constructor(){

    this.pos = createVector(random(width), random(height));

  }

  show = function() {

    stroke(0)

    strokeWeight(4)

    point(this.pos.x, this.pos.y);  

  }

  update = function() {

    this.vel = createVector(random(-1, 1.2), random(-1, 1.2))

    this.pos.add(this.vel)

  }

}

​

function setup() {

  createCanvas(400, 400);

  walker = new Walker();

  background(120);

}

​

​

function draw() {

  walker.show();

  walker.update();

  if (mouseIsPressed) { setup() }

}