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Merge remote-tracking branch 'dteviot/FixRunningInCircles'

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c++11
Marc Zinnschlag 10 years ago
parent 28caeadef4 cb8ca2f03a
commit 0994893bc5
8 changed files with 79 additions and 97 deletions
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50
apps/openmw/mwmechanics/aicombat.cpp
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@ -677,44 +677,32 @@ namespace MWMechanics
return false;
}
void AiCombat::buildNewPath(const MWWorld::Ptr& actor, const MWWorld::Ptr& target)
bool AiCombat::doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell)
{
Ogre::Vector3 newPathTarget = Ogre::Vector3(target.getRefData().getPosition().pos);
float dist;
if(!mPathFinder.getPath().empty())
if (!mPathFinder.getPath().empty())
{
Ogre::Vector3 currPathTarget(PathFinder::MakeOgreVector3(mPathFinder.getPath().back()));
Ogre::Vector3 newPathTarget = PathFinder::MakeOgreVector3(dest);
float dist = (newPathTarget - currPathTarget).length();
float targetPosThreshold = (cell->isExterior()) ? 300.0f : 100.0f;
return dist > targetPosThreshold;
}
else
{
ESM::Pathgrid::Point lastPt = mPathFinder.getPath().back();
Ogre::Vector3 currPathTarget(PathFinder::MakeOgreVector3(lastPt));
dist = (newPathTarget - currPathTarget).length();
// necessarily construct a new path
return true;
}
else dist = 1e+38F; // necessarily construct a new path
}
float targetPosThreshold = (actor.getCell()->getCell()->isExterior())? 300.0f : 100.0f;
void AiCombat::buildNewPath(const MWWorld::Ptr& actor, const MWWorld::Ptr& target)
{
ESM::Pathgrid::Point newPathTarget = PathFinder::MakePathgridPoint(target.getRefData().getPosition());
//construct new path only if target has moved away more than on [targetPosThreshold]
if(dist > targetPosThreshold)
if (doesPathNeedRecalc(newPathTarget, actor.getCell()->getCell()))
{
ESM::Position pos = actor.getRefData().getPosition();
ESM::Pathgrid::Point start(PathFinder::MakePathgridPoint(pos));
ESM::Pathgrid::Point dest(PathFinder::MakePathgridPoint(newPathTarget));
if(!mPathFinder.isPathConstructed())
mPathFinder.buildPath(start, dest, actor.getCell(), false);
else
{
PathFinder newPathFinder;
newPathFinder.buildPath(start, dest, actor.getCell(), false);
if(!mPathFinder.getPath().empty())
{
newPathFinder.syncStart(mPathFinder.getPath());
mPathFinder = newPathFinder;
}
}
ESM::Pathgrid::Point start(PathFinder::MakePathgridPoint(actor.getRefData().getPosition()));
mPathFinder.buildSyncedPath(start, newPathTarget, actor.getCell(), false);
}
}

3
apps/openmw/mwmechanics/aicombat.hpp
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@ -53,6 +53,9 @@ namespace MWMechanics
virtual void writeState(ESM::AiSequence::AiSequence &sequence) const;
protected:
virtual bool doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell);
private:
int mTargetActorId;

11
apps/openmw/mwmechanics/aipackage.cpp
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@ -30,9 +30,9 @@ bool MWMechanics::AiPackage::pathTo(const MWWorld::Ptr& actor, ESM::Pathgrid::Po
ESM::Position pos = actor.getRefData().getPosition(); //position of the actor
/// Stops the actor when it gets too close to a unloaded cell
const ESM::Cell *cell = actor.getCell()->getCell();
{
MWWorld::Ptr player = MWBase::Environment::get().getWorld()->getPlayerPtr();
const ESM::Cell *cell = actor.getCell()->getCell();
Movement &movement = actor.getClass().getMovementSettings(actor);
//Ensure pursuer doesn't leave loaded cells
@ -67,8 +67,8 @@ bool MWMechanics::AiPackage::pathTo(const MWWorld::Ptr& actor, ESM::Pathgrid::Po
//***********************
if(mTimer > 0.25)
{
if(distance(mPrevDest, dest) > 10) { //Only rebuild path if it's moved
mPathFinder.buildPath(start, dest, actor.getCell(), true); //Rebuild path, in case the target has moved
if (doesPathNeedRecalc(dest, cell)) { //Only rebuild path if it's moved
mPathFinder.buildSyncedPath(start, dest, actor.getCell(), true); //Rebuild path, in case the target has moved
mPrevDest = dest;
}
@ -123,3 +123,8 @@ bool MWMechanics::AiPackage::pathTo(const MWWorld::Ptr& actor, ESM::Pathgrid::Po
return false;
}
bool MWMechanics::AiPackage::doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell)
{
return distance(mPrevDest, dest) > 10;
}

4
apps/openmw/mwmechanics/aipackage.hpp
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@ -4,6 +4,8 @@
#include "pathfinding.hpp"
#include <components/esm/defs.hpp>
#include "../mwworld/cellstore.hpp"
#include "obstacle.hpp"
#include "aistate.hpp"
@ -71,6 +73,8 @@ namespace MWMechanics
/** \return If the actor has arrived at his destination **/
bool pathTo(const MWWorld::Ptr& actor, ESM::Pathgrid::Point dest, float duration);
virtual bool doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell);
// TODO: all this does not belong here, move into temporary storage
PathFinder mPathFinder;
ObstacleCheck mObstacleCheck;

