save project

snake.py

 import pygame
 from pygame import locals
-
+import random 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -53,9 +53,12 @@ while True:
         y += 30
     position.append((x, y))
     position.pop(0)
-    # 将背景图画上去
+    if apple_x==x and apple_y==y:
+       apple_x=random.randint(0,21)
+       apple_x=random.randint(0,15)
+       apple_x=apple_x*30
+       apple_y=apple_y*30
     screen.blit(background, (0, 0))
-    # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):