teste

// Wolfram Elementary CA - Scrolling!

// The Coding Train / Daniel Shiffman

// https://thecodingtrain.com/challenges/179-wolfram-ca

// https://youtu.be/Ggxt06qSAe4

​

let cells = [];

let history = [1];

let ruleSet;

let w = 100;

let startRule = 90;

// a selection of rules

let ruleCollection = [235, 30, 110, 57, 62, 75, 122];

​

​

function setRules(ruleValue) {

  ruleSet = ruleValue.toString(2);

  while (ruleSet.length < 8) {

    ruleSet = "0" + ruleSet;

  }

}

​

function setup() {

  createCanvas(1950, 1080);

  setRules(startRule);

​

  let total = width / w;

  for (let i = 0; i < total; i++) {

    cells[i] = 0;

  }

  cells[floor(total / 2)] = 1;

}

​

function draw() {

  history.push(cells);

  if (random(1) < 0.1) {

    let nextRule = random(ruleCollection);

    setRules(nextRule);

    cells[floor(cells.length / 2)] = 1;

  }

​

  let cols = height / w;

  if (history.length > cols + 1) {

    history.splice(0, 1);

  }

​

  let y = 0;

  background(0, 255, 0);

  for (let cells of history) {

    for (let i = 0; i < cells.length; i++) {

      let x = i * w;

      if (cells[i] == 1) {

        noStroke(1);

        fill(1);

        square(x, y - w, w);

      }

    }

    y += w;

  }

​

  let nextCells = [];

  let len = cells.length;

  for (let i = 0; i < cells.length; i++) {

    let left = cells[(i - 1 + len) % len];

    let right = cells[(i + 1) % len];

    let state = cells[i];

    nextCells[i] = calculateState(left, state, right);

  }

  cells = nextCells;

}

​

function calculateState(a, b, c) {

  let neighborhood = "" + a + b + c;

  // console.log(neighborhood);

  let value = 7 - parseInt(neighborhood, 2);

  return parseInt(ruleSet[value]);

}

​