My Sketch

var bunker = [];

var balls;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  bunker = new PixelBunker();

  balls = new Ball();

​

}

​

function draw() {

  background(255);

  loadPixels();

  bunker.display();

  updatePixels();

  balls.display();

}

​

function PixelBunker() {

  this.display = function() { 

    for (var y = 0; y < 100; y++) {

      for (var x = 0; x < 50; x++) {

        var index = (x + y * width) * 4;

        pixels[index + 2292200] = 18;

        pixels[index + 2292201] = 68;

        pixels[index + 2292202] = 14;

        pixels[index + 2292203] = 255;

      }

    }

  }

}

​

function Ball(){

  this.display = function(){

    noStroke();

    fill(255, 255, 255, 150);

    ellipse(mouseX, mouseY, 20, 20);

  }

}