Retire direction.cpp

[stockfish] / src / direction.cpp

diff --git a/src/direction.cpp b/src/direction.cpp
deleted file mode 100644 (file)
index ebff65b..0000000
--- a/src/direction.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
-  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
-
-  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/>.
-*/
-
-
-////
-//// Includes
-////
-
-#include "square.h"
-
-int8_t DirectionTable[64][64];
-
-
-static SquareDelta direction(Square orig, Square dest) {
-
-  const SquareDelta directions[] = {
-      DELTA_E, DELTA_N, DELTA_NE, DELTA_NW, DELTA_W, DELTA_S, DELTA_SW, DELTA_SE
-  };
-
-  Square from, to;
-
-  for (int idx = 0; idx < 8; idx++)
-  {
-      from = orig;
-      to = from + directions[idx];
-
-      while (to != dest && square_distance(to, from) == 1 && square_is_ok(to))
-      {
-          from = to;
-          to += directions[idx];
-      }
-
-      if (to == dest && square_distance(from, to) == 1)
-          return directions[idx];
-  }
-  return DELTA_NONE;
-}
-
-void init_direction_table() {
-
-  for (Square s1 = SQ_A1; s1 <= SQ_H8; s1++)
-      for (Square s2 = SQ_A1; s2 <= SQ_H8; s2++)
-          DirectionTable[s1][s2] = uint8_t(direction(s1, s2));
-}