15 files changed, 174 insertions, 230 deletions

diff --git a/platform/android/java_glue.cpp b/platform/android/java_glue.cpp
index 9baf58c3eb..579c06f76b 100644
--- a/platform/android/java_glue.cpp
+++ b/platform/android/java_glue.cpp
@@ -936,6 +936,9 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_newcontext(JNIEnv *en
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_back(JNIEnv *env, jobject obj) {
+	if (step == 0)
+		return;
+
 	os_android->main_loop_request_go_back();
 }
 
@@ -976,6 +979,9 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_step(JNIEnv *env, job
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_touch(JNIEnv *env, jobject obj, jint ev, jint pointer, jint count, jintArray positions) {
 
+	if (step == 0)
+		return;
+
 	Vector<OS_Android::TouchPos> points;
 	for (int i = 0; i < count; i++) {
 
@@ -1250,6 +1256,8 @@ static unsigned int android_get_keysym(unsigned int p_code) {
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joybutton(JNIEnv *env, jobject obj, jint p_device, jint p_button, jboolean p_pressed) {
+	if (step == 0)
+		return;
 
 	OS_Android::JoypadEvent jevent;
 	jevent.device = p_device;
@@ -1261,6 +1269,8 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joybutton(JNIEnv *env
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joyaxis(JNIEnv *env, jobject obj, jint p_device, jint p_axis, jfloat p_value) {
+	if (step == 0)
+		return;
 
 	OS_Android::JoypadEvent jevent;
 	jevent.device = p_device;
@@ -1272,6 +1282,9 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joyaxis(JNIEnv *env,
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joyhat(JNIEnv *env, jobject obj, jint p_device, jint p_hat_x, jint p_hat_y) {
+	if (step == 0)
+		return;
+
 	OS_Android::JoypadEvent jevent;
 	jevent.device = p_device;
 	jevent.type = OS_Android::JOY_EVENT_HAT;
@@ -1301,6 +1314,8 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_joyconnectionchanged(
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_key(JNIEnv *env, jobject obj, jint p_scancode, jint p_unicode_char, jboolean p_pressed) {
+	if (step == 0)
+		return;
 
 	Ref<InputEventKey> ievent;
 	ievent.instance();
@@ -1344,14 +1359,18 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_gyroscope(JNIEnv *env
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_focusin(JNIEnv *env, jobject obj) {
 
-	if (os_android && step > 0)
-		os_android->main_loop_focusin();
+	if (step == 0)
+		return;
+
+	os_android->main_loop_focusin();
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_focusout(JNIEnv *env, jobject obj) {
 
-	if (os_android && step > 0)
-		os_android->main_loop_focusout();
+	if (step == 0)
+		return;
+
+	os_android->main_loop_focusout();
 }
 
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_audio(JNIEnv *env, jobject obj) {
diff --git a/platform/iphone/SCsub b/platform/iphone/SCsub
index 6b5f30dc41..b96bec16b4 100644
--- a/platform/iphone/SCsub
+++ b/platform/iphone/SCsub
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+import os
 
 Import('env')
 
@@ -21,6 +22,10 @@ ios_lib = env_ios.add_library('iphone', iphone_lib)
 
 def combine_libs(target=None, source=None, env=None):
     lib_path = target[0].srcnode().abspath
-    env.Execute('$IPHONEPATH/usr/bin/libtool -static -o "' + lib_path + '" ' + ' '.join([('"' + lib.srcnode().abspath + '"') for lib in source]))
+    if ("OSXCROSS_IOS" in os.environ):
+        libtool = '$IPHONEPATH/usr/bin/${ios_triple}libtool'
+    else:
+        libtool = "$IPHONEPATH/usr/bin/libtool"
+    env.Execute(libtool + ' -static -o "' + lib_path + '" ' + ' '.join([('"' + lib.srcnode().abspath + '"') for lib in source]))
 
 combine_command = env_ios.Command('#bin/libgodot' + env_ios['LIBSUFFIX'], [ios_lib] + env_ios['LIBS'], combine_libs)
diff --git a/platform/iphone/power_iphone.cpp b/platform/iphone/power_iphone.cpp
index 95a9aa9705..7f9dadc363 100644
--- a/platform/iphone/power_iphone.cpp
+++ b/platform/iphone/power_iphone.cpp
@@ -30,7 +30,7 @@
 
