private void InsertObject(Actor actor, RectBox actorBounds, RectBox bounds, RectBox area, BSPCollisionNode node, RectBox result1, RectBox result2) { if (!node.ContainsActor(actor)) { if (!node.IsEmpty() && (area.width > actorBounds.width || area.height > actorBounds.height)) { RectBox leftArea = node.GetLeftArea(); RectBox rightArea = node.GetRightArea(); RectBox leftIntersects = RectBox.GetIntersection(leftArea, bounds, result1); RectBox rightIntersects = RectBox.GetIntersection(rightArea, bounds, result2); BSPCollisionNode newRight; if (leftIntersects != null) { if (node.GetLeft() == null) { newRight = this.CreateNewNode(leftArea); newRight.AddActor(actor); node.SetChild(0, newRight); } else { this.InsertObject(actor, actorBounds, leftIntersects, leftArea, node.GetLeft(), result1, result2); } } if (rightIntersects != null) { if (node.GetRight() == null) { newRight = this.CreateNewNode(rightArea); newRight.AddActor(actor); node.SetChild(1, newRight); } else { this.InsertObject(actor, actorBounds, rightIntersects, rightArea, node.GetRight(), result1, result2); } } } else { node.AddActor(actor); } } }