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gzdoom/src/p_3dfloors.cpp

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/*
** p_3dfloor.cpp
**
** 3D-floor handling
**
**---------------------------------------------------------------------------
** Copyright 2005-2008 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
** 4. Full disclosure of the entire project's source code, except for third
** party libraries is mandatory. (NOTE: This clause is non-negotiable!)
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "templates.h"
#include "p_local.h"
#include "p_lnspec.h"
#include "w_wad.h"
#include "sc_man.h"
#include "g_level.h"
#include "r_data/colormaps.h"
#ifdef _3DFLOORS
//==========================================================================
//
// 3D Floors
//
//==========================================================================
//==========================================================================
//
// Wrappers to access the colormap information
//
//==========================================================================
FDynamicColormap *F3DFloor::GetColormap()
{
// If there's no fog in either model or target sector this is easy and fast.
if ((target->ColorMap->Fade == 0 && model->ColorMap->Fade == 0) || (flags & FF_FADEWALLS))
{
return model->ColorMap;
}
else
{
// We must create a new colormap combining the properties we need
return GetSpecialLights(model->ColorMap->Color, target->ColorMap->Fade, model->ColorMap->Desaturate);
}
}
PalEntry F3DFloor::GetBlend()
{
// The model sector's fog is used as blend unless FF_FADEWALLS is set.
if (!(flags & FF_FADEWALLS) && target->ColorMap->Fade != model->ColorMap->Fade)
{
return model->ColorMap->Fade;
}
else
{
return 0;
}
}
void F3DFloor::UpdateColormap(FDynamicColormap *&map)
{
// If there's no fog in either model or target sector (or both have the same fog) this is easy and fast.
if ((target->ColorMap->Fade == 0 && model->ColorMap->Fade == 0) || (flags & FF_FADEWALLS) ||
target->ColorMap->Fade == model->ColorMap->Fade)
{
map = model->ColorMap;
}
else
{
// since rebuilding the map is not a cheap operation let's only do it if something really changed.
if (map->Color != model->ColorMap->Color || map->Fade != target->ColorMap->Fade ||
map->Desaturate != model->ColorMap->Desaturate)
{
map = GetSpecialLights(model->ColorMap->Color, target->ColorMap->Fade, model->ColorMap->Desaturate);
}
}
}
//==========================================================================
//
// Add one 3D floor to the sector
//
//==========================================================================
static void P_Add3DFloor(sector_t* sec, sector_t* sec2, line_t* master, int flags,int transluc)
{
F3DFloor* ffloor;
unsigned i;
if(!(flags & FF_THISINSIDE)) {
for(i = 0; i < sec2->e->XFloor.attached.Size(); i++) if(sec2->e->XFloor.attached[i] == sec) return;
sec2->e->XFloor.attached.Push(sec);
}
//Add the floor
ffloor = new F3DFloor;
ffloor->top.model = ffloor->bottom.model = ffloor->model = sec2;
ffloor->target = sec;
ffloor->ceilingclip = ffloor->floorclip = NULL;
ffloor->validcount = 0;
if (!(flags&FF_THINFLOOR))
{
ffloor->bottom.plane = &sec2->floorplane;
ffloor->bottom.texture = &sec2->planes[sector_t::floor].Texture;
ffloor->bottom.texheight = &sec2->planes[sector_t::floor].TexZ;
ffloor->bottom.isceiling = sector_t::floor;
}
else
{
ffloor->bottom.plane = &sec2->ceilingplane;
ffloor->bottom.texture = &sec2->planes[sector_t::ceiling].Texture;
ffloor->bottom.texheight = &sec2->planes[sector_t::ceiling].TexZ;
ffloor->bottom.isceiling = sector_t::ceiling;
}
if (!(flags&FF_FIX))
{
ffloor->top.plane = &sec2->ceilingplane;
ffloor->top.texture = &sec2->planes[sector_t::ceiling].Texture;
ffloor->top.texheight = &sec2->planes[sector_t::ceiling].TexZ;
ffloor->toplightlevel = &sec2->lightlevel;
ffloor->top.isceiling = sector_t::ceiling;
}
else // FF_FIX is a special case to patch rendering holes
{
ffloor->top.plane = &sec->floorplane;
ffloor->top.texture = &sec2->planes[sector_t::floor].Texture;
ffloor->top.texheight = &sec2->planes[sector_t::floor].TexZ;
ffloor->toplightlevel = &sec->lightlevel;
ffloor->top.isceiling = sector_t::floor;
ffloor->top.model = sec;
}
// Hacks for Vavoom's idiotic implementation
if (flags&FF_INVERTSECTOR)
{
// switch the planes
F3DFloor::planeref sp = ffloor->top;
ffloor->top=ffloor->bottom;
ffloor->bottom=sp;
if (flags&FF_SWIMMABLE)
{
// Vavoom floods the lower part if it is swimmable.