 #include "power_iphone.h"
 
-bool OS::PowerState::UpdatePowerInfo() {
+bool PowerIphone::UpdatePowerInfo() {
 	return false;
 }
 
diff --git a/platform/javascript/SCsub b/platform/javascript/SCsub
index 66a8a8d93c..5991075e29 100644
--- a/platform/javascript/SCsub
+++ b/platform/javascript/SCsub
@@ -3,38 +3,35 @@
 Import('env')
 
 javascript_files = [
-    "os_javascript.cpp",
-    "audio_driver_javascript.cpp",
-    "javascript_main.cpp",
-    "power_javascript.cpp",
-    "http_client_javascript.cpp",
-    "javascript_eval.cpp",
+    'audio_driver_javascript.cpp',
+    'http_client_javascript.cpp',
+    'javascript_eval.cpp',
+    'javascript_main.cpp',
+    'os_javascript.cpp',
 ]
 
-env_javascript = env.Clone()
-if env['target'] == "profile":
-    env_javascript.Append(CPPFLAGS=['-DPROFILER_ENABLED'])
-
-javascript_objects = []
-for x in javascript_files:
-    javascript_objects.append(env_javascript.Object(x))
-
-env.Append(LINKFLAGS=["-s", "EXPORTED_FUNCTIONS=\"['_main','_main_after_fs_sync','_send_notification']\""])
-
-target_dir = env.Dir("#bin")
-build = env.add_program(['#bin/godot', target_dir.File('godot' + env['PROGSUFFIX'] + '.wasm')], javascript_objects, PROGSUFFIX=env['PROGSUFFIX'] + '.js');
+build = env.add_program(['#bin/godot${PROGSUFFIX}.js', '#bin/godot${PROGSUFFIX}.wasm'], javascript_files);
 js, wasm = build
 
-js_libraries = []
-js_libraries.append(env.File('http_request.js'))
+js_libraries = [
+    'http_request.js',
+]
 for lib in js_libraries:
-    env.Append(LINKFLAGS=['--js-library', lib.path])
+    env.Append(LINKFLAGS=['--js-library', env.File(lib).path])
 env.Depends(build, js_libraries)
 
 wrapper_start = env.File('pre.js')
 wrapper_end = env.File('engine.js')
-js_final = env.Textfile('#bin/godot', [wrapper_start, js, wrapper_end], TEXTFILESUFFIX=env['PROGSUFFIX'] + '.wrapped.js')
-
-zip_dir = target_dir.Dir('.javascript_zip')
-zip_files = env.InstallAs([zip_dir.File('godot.js'), zip_dir.File('godot.wasm'), zip_dir.File('godot.html')], [js_final, wasm, '#misc/dist/html/default.html'])
-Zip('#bin/godot', zip_files, ZIPSUFFIX=env['PROGSUFFIX'] + env['ZIPSUFFIX'], ZIPROOT=zip_dir, ZIPCOMSTR="Archving $SOURCES as $TARGET")
+js_wrapped = env.Textfile('#bin/godot', [wrapper_start, js, wrapper_end], TEXTFILESUFFIX='${PROGSUFFIX}.wrapped.js')
+
+zip_dir = env.Dir('#bin/.javascript_zip')
+zip_files = env.InstallAs([
+    zip_dir.File('godot.js'),
+    zip_dir.File('godot.wasm'),
+    zip_dir.File('godot.html')
+], [
+	js_wrapped,
+	wasm,
+	'#misc/dist/html/default.html'
+])
+env.Zip('#bin/godot', zip_files, ZIPROOT=zip_dir, ZIPSUFFIX='${PROGSUFFIX}${ZIPSUFFIX}', ZIPCOMSTR='Archving $SOURCES as $TARGET')
diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index ad6b710382..a48cb872ee 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -8,23 +8,22 @@ def is_active():
 
