對(duì)象池的實(shí)現(xiàn)：

一、先定義個(gè)List集合用來(lái)存儲(chǔ)對(duì)象证杭，起初先在池子里放置一定數(shù)量的對(duì)象沪袭，并且把他設(shè)置為false湾宙；然后寫一個(gè)方法查找沒有激活的對(duì)象，并且返回一個(gè)激活的對(duì)象冈绊；如果池子中對(duì)象數(shù)量不夠侠鳄，重新再向池子里添加對(duì)象。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 腳本掛在到空物體上
/// </summary>
public class ObjectPool : MonoBehaviour {

        public static ObjectPool current;
        void Awake()
        {
            current = this;
        }

        //將被放入對(duì)象池中的預(yù)制體
        GameObject objectPrb;  
        //池子大小    
        public int poolCapacity = 20;
        //定義對(duì)象集合
        public List<GameObject> pool;
        //池子容量不夠時(shí)死宣，是否自動(dòng)擴(kuò)展池子
        public bool willgrow = true;

         void Start(){
             //加載預(yù)設(shè)體
             objectPrb= Resources.Load("Sphere")as GameObject;

             for(int i = 0 ; i<poolCapacity ; i++)
              {
                  GameObject obj = Instantiate(objectPrb);
                  pool.Add(obj);
                  obj.SetActive(false);
              }
     }

         public GameObject GetPooledObject(){
            for( int i = 0 ; i<pool.Count ; i++)    //遍歷對(duì)象池伟恶，將未激活的對(duì)象傳遞出去
            {
                if ( ! pool[i].activeInHierarchy )
                        return pool[i];
            }
            if  ( willgrow )  //當(dāng)池子中所有對(duì)象都激活了，但是還想激活顯示對(duì)象時(shí)毅该，擴(kuò)展池子
            {
                GameObject obj = Instantiate(objectPrb);
                pool.Add(obj);
                obj.SetActive(false);
                return obj;
            }
           return null;
     }
}

二博秫、創(chuàng)建控制腳本，調(diào)用對(duì)象池的函數(shù)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 腳本掛在到空物體上
/// </summary>
public class Control : MonoBehaviour {

    void Update () {
        if (Input.GetMouseButtonDown(0))
        {
            Fire();
        }
    }

    void Fire()
    {
        GameObject obj = ObjectPool.current.GetPooledObject();
        if (obj == null)
        {
            return;
        }
        obj.transform.position = Vector3.one;
        obj.transform.rotation = transform.rotation;
        obj.SetActive(true);
    }
}

三眶掌、預(yù)設(shè)體消失的時(shí)候只需要取消激活

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

public class Bullet : MonoBehaviour {

    void OnEnable()
    {
        Invoke("Destroy",2);
    }
    void Destroy() {
        gameObject.SetActive(false);
    }

    void OnDisable(){
        CancelInvoke();
    }

    void Update()
    {
        transform.Translate(transform.forward * 5f * Time.deltaTime);
    }
}