AssetDatabase.GetAssetPath() doesn't work with Meshes.

Currently working on writing a saving system with XML. Where I write the file location of certain fields. Blah, Blah. My issue is that I can't retrieve the mesh asset path. For example:

Code (CSharp):

1. AssetDatabase.GetAssetPath(someMesh);

Will return an empty string. I did a bit of investigating and if you right-click on a mesh in the Project window, and select "Show in Explorer". It opens to show a .blend(or any other format it is orginally in; I assume).

How should I work around this. Currently I use GetAssetPath() at save time, and then GetAssetAtPath() at load time for such things as Texture2D and this works perfectly. How should I go about this?

 

not sure if it helps, but i've used this in some editorwindow script:

Code (CSharp):

1. Debug.Log("meshasset:"+AssetDatabase.GetAssetPath(Selection.activeGameObject.GetComponent<MeshFilter>().sharedMesh));

 

AssetDatabase is of course an editor-only thing.

The following code prints the (In my test case) 3ds Max file where the mesh is found.

Code (CSharp):

1.     Mesh mesh;
2.     void OnGUI () {
3.         mesh = (Mesh) EditorGUILayout.ObjectField( mesh, typeof( Mesh ), false );
4.         if ( GUILayout.Button( "Mesh is where?" ) ) {
5.             Debug.Log( AssetDatabase.GetAssetPath( mesh ) );
6.         }
7.     }
8.  

Naturally, if the mesh chosen is one of the primitives (Cube, Sphere) then the path is empty, because there's no asset that contains them.

You should note that a .max file (or similar) can contain many mesh assets, which is why LoadAllAssetsAtPath exists.
http://docs.unity3d.com/ScriptReference/AssetDatabase.LoadAllAssetsAtPath.html

 

Hmm, thanks. I'll look into it. By editor-only you mean, this won't work in a standalone build correct? What would an alternative be for built projected?

 

http://docs.unity3d.com/ScriptReference/Resources.html

Resources is sort of like the run-time equivalent, you have to put assets in a resources folder - anything you put in gets included in the build, even things you never actually use.

It doesn't have any GetPath methods though. I'm not sure why you're really doing this, if you are creating meshes at runtime, then they are not assets, and therefore have no path; and if you are using meshes assigned by variable in the inspector, then you don't need to deal with paths at all.

And yeah, i don't think the AssetDatabase class will compile (nor does anything in the UnityEditor nameapce)

 

The idea is to load the mesh asset path from an XML file, and assign that mesh to a variable. Essentially saving/loading the mesh location into a file.

 

So you're generating asset paths during edit, then loading from path during run time - if so, then you can use AssetDatabase in the editor, and Resources in game.

 

No, that's my issue. I need to generate the asset path and be able to load an asset from its path at runtime.

 

Then I don't personally know of a way to do it.

If it was me, I'd just stick all my meshes into a big Mesh[] allMeshes array, then you can just save and load their indices.

 

Any updates on this?