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;;; chess-glaurung.el --- Play against glaurung!
;; Copyright (C) 2014 Free Software Foundation, Inc.
;; Author: Mario Lang <mlang@delysid.org>
;; Keywords: games, processes
;; This program 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 3 of the License, or
;; (at your option) any later version.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'chess-uci)
(defgroup chess-glaurung nil
"The publicly available chess engine 'glaurung'."
:group 'chess-engine
:link '(url-link "http://www.glaurungchess.com/"))
(defcustom chess-glaurung-path (executable-find "glaurung")
"*The path to the glaurung executable."
:type 'file
:group 'chess-glaurung)
(defvar chess-glaurung-regexp-alist chess-uci-regexp-alist
"Patterns used to match engine output.")
(defun chess-glaurung-handler (game event &rest args)
(unless chess-engine-handling-event
(cond
((eq event 'initialize)
(let ((proc (chess-uci-handler game 'initialize "glaurung")))
(when (and proc (processp proc) (eq (process-status proc) 'run))
(process-send-string proc "uci\n")
(setq chess-engine-process proc)
t)))
(t
(if (and (eq event 'undo)
(= 1 (mod (car args) 2)))
(error "Cannot undo until after glaurung moves"))
(apply 'chess-uci-handler game event args)))))
(provide 'chess-glaurung)
;;; chess-glaurung.el ends here
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