#if !defined(POSITION_H_INCLUDED)
#define POSITION_H_INCLUDED
+#include <cassert>
+
#include "bitboard.h"
#include "move.h"
#include "types.h"
class Position {
- friend class MaterialInfo;
- friend class EndgameFunctions;
-
Position(); // No default or copy c'tor allowed
Position(const Position& pos);
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;
// 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;
// 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<PieceType> Bitboard attacks_from(Square s) const;
// 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;
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;
// Game termination checks
bool is_mate() const;
- bool is_draw() const;
+ template<bool SkipRepetition> bool is_draw() const;
// Number of plies from starting position
int startpos_ply_counter() const;
void do_allow_oo(Color c);
void do_allow_ooo(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);
return st->checkersBB;
}
-inline bool Position::is_check() const {
+inline bool Position::in_check() const {
return st->checkersBB != EmptyBoardBB;
}
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;
}
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 {