auto save

snake.py

 import pygame
 from pygame import locals
+import random
 FK = pygame.time.Clock()
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -17,6 +18,7 @@ up = pygame.image.load('up.png')
 down = pygame.image.load('down.png')
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
+
 setheading = 'right'
 snake_head = right
 
@@ -47,6 +49,9 @@ while True:
     else:
         y += 30
     position.append((x,y))
+    if x == food_x and y == food_y:
+        food_x=random.randint(0,660)
+        food_y=random.randint(0,480)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -56,7 +61,7 @@ while True:
     for i in range(len(position)-1):
         screen.blit(body,position[i])
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (food_x,food_y))
     # 刷新画面
     pygame.display.update()
     FK.tick(3)