After moving the copied & pasted duplicates into a common shared.lua library (and more clean up):

The attached file contains the revised Lua scripts used in the above comparison. The additional comments inflated the counts slightly. :roll:

Note that the shared.lua library module is duplicated ...

As a baseline, here are the .lua files after slight clean-up and commenting:
. Original files in attached .zip file.

Line and word counts as reported by wc -l -w (not a perfect SLOC count, but close enough) for the original (commented and slightly cleaned up) AO* .lua files:
18,229 82,170 ...

The single, shared definitions of functions IsItemInTable() , AddEquipment() , &c can be moved to the library file shared.lua .

One very important caveat:
Due to a defect in the UE4 Lua plugin, re-loading does not re-load require d .lua files.
As a work-around, the library module needs to:
set ...

As a baseline, here are the .lua files after slight clean-up and commenting:

Lines Words File
40 146 AO0Spain/script.lua
365 1852 AO0Spain/01Seville/Seville.lua
418 2001 AO0Spain/02Antequera/Antequera.lua
225 948 AO0Spain/03Merida/Merida.lua
104 360 AO0Spain/04Toledo/Toledo.lua
374 1638 AO0Spain ...

The file Content/Editor/properties.txt seems to contain an updated version of the PC2 Lua API (the bulk of the listings in pp. 1-6 of the LuaScripting document), including some new global functions:

+ Player::Equipment NewEquipment()
+ UnitType GetUnitType(string)
+ void Ask(Text, {caption, action ...

As it turns out, the plugin used in PC2 sets package.path to a value reflecting the location of the campaign directory containing the script.lua file. e.g. ../../../PanzerCorps2/Content/Campaigns/AO0Spain/?.lua

For the stand-alone scenarios in Content/Scenarios , the path is ...

I want to change the weather from summer, to fall, to winter - all within one scenario (Barbarossa AGC/AGN Multiplayer map).

I see this going one of two ways:
a) manually set all weather parameters for every turn, or a range of turns (ie a season)
-or-
b) adjust the percentage chances of clouds ...

Looks interesting!

The question is whether a central LUA library is easier to control than a separate LUA file for each individual scenario. So far, the developers have also opted for the separate LUA files - do you have better error control here?

For some definition of "control."

As of the ...

you may use functions from different scenarios as long as u paste and copy them in your scenario script

The whole point of using modules is to avoid the copy & paste, which creates an untenable maintenance problem once there are 139 or more .lua files that have to be checked and possibly ...

The UE4 plugin for Lua https://github.com/rdeioris/LuaMachine supports Lua 5.3 ( https://www.lua.org/manual/5.3/manual.html ), which supports modules.

As it turns out, the plugin used in PC2 sets package.path to a value reflecting the location of the campaign directory containing the script.lua ...

A feature request for the editor, to help with scripting the associated Lua file:

An export to text file of the expected condition and effect function s.
For example, from the Seville.pz2scn scenario, something like:

-- 3 Objectives defined in scenario:
-- @end Capture victory hexes Cadiz (7;24 ...

This document is out of date ( e.g. nothing about the Hero type or the campaign variable's properties).
Is there anywhere that has more up-to-date information on the current API/object model?

In particular, the PC2 Lua API functions used in the DLC scripts:

world:Exec(action)
world ...

(Deleted)

AO41 bugs (as of v1.1.21 Update) -
2 Script typos (missing s ) cause added equipment to be listed in the "Captured" category (used as default when not recognized), instead of the (intended) "Prototypes" category:

OperationMercury.lua, Line 431 :
AddEquipment(0, "Bf109G", 100, Prototype)
Note the ...

I was just remembering back to playing Imperium Romanum II about 30 years ago, and how that reflected on Romes particular need to pull in food from the grain baskets of North Africa/Egypt. This game covers the period where supplying its citizens with grain was beginning to become important and ...

You have modded the scripts you mean?

I have, along the lines I indicated in another thread:

Personally, I think the province capital regions need more emphasis / building specialization, with other regions relegated to resource production focus.
Otherwise, the identical builds in all regions ...

The code in Faction.bsf/Faction_Construct_StructureIsAllowed_Internal() is kinda crufty, and I see the notes to remind yourself to clean it up.
A couple of other checks to include:
if Structure_IsBeingDisassembled() for required and/or precursor/upgrade structures
after the (successful? checked ...

Nice, so most of the game is in the .bsf files!!!

Pretty much. The rules/logic and UI code, anyway. The data live in the DATA directory's .csv files (generated from the .xlsx spreadsheets, per: http://www.slitherine.com/forum/viewtopic.php?f=562&t=99539 ).
The BSF files are text files containing ...

I don't know what these numbers are.
POP_FOOD_POPULOUS_MINVAL,POP_FOOD_POPULOUS_RATIOh,POP_FOOD_POPULOUS_COEFF

These are constants defined in MapGlobals.bsf . A few have some commentary hints:
// *** P_ ***
// __POPULATION
#define POP_REALNUMBERCOEFF 10000
#define POP_BASE_NEED_FOOD 15
#define ...

I ended up doing my best to avoid taking regions that I couldn't quickly form into provinces because of this.

Seems to be the optimal strategy, especially given the decadence calculations. Also, there is the new "Liberate Region" Regional Decision.

Personally, I think the province capital ...