|numb||The index of the base room to check from.|
With this function you can retrieve the index of the room
after the room input into the function. For example you can
use the read only variable room to get the index of the current room
and then use this function to find the room that follows it in the
resource tree. If there is no room after the one you input then -1
if room_next(room) != -1
The above code will check to see if the next room exists and if so, it will go to it.