save project

snake.py

@@ -15,11 +15,21 @@ food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
 x, y =240,120
 x, y =240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 position = [(180,90),(180,120),(210,120),(x,y)]
+setheading = "right"
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
+        if event.type == locals.KEYDOWN: 
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading = 'right'
+            if event.key == locals.K_LEFT and setheading != "right": 
+                setheading = 'left'   
+            if event.key == locals.K_UP and setheading != "down": 
+                setheading = 'up'   
+            if event.key == locals.K_DOWN and setheading != "up": 
+                setheading = 'down'       
     x +=30
     x +=30
     position.append((x,y))# 将背景图画上去
     position.append((x,y))# 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))