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+/** \file move_listener.h
+ * <File description>
+ *
+ * $Id: move_listener.h,v 1.2 2000/12/04 17:58:09 coutelas Exp $
+ */
+
+/* Copyright, 2000 Nevrax Ltd.
+ *
+ * This file is part of NEVRAX NEL.
+ * NEVRAX NEL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+
+ * NEVRAX NEL 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
+ * General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with NEVRAX NEL; see the file COPYING. If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef NL_MOVE_LISTENER_H
+#define NL_MOVE_LISTENER_H
+
+#include "nel/misc/types_nl.h"
+#include "nel/misc/event_listener.h"
+#include "nel/misc/matrix.h"
+#include "nel/3d/viewport.h"
+#include "nel/3d/scene.h"
+#include "nel/3d/camera.h"
+
+
+
+namespace NL3D 
+{
+
+
+/**
+ * CMoveListener is a listener that handle a 3d matrix with mouse events.
+ * \author Stephane Coutelas
+ * \author Nevrax France
+ * \date 2000
+ */
+class CMoveListener : public NLMISC::IEventListener
+{
+public:
+	
+	/** 
+	 * TMoveMode. 
+	 * moving modes
+	 */
+	enum TMoveMode
+	{
+		WALK,
+		FREE
+	};
+	
+	/** 
+	 * Constructor. 
+	 * You should call init then.
+	 */
+	CMoveListener();
+
+
+	/** 
+	 * Constructor. 
+	 * You should call init then.
+	 * \param scene the scene
+	 * \param w screen width in pixels
+	 * \param h screen height in pixels
+	 * \param camera the camera
+	 */
+	void init(CScene * scene, uint w, uint h, const class CCamera& camera)
+	{
+		_Scene = scene;
+		_Width = w;
+		_Height = h;
+		
+		_Viewport = scene->getViewport();
+
+		float dummy;
+		_ViewMatrix = camera.getMatrix ();
+		camera.getFrustum (_Left, _Right, _Bottom, _Top, _Depth, dummy);
+	}
+
+	/**
+	 * Set the moving mode
+	 * \param m the moving mode
+	 */
+	void setMode(TMoveMode m)
+	{
+		_Mode = m;
+	}
+
+	/** 
+     * Register the listener to the server.
+	 */
+	void addToServer (NLMISC::CEventServer& server);
+
+	/** 
+	  * Unregister the listener to the server.
+	  */
+	void removeFromServer (NLMISC::CEventServer& server);
+	
+
+private:
+
+	/// Internal use
+	virtual void operator()(const NLMISC::CEvent& event);
+
+	/// moving mode
+	TMoveMode _Mode;
+	
+	/// view matrix
+	NLMISC::CMatrix _ViewMatrix;
+
+	/// viewport
+	NL3D::CViewport	_Viewport;
+	
+	/// true if previous mouse move event was re-centering cursor
+	bool _CursorReset;
+
+	CScene * _Scene;
+	
+	/// screen width
+	uint _Width;
+
+	/// screen height
+	uint _Height;
+
+	///frustum parameters
+	float _Top;
+	float _Bottom;
+	float _Left;
+	float _Right;
+	float _Depth;
+	
+	/// current position
+	CVector _Pos;
+
+	///current rotation z angle
+	float _RotZ;
+
+	///current rotation x angle
+	float _RotX;
+	
+	/// step for translation
+	static const float _StepTrans;
+
+	/// step for rotation
+	static const float _StepRot;
+
+}; // NL3D
+
+}
+
+#endif // NL_MOVE_LISTENER_H
+
+/* End of move_listener.h */