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diff --git a/extern/bullet/Bullet/CollisionShapes/MultiSphereShape.h b/extern/bullet/Bullet/CollisionShapes/MultiSphereShape.h
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+++ b/extern/bullet/Bullet/CollisionShapes/MultiSphereShape.h
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+/*
+ * Copyright (c) 2005 Erwin Coumans http://www.erwincoumans.com
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies.
+ * Erwin Coumans makes no representations about the suitability 
+ * of this software for any purpose.  
+ * It is provided "as is" without express or implied warranty.
+*/
+#ifndef MULTI_SPHERE_MINKOWSKI_H
+#define MULTI_SPHERE_MINKOWSKI_H
+
+#include "ConvexShape.h"
+#include "BroadphaseCollision/BroadphaseProxy.h" // for the types
+
+#define MAX_NUM_SPHERES 5
+
+///MultiSphereShape represents implicit convex hull of a collection of spheres (using getSupportingVertex)
+class MultiSphereShape : public ConvexShape
+
+{
+	
+	SimdVector3 m_localPositions[MAX_NUM_SPHERES];
+	SimdScalar  m_radi[MAX_NUM_SPHERES];
+	SimdVector3	m_inertiaHalfExtents;
+
+	int m_numSpheres;
+	float m_minRadius;
+
+
+
+
+
+public:
+	MultiSphereShape (const SimdVector3& inertiaHalfExtents,const SimdVector3* positions,const SimdScalar* radi,int numSpheres);
+
+	///CollisionShape Interface
+	virtual void	CalculateLocalInertia(SimdScalar mass,SimdVector3& inertia);
+
+	/// ConvexShape Interface
+	virtual SimdVector3	LocalGetSupportingVertexWithoutMargin(const SimdVector3& vec)const;
+
+
+	virtual int	GetShapeType() const { return MULTI_SPHERE_SHAPE_PROXYTYPE; }
+
+	virtual char*	GetName()const 
+	{
+		return "MultiSphere";
+	}
+
+};
+
+
+#endif //MULTI_SPHERE_MINKOWSKI_H