let a;

let m1 = 8;

let b;

let m2 = 10;

​

function setup() {

  a = createVector(random(0, width), random(0, height));

  b = createVector(random(0, width), random(0, height));

  createCanvas(400, 400);

}

​

function draw() {

  background(0);

  let force = p5.Vector.sub(b, a);

  let distance = force.mag();

  force.setMag(G * ((m1 * m2) / (distance * distance)));

  a.add(force);

  force = p5.Vector.sub(a, b);

  distance = force.mag();

  force.setMag(G * ((m1 * m2) / (distance * distance)));

  b.add(force);

  circle(a.x, a.y, 80);

  circle(b.x, b.y, 100);

  b.x = mouseX;

  b.y = mouseY;

}

​