save project

snake.py

 import pygame
 from pygame import locals
+from random import randint
 x,y=240,120
 pusition=[(180,90),(180,120),(210,120),(x,y)]
+apple_x=360
+apple_y=300
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 # 创建一个窗口
@@ -45,10 +48,13 @@ while True:
         y+=30                                               
     pusition.append((x,y))
     pusition.pop(0) 
+    if x==apple_x and y==apple_y:
+        apple_x=randint(0,660)
+        apple_y=randint(0,480)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,pusition[-1])
+    screen.blit(snake_head,pusition[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(pusition)-1):
         screen.blit(body,pusition[i])    
@@ -57,7 +63,7 @@ while True:
     #screen.blit(body, (180, 120))
     #screen.blit(body, (180, 90))
     # 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)