// Daniel Shiffman

// http://natureofcode.com

​

let walkers = [];

​

function setup() {

  createCanvas(400, 400);

  walkers.push(new Walker());

  background(0);

}

​

function draw() {

  for (let i = walkers.length - 1; i >= 0; i--) {

    let walker = walkers[i];

    walker.step();

    walker.show();

​

    if (random(1) < 0.01) {

      console.log('split');

      let w = new Walker(walker.x, walker.y);

      walkers.push(w);

    }

  }

}

​

class Walker {

  constructor(x, y) {

    this.col = color(random(255), random(255), random(255));

    this.x = x || width / 2;

    this.y = y || height / 2;

  }

​

  show() {

    stroke(this.col);

    point(this.x, this.y);

  }

​

  step() {

    const choice = floor(random(4));

    if (choice == 0) {

      this.x++;

    } else if (choice == 1) {

      this.x--;

    } else if (choice == 2) {

      this.y++;

    } else {

      this.y--;

    }

  }

}

​