save project

my_game.py

@@ -60,8 +60,8 @@ while True:
         if index >= 5:
             index = 0
     # 将背景图画上去
-     background_x-=1
-     if background_x<=-1000:
+    background_x-=1
+    if background_x<=-1000:
         background_x=0
     screen.blit(background, (background_x, 0))     # 远处背景
     road_x-=8