auto save

my_game.py

@@ -26,7 +26,9 @@ while True:
     index +=1
     if index ==5:
         index = 0
-
+if rect.x <=0-rect.width:
+    obstacle = random.choice([bush,stone,cacti])
+    rect
 
     # 将背景图画上去
     screen.blit(background, (0, 0))