 
 def get_name():
-    return "JavaScript"
+    return 'JavaScript'
 
 
 def can_build():
-
-    return ("EMSCRIPTEN_ROOT" in os.environ or "EMSCRIPTEN" in os.environ)
+    return 'EM_CONFIG' in os.environ or os.path.exists(os.path.expanduser('~/.emscripten'))
 
 
 def get_opts():
     from SCons.Variables import BoolVariable
     return [
+        # eval() can be a security concern, so it can be disabled.
         BoolVariable('javascript_eval', 'Enable JavaScript eval interface', True),
     ]
 
 
 def get_flags():
-
     return [
         ('tools', False),
         ('module_theora_enabled', False),
@@ -36,24 +35,11 @@ def get_flags():
     ]
 
 
-def create(env):
-
-    # remove Windows' .exe suffix
-    return env.Clone(tools=['textfile', 'zip'], PROGSUFFIX='')
-
-
-def escape_sources_backslashes(target, source, env, for_signature):
-    return [path.replace('\\','\\\\') for path in env.GetBuildPath(source)]
-
-def escape_target_backslashes(target, source, env, for_signature):
-    return env.GetBuildPath(target[0]).replace('\\','\\\\')
-
-
 def configure(env):
 
     ## Build type
 
-    if (env["target"] == "release"):
+    if env['target'] == 'release' or env['target'] == 'profile':
         # Use -Os to prioritize optimizing for reduced file size. This is
         # particularly valuable for the web platform because it directly
         # decreases download time.
@@ -62,66 +48,102 @@ def configure(env):
         # run-time performance.
         env.Append(CCFLAGS=['-Os'])
         env.Append(LINKFLAGS=['-Os'])
+        if env['target'] == 'profile':
+            env.Append(LINKFLAGS=['--profiling-funcs'])
 
-    elif (env["target"] == "release_debug"):
-        env.Append(CCFLAGS=['-O2', '-DDEBUG_ENABLED'])
+    elif env['target'] == 'release_debug':
+        env.Append(CPPDEFINES=['DEBUG_ENABLED'])
+        env.Append(CCFLAGS=['-O2'])
         env.Append(LINKFLAGS=['-O2'])
-        # retain function names at the cost of file size, for backtraces and profiling
+        # Retain function names for backtraces at the cost of file size.
         env.Append(LINKFLAGS=['--profiling-funcs'])
 
-    elif (env["target"] == "debug"):
-        env.Append(CCFLAGS=['-O1', '-D_DEBUG', '-g', '-DDEBUG_ENABLED'])
+    elif env['target'] == 'debug':
+        env.Append(CPPDEFINES=['DEBUG_ENABLED'])
+        env.Append(CCFLAGS=['-O1', '-g'])
         env.Append(LINKFLAGS=['-O1', '-g'])
         env.Append(LINKFLAGS=['-s', 'ASSERTIONS=1'])
 
     ## Compiler configuration
 
     env['ENV'] = os.environ
-    if ("EMSCRIPTEN_ROOT" in os.environ):
-        env.PrependENVPath('PATH', os.environ['EMSCRIPTEN_ROOT'])
-    elif ("EMSCRIPTEN" in os.environ):
-        env.PrependENVPath('PATH', os.environ['EMSCRIPTEN'])
-    env['CC']      = 'emcc'
-    env['CXX']     = 'em++'
-    env['LINK']    = 'emcc'
-    env['RANLIB']  = 'emranlib'
-    # Emscripten's ar has issues with duplicate file names, so use cc
-    env['AR']      = 'emcc'
-    env['ARFLAGS'] = '-o'
-
-    if (os.name == 'nt'):
-        # use TempFileMunge on Windows since some commands get too long for
-        # cmd.exe even with spawn_fix
-        # need to escape backslashes for this
-        env['ESCAPED_SOURCES'] = escape_sources_backslashes
-        env['ESCAPED_TARGET'] = escape_target_backslashes
-        env['ARCOM'] = '${TEMPFILE("%s")}' % env['ARCOM'].replace('$SOURCES', '$ESCAPED_SOURCES').replace('$TARGET', '$ESCAPED_TARGET')
 
