Newsletter 10: Add rg3d and rusty editor (#144)

* added rg3d-sound into libraries section

* add rusty-shooter game

* fixed links for rusty-shooter game

* added WIP mark for rusty-shooter game video

* added features list for rusty-shooter game

* added rg3d engine and rusty-editor

* added screenshots

* fixed paragraphs indentation

* Newsletter 10: rg3d: fmt tweaks

* Newsletter 10: rg3d: smaller images

Co-authored-by: Andrey Lesnikov <ozkriff@gmail.com>

Author: mrDIMAS

content/posts/newsletter-010/index.md

@@ -214,6 +214,49 @@ You can follow along for updates and release progress [here][updates].
 
 ## Library & Tooling Updates
 
+### [rg3d Engine][rg3d]
+
+![3rd person walking simulator](rg3d_3rd_person_example.jpg)
+
+[rg3d][rg3d] is a 3d game engine. It has gained a lot of new features:
+
+- Volumetric lights - lights now have configurable amount of light scattering
+  in volume which significantly improves light quality.
+- Multi-camera rendering - can be used to make split-screen games, add 
+  picture-in-picture features and so on.
+- Asynchronous resource loading
+- [Four new examples](https://github.com/mrDIMAS/rg3d/tree/master/examples)
+- Screen-space ambient occlusion (SSAO)
+- Directional lights for outdoor scenes, it still has no shadows yet.
+- Documentation improvements - still far from completion, but covers some basic
+  use cases.
+- Serialization improvements.
+- [rg3d-ui crate](https://github.com/mrDIMAS/rg3d-ui) improvements: added
+  docking manager, menu, file browser, tree view.
+- Editor - more about that below.
+
+[rg3d]: https://github.com/mrDIMAS/rg3d
+
+#### [rusty editor]
+
+![rusty editor](rusty_editor.jpg)
+
+[rusty editor] is a scene editor for rg3d engine, the goal is to make robust
+and easy-to-use editor which is able to load, modify, and save scenes in
+native engine format. The editor is based on rg3d engine, user interface
+is based on rg3d-ui crate which developing in parallel with editor. It is
+still in very early development phase, but it already have some basic
+features:
+
+- Undo/redo
+- Saving and loading of scenes.
+- Interaction modes (move, scale, rotate).
+- Node properties editor
+- World outliner (scene hierarchy editor).
+- And many other small stuff.
+
+[rusty editor]: https://github.com/mrDIMAS/rusty-editor
+
 ### [Goods]
 
 Asset management library that aims to be easy to use, flexible, extensible