save project

snake.py

 import pygame
 from pygame import locals
-
-# 初始化pygame，为使用硬件做准备
+x,y=240,120
+weizhi=[(180,90),(180,120),(210,120),(x,y)]
 pygame.init()
 CLOCK=pygame.time.Clock()
-# 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
-
-# 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-x,y=240,120
+left=pygame.image.load('left.png')
+up=pygame.image.load('up.png')
+down=pygame.image.load('down.png')
+chaoxiang = "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()
-    # 将背景图画上去
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and chaoxiang !='left':
+                chaoxiang='right'
+                snake_head=right
+            if event.key==locals.K_LEFT and chaoxiang !='right':
+                chaoxiang='left'
+                snake_head=left
+            if event.key==locals.K_UP and chaoxiang !='down':
+                chaoxiang='up'
+                snake_head=up
+            if event.key==locals.K_DOWN and chaoxiang !='up':
+                chaoxiang='down'
+                snake_head=down
+        #设置头坐标
+    if chaoxiang=='right':
+        x+=30
+    elif chaoxiang=='left':
+        x-=30
+    elif chaoxiang=='up':
+        y-=30
+    else:
+        y+=30
+    weizhi.append((x,y))
+    weizhi.pop(0)
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
-    x+=30
-    # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
-    # 将果实画上去
+    screen.blit(snake_head, (x, y))
+    for i in range(len(weizhi)-1):
+        screen.blit(body,weizhi [i])
     screen.blit(food, (360, 300))
-    # 刷新画面
     pygame.display.update()
     CLOCK.tick(3)
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