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Whistler

23-07-2004 01:34

easy way to find the normal vector of the ladder

Code:

g_engfuncs.pfnTraceModel(m_vecWptOrigin, VecBModelOrigin(pLadder), point_hull, pLadder, &tr);



if (tr.flFraction < 1.0)

   // tr.vecPlaneNormal is the normal vector of the ladder now

m_vecWptOrigin is the origin of the waypoint, which is always "outside" the ladder.

pfnTraceModel() means a tracehull which is only blocked by the specified entity ("pLadder").

Pierre-Marie Baty

23-07-2004 16:15

Re: easy way to find the normal vector of the ladder

This is interesting indeed, although I never had problems determining the normal vector of a ladder using a normal TraceLine as far as I remember ???

Whistler

24-07-2004 01:17

Re: easy way to find the normal vector of the ladder

if you are using a normal traceline, it's usually not the ladder but the wall behind the ladder that blocks the traceline. and sometimes you will have trouble with this in ladders which don't have a wall behind it (like that one in cs_assault).

sPlOrYgOn

24-07-2004 01:32

Re: easy way to find the normal vector of the ladder

but if you have it like that it'll only hit the ladder and what if it hits the ladder from the wrong side?

Whistler

24-07-2004 01:55

Re: easy way to find the normal vector of the ladder

the start position is the waypoint origin, which is always at the right side unless the waypointer is bad one :)

sPlOrYgOn

24-07-2004 02:03

Re: easy way to find the normal vector of the ladder

well if that were true then there isn't any problem using traceline even if it hit the thing in the back..

Cheeseh

24-07-2004 13:19

Re: easy way to find the normal vector of the ladder

wouldn't a tracehull find the ladder?

Whistler

24-07-2004 13:45

Re: easy way to find the normal vector of the ladder

Quote:

Originally Posted by Cheeseh

wouldn't a tracehull find the ladder?

Yes, I'm sure ordinary tracehull with "head_hull" will find the ladder. but the "point_hull" won't find it.

Pierre-Marie Baty

25-07-2004 23:31

Re: easy way to find the normal vector of the ladder

umm yes, my bad.. TraceHull, that's what I meant in my post :)

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