khanat-opennel-code/code/ryzom/server/src/ai_service/path_behaviors.cpp

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// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdpch.h"
#include "path_behaviors.h"
#include "ais_actions.h"
#include "continent.h"
#include <typeinfo>
extern bool simulateBug(int bugId);
using namespace RYAI_MAP_CRUNCH;
using namespace CAISActionEnums;
NLMISC::CVariable<bool> ActivateStraightRepulsion("ai", "ActivateStraightRepulsion", "Activate the straight repulsion for follow route (only available with Ring shards for moment).", true, 0, true);
NLMISC::CVariable<bool> LogTimeConsumingAStar("ai", "LogTimeConsumingAStar", "Activate logging of time consuming path finding operations", false, 0, true);
//////////////////////////////////////////////////////////////////////////////
// Actions used when parsing primitives //
//////////////////////////////////////////////////////////////////////////////
DEFINE_ACTION(ContextGlobal,SETNOGO)
{
// get hold of the parameters and check their validity
float x,y;
if (!getArgs(args,name(),x,y))
return;
const RYAI_MAP_CRUNCH::CMapPosition pos(CAIVector (x,y));
const RYAI_MAP_CRUNCH::CWorldMap &worldMap=CWorldContainer::getWorldMap(/*0*/);
const CSuperCell *superCell=worldMap.getSuperCellCst(pos);
if (!superCell)
{
nlwarning("Unable to set flags at this position %.3f %.3f",x,y);
return;
}
}
DEFINE_ACTION(ContextGlobal,SAFEZONE)
{
// get hold of the parameters and check their validity
float x,y,r;
if (!getArgs(args,name(),x,y,r))
return;
const RYAI_MAP_CRUNCH::CMapPosition pos(CAIVector (x,y));
CWorldContainer::getWorldMapNoCst().setFlagOnPosAndRadius(pos,r,1);
}
//////////////////////////////////////////////////////////////////////////////
// CFollowPathContext //
//////////////////////////////////////////////////////////////////////////////
CFollowPathContext::CFollowPathContext(const char* contextName, uint32 maxSearchDepth, bool forceMaxDepth)
{
if (contextName==NULL)
{
// nldebug("CFollowPathContext: NULL : first init");
_PrevContext= NULL;
_ContextName= "TopOfStack";
_MaxSearchDepth= maxSearchDepth;
_NextContext= NULL;
}
else
{
// nldebug("CFollowPathContext: %s",contextName);
_PrevContext= CFollowPath::getInstance()->_TopFollowPathContext;
nlassert(_PrevContext!=NULL);
CFollowPath::getInstance()->_TopFollowPathContext= this;
_PrevContext->_NextContext= this;
_ContextName= contextName;
_MaxSearchDepth= (forceMaxDepth)? maxSearchDepth: std::min(maxSearchDepth,_PrevContext->_MaxSearchDepth);
_NextContext= NULL;
}
}
CFollowPathContext::~CFollowPathContext()
{
// if we're not the bottom of stack then fixup the previous stack entry
if (_PrevContext!=NULL)
{
_PrevContext->_NextContext= _NextContext;
}
// if we're not at the top of stack then fixup the next stack entry
// otherwise fixup the stack top pointer in the CFollowPath singleton
if (_NextContext!=NULL)
{
_NextContext->_PrevContext= _PrevContext;
}
else
{
CFollowPath::getInstance()->_TopFollowPathContext= _PrevContext;
}
}
void CFollowPathContext::buildContextName(std::string &result) const
{
// concatenate previous stack entries
if (_PrevContext!=NULL)
{
_PrevContext->buildContextName(result);
result+=':';
}
else
{
result.clear();
}
// add our name to the result
result+= _ContextName;
}
