// 加载 AB
private bool LoadAB <T>(string name, AbMeta ab, AssetHandler <T> handler, ErrorHandler errorhandler, bool loadDependencies = true) where T : Object
{
if (ab == null)
{
var error = string.Format("Can't find AssetBundle \"{0}\"", name);
#if UNITY_EDITOR
RTLog.LogError(LogCat.Asset, error);
#endif
if (errorhandler != null)
{
errorhandler(error);
}
return(false);
}
if (ab.assetBundle != null)
{
if (handler != null)
{
handler(ab.assetBundle as T);
}
return(false);
}
bool load = false;
// 加载依赖包
if (loadDependencies)
{
var dependencies = mManifest.GetAllDependencies(ab.name);
if (dependencies != null)
{
for (int i = 0; i < dependencies.Length; i++)
{
var id = HashAssetID(dependencies[i]);
var dab = GlobalUtil.Binsearch(mAbs, id);
load |= LoadAB <AssetBundle>(dependencies[i], dab, null, null, false);
}
}
}
// 加载 ab
var assethandler = GetHandler(ab.Identify);
if (assethandler == null)
{
assethandler = new ABObtain(ab);
mHandlers.AddLast(assethandler);
mLoaders++;
load = true;
assethandler.DoComplete(FinishAndLoadNextAsset);
}
if (handler != null)
{
assethandler.RegistHandler(handler);
}
if (errorhandler != null)
{
assethandler.RegistErrorHandler(errorhandler);
}
return(load);
}
public ABAssetsUtil(AssetSetting set) : base()
{
mHandlers = new LinkedList <IAssetHandler>();
mAssets = new Dictionary <int, AssetMeta>(set.initCapacity);
var ab = AssetBundle.LoadFromFile(Path.Combine(set.abFolder, set.manifestName));
if (ab != null)
{
mManifest = ab.LoadAsset <AssetBundleManifest>("AssetBundleManifest");
}
if (mManifest == null)
{
RTLog.LogError(LogCat.Asset, "Lost AssetBundle Manifest File.");
mAbs = new AbMeta[0];
}
else
{
var abs = mManifest.GetAllAssetBundles();
mAbs = new AbMeta[abs == null ? 0 : abs.Length];
for (int i = 0; i < mAbs.Length; i++)
{
mAbs[i] = new AbMeta(this, abs[i], Path.Combine(set.abFolder, abs[i]));
}
GlobalUtil.Sort(mAbs, (x, y) => x.Identify <= y.Identify ? -1 : 1);
for (int i = 0; i < mAbs.Length; i++)
{
var dependencies = mManifest.GetAllDependencies(mAbs[i].name);
if (dependencies == null || dependencies.Length == 0)
{
continue;
}
for (int j = 0; j < dependencies.Length; j++)
{
var meta = GlobalUtil.Binsearch(mAbs, HashAssetID(dependencies[j]));
if (meta != null)
{
meta.AddReferenceTo(mAbs[i].Identify);
}
}
}
}
}
public ABObtain(AbMeta meta)
{
mMeta = meta;
}