public void FindObstaclesInBox(AxisAlignedBox box,
									   CollisionTileManager.AddTreeObstaclesCallback callback)
        {
            if (box.Intersects(location))
                callback(speedTree);
        }
        public void FindObstaclesInBox(AxisAlignedBox box,
									   CollisionTileManager.AddTreeObstaclesCallback callback)
        {
            if (box.Intersects(bounds))
            {
                foreach (Tree t in trees)
                {
                    t.FindObstaclesInBox(box, callback);
                }
            }
        }