/
sector.cpp
1173 lines (1014 loc) · 34.9 KB
/
sector.cpp
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/** @file sector.h World map sector.
*
* @authors Copyright © 2003-2013 Jaakko Keränen <jaakko.keranen@iki.fi>
* @authors Copyright © 2006-2013 Daniel Swanson <danij@dengine.net>
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 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 General
* Public License for more details. You should have received a copy of the GNU
* General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA</small>
*/
#include <QSet>
#include <QtAlgorithms>
#include <de/Log>
#include "dd_main.h" // App_Materials(), verbose
#include "Face"
#include "BspLeaf"
#include "Line"
#include "Plane"
#include "world/map.h"
#include "world/maputil.h"
#include "world/p_object.h"
#include "world/p_players.h"
#ifdef __CLIENT__
# include "render/rend_main.h" // useBias
#endif
#include "world/sector.h"
using namespace de;
void Sector::Cluster::remapVisPlanes()
{
// By default both planes are mapped to the parent sector.
_mappedVisFloor = this;
_mappedVisCeiling = this;
// Should we permanently link this cluster to another?
Cluster *exteriorCluster = 0;
foreach(BspLeaf *leaf, _bspLeafs)
{
HEdge *base = leaf->poly().hedge();
HEdge *hedge = base;
do
{
if(hedge->mapElement())
{
if(hedge->mapElement()->as<Line::Side::Segment>()->line().isSelfReferencing())
{
if(!exteriorCluster && hedge->twin().hasFace())
{
BspLeaf *otherLeaf = hedge->twin().face().mapElement()->as<BspLeaf>();
if(otherLeaf->hasCluster())
{
Cluster *otherCluster = &otherLeaf->cluster();
if(otherCluster != this)
{
if(!_allSelfRefBoundary && otherCluster->_allSelfRefBoundary)
return;
// Remember the exterior cluster.
exteriorCluster = otherCluster;
}
}
}
}
// Abort if any map line lacks a back geometry.
if(!hedge->twin().hasFace())
return;
}
} while((hedge = &hedge->next()) != base);
}
if(exteriorCluster)
{
// Ensure we don't produce a cyclic dependency...
Sector *finalSector = &exteriorCluster->visPlane(Floor).sector();
if(finalSector != §or())
{
_mappedVisFloor = exteriorCluster;
_mappedVisCeiling = exteriorCluster;
}
}
}
Sector &Sector::Cluster::sector() const
{
return *_bspLeafs.first()->parent().as<Sector>();
}
Plane &Sector::Cluster::plane(int planeIndex) const
{
// Physical planes are never mapped.
return sector().plane(planeIndex);
}
Plane &Sector::Cluster::visPlane(int planeIndex) const
{
if(planeIndex >= Floor && planeIndex <= Ceiling)
{
// Time to remap the planes?
if(!_mappedVisFloor)
{
const_cast<Sector::Cluster *>(this)->remapVisPlanes();
}
/// @todo Cache this result.
Cluster *mappedCluster = (planeIndex == Ceiling? _mappedVisCeiling : _mappedVisFloor);
if(mappedCluster != this)
{
return mappedCluster->visPlane(planeIndex);
}
}
// Not mapped.
return sector().plane(planeIndex);
}
AABoxd const &Sector::Cluster::aaBox() const
{
// If the cluster is comprised of a single BSP leaf we can use the bounding
// box of the leaf's geometry directly.
if(_bspLeafs.count() == 1)
{
return _bspLeafs.first()->poly().aaBox();
}
// Time to determine bounds?
if(_aaBox.isNull())
{
// Unite the geometry bounding boxes of all BSP leafs in the cluster.
foreach(BspLeaf *leaf, _bspLeafs)
{
AABoxd const &leafAABox = leaf->poly().aaBox();
if(!_aaBox.isNull())
{
V2d_UniteBox((*_aaBox).arvec2, leafAABox.arvec2);
}
else
{
const_cast<Sector::Cluster *>(this)->_aaBox.reset(new AABoxd(leafAABox));
}
}
}
return *_aaBox;
}
Sector::Cluster::BspLeafs const &Sector::Cluster::bspLeafs() const
{
return _bspLeafs;
}
#ifdef __CLIENT__
typedef QSet<BspLeaf *> ReverbBspLeafs;
#endif
DENG2_PIMPL(Sector),
DENG2_OBSERVES(Plane, HeightChange)
{
/// Bounding box for the whole sector (all clusters).
