save project

my_game.py

@@ -76,9 +76,12 @@ while True:
 
     if aa.rect.x <= 0-aa.rect.width:      # 障碍物消失
         # 创建障碍物对象
-        aa=Block(bush,cacti,stone)
-    aa.rect.x -= 8
-
+        aa=random.choice([bush,cacti,stone])
+        rect = aa.get_rect()
+        rect.x = 1000
+        rect.y = 500 - rect.height
+    rect.x -= 8
+    screen.blit(aa,( rect.x,rect.y))
  
     screen.blit(aa.image, (aa.rect.x, aa.rect.y)) 
     # 刷新画面