src/xboardengine.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.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
  11 #ifndef XBOARDENGINE_H
  12 #define XBOARDENGINE_H
  13
  14 #include "engine.h"
  15 #include "tagua.h"
  16
  17 class QRegExp;
  18
  19 /**
  20   * @brief A chess engine compatible with xboard.
  21   *
  22   * XBoard compatible engines are defined by Tim Mann's
  23   * Chess Engine Communication Protocol (available at
  24   * http://tim-mann.org/xboard/engine-intf.html), used
  25   * by GNU Chess, Crafty and many other free and commercial
  26   * chess engines.
  27   * This class encapsulates such communication protocol,
  28   * calling appropriate methods of the notifier upon engine
  29   * generated events.
  30   *
  31   * @note This code is partially stolen from Maurizio Monge's
  32   *       old interface project outoftime.
  33   */
  34 class XBoardEngine : public Engine {
  35 Q_OBJECT
  36   struct Features {
  37     bool ping         : 1;
  38     bool setboard     : 1;
  39     bool playother    : 1;
  40     bool san          : 1;
  41     bool usermove     : 1;
  42     bool time         : 1;
  43     bool draw         : 1;
  44     bool sigint       : 1;
  45     bool sigterm      : 1;
  46     bool reuse        : 1;
  47     bool analyze      : 1;
  48     QString myname;
  49     QString variants;
  50     bool colors       : 1;
  51     bool ics          : 1;
  52     bool name         : 1;
  53     bool pause        : 1;
  54     bool done         : 1;
  55   };
  56
  57   Features m_features;
  58   bool m_analysing;
  59
  60   static QRegExp m_move_pattern;
  61 protected:
  62   /**
  63     * Initialize the engine.
  64     */
  65   virtual void initializeEngine();
  66 protected Q_SLOTS:
  67   /**
  68     * Parse engine command line and the appropriate
  69     * signals.
  70     */
  71   void processCommand(const QString& command);
  72 public:
  73   /**
  74     * Create an xboard compatible engine.
  75     */
  76   XBoardEngine(const QString& path, const QStringList& arguments);
  77
  78   /**
  79     * Terminate the engine.
  80     */
  81   virtual ~XBoardEngine();
  82
  83   /**
  84     * Send a move to the engine.
  85     */
  86   virtual void sendMove(AbstractMove::Ptr move, AbstractPosition::Ptr ref);
  87
  88   /**
  89     * Back up a move.
  90     * @param pos The position before the move. Used if the engine
  91     *            does not support the undo command.
  92     */
  93   virtual void backUp(AbstractPosition::Ptr pos);
  94
  95   virtual void setBoard(AbstractPosition::Ptr pos, int halfmove, int fullmove);
  96
  97
  98   /**
  99     * Begin a new game.
 100     */
 101   virtual void reset();
 102
 103   /**
 104     * Start playing.
 105     */
 106   virtual void play();
 107
 108   /**
 109     * Stop the engine.
 110     */
 111   virtual void stop();
 112
 113   virtual void startAnalysis();
 114   virtual void stopAnalysis();
 115 };
 116
 117 #endif // XBOARDENGINE_H