Blackboard to exchange data between behaviors.

Current decider level. Incremented/Decremented while the behavior tree is walked through. Indicates how deep in the tree (on which level) the execution currently is. It's just an internal information, so don't change it from the outside.

Task specific data.

Behavior tree execution status.

Indicates if this behavior should log events. If not set the behaviors/deciders should only log warnings and errors to the logger.