auto save

my_game.py

@@ -68,7 +68,7 @@ while True:
     if shan_x <-1000:
     if shan_x <-1000:
         shan_x=0
         shan_x=0
     screen.blit(background, (shan_x, 0))     # 远处背景
     screen.blit(background, (shan_x, 0))     # 远处背景
-    lu_x -=8
+    lu_x -=4
     if lu_x <-1000:
     if lu_x <-1000:
         lu_x=0
         lu_x=0
     screen.blit(road, (lu_x, 500))     # 路
     screen.blit(road, (lu_x, 500))     # 路