// fortunately this plane won't be rendered - otherwise this wouldn't work...
ffloor->bottom.plane=&sec->floorplane;
ffloor->bottom.model=sec;
ffloor->bottom.isceiling = sector_t::floor;
}
}
ffloor->flags = flags;
ffloor->master = master;
ffloor->alpha = transluc;
ffloor->top.vindex = ffloor->bottom.vindex = -1;
// The engine cannot handle sloped translucent floors. Sorry
if (ffloor->top.plane->a || ffloor->top.plane->b || ffloor->bottom.plane->a || ffloor->bottom.plane->b)
{
ffloor->alpha = FRACUNIT;
ffloor->flags &= ~FF_ADDITIVETRANS;
}
if(flags & FF_THISINSIDE) {
// switch the planes
F3DFloor::planeref sp = ffloor->top;
ffloor->top=ffloor->bottom;
ffloor->bottom=sp;
}
sec->e->XFloor.ffloors.Push(ffloor);
// kg3D - software renderer only hack
// this is really required because of ceilingclip and floorclip
if(flags & FF_BOTHPLANES) P_Add3DFloor(sec, sec2, master, FF_EXISTS | FF_THISINSIDE | FF_RENDERPLANES | FF_NOSHADE | FF_SEETHROUGH | FF_SHOOTTHROUGH | (flags & FF_INVERTSECTOR), transluc);
}
//==========================================================================
//
// Creates all 3D floors defined by one linedef
//
//==========================================================================
static int P_Set3DFloor(line_t * line, int param,int param2, int alpha)
{
int s,i;
int flags;
int tag=line->args[0];
sector_t * sec = line->frontsector, * ss;
for (s=-1; (s = P_FindSectorFromTag(tag,s)) >= 0;)
{
ss=&sectors[s];
if (param==0)
{
flags=FF_EXISTS|FF_RENDERALL|FF_SOLID|FF_INVERTSECTOR;
for (i=0;i<sec->linecount;i++)
{
line_t * l=sec->lines[i];
alpha=255;
if (l->special==Sector_SetContents && l->frontsector==sec)
{
alpha=clamp<int>(l->args[1], 0, 100);
if (l->args[2] & 1) flags &= ~FF_SOLID;
if (l->args[2] & 2) flags |= FF_SEETHROUGH;
if (l->args[2] & 4) flags |= FF_SHOOTTHROUGH;
if (l->args[2] & 8) flags |= FF_ADDITIVETRANS;
if (alpha!=100) flags|=FF_TRANSLUCENT;//|FF_BOTHPLANES|FF_ALLSIDES;
if (l->args[0])
{
// Yes, Vavoom's 3D-floor definitions suck!
