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93 lines
2.5 KiB
GDScript
93 lines
2.5 KiB
GDScript
2 years ago
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## This node will attempt to execute all of its children just like a
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## [code]SequenceStar[/code] would, with the exception that the children
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## will be executed in a random order.
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@tool
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@icon("../../icons/sequence_random.svg")
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class_name SequenceRandomComposite extends RandomizedComposite
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# Emitted whenever the children are shuffled.
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signal reset(new_order: Array[Node])
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## Whether the sequence should start where it left off after a previous failure.
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@export var resume_on_failure: bool = false
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## Whether the sequence should start where it left off after a previous interruption.
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@export var resume_on_interrupt: bool = false
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## A shuffled list of the children that will be executed in reverse order.
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var _children_bag: Array[Node] = []
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var c: Node
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func _ready() -> void:
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super()
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if random_seed == 0:
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randomize()
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func tick(actor: Node, blackboard: Blackboard) -> int:
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if _children_bag.is_empty():
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_reset()
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# We need to traverse the array in reverse since we will be manipulating it.
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for i in _get_reversed_indexes():
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c = _children_bag[i]
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if c != running_child:
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c.before_run(actor, blackboard)
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var response = c.tick(actor, blackboard)
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if can_send_message(blackboard):
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BeehaveDebuggerMessages.process_tick(c.get_instance_id(), response)
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if c is ConditionLeaf:
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blackboard.set_value("last_condition", c, str(actor.get_instance_id()))
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blackboard.set_value("last_condition_status", response, str(actor.get_instance_id()))
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match response:
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SUCCESS:
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_children_bag.erase(c)
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c.after_run(actor, blackboard)
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FAILURE:
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_children_bag.erase(c)
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c.after_run(actor, blackboard)
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return FAILURE
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RUNNING:
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running_child = c
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if c is ActionLeaf:
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blackboard.set_value("running_action", c, str(actor.get_instance_id()))
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return RUNNING
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return SUCCESS
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func after_run(actor: Node, blackboard: Blackboard) -> void:
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if not resume_on_failure:
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_reset()
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super(actor, blackboard)
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func interrupt(actor: Node, blackboard: Blackboard) -> void:
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if not resume_on_interrupt:
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_reset()
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super(actor, blackboard)
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func _get_reversed_indexes() -> Array[int]:
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var reversed: Array[int]
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reversed.assign(range(_children_bag.size()))
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reversed.reverse()
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return reversed
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func _reset() -> void:
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var new_order = get_shuffled_children()
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_children_bag = new_order.duplicate()
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_children_bag.reverse() # It needs to run the children in reverse order.
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reset.emit(new_order)
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func get_class_name() -> Array[StringName]:
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var classes := super()
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classes.push_back(&"SequenceRandomComposite")
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return classes
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