/**
* 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();
}
public function __construct(Game $game, Stack $stack = null)
{
$autodraw = new Autodraw();
$stack = $stack ?: new Stack();
$analyser = new Analyser($game->getBoard());
parent::__construct($game, $autodraw, $analyser, $stack);
}
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));
}
public function __construct(Game $game, Autodraw $autodraw, Analyser $analyser, Stack $stack)
{
$this->game = $game;
$this->board = $game->getBoard();
$this->autodraw = $autodraw;
$this->analyser = $analyser;
$this->stack = $stack;
}
public function createPiecesMinimal(Game $game)
{
$pieces = array();
$player = $game->getPlayer('white');
$pieces[] = new Piece(1, 2, 'Pawn');
$player->setPieces($pieces);
$player->getOpponent()->setPieces($this->mirrorPieces($pieces));
$game->setInitialFen(null);
}
/**
* Return the average available time per move
*
* @return float
**/
protected function calculateTimePerMove(Game $game)
{
if ($clock = $game->getClock()) {
$totalTime = $clock->getLimit() + $game->getFullmoveNumber() * $clock->getIncrement();
$timePerMove = $totalTime / $game->getFullmoveNumber();
} else {
$timePerMove = 60;
}
return $timePerMove;
}
public function move(Game $game, $level)
{
$analyser = new Analyser($game->getBoard());
$moveTree = $analyser->getPlayerPossibleMoves($game->getTurnPlayer());
// choose random piece
do {
$from = array_rand($moveTree);
} while (empty($moveTree[$from]));
// choose random move
$to = $moveTree[$from][array_rand($moveTree[$from])];
return $from . ' ' . $to;
}
protected function fewMaterial(Game $game)
{
$white = $game->getPlayer('white');
$black = $game->getPlayer('black');
$whiteNbPieces = $white->getNbAlivePieces();
$blackNbPieces = $black->getNbAlivePieces();
if (2 < $whiteNbPieces || 2 < $blackNbPieces) {
return false;
}
$whitePiece = $this->getLastPiece($white);
$blackPiece = $this->getLastPiece($black);
if ($this->canNotMate($white) && $this->canNotMate($black)) {
return true;
}
return false;
}
public function detectCheater(Game $game)
{
if ($game->getTurns() != $this->turns && $game->getTurns() != $this->turns + 1) {
return false;
}
if ($game->getInvited()->getIsAi()) {
return false;
}
// Detect client using internal AI
$similarGames = $this->gameRepository->findSimilar($game, new DateTime('-5 minutes'));
foreach ($similarGames as $similarGame) {
if ($similarGame->getInvited()->getIsAi()) {
return $game->getPlayer($similarGame->getInvited()->getColor());
}
}
return false;
}
protected function addMessage(Game $game, $author, $message)
{
$author = (string) $author;
$message = (string) $message;
if ('' === $message) {
throw new \InvalidArgumentException('Messenger: Can not add empty message');
}
if (mb_strlen($message) > 140) {
throw new \InvalidArgumentException('Messenger: message is too long');
}
if ($game->addRoomMessage($author, $message)) {
$sayEvent = array('type' => 'message', 'message' => array($author, $message));
foreach ($game->getPlayers() as $player) {
$player->addEventToStack($sayEvent);
}
}
}
public function start(Game $game)
{
$game->start();
if ($game->getInvited()->getIsAi()) {
return array();
}
$messages = array();
$messages[] = ucfirst($game->getCreator()->getColor()) . ' creates the game';
$messages[] = ucfirst($game->getInvited()->getColor()) . ' joins the game';
if ($game->hasClock()) {
$messages[] = 'Clock: ' . $game->getClock()->getName();
}
if ($game->getIsRated()) {
$messages[] = 'This game is rated';
}
return $messages;
}
public function renderGameFen(Game $game, User $user = null)
{
$player = $game->getPlayerByUserOrCreator($user);
$authUser = $this->container->get('security.context')->getToken()->getUser();
if ($authUser instanceof User && ($authPlayer = $game->getPlayerByUser($authUser))) {
$gameUrl = $this->getUrlGenerator()->generate('lichess_player', array('id' => $authPlayer->getFullId()));
} else {
