import EventEmitter from "./eventEmitter"; export default class Time extends EventEmitter { constructor() { super(); this.start = Date.now(); this.current = this.start; this.elapsed = 0; this.delta = 16; window.requestAnimationFrame(() => { this.tick(); }); } tick() { const currentTime = Date.now(); this.delta = currentTime - this.current; this.current = currentTime; this.elapsed = this.current - this.start; this.trigger('tick'); window.requestAnimationFrame(() => { this.tick(); }); } }