unity3D射线检测敌人是否在前方

  //发射一条射线,去检测玩家是否在自己面前,用来随后的发射炮弹
            bool isForward = false;
            var TranformShootPoint = ai.WorkingMemory.GetItem<GameObject>("enemyShootPoint");
            Ray ray = new Ray(TranformShootPoint.transform.position, TranformShootPoint.transform.forward);
            RaycastHit hit;//这个是碰撞检测的目标
            if (Physics.Raycast(ray, out hit, 5))//传入的参数依次是：射线、射线碰撞物、射线检测距离
            {
                GameObject obj = hit.transform.gameObject;//得到碰撞的游戏对象
                if (obj.tag == "Player")
                {
                    isForward = true;
                }
               
            }