bevy_mod_physx 0.9.0

PhysX plugin for Bevy
Documentation 
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//! Set linear and angular damping coefficients for a rigid body.
use bevy::prelude::*;
use physx::prelude::*;

use crate::prelude::{Scene, *};

#[derive(Component, Debug, Default, PartialEq, Clone, Copy, Reflect)]
#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))]
#[reflect(Component, Default)]
/// Set linear and angular damping coefficients for a rigid body.
pub struct Damping {
    /// The linear damping coefficient associated with this actor.
    pub linear: f32,
    /// The angular damping coefficient associated with this actor.
    pub angular: f32,
}

impl Damping {
    pub fn new(linear: f32, angular: f32) -> Self {
        Self { linear, angular }
    }

    pub fn linear(linear: f32) -> Self {
        Self { linear, ..default() }
    }

    pub fn angular(angular: f32) -> Self {
        Self { angular, ..default() }
    }
}

pub struct DampingPlugin;

impl Plugin for DampingPlugin {
    fn build(&self, app: &mut App) {
        app.register_type::<Damping>();
        app.add_systems(PhysicsSchedule, damping_sync.in_set(PhysicsSet::Sync));
    }
}

pub fn damping_sync(
    mut scene: ResMut<Scene>,
    mut actors: Query<
        (
            Option<&mut RigidDynamicHandle>,
            Option<&mut ArticulationLinkHandle>,
            Ref<Damping>,
        ),
        Or<(
            Added<RigidDynamicHandle>,
            Added<ArticulationLinkHandle>,
            Changed<Damping>,
        )>,
    >,
) {
    // this function only applies user defined properties,
    // there's nothing to get back from physx engine
    for (dynamic, articulation, damping) in actors.iter_mut() {
        if let Some(mut actor) = dynamic {
            let mut actor_handle = actor.get_mut(&mut scene);
            actor_handle.set_linear_damping(damping.linear);
            actor_handle.set_angular_damping(damping.angular);
        } else if let Some(mut actor) = articulation {
            let mut actor_handle = actor.get_mut(&mut scene);
            actor_handle.set_linear_damping(damping.linear);
            actor_handle.set_angular_damping(damping.angular);
        } else if !damping.is_added() {
            bevy::log::warn!("Damping component exists, but it's neither a rigid dynamic nor articulation link");
        };
    }
}