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()
 
@@ -17,6 +17,8 @@ up = pygame.image.load('up.png')
 down = pygame.image.load('down.png')
 x, y = 240, 120
 position = [(180,90),(180,120),(210,120),(x,y)]
+apple_x=360
+apple_y=360
 setheading = "right"
 snake_head = right
 while True:
@@ -46,8 +48,12 @@ while True:
         y -=30
     else:
         y +=30
-
-    
+    position.append((x,y))
+    if x ==apple_x and y ==apple_y:
+        num1= random.randint(1, 22)
+        num2 = random.randint(1, 16)
+        apple_x = 30*num1-30
+        apple_y = 30*num2-30
     position.append((x,y))
     position.pop(0)  
     # 将背景图画上去