use bevy::prelude::*;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins.set(WindowPlugin {
            primary_window: Some(Window {
                position: WindowPosition::At(IVec2::new(400, 200)),
                ..default()
            }),
            ..default()
        }))
        .add_startup_system(setup)
        .add_system(print_cursor_position)
        .run();
}

fn setup(mut commands: Commands) {
    commands.spawn(Window {
        title: "Second window".to_owned(),
        position: WindowPosition::At(IVec2::new(0, 0)),
        ..default()
    });
}

fn print_cursor_position(windows_q: Query<&Window>) {
    for window in windows_q.iter() {
        println!(
            "Window '{}' cursor position: {:?}",
            window.title,
            window.cursor_position()
        );
    }
}