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Show HN: Fio: 3D World editor/game engine – inspired by Radiant and Hammer

A liminal brush-based CSG editor and game engine with unified renderer

inspired by Radiant and Worldcraft/Hammer (from the old times!)

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  • Custom OpenGL/PyGame engine supports immediate "drop-in and play" (like CryEngine Editor)
  • Compact and lightweight (target: Snapdragon 8CX, OpenGL 3.3)
  • Real-time lighting with (in development) stencil shadows - no need for pre-baked compilation
  • Volumetric fog, glass & water shaders with configurable surface parms
  • Entity I/O system inspired by Half-Life 2 (logic, triggers, lights, speakers)
  • Terrain generation
  • OBJ model support
  • json level format with magic number fingerprint
  • nodraw isn't drawn - just like Quake3

🗎 Fully modular and open source (MIT License)


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  • PyQt5, numpy, Pillow, PyOpenGL, pygame, PyGLM


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in memory of David Lynch

vc