public void Initialize()
{
g_hash = RAND_32();
for (int n = 0; n < undoStack.Length; n++)
{
undoStack[n] = new CUndo();
}
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
arrField[y * 8 + x] = (y + 4) * 16 + x + 4;
}
}
for (int n = 0; n < 256; n++)
{
boardCheck[n] = 0;
boardCastle[n] = 15;
g_board[n] = 0;
for (int p = 0; p < 16; p++)
{
g_hashBoard[n, p] = RAND_32();
}
}
int[] arrCastleI = { 68, 72, 75, 180, 184, 187 };
int[] arrCasteleV = { 7, 3, 11, 13, 12, 14 };
int[] arrCheckI = { 71, 72, 73, 183, 184, 185 };
int[] arrCheckV = { colorBlack | moveflagCastleQueen, colorBlack | maskCastle, colorBlack | moveflagCastleKing, colorWhite | moveflagCastleQueen, colorWhite | maskCastle, colorWhite | moveflagCastleKing };
for (int n = 0; n < 6; n++)
{
boardCastle[arrCastleI[n]] = arrCasteleV[n];
boardCheck[arrCheckI[n]] = arrCheckV[n];
}
}
public void UnmakeMove(int move)
{
int fr = move & 0xFF;
int to = (move >> 8) & 0xFF;
int flags = move & 0xFF0000;
int capi = to;
CUndo undo = undoStack[--undoIndex];
g_passing = undo.passing;
g_castleRights = undo.castle;
g_move50 = undo.move50;
g_lastCastle = undo.lastCastle;
g_hash = undo.hash;
int captured = undo.captured;
if ((flags & moveflagCastleKing) > 0)
{
g_board[to + 1] = g_board[to - 1];
g_board[to - 1] = colorEmpty;
}
else if ((flags & moveflagCastleQueen) > 0)
{
g_board[to - 2] = g_board[to + 1];
g_board[to + 1] = colorEmpty;
}
if ((flags & moveflagPromotion) > 0)
{
int piece = (g_board[to] & (~0x7)) | piecePawn;
g_board[fr] = piece;
}
else
{
g_board[fr] = g_board[to];
}
if ((flags & moveflagPassing) > 0)
{
capi = whiteTurn ? to - 16 : to + 16;
g_board[to] = colorEmpty;
}
g_board[capi] = captured;
whiteTurn ^= true;
g_moveNumber--;
}
public void MakeMove(int emo)
{
CUndo undo = undoStack[undoIndex++];
undo.hash = g_hash;
undo.passing = g_passing;
undo.castle = g_castleRights;
undo.move50 = g_move50;
undo.lastCastle = g_lastCastle;
int fr = emo & 0xff;
int to = (emo >> 8) & 0xff;
int flags = emo & 0xFF0000;
int piecefr = g_board[fr];
int piece = piecefr & 0xf;
int captured = g_board[to];
g_lastCastle = (emo & maskCastle) | (piecefr & maskColor);
if ((flags & moveflagCastleKing) > 0)
{
g_board[to - 1] = g_board[to + 1];
g_board[to + 1] = colorEmpty;
}
else if ((flags & moveflagCastleQueen) > 0)
{
g_board[to + 1] = g_board[to - 2];
g_board[to - 2] = colorEmpty;
}
else if ((flags & moveflagPassing) > 0)
{
int capi = whiteTurn ? to + 16 : to - 16;
captured = g_board[capi];
g_board[capi] = colorEmpty;
}
undo.captured = captured;
g_hash ^= g_hashBoard[fr, piece];
g_passing = 0;
if ((captured & 0xF) > 0)
{
g_move50 = 0;
}
else if ((piece & 7) == piecePawn)
{
if (to == (fr + 32))
{
g_passing = (fr + 16);
}
if (to == (fr - 32))
{
g_passing = (fr - 16);
}
g_move50 = 0;
}
else
{
g_move50++;
}
if ((flags & moveflagPromotion) > 0)
{
int newPiece = piecefr & (~0x7);
if ((flags & moveflagPromoteKnight) > 0)
{
newPiece |= pieceKnight;
}
else if ((flags & moveflagPromoteQueen) > 0)
{
newPiece |= pieceQueen;
}
else if ((flags & moveflagPromoteBishop) > 0)
{
newPiece |= pieceBishop;
}
else
{
newPiece |= pieceRook;
}
g_board[to] = newPiece;
g_hash ^= g_hashBoard[to, newPiece & 0xf];
}
else
{
g_board[to] = g_board[fr];
g_hash ^= g_hashBoard[to, piece];
}
g_board[fr] = colorEmpty;
g_castleRights &= boardCastle[fr] & boardCastle[to];
whiteTurn ^= true;
g_moveNumber++;
}