let w = 160;

let columns, rows, layers;

let boards = [];

let growing_state = -1;

let seed_x, seed_y;

​

function setup() {

  createCanvas(w, w);

  background(255);

  frameRate(20);

  columns = w / scale;

  rows = w / scale;

  layers = 8;

  for (let n = 0; n < layers; n++) {

    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 * scale, j * scale, scale);

      }

    }

    // console.log(board)

    boards.push(board);

  }

  // console.log(boards)

​

  for (let k = 0; k < layers; k++) {

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

      for (let j = 0; j < rows; j++) {

        boards[k][i][j].show();

      }

    }

  }

}

​

function draw() {

  background(255);

​

  // Looping but skipping the edge cells

  for (let z = 1; z < layers - 1; z++) {

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

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

        let neighbors = 0;

        for (let k = -1; k <= 1; k++) {

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

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

              //Use the previous state when counting neighbors

              neighbors += boards[z + k][x + i][y + j].previous;

            }

          }

        }

​

        neighbors -= boards[z][x][y].previous;

​

        // desicion

        if (growing_state == -1) {

          if (neighbors >= 13 && neighbors <= 22) {

            boards[z][x][y].state = 1;

          } else {

            boards[z][x][y].state = 0;

          }

        } else {

          if (neighbors >= 6 && neighbors <= 7) {

            boards[z][x][y].state = 1;

          } else if (boards[z][x][y].state == 1) {

            boards[z][x][y].state = 1;

          } else {

            boards[z][x][y].state = 0;

          }

        }

      }

    }

  }

​

  for (let k = 0; k < layers; k++) {

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

      for (let j = 0; j < rows; j++) {

        // evaluates to 255 when state is 0 and 0 when state is 1

        boards[k][i][j].show();

​

        // save the previous state before the next generation!

        boards[k][i][j].previous = boards[k][i][j].state;

      }

    }

  }

}

​

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 * scale, j * scale, scale);

    }

  }

  return arr;

}

​

function mousePressed() {

  growing_state *= -1;

  seed_x = mouseX;

  seed_y = mouseY;

  // console.log(growing_state);

}

​