Class: Games_Chess_Crazyhouse

Source Location: /Games_Chess-0.9.0/Chess/Crazyhouse.php

Class Overview

Games_Chess
   |
   --Games_Chess_Standard
      |
      --Games_Chess_Crazyhouse

Crazyhouse chess game

Author(s):

Gregory Beaver <cellog at php.net>

Inherited Variables

Inherited Methods

Class: Games_Chess_Standard

Games_Chess_Standard::addPiece(): Add a piece to the chessboard
Games_Chess_Standard::blankBoard(): Set up a blank chess board
Games_Chess_Standard::inCheck(): Determine whether one side's king is in check by the other side's pieces
Games_Chess_Standard::isBishop(): Determine whether a piece name is a bishop
Games_Chess_Standard::isKing(): Determine whether a piece name is a king
Games_Chess_Standard::isPawn(): Determine whether a piece name is a pawn
Games_Chess_Standard::isRook(): Determine whether a piece name is a rook
Games_Chess_Standard::toArray(): Generate a representation of the chess board and pieces for use as a
Games_Chess_Standard::_getAllPieceLocations(): Get the location of every piece on the board of color $color
Games_Chess_Standard::_getAllPieceSquares(): Retrieve the locations of all pieces of the same type as $piece
Games_Chess_Standard::_getColor(): Retrieve the color of a piece from its name
Games_Chess_Standard::_getKing(): Get the location of the king
Games_Chess_Standard::_getPiece(): Get the location of a piece
Games_Chess_Standard::_getPieceTypes(): Get a list of all pieces on the board organized by the type of piece, and the color of the square the piece is on.
Games_Chess_Standard::_getPossibleChecks(): Used to determine check
Games_Chess_Standard::_isKnight(): Determine whether a piece name is a knight
Games_Chess_Standard::_isQueen(): Determine whether a piece name is a queen
Games_Chess_Standard::_renderFen(): Render the current board position into Farnsworth-Edwards Notation
Games_Chess_Standard::_setupStartingPosition(): Set up a starting position for a new chess game
Games_Chess_Standard::_squareToPiece(): Translate an algebraic coordinate into the color and name of a piece,
Games_Chess_Standard::_takePiece(): Mark a piece as having been taken. No validation is performed

Class: Games_Chess

Games_Chess::addPiece(): Add a piece to the chessboard
Games_Chess::blankBoard(): Create a blank chessboard with no pieces on it
Games_Chess::canCastleKingside(): Determine legality of kingside castling
Games_Chess::canCastleQueenside(): Determine legality of queenside castling
Games_Chess::commitTransaction(): Remove any possibility of undo.
Games_Chess::factory()
Games_Chess::gameOver()
Games_Chess::getDiagonalColor()
Games_Chess::getMessage(): Get an error message from the code
Games_Chess::getMoveList(): Get the list of moves in Standard Algebraic Notation
Games_Chess::getPieceLocations(): Get the location of all pieces on the board of a certain color
Games_Chess::getPossibleBishopMoves(): Get all legal Bishop moves (checking of the king is not taken into account)
Games_Chess::getPossibleKingMoves(): Get all legal King moves (checking of the king is not taken into account)
Games_Chess::getPossibleKnightMoves(): Get all legal Knight moves (checking of the king is not taken into account)
Games_Chess::getPossibleMoves(): Get a list of all possible theoretical squares a piece of this nature and color could move to with the current board and game setup.
Games_Chess::getPossiblePawnMoves(): Get all legal Pawn moves (checking of the king is not taken into account)
Games_Chess::getPossibleQueenMoves(): Get all legal Queen moves (checking of the king is not taken into account)
Games_Chess::getPossibleRookMoves(): Get all legal Rook moves (checking of the king is not taken into account)
Games_Chess::getState(): Get the current state of the chess game
Games_Chess::in50MoveDraw(): Determine whether any pawn move or capture has occurred in the past 50 moves
Games_Chess::inBasicDraw(): Determine the presence of a basic draw as defined by FIDE rules
Games_Chess::inCheckMate(): Determine whether a side is in checkmate
Games_Chess::inDraw(): Determines the presence of a forced draw
Games_Chess::inRepetitionDraw(): Determine whether draw by repetition has happened
Games_Chess::inStaleMate(): Determine whether a side is in stalemate
Games_Chess::isError(): Determines whether the data returned from a method is a PEAR-related
Games_Chess::isPromoteMove(): Determine whether moving a piece from one square to another requires
Games_Chess::moveSAN(): Make a move from a Standard Algebraic Notation (SAN) format
Games_Chess::moveSquare(): Move a piece from one square to another, and mark the old square as empty
Games_Chess::raiseError()
Games_Chess::renderFen(): render the FEN notation for the current board
Games_Chess::resetGame(): Create a new game with the starting position, or from the position specified by $fen
Games_Chess::rollbackTransaction(): Undo any changes to state since startTransaction() was first used
Games_Chess::setState(): Set the state of the chess game
Games_Chess::startTransaction(): Begin a chess piece transaction
Games_Chess::toArray(): Generate a representation of the chess board and pieces for use as a direct translation to a visual chess board
Games_Chess::toMove()
Games_Chess::_convertSquareToSAN(): Convert a starting and ending algebraic square into SAN
Games_Chess::_getAllPieceLocations(): Get the location of every piece on the board of color $color
Games_Chess::_getCastleSquares(): Get a list of all the squares a king could castle to on an empty board
Games_Chess::_getDiagonalColor(): Return the color of a square (black or white)
Games_Chess::_getKingSquares(): Get a list of all the squares a king could move to on an empty board
Games_Chess::_getKnightSquares(): Get all the squares a knight could move to on an empty board
Games_Chess::_getQueenSquares(): Get all the squares a queen could go to on a blank board
Games_Chess::_getRookSquares(): Get the set of squares that are diagonals from this square on an empty board.
Games_Chess::_moveAlgebraic(): Move a piece from one square to another, and mark the old square as empty
Games_Chess::_parseMove(): Parse out the segments of a move (minus any annotations)
Games_Chess::_setupStartingPosition(): Set up the board with the starting position
Games_Chess::_validMove(): Validate a move

