/// <summary>
/// 加载 AB 包（包括依赖项）
/// </summary>
/// <param name="abName"></param>
/// <returns></returns>
public IEnumerator LoadAssetBundle(string abName)
{
// AB 包关系的建立
if (_DicABRelation.ContainsKey(abName) == false)
{
ABRelation abRelationObj = new ABRelation(abName);
_DicABRelation.Add(abName, abRelationObj);
}
ABRelation tmpABRelationObj = _DicABRelation[abName];
// 得到指定AB所有的依赖关系（查询Manifest清单文件）
string[] strDependencyArray = ABManifestLoader.GetInstance().RetrivalDependency(abName);
foreach (string item_Dependency in strDependencyArray)
{
// 添加“依赖项”
tmpABRelationObj.AddDependency(item_Dependency);
// 添加引用(背以来) （方便递归调用）
yield return(LoadReference(item_Dependency, abName));
}
// 真正加载 AB 包
if (_DicSingleABLoaderCache.ContainsKey(abName) == true)
{
yield return(_DicSingleABLoaderCache[abName].LoadAssetBundle());
}
else
{
_CurrentSingleABLoader = new SingleABLoader(abName, CompleteLoadAB);
_DicSingleABLoaderCache.Add(abName, _CurrentSingleABLoader);
yield return(_CurrentSingleABLoader.LoadAssetBundle());
}
}
/// <summary>
/// 加载应用 AB 包
/// </summary>
/// <param name="abName">AB 包名称</param>
/// <param name="refABName">被引用AB包名称</param>
/// <returns></returns>
private IEnumerator LoadReference(string abName, string refABName)
{
// AB 包已经加载了
if (_DicABRelation.ContainsKey(abName))
{
ABRelation tmpABRelationObj = _DicABRelation[abName];
// 添加AB包引用关系（被依赖关系）
tmpABRelationObj.AddReference(refABName);
}
else
{
ABRelation tmpABRelationObj = new ABRelation(abName);
tmpABRelationObj.AddReference(refABName);
_DicABRelation.Add(abName, tmpABRelationObj);
// 开始加载依赖的包（一个递归调用）
yield return(LoadAssetBundle(abName));
}
}