From: "cybjer" <cybjer@infonie.fr>
To: <ml@qoole.com>
Reply-To: ml@qoole.com
Date: Sun, 19 Apr 1998 02:14:33 +0200
Subject: Re: PRT files

OKayyyy! i didn t know about the portals i was wondering what it was...by
the way what is a portalkluster then?

-----Message d'origine-----
De : jaimi <jaimi@alt.net>
À : ml@qoole.com <ml@qoole.com>
Date : samedi 18 avril 1998 05:42
Objet : Re: PRT files


>Hey nick, you got it right.  The portals connect the different
>nodes (which are convex empty spaces). For each node,
>Vis uses the portals to determine which nodes can be seen from
>there.
>
>-----Original Message-----
>From: nick <mach_zero@mail.geocities.com>
>
>ok, this is my understanding - it may be completely wrong, but hey,
>someone'll pick me up...
>when qbsp does its magic, it makes a 'list' of portals (hence .prt)
>which are empty spaces in the level (ie parts where you can move
>around in, not the void, and not walls)
>vis gets this list and figures out which bits of the level can be
>seen from each of these portals, and tries to cut down the visible
>portals as much as possible (on -level4 anyway).
>so basically its just for vising purposes.
>note that a .prt file won't be generated if the level has a leak...
>
>hope this helps,
>nick
>
>
>