/// <summary>
/// 单个 AB加载完成的回调
/// 保存AB到BundleNode
/// </summary>
/// <param name="operation"></param>
protected override void OnAsyncOperationLoaded(AAssetAsyncOperation operation)
{
BundleNode bundleNode = m_BundleNodeDic[operation.AssetPath];
bundleNode.SetAssetBundle((operation.GetAsset() as AssetBundle));
m_LoadingAsyncOperationDic.Remove(operation.AssetPath);
}
/// <summary>
/// 元素回收时被调用
/// </summary>
public void OnRelease()
{
m_AssetPath = null;
m_BundleNode.ReleaseRefCount();
m_BundleNode = null;
m_WeakAssets.Clear();
m_LoadCount = 0;
}
/// <summary>
/// 内部卸载无用资源函数
/// 根据资源的记数查找可以释放的资源
/// </summary>
protected override void InnerUnloadUnusedAssets()
{
string[] assetNodeKeys = (from nodeKVP in m_AssetNodeDic where !nodeKVP.Value.IsAlive() select nodeKVP.Key).ToArray();
foreach (var key in assetNodeKeys)
{
AssetNode assetNode = m_AssetNodeDic[key];
m_AssetNodeDic.Remove(key);
m_AssetNodePool.Release(assetNode);
}
string[] bundleNodeKeys = (from nodeKVP in m_BundleNodeDic where nodeKVP.Value.RefCount == 0 select nodeKVP.Key).ToArray();
foreach (var key in bundleNodeKeys)
{
BundleNode bundleNode = m_BundleNodeDic[key];
m_BundleNodeDic.Remove(key);
m_BundleNodePool.Release(bundleNode);
}
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="path">资源路径</param>
/// <param name="node">主BundleNode</param>
public void InitNode(string path, BundleNode node)
{
m_AssetPath = path;
m_BundleNode = node;
m_BundleNode.RetainRefCount(); //BundleNode 引用数量+1
}
/// <summary>
/// 保存它的依赖 BundleNode
/// </summary>
/// <param name="node"></param>
public void AddDependNode(BundleNode node)
{
m_DirectDependNodes.Add(node);
node.RetainRefCount();
}