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Improve mobility performance by bitboard 

And fix mobilityDiff value is wrong when moving.
This commit is contained in:
Calcitem 2021-06-14 21:26:11 +08:00
parent c0f92c2dcd
commit d719c70c5a
1 changed files with 34 additions and 49 deletions
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75
src/position.cpp
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@ -719,28 +719,26 @@ bool Position::put_piece(Square s, bool updateRecord)
const Piece pc = board[currentSquare];
board[s] = pc;
update_key(s);
revert_key(currentSquare);
updateMobility(MOVETYPE_PLACE, s);
board[currentSquare] = NO_PIECE;
updateMobility(MOVETYPE_REMOVE, currentSquare);
CLEAR_BIT(byTypeBB[ALL_PIECES], currentSquare);
CLEAR_BIT(byTypeBB[type_of(pc)], currentSquare);
CLEAR_BIT(byColorBB[color_of(pc)], currentSquare);
updateMobility(MOVETYPE_REMOVE, currentSquare);
SET_BIT(byTypeBB[ALL_PIECES], s);
SET_BIT(byTypeBB[type_of(pc)], s);
SET_BIT(byColorBB[color_of(pc)], s);
updateMobility(MOVETYPE_PLACE, s);
board[s] = pc;
update_key(s);
revert_key(currentSquare);
board[currentSquare] = NO_PIECE;
currentSquare = s;
const int n = mills_count(currentSquare);
if (n == 0
@ -792,8 +790,6 @@ bool Position::remove_piece(Square s, bool updateRecord)
revert_key(s);
updateMobility(MOVETYPE_REMOVE, s);
if (rule.hasBannedLocations && phase == Phase::placing) {
// Remove and put ban
Piece pc = board[s];
@ -801,6 +797,8 @@ bool Position::remove_piece(Square s, bool updateRecord)
CLEAR_BIT(byTypeBB[type_of(pc)], s); // TODO
CLEAR_BIT(byColorBB[color_of(pc)], s);
updateMobility(MOVETYPE_REMOVE, s);
pc = board[s] = BAN_STONE;
update_key(s);
@ -813,6 +811,8 @@ bool Position::remove_piece(Square s, bool updateRecord)
CLEAR_BIT(byTypeBB[type_of(pc)], s);
CLEAR_BIT(byColorBB[color_of(pc)], s);
updateMobility(MOVETYPE_REMOVE, s);
board[s] = NO_PIECE;
}
@ -1356,45 +1356,30 @@ void Position::reset_bb()
void Position::updateMobility(MoveType mt, Square s)
{
Bitboard adjacentWhiteBB = byColorBB[WHITE] & MoveList<LEGAL>::adjacentSquaresBB[s];
Bitboard adjacentBlackBB = byColorBB[BLACK] & MoveList<LEGAL>::adjacentSquaresBB[s];
Bitboard adjacentNoColorBB = (~(byColorBB[BLACK] | byColorBB[WHITE])) & MoveList<LEGAL>::adjacentSquaresBB[s];
int adjacentWhiteBBCount = popcount(adjacentWhiteBB);
int adjacentBlackBBCount = popcount(adjacentBlackBB);
int adjacentNoColorBBCount = popcount(adjacentNoColorBB);
if (mt == MOVETYPE_PLACE) {
for (MoveDirection d = MD_BEGIN; d < MD_NB; ++d) {
auto adjacentSquare = static_cast<Square>(MoveList<LEGAL>::adjacentSquares[s][d]);
mobilityDiff -= adjacentWhiteBBCount;
mobilityDiff += adjacentBlackBBCount;
if (!adjacentSquare) {
break;;
}
if (board[adjacentSquare] & W_STONE) {
mobilityDiff--;
} else if (board[adjacentSquare] & B_STONE) {
mobilityDiff++;
} else {
if (side_to_move() == WHITE) {
mobilityDiff++;
mobilityDiff += adjacentNoColorBBCount;
} else {
mobilityDiff--;
}
}
mobilityDiff -= adjacentNoColorBBCount;
}
} else if (mt == MOVETYPE_REMOVE) {
for (MoveDirection d = MD_BEGIN; d < MD_NB; ++d) {
auto adjacentSquare = static_cast<Square>(MoveList<LEGAL>::adjacentSquares[s][d]);
mobilityDiff += adjacentWhiteBBCount;
mobilityDiff -= adjacentBlackBBCount;
if (!adjacentSquare) {
break;
}
if (board[adjacentSquare] & W_STONE) {
mobilityDiff++;
} else if (board[adjacentSquare] & B_STONE) {
mobilityDiff--;
if ( color_of(board[s]) == WHITE) {
mobilityDiff -= adjacentNoColorBBCount;
} else {
if (side_to_move() == WHITE) {
mobilityDiff++;
} else {
mobilityDiff--;
}
}
mobilityDiff += adjacentNoColorBBCount;
}
} else {
assert(0);