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

   1 #include "sliding_tile_lib.h"
   2
   3 #include <istream>
   4
   5 signed char adjacent[BOARD_SIZE][5] = {
   6   1,   4,   -1,  -1,  -1,
   7   0,   2,   5,   -1,  -1,
   8   1,   3,   6,   -1,  -1,
   9   2,   7,   -1,  -1,  -1,
  10   0,   5,   8,   -1,  -1,
  11   1,   4,   6,   9,   -1,
  12   2,   5,   7,   10,  -1,
  13   3,   6,   11,  -1,  -1,
  14   4,   9,   12,  -1,  -1,
  15   5,   8,   10,  13,  -1,
  16   6,   9,   11,  14,  -1,
  17   7,   10,  15,  -1,  -1,
  18   8,   13,  -1,  -1,  -1,
  19   9,   12,  14,  -1,  -1,
  20   10,  13,  15,  -1,  -1,
  21   11,  14,  -1,  -1,  -1,
  22 };
  23
  24 std::istream& operator>>(std::istream& is, Board& board) {
  25   for (int i = 0; i < BOARD_SIZE; i++) {
  26     if (!is.good()) {
  27       is.setstate(std::istream::failbit);
  28       break;
  29     }
  30     if (i > 0 && is.get() != ',') {
  31       is.setstate(std::istream::failbit);
  32       break;
  33     }
  34     int numeric;
  35     is >> numeric;
  36     board[i] = numeric;
  37   }
  38   return is;
  39 }