protected override void DoBundleLoadHandler(string _BundleKey, AssetBundles.LoadedAssetBundle _Bundle, string [] pathArray)
{
Debug.Log("DoBundleLoadHandler() " + _BundleKey);
if (true == m_Checks.ContainsKey(_BundleKey))
{
m_Checks[_BundleKey].m_CurrentState = CheckState.CheckComplete;
}
this.State = ProgressState.Checking;
}
protected virtual IEnumerator LoadAssetFromExistBundle_Delegate(AssetBundles.LoadedAssetBundle _LoadedBundle
, string _AssetName)
{
var request = _LoadedBundle.m_AssetBundle.LoadAssetAsync <UnityEngine.Object>(_AssetName);
yield return(request);
// Get the asset.
var assetObject = request.asset;
assetLoadHandler(assetObject);
}
protected virtual IEnumerator LoadAssetFromExistBundle_Callback(AssetBundles.LoadedAssetBundle _LoadedBundle
, string assetName
, System.Action <UnityEngine.Object> _CallbackFunc)
{
// Load asset from assetBundle.
var request = _LoadedBundle.m_AssetBundle.LoadAssetAsync <UnityEngine.Object>(assetName);
yield return(request);
// Get the asset.
var assetObject = request.asset;
_CallbackFunc(assetObject);
}
protected override void DoBundleLoadHandler(string _BundleKey, AssetBundles.LoadedAssetBundle _Bundle, string [] pathArray)
{
if (null == _Bundle)
{
#if UNITY_EDITOR
if (!AssetBundles.AssetBundleManager.SimulateAssetBundleInEditor)
{
Debug.LogError("DoBundleLoadHandler() Fatal Error, Bundle missed");
}
#else
Debug.LogError("DoBundleLoadHandler() Fatal Error, Bundle missed");
#endif
}
Debug.Log("DoBundleLoadHandler=" + _BundleKey);
if (true == m_Checks.ContainsKey(_BundleKey))
{
m_Checks[_BundleKey].m_CurrentState = CheckState.CheckComplete;
}
// check unload
ABSetupInfo setupData = null;
m_BundleInfos.TryGetValue(_BundleKey, out setupData);
if (null == setupData)
{
Debug.Log("DoBundleLoadHandler() null == setting _Bundle.m_BundleKey=" + _BundleKey);
}
else
{
if (setupData.ReleaseTiming == ABReleaseTiming.LoadByDemand.ToString() ||
setupData.ReleaseTiming == ABReleaseTiming.KeepUnload.ToString()
)
{
Debug.Log("DoBundleLoadHandler() UnloadAssetBundle=" + _BundleKey);
AssetBundles.AssetBundleManager.UnloadAssetBundle(_BundleKey);
}
}
this.State = ProgressState.Checking;
}
protected override void FinishDownload()
{
AssetBundle bundle = m_Operation.assetBundle;
if (bundle == null)
{
error = string.Format("failed to load assetBundle {0}.", assetBundleName);
return;
}
if (bundle == null)
{
error = string.Format("{0} is not a valid asset bundle.", assetBundleName);
}
else
{
assetBundle = new LoadedAssetBundle(bundle);
}
m_Operation = null;
}
public override bool Update()
{
if (m_Request != null)
{
return(false);
}
LoadedAssetBundle bundle = AssetBundleManager.GetLoadedAssetBundle(m_AssetBundleName, out m_DownloadingError);
if (bundle != null)
{
m_Request = SceneManager.LoadSceneAsync(m_LevelName, m_IsAdditive ? LoadSceneMode.Additive : LoadSceneMode.Single);
return(false);
}
else
{
return(true);
}
}
// Returns true if more Update calls are required.
public override bool Update()
{
if (m_Request != null)
{
return(false);
}
LoadedAssetBundle bundle = AssetBundleManager.GetLoadedAssetBundle(m_AssetBundleName, out m_DownloadingError);
if (bundle != null)
{
///@TODO: When asset bundle download fails this throws an exception...
m_Request = bundle.m_AssetBundle.LoadAssetAsync(m_AssetName, m_Type);
return(false);
}
else
{
return(true);
}
}
/// <summary>
/// Retrieves an asset bundle that has previously been requested via LoadAssetBundle.
