auto save

snake.py

@@ -15,19 +15,46 @@ 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')
+sethending = "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
+        if event.tpye == locals.KEYDOWN:
+            if event.key ==locals.K_RIGHT and sethending !="left":
+                sethending = "right"
+                snake_head = right
+            if event.key ==locals.K_LEFT and sethending !="right":
+                sethending = 'left'
+                snake_head = left
+            if event.key ==locals.K_UP and sethending !="down":
+                sethending = 'up'
+                snake_head = up
+            if event.key ==locals.K_DOWN and sethending !="up":
+                sethending = 'down'
+                snake_head = down
+
+    if sethending =="right":
+        x+=30
+    elif sethending =="left":
+        x-=30
+    elif sethending =="up":
+        y-=30
+    else:
+        y+=30
+    
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, (x, y))
     # 将贪吃蛇的身体画上去
     # screen.blit(body, (210, 120))
     # screen.blit(body, (180, 120))