// The content list changed in r1783 of Vavoom to be unified
// among all its supported games, so it has now ten different
// values instead of just five.
static DWORD vavoomcolors[]={VC_EMPTY,
VC_WATER, VC_LAVA, VC_NUKAGE, VC_SLIME, VC_HELLSLIME,
VC_BLOOD, VC_SLUDGE, VC_HAZARD, VC_BOOMWATER};
flags|=FF_SWIMMABLE|FF_BOTHPLANES|FF_ALLSIDES|FF_FLOOD;
l->frontsector->ColorMap =
GetSpecialLights (l->frontsector->ColorMap->Color,
(unsigned int)(vavoomcolors[l->args[0]]&VC_COLORMASK),
(unsigned int)(vavoomcolors[l->args[0]]&VC_ALPHAMASK)>>24);
// l->frontsector->ColorMap->Desaturate);
}
alpha=(alpha*255)/100;
break;
}
}
}
else if (param==4)
{
flags=FF_EXISTS|FF_RENDERPLANES|FF_INVERTPLANES|FF_NOSHADE|FF_FIX;
alpha=255;
}
else
{
static const int defflags[]= {0,
FF_SOLID,
FF_SWIMMABLE|FF_BOTHPLANES|FF_ALLSIDES|FF_SHOOTTHROUGH|FF_SEETHROUGH,
FF_SHOOTTHROUGH|FF_SEETHROUGH,
};
flags = defflags[param&3] | FF_EXISTS|FF_RENDERALL;
if (param&4) flags |= FF_ALLSIDES|FF_BOTHPLANES;
if (param&16) flags ^= FF_SEETHROUGH;
if (param&32) flags ^= FF_SHOOTTHROUGH;
if (param2&1) flags |= FF_NOSHADE;
if (param2&2) flags |= FF_DOUBLESHADOW;
if (param2&4) flags |= FF_FOG;
if (param2&8) flags |= FF_THINFLOOR;
if (param2&16) flags |= FF_UPPERTEXTURE;
if (param2&32) flags |= FF_LOWERTEXTURE;
if (param2&64) flags |= FF_ADDITIVETRANS|FF_TRANSLUCENT;
// if flooding is used the floor must be non-solid and is automatically made shootthrough and seethrough
if ((param2&128) && !(flags & FF_SOLID)) flags |= FF_FLOOD|FF_SEETHROUGH|FF_SHOOTTHROUGH;
if (param2&512) flags |= FF_FADEWALLS;
FTextureID tex = line->sidedef[0]->GetTexture(side_t::top);
if (!tex.Exists() && alpha<255)
{
alpha=clamp(-tex.GetIndex(), 0, 255);
}
if (alpha==0) flags&=~(FF_RENDERALL|FF_BOTHPLANES|FF_ALLSIDES);
else if (alpha!=255) flags|=FF_TRANSLUCENT;
}
P_Add3DFloor(ss, sec, line, flags, alpha);
}
// To be 100% safe this should be done even if the alpha by texture value isn't used.
if (!line->sidedef[0]->GetTexture(side_t::top).isValid())
line->sidedef[0]->SetTexture(side_t::top, FNullTextureID());
return 1;
}
//==========================================================================
//
// P_PlayerOnSpecial3DFloor
// Checks to see if a player is standing on or is inside a 3D floor (water)
// and applies any specials..
//
//==========================================================================
void P_PlayerOnSpecial3DFloor(player_t* player)
{
sector_t * sector = player->mo->Sector;
for(unsigned i=0;i<sector->e->XFloor.ffloors.Size();i++)
{
F3DFloor* rover=sector->e->XFloor.ffloors[i];
if (!(rover->flags & FF_EXISTS)) continue;
if (rover->flags & FF_FIX) continue;
// Check the 3D floor's type...
if(rover->flags & FF_SOLID)
{
// Player must be on top of the floor to be affected...
