Lua Bindings: Add view distance bindings to camera

apps/openmw/mwlua/camerabindings.cpp

@@ -92,6 +92,13 @@ namespace MWLua
         api["getFieldOfView"] = [renderingManager]() { return osg::DegreesToRadians(renderingManager->getFieldOfView()); };
         api["setFieldOfView"] = [renderingManager](float v) { renderingManager->setFieldOfView(osg::RadiansToDegrees(v)); };
 
+        api["getBaseViewDistance"] = []()
+        {
+            return std::max(0.f, Settings::Manager::getFloat("viewing distance", "Camera"));
+        };
+        api["getViewDistance"] = [renderingManager]() { return renderingManager->getViewDistance(); };
+        api["setViewDistance"] = [renderingManager](float d) { renderingManager->setViewDistance(d, true); };
+
         api["getViewTransform"] = [camera]() { return LuaUtil::TransformM{camera->getViewMatrix()}; };
 
         api["viewportToWorldVector"] = [camera, renderingManager](osg::Vec2f pos) -> osg::Vec3f

apps/openmw/mwrender/renderingmanager.cpp

@@ -1293,10 +1293,7 @@ namespace MWRender
             }
             else if (it->first == "Camera" && it->second == "viewing distance")
             {
-                mViewDistance = Settings::Manager::getFloat("viewing distance", "Camera");
+                setViewDistance(Settings::Manager::getFloat("viewing distance", "Camera"));
-                if(!Settings::Manager::getBool("use distant fog", "Fog"))
-                    mStateUpdater->setFogEnd(mViewDistance);
-                updateProjection = true;
             }
             else if (it->first == "General" && (it->second == "texture filter" ||
                                                 it->second == "texture mipmap" ||
@@ -1346,9 +1343,17 @@ namespace MWRender
         }
     }
 
-    float RenderingManager::getNearClipDistance() const
+    void RenderingManager::setViewDistance(float distance, bool delay)
     {
-        return mNearClip;
+        mViewDistance = distance;
+
+        if (delay)
+        {
+            mUpdateProjectionMatrix = true;
+            return;
+        }
+
+        updateProjectionMatrix();
     }
 
     float RenderingManager::getTerrainHeightAt(const osg::Vec3f &pos)

apps/openmw/mwrender/renderingmanager.hpp

@@ -206,7 +206,10 @@ namespace MWRender
 
         void processChangedSettings(const Settings::CategorySettingVector& settings);
 
-        float getNearClipDistance() const;
+        float getNearClipDistance() const { return mNearClip; }
+        float getViewDistance() const { return mViewDistance; }
+
+        void setViewDistance(float distance, bool delay = false);
 
         float getTerrainHeightAt(const osg::Vec3f& pos);
 

files/lua_api/openmw/camera.lua

@@ -186,6 +186,19 @@
 -- @function [parent=#camera] setFieldOfView
 -- @param #number fov Field of view vertical angle in radians
 
+--- Return base view distance.
+-- @function [parent=#camera] getBaseViewDistance
+-- @return #number
+
+--- Return current view distance.
+-- @function [parent=#camera] getViewDistance
+-- @return #number
+
+--- Set view distance.
+--- Takes effect on the next frame.
+-- @function [parent=#camera] setViewDistance
+-- @param #number distance View distance in game units
+
 --- Get world to local transform for the camera.
 -- @function [parent=#camera] getViewTransform
 -- @return openmw.util#Transform