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Convert ThreatBonus to Score 

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
sf_2.3.1_base
Marco Costalba 2009-11-07 15:43:45 +01:00
parent 444c7c5183
commit 1ecd8e13ee
1 changed files with 12 additions and 21 deletions
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33
src/evaluate.cpp
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@ -215,26 +215,17 @@ namespace {
// ThreatBonus[][] contains bonus according to which piece type
// attacks which one.
const Value MidgameThreatBonus[8][8] = {
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0),V(18), V(0),V(37), V(55), V(55), V(0), V(0) }, // KNIGHT attacks
{ V(0),V(18),V(37), V(0), V(55), V(55), V(0), V(0) }, // BISHOP attacks
{ V(0), V(9),V(27),V(27), V(0), V(37), V(0), V(0) }, // ROOK attacks
{ V(0),V(27),V(27),V(27), V(27), V(0), V(0), V(0) }, // QUEEN attacks
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) } // not used
};
const Value EndgameThreatBonus[8][8] = {
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0),V(37), V(0),V(47), V(97), V(97), V(0), V(0) }, // KNIGHT attacks
{ V(0),V(37),V(47), V(0), V(97), V(97), V(0), V(0) }, // BISHOP attacks
{ V(0),V(27),V(47),V(47), V(0), V(47), V(0), V(0) }, // ROOK attacks
{ V(0),V(37),V(37),V(37), V(37), V(0), V(0), V(0) }, // QUEEN attacks
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }, // not used
{ V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) } // not used
const Score ThreatBonus[8][8] = {
#define Z Score(0, 0)
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, S(18,37), Z, S(37,47), S(55,97), S(55,97), Z, Z }, // KNIGHT attacks
{ Z, S(18,37), S(37,47), Z, S(55,97), S(55,97), Z, Z }, // BISHOP attacks
{ Z, S( 9,27), S(27,47), S(27,47), Z, S(37,47), Z, Z }, // ROOK attacks
{ Z, S(27,37), S(27,37), S(27,37), S(27,37), Z, Z, Z }, // QUEEN attacks
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, Z, Z, Z, Z, Z, Z, Z } // not used
#undef Z
};
// ThreatedByPawnPenalty[] contains a penalty according to which piece
@ -717,7 +708,7 @@ namespace {
if (b)
for (PieceType pt2 = PAWN; pt2 < KING; pt2++)
if (b & pos.pieces(pt2))
bonus += Score(MidgameThreatBonus[pt1][pt2], EndgameThreatBonus[pt1][pt2]);
bonus += ThreatBonus[pt1][pt2];
}
ei.value += Sign[Us] * bonus;
}