Move map data to its own .scn, split map_rebuilder into two steps

godot/maps/meta/map_rebuilder.gd

@@ -19,24 +19,50 @@ extends Node
 #   --headless --editor --path godot res://maps/${MAP_BASE_NAME}/${MAP_BASE_NAME}.tscn -- --rebuild-map
 # Another step might be useful for actually running the game.
 
+enum MapPart { MAP_MAIN, MAP_STATIC }
+
+@export var map_part: MapPart = MapPart.MAP_MAIN
+
 func _ready() -> void:
+	if not Engine.is_editor_hint():
+		return
+	
 	var args: PackedStringArray = OS.get_cmdline_user_args()
 	if args.has("--rebuild-map"):
 		var success: bool = rebuild_map()
 		get_tree().quit(0 if success else 1)
 
 func rebuild_map() -> bool:
-	var map: Map = get_parent()
+	var parent: Node = get_parent()
+	if parent != get_tree().edited_scene_root:
+		# This map_rebuilder is likely the static one, but the scene open in the
+		# editor is the main one. Skip!
+		print("[map_rebuilder] Skipping ", MapPart.find_key(map_part), " processing due to not being the currently open scene. (This is expected.)")
+		return true
+	
+	# Ensure the map has actually changed since this scene was last saved
+	var scene_path = get_tree().edited_scene_root.scene_file_path
+	var scene_modified = FileAccess.get_modified_time(scene_path)
+	var map_path = scene_path.replace("_static.scn", ".map").replace(".tscn", ".map")
+	var map_modified = FileAccess.get_modified_time(map_path)
+	if scene_modified > map_modified:
+		print("[map_rebuilder] ", MapPart.find_key(map_part), " is already up to date with the .map file, skipping.")
+		return true
 	
 	# Rebuild func_godot_map
-	var func_godot_maps: Array = map.find_children("*", "FuncGodotMap")
+	if map_part == MapPart.MAP_STATIC:
+		print("[map_rebuilder] Rebuilding FuncGodotMap...")
+		var scene: Node3D = parent
+		var func_godot_maps: Array = scene.find_children("*", "FuncGodotMap")
 		assert(len(func_godot_maps) == 1)
 		var func_godot_map: FuncGodotMap = func_godot_maps[0]
-	print("Rebuilding ", func_godot_map.name, "...")
 		func_godot_map.build()
-	print(func_godot_map.name, " rebuilt. Registering spawners...")
+		print("[map_rebuilder] ", func_godot_map.name, " rebuilt.")
 	
 	# Hook up team and ball spawns
+	if map_part == MapPart.MAP_MAIN:
+		print("[map_rebuilder] Hooking up spawners for the map...")
+		var map: Map = parent
 		map.spawners = []
 		var spawner_count: int = 0
 		var spawn_entities: Array = map.find_children("*", "SpawnEntity")
@@ -50,11 +76,12 @@ func rebuild_map() -> bool:
 					map.spawners.push_back(null)
 				map.spawners[spawn_entity.team_index] = spawn_entity
 				spawner_count += 1
-	print(spawner_count, " spawners registered. Saving scene...")
+		print("[map_rebuilder] ", spawner_count, " spawners registered.")
 	
+	# Save current scene
 	var packed_scene = PackedScene.new()
 	packed_scene.pack(get_tree().edited_scene_root)
-	ResourceSaver.save(packed_scene, get_tree().edited_scene_root.scene_file_path)
-	print("Scene saved. All rebuilding steps complete!")
+	ResourceSaver.save(packed_scene, scene_path)
+	print("[map_rebuilder] Scene saved.")
 	
 	return true