Path: news.cs.au.dk!news.net.uni-c.dk!uninett.no!news-feed.ifi.uio.no!ifi.uio.no!not-for-mail
From: Alf-Ivar Holm <alfh@ifi.uio.no>
Newsgroups: comp.lang.beta
Subject: Re: tron - X11 multi-player game (Long)
Date: 01 Aug 2000 18:12:28 +0200
Organization: The Department of Informatics, University of Oslo, Norway
Lines: 24
Message-ID: <wogu2d5rmdv.fsf@naglfar.ifi.uio.no>
References: <wog8zz4cm60.fsf@naglfar.ifi.uio.no> <8cccd8$dr4l4$1@xinwen.cs.au.dk>
NNTP-Posting-Host: naglfar.ifi.uio.no
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: maud.ifi.uio.no 965146348 4024 129.240.64.54 (1 Aug 2000 16:12:29 GMT)
X-Complaints-To: abuse@ifi.uio.no
NNTP-Posting-Date: 1 Aug 2000 16:12:29 GMT
User-Agent: Gnus/5.0807 (Gnus v5.8.7) Emacs/20.7
Xref: news.cs.au.dk comp.lang.beta:12538

The other day I was discussing the "AutoInit" pattern that I used in
the tron game.  Someone else posted here some years ago, but I've lost
the reference.  Anyone remember who posted that magic code?  Must have
been some hardcore Beta hacker!  (Hmmm, I didn't even mention that
I've stolen it in the program either.  Sorry, someone!)  Anyway, I
took a look at tron.bet again and I saw there was a small feature/bug
that may be fixed: The "Enumeration" pattern don't need to be a
sub-pattern of "AutoInit", only "value" need to be.  The "Enumeration"
pattern should therefore look like this:

Enumeration: 
(# (* Enumeration *)
   nextValue: @integer;
   value: AutoInit
   (# v:@integer;
      init::(# do nextValue->v; nextValue+1->nextValue #);
   exit v
   #);
#);

Note: This doesn't change the behaviour of anything, just makes the
program a little less unreadable.

        Affi