/// Returns null if the asset bundle or one of its dependencies have not been downloaded yet.
/// </summary>
static public LoadedAssetBundle GetLoadedAssetBundle(string assetBundleName, out string error)
{
if (m_DownloadingErrors.TryGetValue(assetBundleName, out error))
{
return(null);
}
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle == null)
{
return(null);
}
// No dependencies are recorded, only the bundle itself is required.
string[] dependencies = null;
if (!m_Dependencies.TryGetValue(assetBundleName, out dependencies))
{
return(bundle);
}
// Make sure all dependencies are loaded
foreach (var dependency in dependencies)
{
if (m_DownloadingErrors.TryGetValue(dependency, out error))
{
return(null);
}
// Wait all the dependent assetBundles being loaded.
LoadedAssetBundle dependentBundle;
m_LoadedAssetBundles.TryGetValue(dependency, out dependentBundle);
if (dependentBundle == null)
{
return(null);
}
}
return(bundle);
}
static protected void UnloadAssetBundleInternal(string assetBundleName)
{
string error;
LoadedAssetBundle bundle = GetLoadedAssetBundle(assetBundleName, out error);
if (bundle == null)
{
return;
}
if (--bundle.m_ReferencedCount == 0)
{
bundle.m_AssetBundle.Unload(true);
m_LoadedAssetBundles.Remove(assetBundleName);
if (Debug.developerConsoleVisible)
{
Log(LogType.Info, assetBundleName + " has been unloaded successfully");
}
}
}
// Returns true if more Update calls are required.
public override bool Update(UrlAssetBundleLoadCtrl loadCtrl)
{
if (m_Request != null)
{
return(false);
}
LoadedAssetBundle bundle = loadCtrl.GetLoadedAssetBundle(m_AssetBundleName, out m_DownloadingError);
if (bundle != null)
{
///@TODO: When asset bundle download fails this throws an exception...
m_Request = bundle.m_AssetBundle.LoadAllAssetsAsync(m_Type);
return(false);
}
else
{
progress = loadCtrl.GetProgress(m_AssetBundleName);
return(true);
}
}
protected override void FinishDownload()
{
error = m_WebRequest.error;
if (!string.IsNullOrEmpty(error))
{
return;
}
AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(m_WebRequest);
if (bundle == null)
{
error = string.Format("{0} is not a valid asset bundle.", assetBundleName);
}
else
{
assetBundle = new LoadedAssetBundle(bundle);
}
m_WebRequest.Dispose();
m_WebRequest = null;
}
protected override void FinishDownload()
{
error = m_WWW.error;
if (!string.IsNullOrEmpty(error))
{
return;
}
AssetBundle bundle = m_WWW.assetBundle;
if (bundle == null)
{
error = string.Format("{0} is not a valid asset bundle.", assetBundleName);
}
else
{
assetBundle = new LoadedAssetBundle(m_WWW.assetBundle);
}
m_WWW.Dispose();
m_WWW = null;
}
public override bool Update()
{
if (this.m_Request != null)
{
return(false);
}
LoadedAssetBundle loadedAssetBundle = AssetBundleManager.GetLoadedAssetBundle(this.m_AssetBundleName, out this.m_DownloadingError);
if (loadedAssetBundle != null)
{
if (this.m_IsAdditive)
{
this.m_Request = Application.LoadLevelAdditiveAsync(this.m_LevelName);
}
else
{
this.m_Request = Application.LoadLevelAsync(this.m_LevelName);
}
return(false);
}
return(true);
}
// Where we actuall call WWW to download the assetBundle.
