iframe-proxy | Sunbelt Computer Software

38 lines (33 loc) · 1019 Bytes

use std::time::Instant;

use base::TICK_DURATION;

/// Utility to invoke a function in a tick loop, once

/// every 50ms.

pub struct TickLoop {

function: Box<dyn FnMut() -> bool>,

}

impl TickLoop {

/// Creates a `TickLoop`. The given `function` is called

/// each tick. Returning `true` from `function` causes the

/// tick loop to exit.

pub fn new(function: impl FnMut() -> bool + 'static) -> Self {

Self {

function: Box::new(function),

}

/// Runs the tick loop until the callback returns `true`.

pub fn run(mut self) {

loop {

let start = Instant::now();

let should_exit = (self.function)();

if should_exit {

return;

}

let elapsed = start.elapsed();

if elapsed > TICK_DURATION {

log::warn!("Tick took too long ({:?})", elapsed);

} else {

std::thread::sleep(TICK_DURATION - elapsed);

}

Sunbelt Computer Software