save project

snake.py

@@ -13,15 +13,37 @@ 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=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()
+        elif event.type==locals.KEYDOWN:
+
+            if event.key ==locals.K_RIGHT and setheading != "left":
+                setheading="right"
+                snake_head=right
+
+            if event.key ==locals.K_LEFT and setheading != "right":
+                setheading="left"
+                snake_head=left
+
+            if event.key ==locals.K_UP and setheading != "down":
+                setheading="up"
+                snake_head=up
+
+            
     x += 30
     position.append((x,y))
     position.pop(0)