Show HN: TTF-DOOM – A raycaster running inside TrueType font hinting

🧐 "TrueType Fonts as Unlikely Game Engines"

TrueType fonts contain a hidden virtual machine that can execute bytecode, making them Turing-complete and capable of running a raycasting engine, as demonstrated by TTF-DOOM, which uses font hinting to render a crude Wolfenstein-style view. This innovative use of font technology packs a surprising 6.5 KB of bytecode into 13 functions and 795 storage slots.

guid

https://news.ycombinator.com/item?id=47665685

source_url

https://github.com/4RH1T3CT0R7/ttf-doom

author_name

4RH1T3CT0R

id: 1565
uid: zgXKA
insdate: 2026-04-07 02:05:29
title: Show HN: TTF-DOOM – A raycaster running inside TrueType font hinting
additional: 🧐 "TrueType Fonts as Unlikely Game Engines"

TrueType fonts contain a hidden virtual machine that can execute bytecode, making them Turing-complete and capable of running a raycasting engine, as demonstrated by TTF-DOOM, which uses font hinting to render a crude Wolfenstein-style view. This innovative use of font technology packs a surprising 6.5 KB of bytecode into 13 functions and 795 storage slots.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=47665685
source_url: https://github.com/4RH1T3CT0R7/ttf-doom
updated:
image:
author_name: 4RH1T3CT0R
author_link:
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