【Unity3D】游戲?qū)ο蟪?/h2>

對象池思路.png

• 代碼實(shí)現(xiàn)

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

public class ObjectPool
{
    #region 單例

    private static ObjectPool instance;

    public static ObjectPool GetInstance(string resPath="")
    {
        if (instance==null)
        {
            if (resPath != null)
            {
                instance = new ObjectPool(resPath);
            }
            else
            {
                instance = new ObjectPool();
            }
        }

        instance.UpdateResourcePath(resPath);    

        return instance;
    }

    /// <summary>
    /// 構(gòu)造方法
    /// </summary>
    public ObjectPool()
    {
        prefabs = new Dictionary<string, GameObject>();
        pools = new Dictionary<string, List<GameObject>>();
    }

    /// <summary>
    /// 構(gòu)造方法
    /// </summary>
    /// <param name="resPath"></param>
    public ObjectPool(string resPath)
    {
        resourcePath = resPath;
        prefabs = new Dictionary<string, GameObject>();
        pools = new Dictionary<string, List<GameObject>>();
    }

    #endregion


    #region 對象預(yù)設(shè)體資源管理

    //資源加載路徑
    private string resourcePath;
    //所有預(yù)設(shè)體
    private Dictionary<string, GameObject> prefabs;

    public GameObject GetPrefab(string prefabName)
    {
        if (prefabs.ContainsKey(prefabName))
        {
            //返回
            return prefabs[prefabName];
        }
        else
        {
            //添加新的預(yù)設(shè)體
            return LoadPrefab((prefabName));
        }
    }

    /// <summary>
    /// 加載預(yù)設(shè)體
    /// </summary>
    /// <param name="prefabName"></param>
    /// <returns></returns>
    public GameObject LoadPrefab(string prefabName)
    {
        string path = "";
        if (resourcePath!= "")
        {
            path += resourcePath;
        }
        GameObject obj = Resources.Load<GameObject>(path + prefabName);
        //異常處理
        if (obj != null)
        {
            //放到字典
            prefabs.Add(prefabName, obj);
        }
        //返回
        return obj;
    }

    /// <summary>
    /// 更新預(yù)設(shè)體加載路徑
    /// </summary>
    /// <param name="resPath"></param>
    public void UpdateResourcePath(string resPath)
    {
        resourcePath = resPath;
    }

    #endregion

    #region 對象池

    private Dictionary<string, List<GameObject>> pools;

    /// <summary>
    /// 回收對象
    /// </summary>
    /// <param name="obj"></param>
    public void RecycleObject(GameObject obj)
    {
        //非激活
        obj.SetActive(false);
        //獲取對象的名稱
        string objName = obj.name.Replace("(Clone)", "");
        //判斷有無該類對象池
        if(!pools.ContainsKey(objName))
        {
            //實(shí)例化子池
            pools.Add(objName, new List<GameObject>());
        }
        //添加到池子
        pools[objName].Add(obj);
    }

    public GameObject SpawnObject(string objName,Action<GameObject> poolEvent=null)
    {
        //輸出結(jié)果
        GameObject result = null;

        //池中有貨
        if (pools.ContainsKey(objName)&&pools[objName].Count>0)
        {
            //結(jié)果
            result = pools[objName][0];
            //移除
            pools[objName].Remove(result);
        }
        else
        {
            //拿到預(yù)設(shè)體
            GameObject prefab = GetPrefab(objName);
            if (prefab!=null)
            {
               result = GameObject.Instantiate(prefab);
            }
        }

        //激活
        result.SetActive(true);

        //執(zhí)行事件
        if (result && poolEvent != null)
        {
            poolEvent(result);
        }

        //返回結(jié)果
        return result;
    }

    #endregion
}

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

public class Bullet : MonoBehaviour
{
    void OnEnable()
    {
        StartCoroutine(AutoRecycle());
    }

    IEnumerator AutoRecycle()
    {
        yield return new WaitForSeconds(2f);

        //回收
        ObjectPool.GetInstance().RecycleObject(gameObject);
    }
}

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

public class PoolDemo : MonoBehaviour
{
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            ObjectPool.GetInstance("Prefabs/").SpawnObject("Cube", (o) =>  
            {
                o.transform.position = new Vector3
                (
                    Random.Range(-5,5f),
                    Random.Range(-5, 5f),
                    Random.Range(-5, 5f)
                );
            });
        }
    }
}

對象池效果圖.gif

最后編輯于 ：2019.07.10 17:27:38

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