learn-wgpu/code/showcase/pong/src/sound.rs

use std::io::Cursor;

const BOUNCE_BYTES: &[u8] = include_bytes!("../res/sounds/4362__noisecollector__pongblipa-4.wav");

pub struct SoundSystem {
    #[allow(dead_code)]
    stream: rodio::OutputStream,
    #[allow(dead_code)]
    stream_handle: rodio::OutputStreamHandle,
    sink: rodio::Sink,
    spatial_sink: rodio::SpatialSink,
}

impl SoundSystem {
    pub fn new() -> Self {
        let (stream, stream_handle) = rodio::OutputStream::try_default().unwrap();
        let sink = rodio::Sink::try_new(&stream_handle).unwrap();
        sink.set_volume(0.5);

        let spatial_sink = rodio::SpatialSink::try_new(
            &stream_handle,
            [0.0, 0.0, 0.0],
            [-1.0, 0.0, 0.0],
            [1.0, 0.0, 0.0],
        )
        .unwrap();

        Self {
            stream,
            stream_handle,
            sink,
            spatial_sink,
        }
    }

    #[inline]
    pub fn queue<S>(&self, sound: S)
    where
        S: rodio::Source + Send + 'static,
        S::Item: rodio::Sample,
        S::Item: Send,
    {
        self.sink.append(sound);
    }

    #[allow(dead_code)]
    #[inline]
    pub fn queue_spatial<S>(&self, sound: S, position: [f32; 3])
    where
        S: rodio::Source + Send + 'static,
        S::Item: rodio::Sample + Send + std::fmt::Debug,
    {
        self.spatial_sink.set_emitter_position(position);
        self.spatial_sink.append(sound);
    }
}

pub struct SoundPack {
    bounce: Cursor<&'static [u8]>,
}

impl SoundPack {
    pub fn new() -> Self {
        Self {
            bounce: Cursor::new(BOUNCE_BYTES),
        }
    }

    pub fn bounce(&self) -> rodio::Decoder<Cursor<&'static [u8]>> {
        rodio::Decoder::new(self.bounce.clone()).unwrap()
    }
}