New NNUE architecture and net

[stockfish] / src / nnue / features / half_ka_v2.h

diff --git a/src/nnue/features/half_ka_v2.h b/src/nnue/features/half_ka_v2.h
deleted file mode 100644 (file)
index e4b2edd..0000000
--- a/src/nnue/features/half_ka_v2.h
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-/*
-  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
-
-  Stockfish is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License, or
-  (at your option) any later version.
-
-  Stockfish is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-//Definition of input features HalfKP of NNUE evaluation function
-
-#ifndef NNUE_FEATURES_HALF_KA_V2_H_INCLUDED
-#define NNUE_FEATURES_HALF_KA_V2_H_INCLUDED
-
-#include "../nnue_common.h"
-
-#include "../../evaluate.h"
-#include "../../misc.h"
-
-namespace Stockfish {
-  struct StateInfo;
-}
-
-namespace Stockfish::Eval::NNUE::Features {
-
-  // Feature HalfKAv2: Combination of the position of own king
-  // and the position of pieces
-  class HalfKAv2 {
-
-    // unique number for each piece type on each square
-    enum {
-      PS_NONE     =  0,
-      PS_W_PAWN   =  0,
-      PS_B_PAWN   =  1 * SQUARE_NB,
-      PS_W_KNIGHT =  2 * SQUARE_NB,
-      PS_B_KNIGHT =  3 * SQUARE_NB,
-      PS_W_BISHOP =  4 * SQUARE_NB,
-      PS_B_BISHOP =  5 * SQUARE_NB,
-      PS_W_ROOK   =  6 * SQUARE_NB,
-      PS_B_ROOK   =  7 * SQUARE_NB,
-      PS_W_QUEEN  =  8 * SQUARE_NB,
-      PS_B_QUEEN  =  9 * SQUARE_NB,
-      PS_KING     =  10 * SQUARE_NB,
-      PS_NB = 11 * SQUARE_NB
-    };
-
-    static constexpr IndexType PieceSquareIndex[COLOR_NB][PIECE_NB] = {
-      // convention: W - us, B - them
-      // viewed from other side, W and B are reversed
-      { PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE,
-        PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE },
-      { PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_KING, PS_NONE,
-        PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_KING, PS_NONE }
-    };
-
-    // Orient a square according to perspective (rotates by 180 for black)
-    static Square orient(Color perspective, Square s);
-
-    // Index of a feature for a given king position and another piece on some square
-    static IndexType make_index(Color perspective, Square s, Piece pc, Square ksq);
-
-   public:
-    // Feature name
-    static constexpr const char* Name = "HalfKAv2(Friend)";
-
-    // Hash value embedded in the evaluation file
-    static constexpr std::uint32_t HashValue = 0x5f234cb8u;
-
-    // Number of feature dimensions
-    static constexpr IndexType Dimensions =
-        static_cast<IndexType>(SQUARE_NB) * static_cast<IndexType>(PS_NB);
-
-    // Maximum number of simultaneously active features.
-    static constexpr IndexType MaxActiveDimensions = 32;
-
-    // Get a list of indices for active features
-    static void append_active_indices(
-      const Position& pos,
-      Color perspective,
-      ValueListInserter<IndexType> active);
-
-    // Get a list of indices for recently changed features
-    static void append_changed_indices(
-      Square ksq,
-      StateInfo* st,
-      Color perspective,
-      ValueListInserter<IndexType> removed,
-      ValueListInserter<IndexType> added);
-
-    // Returns the cost of updating one perspective, the most costly one.
-    // Assumes no refresh needed.
-    static int update_cost(StateInfo* st);
-    static int refresh_cost(const Position& pos);
-
-    // Returns whether the change stored in this StateInfo means that
-    // a full accumulator refresh is required.
-    static bool requires_refresh(StateInfo* st, Color perspective);
-  };
-
-}  // namespace Stockfish::Eval::NNUE::Features
-
-#endif // #ifndef NNUE_FEATURES_HALF_KA_V2_H_INCLUDED