public function createPieces(Game $game)
{
$pieces = array();
$player = $game->getPlayer('white');
// Bishop on black square
$file = 2 * mt_rand(1, 4) - 1;
$pieces[$file] = $this->createPiece('Bishop', $file, 1);
// Bishop on white square
$file = 2 * mt_rand(1, 4);
$pieces[$file] = $this->createPiece('Bishop', $file, 1);
// Queen and Knights
foreach (array(6 => 'Queen', 5 => 'Knight', 4 => 'Knight') as $rand => $class) {
$file = $this->getEmptyFile($pieces, mt_rand(1, $rand));
$pieces[$file] = $this->createPiece($class, $file, 1);
}
// Rooks and King
foreach (array('Rook', 'King', 'Rook') as $class) {
$file = $this->getEmptyFile($pieces, 1);
$pieces[$file] = $this->createPiece($class, $file, 1);
}
// Pawns
for ($it = 1; $it <= 8; $it++) {
$pieces[] = $this->createPiece('Pawn', $it, 2);
}
$pieces = array_values($pieces);
$player->setPieces($pieces);
$player->getOpponent()->setPieces($this->mirrorPieces($pieces));
$game->ensureDependencies();
$game->setInitialFen(Forsyth::export($game));
}
/**
* Create and position pieces of the game for the forsyth string
*
* @param Game $game
* @param string $forsyth
* @return Game $game
*/
public static function import(Game $game, $forsyth)
{
static $classes = array('p' => 'Pawn', 'r' => 'Rook', 'n' => 'Knight', 'b' => 'Bishop', 'q' => 'Queen', 'k' => 'King');
$x = 1;
$y = 8;
$board = $game->getBoard();
$forsyth = str_replace('/', '', preg_replace('#\\s*([\\w\\d/]+)\\s.+#i', '$1', $forsyth));
$pieces = array('white' => array(), 'black' => array());
for ($itForsyth = 0, $forsythLen = strlen($forsyth); $itForsyth < $forsythLen; $itForsyth++) {
$letter = $forsyth[$itForsyth];
if (is_numeric($letter)) {
$x += intval($letter);
} else {
$color = ctype_lower($letter) ? 'black' : 'white';
$pieces[$color][] = new Piece($x, $y, $classes[strtolower($letter)]);
++$x;
}
if ($x > 8) {
$x = 1;
--$y;
}
}
foreach ($game->getPlayers() as $player) {
$player->setPieces($pieces[$player->getColor()]);
}
$game->ensureDependencies();
}