Actor Enable Collision does not affect ISM

Physics - Nov 12, 2020

The problem was reported via UE Bug Submission. I was able to repro with their provided test project. ...

Volume EncompassesPoint is broken in Chaos

Physics - Oct 26, 2020

While investigating an issue with Cull Distance Volumes, I noticed that AVolume::EncompassesPoint has a broken default implementation when WITH_PHYSX is not defined. If only chaos is enabled it will ...

Kinematic in Physics Asset Overrides Bone Scale of Skeletal Meshes

Physics - Oct 7, 2020

In a character's Physics Asset, a bone that is set to Kinematic and its children will have a scale of 1 overriding the Skeletal Mesh's Scale Transform settings. When the root of the body is changed ...

Changing the collision response type of an instanced actor using a public variable in the construction script does not change the response type

Physics - Aug 27, 2020

Changing a public variable which is setup in the construction script of an actor to set the actor's collision response type does not change the actor's collision response type. The response type rem ...

Crash when destroying a geometry collection actor

Physics - Aug 7, 2020

When an actor with geometry collection is destroyed, the engine doesn't remove elements from array in the ChaosSolver So illegal references occurs. Removing element with following quick fix code ...

Assertion failed: Engine crushes when a geometry collection hits a landscape

Physics - Jul 27, 2020

This is because THeightField::PhiWithNormal has not been implemented yet. ...

Chaos Destruction's PIE startup time increased several times from 4.23.1 to 4.25.1.

Physics - Jul 17, 2020

In response, the licensee asks the following questions.Are there any plans for improvement?Is there a workaround? ...

Collision preset in StaticmeshComponent in BP instance can not be correctly modified

Physics - Jul 3, 2020

For staticmesh component in a staticmesh actor instance, the collision preset can be modified correctly. ...