if(player->mo->z != rover->top.plane->ZatPoint(player->mo->x, player->mo->y)) continue;
}
else
{
//Water and DEATH FOG!!! heh
if (player->mo->z > rover->top.plane->ZatPoint(player->mo->x, player->mo->y) ||
(player->mo->z + player->mo->height) < rover->bottom.plane->ZatPoint(player->mo->x, player->mo->y))
continue;
}
if (rover->model->special || rover->model->damage) P_PlayerInSpecialSector(player, rover->model);
break;
}
}
//==========================================================================
//
// P_CheckFor3DFloorHit
// Checks whether the player's feet touch a solid 3D floor in the sector
//
//==========================================================================
bool P_CheckFor3DFloorHit(AActor * mo)
{
sector_t * sector = mo->Sector;
if ((mo->player && (mo->player->cheats & CF_PREDICTING))) return false;
for(unsigned i=0;i<sector->e->XFloor.ffloors.Size();i++)
{
F3DFloor* rover=sector->e->XFloor.ffloors[i];
if (!(rover->flags & FF_EXISTS)) continue;
if(rover->flags & FF_SOLID && rover->model->SecActTarget)
{
if(mo->floorz == rover->top.plane->ZatPoint(mo->x, mo->y))
{
rover->model->SecActTarget->TriggerAction (mo, SECSPAC_HitFloor);
return true;
}
}
}
return false;
}
//==========================================================================
//
// P_CheckFor3DCeilingHit
// Checks whether the player's head touches a solid 3D floor in the sector
//
//==========================================================================
bool P_CheckFor3DCeilingHit(AActor * mo)
{
sector_t * sector = mo->Sector;
if ((mo->player && (mo->player->cheats & CF_PREDICTING))) return false;
for(unsigned i=0;i<sector->e->XFloor.ffloors.Size();i++)
{
F3DFloor* rover=sector->e->XFloor.ffloors[i];
if (!(rover->flags & FF_EXISTS)) continue;
if(rover->flags & FF_SOLID && rover->model->SecActTarget)
{
if(mo->ceilingz == rover->bottom.plane->ZatPoint(mo->x, mo->y))
{
rover->model->SecActTarget->TriggerAction (mo, SECSPAC_HitCeiling);
return true;
}
}
}
return false;
}
//==========================================================================
//
// P_Recalculate3DFloors
//
// This function sorts the ffloors by height and creates the lightlists
// that the given sector uses to light floors/ceilings/walls according to the 3D floors.
//
//==========================================================================
void P_Recalculate3DFloors(sector_t * sector)
{
F3DFloor * rover;
F3DFloor * pick;
unsigned pickindex;
F3DFloor * clipped=NULL;
fixed_t clipped_top;
fixed_t clipped_bottom=0;
fixed_t maxheight, minheight;
unsigned i, j;
lightlist_t newlight;
TArray<F3DFloor*> & ffloors=sector->e->XFloor.ffloors;
TArray<lightlist_t> & lightlist = sector->e->XFloor.lightlist;
// Sort the floors top to bottom for quicker access here and later
// Translucent and swimmable floors are split if they overlap with solid ones.
if (ffloors.Size()>1)
{
TArray<F3DFloor*> oldlist;
oldlist = ffloors;
ffloors.Clear();
// first delete the old dynamic stuff
for(i=0;i<oldlist.Size();i++)
{
F3DFloor * rover=oldlist[i];
if (rover->flags&FF_DYNAMIC)
{
delete rover;
oldlist.Delete(i);
i--;
continue;
}
if (rover->flags&FF_CLIPPED)
{
rover->flags&=~FF_CLIPPED;
rover->flags|=FF_EXISTS;
}
}
while (oldlist.Size())
{
pick=oldlist[0];
fixed_t height=pick->top.plane->ZatPoint(CenterSpot(sector));
// find highest starting ffloor - intersections are not supported!
pickindex=0;
for (j=1;j<oldlist.Size();j++)
{
fixed_t h2=oldlist[j]->top.plane->ZatPoint(CenterSpot(sector));
if (h2>height)
{
pick=oldlist[j];
pickindex=j;
height=h2;
}
}
oldlist.Delete(pickindex);
if (pick->flags & FF_THISINSIDE)
{
// These have the floor higher than the ceiling and cannot be processed
// by the clipping code below.
ffloors.Push(pick);
}
else if (pick->flags&(FF_SWIMMABLE|FF_TRANSLUCENT) && pick->flags&FF_EXISTS)
{
clipped=pick;
clipped_top=height;
clipped_bottom=pick->bottom.plane->ZatPoint(CenterSpot(sector));
ffloors.Push(pick);
}
else if (clipped && clipped_bottom<height)
{
// translucent floor above must be clipped to this one!
