死亡动画播放后，下次射击之前消失

MonsterManager

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

public class MonsterManager : MonoBehaviour
{
    //3.定义动画
    private Animation anim;
    //5.定义两个动画状态
    public AnimationClip idleClip;
    public AnimationClip dieClip;
    private void Awake()
    {
        //4.获得动画组件
        anim = gameObject.GetComponent<Animation>();
        //6.赋值动画
        anim.clip = idleClip;

    }

    //1.检测是否被子弹打中
    private void OnCollisionEnter(Collision collision)
    {
        if(collision.collider.tag == "Bullet")
        {
            //2.销毁子弹
            Destroy(collision.collider.gameObject);
            //7.切换动画
            anim.clip = dieClip;
            anim.Play();

            //10.关闭组件
            gameObject.GetComponent<BoxCollider>().enabled = false;
            StartCoroutine("Deactivate");
        }
    }
    //8.当怪物disable的时候，将默认的动画修改为idle动画
    private void OnDisable()
    {
        anim.clip = idleClip;
    }

    //9.迭代器
    IEnumerator Deactivate()
    {
        //两次射击间隔为1s 所以这里时间小于1s
        yield return new WaitForSeconds(0.8f);
        //使当前的怪物变为未激活状态，并使整个循环重新开始。TargetManager.cs
        TargetManager._instance.UpdateMonsters();
    }
}

TargetManager

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

public class TargetManager : MonoBehaviour
{
    //16.方便其他文件调用
    public static TargetManager _instance;
    //1.获取我们设置的四种怪物：控制怪物的生成或销毁（显示或隐藏） 最开始是都不显示
    //2.建立数组
    public GameObject[] monsters;
    //6.获得激活状态的怪物
    public GameObject activeMonster = null;

    //17.赋值
    private void Awake()
    {
        _instance = this;
    }

    //9.调用测试
    private void Start()
    {
        //10.遍历初始化目标怪的状态以及boxcollider状态
        foreach (GameObject monster in monsters)
        {
            monster.GetComponent<BoxCollider>().enabled = false;
            monster.SetActive(false);
        }
        //ActiveMonster();
        //12.调用迭代器方法：先注释上一句的直接调用
        StartCoroutine("AliveTimer");

    }

    //3.是否激活各种状态函数
    private void ActiveMonster()
    {
        //4.随机激活：得到index
        int index = Random.Range(0, monsters.Length);

        //5.激活怪物：需要先获得激活状态的怪物
        //赋值
        activeMonster = monsters[index];
        //7.激活
        activeMonster.SetActive(true);
        //8.激活box collider
        activeMonster.GetComponent<BoxCollider>().enabled = true;
        //14.调用
        StartCoroutine("DeathTimer");
    }
    //11.协程控制迭代器 设置怪物生成的等待时间
    IEnumerator AliveTimer()
    {
        yield return new WaitForSeconds(Random.Range(1, 5));
        ActiveMonster();

    }

    //14.控制死亡迭代器 使激活状态的怪变为未激活状态
    private void DeActiveMonster()
    {
        if (activeMonster != null)
        {

            activeMonster.GetComponent<BoxCollider>().enabled = false;
            activeMonster.SetActive(false);
            activeMonster = null;
        }
        //14.再次激活
        StartCoroutine("AliveTimer");
    }
    //设置死亡时间
    IEnumerator DeathTimer()
    {
        yield return new WaitForSeconds(Random.Range(3, 8));
        DeActiveMonster();
    }

    //15.更新怪物 在其他脚本中调用此方法
    public void UpdateMonsters()
    {
        if (activeMonster != null)
        {
            //关闭所有协程
            StopAllCoroutines();
            activeMonster.SetActive(false);
            activeMonster = null;
            StartCoroutine("AliveTimer");
        }
    }
}