BT composite that sequentially executes tasks until first ``SUCCESS``.
..rst-class:: classref-introduction-group
Description
-----------
BTSelector executes its child tasks sequentially, from first to last, until any child returns ``SUCCESS``. If a child task results in ``FAILURE``, BTSelector will immediately execute the next child task until one of them returns ``SUCCESS`` or all of them result in ``FAILURE``. BTSelector and :ref:`BTSequence<class_BTSequence>` are two of the most common building blocks of behavior trees. Essentially, while :ref:`BTSequence<class_BTSequence>` is similar to a boolean AND operation, BTSelector is similar to a boolean OR operation. Selectors enable the behavior tree to respond to changes in the environment and trigger transitions between various fallback behaviors.
Returns ``RUNNING`` if a child task results in ``RUNNING``. BTSelector will remember the last child task that returned ``RUNNING``, ensuring it resumes from that point in the next execution tick.
Returns ``SUCCESS`` if a child task results in ``SUCCESS``.
Returns ``FAILURE`` if all child tasks result in ``FAILURE``.
..|virtual|replace:::abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
..|const|replace:::abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
..|vararg|replace:::abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
..|constructor|replace:::abbr:`constructor (This method is used to construct a type.)`
..|static|replace:::abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
..|operator|replace:::abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
..|bitfield|replace:::abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
