const PLAYER = {
  STARTING_POSITION_X: 400,
  STARTING_POSITION_Y: 404,

  MAX_SPEED: 400,

  HEAD: {
    STARTING_POSITION_X: 396,
    STARTING_POSITION_Y: 360
  }
};

const BAR = {
  BORDER_POSITION_X: 0,
  BORDER_POSITION_Y: 470,
};

const GLASS = {
  FACTOR_DIFFICULTY: 1 //TODO: Set with score or etc.    
};

const BULLET = {
  SPEED: 400,
  SPACING: 450
};

const EXPLOSION = {
  SPEED: 12
};
Add constants