Unreal Engine Issues
Unreal Engine Issues
DrawBoxSweeps does not fully account for rotation
UE - Simulation - Physics - Apr 3, 2019DrawBoxSweeps does not account for box rotation when drawing lines between swept vertices, leading to disconnected debug visuals. ...
GetClosestPointOnCollision returning point on parent
UE - Simulation - Physics - Mar 21, 2019GetClosestPointonCollision returns point on parent instead of welded child. From user: "The problem appears to be in PhysicsInterfacePhysX.cpp in GetSquaredDistanceToBody, line 2873. When UPrimit ...
Changing collision response in runtime prevents physics actor from sleeping after interaction with channel-relevant object
UE - Simulation - Physics - Mar 5, 2019Changing collision response in runtime prevents physics actor from sleeping after interaction with channel-relevant object ...
Constraint to kinematic root body prevents skeletal mesh from sleeping
UE - Simulation - Physics - Mar 5, 2019Linked test project contains already set up actor as described in steps to reproduce. Using a kinematic body on a root bone, setting all other bodies sleep family to Custom, and their custom sleep t ...
CCD can produce incorrect results at low frame rates
UE - Simulation - Physics - Feb 27, 2019The attached project has a fixed frame rate of 30fps with a simulating CCD cube above a with a full restitution floor. The cube has an odd rotation, such that it impacts the floor at a single point ...
LineTraceComponent does not respect bEnablePerPolyCollision
UE - Simulation - Physics - Feb 26, 2019USkeletalMeshComponent::LineTraceComponent does not properly consider bEnablePerPolyCollision. It appears to use the component's bodies, which are empty. It should be sufficient to use UPrimitiveCom ...
ENGINE_API missing from GeomSweepMulti and GeomOverlapMulti templates
UE - Simulation - Physics - Feb 25, 2019GeomSweepMulti and GeomOverlapMulti are not being exported, as the template specializations are declared outside of the physics interface class without ENGINE_API. ...
Rotating constraints in PhAT rotates both reference frames
UE - Simulation - Physics - Feb 20, 2019Rotating constraints in PhAT rotates both reference frames. This behavior was previously enabled by holding ALT while rotating, as indicated by an on screen message in PhAT, but has now become the d ...
FPhysicsInterface_PhysX::Sweep_Geom calculates incorrect shape transform
UE - Simulation - Physics - Feb 19, 2019FPhysicsInterface_PhysX::Sweep_Geom incorrectly calculates the shapes' world transforms, while an alternate approach in FPhysicsInterface_PhysX::LineTrace_Geom works correctly. ...
Shaped Trace by channel traces do not return true when the starting and ending point are the same
UE - Simulation - Physics - Feb 18, 2019When a shaped trace by channel has a starting and ending point that is the same, it no longer returns true when overlapping an object. Regression: Yes This appears to work as expected in 4.21.2 bi ...