Downloading Progress

Unity Engine
1

Hello all,

So I have a few assets bundled up, mind you there are no prefabs, just files from the Resources.Load folder and the StreamedAssets Folder.

My file is quite big and I would like to see the progress bar loading but it’s not working…

Also will I be able to just use Resources.Load etc after they are uncompressed?

private IEnumerator Download()
    {
        WWW download = WWW.LoadFromCacheOrDownload( "http://www.server.com/whatever.unity3d", 1 );


        while( download.progress < 1 )
        {
            m_CurrentValue = download.progress * 100;
            Debug.Log( string.Format( "Progress - {0}%. from {1}", download.progress * 100, download.url ) );
            yield return new WaitForSeconds( .1f );
        }

        yield return download;


        if( download.error != null )
        {
            Debug.LogError( download.error );
            return false;
        }
        AssetBundle bundle = download.assetBundle;
        bundle.LoadAll();
    }
2

I think you should remove the yield for “download” and do something like this:

WWW download = WWW.LoadFromCacheOrDownload( "http://www.server.com/whatever.unity3d", 1 );
while( !download.isDone ) {
   m_CurrentValue = download.progress * 100;
   yield return null;
}
if (!string.IsNullOrEmpty(download.error)) {
   // error!
} else {
   // success!
}
1 Like
3

Woo it works by removing the yield return download… But why? I left it with yield return new WaitForSeconds( .1f ); so I can see the bar loading

1 Like
4

Why don’t you start another co-routine for the progress? I’m using Unity Web Request instead of WWW. Here is my solution.

private Transform loaderParent;
private bool isDownload = false;

   
    public void LoadAssetBundle(string url, string bundleName)
    {
        StartCoroutine(AssetLoad(url, bundleName));
    }

    IEnumerator AssetLoad(string url, string bundleName)
    {
        using (UnityWebRequest request = UnityWebRequest.GetAssetBundle(url))
        {
            Debug.Log("Trying the bundle download");
            isDownload = true;

            StartCoroutine(progress(request));

            yield return request.SendWebRequest();
            isDownload = false;

            if(request.isNetworkError || request.isHttpError)
            {
                Debug.Log("Error loading");
            }
            else
            {
                Debug.Log("Bundle downloaded");
                //save the asset bundle
                AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(request);

                //test
                //instantiate the prefab
                GameObject obj = bundle.LoadAsset<GameObject>(bundleName);
                Instantiate(obj, Vector3.zero, Quaternion.identity, loaderParent);
               
            }
        }

        yield return null;
    }

    IEnumerator progress(UnityWebRequest req)
    {
        while (isDownload)
        {
            Debug.Log("Downloading : " + req.downloadProgress * 100 + "%");
            yield return new WaitForSeconds(0.1f);
        }
    }
7 Likes
5