一，把陷阱制作成预制体；

二，把角色死亡特效制作成预制体

三，有一些公共变量要拖进脚本里

四，特效要及时的销毁，给特效预制体添加脚本DeadDestroy；

五，脚本

1，LevelManager

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LevelManager : MonoBehaviour {

    public PlayerController thePlayer;

    //角色死亡特效
    public GameObject DeadExplosion;

    void Start () {

        //在游戏运行时，首先遍历一遍PlayerController脚本
        PlayerController thePlayer = FindObjectOfType<PlayerController>();

    }
    
    // Update is called once per frame
    void Update () {
        
    }

    /// <summary>
    /// 调用方法Respawn开启携程方法RespawnCo，完成等待复活事件
    /// </summary>
    public void Respawn()
    {
        //开启携程RespawnCo
        StartCoroutine("RespawnCo");
        
    }


    /// <summary>
    /// 携程，等待X秒后复活角色
    /// </summary>
    /// <returns></returns>
    public IEnumerator RespawnCo()
    {
        
        //隐藏角色
        thePlayer.gameObject.SetActive(false);
        //实例化一个角色死亡特效
        Instantiate(DeadExplosion,thePlayer.transform.position,thePlayer.transform.rotation);


        //等待X秒后执行
        yield return new WaitForSeconds(3);
        //把复活碰撞点的位置传给角色，让角色在复活碰撞点复活
        
        thePlayer.transform.position = thePlayer.RespawnPosition;
        //显示角色
        
        thePlayer.gameObject.SetActive(true);
    }

}

2，HrutController

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class HrutController : MonoBehaviour {

    //要把LevelManager拖进脚本
    public LevelManager theLevel;

    void Start () {

        theLevel = FindObjectOfType<LevelManager>();

    }
    
    // Update is called once per frame
    void Update () {
        
    }

    //角色碰到陷阱的时候调用Respawn复活角色
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag == "Player")
        {
            theLevel.Respawn();
        }
    }
}

3，DeadDestroy

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DeadDestroy : MonoBehaviour {

    // Use this for initialization
    void Start () {
        Destroy(gameObject,1.5f);
    }
    
    // Update is called once per frame
    void Update () {
        
    }
}