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Get rid of some locals in do_castle_move()

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Rewrite the logic to get rid of kBefore and rBefore.

No functional change.
This commit is contained in:
Marco Costalba 2013-01-27 10:56:03 +01:00
parent 52cab06fff
commit 76a0d3c05a
1 changed files with 11 additions and 17 deletions
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28
src/position.cpp
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@ -1052,30 +1052,24 @@ void Position::do_castle_move(Move m) {
assert(is_ok(m));
assert(type_of(m) == CASTLE);
Square kto, kfrom, rfrom, rto, kAfter, rAfter;
Color us = sideToMove;
Square kBefore = from_sq(m);
Square rBefore = to_sq(m);
Square kfrom, kto, rfrom, rto;
// Find after-castle squares for king and rook
if (rBefore > kBefore) // O-O
bool kingSide = to_sq(m) > from_sq(m);
kfrom = kto = from_sq(m);
rfrom = rto = to_sq(m);
if (Do)
{
kAfter = relative_square(us, SQ_G1);
rAfter = relative_square(us, SQ_F1);
kto = relative_square(us, kingSide ? SQ_G1 : SQ_C1);
rto = relative_square(us, kingSide ? SQ_F1 : SQ_D1);
}
else // O-O-O
else
{
kAfter = relative_square(us, SQ_C1);
rAfter = relative_square(us, SQ_D1);
kfrom = relative_square(us, kingSide ? SQ_G1 : SQ_C1);
rfrom = relative_square(us, kingSide ? SQ_F1 : SQ_D1);
}
kfrom = Do ? kBefore : kAfter;
rfrom = Do ? rBefore : rAfter;
kto = Do ? kAfter : kBefore;
rto = Do ? rAfter : rBefore;
assert(piece_on(kfrom) == make_piece(us, KING));
assert(piece_on(rfrom) == make_piece(us, ROOK));