From 669c91bfd0f026108015a98dd585f775b92ae4d1 Mon Sep 17 00:00:00 2001
From: NoNormalDev <190293561+NoNormalDev@users.noreply.github.com>
Date: Sat, 16 May 2026 17:51:29 +0200
Subject: [PATCH] Ensure project.godot exists before running the project in the
 editor

---
 editor/run/editor_run_bar.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/editor/run/editor_run_bar.cpp b/editor/run/editor_run_bar.cpp
index 530555cf0b..1d61bada7b 100644
--- a/editor/run/editor_run_bar.cpp
+++ b/editor/run/editor_run_bar.cpp
@@ -265,6 +265,18 @@ void EditorRunBar::_run_scene(const String &p_scene_path, const Vector<String> &
 
 	_reset_play_buttons();
 
+	String resource_path = ProjectSettings::get_singleton()->get_resource_path();
+	if (!resource_path.is_empty()) {
+		String project_file_path = resource_path.path_join("project.godot");
+		if (!FileAccess::exists(project_file_path)) {
+			// TODO: Try to recover the "project.godot" file using ProjectSettings::get_singleton()->save()
+			EditorNode::get_singleton()->show_warning(
+					TTRC("Failed to run the project because the project.godot file is missing."),
+					TTRC("Error!"));
+			return;
+		}
+	}
+
 	String write_movie_file;
 	if (is_movie_maker_enabled()) {
 		if (current_mode == RUN_CURRENT) {