Add Godot 3.x -> Godot 4.x project converter

1 files changed, 29 insertions, 0 deletions

diff --git a/main/main.cpp b/main/main.cpp
index 15166ce152..b2667d11e6 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -87,6 +87,7 @@
 #include "editor/editor_settings.h"
 #include "editor/editor_translation.h"
 #include "editor/progress_dialog.h"
+#include "editor/project_converter_3_to_4.h"
 #include "editor/project_manager.h"
 #ifndef NO_EDITOR_SPLASH
 #include "main/splash_editor.gen.h"
@@ -368,6 +369,8 @@ void Main::print_help(const char *p_binary) {
 	OS::get_singleton()->print("                                               <path> should be absolute or relative to the project directory, and include the filename for the binary (e.g. 'builds/game.exe'). The target directory should exist.\n");
 	OS::get_singleton()->print("  --export-debug <preset> <path>               Same as --export, but using the debug template.\n");
 	OS::get_singleton()->print("  --export-pack <preset> <path>                Same as --export, but only export the game pack for the given preset. The <path> extension determines whether it will be in PCK or ZIP format.\n");
+	OS::get_singleton()->print("  --convert-3to4                               Converts project from Godot 3.x to Godot 4.x.\n");
+	OS::get_singleton()->print("  --validate-conversion-3to4                   Shows what elements will be renamed when converting project from Godot 3.x to Godot 4.x.\n");
 	OS::get_singleton()->print("  --doctool [<path>]                           Dump the engine API reference to the given <path> (defaults to current dir) in XML format, merging if existing files are found.\n");
 	OS::get_singleton()->print("  --no-docbase                                 Disallow dumping the base types (used with --doctool).\n");
 	OS::get_singleton()->print("  --build-solutions                            Build the scripting solutions (e.g. for C# projects). Implies --editor and requires a valid project to edit.\n");
@@ -996,6 +999,14 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 			editor = true;
 			cmdline_tool = true;
 			main_args.push_back(I->get());
+		} else if (I->get() == "--convert-3to4") {
+			// Actually handling is done in start().
+			cmdline_tool = true;
+			main_args.push_back(I->get());
+		} else if (I->get() == "--validate-conversion-3to4") {
+			// Actually handling is done in start().
+			cmdline_tool = true;
+			main_args.push_back(I->get());
 		} else if (I->get() == "--doctool") {
 			// Actually handling is done in start().
 			cmdline_tool = true;
@@ -2035,6 +2046,8 @@ bool Main::start() {
 	String _export_preset;
 	bool export_debug = false;
 	bool export_pack_only = false;
+	bool converting_project = false;
+	bool validating_converting_project = false;
 #endif
 
 	main_timer_sync.init(OS::get_singleton()->get_ticks_usec());
@@ -2050,6 +2063,10 @@ bool Main::start() {
 #ifdef TOOLS_ENABLED
 		} else if (args[i] == "--no-docbase") {
 			doc_base = false;
+		} else if (args[i] == "--convert-3to4") {
+			converting_project = true;
+		} else if (args[i] == "--validate-conversion-3to4") {
+			validating_converting_project = true;
 		} else if (args[i] == "-e" || args[i] == "--editor") {
 			editor = true;
 		} else if (args[i] == "-p" || args[i] == "--project-manager") {
@@ -2203,6 +2220,18 @@ bool Main::start() {
 		NativeExtensionAPIDump::generate_extension_json_file("extension_api.json");
 		return false;
 	}
+
+	if (converting_project) {
+		int exit_code = ProjectConverter3To4().convert();
+		OS::get_singleton()->set_exit_code(exit_code);
+		return false;
+	}
+	if (validating_converting_project) {
+		int exit_code = ProjectConverter3To4().validate_conversion();
+		OS::get_singleton()->set_exit_code(exit_code);
+		return false;
+	}
+
 #endif
 
 	if (script.is_empty() && game_path.is_empty() && String(GLOBAL_GET("application/run/main_scene")) != "") {