Doomsday Engine

Various bugs on Zclipping, cross posted from the forum as requested:
http://www.dengine.net/forums/viewtopic.php?f=24&t=1445&p=9463&#p9463

Bug 1: the Doom Guy mobjs passmobj flag over-rules the zclip cvar, meaning setting it to 0 has no effect on him. The passmobj flag was added to the doom guy mobj in dday, when the doom plugin got heretic's mobj flags added to it previously, Doom Guy did not have this flag.

Bug 2: if Doom Guy falls on a scenery mobj (possible if Zclip is set to 1 or he has the passmobj flag), he falls through it, instead of landing on top of it. He then becomes stuck and unable to move. If Doom Guy lands on a monster, he doesn’t fall through them.

Heretic seems not to have this bug.

Bug 3: The Dday exclusive 3d movement option (under gameplay menu), which allows flying bad guys to both fly over other mobjs ala Vanilla Heretic and also raise over other mobjs (not something flyers could do in vanilla Heretic) doesn't work right in Doom. In heretic, it appears to work fine.

Bug 4: In Heretic, if you stand on a mobj with a hit box that is partially embedded in a wall, you can clip through the wall up to the edge of the mobjs radius.

This bug existed in HeXen in 1.9.7 but was fixed in the candidate phase for that release.

Unrelated note; the various Zclip options are a bit of a mess in Doom:

In Doom, I'd expect setting Zclip to 1, to also affect monsters, but it only affects the player. I have to turn on 3d movement to get Zclip 1 like behaviour for monsters, which also means I have to accept flying monsters also raising over each other.

It would be cool if Zclip 0/1 imitated Vanilla Doom and Vanilla Heretic respectively. The 3D movement feature would then simply allow flying bad guys to raise over each other (call it Zclip 2 if you will)."

Labels: Zclipping