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

public class ResourLoadMananger : MonoBehaviour {

    private static ResourLoadMananger instance;
    public static ResourLoadMananger GetInstance()
    {
        if(instance==null)
        {
            instance = new GameObject("ResourLoadMananger").AddComponent<ResourLoadMananger>();
        }
        return instance;
    }
    private Hashtable ht = null;
    void Awake()
    {
        ht = new Hashtable();
    }
    /// <summary>
    /// 调用资源（带对象缓冲技术）
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="path"></param>
    /// <param name="isCatch"></param>
    /// <returns></returns>
    public T LoadResource<T>(string path, bool isCatch) where T : UnityEngine.Object
    {
        if (ht.Contains(path))
        {
            return ht[path] as T;
        }
        T TResource = Resources.Load<T>(path);
        if (TResource == null)
        {
            Debug.LogError(GetType() + "/GetInstance()/TResource 提取的资源找不到，请检查。 path=" + path);
        }
        else if (isCatch)
        {
            ht.Add(path, TResource);
        }
        return TResource;
    }
    /// <summary>
    /// 调用资源
    /// </summary>
    /// <param name="path"></param>
    /// <param name="isCatch"></param>
    /// <returns></returns>
    public GameObject LoadAsset(string path, bool isCatch)
    {
        GameObject goObj = LoadResource<GameObject>(path, isCatch);
        GameObject goObjClone = GameObject.Instantiate<GameObject>(goObj);
        if (goObjClone == null)
        {
            Debug.LogError(GetType() + "/LoadAsset()/克隆资源不成功，请检查。 path=" + path);
        }
        //goObj = null;//??????????
        return goObjClone;
    }
}