let counter = 0;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

}

​

function draw() {

  // Using the counter trick that we did in class. I tried to time this background to ABBA's Dancing Queen. 

  if(counter%65 == 0) {

    light();

    light();

     }

  // Used 15 for the glitter so it'd more or less coincide with a 4/4 beat. The lights should be a little slower; I thought once per second, but that was a little too slow for the beat. Left it 65 for now.

  if(counter%15 == 0){

    glitter();

    glitter();

    glitter();

    glitter();

    glitter();

    background(0, 0.5);

    glitter();

    glitter();

    glitter();

    glitter();

    glitter();

  }

    counter++;

}

​

// Made a function for the glitter to more easily adjust the values while playing with it.

function glitter(w, h, d) {

  colorMode(HSB);

  noStroke();

  fill(50, 100, random(100));

  ellipse(random(width), random(height), random(5, 10));

}

​

// Likewise with the light beams.

function light(x1, y1, x2, y2, x3, y3, x4, y4) {

  colorMode(HSB);

  noStroke();

  fill(50, 50, random(90, 100), 0.3);

  let R1 = random(windowWidth);

  let R2 = random(windowWidth);

  quad(R1, 0, R1-(windowWidth/25), 0, R2, windowWidth, R2+(windowWidth/5), windowWidth);

}