feat: Added metronome

src/main.rs

@@ -1,54 +1,57 @@
-use bevy::prelude::*;
+use std::time::Duration;
+
+use bevy::{audio::PlaybackMode, prelude::*};
+
+fn duration_from_bpm(bpm: f32) -> Duration {
+    Duration::from_millis((60_000f32 / bpm) as u64)
+}
 
 #[derive(Component)]
-struct Person;
-
-#[derive(Component)]
-struct Name(String);
+struct Metronome;
 
 #[derive(Resource)]
-struct GreetTimer(Timer);
+struct MetronomeData {
+    pub sound: Handle<AudioSource>,
+    pub timer: Timer,
+}
 
-#[derive(Resource)]
-struct UpdateTimer(Timer);
+pub struct RhythmPlugin;
 
-pub struct HelloPlugin;
-
-impl Plugin for HelloPlugin {
+impl Plugin for RhythmPlugin {
     fn build(&self, app: &mut App) {
-        app.insert_resource(GreetTimer(Timer::from_seconds(2.0, TimerMode::Repeating)));
-        app.insert_resource(UpdateTimer(Timer::from_seconds(10.0, TimerMode::Once)));
-        app.add_systems(Startup, add_people);
-        app.add_systems(Update, (update_people, greet_people).chain());
+        app.add_systems(Startup, setup_metronome)
+            .add_systems(Update, tick_metronome);
     }
 }
 
-
-fn add_people(mut commands: Commands) {
-    commands.spawn((Person, Name("Alkesey Mirnekov".to_string())));
-    commands.spawn((Person, Name("Alkesey Mirnekov 2".to_string())));
-    commands.spawn((Person, Name("Alkesey Mirnekov 3".to_string())));
+fn setup_metronome(mut commands: Commands, asset_server: Res<AssetServer>) {
+    commands.insert_resource( MetronomeData {
+        sound: asset_server.load("sfx/metronome.wav"),
+        timer: Timer::new(duration_from_bpm(120f32), TimerMode::Repeating),
+    });
+    commands.spawn(Metronome);
 }
 
-fn greet_people(time: Res<Time>, mut timer: ResMut<GreetTimer>, query: Query<&Name, With<Person>>) {
-    if timer.0.tick(time.delta()).just_finished() {
-        for name in &query {
-            println!("hello {}!", name.0);
-        }
-    }
-}
-
-fn update_people(time: Res<Time>, mut timer: ResMut<UpdateTimer>, mut query: Query<&mut Name, With<Person>>) {
-    if timer.0.tick(time.delta()).just_finished() {
-        for mut name in &mut query {
-            name.0 = format!("{} II", name.0);
-        }
+fn tick_metronome(
+    mut commands: Commands,
+    mut metronome_data: ResMut<MetronomeData>,
+    time: Res<Time>,
+    metronome: Single<Entity, With<Metronome>>,
+) {
+    if metronome_data.timer.tick(time.delta()).just_finished() {
+        commands.entity(*metronome).insert((
+            AudioPlayer::new(metronome_data.sound.clone()),
+            PlaybackSettings {
+                mode: PlaybackMode::Remove,
+                ..default()
+            }
+        ));
     }
 }
 
 fn main() {
     App::new()
     .add_plugins(DefaultPlugins)
-    .add_plugins(HelloPlugin)
+    .add_plugins(RhythmPlugin)
     .run();
 }