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()
@@ -19,9 +20,12 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
+food_x = 360
+food_y = 300
 
 setheading = "right"
 snake_head = right
+score = 0
 
 while True:
     for event in pygame.event.get():
@@ -51,8 +55,17 @@ while True:
         y -= 30
     else:
         y += 30
+
     position.append((x, y))
-    position.pop(0)
+    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
+    else:
+        position.pop(0)
+    if x < 0 or x > 630 or y <0 or y > 450:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去