My plan for some friendly AI followers was that I wanted two separate behavior trees for each of them: One that decides what happens pathfinding-wise, and one that decides what happens combat-wise (Since the AI are capable of moving and attacking at the same time). I was wondering if it’s even possible to run multiple behavior trees per AI at the same time, and if so, how?
“Run Behavior” never seems to enter when using a Simple Parallel node, and using two “Run Behavior Tree” blueprint nodes in the AI controller causes the former one to exit
No, that’s not generally possible. In the general case, two different trees might give conflicting commands to the Pawn.
You could perhaps do this by creating a second, hidden, pawn, that exists but doesn’t collide and doesn’t render, and use that for the path finding decisions, and then somehow merge the outcomes? But it’s probably better to just merge the behaviors of moving and attacking into the one tree.
You don’t need two behavior trees, you want “services”. If you examin the behavior tree shipped with Lyra, there’s a setup in which multiple services can be stacked up in one branch for “multi-tasking”. Each service can run at different “tick” intervals. Services can also be combined with tasks based on conditional checks.
If you play Lyra, examin the bots’ behavior, as they attack, reload, find ammo, and move to find better attack positions.