//////////////////////////////////////////////////////////////////////////////
// CFollowPath //
//////////////////////////////////////////////////////////////////////////////
CFollowPath* CFollowPath::_Instance = NULL;
CFollowPath* CFollowPath::getInstance()
{
if (_Instance==NULL)
{
_Instance = new CFollowPath;
}
return _Instance;
}
void CFollowPath::destroyInstance()
{
if (_Instance!=NULL)
{
delete _Instance;
_Instance = NULL;
}
}
CFollowPath::CFollowPath()
: _LastReason(NO_REASON)
, _LastFIASPReason(CWorldMap::FIASPR_NO_REASON)
{
// initialise the _TopFollowPathContext stack
_TopFollowPathContext= new CFollowPathContext(NULL);
}
NLMISC::CVariable<uint> AStarNbStepsLogThreshold( "ais", "AStarNbStepsLogThreshold", "", 1000, 0, true );
namespace RYAI_MAP_CRUNCH
{
extern uint LastAStarNbSteps;
}
inline void logTimeConsumingAStar(CModEntityPhysical* bot, float dist, CPathCont& pathCont, CAIVector* realDestination )
{
if (!LogTimeConsumingAStar.get())
return;
if (RYAI_MAP_CRUNCH::LastAStarNbSteps >= AStarNbStepsLogThreshold.get() )
{
nlinfo( "ASTAR: Bot %s (type %s) used %u steps src=%s dest=%s dist=%g a*flag=%s context=%s",
bot ? bot->getPersistent().getOneLineInfoString().c_str() : "-",
bot ? typeid(*bot).name() : "-",
RYAI_MAP_CRUNCH::LastAStarNbSteps,
bot ? bot->pos().toString().c_str() : "-",
realDestination ? realDestination->toString().c_str() : pathCont.getDestination().toString().c_str(),
dist,
bot ? RYAI_MAP_CRUNCH::toString(bot->getAStarFlag()).c_str() : "-",
CFollowPath::getInstance()->getContextName() );
}
}
NLMISC::CMustConsume<CFollowPath::TFollowStatus> CFollowPath::followPath(
CModEntityPhysical* bot,
CPathPosition& pathPos,
CPathCont& pathCont,
float dist,
float modecalageDist,
float angleAmort,
bool focusOnTargetDirection,
CAIVector* realDestination,
float repulsSpeed,
bool updateOrient)
{
H_AUTO(followPath);
if (!bot->canMove())
return FOLLOW_BLOCKED;
TFollowStatus returnStatus = FOLLOWING;
CAngle motionAngle;
bool isMotionAngleComputed = false;
CAIVector add;
CAIVector addCorrection(0.0,0.0);
CWorldMap const& worldMap = CWorldContainer::getWorldMap();
CAIPos const startPos = CAIPos(bot->pos());
#ifdef NL_DEBUG
nlassert(angleAmort>=0.f && angleAmort<=1.f);
#endif
if (!bot->wpos().isValid())
return FOLLOWING;
bool haveRestart = false;
switch (pathPos._PathState)
{
case CPathPosition::NOT_INITIALIZED:
{
pathPos._Angle=bot->theta();
reStartFollowTopo:
if (!pathCont.getCalcPathForSource (pathPos,bot->wpos()))
{
pathPos._PathState = CPathPosition::NOT_INITIALIZED;
returnStatus = FOLLOW_NO_PATH;
_LastReason = FNP_NOT_INITIALIZED;
break;
}
logTimeConsumingAStar(bot, dist, pathCont, realDestination);
pathPos._PathState = CPathPosition::FOLLOWING_TOPO;
}
// No break
case CPathPosition::FOLLOWING_TOPO:
{
if (pathCont._TimeTopoChanged!=pathPos._TimeTopoChanged)
{
goto reStartFollowTopo;
}
// If we have changed our current topology, we have to take the next furthest topo in the same 'cell'.
CTopology::TTopologyRef botTopology(bot->wpos().getTopologyRef());
while ( pathPos.haveNextTopology(2)
&& botTopology==pathPos.getNextTopology())
{
pathPos.nextTopology();
}
if (!pathPos.isFinished())
{
CGridDirectionLayer const* layer = worldMap.getGridDirectionLayer(bot->wpos(),pathPos.getNextTopology());
if (!layer) // We are now to far to have a layer to lead us to the next topo.
