Adjust PulseSlow light controller (Fixes #1963)

components/sceneutil/lightcontroller.cpp

@@ -76,7 +76,7 @@ namespace SceneUtil
         if(mType == LT_Pulse || mType == LT_PulseSlow)
         {
             cycle_time = 2.0f * pi;
-            time_distortion = 20.0f;
+            time_distortion = mType == LT_Pulse ? 20.0f : 4.f;
         }
         else
         {
@@ -114,9 +114,9 @@ namespace SceneUtil
         else if(mType == LT_FlickerSlow)
             brightness = 0.75f + flickerAmplitude(mDeltaCount*slow)*0.25f;
         else if(mType == LT_Pulse)
-            brightness = 1.0f + pulseAmplitude(mDeltaCount*fast)*0.25f;
+            brightness = 0.7f + pulseAmplitude(mDeltaCount*fast)*0.3f;
         else if(mType == LT_PulseSlow)
-            brightness = 1.0f + pulseAmplitude(mDeltaCount*slow)*0.25f;
+            brightness = 0.7f + pulseAmplitude(mDeltaCount*slow)*0.3f;
 
         static_cast<SceneUtil::LightSource*>(node)->getLight()->setDiffuse(mDiffuseColor * brightness);
     }