From 669d23ed04e72c3bf4e43b408decb059060b4e8f Mon Sep 17 00:00:00 2001
From: Roman Fomin <rfomin@gmail.com>
Date: Sun, 18 Sep 2022 21:15:19 +0700
Subject: [PATCH] synchronize animated flats (#736)

---
 src/p_spec.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/p_spec.c b/src/p_spec.c
index 722f316b..472f99d7 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -2299,17 +2299,17 @@ void P_UpdateSpecials (void)
 
   // Animate flats and textures globally
   for (anim = anims ; anim < lastanim ; anim++)
-    for (i=anim->basepic ; i<anim->basepic+anim->numpics ; i++)
+    for (i = 0 ; i < anim->numpics ; i++)
       {
         pic = anim->basepic + ( (leveltime/anim->speed + i)%anim->numpics );
         if (anim->istexture)
-          texturetranslation[i] = pic;
+          texturetranslation[anim->basepic + i] = pic;
         else
         {
-          flattranslation[i] = pic;
+          flattranslation[anim->basepic + i] = pic;
           // [crispy] add support for SMMU swirling flats
           if (anim->speed > 65535 || anim->numpics == 1 || r_swirl)
-            flattranslation[i] = -1;
+            flattranslation[anim->basepic + i] = -1;
         }
       }