Light magic effect

Notable change compared to the old (Ogre) effect: uses the ambient instead of diffuse term (Fixes #2364)

apps/openmw/mwrender/animation.cpp

@@ -267,6 +267,8 @@ namespace MWRender
 
     Animation::~Animation()
     {
+        setLightEffect(0.f);
+
         if (mObjectRoot)
             mInsert->removeChild(mObjectRoot);
     }
@@ -1224,6 +1226,36 @@ namespace MWRender
             return found->second;
     }
 
+    void Animation::setLightEffect(float effect)
+    {
+        if (effect == 0)
+        {
+            if (mGlowLight)
+            {
+                mInsert->removeChild(mGlowLight);
+                mGlowLight = NULL;
+            }
+        }
+        else
+        {
+            if (!mGlowLight)
+            {
+                mGlowLight = new SceneUtil::LightSource;
+                mGlowLight->setLight(new osg::Light);
+                osg::Light* light = mGlowLight->getLight();
+                light->setDiffuse(osg::Vec4f(0,0,0,0));
+                light->setSpecular(osg::Vec4f(0,0,0,0));
+                light->setAmbient(osg::Vec4f(1.5f,1.5f,1.5f,1.f));
+                mInsert->addChild(mGlowLight);
+            }
+
+            effect += 3;
+            osg::Light* light = mGlowLight->getLight();
+            mGlowLight->setRadius(effect * 66.f);
+            light->setLinearAttenuation(0.5f/effect);
+        }
+    }
+
     void Animation::addControllers()
     {
         mHeadController = NULL;

apps/openmw/mwrender/animation.hpp

@@ -21,6 +21,11 @@ namespace NifOsg
     class KeyframeController;
 }
 
+namespace SceneUtil
+{
+    class LightSource;
+}
+
 namespace MWRender
 {
 
@@ -202,6 +207,8 @@ protected:
     float mHeadYawRadians;
     float mHeadPitchRadians;
 
+    osg::ref_ptr<SceneUtil::LightSource> mGlowLight;
+
     /* Sets the appropriate animations on the bone groups based on priority.
      */
     void resetActiveGroups();
@@ -377,7 +384,7 @@ public:
     // TODO: move outside of this class
     /// Makes this object glow, by placing a Light in its center.
     /// @param effect Controls the radius and intensity of the light.
-    virtual void setLightEffect(float effect) {}
+    virtual void setLightEffect(float effect);
 
     virtual void setHeadPitch(float pitchRadians);
     virtual void setHeadYaw(float yawRadians);