src/variants/chess/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/state.h>
  16
  17 namespace Chess {
  18
  19 Behaviour::Behaviour()
  20 : IBehaviour() { }
  21 Behaviour::Behaviour(const Behaviour& other)
  22 : IBehaviour() { }
  23
  24 void Behaviour::captureOn(IState* state, const Point& square) const {
  25     state->board()->set(square, Piece());
  26 }
  27
  28 void Behaviour::move(IState* state, const Move& m) const {
  29   if (m.dst() != m.src()) {
  30     state->board()->set(m.dst(), state->board()->get(m.src()));
  31     state->board()->set(m.src(), Piece());
  32   }
  33 }
  34
  35 void Behaviour::advanceTurn(IState* state) const {
  36   state->setTurn(opponent(state->turn()));
  37 }
  38
  39 Point Behaviour::captureSquare(const IState*, const Move& m) const {
  40   if (m.type() == "en_passant_capture")
  41     return Point(m.dst().x, m.src().y);
  42   else
  43     return m.dst();
  44 }
  45
  46 const IColor* Behaviour::opponent(const IColor* player) const {
  47   return player == White::self()
  48     ? static_cast<IColor*>(Black::self())
  49     : static_cast<IColor*>(White::self());
  50 }
  51
  52 Point Behaviour::direction(const IColor* player) const {
  53   return Point(0, player == White::self() ? -1 : 1);
  54 }
  55
  56 IBehaviour* Behaviour::clone() const {
  57   return new Behaviour(*this);
  58 }
  59
  60 } // namespace Chess