// Gravitational Attraction
// The Nature of Code
// The Coding Train / Daniel Shiffman
// https://youtu.be/EpgB3cNhKPM
// https://thecodingtrain.com/learning/nature-of-code/2.5-gravitational-attraction.html
// https://editor.p5js.org/codingtrain/sketches/MkLraatd

let movers = [];
let attractor;
var canvas;

function windowResized(){
    resizeCanvas(windowWidth, windowHeight);
}

function setup() {
  canvas = createCanvas(windowWidth, windowHeight);
  canvas.position(0, 0);
  canvas.style("z-index", "-1")

  movers[0] = new Mover(width/4, height, 5, -5, 55);
  movers[0].col = color('red');
  movers[1] = new Mover(3*width/4, height, -5, -5, 50);
  movers[1].col = color('white');
  movers[2] = new Mover(2*width/4, height, -5, -5, 45);
  movers[2].col = color('blue');
  background(0);
}

function draw() {
  background(0, 75);
  for (let mover of movers) {
    for (let other of movers) {
      if (mover !== other) {
        mover.attract(other);
      }
    }
  }
  for (let mover of movers) {
    mover.update();
    mover.edges();
    mover.show();
  }
}