use bevy::{log::info, prelude::*};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.init_resource::<Countdown>()
.add_systems(Startup, setup)
.add_systems(Update, (countdown, print_when_completed))
.run();
}
#[derive(Component, Deref, DerefMut)]
struct PrintOnCompletionTimer(Timer);
#[derive(Resource)]
struct Countdown {
percent_trigger: Timer,
main_timer: Timer,
}
impl Countdown {
pub fn new() -> Self {
Self {
percent_trigger: Timer::from_seconds(4.0, TimerMode::Repeating),
main_timer: Timer::from_seconds(20.0, TimerMode::Once),
}
}
}
impl Default for Countdown {
fn default() -> Self {
Self::new()
}
}
fn setup(mut commands: Commands) {
commands.spawn(PrintOnCompletionTimer(Timer::from_seconds(
5.0,
TimerMode::Once,
)));
}
fn print_when_completed(time: Res<Time>, mut query: Query<&mut PrintOnCompletionTimer>) {
for mut timer in &mut query {
if timer.tick(time.delta()).just_finished() {
info!("Entity timer just finished");
}
}
}
fn countdown(time: Res<Time>, mut countdown: ResMut<Countdown>) {
countdown.main_timer.tick(time.delta());
if countdown.percent_trigger.tick(time.delta()).just_finished() {
if !countdown.main_timer.finished() {
info!(
"Timer is {:0.0}% complete!",
countdown.main_timer.fraction() * 100.0
);
} else {
countdown.percent_trigger.pause();
info!("Paused percent trigger timer");
}
}
}