index.js

import GameConfig from "./config/GameConfiguration.js";
import Logger from "./utils/Logger.js";
import StarGazer from "./game/StarGazer.js";
import FakeGazeDataProvider from "./gaze/FakeGazeDataProvider.js";
import GazeDataProvider from "./gaze/GazeDataProvider.js";

var canvas = document.querySelector("canvas"),
  starScreen = document.querySelector("#startScreen");

function init() {
  loadOptions();
  if (GameConfig.getShowVerboseDebugInfoInConsole() === true) {
    Logger.enable();
  }
  document.querySelector("#versionInfo").innerHTML =
    `build ${GameConfig.getVersion()}`;
    document.querySelector("#startButton").addEventListener("click", prepareGame);
}

function loadOptions() {
  let useMouse = document.querySelector("#useMouseInput").checked,
    showDebug = document.querySelector("#showDebugInfo").checked,
    logToConsole = document.querySelector("#logToConsole").checked,
    gameServerUrl = document.querySelector("#gameServerUrl").value;
  GameConfig.setUseMouseInput(useMouse);
  GameConfig.setShowDebugInfoOnScreen(showDebug);
  GameConfig.setShowVerboseDebugInfoInConsole(logToConsole);
  GameConfig.setGameServerURL(gameServerUrl);
}

function prepareGame() {
  loadOptions();
  StarGazer.init({
    canvas: canvas,
    gazeDataProvider: getDataProvider(),
  });
  canvas.requestFullscreen().then(startGame);
}

function startGame() {
  starScreen.classList.add("hidden");
  canvas.classList.remove("hidden");
}

function getDataProvider() {
  let provider;
  if (GameConfig.getUseMouseInput() === true) {
    provider = new FakeGazeDataProvider();
  } else {
    provider = new GazeDataProvider();
  }
  provider.start(GameConfig.getGazeServerURL());
  return provider;
}

init();