新建文件夹：ResMgr。接着新建三个C#脚本。代码如下：
IResLoadListener.cs
AssetInfo.cs
ResMgr.cs
using UnityEngine;
using System.Collections; /// <summary>
/// 资源加载回调
/// </summary>
public interface IResLoadListener
{
void Finish(object asset); void Failure();
}
using System;
using UnityEngine;
using System.Collections;
using System.Collections.Generic; /// <summary>
/// 资源信息
/// </summary>
public class AssetInfo
{
/// <summary>
/// 资源
/// </summary>
public object asset; /// <summary>
/// 是否常驻内存
/// </summary>
public bool isKeepInMemory; /// <summary>
/// 资源堆栈数量
/// </summary>
public int stackCount = ;
} /// <summary>
/// 资源加载信息
/// </summary>
public class RequestInfo
{
/// <summary>
/// 资源反馈信息
/// </summary>
public ResourceRequest request; /// <summary>
/// 是否常驻内存
/// </summary>
public bool isKeepInMemory; /// <summary>
/// 加载完成之后的回调
/// </summary>
public List<IResLoadListener> linsteners; public void AddListener(IResLoadListener listener)
{
if (linsteners == null)
{
linsteners = new List<IResLoadListener>() { listener };
}
else
{
if (!linsteners.Contains(listener))
{
linsteners.Add(listener);
}
}
} /// <summary>
/// 资源名称
/// </summary>
public string assetName; public string assetFullName
{
get
{
return ResMgr.Instance.GetFileFullName(assetName);
}
} /// <summary>
/// 资源类型
/// </summary>
public Type type; /// <summary>
/// 资源是否加载完成
/// </summary>
public bool IsDone
{
get
{
return (request != null && request.isDone);
}
} /// <summary>
/// 加载到的资源
/// </summary>
public object Asset
{
get
{
return request != null ? request.asset : null;
}
} public void LoadAsync()
{
request = Resources.LoadAsync(assetFullName, type);
}
}
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System;
using System.IO; public class ResMgr : EventNode,IEventListener
{
private Dictionary<string, string> mAssetPathDic = new Dictionary<string, string>();
public string GetFileFullName(string assetName)
{
if (mAssetPathDic.Count == )
{
UnityEngine.TextAsset tex = Resources.Load<TextAsset>("res");
StringReader sr = new StringReader(tex.text);
string fileName = sr.ReadLine();
while (fileName != null)
{
Debug.Log("fileName =" + fileName);
string [] ss = fileName.Split('=');
mAssetPathDic.Add(ss[], ss[]);
fileName = sr.ReadLine();
}
}
return assetName = mAssetPathDic[assetName] + "/" + assetName;
}
/// <summary>
/// 所有资源字典
/// </summary>
private Dictionary<string, AssetInfo> mDicAaaet = new Dictionary<string, AssetInfo>(); /// <summary>
/// CPU 个数
/// </summary>
private int mProcessorCount = ; private static ResMgr mInstance;
public static ResMgr Instance
{
get
{
return mInstance;
}
} // Awake is called when the script instance is being loaded.
void Awake()
{
mInstance = this;
DontDestroyOnLoad(this.gameObject);
AttachEventListener(EventDef.ResLoadFinish, this);
mProcessorCount = SystemInfo.processorCount > && SystemInfo.processorCount <= ? SystemInfo.processorCount : ;
} void OnDestroy()
{
if (Instance != null)
{
Instance.DetachEventListener(EventDef.ResLoadFinish, this);
}
} /// <summary>
/// 正在加载的列表
/// </summary>
public List<RequestInfo> mInLoads = new List<RequestInfo>(); /// <summary>
/// 等待加载的列表
/// </summary>
public Queue<RequestInfo> mWaitting = new Queue<RequestInfo>(); /// <summary>
/// 资源加载堆栈
/// </summary>
public Stack<List<string>> mAssetStack = new Stack<List<string>>(); #region 加载资源
public void Load(string assetName, IResLoadListener listener, Type type = null, bool isKeepInMemory = false, bool isAsync = true)
{
if (mDicAaaet.ContainsKey(assetName))
{
listener.Finish(mDicAaaet[assetName]);
return;
}
if (isAsync)
{
LoadAsync(assetName, listener,isKeepInMemory,type);
}
}
#endregion #region 异步Res加载
private void LoadAsync(string assetName, IResLoadListener listener,bool isKeepInMemory,Type type)
{