{
goto reStartFollowTopo;
}
CDirection motion = layer->getDirection(bot->wpos());
if (motion.isValid())
{
motionAngle = motion.getAngle();
isMotionAngleComputed=true;
break;
}
}
pathPos._PathState = CPathPosition::FOLLOWING_INSIDE_TOPO;
}
// No break
case CPathPosition::FOLLOWING_INSIDE_TOPO:
{
if (pathCont._TimeTopoChanged!=pathPos._TimeTopoChanged)
{
goto reStartFollowTopo;
}
if (pathCont._TimeDestChanged!=pathPos._TimeDestChanged)
{
pathPos._InsidePath=NULL;
}
if (pathPos._InsidePath.isNull())
{
CInsidePath* insidePath = new CInsidePath();
pathPos._InsidePath = insidePath;
if (!worldMap.findInsideAStarPath(bot->wpos(), pathCont.getDestPos(), insidePath->_DirectionPath, pathCont.denyFlags()))
{
// If findInsideAStarPath returned false we have a topology change
pathPos._InsidePath=NULL;
#ifdef NL_DEBUG
nlassert(!haveRestart);
#endif
if (!haveRestart)
{
haveRestart = true;
goto reStartFollowTopo;
}
returnStatus = FOLLOW_NO_PATH;
_LastReason = FNP_NO_INSIDE_ASTAR_PATH;
_LastFIASPReason = worldMap._LastFIASPReason;
break;
}
pathPos._InsideIndex = 0;
pathPos._TimeDestChanged = pathCont._TimeDestChanged;
pathPos._TimeTopoChanged = pathCont._TimeTopoChanged;
// If we reached path end
if (pathPos._InsideIndex >= insidePath->_DirectionPath.size())
{
returnStatus = FOLLOW_ARRIVED;
pathPos._InsidePath = NULL;
}
else
{
pathPos._InsideStartPos = bot->wpos();
CDirection direction = insidePath->_DirectionPath[pathPos._InsideIndex];
pathPos._InsideDestPos = pathPos._InsideStartPos.step(direction.dx(), direction.dy());
}
}
if (!pathPos._InsidePath.isNull())
{
CInsidePath* insidePath = pathPos._InsidePath;
CMapPosition botWpos = bot->wpos();
while (pathPos._InsideIndex < insidePath->_DirectionPath.size())
{
if (botWpos == pathPos._InsideStartPos)
break;
if (botWpos == pathPos._InsideDestPos)
{
++pathPos._InsideIndex;
if (pathPos._InsideIndex >= insidePath->_DirectionPath.size())
{
returnStatus = FOLLOW_ARRIVED;
pathPos._InsidePath = NULL;
}
else
{
pathPos._InsideStartPos = botWpos;
CDirection direction = insidePath->_DirectionPath[pathPos._InsideIndex];
pathPos._InsideDestPos = pathPos._InsideStartPos.step(direction.dx(), direction.dy());
}
break;
}
else
{
pathPos._InsideIndex++;
}
}
if (returnStatus!=FOLLOW_ARRIVED && pathPos._InsideIndex >= insidePath->_DirectionPath.size())
{
pathPos._InsidePath = NULL;
}
else
{
if (returnStatus!=FOLLOW_ARRIVED)
{
motionAngle = pathPos._InsidePath->_DirectionPath[pathPos._InsideIndex].getAngle();
isMotionAngleComputed = true;
}
else
{
pathPos._PathState = CPathPosition::REACH_END;
}
}
}
}
break;
case CPathPosition::REACH_END:
{
if (pathCont._TimeDestChanged!=pathPos._TimeDestChanged)
{
goto reStartFollowTopo;
}
else
{
returnStatus=FOLLOW_ARRIVED;
}
}
break;
case CPathPosition::NO_PATH:
break;
default:
break;
}
if (isMotionAngleComputed)
{
CAngle thisAngle = pathPos._Angle;
CAIVector deltaToDest = (realDestination!=NULL)?*realDestination:pathCont.getDestination();
deltaToDest -= CAIVector(bot->pos());
CAngle idealAngle = deltaToDest.asAngle();
sint32 absDeltaIdealAngle = abs((sint16)(idealAngle.asRawSint16()-motionAngle.asRawSint16()));
if (absDeltaIdealAngle>=32768)
{
absDeltaIdealAngle = abs((sint16)absDeltaIdealAngle-65536);
}
bool idealIsValid = true;
if (absDeltaIdealAngle>(32768*67.5/180)) // /*97*/ si un peu plus de 95 degr<67>s de difference.
{
idealIsValid = false;
}
else
{
//////////////////////////////////////////////////////////////////////////
// verify that the direction is valid in the map at our position (very slow, to be optimized).
