[Haskell-cafe] How to model outer space for a MUD

David McBride toad3k at gmail.com
Fri Aug 14 20:44:33 UTC 2015

If you are thinking of it as a 3d grid, you might just have a (Map
(Integer, Integer, Integer) Contents, where every room in this 3d grid that
has something in it is in the map and every room that is empty space has no
corresponding entry in the map.

Then when you enter a room you can quickly look up what is in that room,
then reasonably quickly check the neighbors in every direction to see what
the ship might be able to sense were it to travel in that direction.

In this case, space is infinite, but the datastructure is only as big as
the amount of content you have.

On Fri, Aug 14, 2015 at 4:34 PM, Michael Litchard <michael at schmong.org>

> Star Wars MUD has a 3-D coordinate system such that (0,0,0) is some
> planet. I'm curious as to how one might model this system that could
> simulate a ship's movement through a 3-D grid. Matrix, 3-D array, graph.
> None of these? Ideas?
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