app/
app.rs

1use bevy::prelude::*;
2use bevy_compose::{compose, flex, handler_system, lazy, Compose, Composer};
3
4#[derive(Resource)]
5struct Count(i32);
6
7fn ui(count: Res<Count>) -> impl Compose {
8    (
9        format!("High five count: {}", count.0),
10        flex("Up high!").on_click(|mut count: ResMut<Count>| count.0 += 1),
11        flex("Down low!").on_click(|mut count: ResMut<Count>| count.0 -= 1),
12    )
13}
14
15fn main() {
16    let mut app = App::new();
17
18    app.world.insert_resource(Count(0));
19    app.world.spawn(Composer::new(ui));
20    app.world
21        .spawn((Camera2dBundle::default(), IsDefaultUiCamera));
22
23    app.add_plugins(DefaultPlugins)
24        .add_systems(Update, (compose, handler_system))
25        .run();
26}