code.delx.au - gnu-emacs-elpa/blob - packages/chess/chess-fruit.el

   1 ;;; chess-fruit.el --- Play against fruit!
   2
   3 ;; Copyright (C) 2014  Free Software Foundation, Inc.
   4
   5 ;; Author: Mario Lang <mlang@delysid.org>
   6 ;; Keywords: games
   7
   8 ;; This file is free software; you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation; either version 2, or (at your option)
  11 ;; any later version.
  12
  13 ;; This file is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  20 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21 ;; Boston, MA 02111-1307, USA.
  22
  23 ;;; Code:
  24
  25 (require 'chess-uci)
  26
  27 (defgroup chess-fruit nil
  28   "The publically available chess engine 'fruit'."
  29   :group 'chess-engine
  30   :link '(url-link "http://www.fruitchess.com/"))
  31
  32 (defcustom chess-fruit-path (executable-find "fruit")
  33   "*The path to the fruit executable."
  34   :type 'file
  35   :group 'chess-fruit)
  36
  37 (defvar chess-fruit-regexp-alist chess-uci-regexp-alist
  38   "Patterns used to match engine output.")
  39
  40 (defun chess-fruit-handler (game event &rest args)
  41   (unless chess-engine-handling-event
  42     (cond
  43      ((eq event 'initialize)
  44       (let ((proc (chess-uci-handler game 'initialize "fruit")))
  45         (when (and proc (processp proc) (eq (process-status proc) 'run))
  46           (process-send-string proc "uci\n")
  47           (setq chess-engine-process proc)
  48           t)))
  49
  50      (t
  51       (if (and (eq event 'undo)
  52                (= 1 (mod (car args) 2)))
  53           (error "Cannot undo until after fruit moves"))
  54
  55       (apply 'chess-uci-handler game event args)))))
  56
  57 (provide 'chess-fruit)
  58
  59 ;;; chess-fruit.el ends here