add beehave

addons/beehave/nodes/beehave_node.gd

@@ -0,0 +1,46 @@
+@tool
+class_name BeehaveNode extends Node
+
+## A node in the behavior tree. Every node must return `SUCCESS`, `FAILURE` or
+## `RUNNING` when ticked.
+
+enum { SUCCESS, FAILURE, RUNNING }
+
+
+func _get_configuration_warnings() -> PackedStringArray:
+	var warnings: PackedStringArray = []
+
+	if get_children().any(func(x): return not (x is BeehaveNode)):
+		warnings.append("All children of this node should inherit from BeehaveNode class.")
+
+	return warnings
+
+
+## Executes this node and returns a status code.
+## This method must be overwritten.
+func tick(actor: Node, blackboard: Blackboard) -> int:
+	return SUCCESS
+
+
+## Called when this node needs to be interrupted before it can return FAILURE or SUCCESS.
+func interrupt(actor: Node, blackboard: Blackboard) -> void:
+	pass
+
+
+## Called before the first time it ticks by the parent.
+func before_run(actor: Node, blackboard: Blackboard) -> void:
+	pass
+
+
+## Called after the last time it ticks and returns
+## [code]SUCCESS[/code] or [code]FAILURE[/code].
+func after_run(actor: Node, blackboard: Blackboard) -> void:
+	pass
+
+
+func get_class_name() -> Array[StringName]:
+	return [&"BeehaveNode"]
+
+
+func can_send_message(blackboard: Blackboard) -> bool:
+	return blackboard.get_value("can_send_message", false)