void Start()
{
if (gameModeIndexSet)
{
gameMode = (GameMode)gameModeIndex;
}
if (gameMode == GameMode.Regular)
{
// GetComponent<Clock>().StartClock();
}
Board.SetPositionFromFen(Definitions.gameStartFen, true);
ZobristKey.Init();
Evaluation.Init();
if (regenerateOpeningBook)
{
OpeningBookGenerator.GenerateBook();
}
if (useOpeningBook)
{
OpeningBookReader.Init();
}
playerManager = GetComponent <MoveManager> ();
playerManager.CreatePlayers();
Board.SetPositionFromFen(Definitions.gameStartFen, true);
}
/// Sets the board position from a given fen string
/// Note that this will clear the board history
public static void SetPositionFromFen(string fen, bool updateBoardUI = true)
{
Init();
threefoldRepCheck.Clear();
halfmoveCountSinceLastPawnMoveOrCap = 0;
boardArray = new int[128];
boardColourArray = new int[128];
for (int i = 0; i <= 127; i++) // clear colour array (all values to -1)
{
boardColourArray[i] = -1;
}
ushort initialGameState = 0;
string[] fenSections = fen.Split(' ');
string pieceChars = "rnbqkpRNBQKP";
string pieceFen = fenSections [0];
int boardX = 0;
int boardY = 7;
for (int i = 0; i < pieceFen.Length; i++)
{
char key = pieceFen [i];
if (pieceChars.Contains(key.ToString()))
{
int squareIndex64 = boardY * 8 + boardX;
int squareIndex128 = Convert64to128(squareIndex64);
bool white = char.IsUpper(key);
int pieceCode = ColourCode(white);
switch (key.ToString().ToUpper().ToCharArray()[0])
{
case 'R':
pieceCode |= rookCode;
break;
case 'N':
pieceCode |= knightCode;
break;
case 'B':
pieceCode |= bishopCode;
break;
case 'Q':
pieceCode |= queenCode;
break;
case 'K':
pieceCode |= kingCode;
if (white)
{
whiteKingIndex = squareIndex128;
}
else
{
blackKingIndex = squareIndex128;
}
break;
case 'P':
pieceCode |= pawnCode;
break;
}
UpdatePieceCount(pieceCode, 1);
boardArray[squareIndex128] = pieceCode;
SetColourBoard(squareIndex128, squareIndex128, pieceCode & 1);
boardX++;
}
else if (key == '/')
{
boardX = 0;
boardY--;
}
else
{
int skipCount;
if (int.TryParse(key + "", out skipCount))
{
boardX += skipCount;
}
}
}
// Game state
string sideToMove = fenSections [1];
string castlingRights = fenSections [2];
string enPassantCaptureSquare = fenSections [3];
halfmoveCount = 0;
if (fenSections.Length > 4)
{
int.TryParse(fenSections[4], out halfmoveCount);
}
// string fullMoveNumber = fenSections [5];
// Set side to move (bit 1)
if (sideToMove == "w")
{
initialGameState += 1;
}
// Set castling rights (bits 2,3,4,5)
for (int i = 0; i < castlingRights.Length; i++)
{
switch (castlingRights [i])
{
case 'K':
initialGameState += 1 << 1;
break;
case 'Q':
initialGameState += 1 << 2;
break;
case 'k':
initialGameState += 1 << 3;
break;
case 'q':
initialGameState += 1 << 4;
break;
}
}
// En passant capture file (bits 6,7,8,9)
if (enPassantCaptureSquare [0] != '-')
{
initialGameState += (ushort)(Definitions.fileNames.IndexOf(enPassantCaptureSquare [0]) << 5);
}
gameStateHistory.Clear();
gameStateHistory.Push(initialGameState);
zobristKey = ZobristKey.GetZobristKey();
if (updateBoardUI)
{
UpdatePhysicalBoard();
}
}