CDirection dir0, dir1;
CDirection::getDirectionAround(idealAngle, dir0, dir1);
CWorldPosition testPos(bot->wpos());
dir1.addStep(CDirection::HALF_TURN_RIGHT);
idealIsValid=worldMap.customCheckDiagMove(testPos, dir1, pathCont.denyFlags());
}
if (idealIsValid)
{
motionAngle = idealAngle;
}
{
sint16 deltaAngle = motionAngle.asRawSint16()-thisAngle.asRawSint16();
sint32 absDeltaAngle = abs(deltaAngle);
// Take the smallest angle must be add in CAngle.
if (absDeltaAngle >= 32768)
{
if (deltaAngle > 0)
deltaAngle = (sint16)deltaAngle-65536;
else
deltaAngle = (sint16)65536-deltaAngle;
}
// Only if significative.
if (absDeltaAngle>32)
{
deltaAngle = (sint16)((float)deltaAngle*angleAmort);
thisAngle += deltaAngle;
}
else
{
thisAngle = motionAngle;
}
}
pathPos._Angle = thisAngle;
// Verify that dist is not too high !
{
float reachDist = (float)(bot->pos().quickDistTo(pathCont.getDestination())*0.5+0.1);
if (dist > reachDist)
dist = reachDist;
}
add = CAIVector(thisAngle.asVector2d()*dist);
if (idealIsValid)
{
deltaToDest.normalize(dist*1000);
addCorrection = deltaToDest-add;
}
}
CAIVector moveDecalage=bot->moveDecalage();
bot->resetDecalage();
moveDecalage.normalize(modecalageDist*1000);
CAIVector rAdd;
if (simulateBug(8))
{
rAdd = add;
if (IsRingShard.get() && ActivateStraightRepulsion.get())
{
// straight repulsion
CAIVector repulsion;
if (bot->calcStraightRepulsion(startPos+rAdd, repulsion))
{
rAdd += moveDecalage;
rAdd += repulsion;
}
else
{
return FOLLOW_BLOCKED;
}
}
else
{
// repulsion
CAIVector repulsion = bot->calcRepulsion(startPos+rAdd);
rAdd += moveDecalage;
repulsion.normalize((float)(std::max((float)rAdd.norm(),repulsSpeed)*710)); // minimum of 0.25m/s.
rAdd += repulsion;
}
}
else
{
rAdd = add + moveDecalage;
if (IsRingShard.get() && ActivateStraightRepulsion.get())
{
// straight repulsion
CAIVector repulsion;
if (bot->calcStraightRepulsion(startPos+rAdd, repulsion))
{
rAdd += repulsion;
}
else
{
return FOLLOW_BLOCKED;
}
}
else
{
// repulsion
CAIVector repulsion = bot->calcRepulsion(startPos+rAdd);
repulsion.normalize((float)(std::max((float)rAdd.norm(),repulsSpeed)*710)); // minimum of 0.25m/s.
rAdd += repulsion;
}
}
if (!rAdd.isNull() && !bot->moveBy(rAdd, pathCont.denyFlags()))
{
if (rAdd==add || !bot->moveBy(add, pathCont.denyFlags())) // Try without correction / repulsion, etc .. (if there's any).