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
// Already loaded.
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
if (m_DownloadingWWWs.ContainsKey(assetBundleName))
{
return(true);
}
WWW download = null;
string url = m_BaseDownloadingURL + assetBundleName;
//Debug.Log ("Downloading " + assetBundleName + ", isLoadingAssetBundleManifest: " + isLoadingAssetBundleManifest);
// For manifest assetbundle, always download it as we don't have hash for it.
if (isLoadingAssetBundleManifest)
{
download = new WWW(url);
}
else
{
download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
// Debug.LogError("Add download file from Url: " + url);
m_DownloadingWWWs.Add(assetBundleName, download);
return(false);
}
// Returns true if more Update calls are required.
public override bool Update()
{
if (m_Request != null)
{
return(false);
}
LoadedAssetBundle bundle = AssetBundleManager.GetLoadedAssetBundle(m_AssetBundleName, out m_DownloadingError);
if (bundle != null)
{
///@TODO: When asset bundle download fails this throws an exception...
m_Request = bundle.m_AssetBundle.LoadAssetAsync(m_AssetName, m_Type);
// 默认为true，表示一旦场景加载完毕即刻切换场景，设置为false后不自动切换场景，在需要切换场景时，设置m_Request.allowSceneActivation = true;
// m_Request.allowSceneActivation = false;
// m_Request.progress 为下载进度
return(false);
}
else
{
return(true);
}
}
// Where we actuall call WWW to download the assetBundle.
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
// Already loaded.
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
if (m_DownloadingWWWs.ContainsKey(assetBundleName))
{
return(true);
}
UnityWebRequest download = null;
string url = m_BaseDownloadingURL + assetBundleName;
if (isLoadingAssetBundleManifest)
{
download = UnityWebRequestAssetBundle.GetAssetBundle(url);// new UnityWebRequest(url);
}
//else
// download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
if (download != null)
{
m_DownloadingWWWs.Add(assetBundleName, download);
}
return(false);
}
protected override void FinishDownload()
{
error = m_request.error;
if (!string.IsNullOrEmpty(error))
{
return;
}
var handler = m_request.downloadHandler as DownloadHandlerAssetBundle;
AssetBundle bundle = handler.assetBundle;
if (bundle == null)
{
error = string.Format("{0} is not a valid asset bundle.", assetBundleName);
}
else
{
assetBundle = new LoadedAssetBundle(bundle);
}
m_request.Dispose();
m_request = null;
m_Operation = null;
}
public bool LoadAssetBundleInternal(string assetBundleName, System.Action _completeDownloadCallBack)
{
// Already loaded.
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
LoadingAssetBundle _loadingBundle = null;
m_LoadingAssetBundles.TryGetValue(assetBundleName, out _loadingBundle);
if (_loadingBundle != null)
{
if (_completeDownloadCallBack != null)
{
_loadingBundle.m_Action_Complete_Download += _completeDownloadCallBack;
}
return(true);
}
_loadingBundle = new LoadingAssetBundle(assetBundleName);
if (_completeDownloadCallBack != null)
{
_loadingBundle.m_Action_Complete_Download += _completeDownloadCallBack;
}
m_LoadingAssetBundles.Add(assetBundleName, _loadingBundle);
string url = m_BaseDownloadingURL + assetBundleName;
_loadingBundle.m_DownloadingWWW = WWW.LoadFromCacheOrDownload(url, 1);
return(false);
}
// Sets up download operation for the given asset bundle if it's not downloaded already.
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
// Already loaded.
