Hello.

The modified script is attached.

1. Move «ThirdPersonUserControl» script outside of «Standard Assets» or move «Online Maps» folder into «Standard Assets».
2. Wrap «ThirdPersonController» in a new empty GameObject, and create a prefab from the outer GameObject.
3. Use the new prefab for 3D marker.

Thanks, Alex! Works perfectly

...
  api.GetTilePosition(out px, out py);
...

 var cameraLook = Vector3.Scale(m_Cam.forward, new Vector3(-1, 0, -1)).normalized;
                m_Move = h * cameraLook + v * m_Cam.right;
                px -= m_Move.x * moveScale;
                py += m_Move.z * moveScale;
                double lng, lat;
                api.projection.TileToCoordinates(px, py, api.zoom, out lng, out lat);
                api.SetPosition(lng, lat);

The modified script is attached.

1. Move «ThirdPersonUserControl» script outside of «Standard Assets» or move «Online Maps» folder into «Standard Assets».
2. Wrap «ThirdPersonController» in a new empty GameObject, and create a prefab from the outer GameObject.
3. Use the new prefab for 3D marker.

Frankly to say, I am new in Unity3d (hovewer skilled in C#).
I have a 3dmap with buildings etc. I placed a 3dmarker (which is basicly a default unity3d thirdPersonController).

I have the script to control my 3dMarker:

    private void FixedUpdate()
    {
        OnlineMaps api = OnlineMaps.instance;

        float h = CrossPlatformInputManager.GetAxis("Horizontal");
        float v = CrossPlatformInputManager.GetAxis("Vertical");

       
        m_CamForward = Vector3.Scale(m_Cam.forward, new Vector3(1, 0, 1)).normalized;
        var position = v * m_CamForward + h * m_Cam.right;
        if (position.magnitude > 1f) position.Normalize();
        //probably I need to do something here to change h and v depending on the camera angle

        px += h / 100000;
        py += v / 100000;
        api.SetPosition(px, py);
}

So right now my player move in 4 directions. However, if I try to change camera look (with mouse right click), I want my character  move forward concidering new "north".

Could you please give a clue how to do this? Thank you.