X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fposition.h;h=6307f126a4a613652c1f76ebef662f01babad9f7;hb=fc519ca74a110a0ceea3c710c88da096fa850c65;hp=4305759b0cf751c7cfa0f1eaaea3d90fffade9fa;hpb=4f3fe89fb6e957fd971a76080687ba358ec27603;p=stockfish
diff --git a/src/position.h b/src/position.h
index 4305759b..6307f126 100644
--- a/src/position.h
+++ b/src/position.h
@@ -17,36 +17,20 @@
along with this program. If not, see .
*/
-
#if !defined(POSITION_H_INCLUDED)
#define POSITION_H_INCLUDED
-////
-//// Includes
-////
+#include
#include "bitboard.h"
-#include "color.h"
#include "move.h"
-#include "piece.h"
-#include "square.h"
-#include "value.h"
-
-
-////
-//// Constants
-////
+#include "types.h"
/// Maximum number of plies per game (220 should be enough, because the
/// maximum search depth is 100, and during position setup we reset the
/// move counter for every non-reversible move).
const int MaxGameLength = 220;
-
-////
-//// Types
-////
-
class Position;
/// struct checkInfo is initialized at c'tor time and keeps
@@ -122,9 +106,6 @@ struct StateInfo {
class Position {
- friend class MaterialInfo;
- friend class EndgameFunctions;
-
Position(); // No default or copy c'tor allowed
Position(const Position& pos);
@@ -144,7 +125,7 @@ public:
void print(Move m = MOVE_NONE) const;
// Copying
- void flipped_copy(const Position& pos);
+ void flip();
// The piece on a given square
Piece piece_on(Square s) const;
@@ -189,7 +170,7 @@ public:
// Checking pieces and under check information
Bitboard checkers() const;
- bool is_check() const;
+ bool in_check() const;
// Piece lists
Square piece_list(Color c, PieceType pt, int index) const;
@@ -197,6 +178,7 @@ public:
// Information about attacks to or from a given square
Bitboard attackers_to(Square s) const;
+ Bitboard attackers_to(Square s, Bitboard occ) const;
Bitboard attacks_from(Piece p, Square s) const;
static Bitboard attacks_from(Piece p, Square s, Bitboard occ);
template Bitboard attacks_from(Square s) const;
@@ -204,11 +186,10 @@ public:
// Properties of moves
bool pl_move_is_legal(Move m, Bitboard pinned) const;
- bool pl_move_is_evasion(Move m, Bitboard pinned) const;
- bool move_is_check(Move m) const;
- bool move_is_check(Move m, const CheckInfo& ci) const;
+ bool move_is_pl(const Move m) const;
+ bool move_gives_check(Move m) const;
+ bool move_gives_check(Move m, const CheckInfo& ci) const;
bool move_is_capture(Move m) const;
- bool move_is_capture_or_promotion(Move m) const;
bool move_is_passed_pawn_push(Move m) const;
bool move_attacks_square(Move m, Square s) const;
@@ -230,9 +211,9 @@ public:
void undo_null_move();
// Static exchange evaluation
- int see(Square from, Square to) const;
int see(Move m) const;
int see_sign(Move m) const;
+ static int see_value(PieceType pt);
// Accessing hash keys
Key get_key() const;
@@ -247,10 +228,7 @@ public:
// Game termination checks
bool is_mate() const;
- bool is_draw() const;
-
- // Check if side to move could be mated in one
- bool has_mate_threat();
+ template bool is_draw() const;
// Number of plies from starting position
int startpos_ply_counter() const;
@@ -269,9 +247,8 @@ public:
// Position consistency check, for debugging
bool is_ok(int* failedStep = NULL) const;
- // Static member functions
- static void init_zobrist();
- static void init_piece_square_tables();
+ // Global initialization
+ static void init();
private:
@@ -279,9 +256,10 @@ private:
void clear();
void detach();
void put_piece(Piece p, Square s);
- void do_allow_oo(Color c);
- void do_allow_ooo(Color c);
+ void set_castle_kingside(Color c);
+ void set_castle_queenside(Color c);
bool set_castling_rights(char token);
+ bool move_is_pl_slow(const Move m) const;
// Helper functions for doing and undoing moves
void do_capture_move(Key& key, PieceType capture, Color them, Square to, bool ep);
@@ -321,7 +299,7 @@ private:
int castleRightsMask[64];
StateInfo startState;
File initialKFile, initialKRFile, initialQRFile;
- bool isChess960;
+ bool chess960;
int startPosPlyCounter;
int threadID;
int64_t nodes;
@@ -339,11 +317,6 @@ private:
static const Value PieceValueEndgame[17];
};
-
-////
-//// Inline functions
-////
-
inline int64_t Position::nodes_searched() const {
