@Override
    public double getAimAngle() {
        if (_where)
            _direction += 0.2;
        if (!_where)
            _direction -= 0.2;
        if (_direction >= 1.6)
            _where = false;
        if (_direction <= 0)
            _where = true;
        return (Math.PI * (0.8 - _direction) / 2);
    }