ClockActor

class Stopwatch extends LayoutActor<typeof stopwatchSlots> {
  static slots = stopwatchSlots;
  clock = child(ClockActor);
}

ClockActor is how a scene gets elapsed time without reaching for Date.now(). Its elapsed value is a function of the frame, so it survives seeking and parallel rendering.

Surface

• Derived elapsed reads in frames, seconds and milliseconds.
• start(), pause(), resume() and reset().

this.clock.elapsedSeconds();
this.clock.elapsedFrames();

this.clock.start();
yield* this.runtime.wait(3);
this.clock.pause();

Use it for

• Elapsed time displayed inside a scene — stopwatches, countdowns, session timers.
• Any time-driven display that must be correct after a seek.