auto save

snake.py

@@ -16,20 +16,23 @@ body = pygame.image.load('body.png')
 FPS = pygame.time.Clock()
 x=240
 y=120
+pos = [(180, 90),(180, 120),(210, 120),(x,y)]
 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()
     x +=30
+    pos.append((x,y))
+    pos.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, pos[-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))
+    screen.blit(body, pos[-2])
+    screen.blit(body, pos[-3])
+    screen.blit(body, pos[-4])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面