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doc: clarify scoping for BTState (#271)

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Laurent Senta 2025-01-10 16:42:09 +01:00 committed by GitHub
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doc/source/behavior-trees/using-blackboard.rst
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@ -122,10 +122,13 @@ This creates a "blackboard scope chain," where each :ref:`Blackboard<class_Black
and there is no limit to how many blackboards can be in this chain.
It's important to note that the :ref:`Blackboard<class_Blackboard>` doesn't modify values in the parent scopes.
Some scopes are created automatically. For instance, when using the :ref:`BTNewScope<class_BTNewScope>`
and :ref:`BTSubtree<class_BTSubtree>` decorators, or when a :ref:`LimboState<class_LimboState>`
has non-empty blackboard plan defined, or when a root-level :ref:`LimboHSM<class_LimboHSM>`
node is used. Such scopes prevent naming collisions between contextually separate environments.
Scopes are created automatically to prevent naming collisions between contextually separate environments:
- Within :ref:`BTNewScope<class_BTNewScope>`.
- Under :ref:`BTSubtree<class_BTSubtree>` decorators.
- With :ref:`LimboState<class_LimboState>` that have a non-empty blackboard plan defined.
- Under :ref:`LimboHSM<class_LimboHSM>` nodes: A new scope is created at the root level,
and each :ref:`BTState<class_BTState>` child also receives its own separate scope.
Sharing data between several agents
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~