C++ game engine

What it is

I’m building a small 2D game engine from scratch in C++17, with raylib handling the window and rendering. The project is a way to learn how a game engine can be structured, starting with the entity-component-system (ECS) architecture.

What’s in the current build

The engine separates entity management, component storage, and systems. Entities use an ID and generation counter so recycled slots can be distinguished from stale references. A World ties these pieces together and lets systems query entities by their component types.

The demo has a movement system that updates entities with position and velocity components, then draws positioned entities in a raylib window. The project builds with CMake and fetches raylib 5.5 through CMake FetchContent.

Next steps

The entity-alive check is not implemented yet, and component data still uses hash maps. I plan to address those pieces before expanding the engine with input, resource management, collision, audio, scenes, and sprite rendering.