​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  for (let i = 0; i < 100; i++) {

    let vect = createVector(random(400),random(400))

    if (!pos.includes(createVector(random(400),random(400)))) { 

      circle(vect.x, vect.y, 10);

      pos.push(vect);

    }

  }

  noLoop();

}