui/scroll_bar.cpp
+++ b/scene/gui/scroll_bar.cpp
@@ -30,9 +30,9 @@
 
 #include "scroll_bar.h"
 
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 bool ScrollBar::focus_by_default = false;
 
diff --git a/scene/gui/scroll_container.cpp b/scene/gui/scroll_container.cpp
index 495d618930..e3fb602065 100644
--- a/scene/gui/scroll_container.cpp
+++ b/scene/gui/scroll_container.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "scroll_container.h"
-#include "os/os.h"
+#include "core/os/os.h"
 bool ScrollContainer::clips_input() const {
 
 	return true;
diff --git a/scene/gui/shortcut.cpp b/scene/gui/shortcut.cpp
index 36490cf254..6fcf96f611 100644
--- a/scene/gui/shortcut.cpp
+++ b/scene/gui/shortcut.cpp
@@ -30,7 +30,7 @@
 
 #include "shortcut.h"
 
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 void ShortCut::set_shortcut(const Ref<InputEvent> &p_shortcut) {
 
diff --git a/scene/gui/shortcut.h b/scene/gui/shortcut.h
index f9240642bf..7613a24e43 100644
--- a/scene/gui/shortcut.h
+++ b/scene/gui/shortcut.h
@@ -31,8 +31,8 @@
 #ifndef SHORTCUT_H
 #define SHORTCUT_H
 
-#include "os/input_event.h"
-#include "resource.h"
+#include "core/os/input_event.h"
+#include "core/resource.h"
 
 class ShortCut : public Resource {
 
diff --git a/scene/gui/slider.cpp b/scene/gui/slider.cpp
index b820e2eafd..147c0518ec 100644
--- a/scene/gui/slider.cpp
+++ b/scene/gui/slider.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "slider.h"
-#include "os/keyboard.h"
+#include "core/os/keyboard.h"
 
 Size2 Slider::get_minimum_size() const {
 
diff --git a/scene/gui/spin_box.cpp b/scene/gui/spin_box.cpp
index 145981d498..2221923093 100644
--- a/scene/gui/spin_box.cpp
+++ b/scene/gui/spin_box.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "spin_box.h"
-#include "os/input.h"
+#include "core/os/input.h"
 
 Size2 SpinBox::get_minimum_size() const {
 
diff --git a/scene/gui/tab_container.cpp b/scene/gui/tab_container.cpp
index c30fa96327..4c354768fe 100644
--- a/scene/gui/tab_container.cpp
+++ b/scene/gui/tab_container.cpp
@@ -30,7 +30,7 @@
 
 #include "tab_container.h"
 
-#include "message_queue.h"
+#include "core/message_queue.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/label.h"
 #include "scene/gui/texture_rect.h"
diff --git a/scene/gui/tabs.cpp b/scene/gui/tabs.cpp
index 2075f7ce70..c56b7d0f26 100644
--- a/scene/gui/tabs.cpp
+++ b/scene/gui/tabs.cpp
@@ -30,7 +30,7 @@
 
 #include "tabs.h"
 
-#include "message_queue.h"
+#include "core/message_queue.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/label.h"
 #include "scene/gui/texture_rect.h"
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 8f1971c1ee..60d5c45846 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -30,11 +30,11 @@
 
 #include "text_edit.h"
 
-#include "message_queue.h"
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/message_queue.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/main/viewport.h"
 
 #ifdef TOOLS_ENABLED
diff --git a/scene/gui/texture_progress.cpp b/scene/gui/texture_progress.cpp
index ff90576c1b..bb0e18c32a 100644
--- a/scene/gui/texture_progress.cpp
+++ b/scene/gui/texture_progress.cpp
@@ -30,7 +30,7 @@
 
 #include "texture_progress.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void TextureProgress::set_under_texture(const Ref<Texture> &p_texture) {
 
diff --git a/scene/gui/tree.cpp b/scene/gui/tree.cpp
index eaf7ad7670..be1870068d 100644
--- a/scene/gui/tree.cpp
+++ b/scene/gui/tree.cpp
@@ -31,12 +31,12 @@
 #include "tree.h"
 #include <limits.h>
 
-#include "math_funcs.h"
-#include "os/input.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "project_settings.h"
+#include "core/math/math_funcs.h"
+#include "core/os/input.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/project_settings.h"
 #include "scene/main/viewport.h"
 
 #ifdef TOOLS_ENABLED
diff --git a/scene/gui/video_player.cpp b/scene/gui/video_player.cpp
index 88e1847533..17ab234551 100644
--- a/scene/gui/video_player.cpp
+++ b/scene/gui/video_player.cpp
@@ -31,7 +31,7 @@
 #include "video_player.h"
 #include "scene/scene_string_names.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "servers/audio_server.h"
 
 int VideoPlayer::sp_get_channel_count() const {
diff --git a/scene/main/http_request.h b/scene/main/http_request.h
index eb5d020bc5..de09d2afda 100644
--- a/scene/main/http_request.h
+++ b/scene/main/http_request.h
@@ -31,10 +31,10 @@
 #ifndef HTTPREQUEST_H
 #define HTTPREQUEST_H
 
-#include "io/http_client.h"
+#include "core/io/http_client.h"
+#include "core/os/file_access.h"
+#include "core/os/thread.h"
 #include "node.h"
-#include "os/file_access.h"
-#include "os/thread.h"
 
 class HTTPRequest : public Node {
 
diff --git a/scene/main/instance_placeholder.cpp b/scene/main/instance_placeholder.cpp
index 1443d5efbf..0ee5648de2 100644
--- a/scene/main/instance_placeholder.cpp
+++ b/scene/main/instance_placeholder.cpp
@@ -30,7 +30,7 @@
 
 #include "instance_placeholder.h"
 
-#include "io/resource_loader.h"
+#include "core/io/resource_loader.h"
 #include "scene/resources/packed_scene.h"
 
 bool InstancePlaceholder::_set(const StringName &p_name, const Variant &p_value) {
diff --git a/scene/main/node.cpp b/scene/main/node.cpp
index 3d1614199a..d4456738ae 100644
--- a/scene/main/node.cpp
+++ b/scene/main/node.cpp
@@ -31,10 +31,10 @@
 #include "node.h"
 
 #include "core/core_string_names.h"
+#include "core/io/resource_loader.h"
+#include "core/message_queue.h"
+#include "core/print_string.h"
 #include "instance_placeholder.h"
-#include "io/resource_loader.h"
-#include "message_queue.h"
-#include "print_string.h"
 #include "scene/resources/packed_scene.h"
 #include "scene/scene_string_names.h"
 #include "viewport.h"
diff --git a/scene/main/node.h b/scene/main/node.h
index fb84981feb..8d6c558e93 100644
--- a/scene/main/node.h
+++ b/scene/main/node.h
@@ -31,13 +31,13 @@
 #ifndef NODE_H
 #define NODE_H
 
-#include "class_db.h"
-#include "map.h"
-#include "node_path.h"
-#include "object.h"
-#include "project_settings.h"
+#include "core/class_db.h"
+#include "core/map.h"
+#include "core/node_path.h"
+#include "core/object.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
 #include "scene/main/scene_tree.h"
-#include "script_language.h"
 
 class Viewport;
 class SceneState;
diff --git a/scene/main/scene_tree.cpp b/scene/main/scene_tree.cpp
index 0b763d2433..16be6dad7d 100644
--- a/scene/main/scene_tree.cpp
+++ b/scene/main/scene_tree.cpp
@@ -30,16 +30,16 @@
 
 #include "scene_tree.h"
 
+#include "core/io/marshalls.h"
+#include "core/io/resource_loader.h"
+#include "core/message_queue.h"
+#include "core/os/keyboard.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
+#include "core/project_settings.h"
 #include "editor/editor_node.h"
-#include "io/marshalls.h"
-#include "io/resource_loader.h"
 #include "main/input_default.h"
-#include "message_queue.h"
 #include "node.h"
-#include "os/keyboard.h"
-#include "os/os.h"
-#include "print_string.h"
-#include "project_settings.h"
 #include "scene/resources/dynamic_font.h"
 #include "scene/resources/material.h"
 #include "scene/resources/mesh.h"
diff --git a/scene/main/scene_tree.h b/scene/main/scene_tree.h
index 11201097d4..d59cbe05fb 100644
--- a/scene/main/scene_tree.h
+++ b/scene/main/scene_tree.h
@@ -31,13 +31,13 @@
 #ifndef SCENE_MAIN_LOOP_H
 #define SCENE_MAIN_LOOP_H
 
-#include "io/multiplayer_api.h"
-#include "os/main_loop.h"
-#include "os/thread_safe.h"
+#include "core/io/multiplayer_api.h"
+#include "core/os/main_loop.h"
+#include "core/os/thread_safe.h"
+#include "core/self_list.h"
 #include "scene/resources/mesh.h"
 #include "scene/resources/world.h"
 #include "scene/resources/world_2d.h"
-#include "self_list.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/scene/main/timer.cpp b/scene/main/timer.cpp
index c285694dfa..227840531e 100755
--- a/scene/main/timer.cpp
+++ b/scene/main/timer.cpp
@@ -30,7 +30,7 @@
 
 #include "timer.h"
 
-#include "engine.h"
+#include "core/engine.h"
 
 void Timer::_notification(int p_what) {
 
diff --git a/scene/main/viewport.cpp b/scene/main/viewport.cpp
index d1b3eb9d9a..dfd9dfa52e 100644
--- a/scene/main/viewport.cpp
+++ b/scene/main/viewport.cpp
@@ -30,9 +30,9 @@
 
 #include "viewport.h"
 
-#include "os/input.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/input.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/2d/collision_object_2d.h"
 #include "scene/3d/camera.h"
 #include "scene/3d/collision_object.h"
diff --git a/scene/main/viewport.h b/scene/main/viewport.h
index 450f235b79..c1a4c0e3eb 100644
--- a/scene/main/viewport.h
+++ b/scene/main/viewport.h
@@ -31,11 +31,11 @@
 #ifndef VIEWPORT_H
 #define VIEWPORT_H
 
+#include "core/math/transform_2d.h"
 #include "scene/main/node.h"
 #include "scene/resources/texture.h"
 #include "scene/resources/world_2d.h"
 #include "servers/visual_server.h"
-#include "transform_2d.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/scene/resources/animation.cpp b/scene/resources/animation.cpp
index 58e6db3f5e..694e959bcb 100644
--- a/scene/resources/animation.cpp
+++ b/scene/resources/animation.cpp
@@ -30,7 +30,7 @@
 
 #include "animation.h"
 
-#include "geometry.h"
+#include "core/math/geometry.h"
 
 #define ANIM_MIN_LENGTH 0.001
 
diff --git a/scene/resources/animation.h b/scene/resources/animation.h
index a41e6ea5d7..6eec2c8bc7 100644
--- a/scene/resources/animation.h
+++ b/scene/resources/animation.h
@@ -31,7 +31,7 @@
 #ifndef ANIMATION_H
 #define ANIMATION_H
 
