mute cell on placement

.gitignore

@@ -1,3 +1,4 @@
 .direnv/
 **/target/
 dist/*
+result

life/src/main.rs

@@ -496,13 +496,30 @@ enum Lifecycle {
     Dead(Entity),
 }
 
-fn new_cell(Coordinates { x, y }: Coordinates, cell_assets: &Res<CellAssets>) -> impl Scene {
+fn new_cell(
+    Coordinates { x, y }: Coordinates,
+    cell_assets: &Res<CellAssets>,
+    sinks: &Query<Entity, With<AudioSink>>,
+    sim_state: &Res<State<SimulationPlayback>>,
+    audio_state: &Res<State<AudioPlayback>>,
+) -> impl Scene {
     let c = Coordinates { x, y };
 
+    let volume = {
+        if *sim_state.get() == SimulationPlayback::Run && *audio_state.get() == AudioPlayback::Play {
+            let ratio = 1.0 / (sinks.count() + 1) as f32;
+            Volume::Linear(ratio)
+        } else {
+            Volume::SILENT
+        }
+    };
+
+    let playback_settings = PlaybackSettings::ONCE.with_volume(volume);
+
     bsn! {
         Cell
         Coordinates { x, y }
-        PlaybackSettings::ONCE
+        template_value(playback_settings)
         template_value(Transform::from_translation(c.as_translation() + Vec3::new(0.0, 0.0, 1.0)))
         template_value(AudioPlayerTemplate(cell_assets.pitches.get(&c.as_cell_pitch()).unwrap().clone().into()))
         template_value(Mesh2dTemplate(cell_assets.mesh.clone().into()))
@@ -514,12 +531,21 @@ fn cell_lifecycle(
     mut reader: MessageReader<Lifecycle>,
     mut commands: Commands,
     cell_assets: Res<CellAssets>,
+    query: Query<Entity, With<AudioSink>>,
+    sim_state: Res<State<SimulationPlayback>>,
+    audio_state: Res<State<AudioPlayback>>,
 ) {
     reader.read().for_each(|msg| match msg {
         Lifecycle::Alive(c) => {
             debug!("creating {:?}", c);
             // TODO: Safeguard: ensure no other cell there?
-            commands.spawn_scene(new_cell(c.clone(), &cell_assets));
+            commands.spawn_scene(new_cell(
+                c.clone(),
+                &cell_assets,
+                &query,
+                &sim_state,
+                &audio_state,
+            ));
         }
         Lifecycle::Dead(e) => {
             commands.entity(*e).despawn();
@@ -632,17 +658,28 @@ fn load_audio_tones(mut pitches: ResMut<Assets<Pitch>>, mut cell_assets: ResMut<
     debug_assert!(cell_assets.pitches.iter().len() == 25);
 }
 
-fn control_volume(state: ResMut<State<AudioPlayback>>, mut sinks: Query<&mut AudioSink>) {
-    match state.get() {
-        AudioPlayback::Play => {
-            let ratio = 1.0 / sinks.count() as f32;
-            let volume = Volume::Linear(ratio);
-            sinks.iter_mut().for_each(|mut sink| {
-                sink.set_volume(volume);
-            })
-        }
-        AudioPlayback::Mute => sinks.iter_mut().for_each(|mut sink| {
-            sink.set_volume(Volume::SILENT);
+fn control_volume(
+    audio_state: Res<State<AudioPlayback>>,
+    simulation_state: Res<State<SimulationPlayback>>,
+    mut sinks: Query<&mut AudioSink>,
+) {
+    match audio_state.get() {
+        AudioPlayback::Play => match simulation_state.get() {
+            SimulationPlayback::Run => {
+                let ratio = 1.0 / sinks.count() as f32;
+                let volume = Volume::Linear(ratio);
+                sinks.par_iter_mut().for_each(|mut sink| {
+                    sink.set_volume(volume);
+                })
+            }
+            SimulationPlayback::Pause | SimulationPlayback::Step => {
+                sinks.par_iter_mut().for_each(|mut sink| {
+                    sink.mute();
+                })
+            }
+        },
+        AudioPlayback::Mute => sinks.par_iter_mut().for_each(|mut sink| {
+            sink.mute();
         }),
     }
 }