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Let zobrist keys to be compatible with Glaurung 1

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Some changes to the zobrist keys, to make them identical
to those used by Glaurung 1.

The only purpose is to make it possible for both programs
to use the same opening book.

Merged from Glaurung current development snapshot.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-03-24 10:40:22 +01:00
parent 0e835bd334
commit d3f99aea6b
1 changed files with 10 additions and 10 deletions
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20
src/position.cpp
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@@ -1960,26 +1960,26 @@ bool Position::has_mate_threat(Color c) {
void Position::init_zobrist() {
for (int i = 0; i < 2; i++)
for (int j = 0; j < 8; j++)
for (int k = 0; k < 64; k++)
zobrist[i][j][k] = Key(genrand_int64());
for(Piece p = WP; p <= BK; p++)
for(Square s = SQ_A1; s <= SQ_H8; s++)
zobrist[color_of_piece(p)][type_of_piece(p)][s] = genrand_int64();
for (int i = 0; i < 64; i++)
zobEp[i] = Key(genrand_int64());
zobEp[0] = 0ULL;
for(int i = 1; i < 64; i++)
zobEp[i] = genrand_int64();
for (int i = 0; i < 16; i++)
zobCastle[i] = genrand_int64();
for(int i = 15; i >= 0; i--)
zobCastle[(i&8) | (i&1) | ((i&2) << 1) | ((i&4) >> 1)] = genrand_int64();
zobSideToMove = genrand_int64();
for (int i = 0; i < 2; i++)
for (int j = 0; j < 8; j++)
for (int k = 0; k < 16; k++)
zobMaterial[i][j][k] = (k > 0)? Key(genrand_int64()) : Key(0LL);
zobMaterial[i][j][k] = (k > 0)? genrand_int64() : 0LL;
for (int i = 0; i < 16; i++)
zobMaterial[0][KING][i] = zobMaterial[1][KING][i] = Key(0ULL);
zobMaterial[0][KING][i] = zobMaterial[1][KING][i] = 0ULL;
}