public Coords driftAddSmoke(Coords coords,int windDir,int windStr){
  return driftAddSmoke(coords,windDir,windStr,0);
}

public Coords driftAddSmoke ( Coords coords , int windDir , int windStr ) { return driftAddSmoke ( coords , windDir , windStr , 0 ) ; }
override for the main driftaddsmoke to allow for 0 direction changes
