/
sector.cpp
1326 lines (1151 loc) · 40.6 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 <QRect>
#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;
static QRectF qrectFromAABox(AABoxd const &aaBox)
{
return QRectF(QPointF(aaBox.minX, aaBox.maxY), QPointF(aaBox.maxX, aaBox.minY));
}
/**
* @todo Redesign the implementation to avoid recursion via visPlane().
*/
void Sector::Cluster::remapVisPlanes()
{
// By default both planes are mapped to the parent sector.
_mappedVisFloor = this;
_mappedVisCeiling = this;
// Should we permanently map planes to another cluster?
if(_flags & NeverMapped)
return;
forever
{
// Locate the next exterior cluster.
Cluster *exteriorCluster = 0;
foreach(BspLeaf *leaf, _bspLeafs)
{
HEdge *base = leaf->poly().hedge();
HEdge *hedge = base;
do
{
if(hedge->mapElement())
{
DENG_ASSERT(hedge->twin().hasFace());
if(hedge->mapElement()->as<LineSideSegment>().line().isSelfReferencing())
{
BspLeaf &backLeaf = hedge->twin().face().mapElement()->as<BspLeaf>();
if(backLeaf.hasCluster())
{
Cluster *otherCluster = &backLeaf.cluster();
if(otherCluster != this &&
otherCluster->_mappedVisFloor != this &&
!(!(_flags & AllSelfRef) && (otherCluster->_flags & AllSelfRef)))
{
// Remember the exterior cluster.
exteriorCluster = otherCluster;
}
}
}
}
} while((hedge = &hedge->next()) != base);
}
if(!exteriorCluster)
break; // Nothing to map to.
// Ensure we don't produce a cyclic dependency...
Sector *finalSector = &exteriorCluster->visPlane(Floor).sector();
if(finalSector == §or())
{
// Must share a boundary edge.
QRectF boundingRect = qrectFromAABox(aaBox());
if(boundingRect.contains(qrectFromAABox(exteriorCluster->aaBox())))
{
// The contained cluster will map to this. However, we may still
// need to map this one to another, so re-evaluate.
continue;
}
else
{
// This cluster is contained. Remove the mapping from exterior
// to this thereby forcing it to be re-evaluated (however next
// time a different cluster will be selected from the boundary).
exteriorCluster->_mappedVisFloor =
exteriorCluster->_mappedVisCeiling = 0;
}
}
// Setup the mapping and we're done.
_mappedVisFloor = exteriorCluster;
_mappedVisCeiling = exteriorCluster;
break;
}
// No permanent mapping?
if(_mappedVisFloor == this && !(_flags & AllSelfRef))
{
// Dynamic mapping may be needed for one or more planes.
Plane const §orFloor = sector().floor();
Plane const §orCeiling = sector().ceiling();
// The sector must have open space.
if(!(sectorCeiling.height() > sectorFloor.height()))
return;
// The plane must not use a sky-masked material.
bool missingAllBottom = !sectorFloor.surface().hasSkyMaskedMaterial();
bool missingAllTop = !sectorCeiling.surface().hasSkyMaskedMaterial();
if(!missingAllBottom && !missingAllTop)
return;
// Evaluate the boundary to determine if mapping is required.
Cluster *exteriorCluster = 0;
foreach(BspLeaf *leaf, _bspLeafs)
{
HEdge *base = leaf->poly().hedge();
HEdge *hedge = base;
do
{
if(hedge->mapElement())
{
DENG_ASSERT(hedge->twin().hasFace());
// Only consider non-selfref edges whose back face lies in
// another cluster.
LineSideSegment const &seg = hedge->mapElement()->as<LineSideSegment>();
if(!seg.line().isSelfReferencing())
{
BspLeaf const &backLeaf = hedge->twin().face().mapElement()->as<BspLeaf>();
if(backLeaf.hasCluster())
{
Cluster *otherCluster = &backLeaf.cluster();
if(otherCluster != this && otherCluster->_mappedVisFloor != this)
{
LineSide const &lineSide = seg.lineSide();
if(lineSide.bottom().hasMaterial() && !lineSide.bottom().hasFixMaterial())
missingAllBottom = false;
if(lineSide.top().hasMaterial() && !lineSide.top().hasFixMaterial())
missingAllTop = false;
if(!missingAllBottom && !missingAllTop)
return;
// Remember the exterior cluster.
