Method _save_scene

editor/editor_node.cpp:2134–2216

}

void EditorNode::_save_scene(String p_file, int idx) {
	ERR_FAIL_COND_MSG(!saving_scene.is_empty() && saving_scene == p_file, "Scene saved while already being saved!");

	Node *scene = editor_data.get_edited_scene_root(idx);

	if (!scene) {
		show_accept(TTR("This operation can't be done without a tree root."), TTR("OK"));
		return;
	}

	if (!scene->get_scene_file_path().is_empty() && _validate_scene_recursive(scene->get_scene_file_path(), scene)) {
		show_accept(TTR("This scene can't be saved because there is a cyclic instance inclusion.\nPlease resolve it and then attempt to save again."), TTR("OK"));
		return;
	}

	scene->propagate_notification(NOTIFICATION_EDITOR_PRE_SAVE);

	editor_data.apply_changes_in_editors();
	save_default_environment();
	List<Pair<AnimationMixer *, Ref<AnimatedValuesBackup>>> anim_backups;
	_reset_animation_mixers(scene, &anim_backups);
	_save_editor_states(p_file, idx);

	Ref<PackedScene> sdata;

	if (ResourceCache::has(p_file)) {
		// Something may be referencing this resource and we are good with that.
		// We must update it, but also let the previous scene state go, as
		// old version still work for referencing changes in instantiated or inherited scenes.

		sdata = ResourceCache::get_ref(p_file);
		if (sdata.is_valid()) {
			sdata->recreate_state();
		} else {
			sdata.instantiate();
		}
	} else {
		sdata.instantiate();
	}
	Error err = sdata->pack(scene);

	if (err != OK) {
		show_accept(TTR("Couldn't save scene. Likely dependencies (instances or inheritance) couldn't be satisfied."), TTR("OK"));
		return;
	}

	int flg = 0;
	if (EDITOR_GET("filesystem/on_save/compress_binary_resources")) {
		flg |= ResourceSaver::FLAG_COMPRESS;
	}
	flg |= ResourceSaver::FLAG_REPLACE_SUBRESOURCE_PATHS;

	err = ResourceSaver::save(sdata, p_file, flg);

	// This needs to be emitted before saving external resources.
	emit_signal(SNAME("scene_saved"), p_file);
	editor_data.notify_scene_saved(p_file);