posSun = 0;

​

function setup() {

  createCanvas(600, 600);

  posSun = createVector(300, 300);

}

​

function draw() {

  background(0, 10);

  push();

  noStroke();

  circle(width / 2, height / 2, 50);

  pop();

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

    let b = balls[i];

    let force = p5.Vector.sub(posSun, b.p);

    let intensity = 0.0003;

    b.acc = force.mult(intensity);

    b.hp -= 0.2;

    b.update();

    if (b.hp < 0) {

      balls.splice(i, 1);

    }

  }

}

​

class Ball {

  constructor(x, y, na, nb) {

    this.p = createVector(x, y);

    this.vel = createVector(na, nb);

    this.acc = createVector(0, 0);

    this.hp = 255;

  }

  update() {

    this.vel.add(this.acc);

    this.p.add(this.vel);

    push();

    noStroke();

    fill(240, 237, 207, this.hp);

    circle(this.p.x, this.p.y, 20);

    pop();

  }

}

​

function mousePressed() {

  let angle = random();

  let va = sin(angle);

  let vb = sin(angle);

  let intensity = random(1.5, 4);

  balls.push(new Ball(mouseX, mouseY, va * intensity, vb * intensity));

}

​