{

std::hash<T> hasher;

seed ^= hasher(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);

float light_adaptation;

rgbf adapt_to_light(const rgbf& light)

{

const float influence=0.0001f;

float intensity=(light.r+light.g+light.b)/3.0;

light_adaptation=intensity*influence+light_adaptation*(1-influence);

float delta=light_adaptation-intensity;

rgbf ret;

ret.r=light.r-delta;

ret.g=light.g-delta;

ret.b=light.b-delta;

return ret;

//if light_adaptation/intensity~1 then draw 1,1,1 (i.e. totally adapted)

/*

//if light_adaptation/intensity!=0 then draw

}

void colorizeTile(int x,int y)

{

const int tile = x*(df::global::gps->dimy) + y;

old_opengl* p=reinterpret_cast<old_opengl*>(parent);

float *fg = p->fg + tile * 4 * 6;

float *bg = p->bg + tile * 4 * 6;

// float *tex = p->tex + tile * 2 * 6;

rgbf light=lightGrid[tile];//for light adaptation: rgbf light=adapt_to_light(lightGrid[tile]);

for (int i = 0; i < 6; i++) { //oh how sse would do wonders here, or shaders...

*(fg++) *= light.r;

*(fg++) *= light.g;

*(fg++) *= light.b;

*(fg++) = 1;

*(bg++) *= light.r;

*(bg++) *= light.g;

*(bg++) *= light.b;

*(bg++) = 1;

}

}

void reinitLightGrid(int w,int h)

{

std::lock_guard<std::mutex> guard{dataMutex};

lightGrid.resize(w*h,rgbf(1,1,1));

}

void reinitLightGrid()

{

reinitLightGrid(df::global::gps->dimy,df::global::gps->dimx);

}

std::mutex dataMutex;

std::vector<rgbf> lightGrid;

renderer_light(renderer* parent):renderer_wrap(parent),light_adaptation(1)

{

reinitLightGrid();

}

virtual void update_tile(int32_t x, int32_t y) {

renderer_wrap::update_tile(x,y);

std::lock_guard<std::mutex> guard{dataMutex};

colorizeTile(x,y);

};

virtual void update_all() {

renderer_wrap::update_all();

std::lock_guard<std::mutex> guard{dataMutex};

for (int x = 0; x < df::global::gps->dimx; x++)

for (int y = 0; y < df::global::gps->dimy; y++)

colorizeTile(x,y);

};

virtual void grid_resize(int32_t w, int32_t h) {

renderer_wrap::grid_resize(w,h);

reinitLightGrid(w,h);

};

virtual void resize(int32_t w, int32_t h) {

renderer_wrap::resize(w,h);

reinitLightGrid();

}

virtual void set_fullscreen()

{

renderer_wrap::set_fullscreen();

reinitLightGrid();

}

virtual void zoom(df::zoom_commands z)

{

renderer_wrap::zoom(z);

reinitLightGrid();

}

{

lightingEngine(renderer_light* target):myRenderer(target){}

virtual ~lightingEngine(){}

virtual void reinit()=0;

virtual void calculate()=0;

virtual void updateWindow()=0;

virtual void preRender()=0;

virtual void loadSettings()=0;

virtual void clear()=0;

virtual void setHour(float h)=0;

virtual void debug(bool enable)=0;

renderer_light* myRenderer;

{

rgbf power;

int radius;

bool flicker;

lightSource():power(0,0,0),radius(0),flicker(false)

{

}

lightSource(rgbf power,int radius);

float powerSquared()const

{

return power.r*power.r+power.g*power.g+power.b*power.b;

}

void combine(const lightSource& other);

{

bool isTransparent;

rgbf transparency;

bool isEmiting;

bool flicker;

rgbf emitColor;

int radius;

matLightDef():isTransparent(false),transparency(0,0,0),isEmiting(false),emitColor(0,0,0),radius(0){}

matLightDef(rgbf transparency,rgbf emit,int rad):isTransparent(true),transparency(transparency),

isEmiting(true),emitColor(emit),radius(rad){}

matLightDef(rgbf emit,int rad):isTransparent(false),transparency(0,0,0),isEmiting(true),emitColor(emit),radius(rad){}

matLightDef(rgbf transparency):isTransparent(true),transparency(transparency),isEmiting(false){}

lightSource makeSource(float size=1) const

{

if(size>0.999 && size<1.001)

return lightSource(emitColor,radius);

else

return lightSource(emitColor*size,radius*size);//todo check if this is sane

}

{

matLightDef light;

bool poweredOnly;

bool useMaterial;

float thickness;

float size;

buildingLightDef():poweredOnly(false),useMaterial(true),thickness(1.0f),size(1.0f){}

{

matLightDef light;

bool haul;

bool equiped;

bool onGround;

bool inBuilding;

bool inContainer;

bool useMaterial;

itemLightDef():haul(true),equiped(true),onGround(true),inBuilding(false),inContainer(false),useMaterial(true){}

