dfhack/plugins/rendermax/renderer_light.cpp

267 lines
8.4 KiB
C++

#include "renderer_light.hpp"
#include <functional>
#include "Types.h"
#include "modules/Gui.h"
#include "modules/Screen.h"
#include "modules/Maps.h"
#include "df/graphic.h"
#include "df/viewscreen_dwarfmodest.h"
#include "df/flow_info.h"
using df::global::gps;
using namespace DFHack;
using df::coord2d;
const float levelDim=0.2f;
rect2d getMapViewport()
{
const int AREA_MAP_WIDTH = 23;
const int MENU_WIDTH = 30;
if(!gps || !df::viewscreen_dwarfmodest::_identity.is_instance(DFHack::Gui::getCurViewscreen()))
return mkrect_wh(0,0,0,0);
int w=gps->dimx;
int h=gps->dimy;
int view_height=h-2;
int area_x2 = w-AREA_MAP_WIDTH-2;
int menu_x2=w-MENU_WIDTH-2;
int menu_x1=area_x2-MENU_WIDTH-1;
int view_rb=w-1;
int area_pos=*df::global::ui_area_map_width;
int menu_pos=*df::global::ui_menu_width;
if(area_pos<3)
{
view_rb=area_x2;
}
if (menu_pos<area_pos || df::global::ui->main.mode!=0)
{
if (menu_pos >= area_pos)
menu_pos = area_pos-1;
int menu_x = menu_x2;
if(menu_pos < 2) menu_x = menu_x1;
view_rb = menu_x;
}
return mkrect_wh(1,1,view_rb,view_height+1);
}
lightingEngineViewscreen::lightingEngineViewscreen(renderer_light* target):lightingEngine(target)
{
reinit();
}
void lightingEngineViewscreen::reinit()
{
if(!gps)
return;
w=gps->dimx;
h=gps->dimy;
size_t size=w*h;
lightMap.resize(size,lightCell(1,1,1));
ocupancy.resize(size);
}
void plotCircle(int xm, int ym, int r,std::function<void(int,int)> setPixel)
{
int x = -r, y = 0, err = 2-2*r; /* II. Quadrant */
do {
setPixel(xm-x, ym+y); /* I. Quadrant */
setPixel(xm-y, ym-x); /* II. Quadrant */
setPixel(xm+x, ym-y); /* III. Quadrant */
setPixel(xm+y, ym+x); /* IV. Quadrant */
r = err;
if (r <= y) err += ++y*2+1; /* e_xy+e_y < 0 */
if (r > x || err > y) err += ++x*2+1; /* e_xy+e_x > 0 or no 2nd y-step */
} while (x < 0);
}
void plotLine(int x0, int y0, int x1, int y1,std::function<bool(int,int,int,int)> setPixel)
{
int dx = abs(x1-x0), sx = x0<x1 ? 1 : -1;
int dy = -abs(y1-y0), sy = y0<y1 ? 1 : -1;
int err = dx+dy, e2; /* error value e_xy */
int rdx=0;
int rdy=0;
for(;;){ /* loop */
if(!setPixel(rdx,rdy,x0,y0))
return;
if (x0==x1 && y0==y1) break;
e2 = 2*err;
rdx=rdy=0;
if (e2 >= dy) { err += dy; x0 += sx; rdx=sx;} /* e_xy+e_x > 0 */
if (e2 <= dx) { err += dx; y0 += sy; rdy=sy;} /* e_xy+e_y < 0 */
}
}
lightCell blend(lightCell a,lightCell b)
{
return lightCell(std::max(a.r,b.r),std::max(a.g,b.g),std::max(a.b,b.b));
}
bool lightingEngineViewscreen::lightUpCell(lightCell& power,int dx,int dy,int tx,int ty)
{
if(tx>=mapPort.first.x && ty>=mapPort.first.y && tx<=mapPort.second.x && ty<=mapPort.second.y)
{
size_t tile=getIndex(tx,ty);
float dsq=dx*dx+dy*dy;
lightCell& v=ocupancy[tile];
bool wallhack=false;
bool outsidehack=false;
if(v.r+v.g+v.b==0)
wallhack=true;
if(v.r<0)
outsidehack=true;
if (dsq>0 && !wallhack && !outsidehack)
{
power.r=power.r*(pow(v.r,dsq));
power.g=power.g*(pow(v.g,dsq));
power.b=power.b*(pow(v.b,dsq));
}
//float dt=sqrt(dsq);
lightCell oldCol=lightMap[tile];
lightCell ncol=blend(power,oldCol);
lightMap[tile]=ncol;
if(wallhack)
return false;
if(dsq>0 && outsidehack)
return false;
float pwsq=power.r*power.r+power.g*power.g+power.b*power.b;
return pwsq>levelDim*levelDim;
}
else
return false;
}
void lightingEngineViewscreen::doRay(lightCell power,int cx,int cy,int tx,int ty)
{
using namespace std::placeholders;
lightCell curPower=power;
plotLine(cx,cy,tx,ty,std::bind(&lightingEngineViewscreen::lightUpCell,this,std::ref(curPower),_1,_2,_3,_4));
