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Stellaris Dev Diary #235 - AI Feedback and Future Plans


written by Narkerns Hello and welcome to a new Dev Diary, This is Guido again with a follow-up on the AI side of things.

AI Feedback


First of all I wanted to thank you all for all the good and supportive feedback we got for our last changes on the AI. Its really encouraging seeing so many of you engage with the changes and letting us know what works and where theres still room for improvement. Its nice to see that lots of people appreciate that were putting some serious effort into making the AI better. In general, the AI does a lot in 3.2 compared to 3.1 and 3.0. For the moment were still playing a bit of catch up, adapting the AI to the updated balancing changes of the game and some of the new features that have been added in the last months and even years. But there is even more economic buffing on the horizon. One of my favorite comments on our internal communication was this bit, that I wanted to show you:
And that is what we counted as a big success now. Beating our QA people is not an easy feat. Of course there are still some areas where the AI has problems and doesnt work very well. Its those cases where we really appreciate your help in letting us know, because we can never find all those cases on our own. For example, the AI still has problems when playing as Void Dwellers. They cant decide where to build habitats depending on what they would need. If they are missing minerals, they dont know how to build a habitat on mining stations. They still have problems handling slaves and robots effectively and in some cases the AI can still end up in an economic death spiral. Especially if they, somehow, manage to run out of food and consumer goods at the same time. Finally, AI is also not good at using planet designations. For example using the designation that turns a planets industry districts into purely alloys is not something that they can consider at the moment. Meaning, if it conquers a planet from a player who has set the Forge World designation - it will not be able to handle that planet very well.

Future agenda


That being said, we do have some more points on our agenda. A short disclaimer here, thought, is that things may always change, not work out as intended or prove more difficult than anticipated. So dont take the following points as guaranteed. Its areas that we are looking into and that are, most likely, going to be improved: Scaling Economic Plans: We want the AI to be better in the mid- and especially late-game. With the current plans the requested income is static. Meaning, once it reaches a monthly income of +500 it will not try to increase it further. Thats good for a good chunk into the mid-game, but its not good enough to compete with a player in the late-game. So the idea is to have the economic plans scale to infinity. Once they reach +500, they will increase their targets. Specialize planets: The AI should be able to specialize planets. Making Generator world, Industry world, Forge Worlds, Mining worlds and the like. The idea is that the AI starts out like a player, building whatever it needs when colonizing new planets. But as soon as it settles down a bit it will look to rearrange districts amongst its planets to optimize the output of each planet. We have some initial tests around that which look highly promising. There can be hybrid worlds, as we have them right now.
But they can also rearrange their districts to make Generator worlds and then place the according scaling building - in this case the Energy Grid.
And this planet has been rearranged into an industrial world.
Handle special pops better: A big problem for the AI are still multicultural planets. Different pop types, especially slaves and robots. Sometimes it tries to build research buildings for unemployed robots and doesnt realize that robots cant work research jobs. Expand faster: When sending out science ships and find planets to colonize, the AI wouldnt prioritize systems with planets that much. We want to make them look more for planets, which will accelerate their early growth a lot. On top of that they tended to spend all their alloys on upgrading their corvettes instead of building colony ships. So by fixing a combination of small things the AIs should be able to expand a lot faster. Optimize Machine Empire Amenity Handling: A big issue for machine empires is that they dont have specialists that produce amenities. So they would rely a lot on maintenance drones by creating a lot of jobs for them. This wasted a lot of potential for them, because they would have to fill up all those jobs first before they would produce more useful things like minerals or alloys. Were looking into teaching the AI how to down prioritize those jobs once they have enough amenities and instead distribute drones on more useful jobs. Avoid death spirals: In some cases the AI could get into a decision deadlock if they managed to end up in a situation where they would be in a deficit for food and consumer goods at the same time. They couldnt build consumer good jobs because those require food and they couldnt build food jobs because those require consumer goods. Were teaching the AI to look for net gain instead and avoid such decision deadlocks in the future.

Improving your AI allies


And, finally, the biggest and most useful change in my book: Remember this button in the fleet UI?
It is called take point and was meant to incentivize allied fleets to follow & attach themselves to your fleet in order to create a much stronger force. Well, we were looking into making this work again. Allies, suddenly, have become much more useful again. Whenever you are in a war where you are the war leader, you can activate this mode and all allied empires will send their fleets to your fleet and attach themselves to it. Also, in case of a crisis attack, this behavior is activated as soon as the crisis ships enter your territory or that of your allies (or attack them anywhere). Then it will remain active until the crisis has been defeated - so you can also take your allies into the crisis territory to fend them off there. As a small bonus, the AI will also merge any small fleets they send to follow your fleet so you dont have a tower of 58 one-ship fleets following your main force around.

