Fade only lights that have fading flag set

src/engine/graphics/model/mdlreader.cpp

@@ -527,6 +527,7 @@ shared_ptr<ModelNode::Light> MdlReader::readLight() {
     light->affectDynamic = static_cast<bool>(affectDynamic);
     light->shadow = static_cast<bool>(shadow);
     light->flareRadius = flareRadius;
+    light->fading = static_cast<bool>(fading);
 
     int numFlares = static_cast<int>(flareTexturesArrayDef.count);
     if (numFlares > 0) {

src/engine/graphics/model/modelnode.h

@@ -121,6 +121,7 @@ public:
         bool ambientOnly { false };
         bool affectDynamic { false };
         bool shadow { false };
+        bool fading { false };
         float flareRadius { 0.0f };
         std::vector<LensFlare> flares;
     };

src/engine/scene/node/light.cpp

@@ -53,10 +53,10 @@ void LightSceneNode::update(float dt) {
 
     if (_active) {
         // Fade out
-        _fadeFactor = glm::max(0.0f, _fadeFactor - kFadeSpeed * dt);
+        _fadeFactor = _modelNode->light()->fading ? glm::max(0.0f, _fadeFactor - kFadeSpeed * dt) : 0.0f;
     } else {
         // Fade in
-        _fadeFactor = glm::min(1.0f, _fadeFactor + kFadeSpeed * dt);
+        _fadeFactor = _modelNode->light()->fading ? glm::min(1.0f, _fadeFactor + kFadeSpeed * dt) : 1.0f;
     }
 }