fn main() {
    App::new()
        .add_plugins((MinimalPlugins, TrackpadHapticPlugin))
        .add_systems(Update, important_system)
        .run();
}

// Everything important

fn important_system(mut feedback_event_writer: EventWriter<FeedbackEvent>) {
    // Something happens like damage to the player!
    feedback_event_writer.send(
        FeedbackEvent::new(
            // length in millis
            100,
            // minimum delay before additional feedback
            0
        )
    );
}