From 17e279cf0d8276075e77ee3cd578475e9ba7dc76 Mon Sep 17 00:00:00 2001
From: Alexei Kotov <alexdobrohotov@yandex.ru>
Date: Mon, 15 Dec 2025 14:49:45 +0300
Subject: [PATCH] Don't read terrain parameters for BGSM v1/v2

This fixes parsing of most BGSM files from Fallout 4.
---
 components/bgsm/file.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/components/bgsm/file.cpp b/components/bgsm/file.cpp
index 2aaacaf25c..0eb9f09bf9 100644
--- a/components/bgsm/file.cpp
+++ b/components/bgsm/file.cpp
@@ -181,13 +181,16 @@ namespace Bgsm
         if (mVersion >= 1)
         {
             stream.read(mSkewSpecularAlpha);
-            stream.read(mTerrain);
-            if (mTerrain)
+            if (mVersion >= 3)
             {
-                if (mVersion == 3)
-                    stream.skip(4); // Unknown
+                stream.read(mTerrain);
+                if (mTerrain)
+                {
+                    if (mVersion == 3)
+                        stream.skip(4); // Unknown
 
-                stream.read(mTerrainParams);
+                    stream.read(mTerrainParams);
+                }
             }
         }
     }