Make underwater SFX always apply based on camera position (bug #4532)

CHANGELOG.md

@@ -93,6 +93,7 @@
     Bug #4510: Division by zero in MWMechanics::CreatureStats::setAttribute
     Bug #4519: Knockdown does not discard movement in the 1st-person mode
     Bug #4531: Movement does not reset idle animations
+    Bug #4532: Underwater sfx isn't tied to 3rd person camera
     Bug #4539: Paper Doll is affected by GUI scaling
     Bug #4543: Picking cursed items through inventory (menumode) makes it disappear
     Bug #4545: Creatures flee from werewolves

apps/openmw/mwworld/worldimp.cpp

@@ -1789,7 +1789,7 @@ namespace MWWorld
         osg::Vec3f forward = listenerOrient * osg::Vec3f(0,1,0);
         osg::Vec3f up = listenerOrient * osg::Vec3f(0,0,1);
 
-        bool underwater = isUnderwater(getPlayerPtr().getCell(), listenerPos);
+        bool underwater = isUnderwater(getPlayerPtr().getCell(), mRendering->getCameraPosition());
 
         MWBase::Environment::get().getSoundManager()->setListenerPosDir(listenerPos, forward, up, underwater);
     }