save project

my_game.py

@@ -64,7 +64,7 @@ while True:
             index=0
             index=0
 
 
     # 将背景图画上去
     # 将背景图画上去
-    screen.blit(background, (0, 0))
+    screen.blit(background, (background_x, 0))
     road_x-=8
     road_x-=8
     if road_x<=-1000:
     if road_x<=-1000:
         road_x=0
         road_x=0