/// <summary>
/// 检查是否已经从网络下载
/// </summary>
protected WWW IsLoadAssetBundleAtInternal(string assetBundleName)
{
//已经存在了呀
LOAssetBundle bundle = LOAssetCache.GetBundleCache(assetBundleName);
if (bundle != null)
{
//保留一次
bundle.Retain();
return(null);
}
//如果WWW缓存策略中包含有对应的关键字,则返回null
if (LOAssetCache.InWWWCache(assetBundleName))
{
return(null);
}
//创建下载链接
WWW www = new WWW(LOAssetManager.URI + assetBundleName);
//加入缓存策略
LOAssetCache.SetWWWCache(assetBundleName, www);
return(www);
}
public void Release()
{
this.m_ReferencedCount--;
//当引用计数为0时,卸载资源
if (this.m_ReferencedCount == 0)
{
this.m_AssetBundle.Unload(true);
LOAssetCache.FreeBundle(this.m_AssetBundleName);
}
}
/// <summary>
///
/// </summary>
/// <returns>The asset.</returns>
public T GetAsset <T>(string assetbundlename, string assetname) where T : UnityEngine.Object
{
LOAssetBundle lab = LOAssetCache.GetBundleCache(assetbundlename);
if (lab == null)
{
return(null);
}
else
{
return(lab.m_AssetBundle.LoadAsset <T>(assetname));
}
}
/// <summary>
/// 加载资源包
/// </summary>
IEnumerator LoadAssetBundle(string assetBundleName)
{
if (LOAssetCache.InCache(assetBundleName))
{
yield break;
}
// 通过网络下载AssetBundle
WWW www = IsLoadAssetBundleAtInternal(assetBundleName);
yield return(www);
// 通过网络加载失败，下载依赖包裹
yield return(StartCoroutine(LoadDependencies(assetBundleName)));
}
IEnumerator LoadManifestBundle()
{
if (LOAssetCache.InCache(LOAssetManager.ManifestName))
{
yield break;
}
// 通过网络下载AssetBundle
WWW www = IsLoadAssetBundleAtInternal(LOAssetManager.ManifestName);
yield return(www);
this.manifest = this.GetAsset <AssetBundleManifest>(LOAssetManager.ManifestName, "AssetBundleManifest");
LOAssetManager.InitBlock(this.manifest != null);
}
IEnumerator LoadDependencies(string assetBundleName)
{
if (this.manifest == null)
{
yield break;
}
// 获取依赖包裹
string[] dependencies = this.manifest.GetAllDependencies(assetBundleName);
if (dependencies.Length == 0)
{
yield break;
}
// 记录并且加载所有的依赖包裹
LOAssetCache.SetDependCache(assetBundleName, dependencies);
for (int i = 0; i < dependencies.Length; i++)
{
yield return(IsLoadAssetBundleAtInternal(dependencies[i]));
}
}
void Update()
{
LOAssetCache.Update();
}