add beehave

addons/beehave/nodes/leaves/blackboard_erase.gd

@@ -0,0 +1,25 @@
+@tool
+class_name BlackboardEraseAction extends ActionLeaf
+
+## Erases the specified key from the blackboard.
+## Returns [code]FAILURE[/code] if expression execution fails, otherwise [code]SUCCESS[/code].
+
+## Expression representing a blackboard key.
+@export_placeholder(EXPRESSION_PLACEHOLDER) var key: String = ""
+
+@onready var _key_expression: Expression = _parse_expression(key)
+
+
+func tick(actor: Node, blackboard: Blackboard) -> int:
+	var key_value: Variant = _key_expression.execute([], blackboard)
+
+	if _key_expression.has_execute_failed():
+		return FAILURE
+
+	blackboard.erase_value(key_value)
+
+	return SUCCESS
+
+
+func _get_expression_sources() -> Array[String]:
+	return [key]