/**
* Add castling moves if available
*
* @return array the squares where the king can go
**/
protected function addCastlingSquares(King $king, array $squares)
{
$player = $king->getPlayer();
$rooks = PieceFilter::filterNotMoved(PieceFilter::filterClass(PieceFilter::filterAlive($player->getPieces()), 'Rook'));
if (empty($rooks)) {
return $squares;
}
$opponentControlledKeys = $this->getPlayerControlledKeys($player->getOpponent(), true);
foreach ($rooks as $rook) {
$kingX = $king->getX();
$kingY = $king->getY();
$dx = $kingX > $rook->getX() ? -1 : 1;
$possible = true;
foreach (array($kingX + $dx, $kingX + 2 * $dx) as $_x) {
$key = Board::postoKey($_x, $kingY);
if ($this->board->hasPieceByKey($key) || in_array($key, $opponentControlledKeys)) {
$possible = false;
break;
}
}
if ($possible) {
if (-1 === $dx && $this->board->hasPieceByKey(Board::postoKey($kingX - 3, $kingY))) {
} else {
$squares[] = $this->board->getSquareByKey($key);
}
}
}
return $squares;
}
/**
* Move a piece on the board
* Performs several validation before applying the move
*
* @param mixed $notation Valid algebraic notation (e.g. "a2 a4")
* @return void
*/
public function move($notation, array $options = array())
{
list($from, $to) = explode(' ', $notation);
if (!($from = $this->board->getSquareByKey($from))) {
throw new \InvalidArgumentException('Square ' . $from . ' does not exist');
}
if (!($to = $this->board->getSquareByKey($to))) {
throw new \InvalidArgumentException('Square ' . $to . ' does not exist');
}
if (!($piece = $from->getPiece())) {
throw new \InvalidArgumentException('No piece on ' . $from);
}
if (!$piece->getPlayer()->isMyTurn()) {
throw new \LogicException('Can not play ' . $from . ' ' . $to . ' - Not ' . $piece->getColor() . ' player turn');
}
$possibleMoves = $this->analyser->getPiecePossibleMoves($piece);
if (!$possibleMoves) {
throw new \LogicException($piece . ' can not move');
}
if (!in_array($to->getKey(), $possibleMoves)) {
throw new \LogicException($piece . ' can not go to ' . $to . ' (' . implode(',', $possibleMoves) . ')');
}
if ($killed = $to->getPiece()) {
$killed->setIsDead(true);
$this->board->remove($killed);
}
$this->board->move($piece, $to->getX(), $to->getY());
if ($this->stack) {
$this->stack->add(array('type' => 'move', 'from' => $from->getKey(), 'to' => $to->getKey()));
}
if (null === $piece->getFirstMove()) {
$piece->setFirstMove($this->game->getTurns());
}
// casting?
if ($piece instanceof King && 2 === abs($from->getX() - $to->getX())) {
$this->castling($piece, $to);
}
// promotion?
if ($piece instanceof Pawn && $to->getY() === ($piece->getPlayer()->isWhite() ? 8 : 1)) {
$this->promotion($piece, $options);
}
// enpassant?
