Adds external dep dtentity

external/dtEntity/include/dtEntityOSG/osgsysteminterface.h

@@ -0,0 +1,101 @@
+#pragma once
+
+/* -*-c++-*-
+ * dtEntity Game and Simulation Engine
+ *
+ * This library is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 2.1 of the License, or (at your option)
+ * any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Martin Scheffler
+ */
+
+#include <dtEntity/core.h>
+#include <dtEntity/systeminterface.h>
+#include <dtEntityOSG/export.h>
+#include <osgViewer/ViewerBase>
+#include <vector>
+
+namespace dtEntity
+{
+   class MessagePump;
+}
+
+namespace dtEntityOSG
+{     
+   
+   class DTENTITY_OSG_EXPORT OSGSystemInterface : public dtEntity::SystemInterface
+   {
+   public:
+
+      OSGSystemInterface(dtEntity::MessagePump&, int argc, const char** argv);
+      ~OSGSystemInterface();
+
+      void InstallUpdateCallback(osg::Node* node);
+
+      void SetViewer(osgViewer::ViewerBase* v) { mViewer = v; }
+      osgViewer::ViewerBase* GetViewer() const { return mViewer.get(); }
+
+      osgViewer::View* GetPrimaryView() const;
+      osgViewer::GraphicsWindow* GetPrimaryWindow() const;
+      osg::Camera* GetPrimaryCamera() const;
+
+      virtual void EmitTickMessagesAndQueuedMessages();
+
+      virtual void EmitPostUpdateMessage();
+
+      virtual float GetDeltaSimTime() const;
+      virtual float GetDeltaRealTime() const;
+      virtual dtEntity::Timer_t GetRealClockTime();
+      virtual double GetSimulationTime() const;
+      void SetSimulationTime(double);
+
+      virtual float GetTimeScale() const;
+      virtual void SetTimeScale(float v);
+
+      virtual dtEntity::Timer_t GetSimulationClockTime() const;
+      virtual void SetSimulationClockTime(dtEntity::Timer_t t);
+
+      void SetTimeValues(double simulationTime, float deltaSimTime,float deltaTime, dtEntity::Timer_t clockTime);
+
+      /**
+       * Get absolute path from a relative file path.
+       * Returns empty string if file is not found
+       */
+      virtual std::string FindDataFile(const std::string& filename);
+
+      /**
+        * return true if a file exists
+        */
+      virtual bool FileExists(const std::string& filename);
+
+      virtual int GetArgC() { return mArgC; }
+      virtual const char** GetArgV() { return mArgV; }
+
+   private:
+      osg::observer_ptr<osgViewer::ViewerBase> mViewer;      
+      dtEntity::MessagePump* mMessagePump;
+      class Impl;
+      Impl* mImpl;
+
+      int mArgC;
+      const char** mArgV;
+
+   };
+
+   inline OSGSystemInterface* GetOSGSystemInterface()
+   {
+      return static_cast<OSGSystemInterface*>(dtEntity::GetSystemInterface());
+   }
+  
+}