X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=inline;f=src%2Fmove.h;h=3d97799741667d73c2009a65265f93fe503e9fd2;hb=7f519a246327e164056bbd3e77ed5a672618094d;hp=bbc2ec099c1134163521a86e26fc1c3ea3d8c5cf;hpb=b6ab610e2f3d9148e2a75984800cebc0757b7f01;p=stockfish
diff --git a/src/move.h b/src/move.h
index bbc2ec09..3d977997 100644
--- a/src/move.h
+++ b/src/move.h
@@ -17,34 +17,23 @@
along with this program. If not, see .
*/
-
#if !defined(MOVE_H_INCLUDED)
#define MOVE_H_INCLUDED
-////
-//// Includes
-////
-
-#include
+#include
#include "misc.h"
-#include "piece.h"
-#include "square.h"
-
+#include "types.h"
-////
-//// Types
-////
-
-class Position;
+// Maximum number of allowed moves per position
+const int MAX_MOVES = 256;
-/// A move needs 17 bits to be stored
+/// A move needs 16 bits to be stored
///
/// bit 0- 5: destination square (from 0 to 63)
/// bit 6-11: origin square (from 0 to 63)
-/// bit 12-14: promotion piece type
-/// bit 15: en passant flag
-/// bit 16: castle flag
+/// bit 12-13: promotion piece type - 2 (from KNIGHT-2 to QUEEN-2)
+/// bit 14-15: special move flag: promotion (1), en passant (2), castle (3)
///
/// Special cases are MOVE_NONE and MOVE_NULL. We can sneak these in
/// because in any normal move destination square is always different
@@ -62,149 +51,82 @@ struct MoveStack {
int score;
};
-// Note that operator< is set up such that sorting will be in descending order
-inline bool operator<(const MoveStack& f, const MoveStack& s) { return s.score < f.score; }
+inline bool operator<(const MoveStack& f, const MoveStack& s) { return f.score < s.score; }
-// An helper insertion sort implementation
-template
-inline void insertion_sort(T* firstMove, T* lastMove)
+// An helper insertion sort implementation, works with pointers and iterators
+template
+inline void sort(K firstMove, K lastMove)
{
T value;
- T *cur, *p, *d;
+ K cur, p, d;
if (firstMove != lastMove)
for (cur = firstMove + 1; cur != lastMove; cur++)
{
p = d = cur;
value = *p--;
- if (value < *p)
+ if (*p < value)
{
do *d = *p;
- while (--d != firstMove && value < *--p);
+ while (--d != firstMove && *--p < value);
*d = value;
}
}
}
-// Our dedicated sort in range [firstMove, lastMove), first splits
-// positive scores from ramining then order seaprately the two sets.
-template
-inline void sort_moves(T* firstMove, T* lastMove, T** lastPositive)
-{
- T tmp;
- T *p, *d;
-
- d = lastMove;
- p = firstMove - 1;
-
- d->score = -1; // right guard
-
- // Split positives vs non-positives
- do {
- while ((++p)->score > 0) {}
-
- if (p != d)
- {
- while (--d != p && d->score <= 0) {}
-
- tmp = *p;
- *p = *d;
- *d = tmp;
- }
-
- } while (p != d);
-
- // Sort just positive scored moves, remaining only when we get there
- insertion_sort(firstMove, p);
- *lastPositive = p;
-}
-
-// Picks up the best move in range [curMove, lastMove), one per cycle.
-// It is faster then sorting all the moves in advance when moves are few,
-// as normally are the possible captures. Note that is not a stable alghoritm.
-template
-inline T pick_best(T* curMove, T* lastMove)
-{
- T bestMove, tmp;
-
- bestMove = *curMove;
- while (++curMove != lastMove)
- {
- if (*curMove < bestMove)
- {
- tmp = *curMove;
- *curMove = bestMove;
- bestMove = tmp;
- }
- }
- return bestMove;
-}
-
-////
-//// Inline functions
-////
-
inline Square move_from(Move m) {
- return Square((int(m) >> 6) & 0x3F);
+ return Square((m >> 6) & 0x3F);
}
inline Square move_to(Move m) {
return Square(m & 0x3F);
}
-inline PieceType move_promotion_piece(Move m) {
- return PieceType((int(m) >> 12) & 7);
-}
-
-inline int move_is_special(Move m) {
- return m & (0x1F << 12);
+inline bool move_is_special(Move m) {
+ return m & (3 << 14);
}
-inline int move_is_promotion(Move m) {
- return m & (7 << 12);
+inline bool move_is_promotion(Move m) {
+ return (m & (3 << 14)) == (1 << 14);
}
inline int move_is_ep(Move m) {
- return m & (1 << 15);
+ return (m & (3 << 14)) == (2 << 14);
}
inline int move_is_castle(Move m) {
- return m & (1 << 16);
+ return (m & (3 << 14)) == (3 << 14);
}
-inline bool move_is_short_castle(Move m) {
- return move_is_castle(m) && (move_to(m) > move_from(m));
+inline PieceType promotion_piece_type(Move m) {
+ return PieceType(((m >> 12) & 3) + 2);
}
-inline bool move_is_long_castle(Move m) {
- return move_is_castle(m) && (move_to(m) < move_from(m));
+inline Move make_move(Square from, Square to) {
+ return Move(to | (from << 6));
}
inline Move make_promotion_move(Square from, Square to, PieceType promotion) {
- return Move(int(to) | (int(from) << 6) | (int(promotion) << 12));
+ return Move(to | (from << 6) | (1 << 14) | ((promotion - 2) << 12)) ;
}
-inline Move make_move(Square from, Square to) {
- return Move(int(to) | (int(from) << 6));
+inline Move make_ep_move(Square from, Square to) {
+ return Move(to | (from << 6) | (2 << 14));
}
inline Move make_castle_move(Square from, Square to) {
- return Move(int(to) | (int(from) << 6) | (1 << 16));
+ return Move(to | (from << 6) | (3 << 14));
}
-inline Move make_ep_move(Square from, Square to) {
- return Move(int(to) | (int(from) << 6) | (1 << 15));
+inline bool move_is_ok(Move m) {
+ return move_from(m) != move_to(m); // Catches also MOVE_NONE
}
+class Position;
-////
-//// Prototypes
-////
-
-extern std::ostream& operator<<(std::ostream& os, Move m);
-extern Move move_from_string(const Position& pos, const std::string &str);
-extern const std::string move_to_string(Move m);
-extern bool move_is_ok(Move m);
-
+extern const std::string move_to_uci(Move m, bool chess960);
+extern Move move_from_uci(const Position& pos, const std::string& str);
+extern const std::string move_to_san(Position& pos, Move m);
+extern const std::string pretty_pv(Position& pos, int depth, Value score, int time, Move pv[]);
#endif // !defined(MOVE_H_INCLUDED)