application_manager-3.js

  constructor(socket, remotePlayer, size, InputManager, Actuator, StorageManager) {

    this.size           = size; // Size of the grid
    this.inputManager   = new InputManager();
    this.storageManager = new StorageManager;
 
    // Change Actuator to take in remotePlayer as an argument!
    this.actuator       = new Actuator(remotePlayer);

    this.startTiles     = 2;
    ...
    this.inputManager.on("keepPlaying", this.keepPlaying.bind(this));

    // Add these two lines
    this.remotePlayer = remotePlayer;
    this.socket = socket;

    this.setup();
  }