AABoxd aaBox;
bool needAABoxUpdate; ///< @c true= marked for update.
SoundEmitter emitter; ///< Head of the sound emitter chain.
Planes planes; ///< All owned planes.
Sides sides; ///< All referencing line sides (not owned).
Clusters clusters; ///< All owned BSP leaf clusters.
float lightLevel; ///< Ambient light level.
Vector3f lightColor; ///< Ambient light color.
int validCount;
#ifdef __CLIENT__
/// Rough approximation of sector area (map units squared).
coord_t roughArea;
bool needRoughAreaUpdate; /// @c true= marked for update.
/// Ambient lighting data for the bias lighting model.
LightGridData lightGridData;
/// All BSP leafs which effect environmental audio characteristics.
ReverbBspLeafs reverbBspLeafs;
/// Final environmental audio characteristics.
AudioEnvironmentFactors reverb;
bool needReverbUpdate; ///< @c true= marked for update.
bool visible; ///< @c true= marked as visible for the current frame.
#endif
Instance(Public *i, float lightLevel, Vector3f const &lightColor)
: Base(i),
needAABoxUpdate(false), // No BSP leafs thus no geometry.
lightLevel(lightLevel),
lightColor(lightColor),
validCount(0)
#ifdef __CLIENT__
,roughArea(0),
needRoughAreaUpdate(false), // No BSP leafs thus zero area.
needReverbUpdate(true),
visible(false)
#endif
{
zap(emitter);
#ifdef __CLIENT__
zap(lightGridData);
zap(reverb);
#endif
}
~Instance()
{
qDeleteAll(clusters);
qDeleteAll(planes);
}
void notifyLightLevelChanged(float oldLightLevel)
{
DENG2_FOR_PUBLIC_AUDIENCE(LightLevelChange, i)
{
i->sectorLightLevelChanged(self, oldLightLevel);
}
}
void notifyLightColorChanged(Vector3f const &oldLightColor, int changedComponents)
{
DENG2_FOR_PUBLIC_AUDIENCE(LightColorChange, i)
{
i->sectorLightColorChanged(self, oldLightColor, changedComponents);
}
}
void notifyLightColorChanged(Vector3f const &oldLightColor)
{
// Predetermine which components have changed.
int changedComponents = 0;
for(int i = 0; i < 3; ++i)
{
if(!de::fequal(lightColor[i], oldLightColor[i]))
changedComponents |= (1 << i);
}
notifyLightColorChanged(oldLightColor, changedComponents);
}
/**
* Update the axis-aligned bounding box in the map coordinate space to
* encompass the geometry of all BSP leaf clusters of the sector.
*/
void updateAABox()
{
needAABoxUpdate = false;
aaBox.clear();
bool haveGeometry = false;
foreach(Cluster *cluster, clusters)
{
if(haveGeometry)
{
V2d_UniteBox(aaBox.arvec2, cluster->aaBox().arvec2);
}
else
{
aaBox = cluster->aaBox();
haveGeometry = true;
}
}
// The XY origin of our sound emitter can now be updated as the center
// point of the sector geometry is now known.
if(haveGeometry)
{
emitter.origin[VX] = (aaBox.minX + aaBox.maxX) / 2;
emitter.origin[VY] = (aaBox.minY + aaBox.maxY) / 2;
}
else
{
emitter.origin[VX] = emitter.origin[VY] = 0;
}
}
#ifdef __CLIENT__
void updateRoughArea()
{
needRoughAreaUpdate = false;
roughArea = 0;
foreach(Cluster *cluster, clusters)
{
AABoxd const &clusterAABox = cluster->aaBox();
roughArea += (clusterAABox.maxX - clusterAABox.minX) *
(clusterAABox.maxY - clusterAABox.minY);
}
}
void addReverbBspLeaf(BspLeaf *bspLeaf)
{
// Degenerate leafs never contribute.
if(!bspLeaf || !bspLeaf->isDegenerate())
return;
reverbBspLeafs.insert(bspLeaf);
}
static int addReverbBspLeafWorker(BspLeaf *bspLeaf, void *context)
{
static_cast<Instance *>(context)->addReverbBspLeaf(bspLeaf);
return false; // Continue iteration.