55
apps/openmw/mwmechanics/aitravel.cpp
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@ -51,64 +51,31 @@ namespace MWMechanics
bool AiTravel::execute (const MWWorld::Ptr& actor, AiState& state, float duration)
{
MWBase::World *world = MWBase::Environment::get().getWorld();
ESM::Position pos = actor.getRefData().getPosition();
Movement &movement = actor.getClass().getMovementSettings(actor);
const ESM::Cell *cell = actor.getCell()->getCell();
actor.getClass().getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, false);
actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Nothing);
MWWorld::Ptr player = world->getPlayerPtr();
if(cell->mData.mX != player.getCell()->getCell()->mData.mX)
{
int sideX = PathFinder::sgn(cell->mData.mX - player.getCell()->getCell()->mData.mX);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideX * (pos.pos[0] - cell->mData.mX*ESM::Land::REAL_SIZE) >
sideX * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
if(cell->mData.mY != player.getCell()->getCell()->mData.mY)
{
int sideY = PathFinder::sgn(cell->mData.mY - player.getCell()->getCell()->mData.mY);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideY * (pos.pos[1] - cell->mData.mY*ESM::Land::REAL_SIZE) >
sideY * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
if (!isWithinMaxRange(Ogre::Vector3(mX, mY, mZ), Ogre::Vector3(pos.pos)))
return false;
bool cellChange = cell->mData.mX != mCellX || cell->mData.mY != mCellY;
if(!mPathFinder.isPathConstructed() || cellChange)
if (pathTo(actor, ESM::Pathgrid::Point(static_cast<int>(mX), static_cast<int>(mY), static_cast<int>(mZ)), duration))
{
mCellX = cell->mData.mX;
mCellY = cell->mData.mY;
ESM::Pathgrid::Point dest(static_cast<int>(mX), static_cast<int>(mY), static_cast<int>(mZ));
ESM::Pathgrid::Point start(PathFinder::MakePathgridPoint(pos));
mPathFinder.buildPath(start, dest, actor.getCell(), true);
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
return true;
}
return false;
}
if(mPathFinder.checkPathCompleted(pos.pos[0], pos.pos[1]))
bool AiTravel::doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell)
{
bool cellChange = cell->mData.mX != mCellX || cell->mData.mY != mCellY;
if (!mPathFinder.isPathConstructed() || cellChange)
{
movement.mPosition[1] = 0;
mCellX = cell->mData.mX;
mCellY = cell->mData.mY;
return true;
}
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1])));
movement.mPosition[1] = 1;
return false;
}

3
apps/openmw/mwmechanics/aitravel.hpp
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@ -34,6 +34,9 @@ namespace MWMechanics
virtual int getTypeId() const;
protected:
virtual bool doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell);
private:
float mX;
float mY;

38
apps/openmw/mwmechanics/pathfinding.cpp
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@ -301,23 +301,35 @@ namespace MWMechanics
return false;
}
// used by AiCombat, see header for the rationale
bool PathFinder::syncStart(const std::list<ESM::Pathgrid::Point> &path)
// see header for the rationale
void PathFinder::buildSyncedPath(const ESM::Pathgrid::Point &startPoint,
const ESM::Pathgrid::Point &endPoint,
const MWWorld::CellStore* cell,
bool allowShortcuts)
{
if (mPath.size() < 2)
return false; //nothing to pop
std::list<ESM::Pathgrid::Point>::const_iterator oldStart = path.begin();
std::list<ESM::Pathgrid::Point>::iterator iter = ++mPath.begin();
if( (*iter).mX == oldStart->mX
&& (*iter).mY == oldStart->mY
&& (*iter).mZ == oldStart->mZ)
{
mPath.pop_front();
return true;
// if path has one point, then it's the destination.
// don't need to worry about bad path for this case
buildPath(startPoint, endPoint, cell, allowShortcuts);
}
else
{
const ESM::Pathgrid::Point oldStart(*getPath().begin());
buildPath(startPoint, endPoint, cell, allowShortcuts);
if (mPath.size() >= 2)
{
// if 2nd waypoint of new path == 1st waypoint of old,
// delete 1st waypoint of new path.
std::list<ESM::Pathgrid::Point>::iterator iter = ++mPath.begin();
if (iter->mX == oldStart.mX
&& iter->mY == oldStart.mY
&& iter->mZ == oldStart.mZ)
{
mPath.pop_front();
}
}
}
return false;
}
}

12
apps/openmw/mwmechanics/pathfinding.hpp
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@ -63,13 +63,13 @@ namespace MWMechanics
/** Synchronize new path with old one to avoid visiting 1 waypoint 2 times
@note
If the first point is chosen as the nearest one
the situation can occur when the 1st point of the new path is undesirable
(i.e. the 2nd point of new path == the 1st point of old path).
@param path - old path
@return true if such point was found and deleted
BuildPath() takes closest PathGrid point to NPC as first point of path.
This is undesireable if NPC has just passed a Pathgrid point, as this
makes the 2nd point of the new path == the 1st point of old path.
Which results in NPC "running in a circle" back to the just passed waypoint.
*/
bool syncStart(const std::list<ESM::Pathgrid::Point> &path);
void buildSyncedPath(const ESM::Pathgrid::Point &startPoint, const ESM::Pathgrid::Point &endPoint,
const MWWorld::CellStore* cell, bool allowShortcuts = true);
void addPointToPath(ESM::Pathgrid::Point &point)
{

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