Unity 对象池

练习项目时候时常用到,贴在这里一下方便用到时候复制粘贴

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

public class ObjectPool
{
    static ObjectPool instance;
    public static ObjectPool Instance
    {
        get
        {
            if (instance == null) instance = new ObjectPool();
            return instance;
        }
    }
    Dictionary<string, Queue<GameObject>> pool = new Dictionary<string, Queue<GameObject>>();

    public void AddPool(GameObject g, int initCount)
    {
        pool.Add(g.name, new Queue<GameObject>());
        for (int i = 0; i < initCount; i++)
        {
            GameObject newGameObject = GameObject.Instantiate(g);
            newGameObject.name = g.name;
            pool[g.name].Enqueue(newGameObject);
        }
    }

    public GameObject GetObject(GameObject g, bool active = true)
    {
        if (!pool.ContainsKey(g.name))
        {
            pool.Add(g.name, new Queue<GameObject>());
        }
        if (pool[g.name].Count == 0)
        {
            GameObject newGameObject = GameObject.Instantiate(g);
            newGameObject.name = g.name;
            return newGameObject;
        }
        GameObject nextGameObject = pool[g.name].Dequeue();
        nextGameObject.SetActive(active);
        return nextGameObject;
    }

    public void PutObject(GameObject g)
    {
        if (!pool.ContainsKey(g.name))
        {
            pool.Add(g.name, new Queue<GameObject>());
        }
        g.SetActive(false);
        if (!pool[g.name].Contains(g)) pool[g.name].Enqueue(g);
    }
}

用时只需要调用GetObject获取对象和PutObject回收对象即可