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afainer
cleven
Common Lisp2015–2015
afainer / cleven

cleven

Cleven is an experimental game engine with volume graphics written in Common Lisp.

2Distinct people
2Mentions
0Explicit recommenders
48GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Cleven is an experimental game engine with volume graphics written in Common Lisp.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by hour2 dated mentions

Observed mentions: 2015-11-30 22:58:57 UTC to 2015-12-01 04:03:58 UTC.

012015-11-30 22:00:00 UTC to 2015-11-30 23:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsNov 30, 22:002015-11-30 23:00:00 UTC to 2015-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-12-01 00:00:00 UTC to 2015-12-01 01:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-12-01 01:00:00 UTC to 2015-12-01 02:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsDec 1, 01:002015-12-01 02:00:00 UTC to 2015-12-01 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-12-01 03:00:00 UTC to 2015-12-01 04:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-12-01 04:00:00 UTC to 2015-12-01 05:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsDec 1, 04:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Nov 30, 22:002015-11-30 22:00:00 UTC2015-11-30 23:00:00 UTC110
Nov 30, 23:002015-11-30 23:00:00 UTC2015-12-01 00:00:00 UTC000
Dec 1, 00:002015-12-01 00:00:00 UTC2015-12-01 01:00:00 UTC000
Dec 1, 01:002015-12-01 01:00:00 UTC2015-12-01 02:00:00 UTC000
Dec 1, 02:002015-12-01 02:00:00 UTC2015-12-01 03:00:00 UTC000
Dec 1, 03:002015-12-01 03:00:00 UTC2015-12-01 04:00:00 UTC000
Dec 1, 04:002015-12-01 04:00:00 UTC2015-12-01 05:00:00 UTC101

What Hacker News says

2 sources
Here's how to get started with Cleven on OS X: brew install rlwrap brew install sdl2 brew install sbcl wget https://beta.quicklisp.org/quicklisp.lisp shasum -a 256 quicklisp.lisp # c.f. https://www.quicklisp.org/beta/ sbcl Within SBCL, run the following: (load "quicklisp.lisp") (quicklisp-quickstart:install) (ql:add-to-init-file) Press enter. Exit SBCL by running: (exit) Then run cd ~/quicklisp/local-projects/ git clone https://github.com/afainer/cleven.git cd cleven rlwrap sbcl Inside SBCL, run: (ql:quickload "sdl2") (ql:quickload "cleven") (load "sandbox.lisp") (in-package #:sandbox) (run-sandbox) It pops up a window! But I ran into an error at this point: debugger invoked on a SIMPLE-ERROR in thread #<THREAD "Render thread" RUNNING {1006D70EF3}>: Shader compilation failed. The info
Read the rest
log is: ERROR: 0:24: '' : version '330' is not supported I tried switching computers, but I got the same error. I'm running an AMD Radeon R9 M370X on Yosemite. Unfortunately I'll have to stop here, since I'm a bit pressed for time. This project is way cool, so I'll look into it more later. If you have any ideas how to debug it further, please let me know here or by email. Those steps might work for other people on OS X, though. There's probably some kind of driver issue on my end. (Ah, the life of gamedev...) Edit: Created issue https://github.com/afainer/cleven/issues/1
In Show HN: Cleven – a Common Lisp experimental volume graphics game engine

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