Release

.envrc

@@ -0,0 +1 @@
+use flake

.gitea/workflows/test.yml

@@ -6,11 +6,7 @@ on:
 
 jobs:
   test:
-    strategy:
+    runs-on: ubuntu-latest
-      matrix:
-        # os: [windows-latest, ubuntu-latest, macos-latest]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/cache@v4
@@ -26,12 +22,7 @@ jobs:
             ~/.cargo/git/db/
             target/
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-      - uses: dtolnay/rust-toolchain@master
+      - name: Install Nix
-        with:
+        uses: https://github.com/cachix/install-nix-action@v31
-          toolchain: stable
+      - name: Test
-          components: rustfmt, clippy
+        run: nix develop --command pre-commit run -a
-      - name: install Linux build dependencies
-        run: sudo apt-get update; sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev libwayland-dev libclang-dev cmake
-        if: runner.os == 'linux'
-      - uses: actions/setup-python@v3
-      - uses: pre-commit/action@v3.0.1

.gitignore

@@ -1,3 +1,4 @@
 /target
 *.dll
-Cargo.lock
+Cargo.lock
+.direnv

CHANGELOG.md

@@ -2,6 +2,39 @@
 
 All notable changes to this project will be documented in this file.
 
+## Version 0.10.0 - 2025-05-16
+
+### Miscellaneous Tasks
+
+- Add Nix-based build and CI configuration.
+- Update to Bevy 0.16.
+
+## Version 0.9.1 - 2025-01-07
+
+### Miscellaneous Tasks
+
+- Don't set position if values are NaN.
+
+## Version 0.9.0 - 2024-12-06
+
+### Miscellaneous Tasks
+
+- Upgrade to Bevy 0.15.
+
+## Version 0.8.0 - 2024-12-02
+
+### Bug Fixes
+
+- Clear generator when source is cleared, and improve handling for changing source types.
+
+### Features
+
+- Add `Sound.playback_position` to support initializing new buffers at non-zero playback position.
+
+### Miscellaneous Tasks
+
+- Clean up code.
+
 ## Version 0.7.0 - 2024-07-07
 
 ### Miscellaneous Tasks

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bevy_synthizer"
-version = "0.7.0"
+version = "0.10.0"
 authors = ["Nolan Darilek <nolan@thewordnerd.info>"]
 description = "A Bevy plugin for Synthizer, a library for 3D audio and synthesis with a focus on games and VR applications"
 license = "MIT OR Apache-2.0"
@@ -10,12 +10,12 @@ repository = "https://labs.lightsout.games/projects/bevy_synthizer"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-bevy = { version = "0.14", default-features = false, features = ["bevy_asset"] }
+bevy = { version = "0.16", default-features = false, features = ["bevy_asset"] }
 synthizer = "0.5.6"
-thiserror = "1"
+thiserror = "2"
 
 [dev-dependencies]
-bevy = { version = "0.14", default-features = true }
+bevy = { version = "0.16", default-features = true }
 
 [package.metadata.release]
 publish = false

examples/buffer.rs

@@ -31,14 +31,10 @@ fn load_and_create(
     if !listeners.is_empty() {
         return;
     }
-    commands.spawn((
+    commands.spawn((Transform::default(), Listener, RotationTimer::default()));
-        TransformBundle::default(),
-        Listener,
-        RotationTimer::default(),
-    ));
     let handle = asset_server.load("footstep.wav");
     commands.spawn((
-        TransformBundle::from(Transform::from_translation(Vec3::new(10., 0., 0.))),
+        Transform::from_translation(Vec3::new(10., 0., 0.)),
         Source::default(),
         Sound {
             audio: handle.into(),

examples/generator.rs

@@ -13,16 +13,12 @@ impl Default for RotationTimer {
 }
 
 fn setup(mut commands: Commands, context: Res<Context>) {
-    commands.spawn((
+    commands.spawn((Transform::default(), Listener, RotationTimer::default()));
-        TransformBundle::default(),
-        Listener,
-        RotationTimer::default(),
-    ));
     let generator: syz::Generator = syz::FastSineBankGenerator::new_sine(&context, 440.)
         .expect("Failed to create generator")
         .into();
     commands.spawn((
-        TransformBundle::from(Transform::from_translation(Vec3::new(10., 0., 0.))),
+        Transform::from_translation(Vec3::new(10., 0., 0.)),
         Source::default(),
         Sound {
             audio: generator.into(),

