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Re: Marathon vs. Doom Engine Specifics
Posted By: vonzwietrachtDate: 8/7/13 4:01 p.m.

In Response To: Re: Marathon vs. Doom Engine Specifics (Hopper)

: : How are things like this defined in marathon maps? I mean, if true bridges
: are impossible, how is room over room like this possible?

: Marathon's engine is portal-based. Each line of a polygon is either solid, or
: a portal connection to another polygon. The renderer chokes if it tries to
: draw more than one open space along a vertical line, such as the area
: above and below a bridge, but that's more a rendering limitation rather
: than a map-format limitation. As long as you can't see vertically
: overlapping spaces simultaneously, you can actually have them exist.

: A fully specified Marathon coordinate is not (x,y) or even (x,y,z), but
: (x,y,z,polygon). As the player (or monster or projectile) moves across
: portal boundaries, it updates the polygon coordinate. Within the maps,
: polygons can overlap not just on top of each other, but fully in (x,y,z)
: space, which leads to "5-D Space" as seen in the eponymous map,
: or places like the southeast hall in Couch Fishing. There, you see either
: the hall or the sunken room, but not both within the same vertical space
: so it's OK.

Thanks so much for this. Seriously, this is literally what I was trying to remember about the A1 engine when I started this thread.

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Pre-2004 Posts

Replies:

Marathon vs. Doom Engine SpecificsVonZwietracht 8/6/13 2:44 p.m.
     Re: Marathon vs. Doom Engine SpecificsDocument 8/6/13 3:04 p.m.
           Re: Marathon vs. Doom Engine SpecificsVonZwietracht 8/6/13 3:14 p.m.
                 Re: Marathon vs. Doom Engine Specificstreellama 8/7/13 3:28 a.m.
                       Re: Marathon vs. Doom Engine SpecificsDocument 8/7/13 7:26 a.m.
                             Re: Marathon vs. Doom Engine Specificstreellama 8/7/13 8:01 a.m.
                       Re: Marathon vs. Doom Engine SpecificsAntarctico 8/7/13 10:23 a.m.
                             Re: Marathon vs. Doom Engine Specificstreellama 8/7/13 11:28 a.m.
                                   Re: Marathon vs. Doom Engine SpecificsAntarctico 8/7/13 12:14 p.m.
                                         Re: Marathon vs. Doom Engine SpecificsHopper 8/7/13 2:10 p.m.
                                               What About Trojan? (was: Marathon vs. Doom...)Antarctico 8/7/13 2:28 p.m.
                                                     Re: What About Trojan? (was: Marathon vs. Doom...)Hopper 8/7/13 4:34 p.m.
                                                           Re: What About Trojan? (was: Marathon vs. Doom...)Antarctico 8/7/13 4:52 p.m.
                                                           Re: What About Trojan? (was: Marathon vs. Doom...)Antarctico 8/7/13 5:41 p.m.
                                         Re: Marathon vs. Doom Engine Specificstreellama 8/7/13 3:11 p.m.
                                               Re: Marathon vs. Doom Engine SpecificsAntarctico 8/7/13 5:25 p.m.
           Re: Marathon vs. Doom Engine Specificsvonzwietracht 8/7/13 2:49 p.m.
                 Re: Marathon vs. Doom Engine SpecificsHopper 8/7/13 3:41 p.m.
                       Re: Marathon vs. Doom Engine Specificsvonzwietracht 8/7/13 4:01 p.m.
     Re: Marathon vs. Doom Engine SpecificsPresident People 8/6/13 3:13 p.m.
           Re: Marathon vs. Doom Engine SpecificsVonZwietracht 8/6/13 3:23 p.m.
           Re: Marathon vs. Doom Engine Specificstreellama 8/7/13 3:30 a.m.

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Pre-2004 Posts

 

 

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