From 19da43d23bdef52b9ee29c1578cf4db9110c8014 Mon Sep 17 00:00:00 2001
From: helixhorned <helixhorned@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Fri, 6 Dec 2013 18:56:42 +0000
Subject: [PATCH] Polymer: invalidate a wall when its sector's visibility has
 changed.

git-svn-id: https://svn.eduke32.com/eduke32@4192 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/src/polymer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/polymer/eduke32/build/src/polymer.c b/polymer/eduke32/build/src/polymer.c
index c3799ade6..9c3f87984 100644
--- a/polymer/eduke32/build/src/polymer.c
+++ b/polymer/eduke32/build/src/polymer.c
@@ -2387,6 +2387,8 @@ static int32_t      polymer_updatesector(int16_t sectnum)
         s->floorheinum = sec->floorheinum;
         s->ceilingheinum = sec->ceilingheinum;
     }
+    else if (sec->visibility != s->visibility)
+        wallinvalidate = 1;
 
     floorpicnum = sec->floorpicnum;
     DO_TILE_ANIM(floorpicnum, sectnum);