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
if (m_DownloadingBundles.Contains(assetBundleName))
{
return(true);
}
string bundleBaseDownloadingURL = GetAssetBundleBaseDownloadingURL(assetBundleName);
if (bundleBaseDownloadingURL.ToLower().StartsWith("odr://"))
{
#if ENABLE_IOS_ON_DEMAND_RESOURCES
Log(LogType.Info, "Requesting bundle " + assetBundleName + " through ODR");
m_InProgressOperations.Add(new AssetBundleDownloadFromODROperation(assetBundleName));
#else
new ApplicationException("Can't load bundle " + assetBundleName + " through ODR: this Unity version or build target doesn't support it.");
#endif
}
else if (bundleBaseDownloadingURL.ToLower().StartsWith("res://"))
{
#if ENABLE_IOS_APP_SLICING
Log(LogType.Info, "Requesting bundle " + assetBundleName + " through asset catalog");
m_InProgressOperations.Add(new AssetBundleOpenFromAssetCatalogOperation(assetBundleName));
#else
new ApplicationException("Can't load bundle " + assetBundleName + " through asset catalog: this Unity version or build target doesn't support it.");
#endif
}
else
{
WWW download = null;
if (!bundleBaseDownloadingURL.EndsWith("/"))
{
bundleBaseDownloadingURL += "/";
}
string url = bundleBaseDownloadingURL + assetBundleName;
// For manifest assetbundle, always download it as we don't have hash for it.
if (isLoadingAssetBundleManifest)
{
download = new WWW(url);
}
else
{
download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
m_InProgressOperations.Add(new AssetBundleDownloadFromWebOperation(assetBundleName, download));
}
m_DownloadingBundles.Add(assetBundleName);
return(false);
}
protected virtual void DoBundleLoadHandler(string _BundleKey, AssetBundles.LoadedAssetBundle _Bundle, string [] pathArray)
{
// UnityEngine.Debug.Log("DoBundleLoadHandler() _BundleKey=" + _BundleKey ) ;
}
// Where we actuall call WWW to download the assetBundle.
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
#if ENABLE_NDINFRA_DEBUG_INFO
AssetBundleManager.Log(LogType.Info, "LoadAssetBundleInternal assetBundleName=" + assetBundleName);
#endif// ENABLE_NDINFRA_DEBUG_INFO
// Already loaded.
LoadedAssetBundle bundle = null;
#if ENABLE_NDINFRA_CUSTOM
// assetBundleName may be with variant extention, but m_LoadedAssetBundles doesn't
string shortKey = RemovePostVariant(assetBundleName);
m_LoadedAssetBundles.TryGetValue(shortKey, out bundle);
#else
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
#endif // ENABLE_NDINFRA_CUSTOM
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
if (m_DownloadingWWWs.ContainsKey(assetBundleName))
{
return(true);
}
WWW download = null;
string url = m_BaseDownloadingURL + assetBundleName;
#if ENABLE_NDINFRA_CUSTOM
// start check version
// assetBundleName is with variant extension.
#if ENABLE_NDINFRA_DEBUG_INFO
Debug.LogWarning("LoadAssetBundleInternal input and assemble url=" + url);
#endif // ENABLE_NDINFRA_DEBUG_INFO
string keyWoVariant = RemovePostVariant(assetBundleName);
bool isVersionExist = m_VersionTable.ContainsKey(keyWoVariant);
int targetVersion = 0;
if (isVersionExist)
{
targetVersion = m_VersionTable[keyWoVariant];
}
// check if we need to use local asset bundle
bool isLocalExist = m_LocalBundleTable.ContainsKey(keyWoVariant);
bool isUseLocalBundle = isLocalExist &&
(!isVersionExist || (isVersionExist &&
m_LocalBundleTable[keyWoVariant] >= m_VersionTable[keyWoVariant]));
if (true == isUseLocalBundle)
{
targetVersion = m_LocalBundleTable[keyWoVariant];
isVersionExist = true;
// change path to streaming assets path
url = GetStreamingAssetsPath() + "/AssetBundles/" + Utility.GetPlatformName() + "/" + assetBundleName;
#if ENABLE_NDINFRA_DEBUG_INFO
AssetBundleManager.Log(LogType.Info, "LoadAssetBundleInternal local bundle url=" + url);
#endif // ENABLE_NDINFRA_DEBUG_INFO
}
if (m_EnableVersionCheck && isVersionExist)
{
// url was used here
download = WWW.LoadFromCacheOrDownload(url, targetVersion);
}
else
{
#if ENABLE_NDINFRA_DEBUG_INFO
AssetBundleManager.Log(LogType.Info, "LoadAssetBundleInternal version not exists, beware of caching.");
#endif // ENABLE_NDINFRA_DEBUG_INFO
#endif // ENABLE_NDINFRA_CUSTOM
// For manifest assetbundle, always download it as we don't have hash for it.