F3DFloor * dyn=new F3DFloor;
*dyn=*clipped;
clipped->flags|=FF_CLIPPED;
clipped->flags&=~FF_EXISTS;
dyn->flags|=FF_DYNAMIC;
dyn->bottom=pick->top;
ffloors.Push(dyn);
ffloors.Push(pick);
fixed_t pick_bottom=pick->bottom.plane->ZatPoint(CenterSpot(sector));
if (pick_bottom<=clipped_bottom)
{
clipped=NULL;
}
else
{
// the translucent part extends below the clipper
dyn=new F3DFloor;
*dyn=*clipped;
dyn->flags|=FF_DYNAMIC|FF_EXISTS;
dyn->top=pick->bottom;
ffloors.Push(dyn);
}
}
else
{
clipped=NULL;
ffloors.Push(pick);
}
}
}
// having the floors sorted makes this routine significantly simpler
// Only some overlapping cases with FF_DOUBLESHADOW might create anomalies
// but these are clearly undefined.
if(ffloors.Size())
{
lightlist.Resize(1);
lightlist[0].plane = sector->ceilingplane;
lightlist[0].p_lightlevel = &sector->lightlevel;
lightlist[0].caster = NULL;
lightlist[0].lightsource = NULL;
lightlist[0].extra_colormap = sector->ColorMap;
lightlist[0].blend = 0;
lightlist[0].flags = 0;
maxheight = sector->CenterCeiling();
minheight = sector->CenterFloor();
for(i = 0; i < ffloors.Size(); i++)
{
rover=ffloors[i];
if ( !(rover->flags & FF_EXISTS) || rover->flags & FF_NOSHADE )
continue;
fixed_t ff_top=rover->top.plane->ZatPoint(CenterSpot(sector));
if (ff_top < minheight) break; // reached the floor
if (ff_top < maxheight)
{
newlight.plane = *rover->top.plane;
newlight.p_lightlevel = rover->toplightlevel;
newlight.caster = rover;
newlight.lightsource = rover;
newlight.extra_colormap = rover->GetColormap();
newlight.blend = rover->GetBlend();
newlight.flags = rover->flags;
lightlist.Push(newlight);
}
else if (i==0)
{
fixed_t ff_bottom=rover->bottom.plane->ZatPoint(CenterSpot(sector));
if (ff_bottom<maxheight)
{
// this segment begins over the ceiling and extends beyond it
lightlist[0].p_lightlevel = rover->toplightlevel;
lightlist[0].caster = rover;
lightlist[0].lightsource = rover;
lightlist[0].extra_colormap = rover->GetColormap();
lightlist[0].blend = rover->GetBlend();
lightlist[0].flags = rover->flags;
}
}
if (rover->flags&FF_DOUBLESHADOW)
{
fixed_t ff_bottom=rover->bottom.plane->ZatPoint(CenterSpot(sector));
if(ff_bottom < maxheight && ff_bottom>minheight)
{
newlight.caster = rover;
newlight.plane = *rover->bottom.plane;
if (lightlist.Size()>1)
{
newlight.lightsource = lightlist[lightlist.Size()-2].lightsource;
newlight.p_lightlevel = lightlist[lightlist.Size()-2].p_lightlevel;
newlight.extra_colormap = lightlist[lightlist.Size()-2].extra_colormap;
newlight.blend = lightlist[lightlist.Size()-2].blend;
}
else
{
newlight.lightsource = NULL;
newlight.p_lightlevel = &sector->lightlevel;
newlight.extra_colormap = sector->ColorMap;
newlight.blend = 0;
}
newlight.flags = rover->flags;
lightlist.Push(newlight);
}
}
}
}
}
//==========================================================================
//
// recalculates 3D floors for all attached sectors
//
//==========================================================================
void P_RecalculateAttached3DFloors(sector_t * sec)
{
extsector_t::xfloor &x = sec->e->XFloor;
for(unsigned int i=0; i<x.attached.Size(); i++)
{
P_Recalculate3DFloors(x.attached[i]);
}
P_Recalculate3DFloors(sec);
}
//==========================================================================
//
// recalculates light lists for this sector
//
//==========================================================================
void P_RecalculateLights(sector_t *sector)
{
TArray<lightlist_t> &lightlist = sector->e->XFloor.lightlist;
for(unsigned i = 0; i < lightlist.Size(); i++)
{
lightlist_t *ll = &lightlist[i];
if (ll->lightsource != NULL)
{
ll->lightsource->UpdateColormap(ll->extra_colormap);
ll->blend = ll->lightsource->GetBlend();
}
else
{
