Description:

stockfish for mobile

stockfish #
The Stockfish Chess Engine for Flutter.
Usages #
iOS project must have IPHONEOS_DEPLOYMENT_TARGET >=11.0.
Example #
@PScottZero was kind enough to create a working chess game using this package.
Add dependency #
Update dependencies section inside pubspec.yaml:
stockfish: ^1.0.0
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Init engine #
import 'package:stockfish/stockfish.dart';

# create a new instance
final stockfish = Stockfish();

# state is a ValueListenable<StockfishState>
print(stockfish.state.value); # StockfishState.starting

# the engine takes a few moment to start
await Future.delayed(...)
print(stockfish.state.value); # StockfishState.ready
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UCI command #
Waits until the state is ready before sending commands.
stockfish.stdin = 'isready';
stockfish.stdin = 'go movetime 3000';
stockfish.stdin = 'go infinite';
stockfish.stdin = 'stop';
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Engine output is directed to a Stream<String>, add a listener to process results.
stockfish.stdout.listen((line) {
# do something useful
print(line);
});
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Dispose / Hot reload #
There are two active isolates when Stockfish engine is running. That interferes with Flutter's hot reload feature so you need to dispose it before attempting to reload.
# sends the UCI quit command
stockfish.stdin = 'quit';

# or even easier...
stockfish.dispose();
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Note: only one instance can be created at a time. The factory method Stockfish() will return null if it was called when an existing instance is active.

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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