-#include "resource.h"
+#include "core/resource.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/scene/resources/audio_stream_sample.cpp b/scene/resources/audio_stream_sample.cpp
index e6a4b01deb..57d0deeb78 100644
--- a/scene/resources/audio_stream_sample.cpp
+++ b/scene/resources/audio_stream_sample.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "audio_stream_sample.h"
-#include "io/marshalls.h"
-#include "os/file_access.h"
+#include "core/io/marshalls.h"
+#include "core/os/file_access.h"
 
 void AudioStreamPlaybackSample::start(float p_from_pos) {
 
diff --git a/scene/resources/bit_mask.cpp b/scene/resources/bit_mask.cpp
index 5694099754..d670161afd 100644
--- a/scene/resources/bit_mask.cpp
+++ b/scene/resources/bit_mask.cpp
@@ -30,7 +30,7 @@
 
 #include "bit_mask.h"
 
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 void BitMap::create(const Size2 &p_size) {
 
diff --git a/scene/resources/bit_mask.h b/scene/resources/bit_mask.h
index 40f0bfb04a..04191a7774 100644
--- a/scene/resources/bit_mask.h
+++ b/scene/resources/bit_mask.h
@@ -31,9 +31,9 @@
 #ifndef BIT_MASK_H
 #define BIT_MASK_H
 
-#include "image.h"
-#include "io/resource_loader.h"
-#include "resource.h"
+#include "core/image.h"
+#include "core/io/resource_loader.h"
+#include "core/resource.h"
 
 class BitMap : public Resource {
 
diff --git a/scene/resources/bounds.h b/scene/resources/bounds.h
index dfe2fe40c6..c86e15ae40 100644
--- a/scene/resources/bounds.h
+++ b/scene/resources/bounds.h
@@ -31,8 +31,8 @@
 #ifndef BOUNDS_H
 #define BOUNDS_H
 
-#include "bsp_tree.h"
-#include "resource.h"
+#include "core/math/bsp_tree.h"
+#include "core/resource.h"
 
 class Bounds : public Resource {
 
diff --git a/scene/resources/canvas.h b/scene/resources/canvas.h
index dfdea82ca5..cd37ea3583 100644
--- a/scene/resources/canvas.h
+++ b/scene/resources/canvas.h
@@ -31,7 +31,7 @@
 #ifndef CANVAS_H
 #define CANVAS_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 class Canvas : public Resource {
 
diff --git a/scene/resources/color_ramp.cpp b/scene/resources/color_ramp.cpp
index 4a43303d84..d5e8c17cbc 100644
--- a/scene/resources/color_ramp.cpp
+++ b/scene/resources/color_ramp.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "color_ramp.h"
-#include "core_string_names.h"
+#include "core/core_string_names.h"
 
 //setter and getter names for property serialization
 #define COLOR_RAMP_GET_OFFSETS "get_offsets"
diff --git a/scene/resources/color_ramp.h b/scene/resources/color_ramp.h
index 070ad7f0d3..88fa4beb7f 100644
--- a/scene/resources/color_ramp.h
+++ b/scene/resources/color_ramp.h
@@ -31,7 +31,7 @@
 #ifndef SCENE_RESOURCES_COLOR_RAMP_H_
 #define SCENE_RESOURCES_COLOR_RAMP_H_
 
-#include "resource.h"
+#include "core/resource.h"
 
 class Gradient : public Resource {
 	GDCLASS(Gradient, Resource);
diff --git a/scene/resources/convex_polygon_shape.cpp b/scene/resources/convex_polygon_shape.cpp
index fa9369d3bc..9d47bca5ed 100644
--- a/scene/resources/convex_polygon_shape.cpp
+++ b/scene/resources/convex_polygon_shape.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "convex_polygon_shape.h"
-#include "quick_hull.h"
+#include "core/math/quick_hull.h"
 #include "servers/physics_server.h"
 
 Vector<Vector3> ConvexPolygonShape::_gen_debug_mesh_lines() {
diff --git a/scene/resources/convex_polygon_shape_2d.cpp b/scene/resources/convex_polygon_shape_2d.cpp
index d061c4ea1e..f325af7ea4 100644
--- a/scene/resources/convex_polygon_shape_2d.cpp
+++ b/scene/resources/convex_polygon_shape_2d.cpp
@@ -30,7 +30,7 @@
 
 #include "convex_polygon_shape_2d.h"
 
-#include "geometry.h"
+#include "core/math/geometry.h"
 #include "servers/physics_2d_server.h"
 #include "servers/visual_server.h"
 
diff --git a/scene/resources/curve.cpp b/scene/resources/curve.cpp
index 66af816a28..9188d890f7 100644
--- a/scene/resources/curve.cpp
+++ b/scene/resources/curve.cpp
@@ -30,7 +30,7 @@
 
 #include "curve.h"
 
-#include "core_string_names.h"
+#include "core/core_string_names.h"
 
 template <class T>
 static _FORCE_INLINE_ T _bezier_interp(real_t t, T start, T control_1, T control_2, T end) {
diff --git a/scene/resources/curve.h b/scene/resources/curve.h
index 058c4f1bc2..234e3a6779 100644
--- a/scene/resources/curve.h
+++ b/scene/resources/curve.h
@@ -31,7 +31,7 @@
 #ifndef CURVE_H
 #define CURVE_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 // y(x) curve
 class Curve : public Resource {
diff --git a/scene/resources/default_theme/default_theme.cpp b/scene/resources/default_theme/default_theme.cpp
index 0eee2ae393..20fa1d6e2b 100644
--- a/scene/resources/default_theme/default_theme.cpp
+++ b/scene/resources/default_theme/default_theme.cpp
@@ -32,7 +32,7 @@
 
 #include "scene/resources/theme.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "theme_data.h"
 
 #include "font_hidpi.inc"
diff --git a/scene/resources/dynamic_font.cpp b/scene/resources/dynamic_font.cpp
index 4df849df6a..0785d3bfc6 100644
--- a/scene/resources/dynamic_font.cpp
+++ b/scene/resources/dynamic_font.cpp
@@ -30,8 +30,8 @@
 
 #ifdef FREETYPE_ENABLED
 #include "dynamic_font.h"
-#include "os/file_access.h"
-#include "os/os.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 
 #include FT_STROKER_H
 
diff --git a/scene/resources/dynamic_font.h b/scene/resources/dynamic_font.h
index f460bca2d4..afda48a566 100644
--- a/scene/resources/dynamic_font.h
+++ b/scene/resources/dynamic_font.h
@@ -32,10 +32,10 @@
 #define DYNAMIC_FONT_H
 
 #ifdef FREETYPE_ENABLED
-#include "io/resource_loader.h"
-#include "os/mutex.h"
-#include "os/thread_safe.h"
-#include "pair.h"
+#include "core/io/resource_loader.h"
+#include "core/os/mutex.h"
+#include "core/os/thread_safe.h"
+#include "core/pair.h"
 #include "scene/resources/font.h"
 
 #include <ft2build.h>
diff --git a/scene/resources/dynamic_font_stb.cpp b/scene/resources/dynamic_font_stb.cpp
index be394e19c4..8cb2cc4983 100644
--- a/scene/resources/dynamic_font_stb.cpp
+++ b/scene/resources/dynamic_font_stb.cpp
@@ -33,7 +33,7 @@
 #ifndef FREETYPE_ENABLED
 
 #define STB_TRUETYPE_IMPLEMENTATION
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 void DynamicFontData::lock() {
 
diff --git a/scene/resources/dynamic_font_stb.h b/scene/resources/dynamic_font_stb.h
index feae29c0c2..e1ef72ea4f 100644
--- a/scene/resources/dynamic_font_stb.h
+++ b/scene/resources/dynamic_font_stb.h
@@ -33,8 +33,8 @@
 
 #ifndef FREETYPE_ENABLED
 
+#include "core/io/resource_loader.h"
 #include "font.h"
-#include "io/resource_loader.h"
 
 #include "thirdparty/misc/stb_truetype.h"
 
diff --git a/scene/resources/environment.cpp b/scene/resources/environment.cpp
index d3da842b79..f4d5b8376b 100644
--- a/scene/resources/environment.cpp
+++ b/scene/resources/environment.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "environment.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 #include "servers/visual_server.h"
 #include "texture.h"
 
diff --git a/scene/resources/environment.h b/scene/resources/environment.h
index 7d66c7e60b..aab37719e0 100644
--- a/scene/resources/environment.h
+++ b/scene/resources/environment.h
@@ -31,7 +31,7 @@
 #ifndef ENVIRONMENT_H
 #define ENVIRONMENT_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "scene/resources/sky_box.h"
 #include "scene/resources/texture.h"
 #include "servers/visual_server.h"
diff --git a/scene/resources/font.cpp b/scene/resources/font.cpp
index 3dfde01320..50bf8f38f7 100644
--- a/scene/resources/font.cpp
+++ b/scene/resources/font.cpp
@@ -31,8 +31,8 @@
 #include "font.h"
 
 #include "core/io/resource_loader.h"
+#include "core/method_bind_ext.gen.inc"
 #include "core/os/file_access.h"
-#include "method_bind_ext.gen.inc"
 
 void Font::draw_halign(RID p_canvas_item, const Point2 &p_pos, HAlign p_align, float p_width, const String &p_text, const Color &p_modulate, const Color &p_outline_modulate) const {
 	float length = get_string_size(p_text).width;
diff --git a/scene/resources/font.h b/scene/resources/font.h
index 4e295b6035..39e66a822d 100644
--- a/scene/resources/font.h
+++ b/scene/resources/font.h
@@ -31,8 +31,8 @@
 #ifndef FONT_H
 #define FONT_H
 
-#include "map.h"
-#include "resource.h"
+#include "core/map.h"
+#include "core/resource.h"
 #include "scene/resources/texture.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/scene/resources/material.h b/scene/resources/material.h
index f43d240a53..078649e7b0 100644
--- a/scene/resources/material.h
+++ b/scene/resources/material.h
@@ -31,10 +31,10 @@
 #ifndef MATERIAL_H
 #define MATERIAL_H
 
-#include "resource.h"
+#include "core/resource.h"
+#include "core/self_list.h"
 #include "scene/resources/shader.h"
 #include "scene/resources/texture.h"
-#include "self_list.h"
 #include "servers/visual/shader_language.h"
 #include "servers/visual_server.h"
 /**
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index e16dad1a38..6426689397 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -30,7 +30,7 @@
 
 #include "mesh.h"
 
-#include "pair.h"
+#include "core/pair.h"
 #include "scene/resources/concave_polygon_shape.h"
 #include "scene/resources/convex_polygon_shape.h"
 #include "surface_tool.h"
diff --git a/scene/resources/mesh.h b/scene/resources/mesh.h
index 5ab28e9785..aebba09ef8 100644
--- a/scene/resources/mesh.h
+++ b/scene/resources/mesh.h
@@ -31,11 +31,11 @@
 #ifndef MESH_H
 #define MESH_H
 
