how do i get root rigid body from collider entity?

[Nigless]

I'm getting an entity from a raycast, and I need to get the root rigidbody from that entity. I also need to access collider properties, such as friction or mass.

[Nigless]

i use bevy rapier 3d btw.

[ThierryBerger]

From the RapierContext you can retrieve the rigidbody with https://docs.rs/bevy_rapier3d/0.28.0/bevy_rapier3d/plugin/struct.RapierContext.html#method.rigid_body_entity

To access the collider properties, as you have the Collider entity, you can query for its related components listed in https://docs.rs/bevy_rapier3d/0.28.0/bevy_rapier3d/geometry/struct.Collider.html.

[Nigless]

But what if a friction component is held by a parent of the collider?

[ThierryBerger]

Then it's not applied to the collider you're referring to. If you want to alter all colliders in a rigidbody, you can use https://docs.rs/bevy_rapier3d/latest/bevy_rapier3d/plugin/struct.RapierContext.html#method.rigid_body_colliders.