1 files changed, 28 insertions, 0 deletions

diff --git a/editor/editor_data.cpp b/editor/editor_data.cpp
index 336bf26607..213c3f5631 100644
--- a/editor/editor_data.cpp
+++ b/editor/editor_data.cpp
@@ -500,6 +500,7 @@ int EditorData::add_edited_scene(int p_at_pos) {
 	EditedScene es;
 	es.root = nullptr;
 	es.path = String();
+	es.file_modified_time = 0;
 	es.history_current = -1;
 	es.version = 0;
 	es.live_edit_root = NodePath(String("/root"));
@@ -656,6 +657,10 @@ void EditorData::set_edited_scene_root(Node *p_root) {
 			p_root->set_filename(edited_scene[current_edited_scene].path);
 		}
 	}
+
+	if (edited_scene[current_edited_scene].path != "") {
+		edited_scene.write[current_edited_scene].file_modified_time = FileAccess::get_modified_time(edited_scene[current_edited_scene].path);
+	}
 }
 
 int EditorData::get_edited_scene_count() const {
@@ -687,6 +692,21 @@ uint64_t EditorData::get_scene_version(int p_idx) const {
 	return edited_scene[p_idx].version;
 }
 
+void EditorData::set_scene_modified_time(int p_idx, uint64_t p_time) {
+	if (p_idx == -1) {
+		p_idx = current_edited_scene;
+	}
+
+	ERR_FAIL_INDEX(p_idx, edited_scene.size());
+
+	edited_scene.write[p_idx].file_modified_time = p_time;
+}
+
+uint64_t EditorData::get_scene_modified_time(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx, edited_scene.size(), 0);
+	return edited_scene[p_idx].file_modified_time;
+}
+
 String EditorData::get_scene_type(int p_idx) const {
 	ERR_FAIL_INDEX_V(p_idx, edited_scene.size(), String());
 	if (!edited_scene[p_idx].root) {
@@ -922,6 +942,14 @@ void EditorData::script_class_save_icon_paths() {
 		}
 	}
 
+	Dictionary old;
+	if (ProjectSettings::get_singleton()->has_setting("_global_script_class_icons")) {
+		old = ProjectSettings::get_singleton()->get("_global_script_class_icons");
+	}
+	if ((!old.is_empty() || d.is_empty()) && d.hash() == old.hash()) {
+		return;
+	}
+
 	if (d.is_empty()) {
 		if (ProjectSettings::get_singleton()->has_setting("_global_script_class_icons")) {
 			ProjectSettings::get_singleton()->clear("_global_script_class_icons");