RG3D

3D game engine written in Rust.

WARNING: Some places are semi-complete or just does not implemented yet, this engine is not in production-ready state yet.

Screenshots

These screenshots are from rusty-shooter which is a big demo for the engine.

What is done already?

• Window and OpenGL context.
• Core library (rg3d-core) with some handy data structures - object pool, vectors, matrices, etc.
• Scene graph with pivot, camera, mesh, light, particle system, sprite nodes.
• FBX Loader - both ASCII and binary. Note: Only 7100 - 7400 versions are supported!
• Advanced node-based UI with these widgets:
  • Border
  • Button
  • Canvas (layout panel)
  • Grid (layout panel)
  • Stack panel
  • Scroll bar
  • Scroll viewer
  • Scroll content presenter
  • Text
  • Text box
  • List box
  • Tab control
  • Window
• Fonts - TTF Loader (compound characters are not supported yet)
• Built-in save/load using object visitor - save/load state of engine in one call.
• Skinning
• Animation blending state machine - similar to Mecanim in Unity Engine.
• Animation retargetting - allows you to remap animation from one model to another.
• Automatic resource management
  • Texture
  • Models
  • Sound buffers
• Deferred shading
  • Point light
  • Spot light
  • Bump mapping
• A* pathfinder + Navmesh support.
• Particle systems with soft particles.
• Sounds - using rg3d-sound crate.
• Physics - using rg3d-physics crate.

Plans

• Simple editor - would be so nice to have, but until UI is not stabilized enough there is no point to try to write editor.
• Documentation - it is still incomplete because engine contstantly changing its API.

Dependencies

• glutin - window and OpenGL initialization
• image - texture loading
• lexical - fast text -> number parsing for ASCII FBX loader
• byteorder - read/write builtin rust types (u16, u32, f32, etc.)
• base64 - encode binary data for object visitor's text output
• inflate - to decompress binary FBX data
• rand - to generate random numbers in various places of the engine (mostly in particle systems)

Contributing

Contributions are very welcome!

Why Rust?

Previously I wrote my engine in C (DmitrysEngine), but at some point it become relatively hard to maintain it. I thought if it was hard to maintain for me, how hard it would be to use it correcly for newcomers? Initially I thought to port engine to modern C++, but C++ is not a silver bullet and won't guarantee memory safety. At my full-time job almost every day we fixing issues related to memory safety and threading bugs, I really tired of this and then I just remembered that Rust provides memory safety and safe concurrency. I've started to learning Rust and it was real pain in the ass at the first few weeks, I even thought to return back to C, but from some point I found ways of doing things without fighting with compiler... and engine started growing, and at some point I found that I crashed (because of segfault) only few times since start and only at unsafe code in OpenGL functions, that was very exciting!