/// <summary>
/// Creates a new <see cref="StreamingAssetsAdaptor" /> instance.
/// </summary>
public StreamingAssetsAdaptor(string assetBundleName, StreamingAssetsAdaptorOptions options, bool downloadOnly = false)
{
m_DownloadOnly = downloadOnly;
if (AssetBundleLoader.Instance)
{
m_Coroutine = StreamingAssetsAdaptorImpl(assetBundleName, options);
AssetBundleLoader.Instance.StartCoroutine(m_Coroutine);
}
}
/// <summary>
/// Loads the asset bundle.
/// </summary>
private IEnumerator StreamingAssetsAdaptorImpl(string assetBundleName, StreamingAssetsAdaptorOptions options)
{
if (string.IsNullOrEmpty(assetBundleName))
{
throw new System.ArgumentNullException("assetBundleName");
}
if (string.IsNullOrEmpty(options.StreamingAssetsPath))
{
throw new System.ArgumentNullException("options.StreamingAssetsPath");
}
m_AssetBundle = null;
m_AssetBundleName = assetBundleName;
m_Error = null;
m_KeepWaiting = true;
// Skip any loading from the adaptor.
if (m_DownloadOnly)
{
Debug.LogFormat("[StreamingAssetsAdaptor] Bundle loading skipped : {0}", assetBundleName);
m_KeepWaiting = false;
m_Progress = 1;
yield break;
}
// use AssetBundle.LoadFromFileAsync instead of WWW on iOS and tvOS
#if UNITY_IOS || UNITY_TVOS
Debug.LogFormat("[StreamingAssetsAdaptor] Load asset bundle : {0}", assetBundleName);
m_AssetBundleCreateRequest = AssetBundle.LoadFromFileAsync(options.GetAssetBundlePath(assetBundleName));
while (!m_AssetBundleCreateRequest.isDone)
{
m_Progress = m_AssetBundleCreateRequest.progress;
yield return(null);
}
if (m_AssetBundleCreateRequest.assetBundle == null)
{
m_AssetBundle = null;
m_AssetBundleCreateRequest = null;
m_Error = string.Format("Could not load asset bundle from file: {0}", options.GetAssetBundlePath(assetBundleName));
m_KeepWaiting = false;
m_Progress = -1;
yield break;
}
m_AssetBundle = m_AssetBundleCreateRequest.assetBundle;
m_AssetBundleCreateRequest = null;
m_Error = null;
m_KeepWaiting = false;
m_Progress = 1;
yield break;
#else
#if UNITY_EDITOR
// Getting streaming assets path when playing from the editor but have set "Platform" to Android derivative.
m_WWW = new WWW("file://" + options.GetAssetBundlePath(assetBundleName));
#else
// Getting path to Android streaming assets when on an Android device.
m_WWW = new WWW(options.GetAssetBundlePath(assetBundleName));
#endif
Debug.LogFormat("StreamingAssetsAdaptor-> StreamingAssetsAdaptorImpl: Getting asset bundle path from {0}", m_WWW.url);
while (!m_WWW.isDone)
{
m_Progress = m_WWW.progress;
yield return(null);
}
if (!string.IsNullOrEmpty(m_WWW.error))
{
m_AssetBundle = null;
m_Error = m_WWW.error;
m_KeepWaiting = false;
m_Progress = -1;
m_WWW.Dispose();
m_WWW = null;
yield break;
}
m_AssetBundle = m_WWW.assetBundle;
m_Error = null;
m_KeepWaiting = false;
m_Progress = 1;
m_WWW.Dispose();
m_WWW = null;
yield break;
#endif
}