I've just implemented Tetris in PostScript, pushing the limits of a document-processing language to run a realtime game. It works in GhostView on macOS.

* 600 lines / 10 KB * 69 different PostScript operators, no external libs * Realtime input, direct drop, increasing speed levels * 7-tetrimino random bags * Nintendo-style scoring and high score tracking

This project builds on my earlier experiments with PSChess and PSSokoban.

It show that PostScript is a lightweight, expressive, and surprisingly interactive programming language. A perfect tool for hacking on unexpected platforms.

This is very cool! To run this on a modern Linux, install Ghostscript and run it like this:

    gs -dNOSAFER tetris.ps

In another terminal in the same working directory, run the command it gives in the source file:

    stty raw -echo; cat >> t.txt

Keep the second terminal focused for your keyboard inputs. I don't know if there's an elegant way to quit, but I just close the Ghostscript window and kill the second terminal.

Anyone remember NeWS - Network extensible Window System? It was built in Postscript.

http://dev.rsnous.com/dewdrop/executive/

It's actually a pretty cool language, a forthy lisp/lispy forth.

Somehow, this reminds me of Tetris in a PDF: https://news.ycombinator.com/item?id=42645218

In two weeks we'll see "Doom in PostScript" pop on the homepage.

This is pretty neet. Tried running it with ghostscript under Linux and it crashes pretty much after the first tetromino falls a square.

Is there any PS web reader that can run it?

(WASM or otherwise)