Unreal Engine Issues
Unreal Engine Issues
Cable Actor becoming stiff when bound to two dynamic objects
UE - Simulation - Physics - Jun 1, 2023the cable actor does not dynamically deform when the cable actor's parent mesh moves. Instead, the cable actor becomes rigid between the meshes it's bound between. This bug does not occur in the fo ...
GeometryCollectionComponent take +1 frame to be marked as dirty
UE - Simulation - Physics - May 25, 2023Debugging the code I have been able to verify that in GeometryCollectionComponent.cpp line:2318, the if condition happens every two frames. I think DynamicCollection is not setting all the frames a ...
SetAllBodiesBelowPhysicsDisabled functionality appears to leave bodies behind that raycasts can still interact with.
UE - Simulation - Physics - May 9, 2023From UDN We use SetAllBodiesBelowPhysicsDisabled() to disable some bodies of our Vehicle. However by drawing the disabled bodies' particles position, we found those particles stay where they disab ...
Cooking crash during shutdown with no useful error
UE - Simulation - Physics - Apr 11, 2023Sometimes some of actors are destroyed after the destruction of the solver through the garbage collector. In this case, the app crash in FChaosScene::RemoveActorFromAccelerationStructureImp because ...
Cable Actor resets to initial end point position when moving the actor while Attach End is disabled
UE - Simulation - Physics - Apr 4, 2023This is a regression. Tested in //UE5/Release-5.1 CL23901901 Additionally, I placed the cable actor in a sequencer then keyed several changes in position. The Cable actor had the same behavior of r ...
AStaticMeshActor::CheckForErrors doesn't detect overlapping actors in some circumstances
UE - Simulation - Physics - Mar 14, 2023Licensee reports that overlapping actors not detected when the static mesh pivot doesn't coincide with actual geometry, e.g. between a character's legs. Maybe should do a bounding box check instead ...
OnComponentHit Event is not triggered when hit by a spawned actor with simulate physics enabled for WheeledVehiclePawn with BoxCollison
UE - Simulation - Physics - Feb 20, 2023BoxCollison's OnComponentHit event is not triggered when BoxCollison hits a spawned actor with simulate physics enabled. The event is triggered if the same actor has been placed in the level beforeh ...
Typo for Linear Plasticity Type: shirnk instead of shrink
UE - Simulation - Physics - Jan 10, 2023Regression: Tested in UE5/Release-5.0, this issue also occurs so this is not a regression. ...
Trace to complex collision returns incorrect PhysicalMaterial
UE - Simulation - Physics - Dec 15, 2022In ConvertQueryImpactHitImp, MaterialIndex is looked up from InternalFaceIndex, but FTriangleMeshImplicitObject:: MaterialIndices is an array by ExternalFaceIndex, so it returns incorrect material i ...
[CrashReport]UnrealEditor-Chaos!Chaos::FPhysicsSolverBase::GetExternalDataLock_External() [PhysicsSolverBase.h:677]
UE - Simulation - Physics - Nov 29, 2022Generated from CrashReporter ...