LIMBO (falling into a black hole)

// a quick & hellish sketch for fun. prevent the blob from falling into the black hole. 

// by la-krok

​

let kMax;

let step;

let n = 3; // number of blobs

let radius = 8; // diameter of the circle

let inter = 0.3; // difference between the sizes of two blobs

let maxNoise = 100;

let lapse = 100;    // timer

let noiseProg = (x) => (x);

let bubble;

​

function setup() {

  createCanvas(400, 400);

  bubble = 100;

 // colorMode(HSB, 1);

  angleMode(DEGREES);

  noFill();

  kMax = random(0.6, 1.0);

  step = 0.01;

  noStroke();

}

​

function draw() {

  let t = frameCount/100;

  for (let i = n; i > 0; i--) {

  let alpha = pow(1 - noiseProg(i / n), 2);

  let size = radius + i * inter;

  let k = kMax * sqrt(i/n);

  let noisiness = maxNoise * noiseProg(i / n);

​

  background(50, 4, 8);

  blendMode(BLEND);

  bubble = bubble + 1;

  fill(1,2,1);

  ellipse(200, 360, 150, 35);

    //BLOB1

    erase(); 

    fill(255, 0, 0, alpha*255);

    blob(size, width/2, bubble, k, t - i * step, noisiness);

    noErase();

    //BLOB2

    fill(0, 255, 0, alpha*255);

    blob(size, width/2, bubble, k, t - i * step + 1, noisiness);

    noErase(); 

    //BLOB3

    fill(0, 0, 255, alpha*255);

    blob(size, width/2, bubble, k, t - i * step + 2, noisiness);

    noErase();

  if (mouseIsPressed) {

  bubble = bubble - 2;

  }

    fill(50, 4, 8);

    rect(125, 377, 150, 30);

}

​

function blob(size, xCenter, yCenter, k, t, noisiness) {

  beginShape();

  let angleStep = 360 / 12;

  for (let theta = 0; theta <= 360 + 2 * angleStep; theta += angleStep) {

    let r1, r2;

    r1 = cos(theta)+1;

    r2 = sin(theta)+1;

    let r = size + noise(k * r1,  k * r2, t) * noisiness;

    let x = xCenter + r * cos(theta);

    let y = yCenter + r * sin(theta);

    curveVertex(x, y);

  }

  endShape();

  }

}

​