}
/**
* Recalculate environmental audio (reverb) for the sector.
*/
void updateReverb()
{
needReverbUpdate = false;
// Sectors with no referencing lines need no reverb.
if(sides.isEmpty())
return;
uint spaceVolume = int((self.ceiling().height() - self.floor().height()) * self.roughArea());
reverb[SRD_SPACE] = reverb[SRD_VOLUME] =
reverb[SRD_DECAY] = reverb[SRD_DAMPING] = 0;
foreach(BspLeaf *bspLeaf, reverbBspLeafs)
{
if(bspLeaf->updateReverb())
{
BspLeaf::AudioEnvironmentFactors const &leafReverb = bspLeaf->reverb();
reverb[SRD_SPACE] += leafReverb[SRD_SPACE];
reverb[SRD_VOLUME] += leafReverb[SRD_VOLUME] / 255.0f * leafReverb[SRD_SPACE];
reverb[SRD_DECAY] += leafReverb[SRD_DECAY] / 255.0f * leafReverb[SRD_SPACE];
reverb[SRD_DAMPING] += leafReverb[SRD_DAMPING] / 255.0f * leafReverb[SRD_SPACE];
}
}
float spaceScatter;
if(reverb[SRD_SPACE])
{
spaceScatter = spaceVolume / reverb[SRD_SPACE];
// These three are weighted by the space.
reverb[SRD_VOLUME] /= reverb[SRD_SPACE];
reverb[SRD_DECAY] /= reverb[SRD_SPACE];
reverb[SRD_DAMPING] /= reverb[SRD_SPACE];
}
else
{
spaceScatter = 0;
reverb[SRD_VOLUME] = .2f;
reverb[SRD_DECAY] = .4f;
reverb[SRD_DAMPING] = 1;
}
// If the space is scattered, the reverb effect lessens.
reverb[SRD_SPACE] /= (spaceScatter > .8 ? 10 : spaceScatter > .6 ? 4 : 1);
// Normalize the reverb space [0..1]
// 0= very small
// .99= very large
// 1.0= only for open areas (special case).
reverb[SRD_SPACE] /= 120e6;
if(reverb[SRD_SPACE] > .99)
reverb[SRD_SPACE] = .99f;
if(self.ceilingSurface().hasSkyMaskedMaterial() ||
self.floorSurface().hasSkyMaskedMaterial())
{
// An "open" sector.
// It can still be small, in which case; reverb is diminished a bit.
if(reverb[SRD_SPACE] > .5)
reverb[SRD_VOLUME] = 1; // Full volume.
else
reverb[SRD_VOLUME] = .5f; // Small, but still open.
reverb[SRD_SPACE] = 1;
}
else
{
// A "closed" sector.
// Large spaces have automatically a bit more audible reverb.
reverb[SRD_VOLUME] += reverb[SRD_SPACE] / 4;
}
if(reverb[SRD_VOLUME] > 1)
reverb[SRD_VOLUME] = 1;
}
#endif
// Observes Plane HeightChange.
void planeHeightChanged(Plane &plane, coord_t oldHeight)
{
DENG2_UNUSED(oldHeight);
// We are presently only interested in floor and/or ceiling height changes.
if(!(&plane == &self.floor() || &plane == &self.ceiling()))
return;
// Update the z-height origin of our sound emitter right away.
emitter.origin[VZ] = (self.floor().height() + self.ceiling().height()) / 2;
// Update the sound emitter origins for all dependent surfaces.