-#include "resource.h"
+#include "core/math/triangle_mesh.h"
+#include "core/resource.h"
 #include "scene/resources/material.h"
 #include "scene/resources/shape.h"
 #include "servers/visual_server.h"
-#include "triangle_mesh.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/scene/resources/mesh_library.h b/scene/resources/mesh_library.h
index 69719960e2..3ce0cf9b66 100644
--- a/scene/resources/mesh_library.h
+++ b/scene/resources/mesh_library.h
@@ -31,9 +31,9 @@
 #ifndef GRID_THEME_H
 #define GRID_THEME_H
 
-#include "map.h"
+#include "core/map.h"
+#include "core/resource.h"
 #include "mesh.h"
-#include "resource.h"
 #include "scene/3d/navigation_mesh.h"
 #include "shape.h"
 
diff --git a/scene/resources/packed_scene.cpp b/scene/resources/packed_scene.cpp
index f034e07ff9..086fb83af9 100644
--- a/scene/resources/packed_scene.cpp
+++ b/scene/resources/packed_scene.cpp
@@ -31,9 +31,9 @@
 #include "packed_scene.h"
 
 #include "core/core_string_names.h"
-#include "engine.h"
-#include "io/resource_loader.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/io/resource_loader.h"
+#include "core/project_settings.h"
 #include "scene/2d/node_2d.h"
 #include "scene/3d/spatial.h"
 #include "scene/gui/control.h"
diff --git a/scene/resources/packed_scene.h b/scene/resources/packed_scene.h
index 278986eb62..e5f22f5e3b 100644
--- a/scene/resources/packed_scene.h
+++ b/scene/resources/packed_scene.h
@@ -31,7 +31,7 @@
 #ifndef PACKED_SCENE_H
 #define PACKED_SCENE_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "scene/main/node.h"
 
 class SceneState : public Reference {
diff --git a/scene/resources/particles_material.h b/scene/resources/particles_material.h
index 8090926fa3..91fdcc0346 100644
--- a/scene/resources/particles_material.h
+++ b/scene/resources/particles_material.h
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "rid.h"
+#include "core/rid.h"
 #include "scene/resources/material.h"
 
 #ifndef PARTICLES_MATERIAL_H
diff --git a/scene/resources/physics_material.h b/scene/resources/physics_material.h
index c882e2081a..bf11bf0ac1 100644
--- a/scene/resources/physics_material.h
+++ b/scene/resources/physics_material.h
@@ -31,7 +31,7 @@
 #ifndef physics_material_override_H
 #define physics_material_override_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "servers/physics_server.h"
 
 class PhysicsMaterial : public Resource {
diff --git a/scene/resources/polygon_path_finder.cpp b/scene/resources/polygon_path_finder.cpp
index 44f9ebaf33..bd03930c9e 100644
--- a/scene/resources/polygon_path_finder.cpp
+++ b/scene/resources/polygon_path_finder.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "polygon_path_finder.h"
-#include "geometry.h"
+#include "core/math/geometry.h"
 
 bool PolygonPathFinder::_is_point_inside(const Vector2 &p_point) const {
 
diff --git a/scene/resources/polygon_path_finder.h b/scene/resources/polygon_path_finder.h
index 19761c274c..66282458af 100644
--- a/scene/resources/polygon_path_finder.h
+++ b/scene/resources/polygon_path_finder.h
@@ -31,7 +31,7 @@
 #ifndef POLYGON_PATH_FINDER_H
 #define POLYGON_PATH_FINDER_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 class PolygonPathFinder : public Resource {
 
diff --git a/scene/resources/room.h b/scene/resources/room.h
index 359d918665..d5ad847516 100644
--- a/scene/resources/room.h
+++ b/scene/resources/room.h
@@ -31,8 +31,8 @@
 #ifndef ROOM_BOUNDS_H
 #define ROOM_BOUNDS_H
 
-#include "bsp_tree.h"
-#include "resource.h"
+#include "core/math/bsp_tree.h"
+#include "core/resource.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
diff --git a/scene/resources/scene_format_text.cpp b/scene/resources/scene_format_text.cpp
index fd9989fe72..02d2cf31f3 100644
--- a/scene/resources/scene_format_text.cpp
+++ b/scene/resources/scene_format_text.cpp
@@ -30,15 +30,15 @@
 
 #include "scene_format_text.h"
 #include "core/io/resource_format_binary.h"
-#include "os/dir_access.h"
-#include "project_settings.h"
-#include "version.h"
+#include "core/os/dir_access.h"
+#include "core/project_settings.h"
+#include "core/version.h"
 
 //version 2: changed names for basis, aabb, poolvectors, etc.
 #define FORMAT_VERSION 2
 
-#include "os/dir_access.h"
-#include "version.h"
+#include "core/os/dir_access.h"
+#include "core/version.h"
 
 #define _printerr() ERR_PRINT(String(res_path + ":" + itos(lines) + " - Parse Error: " + error_text).utf8().get_data());
 
diff --git a/scene/resources/scene_format_text.h b/scene/resources/scene_format_text.h
index c28ded3d77..8d1af2bbb2 100644
--- a/scene/resources/scene_format_text.h
+++ b/scene/resources/scene_format_text.h
@@ -31,11 +31,11 @@
 #ifndef SCENE_FORMAT_TEXT_H
 #define SCENE_FORMAT_TEXT_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "os/file_access.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/os/file_access.h"
+#include "core/variant_parser.h"
 #include "scene/resources/packed_scene.h"
-#include "variant_parser.h"
 
 class ResourceInteractiveLoaderText : public ResourceInteractiveLoader {
 
diff --git a/scene/resources/shader.cpp b/scene/resources/shader.cpp
index f53f03c1c8..1bfc41bd92 100644
--- a/scene/resources/shader.cpp
+++ b/scene/resources/shader.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "shader.h"
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 #include "scene/scene_string_names.h"
 #include "servers/visual/shader_language.h"
 #include "servers/visual_server.h"
diff --git a/scene/resources/shader.h b/scene/resources/shader.h
index efc5da7753..6c91205c0c 100644
--- a/scene/resources/shader.h
+++ b/scene/resources/shader.h
@@ -31,9 +31,9 @@
 #ifndef SHADER_H
 #define SHADER_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
-#include "resource.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/resource.h"
 #include "scene/resources/texture.h"
 
 class Shader : public Resource {
diff --git a/scene/resources/shape.cpp b/scene/resources/shape.cpp
index a48ce0564b..8ccca81acd 100644
--- a/scene/resources/shape.cpp
+++ b/scene/resources/shape.cpp
@@ -30,7 +30,7 @@
 
 #include "shape.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "scene/main/scene_tree.h"
 #include "scene/resources/mesh.h"
 #include "servers/physics_server.h"
diff --git a/scene/resources/shape.h b/scene/resources/shape.h
index 0c44b86e92..6643f4ee44 100644
--- a/scene/resources/shape.h
+++ b/scene/resources/shape.h
@@ -31,7 +31,7 @@
 #ifndef SHAPE_H
 #define SHAPE_H
 
-#include "resource.h"
+#include "core/resource.h"
 class ArrayMesh;
 
 class Shape : public Resource {
diff --git a/scene/resources/shape_2d.h b/scene/resources/shape_2d.h
index 7eb0406bd8..fa39daa565 100644
--- a/scene/resources/shape_2d.h
+++ b/scene/resources/shape_2d.h
@@ -31,7 +31,7 @@
 #ifndef SHAPE_2D_H
 #define SHAPE_2D_H
 
-#include "resource.h"
+#include "core/resource.h"
 
 class Shape2D : public Resource {
 	GDCLASS(Shape2D, Resource);
diff --git a/scene/resources/sky_box.cpp b/scene/resources/sky_box.cpp
index 4176aed4d8..a6a52c7bba 100644
--- a/scene/resources/sky_box.cpp
+++ b/scene/resources/sky_box.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "sky_box.h"
-#include "io/image_loader.h"
+#include "core/io/image_loader.h"
 
 void Sky::set_radiance_size(RadianceSize p_size) {
 	ERR_FAIL_INDEX(p_size, RADIANCE_SIZE_MAX);
diff --git a/scene/resources/sky_box.h b/scene/resources/sky_box.h
index e561653a9e..bbb852822d 100644
--- a/scene/resources/sky_box.h
+++ b/scene/resources/sky_box.h
@@ -31,7 +31,7 @@
 #ifndef SKY_BOX_H
 #define SKY_BOX_H
 
-#include "os/thread.h"
+#include "core/os/thread.h"
 #include "scene/resources/texture.h"
 class Sky : public Resource {
 	GDCLASS(Sky, Resource);
diff --git a/scene/resources/space_2d.h b/scene/resources/space_2d.h
index 148285ac6d..1143ad2bd5 100644
--- a/scene/resources/space_2d.h
+++ b/scene/resources/space_2d.h
@@ -31,7 +31,7 @@
 #ifndef SPACE_2D_H
 #define SPACE_2D_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "servers/physics_2d_server.h"
 
 class Space2D : public Resource {
diff --git a/scene/resources/style_box.h b/scene/resources/style_box.h
index ed193a1ab4..df3ebe1c36 100644
--- a/scene/resources/style_box.h
+++ b/scene/resources/style_box.h
@@ -31,7 +31,7 @@
 #ifndef STYLE_BOX_H
 #define STYLE_BOX_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "scene/resources/texture.h"
 #include "servers/visual_server.h"
 /**
diff --git a/scene/resources/surface_tool.cpp b/scene/resources/surface_tool.cpp
index 81fabf40fe..5d4c7861e3 100644
--- a/scene/resources/surface_tool.cpp
+++ b/scene/resources/surface_tool.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "surface_tool.h"
-#include "method_bind_ext.gen.inc"
+
+#include "core/method_bind_ext.gen.inc"
 
 #define _VERTEX_SNAP 0.0001
 #define EQ_VERTEX_DIST 0.00001
diff --git a/scene/resources/text_file.cpp b/scene/resources/text_file.cpp
index e2fe0adfc5..2af24ad2d5 100644
--- a/scene/resources/text_file.cpp
+++ b/scene/resources/text_file.cpp
@@ -30,7 +30,7 @@
 
 #include "text_file.h"
 
-#include "os/file_access.h"
+#include "core/os/file_access.h"
 
 bool TextFile::has_text() const {
 	return text != "";
diff --git a/scene/resources/text_file.h b/scene/resources/text_file.h
index 40b648eebb..3abc769dc6 100644
--- a/scene/resources/text_file.h
+++ b/scene/resources/text_file.h
@@ -31,8 +31,8 @@
 #ifndef TEXTFILE_H
 #define TEXTFILE_H
 
-#include "io/resource_loader.h"
-#include "io/resource_saver.h"
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
 
 class TextFile : public Resource {
 
diff --git a/scene/resources/texture.cpp b/scene/resources/texture.cpp
index dba3e4d71b..9875c7b130 100644
--- a/scene/resources/texture.cpp
+++ b/scene/resources/texture.cpp
@@ -29,11 +29,12 @@
 /*************************************************************************/
 
