save project

snake.py

 import pygame
+import random
 from pygame import locals
-
+apple_x = 360
+apple_y = 300
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -52,7 +54,14 @@ while True:
     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 = num1*30 - 30
+        apple_y = num2*30 - 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
@@ -60,9 +69,8 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         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)