Hearts of Iron IV

Hearts of Iron IV

Expert AI 5.0
Question 8 Feb, 2021 @ 7:13am
Several issues from 2020 that still need to be addressed
Downloaded the mod again and noticed that it still has a few issues from 2020 that need to be addressed :

- AI sometimes keeps producing obsolete equipment : https://i.imgur.com/WlFLWYO.jpg

Thats AI France producing obsolete artillery.

- On default settings, the AI spams obsolete destroyers : https://i.imgur.com/BAnoN39.jpg

- The AI still doesnt build light cruisers, which are essential to winning any naval fight. Light cruisers kill screens, a fleet with light cruisers vs a fleet without light cruisers will win easily because they will wipe out the destroyers and render the capitals useless.

This is France's fleet in 1941, they keep spamming subs and destroyers. https://i.imgur.com/XJ2TF03.jpg

But with only 1 light cruiser, they will be easily destroyed by any fleet with a few light cruisers. Those 50 early era destroyers will pop like a balloon, and then you have 10 capitals with no screens who are sitting ducks.
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Question 9 Feb, 2021 @ 3:44pm 
1949 England with 700 factories and a massive empire....

https://cdn.discordapp.com/attachments/209384257016037376/808843552758693898/unknown.png

Thats 2 early era carriers, 3 early era BCs, 7 early era BBs....almost all the ships in the screenshot are early era ships. This is England, a nation that is supposed to have a strong navy. The AI has a serious problem with filling up their navies with nothing but early era trash even in the late game.

The England AI has 38 dockyards but only 22 are in use...its quite clear that the AI hasnt been making full use of its dockyards and its already 1949.

The AI is also spamming WAY too many fighters. England has 14k deployed fighters, this is pointless because it doesnt have enough fuel to sustain 14k deployed fighters. There really should be a sanity check here. Its max military consumption is 110k+ fuel per day, but its only got 26k fuel per day.

Ive uploaded the save here if you want to take a look : {LINK REMOVED}
Kondi  [developer] 10 Feb, 2021 @ 2:07am 
AI producing obsolete equipment is usually intended. It's probably trying to build a stockpile of artillery there before upgrading the line.

As far as the naval production goes, it's basically as good as it's going to get as far as I'm concerned barring any updates from PDX side. The AI may have the 36 hull but it may be lacking in specific modules it wants to use in a design. It also uses the cheapest hull type for some ship types on purpose. And some countries on some EAI settings simply focus on building a large amount of cheap ship types (IIRC all of them on Challenging just build DD, CL and SS). Or perhaps the AI is trying to survive against submarines in which case it will attempt to build a lot of escorts.

You can configure the AI to want to make advanced designs from the EAI settings and it will try to build them but you'll run into other AI production issues and the balance of the game being what it is, I doubt it's even worth it for anything except immersion. If you've checked that these countries actually do want advanced designs and *none* of them try to make any, there could be a problem in the mod. I also want to point out that the main issue with the AI's navy at the moment is how the AI actually uses its fleets, not its production. It's spectacularly bad at any sort of optimal play and no amount of tweaking its production will make up for it sadly.

Super late isn't worth balancing the AI for. The game itself wasn't made to handle extreme late games (too many factories, massive shortages of resources, the AI can't handle all that). There are too many issues to go into. What the AI UK tries to build depends on the EAI focuses for that country. There's an issue with unassigned dockyards, it tends to resolve itself after a while and no I can't do anything to fix it. It could also be a massive resource shortage in such a late game scenario blocking all naval production which also can't be fixed.

Building a lot of fighters isn't a problem as such, the AI unfortunately just wants to deploy all of them. However, it is capable of somewhat managing its active fuel consumption so a massive max consumption isn't necessarily a problem for it, not that the AI is great with fuel use in general. There is a sanity check for fighters but 14k isn't that many.
Last edited by Kondi; 10 Feb, 2021 @ 2:11am
Question 15 Feb, 2021 @ 9:20am 
Not talking about super late game but countries should be upgrading their navies instead of relying on their starting fleets that have no radar and tier 1 modules. The AI just spamming early era destroyers doesnt help them at all since they just end up as fodder.

Im looking at the settings opened via ctrl+shift+o and i dont see anything that makes them build "advanced designs" more. Unless you mean setting "military focus" to challenging.

Did you try loading the save i uploaded before? I think if you take a look at what ENG is doing, you will understand what i mean.

P.S. Is request construction permission broken? It doesnt actually allow you to build in the AI's territory.

Edit : Ive sent you a friend request on steam by the way to talk about the mod. Does this mod have a discord or something?
Last edited by Question; 15 Feb, 2021 @ 9:22am
Kondi  [developer] 18 Feb, 2021 @ 6:55am 
Steam deletes your links. However, I checked in-game and I didn't find any issues with the mod. If the AI *wants* to build advanced designs, it will at the very least create those designs and queue them up. There are any number of reasons why the AI might have an obsolete fleet even if it tries to build advanced designs.

Instructions to use both mods are visible in-game. In challenging mode, you'll actually have the AI building cheap ships while in default, at least some countries should try to build advanced designs.

Advanced ships sound great but AFAIK the balance of the game is still such that having a lot of cheap escorts is a good strategy and more importantly perhaps, it is a production strategy that the AI doesn't fail at which can't be said for the AI building advanced ships (esp. capital ships).
Last edited by Kondi; 18 Feb, 2021 @ 6:58am
Question 18 Feb, 2021 @ 7:24pm 
The problem is that spamming early era destroyers will lose the naval war if you dont have any light cruiser batteries to kill screens.

The reason why cheap destroyer screens work is because in MP, people are using fake CAs with 1 medium cruiser battery + max light cruiser batteries to kill screens. The destroyers are just meatshields for the cruisers. The cruisers will slaughter screens and then the torps will sink capitals.

If your AI just spams early era destroyers without cruisers, then all you have is cheap destroyer fodder with nothing that can harm enemy ships.

Did you get the friend invite that I sent by the way? Or does the mod have a discord?
Kondi  [developer] 19 Feb, 2021 @ 5:00am 
On challenging mode specifically, the AI does build cheap destroyers and upgraded light destroyers so it should be fine. Not sure the actual designs are optimal though but the cruisers should be armed to the teeth.

However on default mode the AI (some of them like ENG) might not be building light cruisers which is probably pretty bad. It also builds capital ships on default so it doesn't have a lot of dockyards to go around.

After all... challenging is what you play if you want a more min-maxy AI. Default is a little more immersive. If you're not happy with either, you can reconfigure it through the settings in-game as per instructions.
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