{
if (!isMotionAngleComputed || pathPos._Angle==motionAngle)
{
// try a 1 meter step
add = add.normalize()*1000;
if (!bot->moveBy(add, pathCont.denyFlags()))
return FOLLOW_BLOCKED;
}
if (isMotionAngleComputed)
{
pathPos._Angle = motionAngle;
if (updateOrient)
bot->setTheta(motionAngle);
}
return returnStatus;
}
else
{
if (updateOrient)
bot->setTheta(pathPos._Angle);
}
}
else
{
if (updateOrient && !rAdd.isNull())
bot->setTheta(rAdd.asAngle());
}
return returnStatus;
}
const char* CFollowPath::getContextName() const
{
static std::string name;
// the following should never happen but it's quite unimportant
if (_TopFollowPathContext==NULL)
return "<no context stack>";
// delegate to the top context to build the contextname
_TopFollowPathContext->buildContextName(name);
// we're allowed to return this value because 'name' is a static
return name.c_str();
}
//////////////////////////////////////////////////////////////////////////////
// CPathCont //
//////////////////////////////////////////////////////////////////////////////
CPathCont::CPathCont(RYAI_MAP_CRUNCH::TAStarFlag denyFlags)
: _TimeTopoChanged(~0)
, _TimeDestChanged(~0)
, _denyFlags(denyFlags)
{
}
CPathCont::CPathCont(CPathCont const& pathCont)
: _denyFlags(pathCont._denyFlags)
{
}
void CPathCont::clearPaths()
{
_SourcePaths.clear();
}
void CPathCont::setDestination(RYAI_MAP_CRUNCH::CWorldPosition const& destPos)
{
RYAI_MAP_CRUNCH::CMapPosition mapPos(destPos);
if (_DestinationMapPos==mapPos)
return;
_DestinationMapPos = mapPos;
_Destination = destPos;
_VerticalPos = AITYPES::vp_auto;
uint32 gameCycle = CTimeInterface::gameCycle();
RYAI_MAP_CRUNCH::CWorldPosition tmpPos = destPos;
if (tmpPos!=_DestPos)
{
_DestPos = tmpPos;
_TimeDestChanged = gameCycle;
if (!_DestPos.isValid())
{
clearPaths();
}
else
{
RYAI_MAP_CRUNCH::CTopology::TTopologyRef newTopo = _DestPos.getTopologyRef();
if (((RYAI_MAP_CRUNCH::CTopology::TTopologyId)newTopo)!=_TopoRef )
{
_TimeTopoChanged = gameCycle;
clearPaths();
_TopoRef = newTopo;
}
}
}
}
void CPathCont::setDestination(AITYPES::TVerticalPos verticalPos, CAIVector const& destPos)
{
RYAI_MAP_CRUNCH::CMapPosition mapPos(destPos);
if (_DestinationMapPos==mapPos)
return;
_DestinationMapPos = mapPos;
_Destination = destPos;
_VerticalPos = verticalPos;
uint32 gameCycle = CTimeInterface::gameCycle();
RYAI_MAP_CRUNCH::CWorldPosition tmpPos;
CWorldContainer::getWorldMap().setWorldPosition(verticalPos, tmpPos,destPos);
if (tmpPos!=_DestPos)
{
_DestPos = tmpPos;
_TimeDestChanged = gameCycle;
if (!_DestPos.isValid())
{
clearPaths ();
}
else
{
RYAI_MAP_CRUNCH::CTopology::TTopologyRef newTopo = _DestPos.getTopologyRef();
if (((RYAI_MAP_CRUNCH::CTopology::TTopologyId)newTopo)!=_TopoRef )
{
_TimeTopoChanged = gameCycle;
clearPaths();
_TopoRef = newTopo;
}
}
}
}
bool CPathCont::getPathForSource(CPathPosition& pathPos, RYAI_MAP_CRUNCH::CWorldPosition const& startPos) const
{
H_AUTO(getPathForSource);
RYAI_MAP_CRUNCH::CTopology::TTopologyRef const startTopo = startPos.getTopologyRef();
std::vector<NLMISC::CSmartPtr<CAIPath> >::const_iterator it = _SourcePaths.begin();
const std::vector<NLMISC::CSmartPtr<CAIPath> >::const_iterator itEnd = _SourcePaths.end();
while (it!=itEnd)
{
CAIPath *path=*(it);
std::vector<RYAI_MAP_CRUNCH::CTopology::TTopologyRef>::const_iterator const topoItBegin=path->topologiesPath().begin();
std::vector<RYAI_MAP_CRUNCH::CTopology::TTopologyRef>::const_iterator const topoItEnd=path->topologiesPath().end();
std::vector<RYAI_MAP_CRUNCH::CTopology::TTopologyRef>::const_iterator const topoItFind = std::find(topoItBegin,topoItEnd,startTopo);
if (topoItFind!=topoItEnd)
{
pathPos._Index = topoItFind-topoItBegin;
pathPos._Path = *it;
return true;
}
++it;
}
pathPos._Path = NULL;
return false; // No path found.
