// Different sounds

// Jared Donovan 2021

//

// Press the '1', '2', and '3' keys to play/pause three different 

// samples. Pressing the same number again will pause the sample

//

// Declare an array to store P5.SoundFile objects

let sounds = [];

​

// This variable will record which sound file was last playing.

let soundIdx = 0;

​

function preload(){

  // Load the sounds from file

  sounds[0] = loadSound('data/one.mp3');

  sounds[1] = loadSound('data/two.mp3');

  sounds[2] = loadSound('data/three.mp3');

}

​

function setup(){

  createCanvas(150, 150);

}

​

function draw(){

  background(255);

​

  // Display some basic info about which sound,

  // and whether it is playing or not.

  text("soundIdx: " + soundIdx, 20, 20);

  text("isPlaying(): " + sounds[soundIdx].isPlaying(), 20, 40);

}

​

// When the user presses the key, we check whether it is 

// key '1', '2', or '3'. We then use this to decide which

// sound to play. We also need to check whether the user

// is pressing the same key as the sound that is currently 

// playing. In this case, we pause/play the sound.

function keyPressed(){

  // Make a copy of the old sound index.

  let oldSoundIdx = soundIdx;

​

  // If key 1, 2, 3 is pressed, set the sound index accordingly

  if (key == '1'){

    soundIdx = 0;

  } else if (key == '2'){

    soundIdx = 1;

  } else if (key == '3'){

    soundIdx = 2;

  }

​

  // Check whether the new sound is different to the old one

  // If so, pause the old sound before playing the new one.

  if (soundIdx != oldSoundIdx){

    sounds[oldSoundIdx].pause();

  }

​

  // If the sound is currently playing, pause and vice-a-versa

  if (sounds[soundIdx].isPlaying()){

    sounds[soundIdx].pause();

  } else {

    sounds[soundIdx].loop();

  }

}