music player

src/main.rs

@@ -1,10 +1,11 @@
-use bevy::{audio::Volume, prelude::*};
+use bevy::prelude::*;
 
 mod animation;
 mod buttons;
 mod card;
 mod dev_tools;
 mod grid;
+mod music_player;
 mod turns;
 mod unit;
 
@@ -19,6 +20,7 @@ fn main() {
             grid::GridPlugin,
             turns::TurnSystemPlugin,
             unit::UnitPlugin,
+            music_player::MusicPlayerPlugin,
         ))
         .add_systems(Startup, setup)
         .run();
@@ -26,7 +28,6 @@ fn main() {
 
 fn setup(asset_server: Res<AssetServer>, mut commands: Commands) {
     let background = asset_server.load::<Image>("sprites/field.png");
-    let music = asset_server.load("music/fostral.wav");
 
     commands.spawn(Camera2d);
 
@@ -34,13 +35,4 @@ fn setup(asset_server: Res<AssetServer>, mut commands: Commands) {
         Sprite::from_image(background),
         Transform::from_xyz(0., 0., -100.),
     ));
-
-    commands.spawn((
-        AudioPlayer::new(music),
-        PlaybackSettings {
-            volume: Volume::Linear(0.2),
-            mode: bevy::audio::PlaybackMode::Loop,
-            ..default()
-        },
-    ));
 }

src/music_player.rs

@@ -0,0 +1,45 @@
+use bevy::{audio::Volume, prelude::*};
+use rand::random_range;
+
+pub struct MusicPlayerPlugin;
+
+impl Plugin for MusicPlayerPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Startup, setup)
+            .add_systems(Update, try_play);
+    }
+}
+
+#[derive(Resource)]
+struct Soundtrack(Vec<Handle<AudioSource>>);
+
+#[derive(Component)]
+struct MusicPlayer;
+
+fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
+    commands.insert_resource(Soundtrack(vec![
+        asset_server.load("music/fostral.wav"),
+        asset_server.load("music/glorx.wav"),
+        asset_server.load("music/rocknrolldixie.wav"),
+        asset_server.load("music/whistler.wav"),
+    ]));
+
+    commands.spawn(MusicPlayer);
+}
+
+fn try_play(
+    mut commands: Commands,
+    player: Option<Single<Entity, (With<MusicPlayer>, Without<AudioPlayer>)>>,
+    soundtrack: Res<Soundtrack>,
+) {
+    if let Some(music_player) = player {
+        commands.entity(music_player.entity()).insert((
+            AudioPlayer::new(soundtrack.0[random_range(0..soundtrack.0.len())].clone()),
+            PlaybackSettings {
+                volume: Volume::Linear(0.2),
+                mode: bevy::audio::PlaybackMode::Remove,
+                ..default()
+            },
+        ));
+    }
+}