ujs/src/js/app.js

import { Scene } from './scene.js';
import { Settings } from './settings.js';
import { Pointer } from './pointer.js';

export class App {
  constructor(w, h) {
    this.canvas = document.querySelector('canvas');
    this.context = this.canvas.getContext('2d');

    this.scene = new Scene(this.canvas, this.context, w, h);
    this.prevTime = Date.now();

    Pointer.init();

    this.run();
  }

  run = () => {
    let newTime = Date.now();
    Settings.delta = (newTime - this.prevTime) / 1000;
    this.prevTime = newTime;

    this.scene.run();

    requestAnimationFrame(this.run);
  };
}