Egaroucid 7.8, modified for reversi.plyyard.com
================================================

This directory is the Corresponding Source for the files served beside it:

  ../egaroucid.js
  ../egaroucid.wasm
  ../egaroucid.data

Upstream
--------
Egaroucid by Takuto Yamana and other contributors.
https://github.com/Nyanyan/Egaroucid
Commit e4bd1db
Engine version 7.8 (EGAROUCID_ENGINE_VERSION in src/engine/version.hpp)
License: GNU General Public License, version 3 or any later version.
The license text is LICENSE in this directory (open it on the web as LICENSE.txt) and ../LICENSE.txt.

Modification
------------
Modified 2026-10-07 by Ply Yard for the Reversi site at reversi.plyyard.com.

  src/engine/ai.hpp
    The time-limited search can stop between depths and publish the best
    move found so far.
  src/engine/hash.hpp
    Hash size is reduced so the WebAssembly build fits in the browser.
  src/engine/setting.hpp
    The transposition table is kept off the stack for the WebAssembly build.
  src/lib/egaroucid_c_api.cpp
    Search can run beside the page, stop early, honor a time limit, report
    live progress, and resize the worker thread pool.
  wasm-boot.cpp
    New file. Starts and stops a search, reports progress, and sets the
    thread count for the browser build.

reversi-wasm.patch is the diff of those four upstream files against commit
e4bd1db, including the modification notices.

The JavaScript that loads the compiled engine and calls it directly is
glue/worker-entry.ts. It is part of this combined engine program and is
covered by the same GPL-3.0-or-later terms. The rest of the website
(pages, rules text, and brand marks) is a separate work.

Build
-----
build-wasm.sh is the script used from the site repository. It expects the
Egaroucid checkout in EGAROUCID_SRC (this directory already contains the
modifications) and emscripten on PATH.

build-here.sh rebuilds the three files in the parent directory from this
tree alone. It needs the Emscripten SDK activated (emsdk_env.sh) and
writes ../egaroucid.js, ../egaroucid.wasm, and ../egaroucid.data.

Evaluation data
---------------
bin/resources/eval.egev2
bin/resources/eval_move_ordering_end.egev

These two files are the preferred form of the weights packed into
../egaroucid.data. They come from the upstream bin/resources directory
at the same commit and are not regenerated from the C++ sources.