VirtualCharacter movement tips please

[RoboMage]

Hey I recently got back to doing physics stuff with Jolt, but I'm having a bit of trouble with getting the movement for the VirtualCharacter to feel right. The primary issue I'm having is with my capsule sticking to objects belong edges.
(Sorry I dont have debug shapes setup yet)

While I would like to add in ledge sticking, I dont want to be sticking to the bottom side of the ledge :P
It's hard to tell from the screenshots but in movement you can basically see the shape of the capsule from the way the character rolls off the side. I tried using IsSupported, tried using the ground normals, but neither helped with this specific part. Should I be doing a raycast or something?

I'm sure the code for the tick is going to be much more complicated by the end, but for now I just want to be able to setup a fairly snappy feeling character.

Any help or tips will be greatly appreciated 😃

Here's an overly simplified version of the code:
Create:

    JPH::RefConst<JPH::Shape> shape = JPH::RotatedTranslatedShapeSettings(
        JPH::Vec3(0, half_height + radius, 0),
        JPH::Quat::sIdentity(),
        new JPH::CapsuleShapeSettings(half_height, radius)
    ).Create().Get();

    
    JPH::Ref<JPH::CharacterVirtualSettings> vchar_settings = new JPH::CharacterVirtualSettings();
    vchar_settings->mMaxSlopeAngle = JPH::DegreesToRadians(45.0f);
    vchar_settings->mMaxStrength = 1000.0f;
    vchar_settings->mShape = shape;
    vchar_settings->mBackFaceMode = JPH::EBackFaceMode::CollideWithBackFaces;
    vchar_settings->mCharacterPadding = 0.1f;
    vchar_settings->mPenetrationRecoverySpeed = 1.0f;
    vchar_settings->mPredictiveContactDistance = 0.1f;
    vchar_settings->mSupportingVolume = JPH::Plane(JPH::Vec3::sAxisY(), -radius);
    vchar_settings->mMass = 80.0f;
    vchar_settings->mInnerBodyShape = shape;
    vchar_settings->mInnerBodyLayer = Layers::MOVING;

    JPH::CharacterVirtual* vc = new JPH::CharacterVirtual(
        vchar_settings,
        pos,
        rot,
        &physics_system
    );

    vc->SetListener(new CharacterContactListener);

Tick:

    bool is_grounded = false;
    if (vc->IsSupported()) { 
        vec3 ground_normal =  vc->GetGroundNormal();

        // Tried various things using the ground normal, but didn't get anything useful
        float ground_dot = dot(ground_normal, vec3(0,1,0));
        is_grounded = true;
        if ( ground_dot < 1.0) {
            is_grounded = false;
        }
    }

    if (is_grounded) {
        velocity.y = 0.01f;  // Wasn't falling off ledges correctly when setting it to zero
    } else { // Falling
        velocity += gravity * TIME;
        velocity.y = max(velocity.y, -50.0f); // Clamp terminal velocity
    }

    vc->SetLinearVelocity(velocity);

    JPH::CharacterVirtual::ExtendedUpdateSettings update_settings;

    vc->ExtendedUpdate(
        time,
        Physics::GetGravity(),
        update_settings,
        physics_system.GetDefaultBroadPhaseLayerFilter(Layers::MOVING),
        physics_system.GetDefaultLayerFilter(Layers::MOVING),
        {},
        {},
        *temp_allocator
    );

[jrouwe]

Are you perhaps using other units than meters?

What type of thing is the character walking on, is it a box shape, or perhaps a mesh shape?

Did you try the updating logic as in the character test sample?

Your mCharacterPadding is rather huge. This can cause artifacts.

Finally you could try mEnhancedInternalEdgeRemoval = true on CharacterBaseSettings.

Implementing DebugRendererSimple should be very easy and may make it more visible what is actually happening.

[RoboMage]

Are you perhaps using other units than meters?

No it should be metric

What type of thing is the character walking on, is it a box shape, or perhaps a mesh shape?

Just a simple box, current extent is 0.3 on all axis (The capsule is half_height = 0.5, and radius = 0.25 at the moment)

Did you try the updating logic as in the character test sample?

Not yet. I'll take a swing at it later tonight if i can

Your mCharacterPadding is rather huge. This can cause artifacts.

I changed it to 0.001f and that did seem to help a fair bit

Finally you could try mEnhancedInternalEdgeRemoval = true on CharacterBaseSettings.

No difference in this case

Implementing DebugRendererSimple should be very easy and may make it more visible what is actually happening.

Just set it up

Full view (need to work on the depth for the lines)

[jrouwe]

I changed it to 0.001f and that did seem to help a fair bit

I would recommend sticking to the default value (don't explicitly initialize it and you'll get the default)