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Implementation of "2.5D" line-segment-sector 3d graphics engine a la Duke Nukem 3D / DOOM et al. With portals for visibility determination. Texture mapped etc using plain HTML5 only.

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Pseudo-3D / '2.5D' / Doom / BUILD style engine

Real 3d engine is too easy (Threejs etc). Inside this oldschool type of engine, there isn't really such a concept as the polygon/triangle. Instead the world is made of extruded lines, tricks, hacks, and texture mapping with horizontal/vert strips. Code is pure html5 js, no additional libraries/extensions/apis etc.

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Implementation of "2.5D" line-segment-sector 3d graphics engine a la Duke Nukem 3D / DOOM et al. With portals for visibility determination. Texture mapped etc using plain HTML5 only.

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