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38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
#include "findrandompointaroundcircle.hpp"
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#include "settings.hpp"
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#include "findsmoothpath.hpp"
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#include <components/misc/rng.hpp>
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#include <DetourCommon.h>
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#include <DetourNavMesh.h>
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#include <DetourNavMeshQuery.h>
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namespace DetourNavigator
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{
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std::optional<osg::Vec3f> findRandomPointAroundCircle(const dtNavMesh& navMesh, const osg::Vec3f& halfExtents,
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const osg::Vec3f& start, const float maxRadius, const Flags includeFlags, const Settings& settings)
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{
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dtNavMeshQuery navMeshQuery;
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if (!initNavMeshQuery(navMeshQuery, navMesh, settings.mMaxNavMeshQueryNodes))
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return std::optional<osg::Vec3f>();
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dtQueryFilter queryFilter;
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queryFilter.setIncludeFlags(includeFlags);
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dtPolyRef startRef = findNearestPolyExpanding(navMeshQuery, queryFilter, start, halfExtents);
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if (startRef == 0)
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return std::optional<osg::Vec3f>();
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dtPolyRef resultRef = 0;
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osg::Vec3f resultPosition;
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navMeshQuery.findRandomPointAroundCircle(startRef, start.ptr(), maxRadius, &queryFilter,
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[]() { return Misc::Rng::rollProbability(); }, &resultRef, resultPosition.ptr());
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if (resultRef == 0)
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return std::optional<osg::Vec3f>();
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return std::optional<osg::Vec3f>(resultPosition);
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}
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}
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