LifeGame with Processing

LifeGame

void setup() {
  size(480, 480);
  init();
  frameRate(12);
  unit = width / SIZE;
}

final int SIZE = 96;
int map[][] = new int[SIZE * SIZE][2];
int current;
int unit;
void init() {
  current = 0;
  for (int i = 0; i < SIZE * SIZE; i++) {
    map[i][current] = (int)random(2);
  }
}

void draw() {
  background(0);
  for (int i = 0; i < SIZE * SIZE; i++) {
    int x = i % SIZE;
    int y = i / SIZE;
    fill(map[i][current] * 255);
    rect(x * unit, y * unit, unit, unit);
  }
  
  next();
}

void next() {
  for (int i = 0; i < SIZE * SIZE; i++) {
    int x = i % SIZE;
    int y = i / SIZE;
    int total = 0;
    for (int x1 = -1; x1 < 2; x1++) {
      for (int y1 = -1; y1 < 2; y1++) {
        if (x1 == 0 && y1 == 0) {
          continue;
          
        }
        int tx = (x + x1 + SIZE) % SIZE;
        int ty = (y + y1 + SIZE) % SIZE;
        total += map[tx + ty * SIZE][current];
      }
    }
    
    map[i][1 - current] = 0;
    if (map[i][current] > 0) {
      if (total == 2 || total == 3) {
        map[i][1 - current] = 1;
      }
    }
    else {
      if (total == 3) {
        map[i][1 - current] = 1;
      }
    }
  }
  
  current = 1 - current;
}