+    em_config_file = os.getenv('EM_CONFIG') or os.path.expanduser('~/.emscripten')
+    if not os.path.exists(em_config_file):
+        raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
+    with open(em_config_file) as f:
+        em_config = {}
+        try:
+            # Emscripten configuration file is a Python file with simple assignments.
+            exec(f.read(), em_config)
+        except StandardError as e:
+            raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
+    if 'EMSCRIPTEN_ROOT' not in em_config:
+        raise RuntimeError("'EMSCRIPTEN_ROOT' missing in Emscripten configuration file '%s'" % em_config_file)
+    env.PrependENVPath('PATH', em_config['EMSCRIPTEN_ROOT'])
+
+    env['CC'] = 'emcc'
+    env['CXX'] = 'em++'
+    env['LINK'] = 'emcc'
+
+    # Emscripten's ar has issues with duplicate file names, so use cc.
+    env['AR'] = 'emcc'
+    env['ARFLAGS'] = '-o'
+    # emranlib is a noop, so it's safe to use with AR=emcc.
+    env['RANLIB'] = 'emranlib'
+
+    # Use TempFileMunge since some AR invocations are too long for cmd.exe.
+    # Use POSIX-style paths, required with TempFileMunge.
+    env['ARCOM_POSIX'] = env['ARCOM'].replace(
+        '$TARGET', '$TARGET.posix').replace(
+        '$SOURCES', '$SOURCES.posix')
+    env['ARCOM'] = '${TEMPFILE(ARCOM_POSIX)}'
+
+    # All intermediate files are just LLVM bitcode.
+    env['OBJPREFIX'] = ''
     env['OBJSUFFIX'] = '.bc'
+    env['PROGPREFIX'] = ''
+    # Program() output consists of multiple files, so specify suffixes manually at builder.
+    env['PROGSUFFIX'] = ''
+    env['LIBPREFIX'] = 'lib'
     env['LIBSUFFIX'] = '.bc'
+    env['LIBPREFIXES'] = ['$LIBPREFIX']
+    env['LIBSUFFIXES'] = ['$LIBSUFFIX']
 
     ## Compile flags
 
     env.Append(CPPPATH=['#platform/javascript'])
-    env.Append(CPPFLAGS=['-DJAVASCRIPT_ENABLED', '-DUNIX_ENABLED', '-DTYPED_METHOD_BIND', '-DNO_THREADS'])
-    env.Append(CPPFLAGS=['-DGLES3_ENABLED'])
+    env.Append(CPPDEFINES=['JAVASCRIPT_ENABLED', 'UNIX_ENABLED'])
+
+    # No multi-threading (SharedArrayBuffer) available yet,
+    # once feasible also consider memory buffer size issues.
+    env.Append(CPPDEFINES=['NO_THREADS'])
 
-    # These flags help keep the file size down
-    env.Append(CPPFLAGS=["-fno-exceptions", '-DNO_SAFE_CAST', '-fno-rtti'])
+    # These flags help keep the file size down.
+    env.Append(CCFLAGS=['-fno-exceptions', '-fno-rtti'])
+    # Don't use dynamic_cast, necessary with no-rtti.
+    env.Append(CPPDEFINES=['NO_SAFE_CAST'])
 
     if env['javascript_eval']:
-        env.Append(CPPFLAGS=['-DJAVASCRIPT_EVAL_ENABLED'])
+        env.Append(CPPDEFINES=['JAVASCRIPT_EVAL_ENABLED'])
 