 #include "texture.h"
+
 #include "bit_mask.h"
+#include "core/core_string_names.h"
+#include "core/io/image_loader.h"
 #include "core/method_bind_ext.gen.inc"
 #include "core/os/os.h"
-#include "core_string_names.h"
-#include "io/image_loader.h"
 
 Size2 Texture::get_size() const {
 
diff --git a/scene/resources/texture.h b/scene/resources/texture.h
index 79e6d2cdf9..4865f7b507 100644
--- a/scene/resources/texture.h
+++ b/scene/resources/texture.h
@@ -31,13 +31,13 @@
 #ifndef TEXTURE_H
 #define TEXTURE_H
 
+#include "core/io/resource_loader.h"
+#include "core/math/rect2.h"
+#include "core/os/mutex.h"
+#include "core/os/rw_lock.h"
+#include "core/os/thread_safe.h"
+#include "core/resource.h"
 #include "curve.h"
-#include "io/resource_loader.h"
-#include "os/mutex.h"
-#include "os/rw_lock.h"
-#include "os/thread_safe.h"
-#include "rect2.h"
-#include "resource.h"
 #include "scene/resources/color_ramp.h"
 #include "servers/visual_server.h"
 /**
diff --git a/scene/resources/theme.cpp b/scene/resources/theme.cpp
index f903669fc7..b102d477f2 100644
--- a/scene/resources/theme.cpp
+++ b/scene/resources/theme.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "theme.h"
-#include "os/file_access.h"
-#include "print_string.h"
+#include "core/os/file_access.h"
+#include "core/print_string.h"
 
 Ref<Theme> Theme::default_theme;
 
diff --git a/scene/resources/theme.h b/scene/resources/theme.h
index e0d4038e7e..0b76e95f18 100644
--- a/scene/resources/theme.h
+++ b/scene/resources/theme.h
@@ -31,8 +31,8 @@
 #ifndef THEME_H
 #define THEME_H
 
-#include "io/resource_loader.h"
-#include "resource.h"
+#include "core/io/resource_loader.h"
+#include "core/resource.h"
 #include "scene/resources/font.h"
 #include "scene/resources/shader.h"
 #include "scene/resources/style_box.h"
diff --git a/scene/resources/tile_set.cpp b/scene/resources/tile_set.cpp
index 23074b4bae..f852ecd7eb 100644
--- a/scene/resources/tile_set.cpp
+++ b/scene/resources/tile_set.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "tile_set.h"
-#include "array.h"
+#include "core/array.h"
 
 bool TileSet::_set(const StringName &p_name, const Variant &p_value) {
 
diff --git a/scene/resources/tile_set.h b/scene/resources/tile_set.h
index 40eee2700d..74dcd47c48 100644
--- a/scene/resources/tile_set.h
+++ b/scene/resources/tile_set.h
@@ -32,7 +32,7 @@
 #define TILE_SET_H
 
 #include "core/array.h"
-#include "resource.h"
+#include "core/resource.h"
 #include "scene/2d/light_occluder_2d.h"
 #include "scene/2d/navigation_polygon.h"
 #include "scene/resources/shape_2d.h"
diff --git a/scene/resources/visual_shader.cpp b/scene/resources/visual_shader.cpp
index 46b936b731..6bfb6ec5bf 100644
--- a/scene/resources/visual_shader.cpp
+++ b/scene/resources/visual_shader.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "visual_shader.h"
+#include "core/vmap.h"
 #include "servers/visual/shader_types.h"
-#include "vmap.h"
 
 void VisualShaderNode::set_output_port_for_preview(int p_index) {
 
diff --git a/scene/resources/visual_shader.h b/scene/resources/visual_shader.h
index 81dd37de3c..70d2425304 100644
--- a/scene/resources/visual_shader.h
+++ b/scene/resources/visual_shader.h
@@ -31,8 +31,8 @@
 #ifndef VISUAL_SHADER_H
 #define VISUAL_SHADER_H
 
+#include "core/string_builder.h"
 #include "scene/resources/shader.h"
-#include "string_builder.h"
 
 class VisualShaderNodeUniform;
 class VisualShaderNode;
diff --git a/scene/resources/world.cpp b/scene/resources/world.cpp
index 82183d24e7..b4588cd87c 100644
--- a/scene/resources/world.cpp
+++ b/scene/resources/world.cpp
@@ -30,8 +30,8 @@
 
 #include "world.h"
 
-#include "camera_matrix.h"
-#include "octree.h"
+#include "core/math/camera_matrix.h"
+#include "core/math/octree.h"
 #include "scene/3d/camera.h"
 #include "scene/3d/visibility_notifier.h"
 #include "scene/scene_string_names.h"
diff --git a/scene/resources/world.h b/scene/resources/world.h
index 54bdf25784..4c517323f3 100644
--- a/scene/resources/world.h
+++ b/scene/resources/world.h
@@ -31,7 +31,7 @@
 #ifndef WORLD_H
 #define WORLD_H
 
-#include "resource.h"
+#include "core/resource.h"
 #include "scene/resources/environment.h"
 #include "servers/physics_server.h"
 #include "servers/visual_server.h"
diff --git a/scene/resources/world_2d.cpp b/scene/resources/world_2d.cpp
index bed6ffd1bd..b390e74073 100644
--- a/scene/resources/world_2d.cpp
+++ b/scene/resources/world_2d.cpp
@@ -32,7 +32,7 @@
 #include "servers/physics_2d_server.h"
 #include "servers/visual_server.h"
 //#include "servers/spatial_sound_2d_server.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 #include "scene/2d/camera_2d.h"
 #include "scene/2d/visibility_notifier_2d.h"
 #include "scene/main/viewport.h"
diff --git a/scene/resources/world_2d.h b/scene/resources/world_2d.h
index 59f34e32f2..856e9dbf01 100644
--- a/scene/resources/world_2d.h
+++ b/scene/resources/world_2d.h
@@ -31,8 +31,8 @@
 #ifndef WORLD_2D_H
 #define WORLD_2D_H
 
-#include "project_settings.h"
-#include "resource.h"
+#include "core/project_settings.h"
+#include "core/resource.h"
 #include "servers/physics_2d_server.h"
 
 class SpatialIndexer2D;
diff --git a/scene/scene_string_names.h b/scene/scene_string_names.h
index dbbcf79b9f..25e2c5d4a6 100644
--- a/scene/scene_string_names.h
+++ b/scene/scene_string_names.h
@@ -31,8 +31,8 @@
 #ifndef SCENE_STRING_NAMES_H
 #define SCENE_STRING_NAMES_H
 
-#include "node_path.h"
-#include "string_db.h"
+#include "core/node_path.h"
+#include "core/string_db.h"
 class SceneStringNames {
 
 	friend void register_scene_types();
diff --git a/servers/arvr/arvr_interface.h b/servers/arvr/arvr_interface.h
index 910b401db9..b26ee6cb1b 100644
--- a/servers/arvr/arvr_interface.h
+++ b/servers/arvr/arvr_interface.h
@@ -32,7 +32,7 @@
 #define ARVR_INTERFACE_H
 
 #include "core/math/camera_matrix.h"
-#include "os/thread_safe.h"
+#include "core/os/thread_safe.h"
 #include "scene/main/viewport.h"
 #include "servers/arvr_server.h"
 
diff --git a/servers/arvr/arvr_positional_tracker.h b/servers/arvr/arvr_positional_tracker.h
index 525e47a681..69b89f11d3 100644
--- a/servers/arvr/arvr_positional_tracker.h
+++ b/servers/arvr/arvr_positional_tracker.h
@@ -31,7 +31,7 @@
 #ifndef ARVR_POSITIONAL_TRACKER_H
 #define ARVR_POSITIONAL_TRACKER_H
 
-#include "os/thread_safe.h"
+#include "core/os/thread_safe.h"
 #include "servers/arvr_server.h"
 
 /**
diff --git a/servers/arvr_server.cpp b/servers/arvr_server.cpp
index 2040377dd4..55f8ea8f5b 100644
--- a/servers/arvr_server.cpp
+++ b/servers/arvr_server.cpp
@@ -31,7 +31,7 @@
 #include "arvr_server.h"
 #include "arvr/arvr_interface.h"
 #include "arvr/arvr_positional_tracker.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 
 ARVRServer *ARVRServer::singleton = NULL;
 
diff --git a/servers/arvr_server.h b/servers/arvr_server.h
index 1f4d84fe19..25318aff4b 100644
--- a/servers/arvr_server.h
+++ b/servers/arvr_server.h
@@ -31,11 +31,11 @@
 #ifndef ARVR_SERVER_H
 #define ARVR_SERVER_H
 
-#include "os/os.h"
-#include "os/thread_safe.h"
-#include "reference.h"
-#include "rid.h"
-#include "variant.h"
+#include "core/os/os.h"
+#include "core/os/thread_safe.h"
+#include "core/reference.h"
+#include "core/rid.h"
+#include "core/variant.h"
 
 class ARVRInterface;
 class ARVRPositionalTracker;
diff --git a/servers/audio/audio_driver_dummy.cpp b/servers/audio/audio_driver_dummy.cpp
index be36c3b748..512ff5da7b 100644
--- a/servers/audio/audio_driver_dummy.cpp
+++ b/servers/audio/audio_driver_dummy.cpp
@@ -30,8 +30,8 @@
 
 #include "audio_driver_dummy.h"
 
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 Error AudioDriverDummy::init() {
 
diff --git a/servers/audio/audio_effect.h b/servers/audio/audio_effect.h
index b950e824c0..bbabedbc30 100644
--- a/servers/audio/audio_effect.h
+++ b/servers/audio/audio_effect.h
@@ -31,8 +31,8 @@
 #ifndef AUDIOEFFECT_H
 #define AUDIOEFFECT_H
 
-#include "audio_frame.h"
-#include "resource.h"
+#include "core/math/audio_frame.h"
+#include "core/resource.h"
 
 class AudioEffectInstance : public Reference {
 	GDCLASS(AudioEffectInstance, Reference)
diff --git a/servers/audio/audio_filter_sw.h b/servers/audio/audio_filter_sw.h
index 4174f9bd51..d137ed8ff9 100644
--- a/servers/audio/audio_filter_sw.h
+++ b/servers/audio/audio_filter_sw.h
@@ -31,7 +31,7 @@
 #ifndef AUDIO_FILTER_SW_H
 #define AUDIO_FILTER_SW_H
 
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 
 class AudioFilterSW {
 public:
diff --git a/servers/audio/audio_rb_resampler.cpp b/servers/audio/audio_rb_resampler.cpp
index 3414351681..3ae897c299 100644
--- a/servers/audio/audio_rb_resampler.cpp
+++ b/servers/audio/audio_rb_resampler.cpp
@@ -30,7 +30,7 @@
 
