private void LoadAsset(string prefabName, Type type, ILoadListent callBack, bool isKeepInMemory)
{
if (string.IsNullOrEmpty(prefabName))
{
if (callBack != null) callBack.Failed();
return;
}
//如果缓存中包含此资源包则直接返回
if (mAssetPacksDic.ContainsKey(prefabName))
{
if (mAssetPacksDic[prefabName].asset == null)
{
if (callBack != null)
{
callBack.Failed();
}
}
else
{
callBack.Succeed(mAssetPacksDic[prefabName].asset);
}
return; //如果找到就不在往下执行
}
//如果不包含，则先判断当前正在加载的列表中是否包含，如果包含则直接把回调事件加入
for (int i = 0; i < mLoadList.Count; i++)
{
ResLoadRequest request = mLoadList[i];
if (!request.assetName.Equals(prefabName)) continue;
request.AddListent(callBack);
return;
}
foreach (ResLoadRequest request in mWaitLoads)
{
if (!request.assetName.Equals(prefabName)) continue;
request.AddListent(callBack);
return;
}
//如果都不存在的话，则加载进等待队列
ResLoadRequest loadRequest = new ResLoadRequest(prefabName, isKeepInMemory, type);
loadRequest.listents.Add(callBack);
mWaitLoads.Enqueue(loadRequest);
}
/// <summary>
/// 从Resource加载一个资源
/// </summary>
/// <param name="prefabName">资源名称</param>
/// <param name="type">类型</param>
/// <param name="callBack">加载完成后的回调</param>
/// <param name="isKeepInMemory">是否常驻内存</param>
public void LoadAssetAsync(string prefabName, Type type, ILoadListent callBack, bool isKeepInMemory = false)
{
LoadAsset(prefabName, type, callBack, isKeepInMemory);
}
/// <summary>
/// 添加一个回调到回调列表
/// </summary>
/// <param name="listent"></param>
public void AddListent(ILoadListent listent)
{
if (listents == null || listents.Contains(listent)) return;
listents.Add(listent);
}