The purpose of this second year university portfolio piece was to create artificial intelligence using a behaviour tree in Unity. I was eager to try this as it was something I'd never done before. Behaviour trees have a big advantage over finite state machines (FSM) through their ability to chain individual tasks together in order to create more complex behaviour.

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Unity doesn't include behaviour trees as a standard feature so I decided to use the animator controller system which uses a state machine layout. This made it simpler to visualise the transitions between behaviours.