exteriorCluster = otherCluster;
}
}
}
}
} while((hedge = &hedge->next()) != base);
}
if(exteriorCluster)
{
if(missingAllBottom && exteriorCluster->visPlane(Floor).height() > sectorFloor.height())
{
_mappedVisFloor = exteriorCluster;
}
if(missingAllTop && exteriorCluster->visPlane(Ceiling).height() < sectorCeiling.height())
{
_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)
#ifdef __CLIENT__
, DENG2_OBSERVES(Plane, HeightSmoothedChange)
#endif
{
/// 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;
}
/**
* To be called when the height changes to update the plotted decoration
* origins for surfaces whose material offset is dependant upon this.
*/
void markDependantSurfacesForDecorationUpdate()
{
if(ddMapSetup) return;
foreach(LineSide *side, self.sides())
{
if(side->hasSections())
{
side->middle().markAsNeedingDecorationUpdate();
side->bottom().markAsNeedingDecorationUpdate();
side->top().markAsNeedingDecorationUpdate();
}
if(side->back().hasSections())
{
LineSide &back = side->back();
back.middle().markAsNeedingDecorationUpdate();
back.bottom().markAsNeedingDecorationUpdate();
back.top().markAsNeedingDecorationUpdate();
}
}
}
#endif // __CLIENT__
// Observes Plane HeightChange.
void planeHeightChanged(Plane &plane, coord_t oldHeight)
{
DENG2_UNUSED(oldHeight);
// 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(LineSide *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());
}
}
markDependantSurfacesForDecorationUpdate();
#endif // __CLIENT__
}
#ifdef __CLIENT__
/// Observes Plane HeightSmoothedChange
void planeHeightSmoothedChanged(Plane &plane, coord_t oldHeight)
{
DENG2_UNUSED(oldHeight);
markDependantSurfacesForDecorationUpdate();
}
#endif
};
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);
plane->setIndexInSector(d->planes.count());
d->planes.append(plane);
if(plane->isSectorFloor() || plane->isSectorCeiling())
{
// We want notification of height changes so that we can relay and/or
// update other components (e.g., BSP leafs) accordingly.
plane->audienceForHeightChange += d;
#ifdef __CLIENT__
plane->audienceForHeightSmoothedChange += d;
#endif
}
// 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())
{
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 *leaf, map().bspLeafs())
{
if(&leaf->parent().as<Sector>() != this)
continue;
// Degenerate BSP leafs are excluded (no geometry).
if(leaf->isDegenerate())
continue;
Cluster *cluster = new Cluster;
cluster->_flags = 0;
cluster->_mappedVisFloor = cluster->_mappedVisCeiling = 0;
d->clusters.append(cluster);
// Ownership of the BSP leaf is not given to the cluster.
cluster->_bspLeafs.append(leaf);
// Attribute the BSP leaf to the cluster.
leaf->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 *leaf, d->clusters[k]->_bspLeafs)
{
leaf->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->_flags |= Cluster::AllSelfRef;
foreach(BspLeaf *leaf, cluster->_bspLeafs)
{
HEdge const *base = leaf->poly().hedge();
HEdge const *hedge = base;
do
{
if(hedge->mapElement())
{
// This edge defines a section of a map line.
if(hedge->twin().hasFace())
{
if(cluster->_flags & Cluster::AllSelfRef)
{
BspLeaf const &backLeaf = hedge->twin().face().mapElement()->as<BspLeaf>();
Cluster const *backCluster = backLeaf.hasCluster()? &backLeaf.cluster() : 0;
if(backCluster != cluster)
{
if(!hedge->mapElement()->as<LineSideSegment>().line().isSelfReferencing())
{
cluster->_flags &= ~Cluster::AllSelfRef;
}
}
}
}
else
{
// If a back geometry is missing then never map planes.
cluster->_flags |= Cluster::NeverMapped;
cluster->_flags &= ~Cluster::AllSelfRef;
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(LineSide *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())
{
LineSide &back = side->back();
linkSoundEmitter(root, back.middleSoundEmitter());
linkSoundEmitter(root, back.bottomSoundEmitter());
linkSoundEmitter(root, back.topSoundEmitter());
}
}
}
#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();