Volume based on multiple sources

[Roms1383]

Hi, spatialization seems to have changed a bit recently, what's the recommended approach to adjust volume from 2 different sources: Value::FromListenerDistance (set on a per-emitter basis) + Value::from_modulator (global volume player can set in settings) ?

[Roms1383]

Actually I've removed former modulator for volume by simple call to set_volume on the track.

For the emitters now I construct them this way:

pub struct Spatial(SpatialTrackHandle);

impl Spatial {
    pub fn try_new<B: Backend>(
        manager: &mut AudioManager<B>,
        listener: impl Into<ListenerId>,
        position: impl Into<Value<mint::Vector3<f32>>>,
        settings: SpatialTrackSettings,
        ambience: &Ambience,
    ) -> Result<Self, Error> {
        let SpatialTrackSettings {
            distances,
            persist_until_sounds_finish,
            attenuation_function,
            spatialization_strength,
            affected_by_reverb_mix,
            affected_by_environmental_preset,
        } = settings;
        let mut builder = SpatialTrackBuilder::new()
            .distances(distances)
            .spatialization_strength(spatialization_strength)
            .persist_until_sounds_finish(persist_until_sounds_finish)
            .attenuation_function(attenuation_function);
        if affected_by_reverb_mix {
            builder = builder.with_send(ambience.reverb(), amplitude!(0.15).as_decibels());
        }
        if affected_by_environmental_preset {
            builder = builder.with_send(ambience.environmental(), amplitude!(0.5).as_decibels());
        }
        let track = manager.add_spatial_sub_track(listener, position, builder)?;
        Ok(Self(track))
    }
}

But it seems the volume does not get softer when further away, or louder when closer on 0.10.8.
The only thing that I notice is spatial sound suddenly stops at a certain distance, most likely because NPC despawned and its handle got dropped.

Is this a bug or a simple misuse of kira on my side ?

[Roms1383]

in case it matters, I update both listener and emitter respective positions directly from their WorldPosition, in almost real-time (approximately every 15ms or so), e.g.

[2025-07-28 22:14:17.842] [audioware] [info] [sync listener [[ x: -1767.4277, y: 2146.9678, z: 18.15622, w: 1 ]]]
[2025-07-28 22:14:17.843] [audioware] [info] [sync emitter [[ x: -1752.6338, y: 2139.1873, z: 18.144371, w: 1 ]]]
# ...
[2025-07-28 22:14:37.347] [audioware] [info] [sync emitter [[ x: -1752.6338, y: 2139.1873, z: 18.144371, w: 1 ]]]
[2025-07-28 22:14:37.361] [audioware] [info] [sync listener [[ x: -1834.7886, y: 2196.3047, z: 18.200005, w: 1 ]]]

[Roms1383]

So, no it's not a bug at all, everything works as expected: my attenuation_function was None and re-reading the docs it's clearly stated, so my bad!

[Roms1383]

Also closing this question since everything was easily refactored once I looked a bit more in the docs.