y = 100;

let xspeed = 5;

let yspeed = 3;

​

let circles;

​

let R;

let G;

let B;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  x = x + xspeed;

  y = y + yspeed;

  if (x > 350) {

    xspeed = random(-5,-10);

    fill(R, G, B);

    circles = random (80,120)

  }

  if (x < 50) {

    xspeed = random(5,10);

    fill(R, G, B);

    circles = random (80,120)

  }

  if (y < 50) {

    yspeed = random(3,6);

    fill(R, G, B);

    circles = random (80,120)

  }

  if (y > 350) {

    yspeed = random(-3,-6);

    fill(R, G, B);

    circles = random (80,120)

  }

  R = random(255);

  G = random(255);

  B = random(255);

​

​

  //fill(R,G,B)

  circle(x, y, circles);

}

​