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View Code? Open in Web Editor NEWThe strong open source chess engine Stockfish compiled to JavaScript and WebAssembly using Emscripten
License: GNU General Public License v3.0
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ornicar isaacl vjuneja lulzx questsin zhoun945 dqchess luiz158 gultekinmg julianvolodia aneternalgoldenbraid pot-hot jmherbst scchess jhms classicvalues danielfoord ajunlonglive cricklet kato129 megaplaystrategystockfish.js's Issues
[Feature request] NPM package
Hello,
Is it possible to get a compiled version with a npm package ?
Thank you.
em++:Permission denied while running with docker
cannot run with docker. Getting this permission error inside docker container.
vjuneja$ docker run --volume $PWD:/home/builder/stockfish.js --user $(id -u) niklasf/emscripten-for-stockfish
Makefile:613: recipe for target '.depend' failed
make: [.depend] Error 127 (ignored)
Config:
debug: 'no'
sanitize: 'no'
optimize: 'yes'
arch: 'any'
bits: '32'
kernel: 'Linux'
os: 'GNU/Linux'
prefetch: 'no'
popcnt: 'no'
sse: 'no'
pext: 'no'
Flags:
CXX: em++
CXXFLAGS: -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DUSELONGESTPV -DNDEBUG -O3 -DNO_PREFETCH
LDFLAGS: -s TOTAL_MEMORY=33554432 --memory-init-file 0 -s NO_EXIT_RUNTIME=1 -s EXPORTED_FUNCTIONS=[_main, _uci_command] --pre-js pre.js --post-js post.js -O3
Testing config sanity. If this fails, try 'make help' ...
make ARCH=js COMP=emscripten all
make[1]: Entering directory '/home/builder/stockfish.js/src'
Makefile:613: recipe for target '.depend' failed
make[1]: [.depend] Error 127 (ignored)
em++ -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DUSELONGESTPV -DNDEBUG -O3 -DNO_PREFETCH -c -o bitbase.o bitbase.cpp
make[1]: execvp: em++: Permission denied
<builtin>: recipe for target 'bitbase.o' failed
make[1]: *** [bitbase.o] Error 127
make[1]: Leaving directory '/home/builder/stockfish.js/src'
Makefile:491: recipe for target 'build' failed
make: *** [build] Error 2
vjuneja$
Tried running assudo as well.
Error with WebAssembly engine
When I try to use the web assembly version I get an error in the browser
This is how I serve the wasm files with NestJs
@Get('webworker-wasm.js')
private getWebworkerWasmSfjs(req: Request, res: Response) {
Logger.Info('Serving file ../../node_modules/stockfish.js/stockfish.wasm.js');
fs.readFile('../../node_modules/stockfish.js/stockfish.wasm.js', 'utf8', (err: any, data: string) => {
// Buffer.concat(data)
if (err) {
console.log(err);
}
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Request-Method', '*');
res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET');
res.setHeader('Access-Control-Allow-Headers', '*');
// res.setHeader('Content-Type', 'application/wasm');
res.setHeader('Content-Type', 'application/javascript');
// res.writeHead(200, {'Content-Type': 'application/wasm'});
res.status(200).end(data);
});
}
@Get('stockfish.wasm')
private getWebworkerWasmSf(req: Request, res: Response) {
Logger.Info('Serving file ../../node_modules/stockfish.js/stockfish.wasm');
fs.readFile('../../node_modules/stockfish.js/stockfish.wasm', 'binary', (err: any, data: Buffer) => {
// Buffer.concat(data)
if (err) {
console.log(err);
}
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Request-Method', '*');
res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET');
res.setHeader('Access-Control-Allow-Headers', '*');
res.setHeader('Content-Type', 'application/wasm');
// res.writeHead(200, {'Content-Type': 'application/wasm'});
res.status(200).end(data);
});
}
In my browser I execute it as follows
engine = new Worker(`http://localhost:${this.port}/files/webworker-wasm.js`);
engine.postMessage('uci');
engine.postMessage('setoption name Move Overhead value 200');
engine.postMessage('position fen rnbqkbnr/pppppppp/8/8/8/P7/1PPPPPPP/RNBQKBNR b KQkq - 0 1');
engine.postMessage('go wtime 59000 btime 60000');
Maybe I'm serving the files wrong or am I using wrong options. Any suggestions?
Firefox : the local engine doesn't start with n best lines if n-1 possible moves #274
Here, there's only 3 possibles moves: https://fr.lichess.org/analysis/standard/3k4/p2n4/Pp2Q3/4P3/5qPb/1N6/1P5K/6B1_w_-_-_5_44
the local engine doesn't start with 4 best lineshttps://fr.lichess.org/IQbOWke5#88
with 1 best line, it's OK
with 2 or 3 best lines, the engine doesn't start
safari js error with unoptimized build
| optimize=no | optimize=yes | |
|---|---|---|
| Chrome 57 | ✔ | ✔ |
| Firefox 49 | ✔ | ✔ |
| Safari 9.1.3 | :-( | ✔ |
The js error:
TypeError: Module['___cxa_is_pointer_type'] is not a function.
