doom.c

FPS engine in C, combining:

• doom-style BSP collision and entity handling
• Duke Nukem1996-style sector/portal rendering designed for non-Euclidean level layouts, efficient traversal, and classic software-rendered visuals

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🧩 overview

• Doom-style BSP for spatial subdivision and collision detection. (log(n))
• Portal/sector-based rendering inspired by the build engine (Duke Nukem 3D).
• supports room-over-room layouts, recursive portal rendering, and advanced level connectivity.
• built-in C with minimal dependencies (SDL2).

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🎮 Screenshots

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features

• ✅ BSP-based collision and entity placement
• ✅ sector & portal rendering system
• ✅ support for room-over-room and recursive layouts
• ✅ software renderer using front-to-back portal traversal
• ✅ doom-like movement, physics, and entity management

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🛠️ Build & Run

Requirements

• SDL2
• C99-compatible compiler (GCC, Clang, MSVC)

Steps

brew install sdl2 sdl2_image
or
sudo apt install sdl2 sdl2_image
git clone https://github.com/youradrien/doom.c.git doom-nukem
cd doom-nukem
make re && ./doom assets/maps/bruh.txt