Senation Lab

class=class="st">"cm">// tictactoe.dart
class _TTTState extends State<TTTPage> {
  final board = List.filled(9, class="st">'');
  String turn = class="st">'X';
  String? winner;

  void _tap(int i) {
    if (board[i].isNotEmpty) return;
    setState(() {
      board[i] = turn;
      winner = _checkWinner();
      turn = turn == class="st">'X' ? class="st">'O' : class="st">'X';
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Color(0xFFEBEAE8),
      body: Column(children: [
        Text(winner ?? class="st">'Turn: $turn'),
        GridView.count(
          shrinkWrap: true,
          crossAxisCount: 3,
          children: List.generate(9,
            (i) => GestureDetector(
              onTap: () => _tap(i),
              child: _Cell(value: board[i]),
            ),
          ),
        ),
      ]),
    );
  }
}