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Refresh comments in evaluate.cpp

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-08-24 14:48:40 +02:00
parent 6125966da0
commit 74033b004e
1 changed files with 30 additions and 28 deletions
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46
src/evaluate.cpp
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@ -61,8 +61,9 @@ namespace {
S(248, 271), S(233, 201), S(252, 259), S(46, 0), S(247, 0), S(259, 0) S(248, 271), S(233, 201), S(252, 259), S(46, 0), S(247, 0), S(259, 0)
}; };
// Pieces mobility bonus in middle game and endgame, indexed by piece type // MobilityBonus[PieceType][attacked] contains mobility bonuses for middle and
// and number of attacked squares not occupied by friendly pieces. // end game, indexed by piece type and number of attacked squares not occupied
// by friendly pieces.
const Score MobilityBonus[][32] = { const Score MobilityBonus[][32] = {
{}, {}, {}, {},
{ S(-38,-33), S(-25,-23), S(-12,-13), S( 0, -3), S(12, 7), S(25, 17), // Knights { S(-38,-33), S(-25,-23), S(-12,-13), S( 0, -3), S(12, 7), S(25, 17), // Knights
@ -81,8 +82,8 @@ namespace {
S( 20, 35), S( 20, 35) } S( 20, 35), S( 20, 35) }
}; };
// Outpost bonuses for knights and bishops, indexed by square (from white's // OutpostBonus[PieceType][Square] contains outpost bonuses of knights and
// point of view). // bishops, indexed by piece type and square (from white's point of view).
const Value OutpostBonus[][64] = { const Value OutpostBonus[][64] = {
{ {
// A B C D E F G H // A B C D E F G H
@ -105,9 +106,9 @@ namespace {
V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) } V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }
}; };
// ThreatBonus[attacking][attacked] contains bonus according to which // ThreatBonus[attacking][attacked] contains threat bonuses according to
// piece type attacks which one. // which piece type attacks which one.
const Score ThreatBonus[8][8] = { const Score ThreatBonus[][8] = {
{}, {}, {}, {},
{ S(0, 0), S( 7, 39), S( 0, 0), S(24, 49), S(41,100), S(41,100) }, // KNIGHT { S(0, 0), S( 7, 39), S( 0, 0), S(24, 49), S(41,100), S(41,100) }, // KNIGHT
{ S(0, 0), S( 7, 39), S(24, 49), S( 0, 0), S(41,100), S(41,100) }, // BISHOP { S(0, 0), S( 7, 39), S(24, 49), S( 0, 0), S(41,100), S(41,100) }, // BISHOP
@ -115,9 +116,9 @@ namespace {
{ S(0, 0), S(15, 39), S(15, 39), S(15, 39), S(15, 39), S( 0, 0) } // QUEEN { S(0, 0), S(15, 39), S(15, 39), S(15, 39), S(15, 39), S( 0, 0) } // QUEEN
}; };
// ThreatedByPawnPenalty[] contains a penalty according to which piece // ThreatedByPawnPenalty[PieceType] contains a penalty according to which
// type is attacked by an enemy pawn. // piece type is attacked by an enemy pawn.
const Score ThreatedByPawnPenalty[8] = { const Score ThreatedByPawnPenalty[] = {
S(0, 0), S(0, 0), S(56, 70), S(56, 70), S(76, 99), S(86, 118) S(0, 0), S(0, 0), S(56, 70), S(56, 70), S(76, 99), S(86, 118)
}; };
@ -135,7 +136,7 @@ namespace {
// right to castle. // right to castle.
const Value TrappedRookPenalty = Value(180); const Value TrappedRookPenalty = Value(180);
// The SpaceMask[color] contains the area of the board which is considered // The SpaceMask[Color] contains the area of the board which is considered
// by the space evaluation. In the middle game, each side is given a bonus // by the space evaluation. In the middle game, each side is given a bonus
// based on how many squares inside this area are safe and available for // based on how many squares inside this area are safe and available for
// friendly minor pieces. // friendly minor pieces.
@ -148,13 +149,13 @@ namespace {
(1ULL << SQ_C5) | (1ULL << SQ_D5) | (1ULL << SQ_E5) | (1ULL << SQ_F5) (1ULL << SQ_C5) | (1ULL << SQ_D5) | (1ULL << SQ_E5) | (1ULL << SQ_F5)
}; };
/// King danger constants and variables. The king danger scores are taken // King danger constants and variables. The king danger scores are taken
/// from the KingDangerTable[]. Various little "meta-bonuses" measuring // from the KingDangerTable[]. Various little "meta-bonuses" measuring
/// the strength of the enemy attack are added up into an integer, which // the strength of the enemy attack are added up into an integer, which
/// is used as an index to KingDangerTable[]. // is used as an index to KingDangerTable[].
//
// KingAttackWeights[] contains king attack weights by piece type // KingAttackWeights[PieceType] contains king attack weights by piece type
const int KingAttackWeights[8] = { 0, 0, 2, 2, 3, 5 }; const int KingAttackWeights[] = { 0, 0, 2, 2, 3, 5 };
// Bonuses for enemy's safe checks // Bonuses for enemy's safe checks
const int QueenContactCheckBonus = 3; const int QueenContactCheckBonus = 3;
@ -163,9 +164,9 @@ namespace {
const int BishopCheckBonus = 1; const int BishopCheckBonus = 1;
const int KnightCheckBonus = 1; const int KnightCheckBonus = 1;
// InitKingDanger[] contains bonuses based on the position of the defending // InitKingDanger[Square] contains penalties based on the position of the
// king. // defending king, indexed by king's square (from white's point of view).
const int InitKingDanger[64] = { const int InitKingDanger[] = {
2, 0, 2, 5, 5, 2, 0, 2, 2, 0, 2, 5, 5, 2, 0, 2,
2, 2, 4, 8, 8, 4, 2, 2, 2, 2, 4, 8, 8, 4, 2, 2,
7, 10, 12, 12, 12, 12, 10, 7, 7, 10, 12, 12, 12, 12, 10, 7,
@ -176,7 +177,8 @@ namespace {
15, 15, 15, 15, 15, 15, 15, 15 15, 15, 15, 15, 15, 15, 15, 15
}; };
// KingDangerTable[color][] contains the actual king danger weighted scores // KingDangerTable[Color][attackUnits] contains the actual king danger
// weighted scores, indexed by color and by a calculated integer number.
Score KingDangerTable[2][128]; Score KingDangerTable[2][128];
// Pawn and material hash tables, indexed by the current thread id. // Pawn and material hash tables, indexed by the current thread id.