The second system is an AI-director, much like that seen in Left 4 Dead and is designed to manage the pacing of the game.
And that's where the second AI system kicks in. However, this can lead to the alien either trapping the player in a corner of the map or completely losing you as you make a break for it. But it has to do this of its own accord and rely on what it detect within the world from its own audio and visual sensors. The behaviour tree is ultimately responsible for ensuring the alien hunts down and kills the player. With specific behaviours such as searching lockers and crawling into smaller vents only activated after the player has repeatedly escaped its clutches using these methods several times, thus providing the illusion that the creature is learning. The xenomorphs behaviour tree can search the corridors of the space station, hunt down errant noises or investigate areas the creature is interested in. I explain how behaviour trees work in episode 2 of my AI 101 subseries, so check that out if you need to know more. The xenomorph itself is controlled by whats known as a behaviour tree - a very common technique used in AAA video games to control non-player characters. It's important to recognise there are two systems that control the alien. If you never read or watched my original piece, or need a recap, here's some of the key information you need to know about the xenomorph in Alien: Isolation. And while I have previously explored the inner workings of the AI of Alien: Isolation, there are still many secrets left to uncover for developers seeking to replicate its inner working, or for players old and new as they attempt to escape the Sevastapol space station. It's a testimony to the hard work of everyone involved at Creative Assembly. From a developers perspective now in 2020, there have been many exciting and novel applications of AI across the games industry - including many we've seen on this channel - but I don't think any other game has quite caught the attention and imagination of players in recent years. If the design and implementation of the xenomorph did not stand up to scrutiny, then the game would have quickly collapsed in on itself. A game where the success or failure of its core premise relied heavily on players believing in the intelligence and cunning of its primary antagonist. So to celebrate the 50th video in the YouTube series, I revisit this topic in more detail.Īlien: Isolation left an indelible mark on artificial intelligence for video games. The AI of Alien: Isolation is a topic I have previously explored and is without doubt the most popular video/blog I've ever produced.
You can support this work by visiting my Patreon page. 'AI and Games' is a crowdfunded YouTube series that explores research and applications of artificial intelligence in video games.
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