constructor(x, y, m) {

    this.pos = createVector(x, y);

    this.mass = m;

    this.G = 1; // Gravitational constant

  }

​

  attract(mover) {

    let force = p5.Vector.sub(this.pos, mover.pos);

    let distanceSq = constrain(force.magSq(), 100, 5000); // Avoid too strong forces

    let strength = (this.G * this.mass * mover.mass) / distanceSq;

    force.setMag(strength);

    return force;

  }

​

  show() {

    noStroke();

    fill(255, 0, 0);

    ellipse(this.pos.x, this.pos.y, this.mass * 2);

  }

}

​