private void DetachChild(SceneNode child, bool cleanup) {
if (_isRunning)
{
child.OnExit();
}
if (cleanup)
{
child.CleanUp();
}
child.Parent = null;
_children.Remove(child);
}
public virtual void RemoveChild(SceneNode child, bool cleanup)
{
if (child != null)
{
if (Children.Contains(child))
{
DetachChild(child, cleanup);
}
}
}
public virtual SceneNode AddChild(SceneNode child)
{
if (child == null)
{
throw new ArgumentNullException("child");
}
if (child.Parent != null)
{
throw new ArgumentException("Child already has a parent", "child");
}
InsertChild(child);
child.Parent = this;
if (_isRunning)
{
child.OnEnter();
}
return this;
}
private void InsertChild(SceneNode child)
{
int i = 0;
bool added = false;
int z = child.ZOrder;
foreach (SceneNode node in _children)
{
if (node.ZOrder > z)
{
added = true;
_children.Insert(i, child);
break;
}
++i;
}
if (!added)
{
_children.Add(child);
}
child._zOrder = z;
}
public SceneNode(){
_name = "";
_id = 0;
_tag = TAG_INVALID;
_zOrder = 0;
_isTransformDirty = false;
_rotation = 0;
_scaleX = 1;
_scaleY = 1;
_position = Point.Zero;
_isRunning = false;
_isEnable = true;
_anchorPoint = Point.Zero;
_width = 0;
_height = 0;
_isVisible = true;
_children = new List<SceneNode>();
_parent = null;
_userData = null;
}