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1747312588,
+        "narHash": "sha256-MmJvj6mlWzeRwKGLcwmZpKaOPZ5nJb/6al5CXqJsgjo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b1bebd0fe266bbd1820019612ead889e96a8fa2d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,54 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      utils,
+    }:
+    utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShell =
+          with pkgs;
+          mkShell.override { stdenv = pkgs.clangStdenv; } rec {
+            nativeBuildInputs = [
+              cargo
+              rustc
+              rustfmt
+              rustPackages.clippy
+              cmake
+              pkg-config
+              pre-commit
+              git-cliff
+              cargo-release
+              cargo-outdated
+            ];
+            buildInputs = [
+              udev
+              alsa-lib
+              vulkan-loader
+              xorg.libX11
+              xorg.libXcursor
+              xorg.libXi
+              xorg.libXrandr
+              libxkbcommon
+              wayland
+            ];
+            shellHook = ''
+              export LIBCLANG_PATH="${pkgs.libclang.lib}/lib"
+              export RUSTFLAGS="-C link-arg=-Wl,-rpath,${lib.makeLibraryPath buildInputs}"
+              pre-commit install
+            '';
+            RUST_SRC_PATH = rustPlatform.rustLibSrc;
+          };
+      }
+    );
+}

src/lib.rs

@@ -2,9 +2,8 @@
 use std::collections::HashMap;
 
 use bevy::{
-    asset::{io::Reader, AssetLoader, AsyncReadExt, LoadContext},
+    asset::{io::Reader, AssetLoader, LoadContext},
     prelude::*,
-    reflect::TypePath,
     transform::TransformSystem,
 };
 pub use synthizer as syz;
@@ -30,11 +29,11 @@ impl AssetLoader for BufferAssetLoader {
     type Settings = ();
     type Error = BufferAssetLoaderError;
 
