SweepComponent fails against non-root bodies of skeletal mesh component in PhysX

Simulation - Physics - Apr 6, 2021

UDN - https://udn.unrealengine.com/s/question/0D52L00005H9X5XSAV/sweepcomponent-never-returns-a-valid-hit-against-skeletal-meshes-when-using-physx?fromCase=1 ...

Inversing the scale of a skeletal mesh when it's simulating physics results in the mesh and collision being flipped

Simulation - Physics - Mar 18, 2021

The attached project has 3 skeletal meshes. One with its original transform and then 2 copies with an inversed scale in the X axis for one and the Y axis for the other. When pressing play, the meshe ...

Max Depenetration Velocity cannot be set to zero after setting it to a non-zero value

Simulation - Physics - Mar 1, 2021

It seems that when setting the Max Depenetration Velocity to a non-zero value, you are then unable to set it back to 0. Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur so marking ...

Collision lost from body when using world composition and streaming

Simulation - Physics - Mar 1, 2021

Physics object from a streamed level does not interact with other physics objects in persistent level. ...

All ELinearConstraintMotion pins in BP reset to "Free" when converting a project to 4.26

Simulation - Physics - Feb 24, 2021

When using any of the Set Linear Limit nodes (X/Y/Z) and converting a project from a previous version of the engine, the nodes get their Constraint Type value reset to Free. I tested this with proje ...

Engine Crashes On Scene Close When An Actor Is Spawned With Templated FActorSpawnParameters

Simulation - Physics - Mar 5, 2020

When an actor is spawned with Spawn Parameters that are templated the engine crashes when closing a scene. This wasn't happening when there wasn't a physics constraint on the spawned blueprint. Thi ...

Physics Constraint Actor Won't Disable Collision Between Two Actors That Are Already Colliding

Simulation - Physics - Feb 17, 2020

Meshes that are colliding that are set as constraint actors don't follow the Physics Constraint Actors "Disable Collision" parameter if they are colliding prior to being set as constrained actors. ...