From f5f25428499698d70adaa2f31ff8a471216e1e3f Mon Sep 17 00:00:00 2001
From: Monster Iestyn <iestynjealous@ntlworld.com>
Date: Wed, 16 Nov 2016 17:50:44 +0000
Subject: [PATCH] Go through all the polyobjects to find leftover polyobj
 planes to add to the draw nodes list

I'm convinced there's going to be some stupid side effects from doing this, but it's the quickest way I can fix the polyobj planes not all appearing anyway
---
 src/r_things.c | 36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

diff --git a/src/r_things.c b/src/r_things.c
index ed1ddeab..927217c5 100644
--- a/src/r_things.c
+++ b/src/r_things.c
@@ -1760,6 +1760,29 @@ static void R_CreateDrawNodes(void)
 		}
 	}
 
+#ifdef POLYOBJECTS_PLANES
+	// find all the remaining polyobject planes and add them on the end of the list
+	// probably this is a terrible idea if we wanted them to be sorted properly
+	// but it works getting them in for now
+	for (i = 0; i < numPolyObjects; i++)
+	{
+		if (!PolyObjects[i].visplane)
+			continue;
+		plane = PolyObjects[i].visplane;
+		R_PlaneBounds(plane);
+
+		if (plane->low < con_clipviewtop || plane->high > vid.height || plane->high > plane->low)
+		{
+			PolyObjects[i].visplane = NULL;
+			continue;
+		}
+		entry = R_CreateDrawNode(&nodehead);
+		entry->plane = plane;
+		// note: no seg is set, for what should be obvious reasons
+		PolyObjects[i].visplane = NULL;
+	}
+#endif
+
 	if (visspritecount == 0)
 		return;
 
@@ -1816,13 +1839,16 @@ static void R_CreateDrawNodes(void)
 				if (x1 < r2->plane->minx) x1 = r2->plane->minx;
 				if (x2 > r2->plane->maxx) x2 = r2->plane->maxx;
 
-				for (i = x1; i <= x2; i++)
+				if (r2->seg) // if no seg set, assume the whole thing is in front or something stupid
 				{
-					if (r2->seg->frontscale[i] > rover->scale)
-						break;
+					for (i = x1; i <= x2; i++)
+					{
+						if (r2->seg->frontscale[i] > rover->scale)
+							break;
+					}
+					if (i > x2)
+						continue;
 				}
-				if (i > x2)
-					continue;
 
 				entry = R_CreateDrawNode(NULL);
 				(entry->prev = r2->prev)->next = entry;