We're trying to figure out how to make, lets say a game, and let certain behaviours (level up, dead, respawn) control certain inputs. Has anybody tried something like this so far and would you help us out?
First you have to understand what Unity 3D is. It is a toolkit for developers to create applications. Pandoras Box is an application. So using Unity 3D in Pandoras Box doesn't really make sense. However...if you would like to create a game/application in Unity 3D and then use its output in Pandoras Box then you have to use Live Input/Capture Cards.
We have had triggers from Unity, Unreal and custom games trigger events in Widget Designer that affect PB. It is a bit too vague to answer here though. Usually we use a UDP or TCP connection.