Code in frame 1 layer 1

btnCalc.onRelease = function(){
  //calculate DX and DY from angle and length
  //use vector projection to get DX and DY

  //offset the angle
  degrees = angle -90;

  //convert to radians
  radians = degrees / 180 * Math.PI;

  //get DX and DY (normalized: length is one)
  dx = Math.cos(radians);
  dy = Math.sin(radians);

  //compensate for speed
  dx *= length;
  dy *= length;
} // end btnCalc