for (int i = ; i < mInLoads.Count; i++)
{
if (mInLoads[i].assetName == assetName)
{
mInLoads[i].AddListener(listener);
return;
}
} foreach(RequestInfo info in mWaitting)
{
if (info.assetName == assetName)
{
info.AddListener(listener);
return;
}
} RequestInfo requestInfo = new RequestInfo();
requestInfo.assetName = assetName;
requestInfo.AddListener(listener);
requestInfo.isKeepInMemory = isKeepInMemory;
requestInfo.type = type == null ? typeof(GameObject) : type;
mWaitting.Enqueue(requestInfo);
}
#endregion #region 资源处理 /// <summary>
/// 从资源字典中取得一个资源
/// </summary>
/// <param name="assetName">资源名称</param>
/// <returns></returns>
public AssetInfo GetAsset(string assetName)
{
AssetInfo info = null;
mDicAaaet.TryGetValue(assetName,out info);
return info;
} /// <summary>
/// 释放一个资源
/// </summary>
/// <param name="assetName">资源名称</param>
public void ReleaseAsset(string assetName)
{
AssetInfo info = null;
mDicAaaet.TryGetValue(assetName, out info); if (info != null && !info.isKeepInMemory)
{
mDicAaaet.Remove(assetName);
}
} /// <summary>
/// 修改资源是否常驻内存
/// </summary>
/// <param name="assetName">资源名称</param>
/// <param name="IsKeepInMemory">是否常驻内存</param>
public void IsKeepInMemory(string assetName,bool IsKeepInMemory)
{
AssetInfo info = null;
mDicAaaet.TryGetValue(assetName, out info); if (info != null)
{
info.isKeepInMemory = IsKeepInMemory;
}
}
#endregion #region 资源释放以及监听 /// <summary>
/// 把资源压入顶层栈内
/// </summary>
/// <param name="assetName">资源名称</param>
public void AddAssetToName(string assetName)
{
if (mAssetStack.Count == )
{
mAssetStack.Push(new List<string>() { assetName });
} List <string> list = mAssetStack.Peek();
list.Add(assetName);
} /// <summary>
/// 开始让资源入栈
/// </summary>
public void PushAssetStack()
{
List<string> list = new List<string>();
foreach(KeyValuePair<string,AssetInfo> info in mDicAaaet)
{
info.Value.stackCount++;
list.Add(info.Key);
} mAssetStack.Push(list);
} /// <summary>
/// 释放栈内资源
/// </summary>
public void PopAssetStack()
{
if (mAssetStack.Count == ) return; List<string> list = mAssetStack.Pop();
List<string> removeList = new List<string>();
AssetInfo info = null;
for (int i = ; i < list.Count;i++ )
{
if (mDicAaaet.TryGetValue(list[i],out info))
{
info.stackCount--;
if (info.stackCount < && !info.isKeepInMemory)
{
removeList.Add(list[i]);
}
}
}
for (int i = ; i < removeList.Count;i++ )
{
if (mDicAaaet.ContainsKey(removeList[i]))
mDicAaaet.Remove(removeList[i]);
} GC();
} /// <summary>
/// 释放
/// </summary>
public void GC()
{
Resources.UnloadUnusedAssets();
System.GC.Collect();
} #endregion void Update()
{
if (mInLoads.Count > )
{
for (int i = mInLoads.Count - ; i >= ; i--)
{
if (mInLoads[i].IsDone)
{
RequestInfo info = mInLoads[i];
SendEvent(EventDef.ResLoadFinish, info);
mInLoads.RemoveAt(i);
}
}
} while (mInLoads.Count < mProcessorCount && mWaitting.Count > )
{
RequestInfo info = mWaitting.Dequeue();
mInLoads.Add(info);
info.LoadAsync();
}
} public bool HandleEvent(int id, object param1, object param2)
{
switch (id)
{
case EventDef.ResLoadFinish:
RequestInfo info = param1 as RequestInfo;
if (info != null)
{
if (info.Asset != null)
{
AssetInfo asset = new AssetInfo();
asset.isKeepInMemory = info.isKeepInMemory;
asset.asset = info.Asset;
if (!mDicAaaet.ContainsKey(info.assetName))
{
mDicAaaet.Add(info.assetName, asset);
} for (int i = ; i < info.linsteners.Count;i++ )
{
if (info.linsteners[i] != null)
{
info.linsteners[i].Finish(info.Asset);
}
}
AddAssetToName(info.assetName);
}
}
else
{
for (int i = ; i < info.linsteners.Count; i++)
{
if (info.linsteners[i] != null)
{
info.linsteners[i].Failure();
}
}
}
return false;
}
return false;
} public int EventPriority()
{
return ;
}
}
原文链接：http://blog.csdn.net/u013108312/article/details/52351850