/*
DroidFish - An Android chess program.
Copyright (C) 2011 Peter Ă–sterlund, peterosterlund2@gmail.com
Copyright (C) 2012 Leo Mayer
This program 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.
This program 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/>.
*/
package com.if3games.chessonline.gamelogic;
/**
* Constants for different piece types.
* @author petero
*/
public class Piece {
public static final int EMPTY = 0;
public static final int WKING = 1;
public static final int WQUEEN = 2;
public static final int WROOK = 3;
public static final int WBISHOP = 4;
public static final int WKNIGHT = 5;
public static final int WPAWN = 6;
public static final int BKING = 7;
public static final int BQUEEN = 8;
public static final int BROOK = 9;
public static final int BBISHOP = 10;
public static final int BKNIGHT = 11;
public static final int BPAWN = 12;
public static final int nPieceTypes = 13;
// Unicode for color neutral chess pieces
public static final char NOTATION_KING = 0xe050;
public static final char NOTATION_QUEEN = 0xe051;
public static final char NOTATION_ROOK = 0xe052;
public static final char NOTATION_BISHOP = 0xe053;
public static final char NOTATION_KNIGHT = 0xe054;
public static final char NOTATION_PAWN = 0xe055;
// Unicode for white chess pieces
public static final char WHITE_KING = 0x2654;
public static final char WHITE_QUEEN = 0x2655;
public static final char WHITE_ROOK = 0x2656;
public static final char WHITE_BISHOP = 0x2657;
public static final char WHITE_KNIGHT = 0x2658;
public static final char WHITE_PAWN = 0x2659;
// Unicode for black chess pieces
public static final char BLACK_KING = 0x265A;
public static final char BLACK_QUEEN = 0x265B;
public static final char BLACK_ROOK = 0x265C;
public static final char BLACK_BISHOP = 0x265D;
public static final char BLACK_KNIGHT = 0x265E;
public static final char BLACK_PAWN = 0x265F;
/**
* Return true if p is a white piece, false otherwise.
* Note that if p is EMPTY, an unspecified value is returned.
*/
public static boolean isWhite(int pType) {
return pType < BKING;
}
public static int makeWhite(int pType) {
return pType < BKING ? pType : pType - (BKING - WKING);
}
public static int makeBlack(int pType) {
return ((pType >= WKING) && (pType <= WPAWN)) ? pType + (BKING - WKING) : pType;
}
public static int swapColor(int pType) {
if (pType == EMPTY)
return EMPTY;
return isWhite(pType) ? pType + (BKING - WKING) : pType - (BKING - WKING);
}
/** Converts the piece into a character for the material diff. */
public final static char toUniCode(int p) {
// As we assume, the coding of the pieces is sequential, lets do some math.
return (char)(WHITE_KING + p - 1);
}
}