ll->extra_colormap = sector->ColorMap;
ll->blend = 0;
}
}
}
//==========================================================================
//
// recalculates light lists for all attached sectors
//
//==========================================================================
void P_RecalculateAttachedLights(sector_t *sector)
{
extsector_t::xfloor &x = sector->e->XFloor;
for(unsigned int i=0; i<x.attached.Size(); i++)
{
P_RecalculateLights(x.attached[i]);
}
P_RecalculateLights(sector);
}
//==========================================================================
//
//
//
//==========================================================================
lightlist_t * P_GetPlaneLight(sector_t * sector, secplane_t * plane, bool underside)
{
unsigned i;
TArray<lightlist_t> &lightlist = sector->e->XFloor.lightlist;
fixed_t planeheight=plane->ZatPoint(CenterSpot(sector));
if(underside) planeheight--;
for(i = 1; i < lightlist.Size(); i++)
if (lightlist[i].plane.ZatPoint(CenterSpot(sector)) <= planeheight)
return &lightlist[i - 1];
return &lightlist[lightlist.Size() - 1];
}
//==========================================================================
//
// Extended P_LineOpening
//
//==========================================================================
void P_LineOpening_XFloors (FLineOpening &open, AActor * thing, const line_t *linedef,
fixed_t x, fixed_t y, fixed_t refx, fixed_t refy, bool restrict)
{
if(thing)
{
fixed_t thingbot, thingtop;
thingbot = thing->z;
thingtop = thingbot + (thing->height==0? 1:thing->height);
extsector_t::xfloor *xf[2] = {&linedef->frontsector->e->XFloor, &linedef->backsector->e->XFloor};
// Check for 3D-floors in the sector (mostly identical to what Legacy does here)
if(xf[0]->ffloors.Size() || xf[1]->ffloors.Size())
{
fixed_t lowestceiling = open.top;
fixed_t highestfloor = open.bottom;
fixed_t lowestfloor[2] = {
linedef->frontsector->floorplane.ZatPoint(x, y),
linedef->backsector->floorplane.ZatPoint(x, y) };
FTextureID highestfloorpic;
FTextureID lowestceilingpic;
highestfloorpic.SetInvalid();
lowestceilingpic.SetInvalid();
for(int j=0;j<2;j++)
{
for(unsigned i=0;i<xf[j]->ffloors.Size();i++)
{
F3DFloor *rover = xf[j]->ffloors[i];
if (!(rover->flags & FF_EXISTS)) continue;
if (!(rover->flags & FF_SOLID)) continue;
fixed_t ff_bottom=rover->bottom.plane->ZatPoint(x, y);
fixed_t ff_top=rover->top.plane->ZatPoint(x, y);
fixed_t delta1 = abs(thingbot - ((ff_bottom + ff_top) / 2));
fixed_t delta2 = abs(thingtop - ((ff_bottom + ff_top) / 2));
if(ff_bottom < lowestceiling && delta1 >= delta2)
{
lowestceiling = ff_bottom;
lowestceilingpic = *rover->bottom.texture;
}
if(ff_top > highestfloor && delta1 < delta2 && (!restrict || thing->z >= ff_top))
{
highestfloor = ff_top;
highestfloorpic = *rover->top.texture;
}
if(ff_top > lowestfloor[j] && ff_top <= thing->z + thing->MaxStepHeight) lowestfloor[j] = ff_top;
}
}
if(highestfloor > open.bottom)
{
open.bottom = highestfloor;
open.floorpic = highestfloorpic;
}
if(lowestceiling < open.top)
{
open.top = lowestceiling;
open.ceilingpic = lowestceilingpic;
}
open.lowfloor = MIN(lowestfloor[0], lowestfloor[1]);
}
}
}
//==========================================================================
//
// Spawns 3D floors
//
//==========================================================================
void P_Spawn3DFloors (void)
{
static int flagvals[] = {128+512, 2+512, 512};
int i;
line_t * line;
for (i=0,line=lines;i<numlines;i++,line++)
{
switch(line->special)
{
case ExtraFloor_LightOnly:
// Note: I am spawning both this and ZDoom's ExtraLight data
// I don't want to mess with both at the same time during rendering
// so inserting this into the 3D-floor table as well seemed to be
// the best option.
