turanszkij/WickedEngine — reverse-engineered prompt

Build me an open source 3D engine with a desktop editor, similar in spirit to Wicked Engine. I want it to be useful both as a standalone scene editor and as a C++ framework people can use for their own graphics projects.

The editor should let users open and edit 3D scenes, import common model formats like glTF and FBX, move objects around, preview lighting and materials, play animations, test camera movement, and run simple Lua scripts. The engine should support modern real time graphics with PBR materials, shadows, post processing, audio, input, basic physics, and ray tracing when the hardware supports it.

Please include a few sample projects, a simple starter template, and clear build instructions for Windows, Linux, and Mac. Make it feel like a real usable engine rather than just a rendering demo, with clean docs for both C++ and scripting. Look up current docs online if you need to.