"ai_strategy_plan" Selection Probability

[Sir Doctor Professor]

Does anyone know what value or values the AI uses when determining which "ai_strategy_plans" (listed in HOI4's files) will be assigned to each country at the start of the game? I'm working on reducing the probability AI run countries will engage in significantly ahistorical behavior when "historical focuses" is deselected (I obviously want some variation but every country doing an ideological 180 is a bit much) but cutting back the ai_will_do factor for the relevant national focuses (or even setting them to 0) does not seem to have the desired effect. I'll go ahead and apologize in advance as I'm not sure that this is the right subform for this question, that this question hasn't been already answered, or if I understand the system which determines AI national focus selection enough to ask this question without it seeming like gibberish (though the system seems to be needlessly opaque).

 

[MattZed]

I don't know the answer, but I've spent over an hour searching and would also like to know.

 

[Sir Doctor Professor]

I'm glad to see I'm not the only one who thinks it's strange this information isn't more freely available.

 

[bitmode]

AI strategy plans work via country flags. If you just disable "historical AI focus", no flag gets set and none of the plans will be executed. The AI will use the weights assigned to the individual focuses, advisors etc.

If you switch the country's AI behavior to "random" during game setup, an action at game start resolves that to one of the available plans according to a list of weights. Those are defined in common/on_actions/00_on_actions.txt:

#Not run on a specific country.
    on_startup = {
        effect = {
            GER = {
                if = {
                    limit = {
                        has_dlc = "Waking the Tiger"
                        has_game_rule = {
                            rule = GER_ai_behavior
                            option = RANDOM
                        }
                    }
                    random_list = {
                        50 = { GER = { set_country_flag = GER_AI_RANDOM_FASCIST } }
                        35 = { GER = { set_country_flag = GER_AI_RANDOM_KAISER } }
                        15 = { GER = { set_country_flag = GER_AI_RANDOM_DEMOCRATIC } }
                    }
                }
            }
            etc.

 

[Sir Doctor Professor]

AI strategy plans work via country flags. If you just disable "historical AI focus", no flag gets set and none of the plans will be executed. The AI will use the weights assigned to the individual focuses, advisors etc.

If you switch the country's AI behavior to "random" during game setup, an action at game start resolves that to one of the available plans according to a list of weights. Those are defined in common/on_actions/00_on_actions.txt:

#Not run on a specific country.
    on_startup = {
        effect = {
            GER = {
                if = {
                    limit = {
                        has_dlc = "Waking the Tiger"
                        has_game_rule = {
                            rule = GER_ai_behavior
                            option = RANDOM
                        }
                    }
                    random_list = {
                        50 = { GER = { set_country_flag = GER_AI_RANDOM_FASCIST } }
                        35 = { GER = { set_country_flag = GER_AI_RANDOM_KAISER } }
                        15 = { GER = { set_country_flag = GER_AI_RANDOM_DEMOCRATIC } }
                    }
                }
            }
            etc.

Understood. Thank you very much!

 

[FindFloppies]

}
random_list = {
50 = { GER = { set_country_flag = GER_AI_RANDOM_FASCIST } }
35 = { GER = { set_country_flag = GER_AI_RANDOM_KAISER } }
15 = { GER = { set_country_flag = GER_AI_RANDOM_DEMOCRATIC } }

So, actually, Germany on non-historic does still have a weight of half, vs 15 Demo, 35 Empire. And can be manipulated/modded for any of the nations. Makes sense.

I had previously said Germany is evenly divided on paths, but it seems it's not so.

Thanks, Bitmode, for the steer.

(For others, if you look in the files, the other countries are in the same on_startup structure, just continue past GER.)

EDIT: Ah, not even X/100, it's X/<total>

 

[MattZed]

AI strategy plans work via country flags. If you just disable "historical AI focus", no flag gets set and none of the plans will be executed. The AI will use the weights assigned to the individual focuses, advisors etc.

