public override void LoadFromXElement(XElement root)
        {
            base.LoadFromXElement(root);

                Mass =  Convert.ToSingle(root.Element("Mass").Value);
                Velocity = new Vector2();
                XElement b = root.Element("Velocity");
                XElement a = root.Element("Velocity").Element("Vector2");
                Velocity = Velocity.loadFromXElement(root.Element("Velocity").Element("Vector2"));
                Force = new Vector2();
                Force = Force.loadFromXElement(root.Element("Force").Element("Vector2"));
                AllowFriction = Convert.ToBoolean(root.Element("AllowFriction").Value);
        }