public void CreateBush()
{
GameObject bush = Instantiate(Resources.Load("Prefabs/bush"), new Vector3(0, 0, 0), Quaternion.identity, CreateManager.GetInstance().bushParent) as GameObject;
bush.name = "bush" + CreateManager.GetInstance().GetBushNum(); // 복제된 bush 에 번호부여
CreateManager.GetInstance().SetBushNum(1); // 1증가
}