foreach(Line::Side *side, sides)
{
side->updateAllSoundEmitterOrigins();
side->back().updateAllSoundEmitterOrigins();
}
// Check if there are any camera players in this sector. If their height
// is now above the ceiling/below the floor they are now in the void.
for(int i = 0; i < DDMAXPLAYERS; ++i)
{
player_t *plr = &ddPlayers[i];
ddplayer_t *ddpl = &plr->shared;
if(!ddpl->inGame || !ddpl->mo || !ddpl->mo->bspLeaf)
continue;
if((ddpl->flags & DDPF_CAMERA) && ddpl->mo->bspLeaf->sectorPtr() == &self &&
(ddpl->mo->origin[VZ] > self.ceiling().height() - 4 ||
ddpl->mo->origin[VZ] < self.floor().height()))
{
ddpl->inVoid = true;
}
}
#ifdef __CLIENT__
// A plane move means we must re-apply missing material fixes.
/// @todo optimize: Defer until actually necessary.
self.fixMissingMaterialsForSides();
// We'll need to recalculate environmental audio characteristics.
needReverbUpdate = true;
if(!ddMapSetup && useBias)
{
// Inform bias surfaces of changed geometry.
foreach(Cluster *cluster, clusters)
foreach(BspLeaf *bspLeaf, cluster->bspLeafs())
{
bspLeaf->updateBiasAfterGeometryMove(plane.indexInSector());
}
}
#endif // __CLIENT__
}
};
Sector::Sector(float lightLevel, Vector3f const &lightColor)
: MapElement(DMU_SECTOR), d(new Instance(this, lightLevel, lightColor))
{
_mobjList = 0;
}
float Sector::lightLevel() const
{
return d->lightLevel;
}
void Sector::setLightLevel(float newLightLevel)
{
newLightLevel = de::clamp(0.f, newLightLevel, 1.f);
if(!de::fequal(d->lightLevel, newLightLevel))
{
float oldLightLevel = d->lightLevel;
d->lightLevel = newLightLevel;
// Notify interested parties of the change.
d->notifyLightLevelChanged(oldLightLevel);
}
}
Vector3f const &Sector::lightColor() const
{
return d->lightColor;
}
void Sector::setLightColor(Vector3f const &newLightColor)
{
Vector3f newColorClamped = Vector3f(de::clamp(0.f, newLightColor.x, 1.f),
de::clamp(0.f, newLightColor.y, 1.f),
de::clamp(0.f, newLightColor.z, 1.f));
if(d->lightColor != newColorClamped)
{
Vector3f oldLightColor = d->lightColor;
d->lightColor = newColorClamped;
// Notify interested parties of the change.
d->notifyLightColorChanged(oldLightColor);
}
}
void Sector::setLightColorComponent(int component, float newStrength)
{
DENG_ASSERT(component >= 0 && component < 3);
newStrength = de::clamp(0.f, newStrength, 1.f);
if(!de::fequal(d->lightColor[component], newStrength))
{
Vector3f oldLightColor = d->lightColor;
d->lightColor[component] = newStrength;
// Notify interested parties of the change.
d->notifyLightColorChanged(oldLightColor, (1 << component));
}
}
struct mobj_s *Sector::firstMobj() const
{
return _mobjList;
}
SoundEmitter &Sector::soundEmitter()
{
// The origin is determined by the axis-aligned bounding box, so perform
// any scheduled update now.
if(d->needAABoxUpdate)
{
d->updateAABox();
}
return d->emitter;
}
SoundEmitter const &Sector::soundEmitter() const
{
return const_cast<SoundEmitter const &>(const_cast<Sector &>(*this).soundEmitter());
}
int Sector::validCount() const
{
return d->validCount;
}
void Sector::setValidCount(int newValidCount)
{
d->validCount = newValidCount;
}
Plane &Sector::plane(int planeIndex)
{
if(planeIndex >= 0 && planeIndex < d->planes.count())
{
return *d->planes[planeIndex];
}
/// @throw MissingPlaneError The referenced plane does not exist.
