private void ChangeIndex(GameObject gameObject, GameObject target, int increment = 0)
{
var collection = target?.Parent?.Children ?? SceneData.GameObjects;
if (!collection.Contains(gameObject))
{
MoveTo(gameObject, target?.Parent);
ChangeIndex(gameObject, target, increment);
return;
}
var oldIndex = Math.Max(collection.IndexOf(gameObject), 0);
var newIndex = Math.Min(collection.IndexOf(target) + increment, collection.Count);
if (newIndex > oldIndex)
newIndex--;
collection.Move(oldIndex, newIndex);
}
public void Drag()
{
(Parent?.Children ?? SceneData.GameObjects).Remove(this);
Parent = null;
}
private void MoveTo(GameObject gameObject, GameObject target)
{
(gameObject.Parent?.Children ?? SceneData.GameObjects).Remove(gameObject);
gameObject.Parent = target;
(target?.Children ?? SceneData.GameObjects).Add(gameObject);
}