public Alien(Vector3 _position, Vector3 _velocity, Character_Types Alien_Type, Model _myModel)
     : base(Alien_Type, _position, _myModel)
 {
     // Set attributes that are required for creation
     Velocity = _velocity;
     Points = ((int)Alien_Type + 1) * 10;
 }
        public Space_Invader_Char(Character_Types _character_Type, Vector3 _position, Model _myModel)
        {
            // Set attributes that are required for object creation

            Character_Type = _character_Type;
            myModel = _myModel;
            Position = _position;
            myBoundingSphere = myModel.Meshes[0].BoundingSphere;
            if (_character_Type == Character_Types.Bunker_Block)
            myBoundingSphere.Radius = myBoundingSphere.Radius * 0.5f;
            myBoundingSphere.Center.X = Position.X + myBoundingSphere.Radius;
            myBoundingSphere.Center.Y = Position.Y + myBoundingSphere.Radius;

            if (Character_Type == Character_Types.Cannon)
            myBoundingSphere.Center.Z += Position.Z;
            else
                myBoundingSphere.Center.Z += Position.Z;
        }