throw MissingPlaneError("Sector::plane", QString("Missing plane %1").arg(planeIndex));
}
Plane const &Sector::plane(int planeIndex) const
{
return const_cast<Plane const &>(const_cast<Sector &>(*this).plane(planeIndex));
}
Sector::Sides const &Sector::sides() const
{
return d->sides;
}
void Sector::buildSides()
{
d->sides.clear();
#ifdef DENG2_QT_4_7_OR_NEWER
int count = 0;
foreach(Line *line, map().lines())
{
if(line->frontSectorPtr() == this || line->backSectorPtr() == this)
++count;
}
if(!count) return;
d->sides.reserve(count);
#endif
foreach(Line *line, map().lines())
{
if(line->frontSectorPtr() == this)
{
// Ownership of the side is not given to the sector.
d->sides.append(&line->front());
}
else if(line->backSectorPtr() == this)
{
// Ownership of the side is not given to the sector.
d->sides.append(&line->back());
}
}
}
Plane *Sector::addPlane(Vector3f const &normal, coord_t height)
{
Plane *plane = new Plane(*this, normal, height);
// We want notification of height changes so that we can relay and/or update
// other components (e.g., BSP leafs) accordingly.
plane->audienceForHeightChange += d;
plane->setIndexInSector(d->planes.count());
d->planes.append(plane);
// Once both floor and ceiling are known we can determine the z-height origin
// of our sound emitter.
/// @todo fixme: Assume planes are defined in order.
if(planeCount() == 2)
{
d->emitter.origin[VZ] = (floor().height() + ceiling().height()) / 2;
}
return plane;
}
Sector::Planes const &Sector::planes() const
{
return d->planes;
}
bool Sector::hasSkyMaskedPlane() const
{
foreach(Plane *plane, d->planes)
{
if(plane->surface().hasSkyMaskedMaterial())
return true;
}
return false;
}
Sector::Clusters const &Sector::clusters() const
{
return d->clusters;
}
static HEdge *findSharedEdge(Sector::Cluster const &a, Sector::Cluster const &b)
{
// Comparing internal edges of the cluster could be avoided by recording the
// boundary representation (B-rep) of the cluster. However, it remains to be
// seen whether this is actually worthwhile (wrt update perf).
foreach(BspLeaf *leaf, a.bspLeafs())
{
HEdge *baseHEdge = leaf->poly().hedge();
HEdge *hedge = baseHEdge;
do
{
if(hedge->twin().hasFace())
if(BspLeaf *otherLeaf = hedge->twin().face().mapElement()->as<BspLeaf>())
{
if(otherLeaf->hasCluster() && &otherLeaf->cluster() == &b)
return hedge;
}
} while((hedge = &hedge->next()) != baseHEdge);
}
return 0; // None.
}
void Sector::buildClusters()
{
d->clusters.clear();
// We'll need to recalculate the axis-aligned bounding box.
d->needAABoxUpdate = true;
#ifdef __CLIENT__
// ...and the rough area approximation.
d->needRoughAreaUpdate = true;
#endif
/*
* Separate the BSP leafs into edge-adjacency clusters. We'll do this by
* starting with a cluster per BSP leaf and then keep merging until no more
* shared edges are found.
*/
foreach(BspLeaf *bspLeaf, map().bspLeafs())
{
if(bspLeaf->parent().as<Sector>() != this)
continue;
// Degenerate BSP leafs are excluded (no geometry).
if(bspLeaf->isDegenerate())
continue;
Cluster *cluster = new Cluster;
cluster->_allSelfRefBoundary = false;
cluster->_mappedVisFloor = cluster->_mappedVisCeiling = 0;
d->clusters.append(cluster);
// Ownership of the BSP leaf is not given to the cluster.
cluster->_bspLeafs.append(bspLeaf);
// Attribute the BSP leaf to the cluster.
bspLeaf->setCluster(cluster);
}
if(d->clusters.isEmpty()) return;
// Merge clusters whose BSP leafs share a common edge.
while(d->clusters.count() > 1)
{
bool didMerge = false;
for(int i = 0; i < d->clusters.count(); ++i)
for(int k = 0; k < d->clusters.count(); ++k)
{
if(i == k)
continue;
if(findSharedEdge(*d->clusters[i], *d->clusters[k]))
{
// Merge k into i.
foreach(BspLeaf *bspLeaf, d->clusters[k]->_bspLeafs)
{
bspLeaf->setCluster(d->clusters[i]);
}
d->clusters[i]->_bspLeafs.append(d->clusters[k]->_bspLeafs);
d->clusters.removeAt(k);
// Compare the next pair.
if(i >= k) i -= 1;
k -= 1;
// We'll need to repeat in any case.
didMerge = true;
}
}
if(!didMerge) break;
}
// Clustering complete.
