// https://youtu.be/TOEi6T2mtHo

​

let walls = []

let particle

​

function setup() {

  createCanvas(windowWidth, windowHeight)

  walls.push(new Boundary(0    , 0     , width, 0))

  walls.push(new Boundary(width, 0     , width, height))

  walls.push(new Boundary(width, height, 0    , height))

  walls.push(new Boundary(0    , height, 0    , 0))

  for (let i = 0; i < 5; i++) {

    let x1 = random(width)

    let y1 = random(height)

    let x2 = random(width)

    let y2 = random(height)

    wall = new Boundary(x1, y1, x2, y2)

    walls.push(wall)

  }

  particle = new Particle(100, 200)

}

​

function draw() {

  background(0)

  particle.update(mouseX, mouseY)

  particle.show()

  particle.look(walls)

  for (let wall of walls) {

    wall.show()

  }

}