Add loading when load warcraft scene

scenes/main.gd

@@ -3,7 +3,7 @@ extends Node
 export (PackedScene) var about = load("res://scenes/UI/About.tscn")
 export (PackedScene) var scenes = load("res://scenes/UI/ChooseScene.tscn")
 
-var scene
+var current_scene = null
 
 # Quit the game
 func _on_Quit_pressed():
@@ -12,17 +12,17 @@ func _on_Quit_pressed():
 # Load scene about
 func _on_About_pressed():
 	_prepare_change_scene()
-	scene = about.instance()
-	add_child(scene)
+	current_scene = about.instance()
+	add_child(current_scene)
 
 # Load scene for select game
 func _on_New_pressed():
 	_prepare_change_scene()
-	scene = scenes.instance()
-	add_child(scene)
+	current_scene = scenes.instance()
+	add_child(current_scene)
 
 ## PRIVATE
 func _prepare_change_scene():
-	if (scene != null):
-		remove_child(scene)
-		scene.call_deferred("free")
+	if (current_scene != null):
+		remove_child(current_scene)
+		current_scene.call_deferred("free")