Spatial 2D sound w/ reverb, first attempt

main/main.gd

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+extends Node
+
+func _ready() -> void:
+	NodeRegistry.player = %Player
+	NodeRegistry.level_root_container = %LevelRootContainer
+	Levels.load_menu()

main/main.tscn

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+[gd_scene load_steps=6 format=3 uid="uid://c13h0uf5fgx60"]
+
+[ext_resource type="Script" path="res://main/main.gd" id="1_m407c"]
+[ext_resource type="PackedScene" uid="uid://dxp3dru2lrv6h" path="res://core/shaders/outline/outline_canvas_layer.tscn" id="2_ta1pa"]
+[ext_resource type="PackedScene" uid="uid://jmy11lqcs4c" path="res://core/shaders/distortion/distortion_canvas_layer.tscn" id="3_emkei"]
+[ext_resource type="Script" path="res://main/text_viewport.gd" id="4_hxymt"]
+[ext_resource type="PackedScene" uid="uid://ebb4pfxklatj" path="res://player/player.tscn" id="5_0agpg"]
+
+[node name="Main" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_m407c")
+
+[node name="MainViewportContainer" type="SubViewportContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+stretch = true
+
+[node name="MainViewport" type="SubViewport" parent="MainViewportContainer"]
+handle_input_locally = false
+canvas_item_default_texture_filter = 0
+audio_listener_enable_2d = true
+size = Vector2i(800, 450)
+render_target_update_mode = 4
+
+[node name="LevelRootContainer" type="Node2D" parent="MainViewportContainer/MainViewport"]
+unique_name_in_owner = true
+
+[node name="Player" parent="MainViewportContainer/MainViewport" instance=ExtResource("5_0agpg")]
+unique_name_in_owner = true
+
+[node name="OutlineShader" parent="MainViewportContainer/MainViewport" instance=ExtResource("2_ta1pa")]
+
+[node name="TextViewportContainer" type="SubViewportContainer" parent="."]
+editor_description = "All nodes in the text_viewport group will be rendered in this viewport instead."
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+stretch = true
+
+[node name="TextViewport" type="SubViewport" parent="TextViewportContainer"]
+transparent_bg = true
+handle_input_locally = false
+canvas_item_default_texture_filter = 0
+size = Vector2i(800, 450)
+render_target_update_mode = 4
+script = ExtResource("4_hxymt")
+
+[node name="LevelTextRootContainer" type="Node2D" parent="TextViewportContainer/TextViewport"]
+unique_name_in_owner = true
+
+[node name="Camera2D" type="Camera2D" parent="TextViewportContainer/TextViewport"]
+editor_description = "Shadows the camera in MainViewportContainer"
+anchor_mode = 0
+
+[node name="DistortionShader" parent="." instance=ExtResource("3_emkei")]

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