void Ant::update( GameState* state ) {

   enemiesinsight = 0;
   foodinsight = 0;
   friendsinsight = 0;

   std::queue<Location> locqueue;
   Location cloc, nloc;

   std::vector<std::vector<bool> > visited(state->rows, std::vector<bool>( state->cols, 0 ));

   locqueue.push(loc);

   state->map[loc.row][loc.col].flags |= S_VISIBLE_BIT;
   visited[loc.row][loc.col] = 1;

   while( !locqueue.empty() ) {
      cloc = locqueue.front();
      locqueue.pop();

      for ( int d = 0; d < TDIRECTIONS; ++d ) {
         nloc = getloc( cloc, d );
         if (!visited[nloc.row][nloc.col] && GameState::distance2(loc, nloc) <= state->viewrange) {
            locqueue.push(nloc);
         }
      }

      state->map[cloc.row][cloc.col].flags |= S_VISIBLE_BIT;

      if ( state->map[cloc.row][cloc.col].ant > 0 ) enemiesinsight++;
      if ( state->map[cloc.row][cloc.col].flags & S_FOOD_BIT ) foodinsight++;
      if ( state->map[cloc.row][cloc.col].ant == 0 ) friendsinsight++;

      visited[cloc.row][cloc.col] = 1;
   }
}