Cannot set KinematicCharacterController.up to the negative Y axis

[mhcerri]

In my project I have the origin point located at the top left corn of the window and because of that I'm trying to invert the default up value in the KinematicCharacterController, ie:

let controller = KinematicCharacterController {
    up: -Vector::y_axis(),
    ..Default::default()
};

Or:

let controller = KinematicCharacterController {
    up: Unit::new_normalize(vector![0.0, -1.0]),
    ..Default::default()
};

In both cases I get the following panic when calling move_shape():

thread 'main' panicked at 'The loosening margin must be positive.', /home/mhcerri/.cargo/registry/src/github.com-1ecc6299db9ec823/parry2d-0.13.4/src/boundin\
g_volume/aabb.rs:546:9

If I replace -1.0 with 1.0 in the examples above they don't panic, but then autostep and snap to the ground features don't work properly in my scenario (unless if I make the character to walk on the ceiling :-D).

[da-shalev]

I'm having the same issue.