Script to visualize connections

addons/ButtonLink/DoorButtonVisualizer.cs

@@ -0,0 +1,33 @@
+using Godot;
+
+[Tool]
+public partial class DoorButtonVisualizer : Node2D
+{
+    [Export] public NodePath TargetPath; // Expose the Target NodePath in the editor
+
+    public override void _Draw()
+    {
+        if (TargetPath == null || !Engine.IsEditorHint())
+            return;
+
+        // Get the target node
+        Node targetNode = GetNodeOrNull(TargetPath);
+        if (targetNode == null || !(targetNode is Node2D target))
+            return;
+
+        // Draw a line to the target
+        Vector2 start = GlobalPosition;
+        Vector2 end = target.GlobalPosition;
+
+        DrawLine(ToLocal(start), ToLocal(end), Colors.Green, 2);
+    }
+    
+    public override void _Process(double delta)
+    {
+        // Update the visualization in the editor
+        if (Engine.IsEditorHint())
+        {
+            QueueRedraw();
+        }
+    }
+}