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pub mod fps_logger;
use web_sys::*;
#[derive(Clone)]
pub struct Stopwatch {
start_time: f64,
paused_at: Option<f64>,
speed: f64,
}
impl Stopwatch {
pub fn new() -> Self {
Self::with_speed(1.0)
}
pub fn with_speed(speed: f64) -> Self {
let cur_time = Self::get_raw_time();
Self { start_time: cur_time, paused_at: None, speed }
}
pub fn paused(&self) -> bool {
self.paused_at.is_some()
}
pub fn pause(&mut self) {
self.paused_at = Some(self.get_end_time());
}
pub fn unpause(&mut self) {
if self.paused() {
self.start_time = Self::get_raw_time() - self.get_time();
self.paused_at = None;
}
}
pub fn toggle_pause(&mut self) {
if self.paused() {
self.unpause();
} else {
self.pause();
}
}
pub fn get_time(&self) -> f64 {
(self.get_end_time() - self.start_time) * self.speed
}
pub fn set_time(&mut self, cur_time: f64) {
self.start_time = self.get_end_time() - cur_time / self.speed;
if self.paused() {
self.paused_at = Some(self.start_time);
}
}
pub fn reset(&mut self) {
self.set_time(0.0);
}
pub fn add_time(&mut self, time_diff: f64) {
self.start_time -= time_diff / self.speed;
match self.paused_at {
None => (),
Some(paused_at) => self.paused_at = Some(paused_at + time_diff),
}
}
fn get_end_time(&self) -> f64 {
match self.paused_at {
None => Self::get_raw_time(),
Some(paused_at) => paused_at,
}
}
fn get_raw_time() -> f64 {
window().unwrap().performance().unwrap().now() / 1000.0
}
}