// using by button
public void SpecReset()
{
tower.SetSpec(Specialization.Type.None);
// tower.Canvas.SetNoSpecIcon(true);
SpecIsEmpty();
}
public void SpecButtonClicked(int value)
{
Debug.Log($"SpecButtonClicked {value}");
tower.SetSpec((Specialization.Type)(value + 1));
Hide();
}