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[3.x] Backport Accept global classes for MainLoop type in project settings 

https://github.com/godotengine/godot/pull/41190
This commit is contained in:
tommyZZM 2021-09-06 20:21:53 +08:00
parent f09ea4f0c8
commit f2a3af47e4
1 changed files with 18 additions and 3 deletions
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21
main/main.cpp
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@ -1590,7 +1590,6 @@ bool Main::start() {
}
}
String main_loop_type;
#ifdef TOOLS_ENABLED
if (doc_tool_path != "") {
Engine::get_singleton()->set_editor_hint(true); // Needed to instance editor-only classes for their default values
@ -1661,6 +1660,7 @@ bool Main::start() {
if (editor) {
main_loop = memnew(SceneTree);
};
String main_loop_type = GLOBAL_DEF("application/run/main_loop_type", "SceneTree");
if (test != "") {
#ifdef TOOLS_ENABLED
@ -1699,8 +1699,23 @@ bool Main::start() {
return false;
}
} else {
main_loop_type = GLOBAL_DEF("application/run/main_loop_type", "");
} else { // Not based on script path.
if (!editor && !ClassDB::class_exists(main_loop_type) && ScriptServer::is_global_class(main_loop_type)) {
String script_path = ScriptServer::get_global_class_path(main_loop_type);
Ref<Script> script_res = ResourceLoader::load(script_path, "Script", true);
StringName script_base = ScriptServer::get_global_class_native_base(main_loop_type);
Object *obj = ClassDB::instance(script_base);
MainLoop *script_loop = Object::cast_to<MainLoop>(obj);
if (!script_loop) {
if (obj) {
memdelete(obj);
}
OS::get_singleton()->alert("Error: Invalid MainLoop script base type: " + script_base);
ERR_FAIL_V_MSG(false, vformat("The global class %s does not inherit from SceneTree or MainLoop.", main_loop_type));
}
script_loop->set_init_script(script_res);
main_loop = script_loop;
}
}
if (!main_loop && main_loop_type == "") {