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## The blackboard is an object that can be used to store and access data between
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## multiple nodes of the behavior tree.
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@icon("icons/blackboard.svg")
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class_name Blackboard extends Node
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var blackboard: Dictionary = {}
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func keys() -> Array[String]:
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var keys: Array[String]
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keys.assign(blackboard.keys().duplicate())
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return keys
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func set_value(key: Variant, value: Variant, blackboard_name: String = 'default') -> void:
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if not blackboard.has(blackboard_name):
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blackboard[blackboard_name] = {}
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blackboard[blackboard_name][key] = value
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func get_value(key: Variant, default_value: Variant = null, blackboard_name: String = 'default') -> Variant:
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if has_value(key, blackboard_name):
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return blackboard[blackboard_name].get(key, default_value)
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return default_value
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func has_value(key: Variant, blackboard_name: String = 'default') -> bool:
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return blackboard.has(blackboard_name) and blackboard[blackboard_name].has(key) and blackboard[blackboard_name][key] != null
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func erase_value(key: Variant, blackboard_name: String = 'default') -> void:
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if blackboard.has(blackboard_name):
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blackboard[blackboard_name][key] = null
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