khanat-opennel-code/code/ryzom/common/src/game_share/fog_of_war.cpp
2010-05-06 02:08:41 +02:00

88 lines
2.5 KiB
C++

// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdpch.h"
#include "fog_of_war.h"
// ****************************************************************************
IFogOfWar::IFogOfWar()
{
MapWidth = MapHeight = 0;
MinX = MinY = MaxX = MaxY = 0.0f;
}
// ****************************************************************************
IFogOfWar::~IFogOfWar()
{
}
// ****************************************************************************
void IFogOfWar::explore(float worldPosX, float worldPosY)
{
uint8 *pData = getData();
if (pData == NULL)
return;
if ((worldPosX < MinX) ||
(worldPosX > MaxX) ||
(worldPosY < MinY) ||
(worldPosY > MaxY))
return;
sint16 w = MapWidth;
sint16 h = MapHeight;
sint16 bmpPosX = sint16(sint32((w-1) * (worldPosX - MinX) / (MaxX - MinX) + 0.5));
sint16 bmpPosY = sint16(sint32((h-1) * (worldPosY - MinY) / (MaxY - MinY) + 0.5));
sint16 wReal = getRealWidth();
if ((bmpPosX >= 0) && (bmpPosX < w) &&
(bmpPosY >= 0) && (bmpPosY < h))
if (pData[bmpPosX+bmpPosY*wReal] == 0)
{
pData[bmpPosX+bmpPosY*wReal] = 255;
explored(bmpPosX, bmpPosY); // Launch callback
}
}
// ****************************************************************************
void IFogOfWar::serial(class NLMISC::IStream &f) throw(NLMISC::EStream)
{
f.serialVersion(0);
f.serial(MapWidth);
f.serial(MapHeight);
f.serial(MinX);
f.serial(MinY);
f.serial(MaxX);
f.serial(MaxY);
if (f.isReading())
if ((MapWidth != 0) && (MapHeight != 0))
createData(MapWidth, MapHeight);
if (getData() == NULL)
{
nlwarning("cannot save fog of war texture");
return;
}
for (uint16 i = 0; i < MapHeight; ++i)
f.serialBuffer(getData()+getRealWidth()*i, MapWidth);
}