61 lines
No EOL
2.6 KiB
Markdown
61 lines
No EOL
2.6 KiB
Markdown
# flutter_stockfish_plugin
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A Flutter plugin for the Stockfish Chess engine.
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The current version is based on Stockfish 16.
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## Usage
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```dart
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final stockfish = new Stockfish()
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// Listen on stdout of Stockfish engine
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final stockfishSubscription = stockfish.stdout.listen((line) {
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print("received: $line");
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});
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// Sending UCI command to get Stockfish ready
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stockfish.stdin = 'isready'
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stockfish.stdin = 'position startpos moves e2e4' // set up start position
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stockfish.stdin = 'go depth 20' // search bestmove with a max septh of 20
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// Don't remember to dispose Stockfish when you're done.
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// Make shure to dispose Stockfish when closing the app. May use WindowListener.
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stockfishSubscription.cancel();
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stockfish.dispose();
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```
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A complete Example can be found at [stockfish_chess_engine](https://github.com/loloof64/StockfishChessEngineFlutter).
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## Web support
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Web support is currently experimental and currently requires manuly adding assets. It uses a version of stockfish compiled with [emscripten](https://emscripten.org/).
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In order to make multithreading available, the site must run in a secure environment.
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The following headers must be set for this:
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- `Cross-Origin-Embedder-Policy: require-corp`
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- `Cross-Origin-Opener-Policy: same-origin`
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Problems:
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- The current version includes the `.js`, `.wasm` and neuralnetwork data as assets.
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These files are bundled with every build on every platform, even if they are not needed.
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This approach wasts about 41MB, if not striped out by hand.
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## Goal of this fork of stockfish_chess_engine
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* Avoid limitation. This version does not redirect stdout and stdin of the app for communication with stockfish.
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* stdin and stdout were replaced with a fakestream element.
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* Stockfish internal logging might not work (could be fixed).
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## Credits
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* Based on and using source code from [stockfish_chess_engine](https://github.com/loloof64/StockfishChessEngineFlutter)
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* Using source code from [Stockfish](https://stockfishchess.org).
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* Using source code from [Flutter Stockfish](https://github.com/ArjanAswal/Stockfish).
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Directory src/Stockfish contains the latest current release.
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The code is modified to use a different communication interface.
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The original license for [Stockfish](https://stockfishchess.org) can be found in their [GitHub](https://github.com/official-stockfish/Stockfish) repository.
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Directory web/build and/or src/ may contains code compiled from [emscripten](https://emscripten.org/) or code that will be compiled with emscripten. Emscripten is licensed among others under the MIT License. [License Page](https://emscripten.org/docs/introducing_emscripten/emscripten_license.html) |