stockfish_for_mobile

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.