Sauce3D

Sauce3D was a custom game engine I worked on from mid-2010 to 2019. Its main purpose was to help me understand how a modern game engine is constructed, and many of its design decisions were inspired by engines and libraries such as Unreal Engine, libGDX and Torque3D. I put great emphasis on ease of use for the programmer while striving for excellent run-time performance.

Sauce3D is written in C++. It uses OpenGL 3.2 for rendering and SDL for window management and communication with the OS.

Engine

• Automatic asset management, ensuring that:
  • Assets are easily available to all game classes.
  • Assets are only loaded once they are needed.
• Logging macros that can dump detailed information.
• Scene management that automatically propagates events through a scene hierarchy.
• Input handling for keyboard, mouse and gamepads.

Graphics

• Easy-to-use primitive rendering (indexed and non-indexed).
• .obj mesh loading.
• Sprite batching to reduce draw calls.
• Bitmap font rendering through BMFont.
• Textures and render targets supporting a variety of formats, including integer and double precision.
• Multiple render targets.
• Automatic texture atlas generation.
• Vertex, fragment and geometry shaders.

Physics

• A custom rigid body dynamics system that supports up to 1,500 bodies while maintaining 30 FPS on a 2.8GHz Intel i7.

UI

• Resizable bitmap buttons.
• Modal dialog boxes.
• Single-line input fields.
• Cross-fade transitions.

Networking

Networking is not part of the engine, but it can easily be added with a library such as RakNet, as I did in Overworld.