emit signal when room changes

scenes/autoload/game_director.gd

@@ -3,7 +3,21 @@ extends Node
 
 func goto_room(previous_room: Room, waypoint: Waypoint) -> void:
 	print("changing rooms")
+	
+	# for signal
+	var prev_name: StringName
+	var next_name: StringName
+	
+	prev_name = previous_room.name
+	
+	# wait until previous room is freed
 	await previous_room.tree_exited
+	
+	# instantiate next room and set room variables
 	var next_room: Room = waypoint.to_scene.instantiate()
+	next_name = next_room.name
 	next_room.initial_spawn = waypoint.spawn_coordinates
 	get_tree().root.add_child(next_room)
+	
+	# notify event bus
+	EventBus.room_changed.emit(prev_name, next_name, waypoint)