class SlopedThing : Candelabra
{
    Default
    {
        +FLATSPRITE;
        //+ROLLCENTER;
    }

    private void SetToSlope(double dang)
    {
        vector3 fnormal = CurSector.floorplane.normal;
        if (!CurSector.floorplane.isSlope())
            fnormal = (0, 0, 1);
        vector2 fnormalp1 = (fnormal.x != 0 || fnormal.y != 0) ? (fnormal.x, fnormal.y).Unit() : (0, 0);
        vector2 fnormalp2 = ((fnormal.x, fnormal.y).Length(), fnormal.z);
        double fang = atan2(fnormalp1.y, fnormalp1.x); // floor angle (not pitch!)
        double fpitch = atan2(fnormalp2.x, fnormalp2.y); // floor pitch
        double ddiff1 = cos(fang-(dang-90));
        double ddiff2 = cos(fang-dang);
        self.pitch = fpitch*ddiff2-90;
        self.roll = -fpitch*ddiff1;
        self.angle = dang;
    }

    override void PostBeginPlay()
    {
        Super.PostBeginPlay();
    }

    override void Tick()
    {
        double dang = (level.time*3)%360;
        //dang = 45;
        SetToSlope(dang);
        Super.Tick();
    }
}