+ def post(cls, scene_cls):
+ super(SceneChangeEvent, cls).post(scene_cls=scene_cls)
+
+
+class QuitGameEvent(NajaEvent):
+ TYPE = "QUIT_GAME"
+
+
+class InvalidateTheWorld(NajaEvent):
+ # This is used to signal to all the widgets that the world has changed
+ # and cached state may need to be recreated
+ TYPE = "INVALIDATE"
+
+
+class SelectEvent(NajaEvent):
+ TYPE = "SELECT"