Hork Engine

Game engine

Developed for Quake-style 3D games, but it is possible to create games of other genres.

Samples can be found here:
https://github.com/Hork-Engine/Hork-Samples

Old version of the engine:
https://github.com/Hork-Engine/Hork-Source-Archive

Features

Technical information

• C++
• Windows7+, Linux
• 64 bit only
• Data oriented design
• With no exceptions

GameObject-Component based world architecture

• The world has a modular structure - it's easy to add new features
• Composition instead of inheritance, objects are extended by different components
• Handles instead of pointers
• ECS (Entity-Component-System) can be easily integrated into an existing model
• Asynchronous loading of resources

Rendering

• Forward+ clustered renderer based on OpenGL4.5 core
• Modern Framegraph architecture
• Material graph with automatic shader generation, material instancing
• Physically Based Rendering
• Antialiasing (FXAA, SMAA), specular antialiasing (Toksvig, vMF baked to Roughness)
• Screen space reflections
• Postprocessing effects (Bloom, Dynamic exposure, Tonemapping, Color grading LUT/procedural, Vegnette)
• Motion Blur (per-object, per-bone)
• Horizon-based Ambient Occlusion (HBAO)
• Tessellation Flat/PN with displacement mapping
• Parallax mapping

Physics

• Simulation of rigid bodies, collision detection, triggers, character controller, water buoyancy calculations.

Audio

• 2D and spatialized 3D / HRTF
• Unlimited audio sources
• OGG, FLAC, MP3, WAV
• Audio resampling

Input system

• Keyboard, Mouse, Game controllers
• Mapping to Axes and Actions

Animation

• Skeletal animation, inverse kinematics, sockets

Navigation

• Tiled navigation mesh
• Path finding
• Off-mesh links
• Dynamic obstacles

UI

• Customizable UI
• Antialiased vector rendering, HTML5 - like canvas API
• TTF fonts

Asset processing

• All types of block compression and decompression: BC1-7
• Image resampling
• sRGB / Premultiplied alpha aware
• WEBP, PNG, PSD, PNM, PIC, JPG, BMP, TGA, HDR, EXR
• 3D formats: GLTF 2.0, OBJ
• IES profiles
• SVG rasterization
• Various geometry processing: convex decomposition, triangulation, polygon clipping

Used third-party libraries

• bc7enc
• bcdec
• cgltf
• Clipper
• EASTL
• FastLZ
• fast_float
• fast_obj
• {fmt}
• GLEW
• glutess
• HACD
• Jolt Physics
• libwebp
• lunasvg (freetype, plutovg as part of lunasvg)
• MikkTSpace
• mimalloc
• miniaudio
• Miniz
• muFFT
• nanovg
• Optick
• ozz-animation
• Recast & Detour
• SDL2
• stb
• tinyexr
• V-HACD
• FXAA
• SMAA
• half.c

See details.

Contributing

Contributions are very welcome.

Airplane minigame demo