-    async fn load<'a>(
+    async fn load(
-        &'a self,
+        &self,
-        reader: &'a mut Reader<'_>,
+        reader: &mut dyn Reader,
-        _settings: &'a (),
+        _settings: &(),
-        _load_context: &'a mut LoadContext<'_>,
+        _load_context: &mut LoadContext<'_>,
     ) -> Result<Self::Asset, Self::Error> {
         let mut bytes = Vec::new();
         reader.read_to_end(&mut bytes).await?;
@@ -156,6 +155,7 @@ pub struct Sound {
     pub gain: f64,
     pub pitch: f64,
     pub looping: bool,
+    pub playback_position: f64,
     pub paused: bool,
     pub generator: Option<syz::Generator>,
 }
@@ -167,6 +167,7 @@ impl Default for Sound {
             gain: 1.,
             pitch: 1.,
             looping: false,
+            playback_position: default(),
             paused: false,
             generator: None,
         }
@@ -187,7 +188,7 @@ fn update_listener(
     context: ResMut<Context>,
     listener: Query<Option<&GlobalTransform>, With<Listener>>,
 ) {
-    if let Ok(transform) = listener.get_single() {
+    if let Ok(transform) = listener.single() {
         let transform: Transform = transform
             .map(|v| {
                 let transform: Transform = (*v).into();
@@ -229,101 +230,109 @@ fn add_source_handle(
     )>,
 ) {
     for (mut source, panner_strategy, transform, angular_pan, scalar_pan) in &mut query {
-        if source.handle.is_none() {
+        if source.handle.is_some() {
-            let panner_strategy = panner_strategy.cloned().unwrap_or_default();
+            continue;
-            let handle: syz::Source = if let Some(transform) = transform {
-                let translation = transform.translation();
-                syz::Source3D::new(
-                    &context,
-                    *panner_strategy,
-                    (
-                        translation.x as f64,
-                        translation.y as f64,
-                        translation.z as f64,
-                    ),
-                )
-                .expect("Failed to create source")
-                .into()
-            } else if let Some(scalar_pan) = scalar_pan {
-                syz::ScalarPannedSource::new(&context, *panner_strategy, **scalar_pan)
-                    .expect("Failed to create source")
-                    .into()
-            } else if let Some(angular_pan) = angular_pan {
-                syz::AngularPannedSource::new(
-                    &context,
-                    *panner_strategy,
-                    angular_pan.azimuth,
-                    angular_pan.elevation,
-                )
-                .expect("Failed to create source")
-                .into()
-            } else {
-                syz::DirectSource::new(&context)
-                    .expect("Failed to create source")
-                    .into()
-            };
-            source.handle = Some(handle);
         }
+        let panner_strategy = panner_strategy.cloned().unwrap_or_default();
+        let handle: syz::Source = if let Some(transform) = transform {
+            let translation = transform.translation();
+            syz::Source3D::new(
+                &context,
+                *panner_strategy,
+                (
+                    translation.x as f64,
+                    translation.y as f64,
+                    translation.z as f64,
+                ),
+            )
+            .expect("Failed to create source")
+            .into()
+        } else if let Some(scalar_pan) = scalar_pan {
+            syz::ScalarPannedSource::new(&context, *panner_strategy, **scalar_pan)
+                .expect("Failed to create source")
+                .into()
+        } else if let Some(angular_pan) = angular_pan {
+            syz::AngularPannedSource::new(
+                &context,
+                *panner_strategy,
+                angular_pan.azimuth,
+                angular_pan.elevation,
+            )
+            .expect("Failed to create source")
+            .into()
+        } else {
+            syz::DirectSource::new(&context)
+                .expect("Failed to create source")
+                .into()
+        };
+        source.handle = Some(handle);
     }
 }
 
