Simple Counter Example - Bevy Typing CST Test

Simple Counter Example — Bevy Code

A minimal Bevy app that displays a counter on screen and updates it with keyboard input.

use bevy::prelude::*;

struct Counter(i32);

fn main() {
	App::build()
		.insert_resource(WindowDescriptor {
		title: "Bevy Counter".to_string(),
		width: 400.0,
		height: 300.0,
		..Default::default()
		})
		.insert_resource(Counter(0))
		.add_plugins(DefaultPlugins)
		.add_startup_system(setup.system())
		.add_system(update_counter.system())
		.run();
}

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
	commands.spawn_bundle(UiCameraBundle::default());
	commands.spawn_bundle(TextBundle {
		text: Text::with_section(
		"Count: 0",
		TextStyle {
		font: asset_server.load("fonts/FiraSans-Bold.ttf"),
		font_size: 40.0,
		color: Color::WHITE,
		},
		Default::default(),
		),
		..Default::default()
	}).insert(Counter(0));
}

fn update_counter(
	keyboard_input: Res<Input<KeyCode>>,
	mut query: Query<(&mut Text, &mut Counter)>
) {
	for (mut text, mut counter) in query.iter_mut() {
		if keyboard_input.just_pressed(KeyCode::Up) {
		counter.0 += 1;
		}
		if keyboard_input.just_pressed(KeyCode::Down) {
		counter.0 -= 1;
		}
		text.sections[0].value = format!("Count: {}", counter.0);
	}
}

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