示例#1
0
 /**
  * {@inheritdoc}
  */
 public function possibleCapturesBy($color, BoardInterface $board)
 {
     $moves = [];
     $criteria = ['piece_color' => $color];
     foreach ($board->getSquaresBy($criteria) as $square) {
         $moves = array_merge($moves, $this->possibleCapturesFrom($square->getPosition(), $board));
     }
     return $moves;
 }
示例#2
0
 /**
  * {@inheritdoc}
  */
 public function __construct(PlayerInterface $whitePlayer, PlayerInterface $blackPlayer, BoardInterface $board, $id = null)
 {
     if ($whitePlayer->getColor() !== Color::WHITE) {
         throw new \LogicException("Given white player's PlayerInterface should have a white color");
     }
     if ($blackPlayer->getColor() !== Color::BLACK) {
         throw new \LogicException("Given black player's PlayerInterface should have a black color");
     }
     $board->setGame($this);
     $this->whitePlayer = $whitePlayer;
     $this->blackPlayer = $blackPlayer;
     $this->board = $board;
     $this->id = $id ?: uniqid();
     $this->states = new ArrayCollection();
 }
示例#3
0
 /**
  * @param BoardInterface $board
  * @param bool           $flipped
  *
  * @return string
  */
 public static function toAscii(BoardInterface $board, $flipped = false)
 {
     $squaresByRow = $board->getIndexedSquares('row');
     $ascii = '';
     if ($flipped !== true) {
         $squaresByRow = array_reverse($squaresByRow, true);
     }
     $previousRow = null;
     foreach ($squaresByRow as $row => $squares) {
         if ($previousRow !== $row) {
             if ($previousRow !== null) {
                 $ascii .= "\n";
             }
             $ascii .= sprintf('%d ║', $row);
         }
         /** @var Square[] $squares */
         foreach ($squares as $square) {
             if (null !== ($piece = $square->getPiece())) {
                 $ascii .= PieceDecorator::toAscii($piece);
             } else {
                 $ascii .= '…';
             }
             $ascii .= ' ';
         }
         $ascii = rtrim($ascii);
         $previousRow = $row;
     }
     $ascii .= "\n";
     $columnLabels = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'];
     $ascii .= '  ╚' . str_repeat('═', count($columnLabels) * 2 - 1) . "\n";
     $ascii .= '   ';
     foreach ($columnLabels as $columnLabel) {
         $ascii .= $columnLabel . ' ';
     }
     $ascii .= "\n";
     return $ascii;
 }
示例#4
0
 /**
  * @param int      $direction        The direction to step into
  * @param int      $jumps            The number of jumps to make in this direction
  * @param int|null $startingPosition
  * @param bool     $ignoreCapture
  *
  * @return int|null The expected position, or null if the move is not possible
  *
  * @throws \InvalidArgumentException
  */
 public function peek($direction, $jumps = 1, $startingPosition = null, $ignoreCapture = false, $requireAttack = false)
 {
     $newPosition = null;
     if ($startingPosition !== null) {
         $column = BoardHelper::getColumnFromPosition($startingPosition);
         $row = BoardHelper::getRowFromPosition($startingPosition);
     } else {
         $column = $this->getColumn();
         $row = $this->getRow();
     }
     switch ($direction) {
         case self::DIRECTION_FORWARD:
             if ($this->color === Color::WHITE) {
                 $newRow = $this->formatNumber($row + $jumps);
             } else {
                 $newRow = $this->formatNumber($row - $jumps);
             }
             if ($newRow !== null) {
                 $newPosition = intval($column . $newRow);
             }
             break;
         case self::DIRECTION_FORWARDRIGHT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column + $jumps);
                 $newRow = $this->formatNumber($row + $jumps);
             } else {
                 $newColumn = $this->formatNumber($column - $jumps);
                 $newRow = $this->formatNumber($row - $jumps);
             }
             if ($newColumn !== null && $newRow !== null) {
                 $newPosition = intval($newColumn . $newRow);
             }
             break;
         case self::DIRECTION_RIGHT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column + $jumps);
             } else {
                 $newColumn = $this->formatNumber($column - $jumps);
             }
             if ($newColumn !== null) {
                 $newPosition = intval($newColumn . $row);
             }
             break;
         case self::DIRECTION_BACKWARDRIGHT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column + $jumps);
                 $newRow = $this->formatNumber($row - $jumps);
             } else {
                 $newColumn = $this->formatNumber($column - $jumps);
                 $newRow = $this->formatNumber($row + $jumps);
             }
             if ($newColumn !== null && $newRow !== null) {
                 $newPosition = intval($newColumn . $newRow);
             }
             break;
         case self::DIRECTION_BACKWARD:
             if ($this->color === Color::WHITE) {
                 $newRow = $this->formatNumber($row - $jumps);
             } else {
                 $newRow = $this->formatNumber($row + $jumps);
             }
             if ($newRow !== null) {
                 $newPosition = intval($column . $newRow);
             }
             break;
         case self::DIRECTION_BACKWARDLEFT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column - $jumps);
                 $newRow = $this->formatNumber($row - $jumps);
             } else {
                 $newColumn = $this->formatNumber($column + $jumps);
                 $newRow = $this->formatNumber($row + $jumps);
             }
             if ($newColumn !== null && $newRow !== null) {
                 $newPosition = intval($newColumn . $newRow);
             }
             break;
         case self::DIRECTION_LEFT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column - $jumps);
             } else {
                 $newColumn = $this->formatNumber($column + $jumps);
             }
             if ($newColumn !== null) {
                 $newPosition = intval($newColumn . $row);
             }
             break;
         case self::DIRECTION_FORWARDLEFT:
             if ($this->color === Color::WHITE) {
                 $newColumn = $this->formatNumber($column - $jumps);
                 $newRow = $this->formatNumber($row + $jumps);
             } else {
                 $newColumn = $this->formatNumber($column + $jumps);
                 $newRow = $this->formatNumber($row - $jumps);
             }
             if ($newColumn !== null && $newRow !== null) {
                 $newPosition = intval($newColumn . $newRow);
             }
             break;
         default:
             throw new \InvalidArgumentException(sprintf('Unknown direction to calculate: %s', $direction));
     }
     if ($ignoreCapture !== true && $newPosition !== null) {
         $toPiece = $this->board->getSquare($newPosition)->getPiece();
         if (null !== $toPiece) {
             if ($toPiece->getColor() === $this->getColor()) {
                 // own piece, can't capture
                 return null;
             }
         } elseif ($requireAttack === true) {
             return null;
         }
     }
     return $newPosition;
 }
示例#5
0
 /**
  * @param BoardInterface $board
  * @param int            $color
  *
  * @return int
  */
 public static function getKingPosition(BoardInterface $board, $color)
 {
     $kingSquares = $board->getSquaresBy(['piece_type' => PieceInterface::TYPE_KING, 'piece_color' => $color]);
     if (count($kingSquares) !== 1) {
         throw new \RuntimeException(sprintf('There should always be one king of a given color on the board, found %d', count($kingSquares)));
     }
     return reset($kingSquares)->getPosition();
 }
 /**
  * @param BoardInterface $board
  *
  * @return array
  */
 private function getExpectedBoardArray(BoardInterface $board)
 {
     $squares = [];
     foreach ($board->getSquares() as $square) {
         $squares[$square->getPosition()] = ['position' => $square->getPosition(), 'color' => $square->getColor(), 'piece' => $this->getExpectedPieceArray($square->getPiece())];
     }
     return ['squares' => $squares];
 }