​

​

let beads = [];

let windOn = false;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  while(beads.length < 30){

    beads.push(new Bead({

      vx: 0,

    }));

  }

}

​

function draw() {

  background(220);

  let wind = createVector();

  if(windOn){

    arrow(width/2, height/2, mouseX, mouseY);

    wind = createVector(mouseX - width/2, mouseY - height/2);

  }

  for(let bead of beads){

    bead.show();

    let distance = createVector(bead.x - mouseX, bead.y - mouseY);

    let force = p5.Vector.fromAngle(distance.heading(), 100000 / pow(distance.mag(), 2));

    bead.applyForce(force);

    bead.update();

    comeBack(bead);

  }

}

​

function mousePressed(){

  windOn = true;

}

​

function mouseReleased(){

  windOn = false;

}