public void InitModelButtons(Config_Map mapConfig)
{
_terraintoolkit ??= FindObjectOfType <TerrainToolkit>();
// for each model, add 1 button to parent
for (int i = 0; i < mapConfig.Models.Count; i++)
{
var buttonID = i;
var button = Instantiate(_addModelButtonPrefab, _modelBar.transform);
button.GetComponent <UI_ModelView>().Init(mapConfig.Models[i].Thumbnail, mapConfig.Models[i].ThumbnailName);
button.onClick.AddListener(() => _terraintoolkit.OnClickAddSModel(buttonID));
}
}