The artdefine for the all units looks like this <UnitArtInfo>
<Type>ART_DEF_UNIT_AZTEC_EAGLE</Type>
<Button>,Art/Interface/Buttons/Units/eagle_btn.dds</Button>
<fScale>0.44</fScale>
<fInterfaceScale>1.0</fInterfaceScale>
<bActAsLand>0</bActAsLand>
<bActAsAir>0</bActAsAir>
<NIF>Art/Units/Unique/Aztec/Jaguar/Aztec_Jaguar.nif</NIF>
<KFM>Art/Units/Unique/Aztec/Jaguar/Aztec_Jaguar.kfm</KFM>
<SHADERNIF>Art/Units/Unique/Aztec/Jaguar/Aztec_Jaguar_FX.nif</SHADERNIF>
<ShadowDef>
<ShadowNIF>Art/Units/01_UnitShadows/UnitShadow.nif</ShadowNIF>
<ShadowAttachNode>BIP Pelvis</ShadowAttachNode>
<fShadowScale>1.0</fShadowScale>
</ShadowDef>
<fBattleDistance>0.4</fBattleDistance>
<fRangedDeathTime>0.31</fRangedDeathTime>
<bActAsRanged>0</bActAsRanged>
<TrainSound>AS2D_UNIT_BUILD_UNIQUE_UNIT</TrainSound>
<AudioRunSounds>
<AudioRunTypeLoop/>
<AudioRunTypeEnd/>
</AudioRunSounds>
</UnitArtInfo>

I am trying to use This Animation (http://forums.civfanatics.com/downloads.php?do=file&id=4486), but there aren't enough files. How do I put them on the Artdef?

To correct it a bit: You want to use this model, with the default animation of the jaguar.

What you have to do:
Change the .nif files to the path, where the eagle warrior is, and let the animation file (kfm) stay.
That's it :).

To correct it a bit: You want to use this model, with the default animation of the jaguar.

What you have to do:
Change the .nif files to the path, where the eagle warrior is, and let the animation file (kfm) stay.
That's it :).


Where is the shadernif? What is the boundshape? What is the fx?

The normal nif (the first mentioned in the ArtDef) is the normal nif (eagle.nif), and the FX.nif is the nif with the fx ;) (ealge_fx.nif).

Boundshape.nif is a part of the NifViewer. It's not necessary for the game.

the FX.nif is the nif with the fx ;) (ealge_fx.nif).

I mean, what do I do with the fx?

Look at the entry for the shadernif ;).

Look at the entry for the shadernif ;).

Wuzzut?

EDIT: I get it now.