Hey CivLucas,
By Artstyles I guess you mean Civ specific and/or unique Units, Buildings, Improvements and Citysets?
As for the Units, I suggest you look at
Deliverator's BLU Mod to see how and what he has done cause I can't really help you here... What I can help you with is for the Buildings, Improvements and Citysets.
First, look for Artstyles, Citystyles and Citysets in the
Civ4 - Graphics Modpacks thread, you'll find some good ones there and you can also see how they added those.
As for the XML, let's say you want to add a new artsyle for the Spanish and that you've found a Cityset specific for them. Here's what you will need to do:
1. Put your new art files in your mod's "Assets\Art\Structures\Cities" folder.
2. You need to add a new ArtStyleType in the GlobalTypes.xml like this:
Code:
<ArtStyleTypes>
<ArtStyleType>ARTSTYLE_EUROPEAN</ArtStyleType>
<ArtStyleType>[COLOR="Red"]ARTSTYLE_SPANISH[/COLOR]</ArtStyleType>
<ArtStyleType>ARTSTYLE_NATIVES_EAST</ArtStyleType>
<ArtStyleType>ARTSTYLE_NATIVES_WEST</ArtStyleType>
<ArtStyleType>ARTSTYLE_NATIVES_SOUTH</ArtStyleType>
</ArtStyleTypes>
3. In the CIV4CivilizationInfos.xml, change the Spain Civ ArtStyleType to ARTSTYLE_SPANISH
4. Next thing you need to do is edit the CIV4CityLSystem.xml. You need to add your artstyle and path to the nif files for each Leaf LNode you find there. This can be alot of work so I wont get into details, but the best is to simply copy/paste one already existing and change it for your new Artstyle. Also, be careful about Eras too...
5. If you're adding a Native Artstyle, you may want a "LandWorked" improvement that fits your style. To do that, no need to edit the CIV4ImprovementInfos.xml or the CIV4ArtDefines_Improvement.xml, just open your Mod's CIV4PlotLSystem.xml and look for "LandWorked". You'll find one "goal:IMPROVEMENT_LAND_WORKED" for each Artstyles there. Like for the CIV4CityLSystem.xml, copy/paste one and edit it to you Artstyle's name. As for the nif building model, you want to link a node that is 1x1 from your Cityset. Like for the
Asian.nif from Warlord your using, I would choose this one (see Thumbnails for pic):
Code:
<Attribute Class="Scalar">NIF:Art/Structures/Cities/[COLOR="Red"]Asian.nif::1x1_05[/COLOR]</Attribute>
Hope that'll help you, let me know if you have any questions...
Aymerick