let b = -100;

​

let c = -250;

let d = 80;

let speed = 1;

​

let fadeDevice = 1;

​

function setup() {

  createCanvas(650, 850);

}

​

function preload() {

  mist = loadImage("assets/mist.png");

​

}

​

​

function draw() {

​

  background(20);

makeFog()

​

  }

​

function makeFog(){

    push();

  tint(255, 230*fadeDevice);

  mist.resize(0,950);

​

  image(mist, a, b);

  image (mist, c, d);

pop();

 c += speed*0.5;

    a += speed;

  if (a > 0 || a < -300){

    speed = speed*-1

​

}

​

    setTimeout(fogReappear, 15000);

}

​

​

function touchMoved() {

  fadeDevice -= 0.03;

  if (fadeDevice <= 0) {

    return false;

  }

}

​

​

function fogReappear() {

  if (fadeDevice < 1 && fadeDevice >= 0.5) {

    fadeDevice += 0.009;

  }

  if (fadeDevice < 0.5) {

    fadeDevice += 0.008;

  }

}