(In 'Module['___cxa_is_pointer_type'](throwntype)', 'Module['___cxa_is_pointer_type']' is undefined)
Built with OS X 10.11.6, LLVM 8.0.0, emscripten 1.37.1. I was trying to debug the wonky elapsed clock in safari, but it's difficult to trace through without optimize=no.
Error on build with latest version of emscripten
Following instructions from the readme and emscripten, I get this error
stockfish.js git/ddugovic
❯ ./build.sh
Config:
debug: 'no'
sanitize: 'no'
optimize: 'yes'
arch: 'any'
bits: '32'
kernel: 'Darwin'
os: ''
prefetch: 'no'
popcnt: 'no'
sse: 'no'
pext: 'no'
Flags:
CXX: em++
CXXFLAGS: -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto
LDFLAGS: -s TOTAL_MEMORY=33554432 --memory-init-file 0 -s NO_EXIT_RUNTIME=1 -s EXPORTED_FUNCTIONS=[_main, _uci_command] -s EXTRA_EXPORTED_RUNTIME_METHODS=[ccall] --pre-js pre.js -s WASM=0 -s LEGACY_VM_SUPPORT=1 -O3 -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto
Testing config sanity. If this fails, try 'make help' ...
/Library/Developer/CommandLineTools/usr/bin/make ARCH=js COMP=emscripten all
em++ -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto -c -o bitbase.o bitbase.cpp
em++ -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto -c -o bitboard.o bitboard.cpp
clang-13: error: unsupported option '-mdynamic-no-pic' for target 'wasm32-unknown-emscripten'
clang-13: error: unsupported option '-mdynamic-no-pic' for target 'wasm32-unknown-emscripten'
em++: error: '/Users/robertwebb/emsdk/upstream/bin/clang++ -DEMSCRIPTEN -fignore-exceptions -flto=full -Xclang -iwithsysroot/include/SDL -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=2 -D__EMSCRIPTEN_minor__=0 -D__EMSCRIPTEN_tiny__=14 -D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__ -flegacy-pass-manager -Werror=implicit-function-declaration --sysroot=/Users/robertwebb/emsdk/upstream/emscripten/cache/sysroot -Xclang -iwithsysroot/include/compat -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto -c bitboard.cpp -o bitboard.o' failed (1)
make[1]: *** [bitboard.o] Error 1
make[1]: *** Waiting for unfinished jobs....
clang-13: error: unsupported option '-mdynamic-no-pic' for target 'wasm32-unknown-emscripten'
clang-13: error: unsupported option '-mdynamic-no-pic' for target 'wasm32-unknown-emscripten'
em++: error: '/Users/robertwebb/emsdk/upstream/bin/clang++ -DEMSCRIPTEN -fignore-exceptions -flto=full -Xclang -iwithsysroot/include/SDL -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=2 -D__EMSCRIPTEN_minor__=0 -D__EMSCRIPTEN_tiny__=14 -D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__ -flegacy-pass-manager -Werror=implicit-function-declaration --sysroot=/Users/robertwebb/emsdk/upstream/emscripten/cache/sysroot -Xclang -iwithsysroot/include/compat -Wall -Wcast-qual -std=c++11 -DANTI -DATOMIC -DCRAZYHOUSE -DHORDE -DKOTH -DRACE -DTHREECHECK -DNDEBUG -O3 -mdynamic-no-pic -DNO_PREFETCH -flto -c bitbase.cpp -o bitbase.o' failed (1)
make[1]: *** [bitbase.o] Error 1
make: *** [build] Error 2
This is probably due to latest emscripten being incompatible with this build, going to try to find either a different stockfish js or the correct version of emscripten to use.
Not recognizing "eval" token
The engine doesn't seem to be responding to eval UCI command, is there a specific UCI sequence needed for debug output?
Web Assembly Engine Can't Find .wasm File
So i'm having an issue in my code where the stockfish.wasm.js file can't find the stockfish.wasm file.
myFunctions.loadChessEngine = function() {
if(!lozzaObjectURL) {
lozzaObjectURL = URL.createObjectURL(new Blob([GM_getResourceText('stockFish.js')], {type: 'application/javascript'}));
}
if(!wasmObjectURL) {
wasmObjectURL = URL.createObjectURL(new Blob([GM_getResourceText('stockFish.wasm.js')], {type: 'application/javascript'}));
}
if(!wasmFile) {
wasmFile = URL.createObjectURL(new Blob([GM_getResourceText('stockFish.wasm')], {type: 'application/wasm'}));
}
console.log(lozzaObjectURL);
console.log(wasmObjectURL);
var wasmSupported = typeof WebAssembly === 'object' && WebAssembly.validate(Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00));
console.log('Webassembly supported: '+wasmSupported);
if(lozzaObjectURL && wasmObjectURL) {
engine.engine = new Worker(wasmSupported ? wasmObjectURL : lozzaObjectURL);
//engine.engine = new Worker(lozzaObjectURL);
engine.engine.onmessage = e => {
parser(e);
};
engine.engine.onerror = e => {
console.log("Worker Error: "+e);
};
engine.engine.postMessage('ucinewgame');
}
console.log('loaded chess engine');
}(The code tag wasn't working on GitHub for me. :( )
I'm currently trying to load the files through blob and stockfish.wasm.js can't find the stockfist.wasm file.
latest merge seems to break search on lichess.org
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