let planets = [];

let g = 0.4;

​

function setup() {

  createCanvas(600, 600);

  for (let i = 0; i < 5; i++) {

    planets.push(new Planet(random(0.8, 2)*4, random(width), random(height)));

  }

​

  blackhole = new Blackhole();

}

​

function draw() {

  background(255);

​

  for (let i = 0; i < planets.length; i++) {

    for (let j = 0; j < planets.length; j++) {

      if (i != j) {

        let force = planets[j].attract(planets[i]);

        planets[i].applyForce(force);

      }

    }

    let force = blackhole.attract(planets[i]);

    planets[i].applyForce(force);

    planets[i].update();

    planets[i].show();

  }

  blackhole.show();

}