src/variants/shogi/behaviour.cpp

   1 /*
   2   Copyright (c) 2007 Paolo Capriotti <p.capriotti@gmail.com>
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8 */
   9
  10 #include "behaviour.h"
  11
  12 #include <core/board.h>
  13 #include <core/color.h>
  14 #include <core/move.h>
  15 #include <core/piece.h>
  16 #include <core/poolcollection.h>
  17 #include <core/pool.h>
  18 #include <core/state.h>
  19
  20 #include <KDebug>
  21
  22 namespace Shogi {
  23
  24 Behaviour::Behaviour(IBehaviour* behaviour)
  25 : Delegators::Behaviour(behaviour)
  26 , m_promotionmanager(NULL)
  27 , m_delegator(this) { }
  28
  29 IBehaviour* Behaviour::clone() const {
  30   IBehaviour* dgate_clone;
  31   Q_ASSERT(QMetaObject::invokeMethod(m_dgate_behaviour, "clone",
  32                                      Q_RETURN_ARG(IBehaviour*, dgate_clone)));
  33   Behaviour* b = new Behaviour(dgate_clone);
  34   //FIXME: b->m_promotionmanager = m_promotionmanager->clone();
  35   b->m_promotionmanager = m_promotionmanager;
  36   return b;
  37 }
  38
  39 void Behaviour::captureOn(IState* state, const Point& square) const {
  40   Piece* captured = state->board()->get(square);
  41   if (captured != NULL && *captured != Piece()) {
  42     if (captured->get("promoted").toBool()) {
  43       if (promotionManager())
  44         captured->setType(promotionManager()->getDepromotion(captured->type()));
  45     }
  46     state->pools()->pool(opponent(captured->color()))->insert(-1, *captured);
  47   }
  48   m_dgate_behaviour->captureOn(state, square);
  49 }
  50
  51 bool Behaviour::mayPromote(const IState* state, const Move& move) const {
  52   // promoted piece cannot promote again
  53   if (move.promotion())
  54     return false;
  55
  56   // does that piece type can even promote ?
  57   if (promotionManager() == NULL ||
  58       promotionManager()->getPromotion(state->board()->get(move.src())->type()) == NULL)
  59     return false;
  60
  61   // move starts or ends on the promotion rows on the other side ?
  62   unsigned pzwidth;
  63   Q_ASSERT(QMetaObject::invokeMethod(m_delegator, "promotionZoneWidth",
  64                                      Q_RETURN_ARG(unsigned, pzwidth)));
  65   return ((state->turn() == Black::self()) ?
  66           (move.src().y >= state->board()->size().y - pzwidth ||
  67            move.dst().y >= state->board()->size().y - pzwidth) :
  68           (move.src().y < pzwidth ||
  69            move.dst().y < pzwidth));
  70 }
  71
  72 void Behaviour::setDelegator(IBehaviour* behaviour) {
  73   Delegators::Behaviour::setDelegator(behaviour);
  74   m_delegator = behaviour;
  75 }
  76
  77 IBehaviour* Behaviour::clone(PromotionManager* pm) const {
  78   Behaviour* b = dynamic_cast<Behaviour*>(clone()); // FIXME: cannot use static_cast ?
  79   Q_ASSERT(b);
  80   if (pm)
  81     b->m_promotionmanager = pm;
  82   return b;
  83 }
  84
  85 } // namespace Shogi