Create an ArtDef file from scratch for my Unique Improvement - I only want it to use the default Farm model

[ColdTyrant]

How do I create an ArtDef file from scratch for my Custom Civ's Unique Improvement, if I want that Improvement to just use the IMPROVEMENT_FARM model? And do I need to then add anything to my Art.xml? Thank you if you can help!!!

 

[Smayo]

To use existing assets, you don't need anything in your Art.xml as far as I know. What you do need, is a Improvements.artdef, and a Landmarks.artdef. The Improvements.artdef will reference the Landmarks.artdef item and the name of your improvement, then your Landmarks.artdef will reference the art asset(s) being used.

Farms are actually a bit more complicated and I don't know how they work, theres even a whole Farms.artdef, so cant help there. I'd encourage you to look at a small DLC that adds an improvement to see how Firaxis does it. A good example is the Babylon DLC adds the Mahavihara improvement.