72 lines
No EOL
2.9 KiB
Markdown
72 lines
No EOL
2.9 KiB
Markdown
# flutter_stockfish_plugin
|
|
|
|
A Flutter plugin for the Stockfish Chess engine.
|
|
|
|
The current version is based on Stockfish 16.
|
|
|
|
## Usage
|
|
|
|
```dart
|
|
final stockfish = new Stockfish()
|
|
|
|
// Listen on stdout of Stockfish engine
|
|
final stockfishSubscription = stockfish.stdout.listen((line) {
|
|
print("received: $line");
|
|
});
|
|
|
|
// Sending UCI command to get Stockfish ready
|
|
stockfish.stdin = 'isready'
|
|
|
|
stockfish.stdin = 'position startpos moves e2e4' // set up start position
|
|
stockfish.stdin = 'go depth 20' // search bestmove with a max septh of 20
|
|
|
|
// Don't remember to dispose Stockfish when you're done.
|
|
// Make shure to dispose Stockfish when closing the app. May use WindowListener.
|
|
stockfishSubscription.cancel();
|
|
stockfish.dispose();
|
|
```
|
|
|
|
A complete Example can be found at [stockfish_chess_engine](https://github.com/loloof64/StockfishChessEngineFlutter).
|
|
|
|
## Web support
|
|
Web support is currently experimental and requires manuly adding assets. It uses a version of stockfish compiled with [emscripten](https://emscripten.org/).
|
|
|
|
Usage:
|
|
- Install `emscripten` and set the the Environment-Variable `EMSDK`
|
|
- Build the CMakeLists.txt in `web/`
|
|
- Copy the following files to `web/stockfish/` in your project:
|
|
- flutter_stockfish_plugin.js
|
|
- flutter_stockfish_plugin.wasm
|
|
- flutter_stockfish_plugin.worker.js
|
|
- js_bindings.js
|
|
- stockfish_data.bin
|
|
|
|
If a different path should be used: Change the path const's in `js_bindungs.js` and `stockfish_web_bindings.dart`
|
|
|
|
In order to make multithreading available, the site must run in a secure environment.
|
|
The following headers must be set for this:
|
|
|
|
- `Cross-Origin-Embedder-Policy: require-corp`
|
|
- `Cross-Origin-Opener-Policy: same-origin`
|
|
|
|
Problems:
|
|
- The current version does not include the `.js`, `.wasm` and neuralnetwork data as assets.
|
|
This files will not be bundles automaticly on the web.
|
|
|
|
|
|
## Goal of this fork of stockfish_chess_engine
|
|
|
|
* Avoid limitation. This version does not redirect stdout and stdin of the app for communication with stockfish.
|
|
* stdin and stdout were replaced with a fakestream element.
|
|
* Stockfish internal logging might not work (could be fixed).
|
|
|
|
## Credits
|
|
* Based on and using source code from [stockfish_chess_engine](https://github.com/loloof64/StockfishChessEngineFlutter)
|
|
* Using source code from [Stockfish](https://stockfishchess.org).
|
|
* Using source code from [Flutter Stockfish](https://github.com/ArjanAswal/Stockfish).
|
|
|
|
Directory src/Stockfish contains the latest current release.
|
|
The code is modified to use a different communication interface.
|
|
The original license for [Stockfish](https://stockfishchess.org) can be found in their [GitHub](https://github.com/official-stockfish/Stockfish) repository.
|
|
|
|
Directory web/ may contains code compiled from [emscripten](https://emscripten.org/). Emscripten is licensed among others under the MIT License. [License Page](https://emscripten.org/docs/introducing_emscripten/emscripten_license.html) |