/*
  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
  Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad

  Stockfish is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  Stockfish is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/


////
//// Includes
////

#include <string>

#include "piece.h"

using namespace std;

// Tables indexed by Piece

const Value PieceValueMidgame[17] = {
  VALUE_ZERO,
  PawnValueMidgame, KnightValueMidgame, BishopValueMidgame,
  RookValueMidgame, QueenValueMidgame,
  VALUE_ZERO, VALUE_ZERO, VALUE_ZERO,
  PawnValueMidgame, KnightValueMidgame, BishopValueMidgame,
  RookValueMidgame, QueenValueMidgame,
  VALUE_ZERO, VALUE_ZERO, VALUE_ZERO
};

const Value PieceValueEndgame[17] = {
  VALUE_ZERO,
  PawnValueEndgame, KnightValueEndgame, BishopValueEndgame,
  RookValueEndgame, QueenValueEndgame,
  VALUE_ZERO, VALUE_ZERO, VALUE_ZERO,
  PawnValueEndgame, KnightValueEndgame, BishopValueEndgame,
  RookValueEndgame, QueenValueEndgame,
  VALUE_ZERO, VALUE_ZERO, VALUE_ZERO
};

const int SlidingArray[18] = {
  0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
};


////
//// Functions
////

/// Translating piece types to/from English piece letters

static const string PieceChars(" pnbrqk PNBRQK");

char piece_type_to_char(PieceType pt, bool upcase) {

  return PieceChars[pt + int(upcase) * 7];
}

PieceType piece_type_from_char(char c) {

  size_t idx = PieceChars.find(c);

  return idx != string::npos ? PieceType(idx % 7) : PIECE_TYPE_NONE;
}