Unreal Engine Issues
Unreal Engine Issues
Navmesh blocking representation for cylinders is wrongly offset when the mesh has IsDynamicObstacle=true
UE - AI - Navigation - Jul 16, 2024In a mesh asset, setting Navigation>IsDynamicObstacle=true will make the Navigation / Cylinder Collision projection appear in a wrong position. As described in the case, the fix should reside in Na ...
[AI] AgentToNavDataMap still contains entries when cleaning up navigation system
UE - AI - Navigation - Jun 10, 2024The navigation system has errors in the log for agents still being mapped to navigation data in CleanUp. This appears to stem from agent step height being recalculated in ARecastNavMesh::SetConfig i ...
[AI] Navmesh shows in editor but does not get loaded in PIE
UE - AI - Navigation - May 13, 2024When using static or dynamic modifiers only navmesh, there are times that the navmesh will build and display correctly in editor, but it does not get properly loaded at runtime (PIE/SIE). The Recast ...
[AI] Navmesh edge missing for polygon in tile
UE - AI - Navigation - Mar 11, 2024User is reporting a bug where there are cases that a polygon in a navmesh tile will not generate an edge. This seems to be where only part of the polygon side would be part of the edge, but the rest ...
"Build All Levels" does not re-AddNavigationSystemToWorld
UE - AI - Navigation - Feb 28, 2024The Build All Levels editor action cleans up the world's NavDataSet (UNavigationSystemV1::NavDataSet) as pre-rebuild world cleanup by calling: SetNavigationSystem(nullptr); inside UWorld::Cleanu ...
When PackedLevelActor is placed across navtiles, navmesh is incorrectly split and generated in navtiles
UE - AI - Navigation - Feb 28, 2024When creating a PackedLevelActor by packing multiple StaticMesh, the navmesh isn't generated correctly on top of it. In detail, navmesh is generated by splitting on navtiles. This is probably due to ...
Foliage 'BlockAll' instanced static meshes do not affect NavMesh
UE - AI - Navigation - Feb 27, 2024When placing static mesh foliage and setting the foliage mesh's Collision Preset to Block All, the placed meshes do not consistently block parts of the nav mesh. Expected: Placed meshes (for examp ...
[AI] Updating an HISM instance transform breaks the navmesh on all of the HISM instances.
UE - AI - Navigation - Jan 19, 2024Navmesh does not generate correctly around HISM instances when one instance has its transform updated. The most noticeable change is that adjusting the scale of an instance's transform will cause th ...
[AI] ZoneGraph does not update build settings when changed in project settings
UE - AI - Navigation - Dec 11, 2023The build settings for ZoneGraph do not get refreshed after the editor loads. Changing the snap distance or the snap angle will not be reflected in the ZoneGraph until you reload the editor. You can ...
Migrating a project from UE5.2 to UE5.3.1, there was a difference in the navmesh generated on HISM
UE - AI - Navigation - Oct 24, 2023HISM is generated by ConstructionScript Actor is placed on the level and navmesh is generated on top of HISM. In UE5.2, the navmesh was generated without splitting on the HISM. In UE5.3, a break occ ...