save project

my_game.py

 import pygame
 from pygame import locals
-import random
+from random import*
 
 pygame.init()  # 初始化
 # 创建一个窗口
@@ -67,6 +67,13 @@ while True:
     if lu_x <-1000:
         lu_x=0
 
+    xz.x -= 8
+    if xz.x < 0-xz.width:
+        xz = zg.get_rect()
+        zg = choice([bush,cacti,stone])
+        xz.x = 1000
+        xz.x = 500 - xz.height
+
    
     # 刷新画面
     pygame.display.update()