save project

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -22,7 +23,8 @@ position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 setheading = "right"
 snake_head = right
-
+apple_x=360
+apple_y=300
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -52,7 +54,13 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
+    if x==apple_x and y==apple_y:
+        apple_x=random.randint(0,21)
+        apple_y=random.randint(0,15)
+        apple_x=apple_x*30
+        apple_y=apple_y*30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +70,7 @@ 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)
\ No newline at end of file
+    FPSCLOCK.tick(5)
\ No newline at end of file