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