randline

x = arc4random() % lx;
    y = arc4random() % ly;
    z = arc4random() % lz;
    ax = abs(arc4random() % 360);
    ay = abs(arc4random() % 360);
    az = abs(arc4random() % 360);

    while (blocks--) {
        ax += (double)((int)arc4random() % 200) / 10.0f;
        ay += (double)((int)arc4random() % 200) / 10.0f;

        if (ax < 0 || ax > 360)
            ax = abs(arc4random() % 360);
        if (ay < 0 || ay > 360)
            ay = abs(arc4random() % 360);

        x += cos(ax / (180/M_PI));
        y += sin(ay / (180/M_PI));

        if (x < 0) {
            ax = randf_in_range(0, 180);
        } else if (y < 0) {
            if (arc4random() & 1)
                ay = randf_in_range(270, 360);
            else
                ay = randf_in_range(0, 90);
        } else if (x > lx) {
            ax = randf_in_range(180, 360);
        } else if (y > ly) {
            ay = randf_in_range(90, 270);
        } else {
            this->put_block(type, x, y, z);
        }
    }