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

    private double Sign(double d)
    {
        if (d < 0) return -1.0;
        if (d > 0) return 1.0;
        return 0.0;
    }

    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);
        vector2 angnormal1 = (cos(dang-90), sin(dang-90)).Unit();
        vector2 angnormal2 = (cos(dang), sin(dang)).Unit();
        double ddiff1 = (angnormal1.x*fnormalp1.x+angnormal1.y*fnormalp1.y); // dot product
        double ddiff2 = (angnormal2.x*fnormalp1.x+angnormal2.y*fnormalp1.y); // dot product
        self.pitch = atan2(fnormalp2.x, fnormalp2.y)*ddiff2-90;
        self.roll = -atan2(fnormalp2.x, fnormalp2.y);
        self.roll *= ddiff1;
        self.angle = dang;
    }

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

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