Class Details

[line 41]
Crazyhouse chess game

A captured piece may be placed on the board as your own piece! Note that FEN is incapable of setting up a game mid-swing - no record of captured pieces is possible. If requested, a future version may extend the FEN standard to allow this, particularly if ICC follows the same standard

Author: Gregory Beaver <cellog@php.net>

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Method Detail

addPiece [line 931]

true|PEAR_Error addPiece(
W|B
$color, K|Q|R|N|P|B
$type, string
$square)

Add a piece to the chessboard

Throws: GAMES_CHESS_ERROR_INVALIDSQUARE
Throws: GAMES_CHESS_ERROR_DUPESQUARE
Throws: GAMES_CHESS_ERROR_MULTIPIECE

Overrides Games_Chess_Standard::addPiece() (Add a piece to the chessboard)

Parameters:

W\|B	`$color`	—	piece color
K\|Q\|R\|N\|P\|B	`$type`	—	Piece type
string	`$square`	—	[a-h][1-8] algebraic location of piece

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blankBoard [line 104]

void blankBoard(
)

Set up a blank chess board

Overrides Games_Chess_Standard::blankBoard() (Set up a blank chess board)

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in50MoveDraw [line 998]

false in50MoveDraw(
)

50 move draw is not allowed in crazyhouse

Overrides Games_Chess::in50MoveDraw() (Determine whether any pawn move or capture has occurred in the past 50 moves)

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inBasicDraw [line 980]

false inBasicDraw(
)

Basic draw is impossible in crazyhouse, because it is always possible

to place another piece

Overrides Games_Chess::inBasicDraw() (Determine the presence of a basic draw as defined by FIDE rules)

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inCheck [line 878]

string|array|false inCheck(
W|B
$color)

Determine whether one side's king is in check by the other side's pieces

Return: square of checking piece(s) or false

Overrides Games_Chess_Standard::inCheck() (Determine whether one side's king is in check by the other side's pieces)

Parameters:

W|B $color — color of pieces to determine enemy check

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inRepetitionDraw [line 989]

false inRepetitionDraw(
)

Repetition draw is not allowed in crazyhouse

Overrides Games_Chess::inRepetitionDraw() (Determine whether draw by repetition has happened)

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isBishop [line 681]

boolean isBishop(
string
$piece)

Determine whether a piece name is a bishop

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Overrides Games_Chess_Standard::isBishop() (Determine whether a piece name is a bishop)

Parameters:

string $piece —

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isKing [line 652]

boolean isKing(
string
$piecename)

Determine whether a piece name is a king

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Access: protected

Overrides Games_Chess_Standard::isKing() (Determine whether a piece name is a king)

Parameters:

string $piecename —

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isPawn [line 711]

boolean isPawn(
string
$piece)

Determine whether a piece name is a pawn

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Overrides Games_Chess_Standard::isPawn() (Determine whether a piece name is a pawn)

