X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=inline;f=src%2Fpawns.h;h=fec0395f43dbc39f4656d94c462aee2bf5a8d888;hb=af4fadebda5766b2c73a08227ddfb2911b43017e;hp=8f88b57732001174120e35b4f21ca05ce068a0e5;hpb=f83b899f39a0a1b48a604dccf704b2caaeb5b068;p=stockfish
diff --git a/src/pawns.h b/src/pawns.h
index 8f88b577..fec0395f 100644
--- a/src/pawns.h
+++ b/src/pawns.h
@@ -1,7 +1,7 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2009 Marco Costalba
+ Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -17,103 +17,78 @@
along with this program. If not, see .
*/
-
#if !defined(PAWNS_H_INCLUDED)
#define PAWNS_H_INCLUDED
-////
-//// Includes
-////
-
-#include "bitboard.h"
-#include "value.h"
+#include "position.h"
+#include "tt.h"
+#include "types.h"
-////
-//// Types
-////
+const int PawnTableSize = 16384;
/// PawnInfo is a class which contains various information about a pawn
-/// structure. Currently, it only includes a middle game and an end game
-/// pawn structure evaluation, and a bitboard of passed pawns. We may want
-/// to add further information in the future. A lookup to the pawn hash table
+/// structure. Currently, it only includes a middle game and an end game
+/// pawn structure evaluation, and a bitboard of passed pawns. We may want
+/// to add further information in the future. A lookup to the pawn hash table
/// (performed by calling the get_pawn_info method in a PawnInfoTable object)
/// returns a pointer to a PawnInfo object.
-class Position;
class PawnInfo {
friend class PawnInfoTable;
public:
- Value mg_value() const;
- Value eg_value() const;
- Value kingside_storm_value(Color c) const;
- Value queenside_storm_value(Color c) const;
- Bitboard passed_pawns() const;
+ Score pawns_value() const;
+ Bitboard pawn_attacks(Color c) const;
+ Bitboard passed_pawns(Color c) const;
int file_is_half_open(Color c, File f) const;
int has_open_file_to_left(Color c, File f) const;
int has_open_file_to_right(Color c, File f) const;
- int kingShelter(Color c, Square ksq) const;
- void setKingShelter(Color c, Square ksq, int value);
+
+ template
+ Score king_shelter(const Position& pos, Square ksq);
private:
- void clear();
+ template
+ Score updateShelter(const Position& pos, Square ksq);
Key key;
- Bitboard passedPawns;
+ Bitboard passedPawns[2];
+ Bitboard pawnAttacks[2];
Square kingSquares[2];
- int16_t kingShelters[2];
- int16_t mgValue, egValue;
- int16_t ksStormValue[2], qsStormValue[2];
- uint8_t halfOpenFiles[2];
+ Score value;
+ int halfOpenFiles[2];
+ Score kingShelters[2];
};
-/// The PawnInfoTable class represents a pawn hash table. It is basically
-/// just an array of PawnInfo objects and a few methods for accessing these
-/// objects. The most important method is get_pawn_info, which looks up a
-/// position in the table and returns a pointer to a PawnInfo object.
-
-class PawnInfoTable {
+/// The PawnInfoTable class represents a pawn hash table. The most important
+/// method is get_pawn_info, which returns a pointer to a PawnInfo object.
+class PawnInfoTable : public SimpleHash {
public:
- PawnInfoTable(unsigned numOfEntries);
- ~PawnInfoTable();
- void clear();
- PawnInfo* get_pawn_info(const Position& pos);
+ PawnInfo* get_pawn_info(const Position& pos) const;
private:
- unsigned size;
- PawnInfo* entries;
+ template
+ static Score evaluate_pawns(const Position& pos, Bitboard ourPawns, Bitboard theirPawns, PawnInfo* pi);
};
-////
-//// Inline functions
-////
-
-inline Value PawnInfo::mg_value() const {
- return Value(mgValue);
-}
-
-inline Value PawnInfo::eg_value() const {
- return Value(egValue);
+inline Score PawnInfo::pawns_value() const {
+ return value;
}
-inline Bitboard PawnInfo::passed_pawns() const {
- return passedPawns;
+inline Bitboard PawnInfo::pawn_attacks(Color c) const {
+ return pawnAttacks[c];
}
-inline Value PawnInfo::kingside_storm_value(Color c) const {
- return Value(ksStormValue[c]);
-}
-
-inline Value PawnInfo::queenside_storm_value(Color c) const {
- return Value(qsStormValue[c]);
+inline Bitboard PawnInfo::passed_pawns(Color c) const {
+ return passedPawns[c];
}
inline int PawnInfo::file_is_half_open(Color c, File f) const {
- return (halfOpenFiles[c] & (1 << int(f)));
+ return halfOpenFiles[c] & (1 << int(f));
}
inline int PawnInfo::has_open_file_to_left(Color c, File f) const {
@@ -124,24 +99,9 @@ inline int PawnInfo::has_open_file_to_right(Color c, File f) const {
return halfOpenFiles[c] & ~((1 << int(f+1)) - 1);
}
-inline int PawnInfo::kingShelter(Color c, Square ksq) const {
- return (kingSquares[c] == ksq ? kingShelters[c] : -1);
-}
-
-inline void PawnInfo::setKingShelter(Color c, Square ksq, int value) {
- kingSquares[c] = ksq;
- kingShelters[c] = (int16_t)value;
+template
+inline Score PawnInfo::king_shelter(const Position& pos, Square ksq) {
+ return kingSquares[Us] == ksq ? kingShelters[Us] : updateShelter(pos, ksq);
}
-inline void PawnInfo::clear() {
-
- passedPawns = EmptyBoardBB;
- mgValue = egValue = 0;
- ksStormValue[WHITE] = ksStormValue[BLACK] = 0;
- qsStormValue[WHITE] = qsStormValue[BLACK] = 0;
- halfOpenFiles[WHITE] = halfOpenFiles[BLACK] = 0xFF;
- kingSquares[WHITE] = kingSquares[BLACK] = SQ_NONE;
-}
-
-
#endif // !defined(PAWNS_H_INCLUDED)