Detect external modification of project.godot

2 files changed, 9 insertions, 2 deletions

diff --git a/core/config/project_settings.cpp b/core/config/project_settings.cpp
index 70e8133eaa..9b28ef7b81 100644
--- a/core/config/project_settings.cpp
+++ b/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) {
diff --git a/core/config/project_settings.h b/core/config/project_settings.h
index 59c56c23c2..645506f302 100644
--- a/core/config/project_settings.h
+++ b/core/config/project_settings.h
@@ -78,6 +78,8 @@ protected:
 
 	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 @@ protected:
 
 	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 @@ public:
 	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;