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()
@@ -20,6 +21,8 @@ down = pygame.image.load('down.png')
 
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
+apple_x = 360
+apple_y = 300
 
 setheading = "right"
 snake_head = right
@@ -53,6 +56,11 @@ while True:
         y += 30
 
     position.append((x,y))
+
+    if x == apple_x and y == apple_y:
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
+
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))