Implement sound system

src/config/mod.rs

@@ -11,6 +11,7 @@ use std::path::PathBuf;
 pub struct Configuration {
     pub vm: VmOptions,
     pub debug: DebugOptions,
+    pub sound: SoundOptions,
 }
 
 #[derive(Clone, Deserialize, Serialize)]
@@ -23,11 +24,17 @@ pub struct DebugOptions {
     pub enable_debug_menu: bool,
 }
 
+#[derive(Clone, Deserialize, Serialize)]
+pub struct SoundOptions {
+    pub volume: f32,
+}
+
 impl Default for Configuration {
     fn default() -> Self {
         Self {
             vm: VmOptions { cycles_per_frame: 10 },
             debug: DebugOptions { enable_debug_menu: false },
+            sound: SoundOptions { volume: 0.85 },
         }
     }
 }

src/ui/options.rs

@@ -1,6 +1,6 @@
 use crate::ui::state::State;
 use notan::egui;
-use notan::egui::Window;
+use notan::egui::{Slider, Window};
 
 pub fn option_dialog(state: &mut State, ctx: &egui::Context) {
     Window::new("Options")
@@ -24,6 +24,14 @@ pub fn option_dialog(state: &mut State, ctx: &egui::Context) {
                 }
             });
 
+            ui.horizontal(|ui| {
+                ui.label("Sound volume");
+                ui.add(Slider::new(
+                    &mut state.configuration.sound.volume,
+                    0.0..=1.0,
+                ));
+            });
+
             ui.horizontal(|ui| {
                 ui.checkbox(
                     &mut state.configuration.debug.enable_debug_menu,

src/ui/state.rs

@@ -24,6 +24,9 @@ pub struct State {
     pub timer: f32,
     pub show_configuration_window: bool,
     pub cycles_per_frame: u32,
+    sound: Option<Sound>,
+    beep_audio_source: AudioSource,
+    is_beeping: bool,
 }
 
 #[derive(Parser)]
@@ -32,7 +35,7 @@ struct Args {
     file: OsString,
 }
 
-pub fn setup(gfx: &mut Graphics) -> State {
+pub fn setup(app: &mut App, gfx: &mut Graphics) -> State {
     let args = Args::parse();
 
     let file_path = if args.file.is_empty() {
@@ -78,6 +81,11 @@ pub fn setup(gfx: &mut Graphics) -> State {
 
     let config = Configuration::load().unwrap();
 
+    let audio_source = app
+        .audio
+        .create_source(include_bytes!("../../assets/beep.ogg"))
+        .expect("Failed to create audio source");
+
     State {
         last_dir,
         configuration: config.clone(),
@@ -92,6 +100,9 @@ pub fn setup(gfx: &mut Graphics) -> State {
         timer: 0.0,
         show_configuration_window: false,
         cycles_per_frame: config.vm.cycles_per_frame,
+        sound: None,
+        beep_audio_source: audio_source,
+        is_beeping: false,
     }
 }
 
@@ -123,9 +134,24 @@ pub fn update(app: &mut App, state: &mut State) {
         if state.vm.delay_timer != 0 {
             state.vm.delay_timer -= 1;
         }
-        if state.vm.sound_timer != 0 {
-            // TODO: play sound here
+
+        if state.vm.sound_timer > 0 {
+            if !state.is_beeping {
+                state.sound = Some(app.audio.play_sound(
+                    &state.beep_audio_source,
+                    state.configuration.sound.volume,
+                    true,
+                ));
+
+                state.is_beeping = true;
+            }
+
             state.vm.sound_timer -= 1;
+        } else if state.is_beeping {
+            if let Some(sound) = &state.sound {
+                app.audio.stop(sound);
+                state.is_beeping = false;
+            }
         }
     }