public void ChangeWeapon(int id)
{
currentWeapon.CleanUpWeapon(controller);
currentWeapon = WeaponBase.GetNewWeapon(id);
Debug.Assert(currentWeapon != null );
currentWeapon.InitWeapon(controller);
/// clean up objects on model
/// (weapon, skill ect, any game object which differs )
///
/// spawn new objects onto model
}