I've been trying to fix some scripts
and have been studying https://wiki.totalwar.com/w/Total_War:_ATTILA_Kit_Scripting.html and https://tw-modding.com/index.php/Example_Scripts.
Some of your functions appear to be original. What is your resource of knowing these calls are valid?

Here is a good reference I often used:
https://chadvandy.github.io/tw_modding_resources/

Otherwise you can loop through most elements and their child elements and try to make sense of it. It is quiet some work and often try and error.

Is there some specific functions you referring to?

I am currently interested in adding diplomacy options to the prebattle and precapture screens. In Attila, there are options to liberate, make a vassal, or make a client state. Other options are imaginable too as well such as change king (cai personality).

Ah, Attila is very different though I believe. Not sure how much closer it is to WH than to R2 because Troy is having the advantage to be based of the Warhammer core which makes modding quiet easier from what I heard for such things.

I'm actually doing assignment for the new Ancient Empires team in addition to figuring out Troy scripts and AI. Your scripts are very compelling but I don't see how they would work in Attila. Are they that different? What other teams are making ancient history overhauls based on Troy?

The WH core just offers much more functions to use in LUA. It probably gets more and more with every game iteration. WH III has currently most functions available to the modder, some that are not even available in Troy.

Nice to hear. In Attila and Rome2, the sequence for calling scripts is very strict. There is a master script in each campaign folder called scripting.lua where any script that is in the mod needs to be "required". It seems that has been removed in Troy and Scripting.lua appears to be a pointless control point. If I want to add a script to my packfile, is there somewhere to activate it or is it included automatically?

Campaign scripts are automatically loaded from
script/campaign/mod/<your_script_file>.lua

Battle scripts are automatically loaded from
script/battle/mod/<your_script_file>.lua

Thanks. I see the use of "is_major" for factions in your scripts. Where is the list of major factions defined. I was thinking it would be in db/frontend_faction_groups_to_factions_tables/agony_frontend_faction_groups_to_factions but that only gives major to hector and achilles' factions.