diff --git a/my_game.py b/my_game.py
index d71afa6..664659c 100644
--- a/my_game.py
+++ b/my_game.py
@@ -39,6 +39,7 @@ bg_x = 0
 road_x = 0
 
 # 创建障碍物
+time=0
 #obstacle = Block(bush,cacti,stone)
 block_list=pygame.sprite.Group()
 while True: