/*
 * Copyright (C) 2008 Trinity <http://www.trinitycore.org/>
 *
 * Thanks to the original authors: MaNGOS <http://www.mangosproject.org/>
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef __UPDATEDATA_H
#define __UPDATEDATA_H

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         = 0x00,
    UPDATEFLAG_SELF         = 0x01,
    UPDATEFLAG_TRANSPORT    = 0x02,
    UPDATEFLAG_FULLGUID     = 0x04,
    UPDATEFLAG_LOWGUID      = 0x08,
    UPDATEFLAG_HIGHGUID     = 0x10,
    UPDATEFLAG_LIVING       = 0x20,
    UPDATEFLAG_HASPOSITION  = 0x40
};

class UpdateData
{
    public:
        UpdateData();

        void AddOutOfRangeGUID(std::set<uint64>& guids);
        void AddOutOfRangeGUID(const uint64 &guid);
        void AddUpdateBlock(const ByteBuffer &block);
        bool BuildPacket(WorldPacket *packet, bool hasTransport = false);
        bool HasData() { 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
