Lily

A C++ game engine built for learning — following the architecture of a real engine from first principles.

Stack: C++17 · OpenGL · GLFW · Dear ImGui · spdlog · glm · Windows only

Building

Requires Visual Studio 2022 and Premake5.

# Generate project files
premake5 vs2022

# Build (or open Lily.sln in Visual Studio)
msbuild Lily.sln /p:Configuration=Debug /p:Platform=x64

Output: bin/Debug-windows-x86_64/Sandbox/Sandbox.exe

Project Structure

Project	Role
Lily	Core engine — compiled as a DLL
Sandbox	Test application — links against Lily.dll

See ARCHITECTURE.md for a full explanation of how the systems fit together and why they're designed the way they are. See ROADMAP.md for the development plan phase by phase.