If the player gets too close, have a Combine soldier melee attack or fall back into cover. If you consider a lot of the AI applications we see in this series, techniques such as Half-Life's Finite State Machines or the Behaviour Tree of Alien: Isolation's Xenomorph, they are chock full of rules and logic that tell the AI what to do in a given situation. This is where Machine Learning, rather than traditional symbolic AI, really begins to shine. Hence the Drivatar isn't copying exactly what you would do, but rather figuring out 'how would you drive this car in this situation?'. Your friend might jump into Forza Horizon and race against your Drivatar on a track you've never experienced and driving a car you've never driven. What makes Drivatar so impressive, is that it does a whole lot more than reproduce actions it has seen the player make before. It's making intelligent assumptions about how you would race in situations you might never have tried before.
Making it one of the longest-running machine learning applications in the video games industry. They're all AI drivers that attempt to clone the behaviour of real people.īut what makes Drivatar so special is that it has been in the Forza series since the very beginning, meaning it's been in ongoing development since the first entry of the Forza Motorsport series, on the original Xbox in 2005. If you play any entry of the Forza series offline, all of the other racers you come across are Drivatars. In the case of Drivatar: by understanding how you drive cars in Forza, it can then drive an AI car in the game as if it was you in the driving seat. The idea of player modelling is that by gathering enough data of how players play a given game, an AI system can begin to make intelligent decisions that reflect that knowledge. Drivatars are the product of a highly complicated system, inspired by an AI technique we call Player Modelling.
Whether you prefer the simulation of Turn 10's Forza Motorsport or the open-world anarchy of Forza Horizon from Playground Games, you'll come into contact with Drivatars: a portmanteau of the words Driver and Avatar. So let's crack open the bonnet and find out what makes this engine tick. It's one of the longest-running applications of machine learning in the videogames industry. Allowing players all over the world to face off against their friends and other players across the Xbox Network, without ever actually playing the game together.
Drivatars are AI-controlled racers designed to drive like real people, learning from their behaviour and reproducing it in other peoples games. The Forza series is home to one of the most impressive AI implementations in modern gaming. 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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