src/tree.h

   1 /* Copyright (C) 2007-2011 Vincent Ollivier
   2  *
   3  * Purple Haze is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * Purple Haze is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 #ifndef TREE_H
  18 #define TREE_H
  19
  20 #include "position.h"
  21
  22 static const unsigned int MAX_TREE = 512;
  23
  24 class Tree
  25 {
  26     private:
  27         Position tree[MAX_TREE];
  28         unsigned int tree_top; // TODO Redundant? current_position().get_ply()
  29     public:
  30         Tree() : tree_top(0) {}
  31         void push() {
  32             tree[tree_top + 1] = tree[tree_top];
  33             ++tree_top;
  34         };
  35         void pop() {
  36             --tree_top;
  37         };
  38         Position& top() {
  39             return tree[tree_top];
  40         };
  41         bool has_repetition_draw();
  42 };
  43
  44 #endif /* !TREE_H */