If you switch the country's AI behavior to "random" during game setup, an action at game start resolves that to one of the available plans according to a list of weights. Those are defined in common/on_actions/00_on_actions.txt:

#Not run on a specific country.
    on_startup = {
        effect = {
            GER = {
                if = {
                    limit = {
                        has_dlc = "Waking the Tiger"
                        has_game_rule = {
                            rule = GER_ai_behavior
                            option = RANDOM
                        }
                    }
                    random_list = {
                        50 = { GER = { set_country_flag = GER_AI_RANDOM_FASCIST } }
                        35 = { GER = { set_country_flag = GER_AI_RANDOM_KAISER } }
                        15 = { GER = { set_country_flag = GER_AI_RANDOM_DEMOCRATIC } }
                    }
                }
            }
            etc.

The devs have said that disabling historical focuses now (as of the NSB release) randomly picks one of the AI strategies, rather than using weighted focus picking. In fact, it seems every focus now has weight 100 to completely disregard this old functionality.

Is ticking off historical focuses now just the same as setting every AI to random, or can you tell if something different is going on?

 

[Niko92]

The devs have said that disabling historical focuses now (as of the NSB release) randomly picks one of the AI strategies, rather than using weighted focus picking. In fact, it seems every focus now has weight 100 to completely disregard this old functionality.

Is ticking off historical focuses now just the same as setting every AI to random, or can you tell if something different is going on?

Ticking off historical is the same as setting random in the strategy section for all countries (unless you've manually chose a certain path for the country). This is of course fully controlled by the on_action and not written directly into the game. I think bitmode's code is from an older game version, below is what it looks like now:

GER = {
                if = {
                    limit = {
                        has_dlc = "Waking the Tiger"
                        OR = {
                            AND = {
                                is_historical_focus_on = no
                                has_game_rule = {
                                    rule = GER_ai_behavior
                                    option = DEFAULT
                                }
                            }
                            has_game_rule = {
                                rule = GER_ai_behavior
                                option = RANDOM
                            }
                        }
                    }
                    random_list = {
                        40 = { GER = { set_country_flag = GER_AI_RANDOM_FASCIST } }
                        35 = { GER = { set_country_flag = GER_AI_RANDOM_KAISER } }
                        25 = { GER = { set_country_flag = GER_AI_RANDOM_DEMOCRATIC } }
                    }
                }
            }

So if you have historical focus turned off and "default" as the AI strategy, or you've chosen "random" as strategy, a random AI strategy will be chosen.

 

[bitmode]

The devs have said that disabling historical focuses now (as of the NSB release) randomly picks one of the AI strategies, rather than using weighted focus picking. In fact, it seems every focus now has weight 100 to completely disregard this old functionality.

Oh wow. So I guess the answer to OP's question then is that is not possible anymore to have variation without ideologic 180s. Major step backward (pun intended) imho.

 

[Sebadoh]

Oh wow. So I guess the answer to OP's question then is that is not possible anymore to have variation without ideologic 180s. Major step backward (pun intended) imho.

Agreed. It would seem the DEVS have stepped in it again. (And smeared it all over the carpet).

 

[Sebadoh]

This is where you will find an editable file that contains the AI path percentages for each of 31 counties.

C:\Program Files (x86)\Steam\steamapps\common\Hearts of Iron IV\common\on_actions\00_on_actions.txt . I am playing the Open Beta.

In my opinion there should be no country where the historical option is less than 50%. And yet it is, for most countries.

For my taste the historical path should be at least 70% likely.

Chaos.

 

[FindFloppies]

This is where you will find an editable file that contains the AI path percentages for each of 31 counties.

C:\Program Files (x86)\Steam\steamapps\common\Hearts of Iron IV\common\on_actions\00_on_actions.txt . I am playing the Open Beta.

In my opinion there should be no country where the historical option is less than 50%. And yet it is, for most countries.

For my taste the historical path should be at least 70% likely.

Chaos.

So write a mod that does that. No twenty people will all agree what the values should be. If you want historic all the time, that button already exists.

 

[Sir Doctor Professor]

I've already written the mod. You can find it on the workshop here: https://steamcommunity.com/sharedfiles/filedetails/?id=2681229561
Sorry, I would have replied with it sooner if I realized this thread was still active.

 

[Sebadoh]

I've already written the mod. You can find it on the workshop here: https://steamcommunity.com/sharedfiles/filedetails/?id=2681229561
Sorry, I would have replied with it sooner if I realized this thread was still active.

Already using your excellent mod. Big thumbs up!

 

[Sir Doctor Professor]

Already using your excellent mod. Big thumbs up!

Thanks for the encouragement. I'm glad you're getting use out of it.