     ## Link flags
 
     env.Append(LINKFLAGS=['-s', 'BINARYEN=1'])
+
+    # Allow increasing memory buffer size during runtime. This is efficient
+    # when using WebAssembly (in comparison to asm.js) and works well for
+    # us since we don't know requirements at compile-time.
     env.Append(LINKFLAGS=['-s', 'ALLOW_MEMORY_GROWTH=1'])
+
+    # This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
     env.Append(LINKFLAGS=['-s', 'USE_WEBGL2=1'])
-    env.Append(LINKFLAGS=['-s', 'EXTRA_EXPORTED_RUNTIME_METHODS="[\'FS\']"'])
 
     env.Append(LINKFLAGS=['-s', 'INVOKE_RUN=0'])
+
+    # TODO: Reevaluate usage of this setting now that engine.js manages engine runtime.
     env.Append(LINKFLAGS=['-s', 'NO_EXIT_RUNTIME=1'])
 
-    # TODO: Move that to opus module's config
+    # TODO: Move that to opus module's config.
     if 'module_opus_enabled' in env and env['module_opus_enabled']:
-        env.opus_fixed_point = "yes"
+        env.opus_fixed_point = 'yes'
diff --git a/platform/javascript/engine.js b/platform/javascript/engine.js
index e6fb48d0d2..e4839af433 100644
--- a/platform/javascript/engine.js
+++ b/platform/javascript/engine.js
@@ -1,3 +1,5 @@
+		exposedLibs['PATH'] = PATH;
+		exposedLibs['FS'] = FS;
 		return Module;
 	},
 };
@@ -12,6 +14,13 @@
 
 	var loadingFiles = {};
 
+	function getPathLeaf(path) {
+
+		while (path.endsWith('/'))
+			path = path.slice(0, -1);
+		return path.slice(path.lastIndexOf('/') + 1);
+	}
+
 	function getBasePath(path) {
 
 		if (path.endsWith('/'))
@@ -23,14 +32,15 @@
 
 	function getBaseName(path) {
 
-		path = getBasePath(path);
-		return path.slice(path.lastIndexOf('/') + 1);
+		return getPathLeaf(getBasePath(path));
 	}
 
 	Engine = function Engine() {
 
 		this.rtenv = null;
 
+		var LIBS = {};
+
 		var initPromise = null;
 		var unloadAfterInit = true;
 
@@ -80,11 +90,11 @@
 			return new Promise(function(resolve, reject) {
 				rtenvProps.onRuntimeInitialized = resolve;
 				rtenvProps.onAbort = reject;
-				rtenvProps.engine.rtenv = Engine.RuntimeEnvironment(rtenvProps);
+				rtenvProps.engine.rtenv = Engine.RuntimeEnvironment(rtenvProps, LIBS);
 			});
 		}
 
-		this.preloadFile = function(pathOrBuffer, bufferFilename) {
+		this.preloadFile = function(pathOrBuffer, destPath) {
 
 			if (pathOrBuffer instanceof ArrayBuffer) {
 				pathOrBuffer = new Uint8Array(pathOrBuffer);
@@ -93,14 +103,14 @@
 			}
 			if (pathOrBuffer instanceof Uint8Array) {
 				preloadedFiles.push({
-					name: bufferFilename,
+					path: destPath,
 					buffer: pathOrBuffer
 				});
 				return Promise.resolve();
 			} else if (typeof pathOrBuffer === 'string') {
 				return loadPromise(pathOrBuffer, preloadProgressTracker).then(function(xhr) {
 					preloadedFiles.push({
-						name: pathOrBuffer,
+						path: destPath || pathOrBuffer,
 						buffer: xhr.response
 					});
 				});
@@ -119,7 +129,12 @@
 		this.startGame = function(mainPack) {
 
 			executableName = getBaseName(mainPack);
-			return Promise.all([this.init(getBasePath(mainPack)), this.preloadFile(mainPack)]).then(
+			return Promise.all([
+				// Load from directory,
+				this.init(getBasePath(mainPack)),
+				// ...but write to root where the engine expects it.
+				this.preloadFile(mainPack, getPathLeaf(mainPack))
+			]).then(
 				Function.prototype.apply.bind(synchronousStart, this, [])
 			);
 		};
@@ -163,7 +178,16 @@
 			this.rtenv.thisProgram = executableName || getBaseName(basePath);
 
