(incomplete) support for the stockfish engine.

1 files changed, 62 insertions, 0 deletions

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+;;; chess-uci.el --- Universal chess interface protocol for emacs-chess
+
+;; Copyright (C) 2014  Free Software Foundation, Inc.
+
+;; Author: Mario Lang <mlang@delysid.org>
+;; Keywords: games
+
+;; This file is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; This file is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(require 'chess-common)
+
+(defvar chess-uci-move-regexp "[a-h][1-8][a-h][1-8][nbrq]?"
+  "A regular expression matching a UCI move.")
+
+(defun chess-uci-position (game)
+  (concat "position fen " (chess-pos-to-fen (chess-game-pos game 0) t)
+	  " moves " (mapconcat (lambda (ply)
+				 (let ((source (chess-ply-source ply))
+				       (target (chess-ply-target ply)))
+				   (if (and source target)
+				       (concat (chess-index-to-coord source)
+					       (chess-index-to-coord target)
+					       (if (chess-ply-keyword ply :promote)
+						   (string (downcase (chess-ply-keyword ply :promote)))
+						 ""))
+				     "")))
+			       (chess-game-plies game) " ")
+	  "\n"))
+
+(defun chess-uci-handler (game event &rest args)
+  (unless chess-engine-handling-event
+    (cond
+     ((eq event 'move)
+      (when (= 1 (chess-game-index game))
+	(chess-game-set-tag game "White" chess-full-name)
+	(chess-game-set-tag game "Black" chess-engine-opponent-name))
+
+      (chess-engine-send nil (concat (chess-uci-position game) "go\n"))
+      (if (chess-game-over-p game)
+	  (chess-game-set-data game 'active nil)))
+
+     (t
+      (apply 'chess-common-handler game event args)))))
+
+(provide 'chess-uci)
+
+;;; chess-uci.el ends here