public void AddObject(ViewableObject viewable)
{
if (!viewable.IsInsideRectangle(this.quadBounds))
{
return;
}
if (this.viewableObjects.ContainsKey(viewable.Name))
{
return;
}
this.viewableObjects.Add(viewable.Name, viewable);
viewable.QuadTreeNodes.Add(this);
if (this.northeastNode != null && viewable.IsInsideRectangle(this.northeastNode.Bounds))
{
this.northeastNode.AddObject(viewable);
}
if (this.northwestNode != null && viewable.IsInsideRectangle(this.northwestNode.Bounds))
{
this.northwestNode.AddObject(viewable);
}
if (this.southeastNode != null && viewable.IsInsideRectangle(this.southeastNode.Bounds))
{
this.southeastNode.AddObject(viewable);
}
if (this.southwestNode != null && viewable.IsInsideRectangle(this.southwestNode.Bounds))
{
this.southwestNode.AddObject(viewable);
}
}
public void Update(ViewableObject viewableObject)
{
bool _needReset = false;
foreach (QuadTreeNode node in viewableObject.QuadTreeNodes)
{
if (!viewableObject.IsInsideRectangle(node.Bounds))
{
//there's at least 1 object that's no longer in
//the view. Need a reset.
_needReset = true;
break;
}
}
if (_needReset)
{
BaseNode.RemoveObject(viewableObject);
BaseNode.AddObject(viewableObject);
}
}