let soundTestOscillator;

let startNote = "A5";

let startAmp = 0;

let delayTime = 7;

​

const THX_CHORD = [

  "D2",

  "D3",

  "A3",

  "D4",

  "A4",

  "D5",

  "A5",

  "D6",

  "A6",

  "D7",

  "F#7",

];

​

const oscPort = new osc.WebSocketPort({

  url: "ws://localhost:8081",

});

​

oscPort.on("message", (msg) => {

  console.log("message", msg);

  if (msg.address == "/chord/thx/single") {

    // Select a random note for the THX chord

    // How many computers need to run this sketch to get all

    // the chord tones? 33 -> this is called the 

    // "coupon collector's problem".

    const noteToPlay = random(THX_CHORD);

    oscillators[0].start();

    oscillators[0].freq(noteToFreq(noteToPlay), delayTime);

    oscillators[0].amp(1, delayTime);

  } else if (msg.address == "/chord/thx/multiple") {

    // Each individual sketch will handle multiple voices

    for (let i = 0; i < msg.args[0]; i++) {

      const noteToPlay = random(THX_CHORD);

      oscillators[i].start();

      oscillators[i].freq(noteToFreq(noteToPlay), delayTime);

      oscillators[i].amp(1, delayTime);

    }

  } else if (msg.address == "/chord/msg/single") {

    // Get our notes from the message

    // Notice similarity to /chord/thx/single

    const noteToPlay = random(msg.args[0]);

    oscillators[0].start();

    oscillators[0].freq(noteToFreq(noteToPlay), delayTime);

    oscillators[0].amp(1, delayTime);

  } else if (msg.address == "/chord/msg/multiple") {

    // Notice similarity to /chord/thx/multiple

    for (let i = 0; i < msg.args[1]; i++) {

      const noteToPlay = random(msg.args[0]);

      oscillators[i].start();

      oscillators[i].freq(noteToFreq(noteToPlay), delayTime);

      oscillators[i].amp(1, delayTime);

    }

  } else if (msg.address == "/stop") {

    for (let i = 0; i < oscillators.length; i++) {

      oscillators[i].stop();

      // and reset

      oscillators[i].freq(noteToFreq(startNote));

      oscillators[i].amp(startAmp);

    }

  }

});

oscPort.on("close", () => {});

​

oscPort.open();

​

function setup() {

  createCanvas(400, 400);

  soundTestOscillator = new p5.Oscillator();

  // Make a new array given a number for length

  oscillators = new Array(THX_CHORD.length);

  // Then populate the array with new Oscillator instances

  for (let i = 0; i < oscillators.length; i++) {

    oscillators[i] = new p5.Oscillator("sawtooth");

  }

  // Set our starting note and starting volume

  for (let i = 0; i < oscillators.length; i++) {

    oscillators[i].freq(noteToFreq(startNote));

    oscillators[i].amp(startAmp);

  }

}

​

function draw() {

  background(220);

}

​

function mousePressed() {

  soundTestOscillator.start();

  soundTestOscillator.freq(noteToFreq('C4'));

  soundTestOscillator.amp(0.8, 0.1);

}

​

function mouseReleased() {

  soundTestOscillator.amp(0, 0.5);

}

​