 fn add_generator(
     context: Res<Context>,
     buffers: Res<Assets<Buffer>>,
-    mut query: Query<(Entity, Option<&Parent>, &mut Sound)>,
+    mut query: Query<(Entity, Option<&ChildOf>, &mut Sound)>,
     mut sources: Query<&mut Source>,
-    parents: Query<&Parent>,
+    parents: Query<&ChildOf>,
 ) {
     for (entity, parent, mut sound) in &mut query {
-        if sound.generator.is_none() {
+        if sound.generator.is_some() {
-            let mut source = if let Ok(s) = sources.get_mut(entity) {
+            continue;
-                Some(s)
+        }
-            } else if parent.is_some() {
+        let mut source = if let Ok(s) = sources.get_mut(entity) {
-                let mut parent = parent;
+            Some(s)
-                let mut target = None;
+        } else if parent.is_some() {
-                while let Some(p) = parent {
+            let mut parent = parent;
-                    if sources.get(**p).is_ok() {
+            let mut target = None;
-                        target = Some(**p);
+            while let Some(p) = parent {
-                        break;
+                if sources.get(p.parent()).is_ok() {
-                    }
+                    target = Some(p.parent());
-                    parent = parents.get(**p).ok();
+                    break;
                 }
-                target.map(|v| sources.get_mut(v).unwrap())
+                parent = parents.get(p.parent()).ok();
-            } else {
+            }
-                None
+            target.map(|v| sources.get_mut(v).unwrap())
-            };
+        } else {
-            if let Some(source) = source.as_mut() {
+            None
-                if let Some(handle) = source.handle.as_mut() {
+        };
-                    let generator: Option<syz::Generator> = match &sound.audio {
+        if let Some(source) = source.as_mut() {
-                        Audio::Buffer(buffer) => {
+            if let Some(handle) = source.handle.as_mut() {
-                            if let Some(b) = buffers.get(buffer) {
+                let generator: Option<syz::Generator> = match &sound.audio {
-                                let generator = syz::BufferGenerator::new(&context)
+                    Audio::Buffer(buffer) => {
-                                    .expect("Failed to create generator");
+                        if let Some(b) = buffers.get(buffer) {
-                                generator.buffer().set(&**b).expect("Unable to set buffer");
+                            let generator = syz::BufferGenerator::new(&context)
-                                Some(generator.into())
+                                .expect("Failed to create generator");
-                            } else {
+                            generator.buffer().set(&**b).expect("Unable to set buffer");
-                                None
+                            assert!(sound.playback_position >= 0.);
-                            }
+                            generator
+                                .playback_position()
+                                .set(sound.playback_position)
+                                .expect("Failed to set playback position");
+                            Some(generator.into())
+                        } else {
+                            None
                         }
-                        Audio::Generator(generator) => Some(generator.clone()),
-                    };
-                    if let Some(generator) = generator {
-                        assert!(sound.gain >= 0.);
-                        generator
-                            .gain()
-                            .set(sound.gain)
-                            .expect("Failed to set gain");
-                        assert!(sound.pitch > 0. && sound.pitch <= 2.);
-                        generator
-                            .pitch_bend()
-                            .set(sound.pitch)
-                            .expect("Failed to set pitch");
-                        handle
-                            .add_generator(generator.handle())
-                            .expect("Unable to add generator");
-                        sound.generator = Some(generator);
                     }
-                }
+                    Audio::Generator(generator) => Some(generator.clone()),
+                };
+                let Some(generator) = generator else {
+                    continue;
+                };
+                assert!(sound.gain >= 0.);
+                generator
+                    .gain()
+                    .set(sound.gain)
+                    .expect("Failed to set gain");
+                assert!(sound.pitch > 0. && sound.pitch <= 2.);
+                generator
+                    .pitch_bend()
+                    .set(sound.pitch)
+                    .expect("Failed to set pitch");
+                handle
+                    .add_generator(generator.handle())
+                    .expect("Unable to add generator");
+                sound.generator = Some(generator);
             }
         }
     }
@@ -332,7 +341,7 @@ fn add_generator(
 fn add_sound_without_source(
     mut commands: Commands,
     query: Query<Entity, (Added<Sound>, Without<Source>)>,
-    parents: Query<(&Parent, Option<&Source>)>,
+    parents: Query<(&ChildOf, Option<&Source>)>,
 ) {
     for entity in &query {
         let mut has_source = false;
@@ -342,7 +351,7 @@ fn add_sound_without_source(
                 has_source = true;
                 break;
             }
-            target = **parent;
+            target = parent.parent();
         }
         if !has_source {
             commands.entity(entity).insert(Source::default());
@@ -361,6 +370,7 @@ fn swap_buffers(
         if let Some(l) = last_audio.get(&entity) {
             if sound.generator.is_some() && sound.audio != *l {
                 sound.generator = None;
+                sound.playback_position = 0.;
             }
         }
         last_audio.insert(entity, sound.audio.clone());
@@ -382,10 +392,11 @@ fn change_panner_strategy(
