Add addons

Sprout/addons/beehave/nodes/beehave_root.gd

@@ -0,0 +1,93 @@
+## Controls the flow of execution of the entire behaviour tree.
+@tool
+class_name BeehaveRoot extends BeehaveTree
+@icon("../icons/tree.svg")
+
+
+@export var enabled: bool = true:
+	set(value):
+		enabled = value
+		set_physics_process(enabled)
+	get:
+		return enabled
+
+@export_node_path var actor_node_path : NodePath
+
+var actor : Node
+
+@onready var blackboard: Blackboard = Blackboard.new()
+
+
+func _ready() -> void:
+	if Engine.is_editor_hint():
+		return
+	
+	if self.get_child_count() != 1:
+		push_error("Beehave error: Root %s should have one child (NodePath: %s)" % [self.name, self.get_path()])
+		disable()
+		return
+
+	actor = get_parent()
+	if actor_node_path:
+		actor = get_node(actor_node_path)
+
+	set_physics_process(enabled)
+
+
+func _physics_process(delta: float) -> void:
+	if Engine.is_editor_hint():
+		return
+	
+	blackboard.set_value("delta", delta)
+	var status = self.get_child(0).tick(actor, blackboard)
+
+	# Updates the current running action.
+	var running_action = get_running_action() if status == RUNNING else null
+	blackboard.set_value("running_action", running_action)
+
+
+func _get_configuration_warnings() -> PackedStringArray:
+	var warnings: PackedStringArray = super._get_configuration_warnings()
+	
+	if get_child_count() != 1:
+		warnings.append("BeehaveRoot should have exactly one child node.")
+	
+	return warnings
+
+
+func get_running_action() -> ActionLeaf:
+	var node = get_child(0)
+	while node != null:
+		if node is Composite:
+			node = (node as Composite).running_child
+		elif node is ActionLeaf:
+			return node
+	
+	push_error("Beehave error: Could not find running action in tree root '%s'." % name)
+	return null
+
+
+func get_last_condition() -> Variant:
+	if blackboard.has_value("last_condition"):
+		return blackboard.get_value("last_condition")
+	return null
+
+
+func get_last_condition_status() -> String:
+	if blackboard.has_value("last_condition_status"):
+		var status = blackboard.get_value("last_condition_status")
+		if status == SUCCESS:
+			return "SUCCESS"
+		elif status == FAILURE:
+			return "FAILURE"
+		else:
+			return "RUNNING"
+	return ""
+
+
+func enable() -> void:
+	enabled = true
+
+
+func disable() -> void:
+	enabled = false