save project

snake.py

 import pygame
 from pygame import locals
+import random as r
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -22,6 +23,9 @@ position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 setheading = "right"
 snake_head = right
+apple_x=30*3-30
+apple_y=30*3-30
+
 
 while True:
     for event in pygame.event.get():
@@ -52,6 +56,11 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    if x == apple_x and y== apple_y:
+        n1=r.randint(1,22)
+        n2 =r.randint(1,16)
+        apple_x= n1*30 - 30
+        apple_y= n2*30 - 30
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -62,7 +71,7 @@ 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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