Irritating CSG bug

GiGaBiTe

I've had this problem before, but I have never found a way to fix it. Basically, there's this phantom triangular player clip that extends out from a world brush plane that doesn't want to go away. There are no illegal or malformed brushes so I don't know what to make of it. Here's a crappy photoshop image to illustrate the problem.

<img src="http://img408.imageshack.us/img408/860/csgbugol9.jpg" border="0" class="linked-image" />

Basically if you crouch, you can go under the triangle and it's like being in a small vent, but if you try to walk up to the ledge, you go up the ledge like there is a slope rising from the floor to the ledge which is not the desired behavior.

WatchMaker

Hmm.. the second problem sounds just like the step size.. but that is a pretty weird glitch. Don't think I've ever had it myself. Try remaking the brush purely with vertex editor?

GiGaBiTe

<!--quoteo(post=1648337:date=Sep 9 2007, 02:13 PM:name=ZeroFate)--><div class='quotetop'>QUOTE(ZeroFate @ Sep 9 2007, 02:13 PM) <a href="index.php?act=findpost&pid=1648337"><{POST_SNAPBACK}></a></div><div class='quotemain'><!--quotec-->Hmm.. the second problem sounds just like the step size.. but that is a pretty weird glitch. Don't think I've ever had it myself. Try remaking the brush purely with vertex editor?<!--QuoteEnd--></div><!--QuoteEEnd-->

Well you should be able to slide along the wall like a regular wall, not go up an invisible clip thing like a ramp. There is one alternative that is rather hacky and I didn't want to use, but I guess I'll have to try it since I can't figure out any other way to fix it.

venomus

Odd, I don't notice that on the original version. What cliptype are you using? The map was originally compiled on -smallest iirc.

GiGaBiTe

I fixed the problem, there was a typo in the cliptype command line argument. It seems to work when -cliptype precise is used.

carioca

maybe a hint brush will aid u, surround that brush like to complete it to look like a cube in the top or put in the side where made the invisible leaf a clip brush, it will cut that face and the floor try extend the clip to against wall to not brreak so much polies.

your map arent over one of that green lines of the middle of that map that lines cut your map so keep that lines in the intersection of the map or will double the polies of the map.

BigD

Basically, precise should work (beware spelling! One batch compiler config had percise or soemthing IIRC...)

If you get weird errors like that, try the other cliptypes. Some can work better than others, depending on the application.

The other trick in that case would be to make sure that ledge is one brush. Eg:

\
|

inseatd of

\
-
|

if my horrible ascii art makes any sense. This technique can clear up a <i>lot</i> of clip hull errors (though it can be a <acronym title='Pain In The Butt, or something like that.'>PITA</acronym> a lot of the time.)