From b4dd9e6b4d20ad949c1832cc950adb552aab8e2c Mon Sep 17 00:00:00 2001
From: fredzio <chardon.frederic@gmail.com>
Date: Sun, 8 Aug 2021 17:19:18 +0200
Subject: [PATCH] Avoid division by zero in movementsolver when an actor is
 immobile and in a storm

---
 apps/openmw/mwphysics/movementsolver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/openmw/mwphysics/movementsolver.cpp b/apps/openmw/mwphysics/movementsolver.cpp
index 2401f78367..df9239dd83 100644
--- a/apps/openmw/mwphysics/movementsolver.cpp
+++ b/apps/openmw/mwphysics/movementsolver.cpp
@@ -163,7 +163,7 @@ namespace MWPhysics
         }
 
         // Now that we have the effective movement vector, apply wind forces to it
-        if (worldData.mIsInStorm)
+        if (worldData.mIsInStorm && velocity.length() > 0)
         {
             osg::Vec3f stormDirection = worldData.mStormDirection;
             float angleDegrees = osg::RadiansToDegrees(std::acos(stormDirection * velocity / (stormDirection.length() * velocity.length())));