LoadSceneAsync from AssetBundle?

I'm trying to load a scene from asset bundle with progress, So I used this code

Code (CSharp):

1. void Start()
2. {
3.  AssetBundle.LoadFromFile("bundleName");
4.  StartCoroutine(SceneLoad("sceneName"));
5. }
6.  
7. IEnumerator SceneLoad(string sceneName)
8. {
9.  AsyncOperation op = SceneManager.LoadSceneAsync(sceneName, LoadSceneMode.Single);
10.  op.allowSceneActivation = false;
11.  int count = 0;
12.  while (op.progress < 0.8)
13.  {
14.   Debug.Log(count++);
15.   yield return null;
16.  }
17.  op.allowSceneActivation = true;
18. }

but it has only progress 0, and many errors that

and finished successfully.

So the progress is only 0 and 0.9.
What's the problem?

 

Is the name of your bundel "bundleName"?
Is the name of your scene "sceneName"?
Because that's what you have in your Start function.

 

Thanks for reply.
It is a sample name, of course.
I think the name is not a problem, because next scene is loaded successfully.

 

You are just async-loading a scene called sceneName (directly from your available scenes) and you are doing nothing with the actual asset bundle you loaded on line 3.

Instead you want to get an AssetBundle object out of your AssetBundle.LoadFromFile() call ( which can also be async!), and then use the .LoadAssetAsync<Scene>() method on that asset bundle instance that you have gotten back.

Check these docs: https://docs.unity3d.com/ScriptReference/AssetBundle.LoadFromFileAsync.html

 

Hi Kurt,
I've changed line 9 as you said,

Code (CSharp):

1. AssetBundleRequest op = bundle.LoadAssetAsync<Scene>(sceneName);

but it is not worked but has error like this

Is there something I have to do additionally?

 

Ah, slightly it seems there is a different method for scenes vs other assets, sorry to lead you astray.

I did find this answer however:

https://answers.unity.com/questions/915566/load-scene-from-asset-bundle-1.html

I think the green box is the API you need, but check that note at the very bottom of the green box about the paths.

 

Thanks Kurt, but it is not the point of my problem.
Scene is loaded with original code, but the progress count is not work.
Debug message shows 0 first, followed by many assertion error messages as below(all same messages).


After that, next scene "sceneName" is loaded successfully.

What is the error message means and what to do to make it work?

 

hi, has this been resolved?

 

I don't know for sure, but I struggled with the same 'assertion failed' error and managed to solve it by upgrading to a newer unity version.
(see https://issuetracker.unity3d.com/is...-with-loadasync-throws-assertion-failed-error )

As the url title says, there's a bug that throws an 'assertion failed' error when trying to load an asset that has an animator component on it. There is no problem loading it, but it spits out those errors.

So my guess is that the scene you're loading contains an asset that has an animator component on it.

The 'assertion failed' error has been solved in Unity 2018.1

But this is only about the 'assertion failed' error.