The concept is simple, I and perhaps others
would like to see map linking being implemented, what I mean by that would linking z levels to cardinal directions of the map.
One way to do it would be to add a new list to the world datum, world.map_links. The variable would basicly be the same length that world.maxz is and every line is either null or a list, which has 4 z level references, for example:
world.map_links[z_level]=list(north_z,south_z,east_z,west_z)
The point would be to be able to render the z levels next to each other and directly walk from one z level to the next once you move out from it's border, while the movement part can be done with the currently existing methods by making a registry of z levels and what they are linked to, it can't be made to render the visual aspect of it, without using up too much resources.
To have this feature and to change the world.map_links at runtime would be a blessing.
http://www.byond.com/forum/?post=108177
http://www.byond.com/forum/?post=1301510
http://www.byond.com/forum/?post=1338561