5,000 tri's per tile is a good max to shoot for. NWN is old, the fewer the triangles it has to deal with the better.
3, 1k textures is a bit high, reduce those down a bit if you can, to 512. The only reason I am saying that, is you claim you are not done with the tiles yet, so you will be adding additional vid ram requirements to the scene... the engine is old, I don't think we have true numerical limits for it all, but for all practical purposes, reducing vid ram usage is best, while still maintaining quality.
gMax or 3dsMax are required. Sorry, but I just don't think there is anything else out there that has translation utilities created for it. I may be wrong on that, but from what I have seen over the years, nearly everyone is using 3dsmax9 ($150.00 US) or gMax (free) is what everyone is doing.
Multiple UV's as you put it, are NOT allowed in this engine. You must split your buildings into walls, roof etc. Each with their own (or shared) texture applied to it. Only one texture may be applied per object. If you need more than that, you must split the object into multiple smaller objects each with their own textures, or sharing a single texture with associated UVW mapping applied.
a Tile in NWN is 10 meters by 10 meters. Period. If your objects are larger in either "X" or "Y" direction then you must slice them at the 10 meter mark. Height doesn't seem to be much of an issue, but 10 meter tall buildings are very rare, even in today's world with the exception of the bigger cities. (Yes, I know, there are arguments about that, but consider the reality of your own home, or your neighbors home, again, excluding bigger cities or apartment buildings etc).
The level of detail you have in your current textures, well, it will cause you some issues. Doors need their own objects, with their own textures, windows too if you want them to animate lighting at night etc.
There are dozens of tutorials out there, I personally like the stuff from Velmar AND, if you can still find them, the tutorials created by Danmar. Velmar also has a set of scripts to plug into 3dsmax some of which will also work with gMax. NWMax, available on the Vault is the most prominently used import/export tool for use with either 3dsmax of gmax.
Modifié par Bannor Bloodfist, 09 décembre 2010 - 10:42 .