//Play Big Bang by Chewiecatt

​

let ifClicked = 0, j = 0;

let maxDiameter = 1000;

let colors;

let colorIndex = 0;

let angle = 0;

let angleIncrement = 0.05;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  colors = [

    color(0, 36, 93),

    color(0, 101, 164),

    color(255, 210, 0),

    color(255, 255, 255)

  ];

  frameRate(30)

}

​

function draw() {

  background(0);

  if (ifClicked == 0) {

    if (j < maxDiameter) {

      j += 10;

      if (j % (maxDiameter / colors.length) == 0) {

        colorIndex = (colorIndex + 1) % colors.length;

      }

    } else {

      ifClicked = 1;

    }

  } else {

    if (j > 0) {

      j -= 10;

      if (j % (maxDiameter / colors.length) == 0) {

        colorIndex = (colorIndex + 1) % colors.length;

      }

    } else {

      ifClicked = 0;

    }

  }

​

  noStroke();

  for (let i = j; i > 0; i -= 2) {

    let interColor = lerpColor(colors[colorIndex], colors[(colorIndex + 1) % colors.length], (i / j));

    fill(interColor);

    ellipse(width / 2, height / 2, i);

  }

  angle += angleIncrement;

}

​

function mouseClicked() {

  ifClicked = 1 - ifClicked;

}

​

function keyPressed() {

  if (keyCode === UP_ARROW) {

    maxDiameter += 10;

  } else if (keyCode === DOWN_ARROW) {

    maxDiameter -= 10;

  }

}

​