auto save

snake.py

 import pygame
 from pygame import locals
 
+x = 240
+y = 120
+position = [(180,90),(180,120),(210,120),(x,y)]  
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 # 创建一个窗口
@@ -10,9 +13,8 @@ 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 = 240
-y = 120
-FPSCLOCK = pygame.time.Clock()
+
+FPSCLOCK=pygame.time.Clock()
 
 while True:
     for event in pygame.event.get():
@@ -20,14 +22,15 @@ while True:
             # 接收到退出事件后退出程序
             exit()
     x += 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(right, position[-1])
     # 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))
+    for i in range(3):
+        screen.blit(body, position[i])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面