public override string runCommand(World world, string[] args)
    {
        TilemapRenderer tr;

        FogRenderer fr = GameObject.FindObjectOfType <FogRenderer>();

        if (fr != null)
        {
            tr = fr.GetComponentInChildren <TilemapRenderer>();
        }
        else
        {
            return("Could not find Component FogRenderer");
        }

        if (tr != null)
        {
            tr.enabled = !tr.enabled;
            return("toggling fog visibility");
        }
        else
        {
            return("Could not find Fog Tilemap");
        }
    }