X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.h;h=72f52459799526c4182de23a6c5b1daca7ab9b16;hp=04e5fb5e4a89a79474e91524777b6da2608338c7;hb=6058e7cf60b043cfb142604d0956c32c24098b00;hpb=0fcda095df1caa860e8e3f3a714d5545ec9dc122 diff --git a/src/movepick.h b/src/movepick.h index 04e5fb5e..72f52459 100644 --- a/src/movepick.h +++ b/src/movepick.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) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2012 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 @@ -22,26 +22,26 @@ #include "history.h" #include "position.h" +#include "search.h" #include "types.h" -struct SearchStack; - -/// MovePicker is a class which is used to pick one legal move at a time from -/// the current position. It is initialized with a Position object and a few +/// MovePicker is a class which is used to pick one pseudo legal move at a time +/// from the current position. It is initialized with a Position object and a few /// moves we have reason to believe are good. The most important method is -/// MovePicker::pick_next_move(), which returns a new legal move each time it -/// is called, until there are no legal moves left, when MOVE_NONE is returned. +/// MovePicker::next_move(), which returns a new pseudo legal move each time +/// it is called, until there are no moves left, when MOVE_NONE is returned. /// In order to improve the efficiency of the alpha beta algorithm, MovePicker -/// attempts to return the moves which are most likely to be strongest first. +/// attempts to return the moves which are most likely to get a cut-off first. class MovePicker { - MovePicker& operator=(const MovePicker&); // silence a warning under MSVC + MovePicker& operator=(const MovePicker&); // Silence a warning under MSVC public: - MovePicker(const Position& p, Move ttm, Depth d, const History& h, SearchStack* ss, Value beta); - MovePicker(const Position& p, Move ttm, Depth d, const History& h); - Move get_next_move(); + MovePicker(const Position&, Move, Depth, const History&, Search::Stack*, Value); + MovePicker(const Position&, Move, Depth, const History&, Square recaptureSq); + MovePicker(const Position&, Move, const History&, PieceType parentCapture); + Move next_move(); private: void score_captures(); @@ -51,12 +51,14 @@ private: const Position& pos; const History& H; - Bitboard pinned; - MoveStack ttMoves[2], killers[2]; - int badCaptureThreshold, phase; + Depth depth; + Move ttMove; + MoveStack killers[2]; + Square recaptureSquare; + int captureThreshold, phase; const uint8_t* phasePtr; - MoveStack *curMove, *lastMove, *lastGoodNonCapture, *badCaptures; - MoveStack moves[MOVES_MAX]; + MoveStack *curMove, *lastMove, *lastNonCapture, *badCaptures; + MoveStack moves[MAX_MOVES]; }; #endif // !defined(MOVEPICK_H_INCLUDED)