Character does small "midair jump" when it tries to jump over a platform and comes a little short

[idanarye]

This is from my game, Gardening Gun, which uses Tnua (I've edited the level a bit so that the character will only interact with a single collider):

Peek.2023-04-12.23-40.mp4

The character is not supposed to be able to do that extra airjump to get on top of the platform.

[idanarye]

This replicates in the 3D example:

Peek.2023-04-16.16-23.mp4

And when I add debug rendering:

Peek.2023-04-16.16-26.mp4

WTF?

[idanarye]

This definitely has something to do with the sensor shape. When I reduce the flat-underfit radius from 0.49 to 0.4 I get a much smaller climb effect:

Peek.2023-04-16.16-57.mp4

Whereas with radius 0.3 I get no climb effect at all.

[idanarye]

Thinking that maybe the Rapier transforms were not synchronized with the Bevy transforms when I perform the cast, I tried adding this to update_proximity_sensors_system:

if let Some(rigid_body) = rapier_context.entity2body().get(&owner_entity).and_then(|h| rapier_context.bodies.get(*h)) {
    let rigid_body_translation = Vec3::from_slice(rigid_body.translation().as_slice());
    assert_eq!(rigid_body_translation, transform.translation());
}
if let Some(collider) = rapier_context.entity2collider().get(&owner_entity).and_then(|h| rapier_context.colliders.get(*h)) {
    let collider_translation = Vec3::from_slice(collider.translation().as_slice());
    assert_eq!(collider_translation, transform.translation());
}

But it did not panic.

[idanarye]

It looks like the character's collider gets pushed a bit into the other collider, which breaks stuff. To solve this, I'm going to have to check for contacts when filtering the entities.