save project

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -7,6 +8,8 @@ pygame.init()
 # 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）
+apple_x = 360
+apple_y = 300
 
 # 背景
 background = pygame.image.load('bg.png')
@@ -51,6 +54,11 @@ while True:
         y -= 30
     else:
         y += 30
+
+    if apple_x == x and apple_y == y:
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
+        
     position.append((x, y))
     position.pop(0)
     # 将背景图画上去
@@ -62,7 +70,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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