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()
 
@@ -54,10 +54,10 @@ while True:
         y += 30
     position.append((x, y))
     if x==apple_x and y==apple_y:
-        pass
+        apple_x=random.randint(0,21)*30
+        apple_y=random.randint(0,15)*30
     else:
         position.pop(0)
-    position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -67,7 +67,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
-    # 刷新画面
+    screen.blit(food, (apple_x, apple_y))
+    # 刷新画面`
     pygame.display.update()
     FPSCLOCK.tick(3)
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