         check.push(entity);
     }
     for entity in check.iter() {
-        if let Ok(mut source) = sources.get_mut(*entity) {
+        let Ok(mut source) = sources.get_mut(*entity) else {
-            if source.handle.is_some() {
+            continue;
-                source.handle = None;
+        };
-            }
+        if source.handle.is_some() {
+            source.handle = None;
         }
     }
 }
@@ -403,6 +414,7 @@ fn update_source_properties(
         Option<&AngularPan>,
         Option<&ScalarPan>,
         Option<&GlobalTransform>,
+        Option<&mut Sound>,
     )>,
 ) {
     for (
@@ -416,16 +428,20 @@ fn update_source_properties(
         angular_pan,
         scalar_pan,
         transform,
+        sound,
     ) in &mut query
     {
         let Source { gain, .. } = *source;
         assert!(gain >= 0.);
-        if let Some(handle) = source.handle.as_mut() {
+        let Some(handle) = source.handle.as_mut() else {
-            handle.gain().set(gain).expect("Failed to set gain");
+            continue;
-            let mut clear_source = false;
+        };
+        handle.gain().set(gain).expect("Failed to set gain");
+        let mut clear_source = false;
+        if let Some(source) = handle.cast_to::<syz::Source3D>().expect("Failed to cast") {
             if let Some(transform) = transform {
-                if let Some(source) = handle.cast_to::<syz::Source3D>().expect("Failed to cast") {
+                let translation = transform.translation();
-                    let translation = transform.translation();
+                if !translation.x.is_nan() && !translation.y.is_nan() && !translation.z.is_nan() {
                     source
                         .position()
                         .set((
@@ -434,92 +450,106 @@ fn update_source_properties(
                             translation.z as f64,
                         ))
                         .expect("Failed to set position");
-                    let distance_model = distance_model
-                        .cloned()
-                        .map(|v| *v)
-                        .unwrap_or_else(|| context.default_distance_model().get().unwrap());
-                    source
-                        .distance_model()
-                        .set(distance_model)
-                        .expect("Failed to set distance_model");
-                    let distance_ref = distance_ref
-                        .map(|v| **v)
-                        .unwrap_or_else(|| context.default_distance_ref().get().unwrap());
-                    assert!(distance_ref >= 0.);
-                    source
-                        .distance_ref()
-                        .set(distance_ref)
-                        .expect("Failed to set distance_ref");
-                    let distance_max = distance_max
-                        .map(|v| **v)
-                        .unwrap_or_else(|| context.default_distance_max().get().unwrap());
-                    assert!(distance_max >= 0.);
-                    source
-                        .distance_max()
-                        .set(distance_max)
-                        .expect("Failed to set distance_max");
-                    let rolloff = rolloff
-                        .map(|v| **v)
-                        .unwrap_or_else(|| context.default_rolloff().get().unwrap());
-                    assert!(rolloff >= 0.);
-                    source
-                        .rolloff()
-                        .set(rolloff)
-                        .expect("Failed to set rolloff");
-                    let closeness_boost = closeness_boost
-                        .map(|v| **v)
-                        .unwrap_or_else(|| context.default_closeness_boost().get().unwrap());
-                    assert!(closeness_boost >= 0.);
-                    source
-                        .closeness_boost()
-                        .set(closeness_boost)
-                        .expect("Failed to set closeness_boost");
-                    let closeness_boost_distance =
-                        closeness_boost_distance.map(|v| **v).unwrap_or_else(|| {
-                            context.default_closeness_boost_distance().get().unwrap()
-                        });
-                    assert!(closeness_boost_distance >= 0.);
-                    source
-                        .closeness_boost_distance()
-                        .set(closeness_boost_distance)
-                        .expect("Failed to set closeness_boost_distance");
-                } else {
-                    clear_source = true;
-                }
-            } else if let Some(angular_pan) = angular_pan {
-                if let Some(source) = handle
-                    .cast_to::<syz::AngularPannedSource>()
-                    .expect("Failed to cast")
-                {
-                    assert!(angular_pan.azimuth >= 0. && angular_pan.azimuth <= 360.);
-                    source
-                        .azimuth()
-                        .set(angular_pan.azimuth)
-                        .expect("Failed to set azimuth");
-                    assert!(angular_pan.elevation >= -90. && angular_pan.elevation <= 90.);
-                    source
-                        .elevation()
-                        .set(angular_pan.elevation)
-                        .expect("Failed to set elevation");
-                } else {
-                    clear_source = true;
-                }
-            } else if let Some(scalar_pan) = scalar_pan {
-                if let Some(source) = handle
-                    .cast_to::<syz::ScalarPannedSource>()
-                    .expect("Failed to cast")
-                {
-                    assert!(**scalar_pan >= -1. && **scalar_pan <= 1.);
-                    source
-                        .panning_scalar()
-                        .set(**scalar_pan)
-                        .expect("Failed to set scalar panning");
-                } else {
-                    clear_source = true;
                 }
+                let distance_model = distance_model
