save project

my_game.py

@@ -64,7 +64,7 @@ while True:
         if index >= 5:
             index = 0
     # 将背景图画上去
-    shan_x -=2
+    shan_x -=1
     if shan_x <-1000:
         shan_x=0
     screen.blit(background, (shan_x, 0))     # 远处背景
@@ -76,7 +76,10 @@ 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)
+        obstacle = random.choice([bush,stone,cacti])
+        rect = obstacle.get_rect()
+        rect.x = 1000
+        rect.y = 500 - rect.height
     aa.rect.x -= 8