public void Load()
    {
        string path = FileBrowser.OpenSingleFile("Open File", Application.dataPath + "/Data", "xml");

        ResetWorld();
        timeline        = TimeLineIO.Load(path);
        firstActionTime = Time.time;
        SetPosition(0);
        Stop();
    }
    public void Save()
    {
        string path = FileBrowser.SaveFile("Save File", Application.dataPath + "/Data", "Model", "xml");

        TimeLineIO.Save(timeline, path);
    }