if (isLoadingAssetBundleManifest)
{
download = new WWW(url);
}
else
{
download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
#if ENABLE_NDINFRA_CUSTOM
}
#endif // ENABLE_NDINFRA_CUSTOM
m_DownloadingWWWs.Add(assetBundleName, download);
return(false);
}
// Sets up download operation for the given asset bundle if it's not downloaded already.
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
// Already loaded.
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
if (m_DownloadingBundles.Contains(assetBundleName))
{
return(true);
}
string bundleBaseDownloadingURL = GetAssetBundleBaseDownloadingURL(assetBundleName);
if (bundleBaseDownloadingURL.ToLower().StartsWith("odr://"))
{
#if ENABLE_IOS_ON_DEMAND_RESOURCES
Log(LogType.Info, "Requesting bundle " + assetBundleName + " through ODR");
m_InProgressOperations.Add(new AssetBundleDownloadFromODROperation(assetBundleName));
#else
new ApplicationException("Can't load bundle " + assetBundleName + " through ODR: this Unity version or build target doesn't support it.");
#endif
}
else if (bundleBaseDownloadingURL.ToLower().StartsWith("res://"))
{
#if ENABLE_IOS_APP_SLICING
Log(LogType.Info, "Requesting bundle " + assetBundleName + " through asset catalog");
m_InProgressOperations.Add(new AssetBundleOpenFromAssetCatalogOperation(assetBundleName));
#else
new ApplicationException("Can't load bundle " + assetBundleName + " through asset catalog: this Unity version or build target doesn't support it.");
#endif
}
else
{
if (!bundleBaseDownloadingURL.EndsWith("/"))
{
bundleBaseDownloadingURL += "/";
}
string url = bundleBaseDownloadingURL + assetBundleName;
if (IsAssetBundleEncrypted)
{
#if ABM_USE_UWREQ
UnityWebRequest request = UnityWebRequest.Get(url);
m_InProgressOperations.Add(new AssetBundleDownloadWebRequestFromEncryptOperation(assetBundleName, request));
#else
WWW download = new WWW(url);
m_InProgressOperations.Add(new AssetBundleDownloadFromWebOperation(assetBundleName, download));
#endif
}
else
{
#if ABM_USE_UWREQ
// If url refers to a file in StreamingAssets, use AssetBundle.LoadFromFileAsync to load.
// UnityWebRequest also is able to load from there, but we use the former API because:
// - UnityWebRequest under Android OS fails to load StreamingAssets files (at least Unity5.50 or less)
// - or UnityWebRequest anyway internally calls AssetBundle.LoadFromFileAsync for StreamingAssets files
if (url.StartsWith(Application.streamingAssetsPath))
{
m_InProgressOperations.Add(new AssetBundleDownloadFileOperation(assetBundleName, url));
}
else
{
UnityWebRequest request = null;
if (isLoadingAssetBundleManifest || url.ToLower().StartsWith("file://"))
{
// For manifest assetbundle, always download it as we don't have hash for it.
request = UnityWebRequest.GetAssetBundle(url);
}
else
{
request = UnityWebRequest.GetAssetBundle(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
m_InProgressOperations.Add(new AssetBundleDownloadWebRequestOperation(assetBundleName, request));
}
#else
WWW download = null;
if (isLoadingAssetBundleManifest || url.ToLower().StartsWith("file://"))
{
// For manifest assetbundle, always download it as we don't have hash for it.