return nodes;
}
@@ -432,16 +405,24 @@ inline Square Position::king_square(Color c) const {
return pieceList[c][KING][0];
}
-inline bool Position::can_castle_kingside(Color side) const {
- return st->castleRights & (1+int(side));
+inline bool Position::can_castle_kingside(Color c) const {
+ return st->castleRights & (WHITE_OO << c);
+}
+
+inline bool Position::can_castle_queenside(Color c) const {
+ return st->castleRights & (WHITE_OOO << c);
}
-inline bool Position::can_castle_queenside(Color side) const {
- return st->castleRights & (4+4*int(side));
+inline bool Position::can_castle(Color c) const {
+ return st->castleRights & ((WHITE_OO | WHITE_OOO) << c);
}
-inline bool Position::can_castle(Color side) const {
- return can_castle_kingside(side) || can_castle_queenside(side);
+inline void Position::set_castle_kingside(Color c) {
+ st->castleRights |= (WHITE_OO << c);
+}
+
+inline void Position::set_castle_queenside(Color c) {
+ st->castleRights |= (WHITE_OOO << c);
}
inline Square Position::initial_kr_square(Color c) const {
@@ -454,12 +435,12 @@ inline Square Position::initial_qr_square(Color c) const {
template<>
inline Bitboard Position::attacks_from(Square s, Color c) const {
- return NonSlidingAttacksBB[piece_of_color_and_type(c, PAWN)][s];
+ return StepAttacksBB[make_piece(c, PAWN)][s];
}
template // Knight and King and white pawns
inline Bitboard Position::attacks_from(Square s) const {
- return NonSlidingAttacksBB[Piece][s];
+ return StepAttacksBB[Piece][s];
}
template<>
@@ -481,7 +462,7 @@ inline Bitboard Position::checkers() const {
return st->checkersBB;
}
-inline bool Position::is_check() const {
+inline bool Position::in_check() const {
return st->checkersBB != EmptyBoardBB;
}
@@ -493,6 +474,10 @@ inline bool Position::square_is_weak(Square s, Color c) const {
return !(pieces(PAWN, opposite_color(c)) & attack_span_mask(c, s));
}
+inline int Position::see_value(PieceType pt) {
+ return seeValues[pt];
+}
+
inline Key Position::get_key() const {
return st->key;
}
@@ -510,7 +495,7 @@ inline Key Position::get_material_key() const {
}
inline Score Position::pst(Color c, PieceType pt, Square s) {
- return PieceSquareTable[piece_of_color_and_type(c, pt)][s];
+ return PieceSquareTable[make_piece(c, pt)][s];
}
inline Score Position::pst_delta(Piece piece, Square from, Square to) {
@@ -528,7 +513,7 @@ inline Value Position::non_pawn_material(Color c) const {
inline bool Position::move_is_passed_pawn_push(Move m) const {
Color c = side_to_move();
- return piece_on(move_from(m)) == piece_of_color_and_type(c, PAWN)
+ return piece_on(move_from(m)) == make_piece(c, PAWN)
&& pawn_is_passed(c, move_to(m));
}
@@ -538,9 +523,8 @@ inline int Position::startpos_ply_counter() const {
inline bool Position::opposite_colored_bishops() const {
- return piece_count(WHITE, BISHOP) == 1
- && piece_count(BLACK, BISHOP) == 1
- && !same_color_squares(piece_list(WHITE, BISHOP, 0), piece_list(BLACK, BISHOP, 0));
+ return piece_count(WHITE, BISHOP) == 1 && piece_count(BLACK, BISHOP) == 1
+ && opposite_color_squares(piece_list(WHITE, BISHOP, 0), piece_list(BLACK, BISHOP, 0));
}
inline bool Position::has_pawn_on_7th(Color c) const {
@@ -548,19 +532,13 @@ inline bool Position::has_pawn_on_7th(Color c) const {
}
inline bool Position::is_chess960() const {
- return isChess960;
+ return chess960;
}
inline bool Position::move_is_capture(Move m) const {
- // Move must not be MOVE_NONE !
- return (m & (3 << 15)) ? !move_is_castle(m) : !square_is_empty(move_to(m));
-}
-
-inline bool Position::move_is_capture_or_promotion(Move m) const {
-
- // Move must not be MOVE_NONE !
- return (m & (0x1F << 12)) ? !move_is_castle(m) : !square_is_empty(move_to(m));
+ assert (m != MOVE_NONE && m != MOVE_NULL);
+ return !move_is_special(m) ? !square_is_empty(move_to(m)) : move_is_ep(m);
}
inline PieceType Position::captured_piece_type() const {
@@ -571,12 +549,4 @@ inline int Position::thread() const {
return threadID;
}
-inline void Position::do_allow_oo(Color c) {
- st->castleRights |= (1 + int(c));
-}
-
-inline void Position::do_allow_ooo(Color c) {
- st->castleRights |= (4 + 4*int(c));
-}
-
#endif // !defined(POSITION_H_INCLUDED)