 #include "audio_rb_resampler.h"
 #include "core/math/math_funcs.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "servers/audio_server.h"
 
 int AudioRBResampler::get_channel_count() const {
diff --git a/servers/audio/audio_rb_resampler.h b/servers/audio/audio_rb_resampler.h
index 6ef79c93fa..b21c480fc4 100644
--- a/servers/audio/audio_rb_resampler.h
+++ b/servers/audio/audio_rb_resampler.h
@@ -31,9 +31,9 @@
 #ifndef AUDIO_RB_RESAMPLER_H
 #define AUDIO_RB_RESAMPLER_H
 
-#include "os/memory.h"
+#include "core/os/memory.h"
+#include "core/typedefs.h"
 #include "servers/audio_server.h"
-#include "typedefs.h"
 
 struct AudioRBResampler {
 
diff --git a/servers/audio/audio_stream.cpp b/servers/audio/audio_stream.cpp
index eef8aba0c4..45d66cd8f2 100644
--- a/servers/audio/audio_stream.cpp
+++ b/servers/audio/audio_stream.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_stream.h"
-#include "os/os.h"
+#include "core/os/os.h"
 
 //////////////////////////////
 
diff --git a/servers/audio/audio_stream.h b/servers/audio/audio_stream.h
index 66e1b6ee2f..c7763890fc 100644
--- a/servers/audio/audio_stream.h
+++ b/servers/audio/audio_stream.h
@@ -31,8 +31,8 @@
 #ifndef AUDIO_STREAM_H
 #define AUDIO_STREAM_H
 
-#include "image.h"
-#include "resource.h"
+#include "core/image.h"
+#include "core/resource.h"
 #include "servers/audio/audio_filter_sw.h"
 #include "servers/audio_server.h"
 
diff --git a/servers/audio/effects/audio_effect_chorus.cpp b/servers/audio/effects/audio_effect_chorus.cpp
index fd9e3311e7..3c88d050f6 100644
--- a/servers/audio/effects/audio_effect_chorus.cpp
+++ b/servers/audio/effects/audio_effect_chorus.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_effect_chorus.h"
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include "servers/audio_server.h"
 
 void AudioEffectChorusInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
diff --git a/servers/audio/effects/audio_effect_delay.cpp b/servers/audio/effects/audio_effect_delay.cpp
index e3af898afa..abc10ee096 100644
--- a/servers/audio/effects/audio_effect_delay.cpp
+++ b/servers/audio/effects/audio_effect_delay.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_effect_delay.h"
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include "servers/audio_server.h"
 
 void AudioEffectDelayInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
diff --git a/servers/audio/effects/audio_effect_distortion.cpp b/servers/audio/effects/audio_effect_distortion.cpp
index c9ac0db644..0422083363 100644
--- a/servers/audio/effects/audio_effect_distortion.cpp
+++ b/servers/audio/effects/audio_effect_distortion.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_effect_distortion.h"
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include "servers/audio_server.h"
 
 void AudioEffectDistortionInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
diff --git a/servers/audio/effects/audio_effect_phaser.cpp b/servers/audio/effects/audio_effect_phaser.cpp
index c0a9bd773d..3151111ec8 100644
--- a/servers/audio/effects/audio_effect_phaser.cpp
+++ b/servers/audio/effects/audio_effect_phaser.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "audio_effect_phaser.h"
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include "servers/audio_server.h"
 
 void AudioEffectPhaserInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
diff --git a/servers/audio/effects/audio_effect_pitch_shift.cpp b/servers/audio/effects/audio_effect_pitch_shift.cpp
index c6d1217308..f5ca8f2da4 100644
--- a/servers/audio/effects/audio_effect_pitch_shift.cpp
+++ b/servers/audio/effects/audio_effect_pitch_shift.cpp
@@ -30,7 +30,7 @@
 
 #include "audio_effect_pitch_shift.h"
 
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include "servers/audio_server.h"
 
 /* Thirdparty code, so disable clang-format with Godot style */
diff --git a/servers/audio/effects/audio_effect_record.h b/servers/audio/effects/audio_effect_record.h
index e4f5ba8a23..5f5c7802b4 100644
--- a/servers/audio/effects/audio_effect_record.h
+++ b/servers/audio/effects/audio_effect_record.h
@@ -31,11 +31,11 @@
 #ifndef AUDIOEFFECTRECORD_H
 #define AUDIOEFFECTRECORD_H
 
+#include "core/io/marshalls.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
 #include "core/os/thread.h"
 #include "editor/import/resource_importer_wav.h"
-#include "io/marshalls.h"
-#include "os/file_access.h"
-#include "os/os.h"
 #include "scene/resources/audio_stream_sample.h"
 #include "servers/audio/audio_effect.h"
 #include "servers/audio_server.h"
diff --git a/servers/audio/effects/eq.cpp b/servers/audio/effects/eq.cpp
index b15fc7ecf4..70ac70a5a8 100644
--- a/servers/audio/effects/eq.cpp
+++ b/servers/audio/effects/eq.cpp
@@ -31,8 +31,8 @@
 // Author: reduzio@gmail.com (C) 2006
 
 #include "eq.h"
-#include "error_macros.h"
-#include "math_funcs.h"
+#include "core/error_macros.h"
+#include "core/math/math_funcs.h"
 #include <math.h>
 
 #define POW2(v) ((v) * (v))
diff --git a/servers/audio/effects/eq.h b/servers/audio/effects/eq.h
index 5c654529c3..c06f1f8bf8 100644
--- a/servers/audio/effects/eq.h
+++ b/servers/audio/effects/eq.h
@@ -33,8 +33,8 @@
 #ifndef EQ_FILTER_H
 #define EQ_FILTER_H
 
-#include "typedefs.h"
-#include "vector.h"
+#include "core/typedefs.h"
+#include "core/vector.h"
 
 /**
 @author Juan Linietsky
diff --git a/servers/audio/effects/reverb.cpp b/servers/audio/effects/reverb.cpp
index 5e31202e58..ef23e4aaf3 100644
--- a/servers/audio/effects/reverb.cpp
+++ b/servers/audio/effects/reverb.cpp
@@ -31,7 +31,7 @@
 // Author: Juan Linietsky <reduzio@gmail.com>, (C) 2006
 
 #include "reverb.h"
-#include "math_funcs.h"
+#include "core/math/math_funcs.h"
 #include <math.h>
 
 const float Reverb::comb_tunings[MAX_COMBS] = {
diff --git a/servers/audio/effects/reverb.h b/servers/audio/effects/reverb.h
index c3d3873dcd..03cf197456 100644
--- a/servers/audio/effects/reverb.h
+++ b/servers/audio/effects/reverb.h
@@ -33,9 +33,9 @@
 #ifndef REVERB_H
 #define REVERB_H
 
-#include "audio_frame.h"
-#include "os/memory.h"
-#include "typedefs.h"
+#include "core/math/audio_frame.h"
+#include "core/os/memory.h"
+#include "core/typedefs.h"
 
 class Reverb {
 public:
diff --git a/servers/audio/reverb_sw.cpp b/servers/audio/reverb_sw.cpp
index 52e7699deb..13742d5db5 100644
--- a/servers/audio/reverb_sw.cpp
+++ b/servers/audio/reverb_sw.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "reverb_sw.h"
-#include "print_string.h"
+#include "core/print_string.h"
 #include "stdlib.h"
 #define SETMIN(x, y) (x) = MIN((x), (y))
 #define rangeloop(c, min, max) \
diff --git a/servers/audio/reverb_sw.h b/servers/audio/reverb_sw.h
index 15f9a43183..26b3fa5166 100644
--- a/servers/audio/reverb_sw.h
+++ b/servers/audio/reverb_sw.h
@@ -31,8 +31,8 @@
 #ifndef REVERB_SW_H
 #define REVERB_SW_H
 
-#include "os/memory.h"
-#include "typedefs.h"
+#include "core/os/memory.h"
+#include "core/typedefs.h"
 
 class ReverbParamsSW;
 
diff --git a/servers/audio/voice_rb_sw.h b/servers/audio/voice_rb_sw.h
index 42045428a8..fc02cc1827 100644
--- a/servers/audio/voice_rb_sw.h
+++ b/servers/audio/voice_rb_sw.h
@@ -31,7 +31,7 @@
 #ifndef VOICE_RB_SW_H
 #define VOICE_RB_SW_H
 
-#include "os/os.h"
+#include "core/os/os.h"
 #include "servers/audio_server.h"
 class VoiceRBSW {
 public:
diff --git a/servers/audio_server.cpp b/servers/audio_server.cpp
index db178e0df8..070099a3d8 100644
--- a/servers/audio_server.cpp
+++ b/servers/audio_server.cpp
@@ -29,10 +29,10 @@
 /*************************************************************************/
 
 #include "audio_server.h"
-#include "io/resource_loader.h"
-#include "os/file_access.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/io/resource_loader.h"
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 #include "scene/resources/audio_stream_sample.h"
 #include "servers/audio/audio_driver_dummy.h"
 #include "servers/audio/effects/audio_effect_compressor.h"
diff --git a/servers/audio_server.h b/servers/audio_server.h
index 2663a0f968..ba6569eb38 100644
--- a/servers/audio_server.h
+++ b/servers/audio_server.h
@@ -31,11 +31,11 @@
 #ifndef AUDIO_SERVER_H
 #define AUDIO_SERVER_H
 
-#include "audio_frame.h"
-#include "object.h"
-#include "os/os.h"
+#include "core/math/audio_frame.h"
+#include "core/object.h"
+#include "core/os/os.h"
+#include "core/variant.h"
 #include "servers/audio/audio_effect.h"
-#include "variant.h"
 
 class AudioDriverDummy;
 class AudioStream;
diff --git a/servers/physics/area_sw.h b/servers/physics/area_sw.h
index ae19b0e04e..63a4db5d02 100644
--- a/servers/physics/area_sw.h
+++ b/servers/physics/area_sw.h
@@ -32,7 +32,7 @@
 #define AREA_SW_H
 
 #include "collision_object_sw.h"
-#include "self_list.h"
+#include "core/self_list.h"
 #include "servers/physics_server.h"
 //#include "servers/physics/query_sw.h"
 
diff --git a/servers/physics/body_pair_sw.cpp b/servers/physics/body_pair_sw.cpp
index 0ce38e4486..357fc05355 100644
--- a/servers/physics/body_pair_sw.cpp
+++ b/servers/physics/body_pair_sw.cpp
@@ -31,7 +31,7 @@
 #include "body_pair_sw.h"
 
 #include "collision_solver_sw.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "space_sw.h"
 
 /*
diff --git a/servers/physics/body_sw.h b/servers/physics/body_sw.h
index 9d7b147fd6..0f7797254e 100644
--- a/servers/physics/body_sw.h
+++ b/servers/physics/body_sw.h
@@ -33,7 +33,7 @@
 
 #include "area_sw.h"
 #include "collision_object_sw.h"
-#include "vset.h"
+#include "core/vset.h"
 
 class ConstraintSW;
 
diff --git a/servers/physics/broad_phase_basic.cpp b/servers/physics/broad_phase_basic.cpp
index 52483a8b14..d55951b39a 100644
--- a/servers/physics/broad_phase_basic.cpp
+++ b/servers/physics/broad_phase_basic.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "broad_phase_basic.h"
-#include "list.h"
-#include "print_string.h"
+#include "core/list.h"
+#include "core/print_string.h"
 