$gameUrl = $this->getUrlGenerator()->generate('lichess_game', array('id' => $game->getId(), 'color' => $player->getColor()));
}
return sprintf('<a href="%s" title="%s" class="mini_board parse_fen" data-color="%s" data-fen="%s"></a>', $gameUrl, $this->getTranslator()->trans('View in full size'), $player->getColor(), Forsyth::export($game));
}
private function encodeLobbyEntry(Game $game)
{
$entry = array();
foreach ($game->getPlayers() as $player) {
$entry[] = $player->hasUser() ? $player->getUsername() : null;
$entry[] = $player->getUsernameWithElo();
}
return implode("\$", $entry);
}
public function updateElo(User $user, $elo, Game $game)
{
$user->setElo($elo);
$ts = date_create()->getTimestamp();
$this->historyRepository->findOneByUserOrCreate($user)->addGame($ts, $elo, $game->getId());
}
public function findSimilar(Game $game, \DateTime $since)
{
return $this->createQueryBuilder()->field('id')->notEqual($game->getId())->field('updatedAt')->gt(new \MongoDate($since->getTimestamp()))->field('status')->equals(Game::STARTED)->field('turns')->equals($game->getTurns())->field('pgnMoves')->equals($game->getPgnMoves())->hint(array('updatedAt' => -1))->getQuery()->execute();
}
protected function getPgnResult(Game $game)
{
if ($game->getIsFinished()) {
if ($game->getPlayer('white')->getIsWinner()) {
return '1-0';
} elseif ($game->getPlayer('black')->getIsWinner()) {
return '0-1';
}
return '1/2-1/2';
}
return '*';
}
public function create(Game $game, Stack $stack = null)
{
$class = $this->class;
$stack = $stack ?: new Stack();
return new $class($game, $this->autodraw, $this->analyserFactory->create($game->getBoard()), $stack);
}
protected function win(Game $game, $color = 'white')
{
$game->setStatus(Game::MATE);
$game->setWinner($game->getPlayer($color));
$this->finisher->finish($game);
}
/**
* Create a game from a visual block notation like:
r bqkb r
ppp ppp
p n n
p
B P
N
PPPP PPP
RNBQK R
*/
public function createGameFromVisualBlock($data)
{
$data = $this->fixVisualBlock($data);
$game = new Game();
$players = array();
foreach (array('white', 'black') as $color) {
$game->addPlayer(new Player($color));
}
$game->setCreator($game->getPlayer('white'));
foreach (explode("\n", $data) as $_y => $line) {
$y = 8 - $_y;
for ($x = 1; $x < 9; $x++) {
$byte = $line[$x - 1];
if (' ' === $byte) {
continue;
}
$color = ctype_lower($byte) ? 'black' : 'white';
$player = $game->getPlayer($color);
switch (strtolower($byte)) {
case 'p':
$class = 'Pawn';
break;
case 'r':
$class = 'Rook';
break;
case 'n':
$class = 'Knight';
break;
case 'b':
$class = 'Bishop';
break;
case 'q':
$class = 'Queen';
break;
case 'k':
$class = 'King';
break;
}
$player->addPiece(new Piece($x, $y, $class));
}
}
return $game;
}
public function getVariant()
{
$variantNames = Game::getVariantNames();
return ucfirst($variantNames[$this->config['variant']]);
}
protected function createGame()
{
$game = new Game();
$game->addPlayer(new Player('white'));
$game->addPlayer(new Player('black'));
$game->setCreatorColor('white');
$positionGenerator = new StandardPositionGenerator();
$positionGenerator->createPiecesMinimal($game);
return $game;
}
public function getIsMyTurn()
{
return $this->game->getTurns() % 2 xor 'white' === $this->color;
}
public static function diffToMove(Game $game, $forsyth)
{
$moves = array('from' => array(), 'to' => array());
$x = 1;
$y = 8;
$board = $game->getBoard();
$forsyth = str_replace('/', '', preg_replace('#\\s*([\\w\\d/]+)\\s.+#i', '$1', $forsyth));
for ($itForsyth = 0, $forsythLen = strlen($forsyth); $itForsyth < $forsythLen; $itForsyth++) {
$letter = $forsyth[$itForsyth];
$key = Board::posToKey($x, $y);
if (is_numeric($letter)) {
for ($x = $x, $max = $x + intval($letter); $x < $max; $x++) {
$_key = Board::posToKey($x, $y);
if (!$board->getSquareByKey($_key)->isEmpty()) {
$moves['from'][] = $_key;
}
}
} else {
$color = ctype_lower($letter) ? 'black' : 'white';
switch (strtolower($letter)) {
case 'p':
