Cocktail Sort - OpenProcessing

mySketch
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var values = [];
var curpos = 0;
var count = 69; //change this to adjust the number of bars
var first = 0;
var last = count-1;
var lf = first;
var ll = last;
var dir = 1;
var done = false;
var fin = false;
var swapped = false;
var sind = 0;
var osc;
​
function setup() {
  createCanvas(windowWidth, windowHeight);
  background(0);
  //frameRate(15);
  for (var i = 0; i < count; i++) {
    values[i] = i+1;
  }
  for (var i = 0; i < count; i++) {
    var nwps = floor(random(0, count-1));
    var inter = values[nwps];
    values[nwps] = values[i];
    values[i] = inter;
  }
  osc = new p5.Oscillator('sine');
  osc.start();
  osc.amp(0.25)
}
​
function draw() {
  if (done == false) {
  clear();
  noStroke();
  //fill(127);
  for (var j = 0; j < values.length; j++) {
    fill(((values[j]-1)/(count-1))*224+29, ((count-values[j])/(count-1))*131+105, ((count-values[j])/(count-1))*65+179);
    rect(1+((width-count-1)/count+1)*j, height, (width-count-1)/count, -values[j]*((height-(height/(count+1)))/(count+1)));
  }
  fill(255, 0, 0);
  if (fin == true) fill(0, 255, 0);
  rect(1+((width-count-1)/count+1)*curpos, height, (width-count-1)/count, -values[curpos]*((height-(height/(count+1)))/(count+1)));
  if (dir == 1) {
    if (values[curpos] > values[curpos+1]) {
      inter = values[curpos+1];
      values[curpos+1] = values[curpos];
      values[curpos] = inter;
      swapped = true;
      sind = curpos;
    }
  } else {
    if (values[curpos] < values[curpos-1]) {
      inter = values[curpos-1];
      values[curpos-1] = values[curpos];
      values[curpos] = inter;
      swapped = true;
      sind = curpos;
    }
  }
  osc.freq(((values[curpos]-1)*(330/(count-1))+110)*2);
  curpos = curpos + dir;
  if ((curpos == lf || curpos == ll) && swapped == false && fin == false) {
    curpos = 0;
    dir = 1;
    fin = true;
  }
  if (curpos == last) {
    if (swapped) {
      curpos--;
      dir = -1;
      if (last <= first - 1) {
        done = true;
      }
      ll = last;
      last = sind;
      swapped = false;
    }
  }
  if (curpos == first) {
    if (swapped) {
      curpos++;
      dir = 1;
      if (last <= first - 1) {
        done = true;
      }
      lf = first;
      first = sind;
      swapped = false;
    }
  }
  }
  if (curpos > values.length) {
    osc.stop(0.2);
  }
}