void Game::configure(GameConfiguration config) {
if (!config.isValid()) {
throw std::invalid_argument("Invalid configuration: " + config.str());
}
config.clean();
reset();
curTurn = config.getTurn();
FOR_POSITION_64(pos) {
setPieceAt(pos, config.getPieceAt(pos));
if (config.getPieceAt(pos) != Piece::EMPTY()) {
toggleBit(config.getOwnerAt(pos), pos, config.getPieceAt(pos));
}
}
cur = Game_UndoData();
cur.halfMoveClock = config.getHalfMoveClock();
fullMoveCount = config.getMoveNumber();
cur.check = posAttackedBy(getKingPosition(getTurn()), !getTurn());
cur.hash = Game_Hash(config);
integrityCheck();
}
/*
* Get all possible moves for the given square.
* If the square is illegal or vacant, empty list is returned.
* Otherwise we query the square to find out which player occupies the square, and returns the possible moves for that
* player's piece.
* Input:
* board ~ The game board.
* x, y ~ The position on board to search for moves.
*/
LinkedList* getMovesForSquare(char board[BOARD_SIZE][BOARD_SIZE], int x, int y)
{
LinkedList* possibleMoves = createList(deleteMove); // <-- This list contains the results of moves available.
// Note we change this list in the following service functions.
if (g_memError)
return NULL;
if (!isSquareOnBoard(x, y) || isSquareVacant(board, x, y))
return possibleMoves;
bool isMovesForBlackPlayer = isSquareOccupiedByBlackPlayer(board, x, y);
Position kingPos = getKingPosition(board, isMovesForBlackPlayer); // Position of current player's king
Position startPos;
startPos.x = x;
startPos.y = y;
getPieceMove(board, possibleMoves, isMovesForBlackPlayer, &startPos, &kingPos);
if (g_memError)
{
deleteList(possibleMoves);
return NULL;
}
return possibleMoves;
}
/*
* Iterates the board and returns a list of moves the player can make with each piece
* Input:
* board ~ The game board.
* isMovesForBlackPlayer ~ True if the function returns moves for the black player.
* False if the function returns moves for the white player.
*/
LinkedList* getMoves(char board[BOARD_SIZE][BOARD_SIZE], bool isMovesForBlackPlayer)
{
LinkedList* possibleMoves = createList(deleteMove); // <-- This list contains the results of moves available.
// Note we change this list in the following service functions.
if (g_memError)
return NULL;
Position kingPos = getKingPosition(board, isMovesForBlackPlayer); // Position of current player's king
int i, j; // i = row, j = column
for (i = 0; i < BOARD_SIZE; i++)
{
for (j = 0; j < BOARD_SIZE; j++)
{
Position startPos;
startPos.x = i;
startPos.y = j;
getPieceMove(board, possibleMoves, isMovesForBlackPlayer, &startPos, &kingPos);
if (g_memError)
{
deleteList(possibleMoves);
return NULL;
}
}
}
return possibleMoves;
}
/*
* Returns either whether the black player (isTestForBlackPlayer == true) is in check,
* or the white player (isTestForBlackPlayer == false) is in check.
*/
bool isCheck(char board[BOARD_SIZE][BOARD_SIZE], bool isTestForBlackPlayer)
{
Position kingPos = getKingPosition(board, isTestForBlackPlayer);
return isKingUnderCheck(board, isTestForBlackPlayer, &kingPos);
}