// Classify clusters.
foreach(Cluster *cluster, d->clusters)
{
cluster->_allSelfRefBoundary = true;
foreach(BspLeaf *bspLeaf, cluster->_bspLeafs)
{
HEdge *base = bspLeaf->poly().hedge();
HEdge *hedge = base;
do
{
if(hedge->twin().hasFace())
{
BspLeaf *backLeaf = hedge->twin().face().mapElement()->as<BspLeaf>();
if(hedge->mapElement() && backLeaf->hasCluster() && &backLeaf->cluster() != cluster)
{
if(!hedge->mapElement()->as<Line::Side::Segment>()->line().isSelfReferencing())
{
cluster->_allSelfRefBoundary = false;
goto nextCluster;
}
}
}
} while((hedge = &hedge->next()) != base);
}
nextCluster:;
}
}
AABoxd const &Sector::aaBox() const
{
// Perform any scheduled update now.
if(d->needAABoxUpdate)
{
d->updateAABox();
}
return d->aaBox;
}
static void linkSoundEmitter(SoundEmitter &root, SoundEmitter &newEmitter)
{
// The sector's base is always root of the chain, so link the other after it.
newEmitter.thinker.prev = &root.thinker;
newEmitter.thinker.next = root.thinker.next;
if(newEmitter.thinker.next)
newEmitter.thinker.next->prev = &newEmitter.thinker;
root.thinker.next = &newEmitter.thinker;
}
void Sector::chainSoundEmitters()
{
SoundEmitter &root = d->emitter;
// Clear the root of the emitter chain.
root.thinker.next = root.thinker.prev = 0;
// Link plane surface emitters:
foreach(Plane *plane, d->planes)
{
linkSoundEmitter(root, plane->soundEmitter());
}
// Link wall surface emitters:
foreach(Line::Side *side, d->sides)
{
if(side->hasSections())
{
linkSoundEmitter(root, side->middleSoundEmitter());
linkSoundEmitter(root, side->bottomSoundEmitter());
linkSoundEmitter(root, side->topSoundEmitter());
}
if(side->line().isSelfReferencing() && side->back().hasSections())
{
Line::Side &back = side->back();
linkSoundEmitter(root, back.middleSoundEmitter());
linkSoundEmitter(root, back.bottomSoundEmitter());
linkSoundEmitter(root, back.topSoundEmitter());
}
}
}
bool Sector::pointInside(Vector2d const &point) const
{
BspLeaf const &bspLeaf = map().bspLeafAt(point);
return bspLeaf.sectorPtr() == this && bspLeaf.pointInside(point);
}
#ifdef __CLIENT__
Sector::LightGridData &Sector::lightGridData()
{
return d->lightGridData;
}
/**
* Determine the BSP leafs which contribute to the sector's environmental audio
* characteristics. Given that BSP leafs do not change shape (on the XY plane,
* that is), they do not move and are not created/destroyed once the map has been
* loaded; this step can be pre-processed.
