Vast improvements and a working finite state machine, working on new guild member registration.

fsm/nodes/queue.gd

@@ -0,0 +1,51 @@
+extends StateNode
+
+@export var employee : String = ""
+
+var target
+var actor
+var in_queue
+var queued_at : GuildQueue
+var next_state : String
+var next_state_args : Array = []
+
+
+func execute(subject, ...args : Array) -> void:
+	actor = subject
+	#find the receptionist queue
+	var queue = Guild.hall.employees[employee].queue
+	#join the queue
+	join_queue(queue)
+	reposition_queue(queue.length-1)
+
+	subject.nav_agent.navigation_finished.connect(_on_navigation_finished)
+
+func _on_navigation_finished() -> void:
+	actor.nav_agent.navigation_finished.disconnect(_on_navigation_finished)
+	if !in_queue:
+		complete_state()
+
+func join_queue(queue : GuildQueue) -> void:
+	queue.add_member(actor)
+	in_queue = true
+	queued_at = queue
+	queue.advanced.connect(_on_queue_advanced)
+
+func leave_queue() -> void:
+	in_queue = false
+	queued_at.advanced.disconnect(_on_queue_advanced)
+	queued_at = null
+	
+func reposition_queue(idx : int) -> void:
+	var queue = queued_at
+	#if zero approach the receptionist with the intent to use her service at navigation complete.
+	actor.approach(queue.global_position + idx * queue.direction * 75)
+
+func _on_queue_advanced() -> void:
+	#find our place within the queue
+	var idx : int = queued_at.members.find(actor)
+	#We aren't in the queue, time to advance
+	if idx < 0:
+		leave_queue()
+	else:
+		reposition_queue(idx)