Identify unknown float in NiGravity

components/nif/controlled.cpp

@@ -54,7 +54,10 @@ namespace Nif
     {
         Controlled::read(nif);
 
-        /*unknown*/nif->getFloat();
+        float decay = nif->getFloat();
+        if (decay != 0.f)
+            nif->file->warn("Unhandled gravity decay factor");
+
         mForce = nif->getFloat();
         mType = nif->getUInt();
         mPosition = nif->getVector3();