src/variants/chess/king.cpp

   1 /*
   2   Copyright (c) 2007 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2007 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 #include "king.h"
  12 #include <core/move.h>
  13
  14 #include "castlingrules.h"
  15
  16 namespace Chess {
  17
  18 King::King() { }
  19
  20 QString King::name() const { return "king"; }
  21
  22 bool King::canMove(const Piece& piece, const Piece&,
  23                    Move& move, const IState* state) const {
  24   if (abs(move.delta().x) <= 1 && abs(move.delta().y) <= 1) return true;
  25   if (m_castling_rules)
  26     return m_castling_rules->canCastle(piece, move, state);
  27   return false;
  28 }
  29
  30 int King::index() const { return 10000; }
  31
  32 King* King::self() {
  33   static King s_instance;
  34   return &s_instance;
  35 }
  36
  37 void King::setCastlingRules(Component* castlingRules) {
  38   m_castling_rules = dynamic_cast<ICastlingRules*>(castlingRules);
  39   if (!m_castling_rules) m_castling_rules = new CastlingRulesAdaptor(castlingRules, false);
  40 }
  41
  42 }