Toggable day night switch (#5928)

CHANGELOG.md

@@ -38,6 +38,7 @@
     Bug #5842: GetDisposition adds temporary disposition change from different actors
     Bug #5863: GetEffect should return true after the player has teleported
     Bug #5913: Failed assertion during Ritual of Trees quest
+    Bug #5928: Glow in the Dahrk functionality used without mod installed
     Bug #5937: Lights always need to be rotated by 90 degrees
     Bug #6037: Morrowind Content Language Cannot be Set to English in OpenMW Launcher
     Bug #6051: NaN water height in ESM file is not handled gracefully

apps/launcher/advancedpage.cpp

@@ -143,6 +143,8 @@ bool Launcher::AdvancedPage::loadSettings()
         loadSettingBool(activeGridObjectPagingCheckBox, "object paging active grid", "Terrain");
         viewingDistanceComboBox->setValue(convertToCells(Settings::Manager::getInt("viewing distance", "Camera")));
         objectPagingMinSizeComboBox->setValue(Settings::Manager::getDouble("object paging min size", "Terrain"));
+
+        loadSettingBool(nightDaySwitchesCheckBox, "day night switches", "Game");
     }
 
     // Audio
@@ -298,6 +300,8 @@ void Launcher::AdvancedPage::saveSettings()
         double objectPagingMinSize = objectPagingMinSizeComboBox->value();
         if (objectPagingMinSize != Settings::Manager::getDouble("object paging min size", "Terrain"))
             Settings::Manager::setDouble("object paging min size", "Terrain", objectPagingMinSize);
+
+        saveSettingBool(nightDaySwitchesCheckBox, "day night switches", "Game");
     }
     
     // Audio

apps/opencs/model/prefs/state.cpp

@@ -223,6 +223,7 @@ void CSMPrefs::State::declare()
     declareColour ("scene-night-gradient-colour", "Scene Night Gradient Colour", QColor (47, 51, 51, 255)).
         setTooltip("Sets the gradient color to use in conjunction with the night background color. Ignored if "
             "the gradient option is disabled.");
+    declareBool("scene-day-night-switch-nodes", "Use Day/Night Switch Nodes", true);
 
     declareCategory ("Tooltips");
     declareBool ("scene", "Show Tooltips in 3D scenes", true);

apps/opencs/view/render/lighting.cpp

@@ -3,9 +3,12 @@
 #include <osg/LightSource>
 #include <osg/NodeVisitor>
 #include <osg/Switch>
+#include <osg/ValueObject>
 
 #include <components/misc/constants.hpp>
 
+#include "../../model/prefs/state.hpp"
+
 class DayNightSwitchVisitor : public osg::NodeVisitor
 {
 public:
@@ -16,8 +19,33 @@ public:
 
     void apply(osg::Switch &switchNode) override
     {
-        if (switchNode.getName() == Constants::NightDayLabel)
-            switchNode.setSingleChildOn(mIndex);
+        constexpr int NoIndex = -1;
+
+        int initialIndex = NoIndex;
+        if (!switchNode.getUserValue("initialIndex", initialIndex))
+        {
+            for (size_t i = 0; i < switchNode.getValueList().size(); ++i)
+            {
+                if (switchNode.getValueList()[i])
+                {
+                    initialIndex = i;
+                    break;
+                }
+            }
+
+            if (initialIndex != NoIndex)
+                switchNode.setUserValue("initialIndex", initialIndex);
+        }
+
+        if (CSMPrefs::get()["Rendering"]["scene-day-night-switch-nodes"].isTrue())
+        {
+            if (switchNode.getName() == Constants::NightDayLabel)
+                switchNode.setSingleChildOn(mIndex);
+        }
+        else if (initialIndex != NoIndex)
+        {
+            switchNode.setSingleChildOn(initialIndex);
+        }
 
         traverse(switchNode);
     }

apps/opencs/view/render/scenewidget.cpp

@@ -550,6 +550,11 @@ void SceneWidget::settingChanged (const CSMPrefs::Setting *setting)
     {
         updateCameraParameters();
     }
+    else if (*setting == "Rendering/scene-day-night-switch-nodes")
+    {
+        if (mLighting)
+            setLighting(mLighting);
+    }
 }
 
 void RenderWidget::updateCameraParameters(double overrideAspect)

apps/opencs/view/world/previewsubview.cpp

@@ -25,6 +25,8 @@ CSVWorld::PreviewSubView::PreviewSubView (const CSMWorld::UniversalId& id, CSMDo
     else
         mScene = new CSVRender::PreviewWidget (document.getData(), id.getId(), true, this);
 
+    mScene->setExterior(true);
+
     CSVWidget::SceneToolbar *toolbar = new CSVWidget::SceneToolbar (48+6, this);
 
     CSVWidget::SceneToolMode *lightingTool = mScene->makeLightingSelector (toolbar);

apps/openmw/mwrender/animation.cpp

@@ -1831,7 +1831,7 @@ namespace MWRender
             visitor.remove();
         }
 
-        if (SceneUtil::hasUserDescription(mObjectRoot, Constants::NightDayLabel))
+        if (Settings::Manager::getBool("day night switches", "Game") && SceneUtil::hasUserDescription(mObjectRoot, Constants::NightDayLabel))
         {
             AddSwitchCallbacksVisitor visitor;
             mObjectRoot->accept(visitor);

docs/source/reference/modding/settings/game.rst

@@ -465,3 +465,12 @@ default actor pathfind half extents
 
 Actor half extents used for exterior cells to generate navmesh.
 Changing the value will invalidate navmesh disk cache.
+
+day night switches
+------------------
+
+:Type:      boolean
+:Range:		True/False
+:Default:	True
+
+Some mods add models which change visuals based on time of day. When this setting is enabled, supporting models will automatically make use of Day/night state.

files/settings-default.cfg

@@ -373,6 +373,9 @@ allow actors to follow over water surface = true
 # Default size of actor for navmesh generation
 default actor pathfind half extents = 29.27999496459961 28.479997634887695 66.5
 
+# Enables use of day/night switch nodes
+day night switches = true
+
 [General]
 
 # Anisotropy reduces distortion in textures at low angles (e.g. 0 to 16).

files/ui/advancedpage.ui

@@ -557,6 +557,25 @@
              </layout>
             </widget>
            </item>
+           <item>
+            <widget class="QGroupBox" name="miscGroup">
+             <property name="title">
+              <string>Models</string>
+             </property>
+             <layout class="QGridLayout" name="miscLayout">
+              <item row="0" column="0">
+               <widget class="QCheckBox" name="nightDaySwitchesCheckBox">
+                <property name="toolTip">
+                  <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;If this setting is true, supporting models will make use of day night switch nodes.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+                </property>
+                <property name="text">
+                 <string>Day night switch nodes</string>
+                </property>
+               </widget>
+              </item>
+             </layout>
+            </widget>
+           </item>
            <item>
             <spacer name="verticalSpacer">
              <property name="orientation">