From 4a0c998f53426ffff26bc1dd210fac803dc1499a Mon Sep 17 00:00:00 2001
From: Alexei Kotov <alexdobrohotov@yandex.ru>
Date: Fri, 18 Jul 2025 00:13:01 +0300
Subject: [PATCH] Avoid zero division during animation interpolation

---
 components/nifosg/controller.hpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/components/nifosg/controller.hpp b/components/nifosg/controller.hpp
index 41c8027eea..cceec279b2 100644
--- a/components/nifosg/controller.hpp
+++ b/components/nifosg/controller.hpp
@@ -112,7 +112,12 @@ namespace NifOsg
                 mLastHighKey = it;
                 mLastLowKey = --it;
 
-                float a = (time - mLastLowKey->first) / (mLastHighKey->first - mLastLowKey->first);
+                const float highTime = mLastHighKey->first;
+                const float lowTime = mLastLowKey->first;
+                if (highTime == lowTime)
+                    return mLastLowKey->second.mValue;
+
+                const float a = (time - lowTime) / (highTime - lowTime);
 
                 return interpolate(mLastLowKey->second, mLastHighKey->second, a, mKeys->mInterpolationType);
             }