src/engine.h

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2002-2006 Ben Kibbey <bjk@luxsci.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19 #ifndef ENGINE_H
  20 #define ENGINE_H
  21
  22 #if 0
  23 #define RETURN          status.engine = ENGINE_READY; \
  24                         return
  25 #endif
  26 #define RETURN return
  27
  28 #define SEND_TO_ENGINE(fmt, args...)    (engine_initialized) ? \
  29     send_to_engine(fmt, ##args) : 0
  30
  31 enum {
  32     ENGINE_OFFLINE = -1, ENGINE_READY, ENGINE_THINKING, ENGINE_INITIALIZING
  33 };
  34
  35 enum {
  36     HUMAN, ENGINE
  37 };
  38
  39 pid_t enginepid;
  40
  41 /* Chess engine file descriptors. 0 = from, 1 = to. */
  42 int enginefd[2];
  43 int engine_initialized;
  44
  45 // This is a failsafe when resuming a game.
  46 int oldhistorytotal;
  47
  48 void send_to_engine(const char *format, ...);
  49 int start_chess_engine();
  50 void set_engine_defaults();
  51 void stop_engine();
  52 int save_pgn(const char *filename, int isfifo, int saveindex);
  53
  54 #endif