CONWAYS FASTLED

#include "FastLED.h"



// Matrix size
#define NUM_ROWS 16
#define NUM_COLS 16

// LEDs pin
#define DATA_PIN 3

// LED brightness
#define BRIGHTNESS 180

#define NUM_LEDS NUM_ROWS * NUM_COLS

// Define the array of leds
CRGB leds[NUM_LEDS];

int board[NUM_COLS][NUM_ROWS];

void setup() {
  Serial.begin(115200);
  Serial.println("Welcome to the Serial Playground!");
  Serial.println("---------------------------------");


  for (int i = 0; i < NUM_COLS; i++) {
    for(int j = 0; j < NUM_ROWS; j++) {
      board[i][j] = rand()%2;
    }
  }

  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS);
}

int counter = 0;
void loop() {
  for (byte row = 0; row < NUM_ROWS; row++) {
    for (byte col = 0; col < NUM_COLS; col++) {
      int delta = abs(NUM_ROWS - row * 2) + abs(NUM_COLS - col * 2);
      leds[row * NUM_COLS + col] = CHSV(delta * 4 + counter, 255, 255);
      if (board[row][col] == 0) {
        leds[row * NUM_COLS + col] = CRGB(255,255,255);
      }
    }
  }
  FastLED.show();
  gameOfLife(board);
  delay(5000);
  counter++;
}

void printBoard(int board[NUM_COLS][NUM_ROWS]) {
  Serial.println("----------========== BOARD VIEW =============-----------");
  for (int i = 0; i < NUM_COLS; i++){
    char rowContent = "";
    for(int j = 0; j < NUM_COLS; j++) {
      Serial.print("[");
      Serial.print(i);
      Serial.print(",");
      Serial.print(j);
      Serial.print(": ");
      Serial.print(board[i][j]);
      Serial.print("] ");
    }
    Serial.println();
  }

}



void gameOfLife(int board[NUM_COLS][NUM_ROWS]) {
  int next[NUM_COLS][NUM_ROWS] = {0};
printBoard(next);
  int dirs[8][2] = {
    {NUM_COLS -1,NUM_ROWS -1},
    {NUM_COLS-1,0},
    {NUM_COLS-1,1},
    {0,NUM_ROWS -1},
    {0,1},
    {1,NUM_ROWS -1},
    {1,0},
    {1,1}
  };

  for (int i = 0; i < NUM_COLS; i++) {
    for (int j = 0; j < NUM_ROWS; j++) {
      int liveCount = 0;
      for (auto dir : dirs) {
        int x = (dir[0] + i) % i;
        int y = (dir[1] + j) % j;
        if (board[x][y] == 1) {
          liveCount++;
        }
      }

      if (board[i][j] == 0 && liveCount == 3) {
        next[i][j] = 1;
      } else if (board[i][j] == 1) {
        if (liveCount == 3 || liveCount == 2) {
          next[i][j] = 1;
        }
      }
    }
  }
  for(int i = 0; i < NUM_COLS; i++) {
    for(int j = 0; j < NUM_ROWS; j++) {
      board[i][j] = next[i][j];
    }
  }


}