// Solution by Rick Sidwell

// http://natureofcode.com

​

let walker;

​

function setup() {

  createCanvas(640, 240); // creating canvas of size 640 x 240

  walker = new Walker(); // creating an instance/object of class Walker

  background(255);

}

​

function draw() {

  walker.step();

  walker.show();

}

​

class Walker {

  constructor() {

    this.x = width / 2;

    this.y = height / 2;

    this.oldx = this.x;

    this.oldy = this.y;

    this.tx = 0;

    this.ty = 10000;

  }

​

  step() {

    this.x += map(noise(this.tx), 0, 1, -1, 1);

    this.y += map(noise(this.ty), 0, 1, -1, 1);

​

    this.tx += 0.01;

    this.ty += 0.01;

  }

​

  show() {

    stroke(0);

    line(this.oldx, this.oldy, this.x, this.y);

    this.oldx = this.x;

    this.oldy = this.y;

  }

}

​