From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Fri, 10 Mar 2006 02:31:42 +0000 (+0000)
Subject: fixed bullets-going-through-walls bug in q3bsp collision code, this was a really... 
X-Git-Tag: xonotic-v0.1.0preview~4232
X-Git-Url: http://de.git.xonotic.org/?a=commitdiff_plain;h=472197398fe654ff163fd52dccb00b35dafae79c;p=xonotic%2Fdarkplaces.git

fixed bullets-going-through-walls bug in q3bsp collision code, this was a really nasty bug in the midfrac calculations (it was calculating the midfrac for the partially clipped line segment and then acting as if that was a fraction of the complete line segment...  this caused many problems)


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@6084 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/model_brush.c b/model_brush.c
index 8ba4db8e..9704cccd 100644
--- a/model_brush.c
+++ b/model_brush.c
@@ -5070,8 +5070,10 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model,
 			else
 			{
 				// line crosses node plane, split the line
+				dist1 = PlaneDiff(linestart, node->plane);
+				dist2 = PlaneDiff(lineend, node->plane);
 				midfrac = dist1 / (dist1 - dist2);
-				VectorLerp(start, midfrac, end, mid);
+				VectorLerp(linestart, midfrac, lineend, mid);
 				// take the near side first
 				Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
 				if (midfrac <= trace->realfraction)