Using DebugDraw3D for in-editor relay network visualization

src/util/editor_arrow/editor_arrow.gd

@@ -1,23 +0,0 @@
-@tool
-class_name EditorArrow extends MeshInstance3D
-
-const SCALE_BUFFER := 0.1
-
-@export var target: Node3D
-
-var cached_target_position: Vector3
-var cached_position: Vector3
-
-
-func _process(_delta: float) -> void:
-	if (
-		is_instance_valid(target)
-		and (global_position != cached_position or target.global_position != cached_target_position)
-	):
-		var up := global_basis.y
-		if up.cross(target.global_position).length_squared() < 0.001:
-			up = global_basis.x
-		look_at(target.global_position, up)
-		scale.z = max(0.001, global_position.distance_to(target.global_position) - SCALE_BUFFER)
-		cached_target_position = target.global_position
-		cached_position = global_position

src/util/editor_arrow/editor_arrow.gd.uid

@@ -1 +0,0 @@
-uid://civv6xocvw6gp

src/util/editor_arrow/editor_arrow.gd~

@@ -1,12 +0,0 @@
-@tool
-class_name EditorArrow extends MeshInstance3D
-
-@export var target: Node3D
-
-
-func _process(_delta: float) -> void:
-	if is_instance_valid(target):
-		look_at(target.global_position, global_basis.y)
-		scale.z = global_position.distance_to(target.global_position)
-	else:
-		queue_free()

src/util/editor_arrow/editor_arrow.tscn

@@ -1,14 +0,0 @@
-[gd_scene load_steps=4 format=3 uid="uid://ghdsr1b4hpr8"]
-
-[ext_resource type="ArrayMesh" uid="uid://bgrutdse8bl8b" path="res://assets/props/arrow/arrow.obj" id="1_a3lat"]
-[ext_resource type="Script" uid="uid://civv6xocvw6gp" path="res://src/util/editor_arrow/editor_arrow.gd" id="2_yk3bx"]
-
-[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_yk3bx"]
-transparency = 1
-shading_mode = 0
-albedo_color = Color(0, 1, 1, 0.501961)
-
-[node name="EditorArrow" type="MeshInstance3D"]
-mesh = ExtResource("1_a3lat")
-surface_material_override/0 = SubResource("StandardMaterial3D_yk3bx")
-script = ExtResource("2_yk3bx")

src/world/mechanics/relay/gunk_relay.gd

@@ -11,24 +11,21 @@ signal pulsed
 const MAX_RUMBLE := 0.01
 const MAX_QUAKE := 0.2
 
+const EDITOR_ARROW_COLOR := Color.CYAN
+const EDITOR_ARROW_SIZE := 0.05
+
 @export_category("Editor Tools")
 @export var quick_connect_to: SignalNode:
 	set = _editor_connect
 
-@export_category("Game Scenes")
-@export var editor_arrow_scene: PackedScene
-
 var _busy := false
 
-var _editor_arrows: Dictionary[SignalNode, EditorArrow] = {}
-
 @onready var rumbler_3d: Rumbler3D = %Rumbler3D
 @onready var quaker: Quaker = %Quaker
 
 @onready var animation_player: AnimationPlayer = %AnimationPlayer
 @onready var trigger_delay: Timer = %TriggerDelay
 @onready var pulse_delay: Timer = %PulseDelay
-@onready var editor_connections: Node3D = %EditorConnections
 
 
 ## Trigger this relay.
@@ -97,15 +94,13 @@ func _process(delta: float) -> void:
 	# Check connections
 	for conn: Dictionary in triggered.get_connections():
 		var callable: Callable = conn.get("callable")
-		if callable and callable.get_object() is SignalNode:
-			var target: SignalNode = callable.get_object()
-			if target != self and not target in _editor_arrows:
-				var instance: EditorArrow = editor_arrow_scene.instantiate()
-				instance.target = target
-				editor_connections.add_child(instance)
-				_editor_arrows[target] = instance
-
-	for target: SignalNode in _editor_arrows.keys():
-		if not is_instance_valid(target):
-			_editor_arrows[target].queue_free()
-			_editor_arrows.erase(target)
+		if callable:
+			var target := callable.get_object() as SignalNode
+			if target and target != self:
+				DebugDraw3D.draw_arrow(
+					global_position,
+					target.global_position.move_toward(global_position, 0.1),
+					EDITOR_ARROW_COLOR,
+					EDITOR_ARROW_SIZE,
+					true
+				)

src/world/mechanics/relay/gunk_relay.tscn

@@ -1,8 +1,7 @@
-[gd_scene load_steps=13 format=3 uid="uid://bttust5ohud8e"]
+[gd_scene load_steps=12 format=3 uid="uid://bttust5ohud8e"]
 
 [ext_resource type="Script" uid="uid://1oup50bp0pwd" path="res://src/world/mechanics/relay/gunk_relay.gd" id="1_rdv5j"]
 [ext_resource type="Script" uid="uid://bukihqt1lybnx" path="res://src/util/frame_skipper.gd" id="2_ipm58"]
-[ext_resource type="PackedScene" uid="uid://ghdsr1b4hpr8" path="res://src/util/editor_arrow/editor_arrow.tscn" id="2_nfkbq"]
 [ext_resource type="Script" uid="uid://b274q7uvn0cvp" path="res://src/ui/rumbler_3d.gd" id="3_mb114"]
 [ext_resource type="Script" uid="uid://ccs67guidw4w4" path="res://src/ui/quaker.gd" id="5_peqs8"]
 
@@ -115,7 +114,6 @@ _data = {
 collision_layer = 36
 collision_mask = 0
 script = ExtResource("1_rdv5j")
-editor_arrow_scene = ExtResource("2_nfkbq")
 value = 800.0
 splatter_scale = 0.2
 
@@ -160,8 +158,5 @@ libraries = {
 }
 speed_scale = 4.0
 
-[node name="EditorConnections" type="Node3D" parent="."]
-unique_name_in_owner = true
-
 [connection signal="timeout" from="TriggerDelay" to="." method="_on_trigger_delay_timeout"]
 [connection signal="timeout" from="PulseDelay" to="." method="_on_pulse_delay_timeout"]