download = new WWW(url);
}
else
{
download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
m_InProgressOperations.Add(new AssetBundleDownloadFromWebOperation(assetBundleName, download));
#endif
}
}
m_DownloadingBundles.Add(assetBundleName);
return(false);
}
public IEnumerator LoadAssetBundleAsync(string assetBundleName)
{
assetBundleName = assetBundleName.ToLower();
AssetBundleCreateRequest bundleRequest = AssetBundle.LoadFromFileAsync(AssetBundleName2FilePath(assetBundleName));
yield return bundleRequest;
if (bundleRequest.assetBundle == null)
{
Debug.LogErrorFormat("Load AssetBundle Failed: {0}", assetBundleName);
yield break;
}
LoadedAssetBundle loadedAssetBundle = new LoadedAssetBundle(bundleRequest.assetBundle);
mLoadedAssetBundles.Add(assetBundleName, loadedAssetBundle);
}
public void LoadAssetBundle(string assetBundleName)
{
assetBundleName = assetBundleName.ToLower();
AssetBundle asssetBundle = AssetBundle.LoadFromFile(AssetBundleName2FilePath(assetBundleName));
if (asssetBundle == null)
{
Debug.LogErrorFormat("Load AssetBundle Failed: {0}", assetBundleName);
return;
}
LoadedAssetBundle loadedAssetBundle = new LoadedAssetBundle(asssetBundle);
mLoadedAssetBundles.Add(assetBundleName, loadedAssetBundle);
}
// Where we actuall call WWW to download the assetBundle.
//这里我们事实调用WWW下载assetBundle
static protected bool LoadAssetBundleInternal(string assetBundleName, bool isLoadingAssetBundleManifest)
{
Debug.Log("load asset:" + assetBundleName);
// Already loaded.
//已经加载过;
LoadedAssetBundle bundle = null;
m_LoadedAssetBundles.TryGetValue(assetBundleName, out bundle);
if (bundle != null)
{
bundle.m_ReferencedCount++;
return(true);
}
// @TODO: Do we need to consider the referenced count of WWWs?
// In the demo, we never have duplicate WWWs as we wait LoadAssetAsync()/LoadLevelAsync() to be finished before calling another LoadAssetAsync()/LoadLevelAsync().
// But in the real case, users can call LoadAssetAsync()/LoadLevelAsync() several times then wait them to be finished which might have duplicate WWWs.
//我们需要考虑www的引用计数?;
//在这个demo，我们从来没有重复WWWs ，我们等LoadAssetAsync()/LoadLevelAsync()完成之前，调用其他LoadAssetAsync()/LoadLevelAsync();
//但实际情况，用户可能调用LoadAssetAsync()/LoadLevelAsync()几次，然后等待它们完成这可能有重复的www。
if (m_DownloadingWWWs.ContainsKey(assetBundleName))
{
return(true);
}
WWW download = null;
string url = "";
#if UNITY_STANDALONE_WIN || UNITY_EDITOR
url = m_BaseDownloadingURL + "\\" + assetBundleName; //自定义语句;
#elif UNITY_ANDROID || UNITY_IOS
url = m_BaseDownloadingURL + "/" + assetBundleName; //自定义语句;
#endif
// For manifest assetbundle, always download it as we don't have hash for it.
//因为 manifest assetbundle，已经下载它所以我们不对它hash;
if (isLoadingAssetBundleManifest)
{
download = new WWW(url);
}
else
{
download = WWW.LoadFromCacheOrDownload(url, m_AssetBundleManifest.GetAssetBundleHash(assetBundleName), 0);
}
m_DownloadingWWWs.Add(assetBundleName, download);
Debug.Log("download 资源: " + url);
return(false);
}
