🧱 Engine

A small C++20 OpenGL framework — window, input, shaders, textures, cameras and an ImGui HUD — shared by my game projects.

It is not a standalone engine with an editor: it is a static library with the boilerplate every OpenGL project needs, so the games built on it (ShooterGame, LogicalSystemRemaster, MinecraftServerCore) only contain game code.

✨ What's inside

Header	What it does
Window.h	GLFW window + OpenGL context via glad: vsync, resize tracking, title, icon, logging setup (plog)
Input.h	Keyboard, mouse buttons, cursor, scroll and drag state; raw mouse mode, clipboard; chains existing GLFW callbacks
Shader.h	Loads and links shader programs, cached uniform lookup, upload() overloads for scalars, glm vectors and matrices, uniform blocks
Texture.h	Image loading via stb, mipmapped linear filtering by default, nearest() for pixel art
Camera2D.h / Camera3D.h	Orthographic camera with zoom (including zoom-at-cursor) and a perspective camera with FOV control
HUD.h	Dear ImGui frame setup for GLFW + OpenGL 3
Animation.h	Timed float animation between two values, clamped to a range
io/Filesystem.h	Read/write files and strings, zlib compress/decompress, reading assets embedded as Windows resources (readResource*)
network/	Winsock UDP socket wrapper, a byte buffer and LEB128 VarInts (Windows only)

🛠️ Dependencies

GLFW, glad, glm, Dear ImGui, stb, nlohmann/json, plog, zlib — all declared in vcpkg.json.

🔨 Building

Requirements: CMake ≥ 3.25, a C++20 compiler and vcpkg.

git clone https://github.com/kewldan/Engine.git
cd Engine

cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=<vcpkg root>/scripts/buildsystems/vcpkg.cmake
cmake --build build

The usual way to use it is from a game: the projects above look for the library in ../Engine (override with -DENGINE_DIR=<path>) and fetch it from GitHub when it is missing.

The network/ helpers are Winsock-only and are left out of the build on other platforms.

📄 License

MIT