save project

my_game.py

@@ -75,8 +75,14 @@ while True:
     screen.blit(road, (lu_x, 500))     # 路
     screen.blit(wukong, (150, y))     # 悟空
 
-    aa=Block(bush,cacti,stone)
-    zaw.add(aa)
+    time +=1
+    if time>60:
+        time = 0
+        num = random.randint(0,50)
+        if num>20:
+            aa=Block(bush,cacti,stone)
+            zaw.add(aa)
+            
     for jingling in zaw:
         jingling.rect.x -=8
         screen.blit(jingling.image, (jingling.rect.x, jingling.rect.y))