save project

snake.py

 import pygame
 from pygame import locals
 
-# 初始化pygame，为使用pygame做准备
 pygame.init()
 
-#载入图片
+screen=pygame.display.set_mode((660,480))
+FPSCLOCK=pygame.time.Clock()
 background=pygame.image.load('bg.png')
 right=pygame.image.load('right.png')
 food=pygame.image.load('apple.png')
 body=pygame.image.load('body.png')
+down=pygame.image.load('down.png')
+up=pygame.image.load('up.png')
+left=pygame.image.load('left.png')
+snake_head=right
+
+x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
+
+setheading='right'
 
-# 创建一个窗口
-screen=pygame.display.set_mode((660,480))
 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()
+        if 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
+            if event.key==locals.K_DOWN and setheading!='up':
+                setheading='down'
+                snake_head=down
+    if setheading=='right':
+        x+=30
+    elif setheading=='left':
+        x-=30    
+    elif setheading=='up':
+        y-=30
+    else: 
+        y+=30    
+        
+
+
+    position.append((x,y))
+    position.pop(0)
 
-    #背景
     screen.blit(background,(0,0))
-    #头 朝右
-    screen.blit(right,(240,120))
-    #苹果
-    screen.blit(food,(360,360))
-    #身体
-    screen.blit(body,(210,120))
-    screen.blit(body,(180,120))
-    screen.blit(body,(180,90))
-    #刷新
-    pygame.display.update()
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+
+    screen.blit(snake_head,position[-1])
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+    screen.blit(food,(360,300))
+
+    pygame.display.update()
+    FPSCLOCK.tick(3)
+    
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