 			preloadedFiles.forEach(function(file) {
-				this.rtenv.FS.createDataFile('/', file.name, new Uint8Array(file.buffer), true, true, true);
+				var dir = LIBS.PATH.dirname(file.path);
+				try {
+					LIBS.FS.stat(dir);
+				} catch (e) {
+					if (e.code !== 'ENOENT') {
+						throw e;
+					}
+					LIBS.FS.mkdirTree(dir);
+				}
+				LIBS.FS.createDataFile('/', file.path, new Uint8Array(file.buffer), true, true, true);
 			}, this);
 
 			preloadedFiles = null;
diff --git a/platform/javascript/http_client_javascript.cpp b/platform/javascript/http_client_javascript.cpp
index 118a77835e..8d90e01ae1 100644
--- a/platform/javascript/http_client_javascript.cpp
+++ b/platform/javascript/http_client_javascript.cpp
@@ -88,7 +88,7 @@ Error HTTPClient::prepare_request(Method p_method, const String &p_url, const Ve
 	ERR_FAIL_COND_V(port < 0, ERR_UNCONFIGURED);
 	ERR_FAIL_COND_V(!p_url.begins_with("/"), ERR_INVALID_PARAMETER);
 
-	String url = (use_tls ? "https://" : "http://") + host + ":" + itos(port) + "/" + p_url;
+	String url = (use_tls ? "https://" : "http://") + host + ":" + itos(port) + p_url;
 	godot_xhr_reset(xhr_id);
 	godot_xhr_open(xhr_id, _methods[p_method], url.utf8().get_data(),
 			username.empty() ? NULL : username.utf8().get_data(),
diff --git a/platform/javascript/javascript_main.cpp b/platform/javascript/javascript_main.cpp
index e85fe0800f..54d4755bd7 100644
--- a/platform/javascript/javascript_main.cpp
+++ b/platform/javascript/javascript_main.cpp
@@ -40,7 +40,7 @@ static void main_loop() {
 	os->main_loop_iterate();
 }
 
-extern "C" void main_after_fs_sync(char *p_idbfs_err) {
+extern "C" EMSCRIPTEN_KEEPALIVE void main_after_fs_sync(char *p_idbfs_err) {
 
 	String idbfs_err = String::utf8(p_idbfs_err);
 	if (!idbfs_err.empty()) {
diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index cbfe99ba2d..a275fb7929 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -413,14 +413,13 @@ static EM_BOOL joy_callback_func(int p_type, const EmscriptenGamepadEvent *p_eve
 	return false;
 }
 
-extern "C" {
-void send_notification(int notif) {
+extern "C" EMSCRIPTEN_KEEPALIVE void send_notification(int notif) {
+
 	if (notif == MainLoop::NOTIFICATION_WM_MOUSE_ENTER || notif == MainLoop::NOTIFICATION_WM_MOUSE_EXIT) {
 		_cursor_inside_canvas = notif == MainLoop::NOTIFICATION_WM_MOUSE_ENTER;
 	}
 	OS_JavaScript::get_singleton()->get_main_loop()->notification(notif);
 }
-}
 
 Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver) {
 
@@ -480,8 +479,6 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
 	input = memnew(InputDefault);
 	_input = input;
 
-	power_manager = memnew(PowerJavascript);
-
 #define EM_CHECK(ev)                         \
 	if (result != EMSCRIPTEN_RESULT_SUCCESS) \
 	ERR_PRINTS("Error while setting " #ev " callback: Code " + itos(result))
@@ -968,15 +965,21 @@ String OS_JavaScript::get_joy_guid(int p_device) const {
 }
 
