auto save

snake.py

@@ -12,17 +12,37 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-left = 
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+
 
 x,y=240,120
 position=[(180,90)(180,120)(210,120)(x,y)]
+setheading="right"
+snake_head="right"
+
 
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x += 30#
+         elif event.type == locals.KEYDOWN:
+             if event.key == locals.K_RIGHT and setheading!="left":
+               setheading = 'right'
+               snake_head = 
+        snake_head = rightif event.key == locals.K_RIGHT and setheading!="up":
+               setheading = 'down'
+               snake_head = down
+    if setheading == "right":
+        x+=30
+    elif setheading == "left":
+       x - =30
+    elif setheading == "up":
+       y -=30
+    else:
+       y +=30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去