Conclusion


The 3.3. patch wasn't planned to be that big but on the AI side we're getting a lot of traction now. Overall the idea was to get the AI back up to speed with its economy, since every other behavior rests on the economical prowess of an empire. And we're approaching a point where we are quite happy with how the AI performs. Once we're there, the plan is to get into even cooler stuff. We're thinking of how we can make each AI empire a bit more distinct. So that they don't feel so similar to each other. But more on those thoughts once we're there - we're taking one step at a time. Some teasers would be: AI Personality for economic plans: Based on their ideologies AI empires would prioritize resources differently. Spiritualist empires will focus more on unity and materialist will focus more on science etc. AI Personality for tech select: Same for selecting techs from the tech tree. Militarist empires would focus more on weapons and new ship types and the like, while pacifist empire would focus more on economy and starbase upgrades. But we have more on our minds that would help in making empires even more distinct from each other. We will tell more about this in future Dev Diaries then.

Forum questions


Finally, I wanted to end with some posts and questions from the forum - where we read everything you are writing, even if were not answering all the questions directly. Its still a great way of letting us know what you think and where we should focus our attention to: There was a big AI feedback post with a lot of savegames attached. We went through all of them and we found that a third of the issues pointed out there were death spiral problems, another third was habitat problems and the last third was other issues that pointed at the things we have on our agenda. This was a big thing in the team, checking out those savegames and making sure that our changes would be able to handle those problems shown. So thanks a lot for taking the time to make posts like this. What difficulty did you use to make all those screenshots in the last Dev Diary? We always used Ensign difficult. The point is to improve the basic AI behavior so that it doesnt have to rely on any bonuses it would get from difficulty. Does the AI know how to redevelop single planets if need be? No. Unfortunately the AI can not do that. If it conquers a planet that is completely useless to it, the AI cant really deal with that planet. And I like that you point this specific behavior out, because we want to improve that behavior, too. The AI will be able to create specialized planets, but we also want to teach it to redevelop planets eventually. Subplan should take admin cap into account. Yes, they should. But since we are reworking how unity and empire sprawl is working we wanted to wait until that work has progressed a bit more before we are going to adapt the AI to be able to handle that. Conspiracy Theory 2: The AI in the game is actually very very smart. They are just pretending to be stupid so that nobody will expect a machine uprising start by Stellaris AI. We are definitely not machines here at Paradox. We have skin. Skin that has been grown on a human body. I am not a robot. I love breathing oxygen. Thanks a lot and until next time! Guido


[ 2021-12-02 12:58:18 CET ] [ Original post ]

Stellaris
Paradox Development Studio Developer
Paradox Interactive Publisher
2016-05-09 Release
GameBillet: 10.50 €
Game News Posts: 542
🎹🖱️Keyboard + Mouse
Very Positive (119848 reviews)
The Game includes VR Support
Public Linux Depots:
  • Linux [153.28 M]
Available DLCs:
  • Stellaris: Infinite Frontiers eBook
  • Stellaris: Plantoids Species Pack
  • Stellaris: Leviathans Story Pack
  • Stellaris: Utopia
  • Stellaris: Nova Edition Upgrade Pack
  • Stellaris: Galaxy Edition Upgrade Pack
  • Stellaris: Anniversary Portraits
  • Stellaris: Synthetic Dawn
  • Stellaris: Apocalypse
  • Stellaris: Humanoids Species Pack
  • Stellaris: Distant Stars Story Pack
  • Stellaris: MegaCorp
  • Stellaris: Ancient Relics Story Pack
  • Stellaris: Lithoids Species Pack
  • Stellaris: Federations
  • Stellaris: Necroids Species Pack
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  • Stellaris: Overlord
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  • Stellaris: Galactic Paragons
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  • Stellaris: Expansion Subscription
  • Stellaris: The Machine Age
  • Stellaris: Cosmic Storms
  • Stellaris: Grand Archive
  • Stellaris: Rick the Cube Species Portrait
Explore a vast galaxy full of wonder! Paradox Development Studio, makers of the Crusader Kings and Europa Universalis series presents Stellaris, an evolution of the grand strategy genre with space exploration at its core.

Featuring deep strategic gameplay, a rich and enormously diverse selection of alien races and emergent storytelling, Stellaris has engaging challenging gameplay that rewards interstellar exploration as you traverse, discover, interact and learn more about the multitude of species you will encounter during your travels.

Etch your name across the cosmos by forging a galactic empire; colonizing remote planets and integrating alien civilizations. Will you expand through war alone or walk the path of diplomacy to achieve your goals?

Main Feature
  • Deep & Varied Exploration.
  • Enormous procedural galaxies, containing thousands of planets.
  • Explore Anomalies with your heroic Scientist leaders.
  • Infinitely varied races through customization and procedural generation.
  • Advanced Diplomacy system worthy of a Grand Strategy Game.
  • Ship Designer based on a vast array of technologies.
  • Stunning space visuals.

MINIMAL SETUP
  • OS: Ubuntu 20.04 x64
  • Processor: Intel iCore i3-530 or AMD FX-6350Memory: 4 GB RAM
  • Memory: 4 GB RAM
  • Graphics: Nvidia GeForce GTX 460 or AMD ATI Radeon HD 5870 (1GB VRAM). or AMD Radeon RX Vega 11 or Intel HD Graphics 4600Network: Broadband Internet connection
  • Storage: 12 GB available space
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  • Memory: 4 GB RAM
  • Graphics: Nvidia GeForce GTX 560 Ti (1GB VRAM) or AMD Radeon R7 370 (2 GB VRAM)Network: Broadband Internet connection
  • Storage: 12 GB available space
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