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Simplify previous condition

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No functional change.
This commit is contained in:
Marco Costalba 2013-05-04 12:27:19 +02:00
parent 9fc77bc414
commit 0958e5c6d3
1 changed files with 6 additions and 6 deletions
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12
src/evaluate.cpp
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@ -642,17 +642,17 @@ Value do_evaluate(const Position& pos, Value& margin) {
score += RookHalfOpenFileBonus; score += RookHalfOpenFileBonus;
} }
// Penalize rooks which are trapped inside a king. Penalize more if
// king has lost right to castle.
if (mob > 6 || ei.pi->file_is_half_open(Us, f)) if (mob > 6 || ei.pi->file_is_half_open(Us, f))
continue; continue;
ksq = pos.king_square(Us); ksq = pos.king_square(Us);
bool left = file_of(ksq) < FILE_E;
if ( ((left && file_of(s) < file_of(ksq)) || (!left && file_of(s) > file_of(ksq))) // Penalize rooks which are trapped inside a king. Penalize more if
&& (relative_rank(Us, ksq) == RANK_1 && rank_of(ksq) == rank_of(s)) // king has lost right to castle.
&& (!ei.pi->has_open_file_on_side(Us, file_of(ksq), left))) if ( ((file_of(ksq) < FILE_E) == (file_of(s) < file_of(ksq)))
&& rank_of(ksq) == rank_of(s)
&& relative_rank(Us, ksq) == RANK_1
&& !ei.pi->has_open_file_on_side(Us, file_of(ksq), file_of(ksq) < FILE_E))
score -= make_score(pos.can_castle(Us) ? (TrappedRookPenalty - mob * 16) / 2 score -= make_score(pos.can_castle(Us) ? (TrappedRookPenalty - mob * 16) / 2
: (TrappedRookPenalty - mob * 16), 0); : (TrappedRookPenalty - mob * 16), 0);
} }