Disable lighting for particles

Fixes magic cast visuals being too dark depending on the environment.

components/nifogre/material.cpp

@@ -106,7 +106,7 @@ Ogre::String NIFMaterialLoader::getMaterial(const Nif::ShapeData *shapedata,
                                             const Nif::NiZBufferProperty *zprop,
                                             const Nif::NiSpecularProperty *specprop,
                                             const Nif::NiWireframeProperty *wireprop,
-                                            bool &needTangents)
+                                            bool &needTangents, bool disableLighting)
 {
     Ogre::MaterialManager &matMgr = Ogre::MaterialManager::getSingleton();
     Ogre::MaterialPtr material = matMgr.getByName(name);
@@ -245,6 +245,14 @@ Ogre::String NIFMaterialLoader::getMaterial(const Nif::ShapeData *shapedata,
         }
     }
 
+    if (disableLighting)
+    {
+        ambient = Ogre::Vector3(0.f);
+        diffuse = Ogre::Vector3(0.f);
+        specular = Ogre::Vector3(0.f);
+        emissive = Ogre::Vector3(1.f);
+    }
+
     {
         // Generate a hash out of all properties that can affect the material.
         size_t h = 0;

components/nifogre/material.hpp

@@ -49,7 +49,7 @@ public:
                                     const Nif::NiZBufferProperty *zprop,
                                     const Nif::NiSpecularProperty *specprop,
                                     const Nif::NiWireframeProperty *wireprop,
-                                    bool &needTangents);
+                                    bool &needTangents, bool disableLighting=false);
 };
 
 }

components/nifogre/ogrenifloader.cpp

@@ -850,7 +850,10 @@ class NIFObjectLoader
         partsys->setMaterialName(NIFMaterialLoader::getMaterial(particledata, fullname, group,
                                                                 texprop, matprop, alphaprop,
                                                                 vertprop, zprop, specprop,
-                                                                wireprop, needTangents));
+                                                                wireprop, needTangents,
+                                                                // MW doesn't light particles, but the MaterialProperty
+                                                                // used still has lighting, so that must be ignored.
+                                                                true));
 
         partsys->setCullIndividually(false);
         partsys->setParticleQuota(particledata->numParticles);