function rotateOrbitAngle(){

            currentAngle = MathX.normaliseAngle(currentAngle)
            targetAngle = MathX.normaliseAngle(targetAngle)

            if(Math.abs(MathX.angleDifference(currentAngle,targetAngle)) > minMoveDistance){

            var ix = currentAngle * stage.mouseX
            var iy = currentAngle * stage.mouseY
            var ox = targetAngle * player.x;
            var oy = targetAngle * player.y;

            if ( ix * oy > iy * oy ){
                this.rotateCW()
            }
            else{
            this.rotateCCW();
            }
            }
        }


        function rotateCW() {
        // rotate normally
        currentAngle += playerSpeed;
        currentAngle = MathX.normaliseAngle(currentAngle)
        }

        function rotateCCW() {
        // rotate in reverse
        currentAngle -= playerSpeed;
        currentAngle = MathX.normaliseAngle(currentAngle)
        }