Function get_entity_hit_result 

fn get_entity_hit_result(
    world: &Arc<World>,
    from: DVec3,
    to: DVec3,
    search_box: WorldAabb,
    margin: f64,
    predicate: impl Fn(&dyn Entity) -> bool,
) -> Option<EntityHitResult>

Vanilla ProjectileUtil.getEntityHitResult (entity-margin overload): returns the nearest entity whose inflated box the segment from -> to enters.