Files
CypherCore/Source/Game/Entities/Object/Update/UpdateMask.cs
T
2018-12-14 18:43:35 -05:00

112 lines
3.3 KiB
C#

/*
* Copyright (C) 2012-2018 CypherCore <http://github.com/CypherCore>
*
* 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 3 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/>.
*/
using Framework.Constants;
using Framework.IO;
using System.Collections;
using System;
namespace Game.Entities
{
public class UpdateMask
{
public UpdateMask(uint valuesCount = 0)
{
_fieldCount = valuesCount;
_blockCount = (valuesCount + 32 - 1) / 32;
_mask = new BitArray((int)valuesCount, false);
}
public void SetCount(int valuesCount)
{
_fieldCount = (uint)valuesCount;
_blockCount = (uint)(valuesCount + 32 - 1) / 32;
_mask = new BitArray((int)valuesCount, false);
}
public uint GetCount() { return _fieldCount; }
public virtual void AppendToPacket(ByteBuffer data)
{
data.WriteUInt8(_blockCount);
var maskArray = new byte[_blockCount << 2];
_mask.CopyTo(maskArray, 0);
data.WriteBytes(maskArray);
}
public bool GetBit(int index)
{
return _mask.Get(index);
}
public void SetBit(int index)
{
_mask.Set(index, true);
}
void UnsetBit(int index)
{
_mask.Set(index, false);
}
public void Clear()
{
_mask.SetAll(false);
}
protected uint _fieldCount;
protected uint _blockCount;
protected BitArray _mask;
}
public class DynamicUpdateMask : UpdateMask
{
public DynamicUpdateMask(uint valuesCount) : base(valuesCount) { }
public void EncodeDynamicFieldChangeType(DynamicFieldChangeType changeType, UpdateType updateType)
{
_updateType = updateType;
DynamicFieldChangeType = (uint)(_blockCount | ((uint)(changeType & Entities.DynamicFieldChangeType.ValueAndSizeChanged) * ((3 - (int)updateType /*this part evaluates to 0 if update type is not VALUES*/) / 3)));
}
public override void AppendToPacket(ByteBuffer data)
{
data.WriteUInt16(DynamicFieldChangeType);
if (DynamicFieldChangeType.HasAnyFlag((uint)Entities.DynamicFieldChangeType.ValueAndSizeChanged) && _updateType == UpdateType.Values)
data.WriteUInt32(_fieldCount);
var maskArray = new byte[_blockCount << 2];
_mask.CopyTo(maskArray, 0);
data.WriteBytes(maskArray);
}
public uint DynamicFieldChangeType;
public UpdateType _updateType;
}
public enum DynamicFieldChangeType
{
Unchanged = 0,
ValueChanged = 0x7FFF,
ValueAndSizeChanged = 0x8000
}
}