/***************************************************************************
 *                                Movement.cs
 *                            -------------------
 *   begin                : May 1, 2002
 *   copyright            : (C) The RunUO Software Team
 *   email                : info@runuo.com
 *
 *   $Id$
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

namespace Server.Movement
{
    public static class Movement
    {
        public static IMovementImpl Impl { get; set; }

        public static bool CheckMovement(Mobile m, Direction d, out int newZ)
        {
            if (Impl != null)
                return Impl.CheckMovement(m, d, out newZ);

            newZ = m.Z;
            return false;
        }

        public static bool CheckMovement(Mobile m, Map map, Point3D loc, Direction d, out int newZ)
        {
            if (Impl != null)
                return Impl.CheckMovement(m, map, loc, d, out newZ);

            newZ = m.Z;
            return false;
        }

        public static void Offset(Direction d, ref int x, ref int y)
        {
            switch (d & Direction.Mask)
            {
                case Direction.North:
                    --y;
                    break;
                case Direction.South:
                    ++y;
                    break;
                case Direction.West:
                    --x;
                    break;
                case Direction.East:
                    ++x;
                    break;
                case Direction.Right:
                    ++x;
                    --y;
                    break;
                case Direction.Left:
                    --x;
                    ++y;
                    break;
                case Direction.Down:
                    ++x;
                    ++y;
                    break;
                case Direction.Up:
                    --x;
                    --y;
                    break;
            }
        }
    }

    public interface IMovementImpl
    {
        bool CheckMovement(Mobile m, Direction d, out int newZ);
        bool CheckMovement(Mobile m, Map map, Point3D loc, Direction d, out int newZ);
    }
}