*/
void Sector::initReverb()
{
d->reverbBspLeafs.clear();
// A sector with no referencing line needs no reverb.
if(!sideCount()) return;
AABoxd affectionBounds = aaBox();
affectionBounds.minX -= 128;
affectionBounds.minY -= 128;
affectionBounds.maxX += 128;
affectionBounds.maxY += 128;
// LOG_DEBUG("Finding reverb BSP leafs for sector %u (min:%s max:%s)")
// << map().sectorIndex(this)
// << Vector2d(affectionBounds.min).asText()
// << Vector2d(affectionBounds.max).asText();
// Link all non-degenerate BspLeafs whose axis-aligned bounding box intersects
// with the affection bounds to the reverb set.
map().bspLeafsBoxIterator(affectionBounds, 0, Instance::addReverbBspLeafWorker, d);
// We still need to update the final characteristics.
d->needReverbUpdate = true;
}
void Sector::markReverbDirty(bool yes)
{
d->needReverbUpdate = yes;
}
AudioEnvironmentFactors const &Sector::reverb() const
{
// Perform any scheduled update now.
if(d->needReverbUpdate)
{
d->updateReverb();
}
return d->reverb;
}
coord_t Sector::roughArea() const
{
// Perform any scheduled update now.
if(d->needRoughAreaUpdate)
{
d->updateRoughArea();
}
return d->roughArea;
}
bool Sector::isVisible() const
{
return d->visible;
}
void Sector::markVisible(bool yes)
{
d->visible = yes;
}
/**
* Given a side section, look at the neighbouring surfaces and pick the
* best choice of material used on those surfaces to be applied to "this"
* surface.
*
* Material on back neighbour plane has priority.
* Non-animated materials are preferred.
* Sky materials are ignored.
*/
static Material *chooseFixMaterial(Line::Side &side, int section)
{
Material *choice1 = 0, *choice2 = 0;
Sector *frontSec = side.sectorPtr();
Sector *backSec = side.back().sectorPtr();
if(backSec)
{
// Our first choice is a material in the other sector.
if(section == Line::Side::Bottom)
{
if(frontSec->floor().height() < backSec->floor().height())
{
choice1 = backSec->floorSurface().materialPtr();
}
}
else if(section == Line::Side::Top)
{
if(frontSec->ceiling().height() > backSec->ceiling().height())
{
choice1 = backSec->ceilingSurface().materialPtr();
}
}
// In the special case of sky mask on the back plane, our best
// choice is always this material.
if(choice1 && choice1->isSkyMasked())
{
return choice1;
}
}
else
{
// Our first choice is a material on an adjacent wall section.
// Try the left neighbor first.
Line *other = R_FindLineNeighbor(frontSec, &side.line(), side.line().vertexOwner(side.sideId()),
false /*next clockwise*/);
if(!other)
// Try the right neighbor.
other = R_FindLineNeighbor(frontSec, &side.line(), side.line().vertexOwner(side.sideId()^1),
true /*next anti-clockwise*/);
if(other)
{
if(!other->hasBackSector())
{
// Our choice is clear - the middle material.
choice1 = other->front().middle().materialPtr();
}
else
{
// Compare the relative heights to decide.
Line::Side &otherSide = other->side(&other->frontSector() == frontSec? Line::Front : Line::Back);
Sector &otherSec = other->side(&other->frontSector() == frontSec? Line::Back : Line::Front).sector();
if(otherSec.ceiling().height() <= frontSec->floor().height())
choice1 = otherSide.top().materialPtr();
else if(otherSec.floor().height() >= frontSec->ceiling().height())
choice1 = otherSide.bottom().materialPtr();
else if(otherSec.ceiling().height() < frontSec->ceiling().height())
choice1 = otherSide.top().materialPtr();
else if(otherSec.floor().height() > frontSec->floor().height())
choice1 = otherSide.bottom().materialPtr();
// else we'll settle for a plane material.
}
}
}
// Our second choice is a material from this sector.
choice2 = frontSec->planeSurface(section == Line::Side::Bottom? Sector::Floor : Sector::Ceiling).materialPtr();
// Prefer a non-animated, non-masked material.
if(choice1 && !choice1->isAnimated() && !choice1->isSkyMasked())
return choice1;
if(choice2 && !choice2->isAnimated() && !choice2->isSkyMasked())
return choice2;
// Prefer a non-masked material.
if(choice1 && !choice1->isSkyMasked())
return choice1;
if(choice2 && !choice2->isSkyMasked())
return choice2;
// At this point we'll accept anything if it means avoiding HOM.
if(choice1) return choice1;