{

matLightDef light;

{

lightingEngineViewscreen *parent;

DFHack::rect2d viewPort;

std::vector<std::unique_ptr<lightThread> > threadPool;

std::vector<lightSource>& lights;

std::mutex occlusionMutex;

std::condition_variable occlusionDone; //all threads wait for occlusion to finish

bool occlusionReady;

std::mutex unprocessedMutex;

std::stack<DFHack::rect2d> unprocessed; //stack of parts of map where lighting is not finished

std::vector<rgbf>& occlusion;

int& num_diffusion;

std::mutex writeLock; //mutex for lightMap

std::vector<rgbf>& lightMap;

std::condition_variable writesDone;

int writeCount;

lightThreadDispatch(lightingEngineViewscreen* p);

~lightThreadDispatch();

void signalDoneOcclusion();

void shutdown();

void waitForWrites();

int getW();

int getH();

void start(int count);

{

std::vector<rgbf> canvas;

lightThreadDispatch& dispatch;

DFHack::rect2d myRect;

void work(); //main light calculation function

void combine(); //combine existing canvas into global lightmap

std::thread *myThread;

std::atomic<bool> isDone;

lightThread(lightThreadDispatch& dispatch);

~lightThread();

void run();

void doLight(int x,int y);

void doRay(const rgbf& power,int cx,int cy,int tx,int ty,int num_diffuse);

rgbf lightUpCell(rgbf power,int dx,int dy,int tx,int ty);

{

lightingEngineViewscreen(renderer_light* target);

~lightingEngineViewscreen();

void reinit();

void calculate();

void updateWindow();

void preRender();

void loadSettings();

void clear();

void debug(bool enable){doDebug=enable;};

void fixAdvMode(int mode);

df::coord2d worldToViewportCoord(const df::coord2d& in,const DFHack::rect2d& r,const df::coord2d& window2d) ;

void doSun(const lightSource& sky,MapExtras::MapCache& map);

void doOcupancyAndLights();

rgbf propogateSun(MapExtras::Block* b, int x,int y,const rgbf& in,bool lastLevel);

void doRay(std::vector<rgbf> & target, rgbf power,int cx,int cy,int tx,int ty);

void doFovs();

void doLight(std::vector<rgbf> & target, int index);

rgbf lightUpCell(std::vector<rgbf> & target, rgbf power,int dx,int dy,int tx,int ty);

bool addLight(int tileId,const lightSource& light);

void addOclusion(int tileId,const rgbf& c,float thickness);

matLightDef* getMaterialDef(int matType,int matIndex);

buildingLightDef* getBuildingDef(df::building* bld);

creatureLightDef* getCreatureDef(df::unit* u);

itemLightDef* getItemDef(df::item* it);

//apply material to cell

void applyMaterial(int tileId,const matLightDef& mat,float size=1, float thickness = 1);

//try to find and apply material, if failed return false, and if def!=null then apply def.

bool applyMaterial(int tileId,int matType,int matIndex,float size=1,float thickness = 1,const matLightDef* def=NULL);

size_t inline getIndex(int x,int y)

{

return x*h+y;

}

df::coord2d inline getCoords(int index)

{

return df::coord2d(index/h, index%h);

}

//maps

std::vector<rgbf> lightMap;

std::vector<rgbf> ocupancy;

std::vector<lightSource> lights;

//Threading stuff

int num_diffuse; //under same lock as ocupancy

lightThreadDispatch threading;

//misc

void setHour(float h){dayHour=h;};

int getW()const {return w;}

int getH()const {return h;}

void lightWorkerThread(void * arg);

rgbf getSkyColor(float v);

bool doDebug;

//settings

float daySpeed;

float dayHour; //<0 to cycle

std::vector<rgbf> dayColors; // a gradient of colors, first to 0, last to 24

///set up sane settings if setting file does not exist.

void defaultSettings();

static int parseMaterials(lua_State* L);

static int parseSpecial(lua_State* L);

static int parseBuildings(lua_State* L);

static int parseItems(lua_State* L);

static int parseCreatures(lua_State* L);

//special stuff

matLightDef matLava;

matLightDef matIce;

matLightDef matAmbience;

matLightDef matCursor;

matLightDef matWall;

matLightDef matWater;

matLightDef matCitizen;

float levelDim;

int adv_mode;

//materials

std::unordered_map<std::pair<int,int>,matLightDef> matDefs;

//buildings

std::unordered_map<std::tuple<int,int,int>,buildingLightDef> buildingDefs;

//creatures

std::unordered_map<std::pair<int,int>,creatureLightDef> creatureDefs;

//items

std::unordered_map<std::pair<int,int>,itemLightDef> itemDefs;

int w,h;

DFHack::rect2d mapPort;

friend class lightThreadDispatch;