}
void lightingEngineViewscreen::doFovs()
{
mapPort=getMapViewport();
using namespace std::placeholders;
for(size_t i=0;i<lights.size();i++)
{
lightSource& csource=lights[i];
plotCircle(csource.pos.x,csource.pos.y,csource.radius,std::bind(&lightingEngineViewscreen::doRay,this,csource.power,csource.pos.x,csource.pos.y,_1,_2));
}
}
void lightingEngineViewscreen::calculate()
{
rect2d vp=getMapViewport();
const lightCell dim(levelDim,levelDim,levelDim);
lightMap.assign(lightMap.size(),lightCell(1,1,1));
for(int i=vp.first.x;i<vp.second.x;i++)
for(int j=vp.first.y;j<vp.second.y;j++)
{
lightMap[getIndex(i,j)]=dim;
}
doOcupancyAndLights();
doFovs();
//for each lightsource in viewscreen+x do light
}
void lightingEngineViewscreen::updateWindow()
{
tthread::lock_guard<tthread::fast_mutex> guard(myRenderer->dataMutex);
if(lightMap.size()!=myRenderer->lightGrid.size())
{
reinit();
return;
}
std::swap(lightMap,myRenderer->lightGrid);
rect2d vp=getMapViewport();
//myRenderer->invalidateRect(vp.first.x,vp.first.y,vp.second.x-vp.first.x,vp.second.y-vp.first.y);
myRenderer->invalidate();
//std::copy(lightMap.begin(),lightMap.end(),myRenderer->lightGrid.begin());
}
void lightingEngineViewscreen::doOcupancyAndLights()
{
lights.clear();
rect2d vp=getMapViewport();
int window_x=*df::global::window_x;
int window_y=*df::global::window_y;
int window_z=*df::global::window_z;
int vpW=vp.second.x-vp.first.x;
int vpH=vp.second.y-vp.first.y;
for(int x=window_x;x<window_x+vpW;x++)
for(int y=window_y;y<window_y+vpH;y++)
{
int wx=x-window_x+vp.first.x;
int wy=y-window_y+vp.first.y;
lightCell& curCell=ocupancy[getIndex(wx,wy)];
curCell=lightCell(0.8f,0.8f,0.8f);
df::tiletype* type = Maps::getTileType(x,y,window_z);
if(!type)
continue;
df::tiletype_shape shape = ENUM_ATTR(tiletype,shape,*type);
df::tile_designation* d=Maps::getTileDesignation(x,y,window_z);
df::tile_designation* d2=Maps::getTileDesignation(x,y,window_z-1);
df::tile_occupancy* o=Maps::getTileOccupancy(x,y,window_z);
if(!o || !d )
continue;
if(shape==df::tiletype_shape::BROOK_BED || shape==df::tiletype_shape::WALL || shape==df::tiletype_shape::TREE || o->bits.building)
{
curCell=lightCell(0,0,0);
}
else if(!d->bits.liquid_type && d->bits.flow_size>3 )
{
curCell=lightCell(0.5f,0.5f,0.6f);
}
//todo constructions
//lights
if((d->bits.liquid_type && d->bits.flow_size>0)|| (d2 && d2->bits.liquid_type && d2->bits.flow_size>0))
{
lightSource lava={lightCell(0.8f,0.2f,0.2f),5,coord2d(wx,wy)};
lights.push_back(lava);
}
if(d->bits.outside)
{
lightSource sun={lightCell(1,1,1),25,coord2d(wx,wy)};
lights.push_back(sun);
curCell=lightCell(-1,-1,-1);//Marking as outside so no calculation is done on it
}
}
for(int blockx=window_x/16;blockx<(window_x+vpW)/16;blockx++)
for(int blocky=window_y/16;blocky<(window_x+vpW)/16;blocky++)
{
df::map_block* block=Maps::getBlock(blockx,blocky,window_z);
if(!block)
continue;
for(int i=0;i<block->flows.size();i++)
{
df::flow_info* f=block->flows[i];
if(f && f->density>0 && f->type==df::flow_type::Dragonfire || f->type==df::flow_type::Fire)
{
df::coord2d pos=f->pos;
int wx=pos.x-window_x+vp.first.x;
int wy=pos.y-window_y+vp.first.y;
if(wx>=vp.first.x && wy>=vp.first.y && wx<=vp.second.x && wy<=vp.second.y)
{
lightCell fireColor;
if(f->density>60)
{
fireColor=lightCell(0.98f,0.91f,0.30f);
}
else if(f->density>30)
{
fireColor=lightCell(0.93f,0.16f,0.16f);
}
else
{
fireColor=lightCell(0.64f,0.0f,0.0f);
}
lightSource fire={fireColor,f->density/5,coord2d(wx,wy)};
lights.push_back(fire);
}
}
}
}
}