mirror of
https://github.com/bevyengine/bevy
synced 2024-12-25 04:23:08 +00:00
694c06f3d0
# Objective Currently the `missing_docs` lint is allowed-by-default and enabled at crate level when their documentations is complete (see #3492). This PR proposes to inverse this logic by making `missing_docs` warn-by-default and mark crates with imcomplete docs allowed. ## Solution Makes `missing_docs` warn at workspace level and allowed at crate level when the docs is imcomplete.
77 lines
2.4 KiB
Rust
77 lines
2.4 KiB
Rust
//! Illustrates how `Timer`s can be used both as resources and components.
|
|
|
|
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) {
|
|
// Add an entity to the world with a timer
|
|
commands.spawn(PrintOnCompletionTimer(Timer::from_seconds(
|
|
5.0,
|
|
TimerMode::Once,
|
|
)));
|
|
}
|
|
|
|
/// This system ticks the `Timer` on the entity with the `PrintOnCompletionTimer`
|
|
/// component using bevy's `Time` resource to get the delta between each update.
|
|
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");
|
|
}
|
|
}
|
|
}
|
|
|
|
/// This system controls ticking the timer within the countdown resource and
|
|
/// handling its state.
|
|
fn countdown(time: Res<Time>, mut countdown: ResMut<Countdown>) {
|
|
countdown.main_timer.tick(time.delta());
|
|
|
|
// The API encourages this kind of timer state checking (if you're only checking for one value)
|
|
// Additionally, `finished()` would accomplish the same thing as `just_finished` due to the
|
|
// timer being repeating, however this makes more sense visually.
|
|
if countdown.percent_trigger.tick(time.delta()).just_finished() {
|
|
if !countdown.main_timer.finished() {
|
|
// Print the percent complete the main timer is.
|
|
info!(
|
|
"Timer is {:0.0}% complete!",
|
|
countdown.main_timer.fraction() * 100.0
|
|
);
|
|
} else {
|
|
// The timer has finished so we pause the percent output timer
|
|
countdown.percent_trigger.pause();
|
|
info!("Paused percent trigger timer");
|
|
}
|
|
}
|
|
}
|