+                    .cloned()
+                    .map(|v| *v)
+                    .unwrap_or_else(|| context.default_distance_model().get().unwrap());
+                source
+                    .distance_model()
+                    .set(distance_model)
+                    .expect("Failed to set distance_model");
+                let distance_ref = distance_ref
+                    .map(|v| **v)
+                    .unwrap_or_else(|| context.default_distance_ref().get().unwrap());
+                assert!(distance_ref >= 0.);
+                source
+                    .distance_ref()
+                    .set(distance_ref)
+                    .expect("Failed to set distance_ref");
+                let distance_max = distance_max
+                    .map(|v| **v)
+                    .unwrap_or_else(|| context.default_distance_max().get().unwrap());
+                assert!(distance_max >= 0.);
+                source
+                    .distance_max()
+                    .set(distance_max)
+                    .expect("Failed to set distance_max");
+                let rolloff = rolloff
+                    .map(|v| **v)
+                    .unwrap_or_else(|| context.default_rolloff().get().unwrap());
+                assert!(rolloff >= 0.);
+                assert!(rolloff >= 0.);
+                source
+                    .rolloff()
+                    .set(rolloff)
+                    .expect("Failed to set rolloff");
+                let closeness_boost = closeness_boost
+                    .map(|v| **v)
+                    .unwrap_or_else(|| context.default_closeness_boost().get().unwrap());
+                assert!(closeness_boost >= 0.);
+                source
+                    .closeness_boost()
+                    .set(closeness_boost)
+                    .expect("Failed to set closeness_boost");
+                let closeness_boost_distance = closeness_boost_distance
+                    .map(|v| **v)
+                    .unwrap_or_else(|| context.default_closeness_boost_distance().get().unwrap());
+                assert!(closeness_boost_distance >= 0.);
+                source
+                    .closeness_boost_distance()
+                    .set(closeness_boost_distance)
+                    .expect("Failed to set closeness_boost_distance");
+            } else {
+                clear_source = true;
             }
-            if clear_source {
+        } else if let Some(source) = handle
-                source.handle = None;
+            .cast_to::<syz::AngularPannedSource>()
+            .expect("Failed to cast")
+        {
+            if let Some(angular_pan) = angular_pan {
+                assert!(angular_pan.azimuth >= 0. && angular_pan.azimuth <= 360.);
+                source
+                    .azimuth()
+                    .set(angular_pan.azimuth)
+                    .expect("Failed to set azimuth");
+                assert!(angular_pan.elevation >= -90. && angular_pan.elevation <= 90.);
+                source
+                    .elevation()
+                    .set(angular_pan.elevation)
+                    .expect("Failed to set elevation");
+            } else {
+                clear_source = true;
+            }
+        } else if let Some(source) = handle
+            .cast_to::<syz::ScalarPannedSource>()
+            .expect("Failed to cast")
+        {
+            if let Some(scalar_pan) = scalar_pan {
+                assert!(**scalar_pan >= -1. && **scalar_pan <= 1.);
+                source
+                    .panning_scalar()
+                    .set(**scalar_pan)
+                    .expect("Failed to set scalar panning");
+            } else {
+                clear_source = true;
+            }
+        } else if handle
+            .cast_to::<syz::DirectSource>()
+            .expect("Failed to cast")
+            .is_some()
+        {
+            if transform.is_some() || angular_pan.is_some() || scalar_pan.is_some() {
+                clear_source = true;
+            }
+        } else if source.handle.is_some() {
+            clear_source = true;
+        }
+        if clear_source {
+            source.handle = None;
+            if let Some(mut sound) = sound {
+                sound.generator = None;
+                sound.playback_position = 0.;
             }
         }
     }
@@ -535,45 +565,60 @@ fn update_sound_properties(mut query: Query<&mut Sound>) {
         } = *sound;
         assert!(gain >= 0.);
         assert!(pitch > 0. && pitch <= 2.);
-        if let Some(generator) = sound.generator.as_mut() {
+        let Some(generator) = &sound.generator else {
-            generator.gain().set(gain).expect("Failed to set gain");
+            continue;
+        };
+        if let Some(generator) = generator
+            .cast_to::<syz::BufferGenerator>()
+            .expect("Failed to cast")
+        {
+            sound.playback_position = generator
+                .playback_position()
+                .get()
+                .expect("Failed to getplayback position");
+        }
+        let Some(generator) = sound.generator.as_mut() else {
+            continue;
+        };
+        generator.gain().set(gain).expect("Failed to set gain");
+        generator
+            .pitch_bend()
+            .set(pitch)
+            .expect("Failed to set pitch");
+        if let Some(generator) = generator
+            .cast_to::<syz::BufferGenerator>()
+            .expect("Failed to cast")
+        {
             generator
-                .pitch_bend()
+                .looping()
-                .set(pitch)
+                .set(looping)
-                .expect("Failed to set pitch");
+                .expect("Failed to set looping");
-            if let Some(generator) = generator
-                .cast_to::<syz::BufferGenerator>()
-                .expect("Failed to cast")
-            {
-                generator
-                    .looping()
-                    .set(looping)
-                    .expect("Failed to set looping");
-            }
         }
     }
 }
 