}
bool CPathCont::calcPathForSource(CPathPosition& pathPos, RYAI_MAP_CRUNCH::CWorldPosition const& startPos)
{
H_AUTO(calcPathForSource);
RYAI_MAP_CRUNCH::CWorldMap const& worldMap = CWorldContainer::getWorldMap();
{
// Get a free path.
std::vector<NLMISC::CSmartPtr<CAIPath> >::iterator it, itEnd = _SourcePaths.end();
for (it = _SourcePaths.begin(); it!=itEnd; ++it)
if ((*it)->getRefCount()==1) // one refcount is reserved for the current list.
break;
// If we didn't found a free path we have to extend the vector..
if (it == itEnd)
{
_SourcePaths.push_back(new CAIPath());
pathPos._Path = _SourcePaths.back();
}
else
{
pathPos._Path = (*it);
}
}
pathPos._Index = 0; // current topology index.
CAIPath& pathRef = *(pathPos._Path);
// Check start position validity
if (!startPos.isValid())
{
RYAI_MAP_CRUNCH::CWorldPosition newpos;
CWorldContainer::calcNearestWPosFromPosAnRadius(_VerticalPos, newpos, startPos, 6, 100, CWorldContainer::CPosValidatorDefault());
#ifdef NL_DEBUG
if (newpos.isValid() && LogAcceptablePos)
nlwarning("Path pos error at position %s: an acceptable position could be %s", startPos.toString().c_str(), newpos.toString().c_str() );
if (!newpos.isValid())
nlwarning("Path pos error at position %s: no acceptable position found around", startPos.toString().c_str());
#endif
pathRef.setStartPos(newpos);
}
else
{
pathRef.setStartPos(startPos);
}
// Check dest position validity
if (!_DestPos.isValid())
{
RYAI_MAP_CRUNCH::CWorldPosition newpos;
CWorldContainer::calcNearestWPosFromPosAnRadius(_VerticalPos, newpos, _DestPos, 6, 100, CWorldContainer::CPosValidatorDefault());
#ifdef NL_DEBUG
if (newpos.isValid() && LogAcceptablePos)
nlwarning("Path pos error at position %s, an acceptable position could be %s", _DestPos.toString().c_str(), newpos.toString().c_str() );
if (!newpos.isValid())
nlwarning("Path pos error at position %s, no acceptable position found around", _DestPos.toString().c_str());
#endif
_DestPos = newpos;
}
pathRef.setEndPos(_DestPos);
if (!worldMap.findAStarPath(pathRef.getStartPos(), _DestPos, pathRef.topologiesPathForCalc(), _denyFlags))
{
pathPos._Path = NULL;
return false;
}
return true;
}
bool CPathCont::getCalcPathForSource(CPathPosition& pathPos, RYAI_MAP_CRUNCH::CWorldPosition const& startPos)
{
H_AUTO(GetCalcPathForSource);
static uint32 getCount = 0;
static uint32 calcCount = 0;
pathPos._TimeDestChanged = _TimeDestChanged;
pathPos._TimeTopoChanged = _TimeTopoChanged;
if (getPathForSource(pathPos, startPos))
{
++getCount;
return true;
}
if (calcPathForSource(pathPos, startPos))
{
++calcCount;
return true;
}
return false;
}
//////////////////////////////////////////////////////////////////////////////
// CPathPosition //
//////////////////////////////////////////////////////////////////////////////
CPathPosition::CPathPosition(CAngle const& angle)
: _Angle(angle)
, _Path(NULL)
, _PathState(NOT_INITIALIZED)
{
}
bool CPathPosition::isPathValid() const
{
return !_Path.isNull();
}
RYAI_MAP_CRUNCH::CTopology::TTopologyRef const& CPathPosition::getTopology() const
{
#ifdef NL_DEBUG
nlassert(_Index<_Path->topologiesPath().size());
#endif
return _Path->topologiesPath()[_Index];
}
RYAI_MAP_CRUNCH::CTopology::TTopologyRef const& CPathPosition::getNextTopology() const
{
#ifdef NL_DEBUG
nlassert((_Index+1)<_Path->topologiesPath().size());
#endif
return _Path->topologiesPath()[_Index+1];
}
bool CPathPosition::isFinished() const
{
uint32 size = _Path->topologiesPath().size();
return (size==0 || _Index==size-1);
}
bool CPathPosition::nextTopology()
{
++_Index;
return _Index<_Path->topologiesPath().size();
}
bool CPathPosition::haveNextTopology(uint nbTopo)
{
return (_Index+nbTopo)<_Path->topologiesPath().size();
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////