khanat-code-old/code/ryzom/client/src/fog_map.h
2013-06-17 16:03:24 +02:00

91 lines
2.9 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/>.
#ifndef CL_FOG_MAP_H
#define CL_FOG_MAP_H
#include "nel/misc/bitmap.h"
#include "nel/misc/vector_2f.h"
//
#include "light_cycle_manager.h"
//
#include "game_share/fog_map_build.h"
namespace NL3D
{
class UDriver;
}
// Fog state, can be setup in a driver
struct CFogState
{
CFogState() : FogEnabled(false)
{
}
bool FogEnabled;
NLMISC::CRGBA FogColor;
float FogStartDist;
float FogEndDist;
void setupInDriver(NL3D::UDriver &drv);
};
// A class that encodes fog color and distances
class CFogMap
{
public:
typedef CFogMapBuild::TMapType TMapType; // enumeration of various fog map
public:
// default ctor
CFogMap();
/** Init the fog map from a descriptor, and load the maps
* NB : lookup are performed on file names
* \return true if the initialisation succeed
*/
bool init(const CFogMapBuild &desc);
// init with explicit corners
bool init(const CFogMapBuild &desc, const NLMISC::CVector &minCoord, const NLMISC::CVector &maxCoord);
// Release datas
void release();
/// Compute the fog parameters at the given position.
void getFogParams(float referenceStartDist, float referenceEndDist, float x, float y, float dayNight, float duskRatio, CLightCycleManager::TLightState lightState, CFogState &result);
/** Get a map value with a world (x, y) position
* Default value is returned if no map was specified or if map wasn't loaded
*/
NLMISC::CRGBAF getMapValue(TMapType type, float x, float y, NLMISC::CRGBAF defaultValue) const;
//
NLMISC::CBitmap &getMap(TMapType type) { nlassert(type < CFogMapBuild::NumMap); return _Map[type]; }
const NLMISC::CVector2f &getMinCoord() const { return _MinCoord; }
const NLMISC::CVector2f &getMaxCoord() const { return _MaxCoord; }
// convert a wortld pos into a map pos
void worldPosToMapPos(float inX, float inY, float &outX, float &outY) const;
private:
NLMISC::CVector2f _MinCoord;
NLMISC::CVector2f _MaxCoord;
NLMISC::CBitmap _Map[CFogMapBuild::NumMap];
private:
void load(NLMISC::CBitmap &bm, const std::string &filename);
NLMISC::CRGBAF getMapValueFromMapCoord(TMapType type, float x, float y, NLMISC::CRGBAF defaultValue) const;
};
#endif