Parameters:

string $piece —

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isRook [line 696]

boolean isRook(
string
$piece)

Determine whether a piece name is a rook

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Overrides Games_Chess_Standard::isRook() (Determine whether a piece name is a rook)

Parameters:

string $piece —

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moveSAN [line 246]

true|PEAR_Error moveSAN(
string
$move)

Make a move from a Standard Algebraic Notation (SAN) format

SAN is just a normal chess move like Na4, instead of the English Notation, like NR4

Overrides Games_Chess::moveSAN() (Make a move from a Standard Algebraic Notation (SAN) format)

Parameters:

string $move —

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toArray [line 898]

void toArray(
)

Overrides Games_Chess_Standard::toArray() (Generate a representation of the chess board and pieces for use as a)

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_getAllPieceLocations [line 810]

void _getAllPieceLocations(
W|B
$color)

Get the location of every piece on the board of color $color

Access: protected

Overrides Games_Chess_Standard::_getAllPieceLocations() (Get the location of every piece on the board of color $color)

Parameters:

W|B $color — color of pieces to check

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_getAllPieceSquares [line 392]

array _getAllPieceSquares(
K|B|N|R|W|P
$piece, W|B
$color, [string
$exclude = null])

Retrieve the locations of all pieces of the same type as $piece

Access: protected

Overrides Games_Chess_Standard::_getAllPieceSquares() (Retrieve the locations of all pieces of the same type as $piece)

Parameters:

K\|B\|N\|R\|W\|P	`$piece`	—
W\|B	`$color`	—
string	`$exclude`	—	[a-h][1-8] optional square of piece to exclude from the listing

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_getKing [line 596]

false|string _getKing(
[
$color = null])

Get the location of the king

assumes valid color input

Access: protected

Overrides Games_Chess_Standard::_getKing() (Get the location of the king)

Parameters:

$color —

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_getPiece [line 620]

string|array _getPiece(
string
$piece)

Get the location of a piece

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Access: protected

Overrides Games_Chess_Standard::_getPiece() (Get the location of a piece)

Parameters:

string $piece —

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_getPieceTypes [line 765]

array _getPieceTypes(
)

Get a list of all pieces on the board organized by the type of piece, and the color of the square the piece is on.

Used to determine basic draw conditions

Return:

Format:

 array(
   // white pieces
   'W' => array('B' => array('W', 'B'), // all bishops
                'K' => array('W'),...
               ),
   // black pieces
   'B' => array('Q' => array('B'), // all queens
                'K' => array('W'),... // king is on white square

Access: protected

Overrides Games_Chess_Standard::_getPieceTypes() (Get a list of all pieces on the board organized by the type of piece, and the color of the square the piece is on.)

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_getPossibleChecks [line 790]

array _getPossibleChecks(
W|B
$color)

Used to determine check

Retrieve all of the moves of the pieces matching the color passed in.

Access: protected

Overrides Games_Chess_Standard::_getPossibleChecks() (Used to determine check)

Parameters:

W|B $color —

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_isKnight [line 636]

boolean _isKnight(
string
$piece)

Determine whether a piece name is a knight

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Access: protected

Overrides Games_Chess_Standard::_isKnight() (Determine whether a piece name is a knight)

Parameters:

string $piece —

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_isQueen [line 666]

boolean _isQueen(
string
$piece)

Determine whether a piece name is a queen

This does NOT take an algebraic square as the argument, but the contents of _board[algebraic square]

Access: protected

Overrides Games_Chess_Standard::_isQueen() (Determine whether a piece name is a queen)

Parameters:

string $piece —

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_renderFen [line 830]

string _renderFen(
)

Render the current board position into Farnsworth-Edwards Notation

This method only renders the board contents, not the castling and other information

Access: protected

Overrides Games_Chess_Standard::_renderFen() (Render the current board position into Farnsworth-Edwards Notation)

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_setupStartingPosition [line 146]

void _setupStartingPosition(
)

Set up a starting position for a new chess game

Access: protected

Overrides Games_Chess_Standard::_setupStartingPosition() (Set up a starting position for a new chess game)

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_squareToPiece [line 367]

false|array _squareToPiece(
string
$square)

Translate an algebraic coordinate into the color and name of a piece,

or false if no piece is on that square

Return: Format array('color' => B|W, 'piece' => P|R|Q|N|K|B)
Access: protected

Overrides Games_Chess_Standard::_squareToPiece() (Translate an algebraic coordinate into the color and name of a piece,)

Parameters:

string $square — [a-h][1-8]

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