auto save

snake.py

@@ -18,9 +18,8 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type == locals.KEYDOWN:
-           if event.key==locals.K_RIGHT and setheading !="left"  
-    
+    x+= 30
+    position.append((x, y))
     position.pop(0)       
     # 将背景图画上去
     screen.blit(background, (0, 0))