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+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program 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
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+#ifndef _DUMMYPHYSICSENVIRONMENT
+#define _DUMMYPHYSICSENVIRONMENT
+
+
+#include "PHY_IPhysicsEnvironment.h"
+
+/**
+*	DummyPhysicsEnvironment  is an empty placeholder
+*   Alternatives are ODE,Sumo and Dynamo PhysicsEnvironments
+*	Use DummyPhysicsEnvironment as a base to integrate your own physics engine
+*	Physics Environment takes care of stepping the simulation and is a container for physics entities (rigidbodies,constraints, materials etc.)
+*
+*	A derived class may be able to 'construct' entities by loading and/or converting
+*/
+class DummyPhysicsEnvironment  : public PHY_IPhysicsEnvironment
+{
+
+public:
+	DummyPhysicsEnvironment ();
+	virtual		~DummyPhysicsEnvironment ();
+// Perform an integration step of duration 'timeStep'.
+	virtual	void		proceed (double	timeStep);
+	virtual	void		setGravity(float x,float y,float z);
+
+	virtual int			createConstraint(class PHY_IPhysicsController* ctrl,class PHY_IPhysicsController* ctrl2,PHY_ConstraintType type,
+			float pivotX,float pivotY,float pivotZ,
+			float axisX,float axisY,float axisZ);
+
+	virtual void		removeConstraint(int constraintid);
+	virtual PHY_IPhysicsController* rayTest(void* ignoreClient, float fromX,float fromY,float fromZ, float toX,float toY,float toZ, 
+									float& hitX,float& hitY,float& hitZ,float& normalX,float& normalY,float& normalZ);
+
+
+};
+
+#endif //_DUMMYPHYSICSENVIRONMENT
+
+
+