 fn update_source_playback_state(query: Query<&Source>) {
     for source in &query {
-        if let Some(handle) = &source.handle {
+        let Some(handle) = &source.handle else {
-            if source.paused {
+            continue;
-                handle.pause().expect("Failed to pause");
+        };
-            } else {
+        if source.paused {
-                handle.play().expect("Failed to play");
+            handle.pause().expect("Failed to pause");
-            }
+        } else {
+            handle.play().expect("Failed to play");
         }
     }
 }
 
 fn update_sound_playback_state(query: Query<&Sound>) {
     for sound in &query {
-        if let Some(generator) = &sound.generator {
+        let Some(generator) = &sound.generator else {
-            if sound.paused {
+            continue;
-                generator.pause().expect("Failed to pause");
+        };
-            } else {
+        if sound.paused {
-                generator.play().expect("Failed to play");
+            generator.pause().expect("Failed to pause");
-            }
+        } else {
+            generator.play().expect("Failed to play");
         }
     }
 }
@@ -654,22 +699,24 @@ fn events(
     mut output: EventWriter<SynthizerEvent>,
 ) {
     context.get_events().for_each(|event| {
-        if let Ok(event) = event {
+        let Ok(event) = event else {
-            for (entity, sound) in &sounds {
+            return;
-                if let Some(generator) = &sound.generator {
+        };
-                    if *generator.handle() == event.source {
+        for (entity, sound) in &sounds {
-                        match event.r#type {
+            let Some(generator) = &sound.generator else {
-                            syz::EventType::Finished => {
+                continue;
-                                output.send(SynthizerEvent::Finished(entity));
+            };
-                            }
+            if *generator.handle() == event.source {
-                            syz::EventType::Looped => {
+                match event.r#type {
-                                output.send(SynthizerEvent::Looped(entity));
+                    syz::EventType::Finished => {
-                            }
+                        output.write(SynthizerEvent::Finished(entity));
-                            _ => {}
-                        }
-                        break;
                     }
+                    syz::EventType::Looped => {
+                        output.write(SynthizerEvent::Looped(entity));
+                    }
+                    _ => {}
                 }
+                break;
             }
         }
     });