auto save

snake.py

@@ -22,14 +22,14 @@ while True:
             # 接收到退出事件后退出程序
             exit()
     # 将背景图画上去
-if setheading == locals.K_LEFT and sethding != "left":
+    if setheading == locals.K_LEFT and setheading != "left":
      setheading ='left'
 
-if setheading == locals.K_UP and sethding != "right":
+    if setheading == locals.K_UP and setheading != "right":
        setheading ='up'
-if setheading == locals.K_DOWN and sethding != "down":
+    if setheading == locals.K_DOWN and setheading != "down":
       setheading = 'down'
-if setheading == locals.K_RIGHT and sethding != "left":
+    if setheading == locals.K_RIGHT and setheading != "left":
      setheading = 'right'
         x +=30
     position.append((x,y))