static void OpenDataTypeEditor()
        {
            RTSDataTypeEditor win = GetWindow <RTSDataTypeEditor>("RTS Data Types");

            win.minSize = new Vector2(400f, 300f);
            win.UpdateDataTypes();
            win.Show();
        }
 void OnDisable()
 {
     s_instance = null;
 }
 void OnEnable()
 {
     s_instance = this;
 }