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Document Threat[] indices

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From Marco's repo.

No functional change.
This commit is contained in:
lucasart 2014-07-29 07:05:12 +08:00
parent f2053ba19f
commit 5adc678628
1 changed files with 4 additions and 3 deletions
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7
src/evaluate.cpp
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@ -498,6 +498,7 @@ namespace {
Bitboard b, weakEnemies, protectedEnemies; Bitboard b, weakEnemies, protectedEnemies;
Score score = SCORE_ZERO; Score score = SCORE_ZERO;
enum { Minor, Major };
// Protected enemies // Protected enemies
protectedEnemies = (pos.pieces(Them) ^ pos.pieces(Them,PAWN)) protectedEnemies = (pos.pieces(Them) ^ pos.pieces(Them,PAWN))
@ -505,7 +506,7 @@ namespace {
& (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]); & (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]);
if(protectedEnemies) if(protectedEnemies)
score += Threat[0][type_of(pos.piece_on(lsb(protectedEnemies)))]; score += Threat[Minor][type_of(pos.piece_on(lsb(protectedEnemies)))];
// Enemies not defended by a pawn and under our attack // Enemies not defended by a pawn and under our attack
weakEnemies = pos.pieces(Them) weakEnemies = pos.pieces(Them)
@ -517,11 +518,11 @@ namespace {
{ {
b = weakEnemies & (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]); b = weakEnemies & (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]);
if (b) if (b)
score += Threat[0][type_of(pos.piece_on(lsb(b)))]; score += Threat[Minor][type_of(pos.piece_on(lsb(b)))];
b = weakEnemies & (ei.attackedBy[Us][ROOK] | ei.attackedBy[Us][QUEEN]); b = weakEnemies & (ei.attackedBy[Us][ROOK] | ei.attackedBy[Us][QUEEN]);
if (b) if (b)
score += Threat[1][type_of(pos.piece_on(lsb(b)))]; score += Threat[Major][type_of(pos.piece_on(lsb(b)))];
b = weakEnemies & ~ei.attackedBy[Them][ALL_PIECES]; b = weakEnemies & ~ei.attackedBy[Them][ALL_PIECES];
if (b) if (b)