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Stellaris Dev Diary #172 - Reworking the AI

Bonjour everyone, its the French Paradox speaking! For those who dont know me, Ive joined the Stellaris team this December after a year and a half as a programmer on Europa Universalis IV. Today, we are gonna talk about AI.
A good introduction for those new to the field

Fifty Shades of AI


There are several AI modules in Stellaris. For historical reasons we call them ministers as each one is supposed to handle a specific role in an AI empire. There are 3 broad kinds:
  • The AI foreign minister handles diplomacy, federations, galactic community, peace deals and the like
  • The AI interior minister is in charge of the economy. He keeps budgets and order constructions, both civil and military.
  • The AI military minister is in command of all troops and military fleets, and also responsible for laying out strategic plans when at war.
For each of those ministries there are different ministers there are several options that can be selected for every empire in the game. All of those have generic one which behaves more or less like wed expect a player to and is used for most AI empires. Then we have a bunch of specialized ones for special tags such as space monsters, fallen empires, crisis, marauders and the like. As almost everything in our games, AI is configurable in script for our modders, although Im not exactly sure what would happen if you assigned a space monster military AI to the caravaneers ;) In guise of a welcoming gift when I joined the team, I was tasked with reworking the military one...

The Military AI


To give you a little bit of background, there were several generations of military AIs in Stellaris. The generic one (used by most classic empires) was redone by the great @sidestep last year, while the more specialized ones (crisis, space monsters) have kept close to what they were on release. In the midst of the sad and dark swedish winter, I managed to bring some improvements that Ill showcase today. First of all, I worked on visualization to help us debug how the AI thinks. Funny thing is, it already made it look better to audiences even if it didnt actually change any behaviour. Its actually something thats been observed in video games: a good AI tells you what it does, which makes it look smarter. One of my favourite examples of that would be the enemies in FEAR. So by typing 'debug_ai' in the console and observing an AI empire, you can see what it has in mind:
I don't even see the code. All I see is blonde, brunette, redhead. Hey uh, you want a drink? As a simple analogy, imagine that the AI has a war minister that looks at the big picture and rates every potential target, a general staff who assign fleets to some of those objectives, and then admirals who try to lead those fleets on a tactical level to achieve those objectives... Wanna read more about the AI rework? Check out the full post in our forum here!


[ 2020-03-05 12:23:36 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
  • Stellaris: Nemesis
  • Stellaris: Aquatics Species Pack
  • Stellaris: Overlord
  • Stellaris: Toxoids Species Pack
  • Stellaris: First Contact Story Pack
  • Stellaris: Galactic Paragons
  • Stellaris: Astral Planes
  • 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
RECOMMENDED SETUP
  • OS: Ubuntu 20.04 x64
  • Processor: Intel iCore i5-3570K or AMD Ryzen 5 2400GMemory: 4 GB RAM
  • 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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10.0$ (75%)
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12.0$ (60%)
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