use std::io::BufReader; use std::thread; use std::time::Duration; use rodio::Source; fn main() { let iter_duration = Duration::from_secs(5); let iter_distance = 5.; let refresh_duration = Duration::from_millis(10); let num_steps = iter_duration.as_secs_f32() / refresh_duration.as_secs_f32(); let step_distance = iter_distance / num_steps; let num_steps = num_steps as u32; let repeats = 5; let total_duration = iter_duration * 2 * repeats; let stream_handle = rodio::OutputStreamBuilder::try_default_stream().expect("open default audio stream"); let mut positions = ([0., 0., 0.], [-1., 0., 0.], [1., 0., 0.]); let sink = rodio::SpatialSink::connect_new( &stream_handle.mixer(), positions.0, positions.1, positions.2, ); let file = std::fs::File::open("assets/music.ogg").unwrap(); let source = rodio::Decoder::new(BufReader::new(file)) .unwrap() .repeat_infinite() .take_duration(total_duration); sink.append(source); // A sound emitter playing the music starting at the centre gradually moves to the right // until it stops and begins traveling to the left, it will eventually pass through the // listener again and go to the far left. // This is repeated 5 times. for _ in 0..repeats { for _ in 0..num_steps { thread::sleep(refresh_duration); positions.0[0] += step_distance; sink.set_emitter_position(positions.0); } for _ in 0..(num_steps * 2) { thread::sleep(refresh_duration); positions.0[0] -= step_distance; sink.set_emitter_position(positions.0); } for _ in 0..num_steps { thread::sleep(refresh_duration); positions.0[0] += step_distance; sink.set_emitter_position(positions.0); } } sink.sleep_until_end(); }