 BroadPhaseSW::ID BroadPhaseBasic::create(CollisionObjectSW *p_object, int p_subindex) {
 
diff --git a/servers/physics/broad_phase_basic.h b/servers/physics/broad_phase_basic.h
index 47fcdb3060..500b8544a1 100644
--- a/servers/physics/broad_phase_basic.h
+++ b/servers/physics/broad_phase_basic.h
@@ -32,7 +32,7 @@
 #define BROAD_PHASE_BASIC_H
 
 #include "broad_phase_sw.h"
-#include "map.h"
+#include "core/map.h"
 
 class BroadPhaseBasic : public BroadPhaseSW {
 
diff --git a/servers/physics/broad_phase_octree.h b/servers/physics/broad_phase_octree.h
index e7028eba98..c4b8ecb299 100644
--- a/servers/physics/broad_phase_octree.h
+++ b/servers/physics/broad_phase_octree.h
@@ -32,7 +32,7 @@
 #define BROAD_PHASE_OCTREE_H
 
 #include "broad_phase_sw.h"
-#include "octree.h"
+#include "core/math/octree.h"
 
 class BroadPhaseOctree : public BroadPhaseSW {
 
diff --git a/servers/physics/broad_phase_sw.h b/servers/physics/broad_phase_sw.h
index 7559942cd4..2db1c1dd06 100644
--- a/servers/physics/broad_phase_sw.h
+++ b/servers/physics/broad_phase_sw.h
@@ -31,8 +31,8 @@
 #ifndef BROAD_PHASE_SW_H
 #define BROAD_PHASE_SW_H
 
-#include "aabb.h"
-#include "math_funcs.h"
+#include "core/math/aabb.h"
+#include "core/math/math_funcs.h"
 
 class CollisionObjectSW;
 
diff --git a/servers/physics/collision_object_sw.h b/servers/physics/collision_object_sw.h
index b6430b38dc..993799ee10 100644
--- a/servers/physics/collision_object_sw.h
+++ b/servers/physics/collision_object_sw.h
@@ -32,7 +32,7 @@
 #define COLLISION_OBJECT_SW_H
 
 #include "broad_phase_sw.h"
-#include "self_list.h"
+#include "core/self_list.h"
 #include "servers/physics_server.h"
 #include "shape_sw.h"
 
diff --git a/servers/physics/collision_solver_sat.cpp b/servers/physics/collision_solver_sat.cpp
index 294b1df241..087ae570fb 100644
--- a/servers/physics/collision_solver_sat.cpp
+++ b/servers/physics/collision_solver_sat.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "collision_solver_sat.h"
-#include "geometry.h"
+#include "core/math/geometry.h"
 
 #define _EDGE_IS_VALID_SUPPORT_THRESHOLD 0.02
 
diff --git a/servers/physics/joints/jacobian_entry_sw.h b/servers/physics/joints/jacobian_entry_sw.h
index 42c90c9ae9..4bc1255a9a 100644
--- a/servers/physics/joints/jacobian_entry_sw.h
+++ b/servers/physics/joints/jacobian_entry_sw.h
@@ -50,7 +50,7 @@ subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
-#include "transform.h"
+#include "core/math/transform.h"
 
 class JacobianEntrySW {
 public:
diff --git a/servers/physics/physics_server_sw.cpp b/servers/physics/physics_server_sw.cpp
index 472283833e..76a6138817 100644
--- a/servers/physics/physics_server_sw.cpp
+++ b/servers/physics/physics_server_sw.cpp
@@ -32,13 +32,13 @@
 
 #include "broad_phase_basic.h"
 #include "broad_phase_octree.h"
+#include "core/os/os.h"
+#include "core/script_language.h"
 #include "joints/cone_twist_joint_sw.h"
 #include "joints/generic_6dof_joint_sw.h"
 #include "joints/hinge_joint_sw.h"
 #include "joints/pin_joint_sw.h"
 #include "joints/slider_joint_sw.h"
-#include "os/os.h"
-#include "script_language.h"
 
 RID PhysicsServerSW::shape_create(ShapeType p_shape) {
 
diff --git a/servers/physics/shape_sw.cpp b/servers/physics/shape_sw.cpp
index 9d2e5e846d..e1c985f44f 100644
--- a/servers/physics/shape_sw.cpp
+++ b/servers/physics/shape_sw.cpp
@@ -30,9 +30,9 @@
 
 #include "shape_sw.h"
 
-#include "geometry.h"
-#include "quick_hull.h"
-#include "sort.h"
+#include "core/math/geometry.h"
+#include "core/math/quick_hull.h"
+#include "core/sort.h"
 
 #define _POINT_SNAP 0.001953125
 #define _EDGE_IS_VALID_SUPPORT_THRESHOLD 0.0002
diff --git a/servers/physics/shape_sw.h b/servers/physics/shape_sw.h
index 7be818b23c..073d19e317 100644
--- a/servers/physics/shape_sw.h
+++ b/servers/physics/shape_sw.h
@@ -31,8 +31,8 @@
 #ifndef SHAPE_SW_H
 #define SHAPE_SW_H
 
-#include "bsp_tree.h"
-#include "geometry.h"
+#include "core/math/bsp_tree.h"
+#include "core/math/geometry.h"
 #include "servers/physics_server.h"
 /*
 
diff --git a/servers/physics/space_sw.cpp b/servers/physics/space_sw.cpp
index b2ab7bec16..925fa47eac 100644
--- a/servers/physics/space_sw.cpp
+++ b/servers/physics/space_sw.cpp
@@ -31,8 +31,8 @@
 #include "space_sw.h"
 
 #include "collision_solver_sw.h"
+#include "core/project_settings.h"
 #include "physics_server_sw.h"
-#include "project_settings.h"
 
 _FORCE_INLINE_ static bool _can_collide_with(CollisionObjectSW *p_object, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
 
diff --git a/servers/physics/space_sw.h b/servers/physics/space_sw.h
index e7231df532..d550b374e3 100644
--- a/servers/physics/space_sw.h
+++ b/servers/physics/space_sw.h
@@ -37,9 +37,9 @@
 #include "body_sw.h"
 #include "broad_phase_sw.h"
 #include "collision_object_sw.h"
-#include "hash_map.h"
-#include "project_settings.h"
-#include "typedefs.h"
+#include "core/hash_map.h"
+#include "core/project_settings.h"
+#include "core/typedefs.h"
 
 class PhysicsDirectSpaceStateSW : public PhysicsDirectSpaceState {
 
diff --git a/servers/physics/step_sw.cpp b/servers/physics/step_sw.cpp
index 4128e1ec1a..5238f24b20 100644
--- a/servers/physics/step_sw.cpp
+++ b/servers/physics/step_sw.cpp
@@ -31,7 +31,7 @@
 #include "step_sw.h"
 #include "joints_sw.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 void StepSW::_populate_island(BodySW *p_body, BodySW **p_island, ConstraintSW **p_constraint_island) {
 
diff --git a/servers/physics_2d/area_2d_sw.h b/servers/physics_2d/area_2d_sw.h
index d2058ad5af..90e30f68bc 100644
--- a/servers/physics_2d/area_2d_sw.h
+++ b/servers/physics_2d/area_2d_sw.h
@@ -32,7 +32,7 @@
 #define AREA_2D_SW_H
 
 #include "collision_object_2d_sw.h"
-#include "self_list.h"
+#include "core/self_list.h"
 #include "servers/physics_2d_server.h"
 //#include "servers/physics/query_sw.h"
 
diff --git a/servers/physics_2d/body_2d_sw.h b/servers/physics_2d/body_2d_sw.h
index 69184ad484..97dff69a20 100644
--- a/servers/physics_2d/body_2d_sw.h
+++ b/servers/physics_2d/body_2d_sw.h
@@ -33,7 +33,7 @@
 
 #include "area_2d_sw.h"
 #include "collision_object_2d_sw.h"
-#include "vset.h"
+#include "core/vset.h"
 
 class Constraint2DSW;
 
diff --git a/servers/physics_2d/broad_phase_2d_basic.h b/servers/physics_2d/broad_phase_2d_basic.h
index f0f0b3df88..da5dc38b8e 100644
--- a/servers/physics_2d/broad_phase_2d_basic.h
+++ b/servers/physics_2d/broad_phase_2d_basic.h
@@ -31,7 +31,7 @@
 #ifndef BROAD_PHASE_2D_BASIC_H
 #define BROAD_PHASE_2D_BASIC_H
 
-#include "map.h"
+#include "core/map.h"
 #include "space_2d_sw.h"
 class BroadPhase2DBasic : public BroadPhase2DSW {
 
diff --git a/servers/physics_2d/broad_phase_2d_hash_grid.cpp b/servers/physics_2d/broad_phase_2d_hash_grid.cpp
index 1a5b2d5e3a..950f0f9d24 100644
--- a/servers/physics_2d/broad_phase_2d_hash_grid.cpp
+++ b/servers/physics_2d/broad_phase_2d_hash_grid.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "broad_phase_2d_hash_grid.h"
-#include "project_settings.h"
+#include "core/project_settings.h"
 
 #define LARGE_ELEMENT_FI 1.01239812
 
diff --git a/servers/physics_2d/broad_phase_2d_hash_grid.h b/servers/physics_2d/broad_phase_2d_hash_grid.h
index 5188abc837..0ecb915a7b 100644
--- a/servers/physics_2d/broad_phase_2d_hash_grid.h
+++ b/servers/physics_2d/broad_phase_2d_hash_grid.h
@@ -32,7 +32,7 @@
 #define BROAD_PHASE_2D_HASH_GRID_H
 
 #include "broad_phase_2d_sw.h"
-#include "map.h"
+#include "core/map.h"
 
 class BroadPhase2DHashGrid : public BroadPhase2DSW {
 
diff --git a/servers/physics_2d/broad_phase_2d_sw.h b/servers/physics_2d/broad_phase_2d_sw.h
index d7d236c4c6..5b512dac76 100644
--- a/servers/physics_2d/broad_phase_2d_sw.h
+++ b/servers/physics_2d/broad_phase_2d_sw.h
@@ -31,8 +31,8 @@
 #ifndef BROAD_PHASE_2D_SW_H
 #define BROAD_PHASE_2D_SW_H
 
-#include "math_funcs.h"
-#include "rect2.h"
+#include "core/math/math_funcs.h"
+#include "core/math/rect2.h"
 
 class CollisionObject2DSW;
 
diff --git a/servers/physics_2d/collision_object_2d_sw.h b/servers/physics_2d/collision_object_2d_sw.h
index 393c4a6ed7..c3b9e4b713 100644
--- a/servers/physics_2d/collision_object_2d_sw.h
+++ b/servers/physics_2d/collision_object_2d_sw.h
@@ -32,7 +32,7 @@
 #define COLLISION_OBJECT_2D_SW_H
 
