git.scottworley.com Git - slidingtile/blob - sliding_tile_lib.h

   1 #ifndef _SLIDING_TILE_LIB_H
   2 #define _SLIDING_TILE_LIB_H
   3
   4 #include <istream>
   5 #include <ostream>
   6
   7 const int BOARD_DIM = 4;
   8 const int BOARD_SIZE = BOARD_DIM * BOARD_DIM;
   9
  10 struct InvertedBoard {
  11   signed char pos[BOARD_SIZE];
  12 };
  13
  14 struct Board {
  15   signed char board[BOARD_SIZE];
  16   bool is_valid() const;
  17   signed char hole() const;
  18   InvertedBoard invert() const;
  19   int distance(const Board& o) const;
  20   int distance(const InvertedBoard& invo) const;
  21 };
  22 std::istream& operator>>(std::istream& is, Board& board);
  23 std::ostream& operator<<(std::ostream& os, const Board& board);
  24
  25 extern signed char adjacent[BOARD_SIZE][5];
  26
  27 #endif /* _SLIDING_TILE_LIB_H */