multistockfish 0.1.0

Multiple flavors of Stockfish Engine

example/lib/main.dart

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:logging/logging.dart';
import 'package:multistockfish/multistockfish.dart';

import 'stockfish_output.dart';

void main() {
  Logger.root.level = Level.ALL;
  Logger.root.onRecord.listen((record) {
    debugPrint(
      '${record.level >= Level.WARNING ? record.level.name : ''} ${record.loggerName}: ${record.message}',
    );
  });

  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});
  @override
  State<StatefulWidget> createState() => _AppState();
}

class _AppState extends State<MyApp> {
  Directory? appSupportDirectory;
  StockfishFlavor flavor = StockfishFlavor.chess;
  late Stockfish stockfish;

  String? variant = '3check';

  static const _variants = [
    '3check',
    'crazyhouse',
    'atomic',
    'kingofthehill',
    'antichess',
    'horde',
    'racingkings',
  ];

  @override
  void initState() {
    super.initState();
    stockfish = Stockfish(flavor: flavor, variant: variant);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Stockfish example app')),
        body: Column(
          children: [
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: AnimatedBuilder(
                animation: stockfish.state,
                builder: (_, _) {
                  return DropdownButton<StockfishFlavor>(
                    onChanged:
                        stockfish.state.value == StockfishState.disposed
                            ? (value) {
                              setState(() {
                                flavor = value!;
                                stockfish = Stockfish(
                                  flavor: flavor,
                                  variant: variant,
                                );
                              });
                            }
                            : null,
                    value: flavor,
                    items: StockfishFlavor.values
                        .map(
                          (flavor) => DropdownMenuItem(
                            value: flavor,
                            child: Text(flavor.toString().split('.').last),
                          ),
                        )
                        .toList(growable: false),
                  );
                },
              ),
            ),
            if (flavor == StockfishFlavor.variant)
              AnimatedBuilder(
                animation: stockfish.state,
                builder: (_, _) {
                  return Padding(
                    padding: const EdgeInsets.all(8.0),
                    child: DropdownButton<String>(
                      onChanged:
                          stockfish.state.value == StockfishState.disposed
                              ? (value) {
                                setState(() {
                                  variant = value!;
                                  stockfish = Stockfish(
                                    flavor: flavor,
                                    variant: variant,
                                  );
                                });
                              }
                              : null,
                      value: variant,
                      items: _variants
                          .map(
                            (variant) => DropdownMenuItem(
                              value: variant,
                              child: Text(variant),
                            ),
                          )
                          .toList(growable: false),
                    ),
                  );
                },
              ),
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: AnimatedBuilder(
                animation: stockfish.state,
                builder:
                    (_, __) => Text(
                      'stockfish.state=${stockfish.state.value}',
                      key: const ValueKey('stockfish.state'),
                    ),
              ),
            ),
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: AnimatedBuilder(
                animation: stockfish.state,
                builder:
                    (_, __) => ElevatedButton(
                      onPressed:
                          stockfish.state.value == StockfishState.disposed
                              ? () {
                                final newInstance = Stockfish(
                                  flavor: flavor,
                                  variant: variant,
                                );
                                setState(() => stockfish = newInstance);
                              }
                              : null,
                      child: const Text('Reset Stockfish instance'),
                    ),
              ),
            ),
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: TextField(
                autocorrect: false,
                decoration: const InputDecoration(
                  labelText: 'Custom UCI command',
                  hintText: 'go infinite',
                ),
                onSubmitted: (value) => stockfish.stdin = value,
                textInputAction: TextInputAction.send,
              ),
            ),
            Wrap(
              children: [
                    'd',
                    'isready',
                    'bench',
                    'go movetime 3000',
                    'stop',
                    'quit',
                  ]
                  .map(
                    (command) => Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: ElevatedButton(
                        onPressed: () => stockfish.stdin = command,
                        child: Text(command),
                      ),
                    ),
                  )
                  .toList(growable: false),
            ),
            Expanded(child: OutputWidget(stockfish.stdout)),
          ],
        ),
      ),
    );
  }
}