​

function setup() {

  createCanvas(560,390);

  background(220);

  w = new Walker(); 

}

​

function draw() { 

  w.step();

  w.render();

}

​

class Walker {

  constructor() {

    this.x = width/2; 

    this.y = height/2; 

  }

​

  render() {

    stroke(63,63,147);

    point(this.x,this.y);

  }

​

  step() {

    //Arbitrary random value between -1.0 and 1.0

    let stepx = random(-1, 1); //yields any floating point number between -1.0 and 1.0

    let stepy = random(-1, 1); //yields any floating point number between -1.0 and 1.0

    this.x += stepx;

    this.y += stepy;

    this.x = constrain(this.x,0,width-1);

    this.y = constrain(this.y,0,height-1);

  }

}