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DroidFish: Updated stockfish engine to version DD.

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This commit is contained in:
Peter Osterlund
2013-11-30 19:12:34 +00:00
parent ef2ea196b4
commit 43e92323e4
31 changed files with 940 additions and 1245 deletions
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35
DroidFish/jni/stockfish/movegen.cpp
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@@ -56,13 +56,13 @@ namespace {
// Because we generate only legal castling moves we need to verify that
// when moving the castling rook we do not discover some hidden checker.
// For instance an enemy queen in SQ_A1 when castling rook is in SQ_B1.
if (Chess960 && (pos.attackers_to(kto, pos.pieces() ^ rfrom) & enemies))
if (Chess960 && (attacks_bb<ROOK>(kto, pos.pieces() ^ rfrom) & pos.pieces(~us, ROOK, QUEEN)))
return mlist;
(mlist++)->move = make<CASTLE>(kfrom, rfrom);
if (Checks && !pos.move_gives_check((mlist - 1)->move, CheckInfo(pos)))
mlist--;
if (Checks && !pos.gives_check((mlist - 1)->move, CheckInfo(pos)))
--mlist;
return mlist;
}
@@ -359,31 +359,14 @@ ExtMove* generate<EVASIONS>(const Position& pos, ExtMove* mlist) {
// evasions so to skip known illegal moves avoiding useless legality check later.
do
{
checkersCnt++;
++checkersCnt;
checksq = pop_lsb(&b);
assert(color_of(pos.piece_on(checksq)) == ~us);
switch (type_of(pos.piece_on(checksq)))
{
case BISHOP: sliderAttacks |= PseudoAttacks[BISHOP][checksq]; break;
case ROOK: sliderAttacks |= PseudoAttacks[ROOK][checksq]; break;
case QUEEN:
// If queen and king are far or not on a diagonal line we can safely
// remove all the squares attacked in the other direction becuase are
// not reachable by the king anyway.
if (between_bb(ksq, checksq) || !(PseudoAttacks[BISHOP][checksq] & ksq))
sliderAttacks |= PseudoAttacks[QUEEN][checksq];
if (type_of(pos.piece_on(checksq)) > KNIGHT) // A slider
sliderAttacks |= LineBB[checksq][ksq] ^ checksq;
// Otherwise we need to use real rook attacks to check if king is safe
// to move in the other direction. For example: king in B2, queen in A1
// a knight in B1, and we can safely move to C1.
else
sliderAttacks |= PseudoAttacks[BISHOP][checksq] | pos.attacks_from<ROOK>(checksq);
default:
break;
}
} while (b);
// Generate evasions for king, capture and non capture moves
@@ -407,17 +390,17 @@ template<>
ExtMove* generate<LEGAL>(const Position& pos, ExtMove* mlist) {
ExtMove *end, *cur = mlist;
Bitboard pinned = pos.pinned_pieces();
Bitboard pinned = pos.pinned_pieces(pos.side_to_move());
Square ksq = pos.king_square(pos.side_to_move());
end = pos.checkers() ? generate<EVASIONS>(pos, mlist)
: generate<NON_EVASIONS>(pos, mlist);
while (cur != end)
if ( (pinned || from_sq(cur->move) == ksq || type_of(cur->move) == ENPASSANT)
&& !pos.pl_move_is_legal(cur->move, pinned))
&& !pos.legal(cur->move, pinned))
cur->move = (--end)->move;
else
cur++;
++cur;
return end;
}