Hello,
I’m using behavior tree for my AI but I can’t find any information on how to use node memory.
I want to have a sequence node remembering the state of a In Progress node. For the moment I use a Move To node but my behavior tree stuck on it when the node result is In Progress instead of just my sequence parent.
The behavior I want is to flee player if in range, else move to a location. But if my behavior tree stuck on move to while it is not finished I cannot flee.
Thanks for your help.
I have a sort of workaround (maybe I misundestood unreal BT implementation and it is the correct way to do it), I added a decorator checking player is not in range and added an abort rule set to self. So the task seem to be aborted when player is in range.
But It can be very confusing to add these kind of decorators at different place, is it the correct way to do this kind of behavior ?
Node memory is available from C++ only. It is a dynamic allocated structure specified by programmer. You can use a service node and blackboard based decorators with enum (or other type) for simple scheduling behaviors.
Thanks for your answer.
Yes in C++ you can use a structure to keep data for your task, but I have no idea on how making a sequence returning to in progress node instead of all behavior tree. The root node goes directly to last in progress node, I want to do it locally, from direct parent as a sequence for instance, it avoids to skip a more important behavior in all the tree.
Do you know if this approach is possible with unreal BT ?
Service is a dispatcher of behaviors. Decorator is a direct node which performs switching. Service contains logic and writes to blackboard variable. Decorator does switching.
