let m1;

let playing;

​

function setup() {

  createCanvas(600, 600);

  m1 = new Monsters(width / 2, height / 2, 20);

  playing = false;

  sound = new Audio("footsteps.mp3");

}

​

function draw() {

  background(0);

  m1.show();

}

​

function mousePressed() {

  if (m1.collision(mouseX, mouseY) && !playing) {

    playing = true;

    sound.play();

  } else if (m1.collision(mouseX, mouseY) && playing) {

    playing = false;

    sound.pause();

  }

}