Detect external modification of project.godot

core/config/project_settings.cpp

@@ -597,6 +597,7 @@ Error ProjectSettings::_load_settings_text(const String &p_path) {
 			// If we're loading a project.godot from source code, we can operate some
 			// ProjectSettings conversions if need be.
 			_convert_to_last_version(config_version);
+			last_save_time = FileAccess::get_modified_time(get_resource_path().plus_file("project.godot"));
 			return OK;
 		} else if (err != OK) {
 			ERR_PRINT("Error parsing " + p_path + " at line " + itos(lines) + ": " + error_text + " File might be corrupted.");
@@ -676,7 +677,11 @@ void ProjectSettings::clear(const String &p_name) {
 }
 
 Error ProjectSettings::save() {
-	return save_custom(get_resource_path().plus_file("project.godot"));
+	Error error = save_custom(get_resource_path().plus_file("project.godot"));
+	if (error == OK) {
+		last_save_time = FileAccess::get_modified_time(get_resource_path().plus_file("project.godot"));
+	}
+	return error;
 }
 
 Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<String, List<String>> &props, const CustomMap &p_custom, const String &p_custom_features) {

core/config/project_settings.h

@@ -78,6 +78,8 @@ class ProjectSettings : public Object {
 
 	int last_order = NO_BUILTIN_ORDER_BASE;
 	int last_builtin_order = 0;
+	uint64_t last_save_time = 0;
+
 	Map<StringName, VariantContainer> props;
 	String resource_path;
 	Map<StringName, PropertyInfo> custom_prop_info;
@@ -113,7 +115,6 @@ class ProjectSettings : public Object {
 
 	Error _setup(const String &p_path, const String &p_main_pack, bool p_upwards = false);
 
-protected:
 	static void _bind_methods();
 
 public:
@@ -150,6 +151,7 @@ class ProjectSettings : public Object {
 	Error save();
 	void set_custom_property_info(const String &p_prop, const PropertyInfo &p_info);
 	const Map<StringName, PropertyInfo> &get_custom_property_info() const;
+	uint64_t get_last_saved_time() { return last_save_time; }
 
 	Vector<String> get_optimizer_presets() const;
 

editor/editor_data.h

@@ -111,7 +111,7 @@ class EditorData {
 	struct EditedScene {
 		Node *root = nullptr;
 		String path;
-		uint64_t file_modified_time;
+		uint64_t file_modified_time = 0;
 		Dictionary editor_states;
 		List<Node *> selection;
 		Vector<EditorHistory::History> history_stored;

editor/editor_node.cpp

@@ -904,13 +904,21 @@ void EditorNode::_scan_external_changes() {
 		}
 	}
 
+	String project_settings_path = ProjectSettings::get_singleton()->get_resource_path().plus_file("project.godot");
+	if (FileAccess::get_modified_time(project_settings_path) > ProjectSettings::get_singleton()->get_last_saved_time()) {
+		TreeItem *ti = disk_changed_list->create_item(r);
+		ti->set_text(0, "project.godot");
+		need_reload = true;
+	}
+
 	if (need_reload) {
 		disk_changed->call_deferred("popup_centered_ratio", 0.5);
 	}
 }
 
 void EditorNode::_resave_scenes(String p_str) {
 	save_all_scenes();
+	ProjectSettings::get_singleton()->save();
 	disk_changed->hide();
 }
 
@@ -932,7 +940,7 @@ void EditorNode::_reload_modified_scenes() {
 
 			Error err = load_scene(filename, false, false, true, false, true);
 			if (err != OK) {
-				ERR_PRINT("Failed to load scene");
+				ERR_PRINT(vformat("Failed to load scene: %s", filename));
 			}
 			editor_data.move_edited_scene_to_index(i);
 		}
@@ -944,6 +952,10 @@ void EditorNode::_reload_modified_scenes() {
 	disk_changed->hide();
 }
 
+void EditorNode::_reload_project_settings() {
+	ProjectSettings::get_singleton()->setup(ProjectSettings::get_singleton()->get_resource_path(), String(), true);
+}
+
 void EditorNode::_vp_resized() {
 }
 
@@ -6681,6 +6693,7 @@ EditorNode::EditorNode() {
 		disk_changed_list->set_v_size_flags(Control::SIZE_EXPAND_FILL);
 
 		disk_changed->connect("confirmed", callable_mp(this, &EditorNode::_reload_modified_scenes));
+		disk_changed->connect("confirmed", callable_mp(this, &EditorNode::_reload_project_settings));
 		disk_changed->get_ok_button()->set_text(TTR("Reload"));
 
 		disk_changed->add_button(TTR("Resave"), !DisplayServer::get_singleton()->get_swap_cancel_ok(), "resave");

editor/editor_node.h

@@ -646,6 +646,7 @@ class EditorNode : public Node {
 	void _resources_changed(const Vector<String> &p_resources);
 	void _scan_external_changes();
 	void _reload_modified_scenes();
+	void _reload_project_settings();
 	void _resave_scenes(String p_str);
 
 	void _feature_profile_changed();