 OS::PowerState OS_JavaScript::get_power_state() {
-	return power_manager->get_power_state();
+
+	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to POWERSTATE_UNKNOWN");
+	return OS::POWERSTATE_UNKNOWN;
 }
 
 int OS_JavaScript::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
+
+	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
+	return -1;
 }
 
 int OS_JavaScript::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
+
+	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
+	return -1;
 }
 
 bool OS_JavaScript::_check_internal_feature_support(const String &p_feature) {
diff --git a/platform/javascript/os_javascript.h b/platform/javascript/os_javascript.h
index f0ba9422e8..46eb1b3f13 100644
--- a/platform/javascript/os_javascript.h
+++ b/platform/javascript/os_javascript.h
@@ -36,7 +36,6 @@
 #include "main/input_default.h"
 #include "os/input.h"
 #include "os/main_loop.h"
-#include "power_javascript.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 
@@ -64,8 +63,6 @@ class OS_JavaScript : public OS_Unix {
 
 	GetUserDataDirFunc get_user_data_dir_func;
 
-	PowerJavascript *power_manager;
-
 	static void _close_notification_funcs(const String &p_file, int p_flags);
 
 	void process_joypads();
diff --git a/platform/javascript/power_javascript.cpp b/platform/javascript/power_javascript.cpp
deleted file mode 100644
index 5241644dbc..0000000000
--- a/platform/javascript/power_javascript.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-/*************************************************************************/
-/*  power_javascript.cpp                                                 */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "power_javascript.h"
-#include "error_macros.h"
-
-bool PowerJavascript::UpdatePowerInfo() {
-	// TODO Javascript implementation
-	return false;
-}
-
-OS::PowerState PowerJavascript::get_power_state() {
-	if (UpdatePowerInfo()) {
-		return power_state;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to POWERSTATE_UNKNOWN");
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerJavascript::get_power_seconds_left() {
-	if (UpdatePowerInfo()) {
-		return nsecs_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
-
-int PowerJavascript::get_power_percent_left() {
-	if (UpdatePowerInfo()) {
-		return percent_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
-
-PowerJavascript::PowerJavascript() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerJavascript::~PowerJavascript() {
-}
diff --git a/platform/javascript/power_javascript.h b/platform/javascript/power_javascript.h
deleted file mode 100644
index c0c564aa60..0000000000
--- a/platform/javascript/power_javascript.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*************************************************************************/
-/*  power_javascript.h                                                   */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef PLATFORM_JAVASCRIPT_POWER_JAVASCRIPT_H_
-#define PLATFORM_JAVASCRIPT_POWER_JAVASCRIPT_H_
-
-#include "os/os.h"
-
-class PowerJavascript {
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	bool UpdatePowerInfo();
-
-public:
-	PowerJavascript();
-	virtual ~PowerJavascript();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif /* PLATFORM_JAVASCRIPT_POWER_JAVASCRIPT_H_ */
diff --git a/platform/javascript/pre.js b/platform/javascript/pre.js
index 311aa44fda..02194bc75e 100644
--- a/platform/javascript/pre.js
+++ b/platform/javascript/pre.js
@@ -1,2 +1,2 @@
 var Engine = {
-	RuntimeEnvironment: function(Module) {
+	RuntimeEnvironment: function(Module, exposedLibs) {
diff --git a/platform/osx/detect.py b/platform/osx/detect.py
index e51a8082f7..1e9631fae0 100644
--- a/platform/osx/detect.py
+++ b/platform/osx/detect.py
@@ -93,6 +93,7 @@ def configure(env):
         env['AR'] = basecmd + "ar"
         env['RANLIB'] = basecmd + "ranlib"
         env['AS'] = basecmd + "as"
+        env.Append(CCFLAGS=['-D__MACPORTS__']) #hack to fix libvpx MM256_BROADCASTSI128_SI256 define
 
     if (env["CXX"] == "clang++"):
         env.Append(CPPFLAGS=['-DTYPED_METHOD_BIND'])
diff --git a/platform/uwp/detect.py b/platform/uwp/detect.py
index 3ee195e4f9..0e7b125dc5 100644
--- a/platform/uwp/detect.py
+++ b/platform/uwp/detect.py
@@ -43,6 +43,8 @@ def get_flags():
 
 def configure(env):
 
+    env.msvc = True
+
     if (env["bits"] != "default"):
         print("Error: bits argument is disabled for MSVC")
         print("""