let columns, rows;

let initialColumns, initialRows; // Store initial values

let board;

​

function setup() {

  createCanvas(640, 240);

  noStroke(); // Remove cell borders

  initializeGrid();

}

​

function draw() {

  background(255);

  updateAutomata();

  displayAutomata();

}

​

function mousePressed() {

  // Change initial conditions when the mouse is clicked

  initializeGrid();

}

​

function mouseWheel(event) {

  // Adjust cell size based on scroll direction

  w += event.delta / 100;

  w = constrain(w, 1, 20); // Adjust the range of cell sizes

  initializeGrid();

}

​

function updateAutomata() {

  for (let x = 1; x < columns - 1; x++) {

    for (let y = 1; y < rows - 1; y++) {

      let neighbors = countNeighbors(x, y);

      updateCellState(x, y, neighbors);

    }

  }

}

​

function displayAutomata() {

  for (let i = 0; i < columns; i++) {

    for (let j = 0; j < rows; j++) {

      board[i][j].show();

      board[i][j].previous = board[i][j].state;

    }

  }

}

​

function initializeGrid() {

  initialColumns = floor(width / w);

  initialRows = floor(height / w);

​

  // Check for valid array dimensions

  if (initialColumns <= 2 || initialRows <= 2) {

    console.error("Invalid initial array dimensions. Please choose a larger canvas size or smaller cell size.");

    return;

  }

​

  // Reset to initial values

  columns = initialColumns;

  rows = initialRows;

​

  board = create2DArray(columns, rows);

  for (let i = 1; i < columns - 1; i++) {

    for (let j = 1; j < rows - 1; j++) {

      board[i][j] = new Cell(floor(random(2)), i * w, j * w, w);

    }

  }

}

​

function create2DArray(columns, rows) {

  let arr = new Array(columns);

  for (let i = 0; i < columns; i++) {

    arr[i] = new Array(rows);

    for (let j = 0; j < rows; j++) {

      arr[i][j] = new Cell(0, i * w, j * w, w);

    }

  }

  return arr;

}

​

function countNeighbors(x, y) {

  let neighbors = 0;

  for (let i = -1; i <= 1; i++) {

    for (let j = -1; j <= 1; j++) {

      neighbors += board[x + i][y + j].previous;

    }

  }

  neighbors -= board[x][y].previous;

  return neighbors;

}

​

function updateCellState(x, y, neighbors) {

  if (board[x][y].state == 1 && neighbors < 2) {

    board[x][y].state = 0;

  } else if (board[x][y].state == 1 && neighbors > 3) {

    board[x][y].state = 0;

  } else if (board[x][y].state == 0 && neighbors == 3) {

    board[x][y].state = 1;

  }

}

​