mirror of
https://github.com/sockspls/badfish
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82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
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Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(SEARCH_H_INCLUDED)
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#define SEARCH_H_INCLUDED
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#include <cstring>
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#include <vector>
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#include "types.h"
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class Position;
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struct SplitPoint;
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namespace Search {
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/// The Stack struct keeps track of the information we need to remember from
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/// nodes shallower and deeper in the tree during the search. Each search thread
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/// has its own array of Stack objects, indexed by the current ply.
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struct Stack {
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SplitPoint* sp;
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int ply;
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Move currentMove;
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Move excludedMove;
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Move bestMove;
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Move killers[2];
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Depth reduction;
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Value eval;
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Value evalMargin;
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int skipNullMove;
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};
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/// The LimitsType struct stores information sent by GUI about available time
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/// to search the current move, maximum depth/time, if we are in analysis mode
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/// or if we have to ponder while is our opponent's side to move.
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struct LimitsType {
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LimitsType() { memset(this, 0, sizeof(LimitsType)); }
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bool useTimeManagement() const { return !(maxTime | maxDepth | maxNodes | infinite); }
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int time, increment, movesToGo, maxTime, maxDepth, maxNodes, infinite, ponder;
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};
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/// The SignalsType struct stores volatile flags updated during the search
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/// typically in an async fashion, for instance to stop the search by the GUI.
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struct SignalsType {
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bool stopOnPonderhit, firstRootMove, stop, failedLowAtRoot;
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};
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extern volatile SignalsType Signals;
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extern LimitsType Limits;
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extern std::vector<Move> RootMoves;
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extern Position RootPosition;
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extern void init();
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extern int64_t perft(Position& pos, Depth depth);
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extern void think();
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} // namespace
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#endif // !defined(SEARCH_H_INCLUDED)
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