code: function() {
              // set player position (player is not added to the enitity manager)
              this.entityManager.add(this.player.x, this.player.y, this.player);
              this.player.updateFov();
              this.lighting.update();
              this.renderer.setCenter(this.player.x, this.player.y);
              this.renderer.draw();
          }
docs: Starts the game.
  @method start