src/hlvariant/minishogi/gamestate.h

   1 /*
   2   Copyright (c) 2007 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2007 Maurizio Monge <maurizio.monge@kdemail.net>
   4             (c) 2007 Yann Dirson <ydirson@altern.org>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation; either version 2 of the License, or
   9   (at your option) any later version.
  10 */
  11
  12 #ifndef HLVARIANT__MINISHOGI__GAMESTATE_H
  13 #define HLVARIANT__MINISHOGI__GAMESTATE_H
  14
  15 #include "../shogi/gamestate.h"
  16 #include "../shogi/piece.h"
  17
  18 namespace HLVariant {
  19 namespace MiniShogi {
  20
  21 template <typename _Board, typename _Move>
  22   class GameState:
  23   public Shogi::GameState<_Board, _Move> {
  24 public:
  25   virtual void setup();
  26   virtual bool promotionZone(typename Shogi::Piece::Color player, const Point& p) const;
  27 };
  28
  29 // IMPLEMENTATION
  30
  31 #define MS_COL(i, c) c == Shogi::Piece::BLACK ? (i) :           \
  32   (Shogi::GameState<Board, Move>::board().size().x - i - 1)
  33 #define MS_ROW(i, c) rank + i * Shogi::GameState<Board, Move>::direction(color).y
  34 #define MS_PIECE(x,y,p) Shogi::GameState<Board, Move>::board().set(Point(MS_COL(x, c), MS_ROW(y, c)), \
  35                                                                 Shogi::Piece(color, p))
  36 template <typename Board, typename Move>
  37 void GameState<Board, Move>::setup() {
  38   for (int c = 0; c < 2; c++) {
  39     typename Shogi::Piece::Color color = static_cast<typename Shogi::Piece::Color>(c);
  40     int rank = Shogi::GameState<Board, Move>::startingRank(color);
  41
  42     MS_PIECE(0, 0, Shogi::Piece::KING);
  43     MS_PIECE(1, 0, Shogi::Piece::GOLD);
  44     MS_PIECE(2, 0, Shogi::Piece::SILVER);
  45     MS_PIECE(3, 0, Shogi::Piece::BISHOP);
  46     MS_PIECE(4, 0, Shogi::Piece::ROOK);
  47
  48     MS_PIECE(0, 1, Shogi::Piece::PAWN);
  49  }
  50 }
  51 #undef MS_PIECE
  52 #undef MS_ROW
  53 #undef MS_COL
  54
  55 template <typename Board, typename Move>
  56 bool GameState<Board, Move>::promotionZone(typename Shogi::Piece::Color player, const Point& p) const {
  57   return player == Shogi::Piece::WHITE ? p.y == 4 : p.y == 0;
  58 }
  59
  60 } // namespace MiniShogi
  61 } // namespace HLVariant
  62
  63 #endif // HLVARIANT__MINISHOGI__GAMESTATE_H