一，把陷阱制作成預制體；

二，把角色死亡特效制作成預制體

三，有一些公共變量要拖進腳本裏

四，特效要及時的銷毀，給特效預制體添加腳本DeadDestroy；

五，腳本

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 () {

        //在遊戲運行時，首先遍歷一遍PlayerController腳本
        PlayerController thePlayer = FindObjectOfType<PlayerController>();

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

    /// <summary>
    /// 調用方法Respawn開啟攜程方法RespawnCo，完成等待復活事件
    /// </summary>
 

    public void Respawn()
    {
        //開啟攜程RespawnCo
        StartCoroutine("RespawnCo");
        
    }


    /// <summary>
    /// 攜程，等待X秒後復活角色
    /// </summary>
    /// <returns></returns>
    public IEnumerator RespawnCo()
    {
        
        //隱藏角色
        thePlayer.gameObject.SetActive(false
 
);
        //實例化一個角色死亡特效
        Instantiate(DeadExplosion,thePlayer.transform.position,thePlayer.transform.rotation);


        //等待X秒後執行
        yield return new WaitForSeconds(3);
        //把復活碰撞點的位置傳給角色，讓角色在復活碰撞點復活
        
        thePlayer.transform.position = thePlayer.RespawnPosition;
        //顯示角色
        
        thePlayer.gameObject.SetActive(true);
    }

}

2，HrutController

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

public class HrutController : MonoBehaviour {

    //要把LevelManager拖進腳本
    public LevelManager theLevel;

    void Start () {

        theLevel = FindObjectOfType<LevelManager>();

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

    //角色碰到陷阱的時候調用Respawn復活角色
    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 () {
        
    }
}

Unity 2D地面陷阱和死亡特效