@Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (!(obj instanceof MovableEntity))
      return false;
    MovableEntity other = (MovableEntity) obj;
    if (dead != other.dead)
      return false;
    if (multiplier != other.multiplier)
      return false;
    if (x != other.x)
      return false;
    if (y != other.y)
      return false;
    return true;
  }