Runtime Debug Tools for Godot

A proof-of-concept Godot addon that attempts to extend and improve the runtime debugging experience.

Features

Works with both 2D and 3D scenes.
Debug camera. A simple in-game debug camera for navigating around the live scene. This somewhat mimics the in-editor camera experience.
In-game object picker. While using the debug camera, clicking the mouse will select the object under the mouse, highlighting it with a visible gizmo in the runtime and selecting the object in the Godot Editor remote tree inspector.
Editor object picker synchronised with the running application. Selecting a node in the Godot Editor, will visually select it in the runtime debug view with a visible gizmo.
Optionally, turning on 2D or 3D Debug mode pauses the running game. This makes debugging easier, and also prevents running game code from interfering with debug controls.
Runtime toggling of debug features. The remote inspector popup menu exposes various debug visualisation options. Including:
- Wireframe mode.
- Collision shapes.

Download from the Godot Asset Library.
Import the plugin into your Godot project.
Enable the plugin in your project settings.
When the game is running click on the RDT button in the toolbar and select '2D' or '3D' debugging.

One of the features of this tool is to synchronise the selected item in the 'remote scene tree' with the running game. In order to do that, the remote scene tree needs to be open, otherwise you'll see a warning "Node not found. Please check the remote tab is open". There are two ways of doing this:
1. Every time you run the game, select the 'Remote' tab in the scene tree.
2. Automate 1 so the remote scene is selected every time you run the game. Go to Editor Settings, and set debugger/auto_switch_to_remote_scene_tree to true
3D object picking uses physics meshes, as well as rendered MeshInstances. This has the benefit of being accurate and working with all rendered assets without requiring any scene modifications; however triangle picking may be slow in large/complex scenes.
2D object picking is currently limited to sprites and UI controls.
Some features, such as selecting nodes in the editor scene tree, and toggling collision meshes, rely on undocumented Godot features.
This is just a proof of concept. The hope is that some of these features might eventually appear in core Godot as first class features.