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()
 
@@ -19,7 +19,8 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
+apple_x=360
+apple_y=300
 setheading = "right"
 snake_head = right
 
@@ -52,7 +53,15 @@ while True:
     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
@@ -65,4 +74,35 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)
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