let center;

​

function setup() {

  createCanvas(400, 400);

  center = createVector(width / 2, height / 2);

  randomizeMovers();

}

​

function randomizeMovers() {

  for (let i = 0; i < 10; i++) {

    let randomPosition = createVector(random(width), random(height));

    let randomMass = random(2, 8);

    movers[i] = new Mover(randomPosition, randomMass);

  }

}

​

function drawBackground(groundHeight) {

  background("SkyBlue");

  noStroke();

  fill("green");

  rect(0, height - groundHeight, width, height - groundHeight);

}

​

function draw() {

  drawBackground(1);

​

  let wind = createVector(0, 0);

​

  if (mouseIsPressed) {

    let mouse = createVector(mouseX, mouseY);

    wind = p5.Vector.sub(center, mouse).setMag(0.5);

    drawArrow(center, p5.Vector.mult(wind, 250), "DeepSkyBlue", 20);

  }

​

  for (let mover of movers) {

    let gravity = createVector(0, 0.2);

    let weight = p5.Vector.mult(gravity, mover.mass);

    mover.applyForce(weight);

    mover.applyForce(wind);

​

    mover.friction();

    mover.update();

    mover.edges();

    mover.display();

  }

}

​

function keyPressed() {

  randomizeMovers();

}

​