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use crate::time::Time;
use bevy_ecs::prelude::*;
use bevy_property::Properties;
use std::time::Duration;
#[derive(Clone, Debug, Default, Properties)]
pub struct Timer {
pub elapsed: f32,
pub duration: f32,
pub finished: bool,
pub just_finished: bool,
pub repeating: bool,
}
impl Timer {
pub fn new(duration: Duration, repeating: bool) -> Self {
Timer {
duration: duration.as_secs_f32(),
repeating,
..Default::default()
}
}
pub fn from_seconds(seconds: f32, repeating: bool) -> Self {
Timer {
duration: seconds,
repeating,
..Default::default()
}
}
pub fn tick(&mut self, delta: f32) {
let prev_finished = self.elapsed >= self.duration;
if !prev_finished {
self.elapsed += delta;
}
self.finished = self.elapsed >= self.duration;
self.just_finished = !prev_finished && self.finished;
if self.repeating && self.finished {
self.elapsed %= self.duration;
}
}
pub fn reset(&mut self) {
self.finished = false;
self.just_finished = false;
self.elapsed = 0.0;
}
}
pub(crate) fn timer_system(time: Res<Time>, mut query: Query<&mut Timer>) {
for mut timer in &mut query.iter() {
timer.tick(time.delta_seconds);
}
}