public function smoothRotateClockwise():void {
            setRotate( 1);
        }

        public function smoothRotateCounterclockwise():void {
            setRotate( -1);
        }

        private function setRotate(direction:Number):void {
            rotationDirection = forcedRotationDirection = direction;
            forcedRotate = true;
            Scenario.substate = Scenario.SUBSTATE_ROTPAUSE;
            for each (var mino:Mino in members)
                mino.visible = false;
        }

        override public function update():void {
            if (rotationDirection)
                rotateSmoothly();
            super.update();
        }

        public function rotateSmoothly():void {
            justRotated = false;

            var curRot:Number = rotation;
            rotationDirection = forcedRotate ? forcedRotationDirection : -forcedRotationDirection;
            var dR:Number = rotationDirection * FlxG.elapsed * 2 * Math.PI / rotationPeriod;
            rotation += dR;

            var section:Number = rotation * 2 / Math.PI;
            var curSection:Number = curRot * 2 / Math.PI;

            if (Math.floor(section) != Math.floor(curSection)) {
                var hit:Mino;
                if (rotationDirection == 1)
                    hit = rotateCounterclockwise()
                else
                    hit = rotateClockwise();

                if (hit) {
                    rotation = curRot; //bump! revert to last rotation
                } else {
                    //rotation = section * Math.PI / 2;
                    rotation = 0; //redundant with piecewise rotation otherwise
                    if (!forcedRotate) {
                        rotationDirection = NaN;  //lock in
                        justRotated = true;
                        Scenario.substate = Scenario.SUBSTATE_NORMAL;
                        for each (var mino:Mino in members)
                            mino.visible = true;
                    }
                }
            }

            forcedRotate = false; //require continuous presses to keep rotating!
        }