if ($piece instanceof Pawn && $to->getX() !== $from->getX() && !$killed) {
$this->enpassant($piece, $to);
}
}
public function getSquare()
{
return $this->board->getSquareByKey(Board::posToKey($this->x, $this->y));
}
/**
* @depends testBoardCreation
*/
public function testGetSquareByPos(Board $board)
{
$square = $board->getSquareByPos(1, 1);
$this->assertSame($board->getSquareByKey('a1'), $square);
}
/**
* Move a piece on the board
* Performs several validation before applying the move
*
* @param mixed $notation Valid algebraic notation (e.g. "a2 a4")
* @return string PGN notation of the move
*/
public function move($notation, array $options = array())
{
list($fromKey, $toKey) = explode(' ', $notation);
if (!$fromKey || !$toKey) {
throw new \InvalidArgumentException(sprintf('Manipulator:move game:%s, Invalid internal move notation "%s"', $this->game->getId(), $notation));
}
if (!($from = $this->board->getSquareByKey($fromKey))) {
throw new \InvalidArgumentException(sprintf('Manipulator:move game:%s, Square ' . $fromKey . ' does not exist', $this->game->getId()));
}
if (!($to = $this->board->getSquareByKey($toKey))) {
throw new \InvalidArgumentException(sprintf('Manipulator:move game:%s, Square ' . $toKey . ' does not exist', $this->game->getId()));
}
if (!($piece = $from->getPiece())) {
throw new \InvalidArgumentException(sprintf('Manipulator:move game:%s, No piece on ' . $from, $this->game->getId()));
}
$player = $piece->getPlayer();
if (!$player->isMyTurn()) {
throw new \LogicException(sprintf('Manipulator:move game:%s, Can not play ' . $from . ' ' . $to . ' - Not ' . $piece->getColor() . ' player turn', $this->game->getId()));
}
$pieceClass = $piece->getClass();
$isPlayerKingAttacked = $this->analyser->isKingAttacked($player);
$playerPossibleMoves = $this->analyser->getPlayerPossibleMoves($player, $isPlayerKingAttacked);
$possibleMoves = isset($playerPossibleMoves[$fromKey]) ? $playerPossibleMoves[$fromKey] : false;
if (!$possibleMoves) {
throw new \LogicException(sprintf('Manipulator:move game:%s, %s can not move', $this->game->getId(), $piece));
}
if (!in_array($toKey, $possibleMoves)) {
throw new \LogicException(sprintf('Manipulator:move game:%s, %s can not go to ' . $to . ' (' . implode(',', $possibleMoves) . ')', $this->game->getId(), $piece));
}
// killed?
$killed = $to->getPiece();
// castling?
$isCastling = false;
if ('King' === $pieceClass) {
// standard castling
if (1 < abs($from->getX() - $to->getX())) {
$isCastling = true;
} elseif ($killed && $killed->getColor() === $piece->getColor()) {
$isCastling = true;
$killed = null;
}
}
// promotion?
if ('Pawn' === $pieceClass && $to->getY() === ($player->isWhite() ? 8 : 1)) {
$isPromotion = true;
$promotionClass = isset($options['promotion']) ? ucfirst($options['promotion']) : 'Queen';
if (!in_array($promotionClass, array('Queen', 'Knight', 'Bishop', 'Rook'))) {
throw new \InvalidArgumentException(sprintf('Manipulator:move game:%s, Bad promotion class: ' . $promotionClass, $this->game->getId()));
}
$options['promotion'] = $promotionClass;
} else {
$isPromotion = false;
}
// enpassant?
$isEnPassant = 'Pawn' === $pieceClass && $to->getX() !== $from->getX() && !$killed;
$pgnDumper = new PgnDumper();
$pgn = $pgnDumper->dumpMove($this->game, $piece, $from, $to, $playerPossibleMoves, $killed, $isCastling, $isPromotion, $isEnPassant, $options);
$this->stack->addEvent(array('type' => 'move', 'from' => $from->getKey(), 'to' => $to->getKey(), 'color' => $piece->getColor()));
if ($isCastling) {
$this->castle($piece, $to);
} else {
if ($killed) {
$killed->setIsDead(true);
$this->board->remove($killed);
}
$this->board->move($piece, $to->getX(), $to->getY());
if (null === $piece->getFirstMove()) {
$piece->setFirstMove($this->game->getTurns());
}
}
if ($isPromotion) {
$this->promotion($piece, $options['promotion']);
}
if ($isEnPassant) {
$this->enpassant($piece, $to);
}
// When an irreversible event happens,
// we can safely clear the game position hashes
if ($killed || $isPromotion || $isCastling || 'Pawn' === $pieceClass) {
$this->game->clearPositionHashes();
}
return $pgn;
}