//
// This does not yet handle case 0 properly!
if (line->args[1] < 0 || line->args[1] > 2) line->args[1] = 0;
P_Set3DFloor(line, 3, flagvals[line->args[1]], 0);
break;
case Sector_Set3DFloor:
// The flag high-byte/line id is only needed in Hexen format.
// UDMF can set both of these parameters without any restriction of the usable values.
// In Doom format the translators can take full integers for the tag and the line ID always is the same as the tag.
if (level.maptype == MAPTYPE_HEXEN)
{
if (line->args[1]&8)
{
line->id = line->args[4];
}
else
{
line->args[0]+=256*line->args[4];
line->args[4]=0;
}
}
P_Set3DFloor(line, line->args[1]&~8, line->args[2], line->args[3]);
break;
default:
continue;
}
line->special=0;
line->args[0] = line->args[1] = line->args[2] = line->args[3] = line->args[4] = 0;
}
// kg3D - do it in software
for (i = 0; i < numsectors; i++)
{
P_Recalculate3DFloors(&sectors[i]);
}
}
//==========================================================================
//
// Returns a 3D floorplane appropriate for the given coordinates
//
//==========================================================================
secplane_t P_FindFloorPlane(sector_t * sector, fixed_t x, fixed_t y, fixed_t z)
{
secplane_t retplane = sector->floorplane;
if (sector->e) // apparently this can be called when the data is already gone
{
for(unsigned int i=0;i<sector->e->XFloor.ffloors.Size();i++)
{
F3DFloor * rover= sector->e->XFloor.ffloors[i];
if(!(rover->flags & FF_SOLID) || !(rover->flags & FF_EXISTS)) continue;
if (rover->top.plane->ZatPoint(x, y) == z)
{
retplane = *rover->top.plane;
if (retplane.c<0) retplane.FlipVert();
break;
}
}
}
return retplane;
}
//==========================================================================
//
// Gives the index to an extra floor above or below the given location.
// -1 means normal floor or ceiling
//
//==========================================================================
int P_Find3DFloor(sector_t * sec, fixed_t x, fixed_t y, fixed_t z, bool above, bool floor, fixed_t &cmpz)
{
// If no sector given, find the one appropriate
if (sec == NULL)
sec = R_PointInSubsector(x, y)->sector;
// Above normal ceiling
cmpz = sec->ceilingplane.ZatPoint(x, y);
if (z >= cmpz)
return -1;
// Below normal floor
cmpz = sec->floorplane.ZatPoint(x, y);
if (z <= cmpz)
return -1;
// Looking through planes from top to bottom
for (int i = 0; i < (signed)sec->e->XFloor.ffloors.Size(); ++i)
{
F3DFloor *rover = sec->e->XFloor.ffloors[i];
// We are only interested in solid 3D floors here
if(!(rover->flags & FF_SOLID) || !(rover->flags & FF_EXISTS)) continue;
if (above)
{
// z is above that floor
if (floor && (z >= (cmpz = rover->top.plane->ZatPoint(x, y))))
return i - 1;
// z is above that ceiling
if (z >= (cmpz = rover->bottom.plane->ZatPoint(x, y)))
return i - 1;
}
else // below
{
// z is below that ceiling
if (!floor && (z <= (cmpz = rover->bottom.plane->ZatPoint(x, y))))
return i;
// z is below that floor
if (z <= (cmpz = rover->top.plane->ZatPoint(x, y)))
return i;
}
}
// Failsafe
return -1;
}
#endif
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