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()
-
+a_x=360
+a_y=300
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
@@ -54,6 +55,9 @@ while True:
     position.append((x, y))
     position.pop(0)
     # 将背景图画上去
+    if  a_x ==x and a_y ==y:
+       a_x=random.randint(0,660)
+       a_y=random.randint(0,480) 
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
@@ -62,7 +66,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (a_x, a_y))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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