/*
 * Copyright (C) 2008-2013 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __UPDATEDATA_H
#define __UPDATEDATA_H

#include "ByteBuffer.h"
#include <set>

class WorldPacket;

enum OBJECT_UPDATE_TYPE
{
    UPDATETYPE_VALUES               = 0,
    UPDATETYPE_MOVEMENT             = 1,
    UPDATETYPE_CREATE_OBJECT        = 2,
    UPDATETYPE_CREATE_OBJECT2       = 3,
    UPDATETYPE_OUT_OF_RANGE_OBJECTS = 4,
    UPDATETYPE_NEAR_OBJECTS         = 5
};

enum OBJECT_UPDATE_FLAGS
{
    UPDATEFLAG_NONE                 = 0x0000,
    UPDATEFLAG_SELF                 = 0x0001,
    UPDATEFLAG_TRANSPORT            = 0x0002,
    UPDATEFLAG_HAS_TARGET           = 0x0004,
    UPDATEFLAG_UNKNOWN              = 0x0008,
    UPDATEFLAG_LOWGUID              = 0x0010,
    UPDATEFLAG_LIVING               = 0x0020,
    UPDATEFLAG_STATIONARY_POSITION  = 0x0040,
    UPDATEFLAG_VEHICLE              = 0x0080,
    UPDATEFLAG_POSITION             = 0x0100,
    UPDATEFLAG_ROTATION             = 0x0200
};

class UpdateData
{
    public:
        UpdateData();

        void AddOutOfRangeGUID(std::set<uint64>& guids);
        void AddOutOfRangeGUID(uint64 guid);
        void AddUpdateBlock(const ByteBuffer &block);
        bool BuildPacket(WorldPacket* packet);
        bool HasData() const { return m_blockCount > 0 || !m_outOfRangeGUIDs.empty(); }
        void Clear();

        std::set<uint64> const& GetOutOfRangeGUIDs() const { return m_outOfRangeGUIDs; }

    protected:
        uint32 m_blockCount;
        std::set<uint64> m_outOfRangeGUIDs;
        ByteBuffer m_data;

        void Compress(void* dst, uint32 *dst_size, void* src, int src_size);
};
#endif

