let curImg = 0;

​

function preload() {

  for (let i=1; i < 4; i++) {

    let fn = 'asset/horse' + i + '.jpg';

    console.log(fn);

    let img = loadImage(fn);

    imgs.push(img);

  }

}

​

function setup() {

  createCanvas(400, 400);

  noCursor();

}

​

function draw() {

  background(220);

  curImg = floor((mouseX / 10) % 3);

  imageMode(CENTER);

  tint(255, 0, 0);

  image(imgs[curImg], mouseX, mouseY);

​

  /*

  curImg = curImg + 1;

  if (curImg == 3) {

    curImg = 0;

  }*/

}