From 2673d9d8c3255a154daa9167779f263eb60892d1 Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Wed, 25 Jan 2017 14:59:40 -0700
Subject: [PATCH] qbsp: fix broken clipping hulls on rotating objects

---
 qbsp/brush.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/qbsp/brush.cc b/qbsp/brush.cc
index d53b3574..d1a37cc7 100644
--- a/qbsp/brush.cc
+++ b/qbsp/brush.cc
@@ -811,7 +811,14 @@ LoadBrush(const mapbrush_t *mapbrush, const vec3_t rotate_offset,
     for (int i=0; i<mapbrush->numfaces; i++)
         hullbrush.faces[i] = mapbrush->face(i);
 
-    facelist = CreateBrushFaces(&hullbrush, rotate_offset, hullnum);
+    if (hullnum == 0) {
+        facelist = CreateBrushFaces(&hullbrush, rotate_offset, hullnum);
+    } else {
+        // for clipping hulls, don't apply rotation offset yet..
+        // it will be applied below
+        facelist = CreateBrushFaces(&hullbrush, vec3_origin, hullnum);
+    }
+    
     if (!facelist) {
         Message(msgWarning, warnNoBrushFaces);
         return NULL;