auto save

snake.py

@@ -13,6 +13,13 @@ 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 = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+
+setheading="right"
+snake_head=right
+
 x,y = 240,120 
 psition = [(180, 90), (180, 120) ,(210, 120) ,(x, y)]
 while True:
@@ -20,7 +27,31 @@ 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":
+                setheading = 'right'
+                snake_head = right
+            if event.key == locals.k_RIGHT and setheading != "right":
+                setheading = 'left'
+                snake_head = left
+            if event.key == locals.k_RIGHT and setheading != "up":
+                setheading = 'down'
+                snake_head = down
+            if event.key == locals.k_RIGHT and setheading != "down":
+                setheading = 'up'
+                snake_head = up
+   
+       
+    if setheading == "right":
         x += 30
+    elif setheading == "left":
+          x -= 30   
+         setheading == "down":
+          y += 30   
+    else:
+         setheading == "up":
+          y -= 30   
+
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去