 #include "broad_phase_2d_sw.h"
-#include "self_list.h"
+#include "core/self_list.h"
 #include "servers/physics_2d_server.h"
 #include "shape_2d_sw.h"
 
diff --git a/servers/physics_2d/collision_solver_2d_sat.cpp b/servers/physics_2d/collision_solver_2d_sat.cpp
index 98fe4adb80..0f32f2ec85 100644
--- a/servers/physics_2d/collision_solver_2d_sat.cpp
+++ b/servers/physics_2d/collision_solver_2d_sat.cpp
@@ -30,7 +30,7 @@
 
 #include "collision_solver_2d_sat.h"
 
-#include "geometry.h"
+#include "core/math/geometry.h"
 
 struct _CollectorCallback2D {
 
diff --git a/servers/physics_2d/physics_2d_server_sw.cpp b/servers/physics_2d/physics_2d_server_sw.cpp
index 721f21fc40..000e38c4a2 100644
--- a/servers/physics_2d/physics_2d_server_sw.cpp
+++ b/servers/physics_2d/physics_2d_server_sw.cpp
@@ -32,9 +32,9 @@
 #include "broad_phase_2d_basic.h"
 #include "broad_phase_2d_hash_grid.h"
 #include "collision_solver_2d_sw.h"
-#include "os/os.h"
-#include "project_settings.h"
-#include "script_language.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
 
 RID Physics2DServerSW::_shape_create(ShapeType p_shape) {
 
diff --git a/servers/physics_2d/physics_2d_server_wrap_mt.cpp b/servers/physics_2d/physics_2d_server_wrap_mt.cpp
index 804b93ecd8..3ded4b717a 100644
--- a/servers/physics_2d/physics_2d_server_wrap_mt.cpp
+++ b/servers/physics_2d/physics_2d_server_wrap_mt.cpp
@@ -30,7 +30,7 @@
 
 #include "physics_2d_server_wrap_mt.h"
 
-#include "os/os.h"
+#include "core/os/os.h"
 
 void Physics2DServerWrapMT::thread_exit() {
 
diff --git a/servers/physics_2d/physics_2d_server_wrap_mt.h b/servers/physics_2d/physics_2d_server_wrap_mt.h
index 6b34fb9739..5f5fd3866f 100644
--- a/servers/physics_2d/physics_2d_server_wrap_mt.h
+++ b/servers/physics_2d/physics_2d_server_wrap_mt.h
@@ -31,9 +31,9 @@
 #ifndef PHYSICS2DSERVERWRAPMT_H
 #define PHYSICS2DSERVERWRAPMT_H
 
-#include "command_queue_mt.h"
-#include "os/thread.h"
-#include "project_settings.h"
+#include "core/command_queue_mt.h"
+#include "core/os/thread.h"
+#include "core/project_settings.h"
 #include "servers/physics_2d_server.h"
 
 #ifdef DEBUG_SYNC
diff --git a/servers/physics_2d/shape_2d_sw.cpp b/servers/physics_2d/shape_2d_sw.cpp
index dc8ec23e69..94b0a0a0c7 100644
--- a/servers/physics_2d/shape_2d_sw.cpp
+++ b/servers/physics_2d/shape_2d_sw.cpp
@@ -30,8 +30,8 @@
 
 #include "shape_2d_sw.h"
 
-#include "geometry.h"
-#include "sort.h"
+#include "core/math/geometry.h"
+#include "core/sort.h"
 
 void Shape2DSW::configure(const Rect2 &p_aabb) {
 	aabb = p_aabb;
diff --git a/servers/physics_2d/space_2d_sw.cpp b/servers/physics_2d/space_2d_sw.cpp
index 746aa2d49b..be44eabdf0 100644
--- a/servers/physics_2d/space_2d_sw.cpp
+++ b/servers/physics_2d/space_2d_sw.cpp
@@ -31,7 +31,7 @@
 #include "space_2d_sw.h"
 
 #include "collision_solver_2d_sw.h"
-#include "pair.h"
+#include "core/pair.h"
 #include "physics_2d_server_sw.h"
 
 _FORCE_INLINE_ static bool _can_collide_with(CollisionObject2DSW *p_object, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
diff --git a/servers/physics_2d/space_2d_sw.h b/servers/physics_2d/space_2d_sw.h
index 6e2e025185..c894eb9c40 100644
--- a/servers/physics_2d/space_2d_sw.h
+++ b/servers/physics_2d/space_2d_sw.h
@@ -37,9 +37,9 @@
 #include "body_pair_2d_sw.h"
 #include "broad_phase_2d_sw.h"
 #include "collision_object_2d_sw.h"
-#include "hash_map.h"
-#include "project_settings.h"
-#include "typedefs.h"
+#include "core/hash_map.h"
+#include "core/project_settings.h"
+#include "core/typedefs.h"
 
 class Physics2DDirectSpaceStateSW : public Physics2DDirectSpaceState {
 
diff --git a/servers/physics_2d/step_2d_sw.cpp b/servers/physics_2d/step_2d_sw.cpp
index d1078f1506..0fb7af0c94 100644
--- a/servers/physics_2d/step_2d_sw.cpp
+++ b/servers/physics_2d/step_2d_sw.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "step_2d_sw.h"
-#include "os/os.h"
+#include "core/os/os.h"
 
 void Step2DSW::_populate_island(Body2DSW *p_body, Body2DSW **p_island, Constraint2DSW **p_constraint_island) {
 
diff --git a/servers/physics_2d_server.cpp b/servers/physics_2d_server.cpp
index 1d57b36734..3ca6e29f0b 100644
--- a/servers/physics_2d_server.cpp
+++ b/servers/physics_2d_server.cpp
@@ -29,9 +29,10 @@
 /*************************************************************************/
 
 #include "physics_2d_server.h"
+
 #include "core/method_bind_ext.gen.inc"
+#include "core/print_string.h"
 #include "core/project_settings.h"
-#include "print_string.h"
 
 Physics2DServer *Physics2DServer::singleton = NULL;
 
diff --git a/servers/physics_2d_server.h b/servers/physics_2d_server.h
index 82b4eb75d8..fc2a228723 100644
--- a/servers/physics_2d_server.h
+++ b/servers/physics_2d_server.h
@@ -31,9 +31,9 @@
 #ifndef PHYSICS_2D_SERVER_H
 #define PHYSICS_2D_SERVER_H
 
-#include "object.h"
-#include "reference.h"
-#include "resource.h"
+#include "core/object.h"
+#include "core/reference.h"
+#include "core/resource.h"
 
 class Physics2DDirectSpaceState;
 
diff --git a/servers/physics_server.cpp b/servers/physics_server.cpp
index 403c32fd82..0660c84d09 100644
--- a/servers/physics_server.cpp
+++ b/servers/physics_server.cpp
@@ -30,9 +30,9 @@
 
 #include "physics_server.h"
 
+#include "core/method_bind_ext.gen.inc"
+#include "core/print_string.h"
 #include "core/project_settings.h"
-#include "method_bind_ext.gen.inc"
-#include "print_string.h"
 
 PhysicsServer *PhysicsServer::singleton = NULL;
 
diff --git a/servers/physics_server.h b/servers/physics_server.h
index f2aa33a6cc..d0d2ec16f0 100644
--- a/servers/physics_server.h
+++ b/servers/physics_server.h
@@ -31,8 +31,8 @@
 #ifndef PHYSICS_SERVER_H
 #define PHYSICS_SERVER_H
 
-#include "object.h"
-#include "resource.h"
+#include "core/object.h"
+#include "core/resource.h"
 
 class PhysicsDirectSpaceState;
 
diff --git a/servers/register_server_types.cpp b/servers/register_server_types.cpp
index 4c764641e3..7deeec676b 100644
--- a/servers/register_server_types.cpp
+++ b/servers/register_server_types.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "register_server_types.h"
-#include "engine.h"
-#include "project_settings.h"
+#include "core/engine.h"
+#include "core/project_settings.h"
 
 #include "arvr/arvr_interface.h"
 #include "arvr/arvr_positional_tracker.h"
@@ -52,12 +52,12 @@
 #include "audio/effects/audio_effect_reverb.h"
 #include "audio/effects/audio_effect_stereo_enhance.h"
 #include "audio_server.h"
+#include "core/script_debugger_remote.h"
 #include "physics/physics_server_sw.h"
 #include "physics_2d/physics_2d_server_sw.h"
 #include "physics_2d/physics_2d_server_wrap_mt.h"
 #include "physics_2d_server.h"
 #include "physics_server.h"
-#include "script_debugger_remote.h"
 #include "visual/shader_types.h"
 #include "visual_server.h"
 
diff --git a/servers/visual/rasterizer.cpp b/servers/visual/rasterizer.cpp
index be46690e55..6c04d1de63 100644
--- a/servers/visual/rasterizer.cpp
+++ b/servers/visual/rasterizer.cpp
@@ -30,8 +30,8 @@
 
 #include "rasterizer.h"
 
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 
 Rasterizer *(*Rasterizer::_create_func)() = NULL;
 
diff --git a/servers/visual/rasterizer.h b/servers/visual/rasterizer.h
index 90f2972ddf..c26f02f087 100644
--- a/servers/visual/rasterizer.h
+++ b/servers/visual/rasterizer.h
@@ -31,10 +31,10 @@
 #ifndef RASTERIZER_H
 #define RASTERIZER_H
 
-#include "camera_matrix.h"
+#include "core/math/camera_matrix.h"
 #include "servers/visual_server.h"
 
-#include "self_list.h"
+#include "core/self_list.h"
 
 class RasterizerScene {
 public:
diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 9500f35732..8a8b8af267 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "shader_language.h"
-#include "os/os.h"
-#include "print_string.h"
+#include "core/os/os.h"
+#include "core/print_string.h"
 static bool _is_text_char(CharType c) {
 
 	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
diff --git a/servers/visual/shader_language.h b/servers/visual/shader_language.h
index d68f233b2f..e8ae099302 100644
--- a/servers/visual/shader_language.h
+++ b/servers/visual/shader_language.h
@@ -31,12 +31,12 @@
 #ifndef SHADER_LANGUAGE_H
 #define SHADER_LANGUAGE_H
 
-#include "list.h"
-#include "map.h"
-#include "string_db.h"
-#include "typedefs.h"
-#include "ustring.h"
-#include "variant.h"
+#include "core/list.h"
+#include "core/map.h"
+#include "core/string_db.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
+#include "core/variant.h"
 
 class ShaderLanguage {
 
diff --git a/servers/visual/shader_types.h b/servers/visual/shader_types.h
index 0680ec8242..e195b6ea20 100644
--- a/servers/visual/shader_types.h
+++ b/servers/visual/shader_types.h
@@ -31,7 +31,7 @@
 #ifndef SHADERTYPES_H
 #define SHADERTYPES_H
 
