Force Add Rotation on Rotation-Locked actor?

Development Programming & Scripting C++
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1

I have an actor that I want to move using physics, but I don’t want to rotate in response to collisions. So I lock the rotation axes.

But I still want to be able to manually rotate this actor in code/blueprints. Add World Rotation has no effect when the axes are locked.

How can this be done?

2

Assuming you’re using an AStaticMeshActor. If not, do GetBodyInstance() on your component of choice. Regardless, not sure if this will work, but give it a try anyways:

if (FBodyInstance* BodyInstance = GetStaticMeshComponent()->GetBodyInstance())
{
    if (FPhysicsActorHandle ActorHandle = BodyInstance->ActorHandle)
    {
        if (Chaos::FGeometryParticleHandle* ParticleHandle = ActorHandle->GetHandle_LowLevel())
        {
            BodyInstance->bLockRotation = false;
            ParticleHandle->SetR(Rotation);
            BodyInstance->bLockRotation = true;
        }
    }
}

Let me know.

3

Nothing was working, so I just ended up setting the Max Angular Velocity to zero and working around it.