protected function isCastleKingSide(Piece $king, Square $to)
{
if ($to->getPiece()) {
return $to->getX() > $king->getX();
} else {
return 7 === $to->getX();
}
}
/**
* Handle castling
**/
protected function castling(King $king, Square $to)
{
if (7 === $to->getX()) {
$rookSquare = $to->getSquareByRelativePos(1, 0);
$newRookSquare = $to->getSquareByRelativePos(-1, 0);
} else {
$rookSquare = $to->getSquareByRelativePos(-2, 0);
$newRookSquare = $to->getSquareByRelativePos(1, 0);
}
$rook = $rookSquare->getPiece();
$this->board->move($rook, $newRookSquare->getX(), $newRookSquare->getY());
$rook->setFirstMove($this->game->getTurns());
if ($this->stack) {
$this->stack->add(array('type' => 'castling', 'from' => $rookSquare->getKey(), 'to' => $newRookSquare->getKey()));
}
}
