​

class Walker {

    constructor() {

        this.x = width/2;

        this.y = height/2;

    }

​

    display() {

        stroke(0);

        point(this.x, this.y);

    }

​

    step() {

        let stepx = float(random(-1, 1));

        let stepy = float(random(-1, 1));

        this.x = stepx;

        this.y = stepy;

    }

}

​

function setup() {

  createCanvas(400, 400);

    w = new Walker();

  background(220);

}

​

function draw() {

    w.step();

    w.display();

}