AssetBundle scene

Unity Engine
1

Hello unity community,

This is my first post on this forum therefore: Hello everyone!

I have recently started to learn Unity for my new job. I have accustomed myself quite well and the first fruits of my work start to flourish. Unity is a nice framework. However I got a question that I can’t seem to find a good tutorial/howto about and the forum search is currently broken for me (504 timeout or just blank page).

I dynamically load scenes from asset bundles like this:

	void ButtonPressed(){
		string url = "file://" + Application.dataPath + "/AssetBundles/GameScene.unity3d";
		StartCoroutine(DownloadAndStartLevel(url));
	}
	
	IEnumerator DownloadAndStartLevel (string url) {
		WWW www = new WWW(url);
		yield return www;
		if ( www.error != null ) {
            Debug.LogError( www.error );
            www.Dispose();
            yield break;
        }
		
		www.assetBundle.LoadAll();
		Application.LoadLevel("Game");
	}

This code works but produces an error:

The asset bundle '.../AssetBundles/GameScene.unity3d' can't be loaded because another asset bundle with the same files are already loaded

This error is produced by the line 15 (www.assetBundle.LoadAll();). However if I delete that line the LoadLevel function after it will not work anymore. If I just skip all AssetBundle loading and skip right to LoadLevel() I get the message that the scene doesn’t exist in the current build. So therefore I guess I have correctly configured the Login and Game scenes because trying to load a scene without loading its asset bundle will not work.

Even if this code still works I don’t like to get exceptions in my editor. What are the best practices for loading a scene (including the scenes assets) from an asset bundle?

2

Found the error. It was in the function calling ButtonPressed(). So I really tried to load the same asset bundle multiple times. -_-

The above code is working fine.