Wiesel Engine

Wiesel is a cross-platform game engine built with C++ and Vulkan, featuring a deferred rendering pipeline, C# scripting, and a full-featured editor.

Features

• Deferred PBR rendering with render graph, cascaded shadow maps, ray-traced shadows, SSAO, bloom, motion blur, TAA/FXAA, IBL, and forward transparency with IBL support
• Jolt Physics with multi-threaded simulation, box/sphere/capsule/mesh/heightfield colliders, baked mesh collider assets, triggers, one-way platforms, raycasting, and overlap queries
• C# scripting via Mono with hot-reload, lifecycle callbacks, collision/trigger events, and exception handling
• Editor with scene hierarchy, component inspector, asset browser, prefabs, play/stop with snapshot restore, gizmos, GPU memory stats, and developer console
• Audio via miniaudio with 3D spatial sound, reverb zones, and volume buses
• Skeletal animation with state machine, crossfading, and transition conditions
• Sprite rendering with atlas support, frame animation, and sprite sheet slicing
• UI system with RmlUi integration, canvas layout, anchors/pivots, text rendering, buttons, text input, gamepad navigation, and data binding from C#
• Input system with data-driven contexts, multi-player support, gamepad mapping
• Asset system with VFS, stable handles via .meta files, unified async loading pipeline, thread-safe asset manager, texture quality with VRAM savings, and .pak archive support
• Game export with asset packing, script compilation, and standalone runtime
• Left-handed coordinate system (+Z forward)

Building

Requirements

• C++23 compiler (MSVC, GCC, or Clang)
• CMake 3.24+
• Vulkan SDK
• Mono runtime

Build

git clone --recursive https://github.com/teoncreative/wiesel.git
cd wiesel
cmake -B build
cmake --build build

Sample Projects

Sample projects are maintained in a separate repository:

https://github.com/teoncreative/wiesel-samples

Project Structure

wiesel/          Engine library (headers, source, shaders, C# scripts)
editor/          Editor application
runtime/         Standalone game runtime
vendor/          Third-party dependencies (git submodules)
libs/            Internal libraries (wpak, monolib)
tools/           Asset packer and build tools

Third-Party Libraries

Vulkan, Jolt Physics, SDL3 / GLFW, Dear ImGui, entt, Assimp, FreeType, miniaudio, glslang, VMA, nlohmann/json, Tracy, Mono, stb, Recast Navigation

License

Apache License 2.0