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diff --git a/extern/bullet2/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h b/extern/bullet2/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h
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+++ b/extern/bullet2/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h
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+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef TYPED_CONSTRAINT_H
+#define TYPED_CONSTRAINT_H
+
+class btRigidBody;
+#include "LinearMath/btScalar.h"
+
+///TypedConstraint is the baseclass for Bullet constraints and vehicles
+class btTypedConstraint
+{
+	int	m_userConstraintType;
+	int	m_userConstraintId;
+	
+
+protected:
+	btRigidBody&	m_rbA;
+	btRigidBody&	m_rbB;
+	float	m_appliedImpulse;
+
+
+public:
+
+	btTypedConstraint();
+	virtual ~btTypedConstraint() {};
+	btTypedConstraint(btRigidBody& rbA);
+
+	btTypedConstraint(btRigidBody& rbA,btRigidBody& rbB);
+
+	virtual void	buildJacobian() = 0;
+
+	virtual	void	solveConstraint(btScalar	timeStep) = 0;
+
+	const btRigidBody& getRigidBodyA() const
+	{
+		return m_rbA;
+	}
+	const btRigidBody& getRigidBodyB() const
+	{
+		return m_rbB;
+	}
+
+	btRigidBody& getRigidBodyA()
+	{
+		return m_rbA;
+	}
+	btRigidBody& getRigidBodyB()
+	{
+		return m_rbB;
+	}
+
+	int getUserConstraintType() const
+	{
+		return m_userConstraintType ;
+	}
+
+	void	setUserConstraintType(int userConstraintType)
+	{
+		m_userConstraintType = userConstraintType;
+	};
+
+	void	setUserConstraintId(int uid)
+	{
+		m_userConstraintId = uid;
+	}
+	
+	int getUserConstraintId()
+	{
+		return m_userConstraintId;
+	}
+	float	getAppliedImpulse()
+	{
+		return m_appliedImpulse;
+	}
+};
+
+#endif //TYPED_CONSTRAINT_H