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Fallback to straight path when navmesh and pathgrind are not available

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elsid 2020-01-28 22:22:24 +01:00
parent 92ea66bb21
commit f7caeefddb
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GPG key ID: B845CB9FEE18AB40
3 changed files with 9 additions and 6 deletions
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9
apps/openmw/mwmechanics/pathfinding.cpp
View file

@ -314,7 +314,9 @@ namespace MWMechanics
{
mPath.clear();
buildPathByNavigatorImpl(actor, startPoint, endPoint, halfExtents, flags, std::back_inserter(mPath));
// If it's not possible to build path over navmesh due to disabled navmesh generation fallback to straight path
if (!buildPathByNavigatorImpl(actor, startPoint, endPoint, halfExtents, flags, std::back_inserter(mPath)))
mPath.push_back(endPoint);
mConstructed = true;
}
@ -335,7 +337,7 @@ namespace MWMechanics
mConstructed = true;
}
void PathFinder::buildPathByNavigatorImpl(const MWWorld::ConstPtr& actor, const osg::Vec3f& startPoint,
bool PathFinder::buildPathByNavigatorImpl(const MWWorld::ConstPtr& actor, const osg::Vec3f& startPoint,
const osg::Vec3f& endPoint, const osg::Vec3f& halfExtents, const DetourNavigator::Flags flags,
std::back_insert_iterator<std::deque<osg::Vec3f>> out)
{
@ -344,7 +346,7 @@ namespace MWMechanics
const auto world = MWBase::Environment::get().getWorld();
const auto stepSize = getPathStepSize(actor);
const auto navigator = world->getNavigator();
navigator->findPath(halfExtents, stepSize, startPoint, endPoint, flags, out);
return navigator->findPath(halfExtents, stepSize, startPoint, endPoint, flags, out).is_initialized();
}
catch (const DetourNavigator::NavigatorException& exception)
{
@ -352,6 +354,7 @@ namespace MWMechanics
<< "\" for \"" << actor.getClass().getName(actor) << "\" (" << actor.getBase()
<< ") from " << startPoint << " to " << endPoint << " with flags ("
<< DetourNavigator::WriteFlags {flags} << ")";
return true;
}
}

2
apps/openmw/mwmechanics/pathfinding.hpp
View file

@ -201,7 +201,7 @@ namespace MWMechanics
void buildPathByPathgridImpl(const osg::Vec3f& startPoint, const osg::Vec3f& endPoint,
const PathgridGraph& pathgridGraph, std::back_insert_iterator<std::deque<osg::Vec3f>> out);
void buildPathByNavigatorImpl(const MWWorld::ConstPtr& actor, const osg::Vec3f& startPoint,
bool buildPathByNavigatorImpl(const MWWorld::ConstPtr& actor, const osg::Vec3f& startPoint,
const osg::Vec3f& endPoint, const osg::Vec3f& halfExtents, const DetourNavigator::Flags flags,
std::back_insert_iterator<std::deque<osg::Vec3f>> out);
};

4
components/detournavigator/navigator.hpp
View file

@ -159,7 +159,7 @@ namespace DetourNavigator
* Equal to out if no path is found.
*/
template <class OutputIterator>
OutputIterator findPath(const osg::Vec3f& agentHalfExtents, const float stepSize, const osg::Vec3f& start,
boost::optional<OutputIterator> findPath(const osg::Vec3f& agentHalfExtents, const float stepSize, const osg::Vec3f& start,
const osg::Vec3f& end, const Flags includeFlags, OutputIterator out) const
{
static_assert(
@ -171,7 +171,7 @@ namespace DetourNavigator
);
const auto navMesh = getNavMesh(agentHalfExtents);
if (!navMesh)
return out;
return {};
const auto settings = getSettings();
return findSmoothPath(navMesh->lockConst()->getImpl(), toNavMeshCoordinates(settings, agentHalfExtents),
toNavMeshCoordinates(settings, stepSize), toNavMeshCoordinates(settings, start),