Spatial 2D sound w/ reverb, first attempt

main/text_viewport.gd

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+extends SubViewport
+
+# All nodes from the MainViewport that are in the text_viewport group
+# are shadowed in this SubViewport
+
+@onready var camera: Camera2D = $Camera2D
+@onready var container: Node2D = %LevelTextRootContainer
+
+# map nodes to its shadowed nodes
+var mapping: Dictionary = {}
+
+func update_mapping():
+	var nodes = get_tree().get_nodes_in_group("text_viewport")
+	for k in mapping.keys():
+		if not is_instance_valid(k): # check if node is gone
+			container.remove_child(mapping[k])
+			mapping.erase(k)
+	for n in nodes:
+		if not n in mapping.keys():
+			var dup = n.duplicate()
+			dup.remove_from_group("text_viewport")
+			mapping[n] = dup
+			container.add_child(dup)
+
+func _process(_delta: float) -> void:
+	update_mapping()
+	# update shadowed nodes
+	for k in mapping:
+		var v =  mapping[k]
+		if k is Label and k.text != v.text:
+			v.text = k.text
+		if (k is Label or k is Node2D):
+			mapping[k].global_position = k.global_position
+	# camera position
+	var orig_camera: Camera2D = NodeRegistry.player.camera
+	camera.global_position = -orig_camera.get_viewport_transform().origin