-#include "ordered_hash_map.h"
+#include "core/ordered_hash_map.h"
 #include "servers/visual_server.h"
 #include "shader_language.h"
 
diff --git a/servers/visual/visual_server_raster.cpp b/servers/visual/visual_server_raster.cpp
index c7d33ec43c..ea63ae5013 100644
--- a/servers/visual/visual_server_raster.cpp
+++ b/servers/visual/visual_server_raster.cpp
@@ -30,11 +30,11 @@
 
 #include "visual_server_raster.h"
 
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "core/sort.h"
 #include "default_mouse_cursor.xpm"
-#include "io/marshalls.h"
-#include "os/os.h"
-#include "project_settings.h"
-#include "sort.h"
 #include "visual_server_canvas.h"
 #include "visual_server_global.h"
 #include "visual_server_scene.h"
diff --git a/servers/visual/visual_server_raster.h b/servers/visual/visual_server_raster.h
index 7960c5468b..f25973c4e2 100644
--- a/servers/visual/visual_server_raster.h
+++ b/servers/visual/visual_server_raster.h
@@ -31,8 +31,8 @@
 #ifndef VISUAL_SERVER_RASTER_H
 #define VISUAL_SERVER_RASTER_H
 
-#include "allocators.h"
-#include "octree.h"
+#include "core/allocators.h"
+#include "core/math/octree.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
 #include "visual_server_canvas.h"
diff --git a/servers/visual/visual_server_scene.cpp b/servers/visual/visual_server_scene.cpp
index 1e255591f0..eacb5f671c 100644
--- a/servers/visual/visual_server_scene.cpp
+++ b/servers/visual/visual_server_scene.cpp
@@ -29,7 +29,7 @@
 /*************************************************************************/
 
 #include "visual_server_scene.h"
-#include "os/os.h"
+#include "core/os/os.h"
 #include "visual_server_global.h"
 #include "visual_server_raster.h"
 /* CAMERA API */
diff --git a/servers/visual/visual_server_scene.h b/servers/visual/visual_server_scene.h
index 12d732724a..87e19bc6b0 100644
--- a/servers/visual/visual_server_scene.h
+++ b/servers/visual/visual_server_scene.h
@@ -33,12 +33,12 @@
 
 #include "servers/visual/rasterizer.h"
 
-#include "allocators.h"
-#include "geometry.h"
-#include "octree.h"
-#include "os/semaphore.h"
-#include "os/thread.h"
-#include "self_list.h"
+#include "core/allocators.h"
+#include "core/math/geometry.h"
+#include "core/math/octree.h"
+#include "core/os/semaphore.h"
+#include "core/os/thread.h"
+#include "core/self_list.h"
 #include "servers/arvr/arvr_interface.h"
 
 class VisualServerScene {
diff --git a/servers/visual/visual_server_viewport.cpp b/servers/visual/visual_server_viewport.cpp
index 90acba306a..39ab8307f4 100644
--- a/servers/visual/visual_server_viewport.cpp
+++ b/servers/visual/visual_server_viewport.cpp
@@ -30,7 +30,7 @@
 
 #include "visual_server_viewport.h"
 
-#include "project_settings.h"
+#include "core/project_settings.h"
 #include "visual_server_canvas.h"
 #include "visual_server_global.h"
 #include "visual_server_scene.h"
diff --git a/servers/visual/visual_server_viewport.h b/servers/visual/visual_server_viewport.h
index f915e26b81..978d6ae4ae 100644
--- a/servers/visual/visual_server_viewport.h
+++ b/servers/visual/visual_server_viewport.h
@@ -31,8 +31,8 @@
 #ifndef VISUALSERVERVIEWPORT_H
 #define VISUALSERVERVIEWPORT_H
 
+#include "core/self_list.h"
 #include "rasterizer.h"
-#include "self_list.h"
 #include "servers/arvr/arvr_interface.h"
 #include "servers/visual_server.h"
 
diff --git a/servers/visual/visual_server_wrap_mt.cpp b/servers/visual/visual_server_wrap_mt.cpp
index 1cafc47685..f59d8af9cb 100644
--- a/servers/visual/visual_server_wrap_mt.cpp
+++ b/servers/visual/visual_server_wrap_mt.cpp
@@ -29,8 +29,8 @@
 /*************************************************************************/
 
 #include "visual_server_wrap_mt.h"
-#include "os/os.h"
-#include "project_settings.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
 
 void VisualServerWrapMT::thread_exit() {
 
diff --git a/servers/visual/visual_server_wrap_mt.h b/servers/visual/visual_server_wrap_mt.h
index fcf9b08968..85205e5132 100644
--- a/servers/visual/visual_server_wrap_mt.h
+++ b/servers/visual/visual_server_wrap_mt.h
@@ -31,8 +31,8 @@
 #ifndef VISUAL_SERVER_WRAP_MT_H
 #define VISUAL_SERVER_WRAP_MT_H
 
-#include "command_queue_mt.h"
-#include "os/thread.h"
+#include "core/command_queue_mt.h"
+#include "core/os/thread.h"
 #include "servers/visual_server.h"
 
 /**
diff --git a/servers/visual_server.cpp b/servers/visual_server.cpp
index 18a04e9a4b..d4e96bb173 100644
--- a/servers/visual_server.cpp
+++ b/servers/visual_server.cpp
@@ -30,8 +30,8 @@
 
 #include "visual_server.h"
 
-#include "method_bind_ext.gen.inc"
-#include "project_settings.h"
+#include "core/method_bind_ext.gen.inc"
+#include "core/project_settings.h"
 
 VisualServer *VisualServer::singleton = NULL;
 VisualServer *(*VisualServer::create_func)() = NULL;
diff --git a/servers/visual_server.h b/servers/visual_server.h
index e74df1269a..7c21d138e0 100644
--- a/servers/visual_server.h
+++ b/servers/visual_server.h
@@ -31,13 +31,13 @@
 #ifndef VISUAL_SERVER_H
 #define VISUAL_SERVER_H
 
-#include "bsp_tree.h"
-#include "geometry.h"
-#include "image.h"
-#include "object.h"
-#include "rid.h"
-#include "transform_2d.h"
-#include "variant.h"
+#include "core/image.h"
+#include "core/math/bsp_tree.h"
+#include "core/math/geometry.h"
+#include "core/math/transform_2d.h"
+#include "core/object.h"
+#include "core/rid.h"
+#include "core/variant.h"
 
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
diff --git a/thirdparty/b2d_convexdecomp/b2Glue.h b/thirdparty/b2d_convexdecomp/b2Glue.h
index 10c2f62361..175f75be75 100644
--- a/thirdparty/b2d_convexdecomp/b2Glue.h
+++ b/thirdparty/b2d_convexdecomp/b2Glue.h
@@ -19,7 +19,8 @@
 #ifndef B2GLUE_H
 #define B2GLUE_H
 
-#include "vector2.h"
+#include "core/math/vector2.h"
+
 #include <limits.h>
 
 namespace b2ConvexDecomp {
diff --git a/thirdparty/libogg/ogg/config_types.h b/thirdparty/libogg/ogg/config_types.h
index 5ea49b8abd..e630657547 100644
--- a/thirdparty/libogg/ogg/config_types.h
+++ b/thirdparty/libogg/ogg/config_types.h
@@ -1,7 +1,7 @@
 #ifndef __CONFIG_TYPES_H__
 #define __CONFIG_TYPES_H__
 
-#include "int_types.h"
+#include "core/int_types.h"
 
 typedef int16_t ogg_int16_t;
 typedef uint16_t ogg_uint16_t;
diff --git a/thirdparty/misc/aes256.h b/thirdparty/misc/aes256.h
index 8fcc25a4de..150a0670f5 100644
--- a/thirdparty/misc/aes256.h
+++ b/thirdparty/misc/aes256.h
@@ -21,7 +21,7 @@
 #ifndef AES_256_H
 #define AES_256_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/thirdparty/misc/hq2x.cpp b/thirdparty/misc/hq2x.cpp
index 7ebb505d64..9c089ba85c 100644
--- a/thirdparty/misc/hq2x.cpp
+++ b/thirdparty/misc/hq2x.cpp
@@ -16,8 +16,8 @@
 
 
 #include "hq2x.h"
-#include "math_funcs.h"
 
+#include "core/math/math_funcs.h"
 
 static const uint32_t AMASK = 0xFF000000;
 static const uint32_t YMASK = 0x00FF0000;
diff --git a/thirdparty/misc/hq2x.h b/thirdparty/misc/hq2x.h
index 8f119d2a01..bebd917950 100644
--- a/thirdparty/misc/hq2x.h
+++ b/thirdparty/misc/hq2x.h
@@ -1,7 +1,7 @@
 #ifndef HQ2X_H
 #define HQ2X_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 
 uint32_t *hq2x_resize(
diff --git a/thirdparty/misc/md5.h b/thirdparty/misc/md5.h
index e99d58b443..14b3cd3ddf 100644
--- a/thirdparty/misc/md5.h
+++ b/thirdparty/misc/md5.h
@@ -42,7 +42,7 @@
 
 /* NOT typedef a 32 bit type */
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 /* Data structure for MD5 (Message Digest) computation */
 typedef struct {
diff --git a/thirdparty/misc/pcg.h b/thirdparty/misc/pcg.h
index 81f4c9770e..e2d66d51d5 100644
--- a/thirdparty/misc/pcg.h
+++ b/thirdparty/misc/pcg.h
@@ -4,7 +4,7 @@
 #ifndef RANDOM_H
 #define RANDOM_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 #define PCG_DEFAULT_INC_64 1442695040888963407ULL
 
diff --git a/thirdparty/misc/triangulator.h b/thirdparty/misc/triangulator.h
index d1538cfae5..c85792fd50 100644
--- a/thirdparty/misc/triangulator.h
+++ b/thirdparty/misc/triangulator.h
@@ -21,11 +21,11 @@
 #ifndef TRIANGULATOR_H
 #define TRIANGULATOR_H
 
-#include "list.h"
-#include "set.h"
-#include "vector2.h"
-//2D point structure
+#include "core/list.h"
+#include "core/math/vector2.h"
+#include "core/set.h"
 
+//2D point structure
 
 #define TRIANGULATOR_CCW 1
 #define TRIANGULATOR_CW -1
diff --git a/thirdparty/misc/yuv2rgb.h b/thirdparty/misc/yuv2rgb.h
index d0c2813a75..3ec8388246 100644
--- a/thirdparty/misc/yuv2rgb.h
+++ b/thirdparty/misc/yuv2rgb.h
@@ -27,7 +27,7 @@ ship it.
 #ifndef YUV2RGB_H
 #define YUV2RGB_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 static const uint32_t tables[256*3] = {
 	/* y_table */
diff --git a/thirdparty/pvrtccompressor/BitScale.h b/thirdparty/pvrtccompressor/BitScale.h
index 36613aeeee..3ea7962f55 100644
--- a/thirdparty/pvrtccompressor/BitScale.h
+++ b/thirdparty/pvrtccompressor/BitScale.h
@@ -2,7 +2,7 @@
 
 #pragma once
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 //============================================================================