AI Recruitment Policy

[pongi]

Hello there,

I am posting this thread, i need a little help in coding of MTW2. Where can i change the recruitment policy of the AI.

They AI most of the time focusing on Militia units instead of Castle Units and doesn't train any cavalry.

i added recruit_priority_offset to EDU, but little change happened.

Thanks for the answers

[z3n]

AI Recruitment Offset > Upkeep and Recruitment Cost vs Unit Strength > AI Personalities

These control a set of AI production personalities, which contribute a bias towards building and training (but not retraining or repairing). This bias is fairly small compared to game-generated factors such as "the enemy is attacking me with lots of cavalry, build me some spearmen". Explaining the weighting system which drives the production AI in full is beyond the scope of this document as it would take several days to write.

The same system as for the buildings applies. Troop category and class are combined at the time the unit database is loaded to give a unit production type, and the likelihood of the AI choosing to produce a given unit type which can be produced is then modified by the unit type weighting. There is also a random element in the choosing of which building or troop type to produce next, so the effect of the bias is a statistical thing. Another factor that is applied over the top which may obscure the bias is a tendency towards producing troop mixtures (according to what is already in the garrison) and a weighting according to unit strength.

[Titus le Chmakus]

Yeah but they are almost all useless ... Firstly you (or someone else) said that all the personalities with artillery are not to use because they produce too much artillery, then Secondly, there are not all types of mixing (for ex. no heavy cavalry + heavy infantry) and lastly, what does the "Smith" exactly do ?

[z3n]

First, set the units type to heavy or light, depending on what you want it to be. This plays directly into the AI personalities (recruit light or heavy), as it contributes a bias on its own. I use something like fortified knud (can't recall specifically, but if you want I can check)

Secondly, upkeep and recruitment cost vs quality of the infantry/cavalry is paramount to whether the AI will actually recruit the unit as that too contributes a bias towards the unit and whether it will recruit the unit.

Lastly, make sure that the recruitment priority is less in general for units you don't want it to recruit by a significant margin (for example peasants at -50 or even -75) while feudals are positive or ambivalent at 0.

[Titus le Chmakus]

Ok I'm not yet at the EDU, so I don't understand what you mean with recruitment priority. When I'll get to that, I'll probably post

[bitterhowl]

How do you think - is automatic army composing button in custom battle a valid way to test AI recruitment priority for same faction in campaign?

[z3n]

I never thought about that but it could be very valid as a test.

You can test it by tweaking the recruitment priorities for a single faction to be entirely 0 or negative for almost all units except for 1 which is in the high positive, for example 100. And making the cost of them low.


Although I think the campaign is likely the most effective test overall, due to the AI personalities being used at that point. Since during a custom battle they would probably not be.

[Xamax]

someone can tell me. how can I get AI to recruit agents and naval more often?

[z3n]

Lower the recruitment cost and upkeep within the export_descr_unit for ships.

Within descr_character, lower the recruitment cost and upkeep for the agents.

[Xamax]

I set the cost of ships 100 or less, upkeeper 10-50, recruit_priority_offset 80, the wage of the Admiral 0. the AI also has a script for which its Treasury will always be greater than 0... still, the faction doesn't get ships.

[z3n]

What AI are you using, and do they need the ships?

[Xamax]

Are needed this is Tunis in the mod of the Italian wars(). I tried standard AI(vanilla), and Skynet(but only AI on the strategic map, without a script for tactical battles, I think it will not affect the ships?). There is no difference.
https://cdn.discordapp.com/attachmen...73/unknown.png

The AI is well-used by the start fleet, makes landings, attacks, but does not recruit new ships. Thus, with the loss of the start fleet, Tunisia remains cut off from the world.

[z3n]

Try higher recruitment priority and lower costs even more. We used to have problems with the AI recruiting too many ships, and the way we fixed it was by making the cost higher and recruitment priority lower.