MelodyMaker

let velocity;

let intervalInSeconds;

let tonic;

let tonicName;

​

let variations = [];

let newVariation = true;

let melody = [];

let melodyIndex = 0;

let numberOfMelodies = 0;

​

let beat = -1;

let scaleIndex;

let note;

​

let developmentalTechniques = []

​

​

​

 function setup() 

{

  createCanvas(windowWidth, windowHeight);

  colorMode(HSB);

  background(0);

  textAlign(CENTER)

  intervalInSeconds = random(0.2, 0.5);

​

  soundLoop = new p5.SoundLoop(onSoundLoop, intervalInSeconds);

​

  synth = new p5.MonoSynth();

  synth.amp(1);

  synth.disconnect();

  reverb = new p5.Reverb();

  reverb.amp(1);

  reverb.process(synth, 1.5, 2);

  reverb.drywet(0.7);

  let chance = round(random(0,6));

  //chance = 0;

  scale = scaleCollection[chance];

  scaleName = scaleNameCollection[chance];

  tonic = round(random(0, 11));

  //tonic = 0;

  tonicName = basicScale[tonic];

  let octave = 0;

  for (let i = 0; i < 9; i++)

  {

    for (let u = 0; u < 7; u++)

    {

      finalScale.push(scale[u] + tonic + octave);

    }

    octave += 12;

  }

  for (let i = 0; i < 12; i++)

  {

    variations.push([]);

  }

  //generateBar(motive);

  //motive = [17, 'p', 'p', 'p']

  //developmentalTechniques= [generateBar(variations[0]), inversion(motive, variations[0]), changeThePitch(motive, variation1), conjunction(motive, variation1), truncation(motive, variation1), retrograde(motive, variation1), inversion(motive, variation1), sequence(motive, variation1)]

  createRefrain();

}

​

function onSoundLoop(timeFromNow) 

{

  if (beat == 7 && increase == true)

  {

    melodyIndex ++;

    melodyIndex %=2;

    increase = false;

  }

  else if (beat != 7)

  {

    increase = true;

  }

  beat ++;

  beat %= 8;

  scaleIndex = melody[melodyIndex][beat]

  if (scaleIndex == 'p')

  {

    note = 'pause';

    velocity = -1;

  }

  else

  {

    note = chromaticScale[scaleIndex]

    velocity = random(0.3, 0.5);

  }

  bgColor = scaleIndex - ((round((scaleIndex / 12) - 0.5))*12);

  background(bgColor*33, 45, 90);

  text(note, windowWidth/2, windowHeight/2);

  text(tonicName + ' ' + scaleName, 100, 50);

  synth.play(note, velocity, timeFromNow, 1/4);

  synth.play(note, velocity, timeFromNow, 1/4);

  //print('beat: ' + beat);

  //print('mI: ' + melodyIndex);

}

​

function draw()

{

  if (melodyIndex == 0 && newVariation == true)

  {

    //melody.splice(1, 1)

    //numberOfMelodies--;

    //variations[0] = [];

    //generateBar(variations[0]);

    newVariation = false;

  }

  else if (melodyIndex == 1)

  {

    newVariation = true;

  }

  soundLoop.start();

}