Struct ContactEvent 

pub struct ContactEvent {
    pub a: Entity,
    pub b: Option<Entity>,
    pub point: [f32; 3],
    pub normal: [f32; 3],
    pub impulse: f32,
}

Runtime-only event published by the physics system when two bodies collide hard enough to pass the world’s contact impulse threshold. a is always a simulated prop entity; b is the other side’s entity, or None when the other body has no entity (terrain, the floor slab, a character capsule). normal points from a’s surface toward b; impulse is the contact’s total impulse magnitude (mass times velocity change). World authors never declare this type directly.

Fields

a: Entity

The simulated prop entity on one side of the contact.

b: Option<Entity>

The other side’s entity, or None when that body has none.

point: [f32; 3]

World-space contact point.

normal: [f32; 3]

Contact normal, pointing from a’s surface toward b.

impulse: f32

Total contact impulse magnitude (mass times velocity change).

Trait Implementations

impl Clone for ContactEvent

fn clone(&self) -> ContactEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ContactEvent

impl Debug for ContactEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.