let y;

let r;

let g;

let b;

​

function setup() {

  createCanvas(1920 / 2, 1080 / 2);

  background(255, 0, 0);

​

  x = width / 2;

  y = height / 2;

  r = random(255);

  g = random(255);

  b = random(255);

}

​

function draw() {

  const maxDistance = 5;

  let nextX = x + random(-maxDistance, maxDistance);

  let nextY = y + random(-maxDistance, maxDistance);

  nextX = constrain(nextX, 0, width);

  nextY = constrain(nextY, 0, height);

​

  const colorDistance = 10;

  r += random(-colorDistance, colorDistance);

  g += random(-colorDistance, colorDistance);

  b += random(-colorDistance, colorDistance);

  r = constrain(r, 0, 255);

  g = constrain(g, 0, 255);

  b = constrain(b, 0, 100);

​

  stroke(r, g, b);

  line(x, y, nextX, nextY);

  x = nextX;

  y = nextY;

}

​