Add Ogre::Light objects to the object list

Note that NIFs actually have NiLight-based light records which could be
used to create Ogre::Light objects. However, no Morrowind NIF uses them,
as far as I can tell.

apps/openmw/mwrender/animation.cpp

@@ -35,11 +35,14 @@ void Animation::AnimationValue::setValue(Ogre::Real)
 
 void Animation::destroyObjectList(Ogre::SceneManager *sceneMgr, NifOgre::ObjectList &objects)
 {
+    for(size_t i = 0;i < objects.mLights.size();i++)
+        sceneMgr->destroyLight(objects.mLights[i]);
     for(size_t i = 0;i < objects.mParticles.size();i++)
         sceneMgr->destroyParticleSystem(objects.mParticles[i]);
     for(size_t i = 0;i < objects.mEntities.size();i++)
         sceneMgr->destroyEntity(objects.mEntities[i]);
     objects.mControllers.clear();
+    objects.mLights.clear();
     objects.mParticles.clear();
     objects.mEntities.clear();
     objects.mSkelBase = NULL;

apps/openmw/mwrender/objects.cpp

@@ -159,7 +159,7 @@ void Objects::insertMesh (const MWWorld::Ptr& ptr, const std::string& mesh, bool
     }
 
     if(!mIsStatic || !Settings::Manager::getBool("use static geometry", "Objects") ||
-            anyTransparency || !objects.mParticles.empty())
+            anyTransparency || !objects.mParticles.empty() || !objects.mLights.empty())
     {
         for(size_t i = 0;i < objects.mEntities.size();i++)
         {

components/nifogre/ogrenifloader.hpp

@@ -43,6 +43,7 @@ struct ObjectList {
     Ogre::Entity *mSkelBase;
     std::vector<Ogre::Entity*> mEntities;
     std::vector<Ogre::ParticleSystem*> mParticles;
+    std::vector<Ogre::Light*> mLights;
 
     std::map<int,TextKeyMap> mTextKeys;