/// <summary>
/// 加载依赖的AB包
/// </summary>
private IEnumerator LoadDependence(string abName, string refName)
{
ABRelation tempRelation;
if (_abRelationDict.ContainsKey(abName))
{
//要依赖的包的对应关系类存在，直接给它添加引用关系
tempRelation = _abRelationDict[abName];
tempRelation.AddReference(refName);
}
else
{
//没有就创建关系类
tempRelation = new ABRelation(abName);
//为要依赖的包添加引用关系
tempRelation.AddReference(refName);
//放入字典
_abRelationDict.Add(abName, tempRelation);
//加载依赖的包(递归)
yield return(LoadAssetBundle(abName));
}
}
/// <summary>
/// 加载AB包
/// </summary>
public IEnumerator LoadAssetBundle(string abName)
{
//判断AB包关系类是否已存在
if (!_abRelationDict.ContainsKey(abName))
{
//创建和AB包名对应的AB包关系类加入字典
ABRelation relation = new ABRelation(abName);
_abRelationDict.Add(abName, relation);
}
//获取对应的关系类
ABRelation tempRelation = _abRelationDict[abName];
//得到指定AB包的所有依赖关系（查询清单文件）
string[] dependenceArray = FrameworkEntry.ABManifestLoader.RetrivalDependece(abName);
foreach (string itemDependence in dependenceArray)
{
//添加依赖项
tempRelation.AddDependence(itemDependence);
//加载它依赖的包
yield return(LoadDependence(itemDependence, abName));
}
//是否已经加载过
if (_singleABDict.ContainsKey(abName))
{
yield return(_singleABDict[abName].LoadAssetBundle());
}
else
{
//未加载过，创建对应的单包加载类对象
_curSingleAB = new SingleABLoader_2(_curFirstDirName, abName, CompleteLoadAB);
_singleABDict.Add(abName, _curSingleAB);
yield return(_curSingleAB.LoadAssetBundle());
}
}