referee
Class Board

java.lang.Object
  referee.Board

public class Board
extends java.lang.Object

Title: Board

Description: Represents a checker position

Copyright: Copyright (c) 2004

Company: Eastern Michigan University

Version:

1.0

Author:

Matthew Evett

Field Summary

static int	BLACK_KING In an array of ints, ARR, representing a board position, this value at ARR[i] indicates that there is a black king at position i.
static int	BLACK_PAWN Indicates there is a black pawn at position i.
static int	NO_PIECE Indicates there is no piece at position i.
static int	NUM_SQUARES Number of legal positions on a game board
static int	WHITE_KING Indicates there is a white king at position i.
static int	WHITE_PAWN Indicates there is a white pawn at position i.

Constructor Summary

Board()
Generates a starting board.

Board(Board orig)
Copy constructor.

Board(int[] boardArr, boolean isWhitePlayer)
Constructs a board with pieces arranged as specified by boardArr.

Method Summary

boolean	isNoLegalMove()
boolean	isWhitesMove()
static void	main(java.lang.String[] args)
int	numBlacks() numBlacks
int	numWhites() numWhites
int[]	toArray() toArray
java.lang.String	toString()
java.lang.Object	updateBoard(int[] move) Modify the board to reflect the given move.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NUM_SQUARES

public static final int NUM_SQUARES

Number of legal positions on a game board

See Also:

Constant Field Values

BLACK_KING

public static final int BLACK_KING

In an array of ints, ARR, representing a board position, this value at ARR[i] indicates that there is a black king at position i.

See Also:

Constant Field Values

NO_PIECE

public static final int NO_PIECE

Indicates there is no piece at position i.

See Also:

Constant Field Values

WHITE_PAWN

public static final int WHITE_PAWN

Indicates there is a white pawn at position i.

See Also:

Constant Field Values

WHITE_KING

public static final int WHITE_KING

Indicates there is a white king at position i.

See Also:

Constant Field Values

BLACK_PAWN

public static final int BLACK_PAWN

Indicates there is a black pawn at position i.

See Also:

Constant Field Values

Constructor Detail

Board

public Board()

Generates a starting board. Black pawns occupy spaces 1-12, white pawns occupy spaces 21-32.

Board

public Board(Board orig)

Copy constructor.

Parameters:

orig - Board

Board

public Board(int[] boardArr,
             boolean isWhitePlayer)

Constructs a board with pieces arranged as specified by boardArr. It will be White's turn if isWhitePlayer is true, otherwise it is Black's turn.

Parameters:

boardArr - int[]

isWhitePlayer - boolean

Method Detail

isWhitesMove

public boolean isWhitesMove()

Returns:

True if it is white's move

updateBoard

public java.lang.Object updateBoard(int[] move)

Modify the board to reflect the given move. Move is a sequence (stored in an array) of board positions. A single move will consist of just two integers = the first and last positions. E.g: 6, 1. Jumps may consist of longer sequences, providing that the "skipped" position contained an opposition piece. E.g: 10, 1. Jumps may be concatenated, forming longer sequences: e.g.: 17, 10, 1 * @author Matthew Evett

Returns:

board resulting from the move, or a String indicating why it was illegal

numWhites

public int numWhites()

numWhites

Returns:

Number of white pieces on the board

numBlacks

public int numBlacks()

numBlacks

Returns:

Number of black pieces on the board

toArray

public int[] toArray()

toArray

Returns:

int[] The board's position encoded as an array, b, where b[i] encodes the piece at position i on the board (b[i] = -2 for black king, -1 for black pawn, 1 for white pawn, 2 for white king, and 0 if position i is unoccupied.) b[0] is unused.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

String that is a printable representation of the board position.

main

public static void main(java.lang.String[] args)

isNoLegalMove

public boolean isNoLegalMove()

Returns:

True if there is no legal move for the current player.