/// <summary>
/// 检查内存中是否存在AssetBundle或者是否有更新
/// </summary>
/// <param name="bundleName"></param>
/// <returns></returns>
private static bool CheckLocalBundle(string bundleName)
{
if (!System.IO.File.Exists(cacheAssetPath + bundleName))
{
Log.Info("本地不存在AssetBundle： " + bundleName);
return(false);
}
BundleList.URLVersionPair serverInfo = m_ServerBundleList.SearchURL(bundleName);
BundleList.URLVersionPair localInfo = m_LocalBundleList.SearchURL(bundleName);
if (serverInfo == null || localInfo == null)
{
Log.Info("本地AssetBundle： " + bundleName + " 不存在!");
return(false);
}
if (serverInfo.hashCode != localInfo.hashCode)
{
Log.Info("本地AssetBundle： " + bundleName + " 有更新!");
return(false);
}
return(true);
}
/// <summary>
/// 保存本地的BundleList
/// </summary>
private static void SaveLocalBundleList(string bundleName)
{
BundleList.URLVersionPair serverInfo = m_ServerBundleList.SearchURL(bundleName);
BundleList.URLVersionPair localInfo = m_LocalBundleList.SearchURL(bundleName);
if (serverInfo != null)
{
if (localInfo != null)
{
m_LocalBundleList.bundles.Remove(localInfo);
}
m_LocalBundleList.bundles.Add(serverInfo);
}
SaveLocalBundleList();
}
/// <summary>
/// 下载AssetBundle
/// </summary>
/// <param name="id"></param>
/// <param name="aBundle"></param>
/// <returns></returns>
private static IEnumerator DownloadBundleComplete(int id, BundleList.URLVersionPair aBundle)
{
#if UNITY_EDITOR
if (usedAssetBundle)
{
yield break;
}
#endif
if (CheckLocalBundle(aBundle.bundleName))
{
LoadLocalBundle(aBundle.bundleName);
yield break;
}
Log.Info("开始下载AssetBundle： " + aBundle.bundleName);
m_MultiBusyDownloading[id] = true;
while (true)
{
m_MultiDownloader[id] = new WWW(bundleBaseURL + aBundle.bundleName);
yield return(m_MultiDownloader[id]);
if (m_MultiDownloader[id].error == null)
{
try
{
System.IO.File.WriteAllBytes(cacheAssetPath + aBundle.bundleName, m_MultiDownloader[id].bytes);
LoadLocalBundle(aBundle.bundleName, m_MultiDownloader[id].bytes);
SaveLocalBundleList(aBundle.bundleName);
}
catch (System.Exception e)
{
Log.Info(e.Message);
}
break;
}
else
{
Log.Error(" 下载 AssetBundle 出错 " + aBundle.bundleName);
}
}
++m_CurrentPreDownloadNum;
m_MultiBusyDownloading[id] = false;
}