// https://thecodingtrain.com/tracks/the-nature-of-code-2/noc/2-forces/6-mutual-attraction

​

let movers = [];

let sun;

​

function setup() {

  createCanvas(640, 240);

  for (let i = 0; i < 100; i++) {

    let pos = p5.Vector.random2D();

    let vel = pos.copy();

    vel.setMag(random(10, 15));

    pos.setMag(random(100, 150));

    vel.rotate(PI / 2);

    let m = random(10, 15);

    movers[i] = new Mover(pos.x, pos.y, vel.x, vel.y, m);

  }

  sun = new Mover(0, 0, 0, 0, 500);

  background(255);

}

​

function draw() {

  background(255, 50);

  translate(width / 2, height / 2);

​

  for (let mover of movers) {

    sun.attract(mover);

    for (let other of movers) {

      if (mover !== other) {

        mover.attract(other);

        // stroke(255);

        //line(mover.pos.x, mover.pos.y, other.pos.x, other.pos.y);

      }

    }

  }

​

  for (let mover of movers) {

    mover.update();

    mover.show();

  }

  // sun.show();

}

​