756c8ff797
Based on the work of @stfx in commit: https://github.com/cmangos/mangos-classic/commit/48a84fb
130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
/**
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* MaNGOS is a full featured server for World of Warcraft, supporting
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* the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
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*
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* Copyright (C) 2005-2017 MaNGOS project <https://getmangos.eu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* World of Warcraft, and all World of Warcraft or Warcraft art, images,
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* and lore are copyrighted by Blizzard Entertainment, Inc.
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*/
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#ifndef MANGOS_H_UPDATEMASK
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#define MANGOS_H_UPDATEMASK
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#include "Errors.h"
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#include "ByteBuffer.h"
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class UpdateMask
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{
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public:
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/// Type representing how client reads update mask
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typedef uint32 ClientUpdateMaskType;
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enum UpdateMaskCount
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{
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CLIENT_UPDATE_MASK_BITS = sizeof(ClientUpdateMaskType) * 8,
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};
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UpdateMask() : _fieldCount(0), _blockCount(0), _bits(NULL) { }
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UpdateMask(UpdateMask const& right)
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{
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SetCount(right.GetCount());
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memcpy(_bits, right._bits, sizeof(uint8) * _blockCount * 32);
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}
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~UpdateMask() { delete[] _bits; }
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void SetBit(uint32 index) { _bits[index] = 1; }
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void UnsetBit(uint32 index) { _bits[index] = 0; }
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bool GetBit(uint32 index) const { return _bits[index] != 0; }
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void AppendToPacket(ByteBuffer* data)
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{
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for (uint32 i = 0; i < GetBlockCount(); ++i)
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{
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ClientUpdateMaskType maskPart = 0;
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for (uint32 j = 0; j < CLIENT_UPDATE_MASK_BITS; ++j)
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if (_bits[CLIENT_UPDATE_MASK_BITS * i + j])
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maskPart |= 1 << j;
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*data << maskPart;
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}
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}
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uint32 GetBlockCount() const { return _blockCount; }
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uint32 GetCount() const { return _fieldCount; }
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void SetCount(uint32 valuesCount)
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{
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delete[] _bits;
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_fieldCount = valuesCount;
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_blockCount = (valuesCount + CLIENT_UPDATE_MASK_BITS - 1) / CLIENT_UPDATE_MASK_BITS;
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_bits = new uint8[_blockCount * CLIENT_UPDATE_MASK_BITS];
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memset(_bits, 0, sizeof(uint8) * _blockCount * CLIENT_UPDATE_MASK_BITS);
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}
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void Clear()
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{
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if (_bits)
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memset(_bits, 0, sizeof(uint8) * _blockCount * CLIENT_UPDATE_MASK_BITS);
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}
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UpdateMask& operator=(UpdateMask const& right)
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{
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if (this == &right)
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return *this;
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SetCount(right.GetCount());
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memcpy(_bits, right._bits, sizeof(uint8) * _blockCount * CLIENT_UPDATE_MASK_BITS);
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return *this;
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}
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UpdateMask& operator&=(UpdateMask const& right)
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{
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MANGOS_ASSERT(right.GetCount() <= GetCount());
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for (uint32 i = 0; i < _fieldCount; ++i)
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_bits[i] &= right._bits[i];
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return *this;
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}
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UpdateMask& operator|=(UpdateMask const& right)
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{
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MANGOS_ASSERT(right.GetCount() <= GetCount());
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for (uint32 i = 0; i < _fieldCount; ++i)
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_bits[i] |= right._bits[i];
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return *this;
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}
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UpdateMask operator|(UpdateMask const& right)
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{
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UpdateMask ret(*this);
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ret |= right;
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return ret;
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}
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private:
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uint32 _fieldCount;
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uint32 _blockCount;
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uint8* _bits;
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};
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#endif
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