private void ModelStarChangedEventHandler(object sender, Model.Event_Arguments.StarChangedEventArgs e)
{
if (e.Disappeared && _stars.ContainsKey(e.Point))
{
_sprites.Remove(_stars[e.Point]);
}
else
{
if (!_stars.ContainsKey(e.Point))
{
FrameworkElement newStar = InvadersHelper.StarControlFactory(Scale) as FrameworkElement;
_stars.Add(e.Point, newStar);
_sprites.Add(newStar);
InvadersHelper.RepositionElement(newStar, e.Point.X * Scale, e.Point.Y * Scale);
InvadersHelper.SendToBack(newStar);
}
}
}