$class = 'Pawn';
break;
case 'r':
$class = 'Rook';
break;
case 'n':
$class = 'Knight';
break;
case 'b':
$class = 'Bishop';
break;
case 'q':
$class = 'Queen';
break;
case 'k':
$class = 'King';
break;
}
if ($piece = $board->getPieceByKey($key)) {
if ($class != $piece->getClass() || $color !== $piece->getColor()) {
$moves['to'][] = $key;
}
} else {
$moves['to'][] = $key;
}
++$x;
}
if ($x > 8) {
$x = 1;
--$y;
}
}
if (empty($moves['from'])) {
return null;
} elseif (1 === count($moves['from']) && 1 === count($moves['to'])) {
$from = $moves['from'][0];
$to = $moves['to'][0];
} elseif (2 === count($moves['from']) && 2 === count($moves['to'])) {
if ($board->getPieceByKey($moves['from'][0])->isClass('King')) {
$from = $moves['from'][0];
} else {
$from = $moves['from'][1];
}
if (in_array($board->getSquareByKey($moves['to'][0])->getX(), array(3, 7))) {
$to = $moves['to'][0];
} else {
$to = $moves['to'][1];
}
} elseif (2 === count($moves['from']) && 1 === count($moves['to']) && $board->getPieceByKey($moves['from'][0])->isClass('Pawn') && $board->getPieceByKey($moves['from'][1])->isClass('Pawn') && !$board->hasPieceByKey($moves['to'][0])) {
if ($moves['from'][0][0] === $moves['to'][0][0]) {
$from = $moves['from'][1];
} else {
$from = $moves['from'][0];
}
$to = $moves['to'][0];
} else {
throw new \RuntimeException(sprintf('Forsyth:diffToMove game:%s, variant:%s, moves: %s, forsyth:%s', $game->getId(), $game->getVariantName(), str_replace("\n", " ", var_export($moves, true)), $forsyth));
}
return $from . ' ' . $to;
}
protected function updateElo(Game $game)
{
// Game can be aborted
if (!$game->getIsFinished()) {
return;
}
if (!$game->getIsRated()) {
return;
}
// Don't rate games with less than 2 moves
if ($game->getTurns() < 2) {
return;
}
$white = $game->getPlayer('white');
$black = $game->getPlayer('black');
$whiteUser = $white->getUser();
$blackUser = $black->getUser();
// Don't rate games when one ore more player is not registered
if (!$whiteUser || !$blackUser) {
return;
}
if ($winner = $game->getWinner()) {
$win = $winner->isWhite() ? -1 : 1;
} else {
$win = 0;
}
list($whiteElo, $blackElo) = $this->calculator->calculate($white->getElo(), $black->getElo(), $win);
$white->setEloDiff($whiteEloDiff = $whiteElo - $white->getElo());
$black->setEloDiff($blackEloDiff = $blackElo - $black->getElo());
$this->eloUpdater->updateElo($whiteUser, $whiteUser->getElo() + $whiteEloDiff, $game);
$this->eloUpdater->updateElo($blackUser, $blackUser->getElo() + $blackEloDiff, $game);
$this->logger->notice($game, sprintf('Elo exchanged: %s', $whiteEloDiff));
}
public function findByGame(Game $game)
{
return $this->createQueryBuilder()->field('game.$id')->equals($game->getId())->getQuery()->execute();
}
public function expandGame(Game $game)
{
return sprintf('game(%s,%s,%s,%s,%d,%s)', $game->getVariantName(), $game->getClockName(), $game->getIsRated() ? 'rated' : 'casual', $game->getIsPlayable() ? 'playable' : $game->getStatusMessage(), $game->getTurns(), $this->generator->generate('lichess_game', array('id' => $game->getId()), true));
}
public function isMyTurn()
{
return $this->game->getTurns() % 2 xor 'white' === $this->c;
}
/**
* @depends testGameCreation
*/
public function testFilterNotClass(Entities\Game $game)
{
$piece1 = $game->getBoard()->getPieceByPos(1, 1);
$piece2 = $game->getBoard()->getPieceByPos(2, 1);
$this->assertSame(array($piece2), PieceFilter::filterNotClass(array($piece1, $piece2), 'Rook'));
}
/**
* @depends testGameCreationStandard
*/
public function testPlayerQueens(Document\Game $game)
{
$player = $game->getPlayer('white');
$queens = $player->getPiecesByClass('Queen');
$this->assertTrue($queens[0] instanceof Document\Piece\Queen);
$this->assertEquals(1, $queens[0]->getY());
$this->assertEquals(1, count($queens));
$this->assertSame($player, $queens[0]->getPlayer());
$this->assertTrue($queens[0]->isClass('Queen'));
$this->assertFalse($queens[0]->getIsDead());
}
