Minor fix to particle system AutoPlay flag handling

The previous commit broke some magic effects (e.g. shield). The controller's emit start/stop times should control the emitter, while the absence of the ParticleSystem's autoplay flag should freeze the whole particle system if no valid controller source gets assigned. This revised version works for both the Shield effect and the "dagoth ur death sparkles" effect.

components/nifosg/controller.cpp

@@ -439,12 +439,15 @@ ParticleSystemController::ParticleSystemController(const ParticleSystemControlle
 
 void ParticleSystemController::operator() (osg::Node* node, osg::NodeVisitor* nv)
 {
+    osgParticle::ParticleProcessor* emitter = static_cast<osgParticle::ParticleProcessor*>(node);
     if (hasInput())
     {
-        osgParticle::ParticleSystem* partsys = static_cast<osgParticle::ParticleSystem*>(node);
         float time = getInputValue(nv);
-        partsys->setFrozen(!(time >= mEmitStart && time < mEmitStop));
+        emitter->getParticleSystem()->setFrozen(false);
+        emitter->setEnabled(time >= mEmitStart && time < mEmitStop);
     }
+    else
+        emitter->getParticleSystem()->setFrozen(true);
     traverse(node, nv);
 }
 

components/nifosg/nifloader.cpp

@@ -994,7 +994,7 @@ namespace NifOsg
 
                 osg::ref_ptr<ParticleSystemController> callback(new ParticleSystemController(partctrl));
                 setupParticleController(partctrl, callback, particleflags);
-                partsys->setUpdateCallback(callback);
+                emitter->setUpdateCallback(callback);
 
                 if (!(particleflags & Nif::NiNode::ParticleFlag_AutoPlay))
                 {