feat(sound): added a simple sound player to the engine with api in the App struct and a component to store metadata

crates/comet_sound/Cargo.toml

@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rodio = "0.12.0"
+kira = "0.10.8"

crates/comet_sound/src/audio.rs

@@ -0,0 +1,13 @@
+pub trait Audio {
+    fn new() -> Self
+    where
+        Self: Sized;
+    fn load(&mut self, name: &str, path: &str);
+    fn play(&mut self, name: &str, looped: bool);
+    fn pause(&mut self, name: &str);
+    fn stop(&mut self, name: &str);
+    fn stop_all(&mut self);
+    fn update(&mut self, dt: f32);
+    fn is_playing(&self, name: &str) -> bool;
+    fn set_volume(&mut self, name: &str, volume: f32);
+}

crates/comet_sound/src/kira.rs

@@ -0,0 +1,86 @@
+use crate::audio::Audio;
+use kira::{
+    sound::static_sound::{StaticSoundData, StaticSoundHandle, StaticSoundSettings},
+    AudioManager, AudioManagerSettings, Decibels, Tween,
+};
+use std::{collections::HashMap, path::Path};
+
+pub struct KiraAudio {
+    manager: AudioManager,
+    sounds: HashMap<String, StaticSoundData>,
+    handles: HashMap<String, StaticSoundHandle>,
+}
+
+impl KiraAudio {
+    fn load_sound(path: &Path) -> Option<StaticSoundData> {
+        StaticSoundData::from_file(path).ok()
+    }
+}
+
+impl Audio for KiraAudio {
+    fn new() -> Self {
+        Self {
+            manager: AudioManager::new(AudioManagerSettings::default()).unwrap(),
+            sounds: HashMap::new(),
+            handles: HashMap::new(),
+        }
+    }
+
+    fn load(&mut self, name: &str, path: &str) {
+        if let Some(sound) = Self::load_sound(Path::new(path)) {
+            self.sounds.insert(name.to_string(), sound);
+        }
+    }
+
+    fn play(&mut self, name: &str, looped: bool) {
+        if let Some(sound) = self.sounds.get(name) {
+            let mut settings = StaticSoundSettings::default();
+
+            if looped {
+                settings = settings.loop_region(..);
+            }
+
+            if let Ok(handle) = self.manager.play(sound.clone().with_settings(settings)) {
+                self.handles.insert(name.to_string(), handle);
+            }
+        }
+    }
+
+    fn pause(&mut self, name: &str) {
+        if let Some(handle) = self.handles.get_mut(name) {
+            handle.pause(Tween::default());
+        }
+    }
+
+    fn stop(&mut self, name: &str) {
+        if let Some(handle) = self.handles.get_mut(name) {
+            handle.stop(Tween::default());
+        }
+    }
+
+    fn stop_all(&mut self) {
+        for handle in self.handles.values_mut() {
+            handle.stop(Tween::default());
+        }
+    }
+
+    // KiraAudio needs no updating function, it just exists to make the trait happy
+    fn update(&mut self, _dt: f32) {}
+
+    fn is_playing(&self, name: &str) -> bool {
+        self.handles.contains_key(name)
+    }
+
+    fn set_volume(&mut self, name: &str, volume: f32) {
+        let vol = volume.clamp(0.0, 1.0);
+        let db = if vol == 0.0 {
+            Decibels::from(-80.0) // effectively silent
+        } else {
+            Decibels::from(20.0 * vol.log10())
+        };
+
+        if let Some(handle) = self.handles.get_mut(name) {
+            handle.set_volume(db, Tween::default());
+        }
+    }
+}

crates/comet_sound/src/lib.rs

@@ -0,0 +1,5 @@
+mod audio;
+mod kira;
+
+pub use audio::Audio;
+pub use kira::KiraAudio;

crates/comet_sound/src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}