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diff --git a/extern/bullet2/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.h b/extern/bullet2/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.h
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+++ b/extern/bullet2/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.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 BROADPHASE_PROXY_H
+#define BROADPHASE_PROXY_H
+
+
+
+/// btDispatcher uses these types
+/// IMPORTANT NOTE:The types are ordered polyhedral, implicit convex and concave
+/// to facilitate type checking
+enum BroadphaseNativeTypes
+{
+// polyhedral convex shapes
+	BOX_SHAPE_PROXYTYPE,
+	TRIANGLE_SHAPE_PROXYTYPE,
+	TETRAHEDRAL_SHAPE_PROXYTYPE,
+	CONVEX_TRIANGLEMESH_SHAPE_PROXYTYPE,
+	CONVEX_HULL_SHAPE_PROXYTYPE,
+//implicit convex shapes
+IMPLICIT_CONVEX_SHAPES_START_HERE,
+	SPHERE_SHAPE_PROXYTYPE,
+	MULTI_SPHERE_SHAPE_PROXYTYPE,
+	CONE_SHAPE_PROXYTYPE,
+	CONVEX_SHAPE_PROXYTYPE,
+	CYLINDER_SHAPE_PROXYTYPE,
+	MINKOWSKI_SUM_SHAPE_PROXYTYPE,
+	MINKOWSKI_DIFFERENCE_SHAPE_PROXYTYPE,
+//concave shapes
+CONCAVE_SHAPES_START_HERE,
+	//keep all the convex shapetype below here, for the check IsConvexShape in broadphase proxy!
+	TRIANGLE_MESH_SHAPE_PROXYTYPE,
+	///used for demo integration FAST/Swift collision library and Bullet
+	FAST_CONCAVE_MESH_PROXYTYPE,
+
+	EMPTY_SHAPE_PROXYTYPE,
+	STATIC_PLANE_PROXYTYPE,
+CONCAVE_SHAPES_END_HERE,
+
+	COMPOUND_SHAPE_PROXYTYPE,
+
+	MAX_BROADPHASE_COLLISION_TYPES
+};
+
+
+///btBroadphaseProxy
+struct btBroadphaseProxy
+{
+	
+	///optional filtering to cull potential collisions
+	enum CollisionFilterGroups
+	{
+	        DefaultFilter = 1,
+	        StaticFilter = 2,
+	        KinematicFilter = 4,
+	        DebrisFilter = 8,
+	        AllFilter = DefaultFilter | StaticFilter | KinematicFilter | DebrisFilter,
+	};
+
+	//Usually the client btCollisionObject or Rigidbody class
+	void*	m_clientObject;
+	short int m_collisionFilterGroup;
+	short int m_collisionFilterMask;
+
+	//used for memory pools
+	btBroadphaseProxy() :m_clientObject(0){}
+
+	btBroadphaseProxy(void* userPtr,short int collisionFilterGroup, short int collisionFilterMask)
+		:m_clientObject(userPtr),
+		m_collisionFilterGroup(collisionFilterGroup),
+		m_collisionFilterMask(collisionFilterMask)
+	{
+	}
+
+	static inline bool isPolyhedral(int proxyType)
+	{
+		return (proxyType  < IMPLICIT_CONVEX_SHAPES_START_HERE);
+	}
+
+	static inline bool	isConvex(int proxyType)
+	{
+		return (proxyType < CONCAVE_SHAPES_START_HERE);
+	}
+
+	static inline bool	isConcave(int proxyType)
+	{
+		return ((proxyType > CONCAVE_SHAPES_START_HERE) &&
+			(proxyType < CONCAVE_SHAPES_END_HERE));
+	}
+	static inline bool	isCompound(int proxyType)
+	{
+		return (proxyType == COMPOUND_SHAPE_PROXYTYPE);
+	}
+	
+};
+
+class btCollisionAlgorithm;
+
+struct btBroadphaseProxy;
+
+//Increase SIMPLE_MAX_ALGORITHMS to allow multiple btDispatchers caching their own algorithms
+#define SIMPLE_MAX_ALGORITHMS 1
+
+/// contains a pair of aabb-overlapping objects
+struct btBroadphasePair
+{
+	btBroadphasePair ()
+		:
+	m_pProxy0(0),
+		m_pProxy1(0)
+	{
+		for (int i=0;i<SIMPLE_MAX_ALGORITHMS;i++)
+		{
+			m_algorithms[i] = 0;
+		}
+	}
+
+	btBroadphasePair(const btBroadphasePair& other)
+		:		m_pProxy0(other.m_pProxy0),
+				m_pProxy1(other.m_pProxy1)
+	{
+		for (int i=0;i<SIMPLE_MAX_ALGORITHMS;i++)
+		{
+			m_algorithms[i] = other.m_algorithms[i];
+		}
+	}
+	btBroadphasePair(btBroadphaseProxy& proxy0,btBroadphaseProxy& proxy1)
+	{
+
+		//keep them sorted, so the std::set operations work
+		if (&proxy0 < &proxy1)
+        { 
+            m_pProxy0 = &proxy0; 
+            m_pProxy1 = &proxy1; 
+        }
+        else 
+        { 
+			m_pProxy0 = &proxy1; 
+            m_pProxy1 = &proxy0; 
+        }
+
+		for (int i=0;i<SIMPLE_MAX_ALGORITHMS;i++)
+		{
+			m_algorithms[i] = 0;
+		}
+
+	}
+	
+	btBroadphaseProxy* m_pProxy0;
+	btBroadphaseProxy* m_pProxy1;
+	
+	mutable btCollisionAlgorithm* m_algorithms[SIMPLE_MAX_ALGORITHMS];
+};
+
+
+//comparison for set operation, see Solid DT_Encounter
+inline bool operator<(const btBroadphasePair& a, const btBroadphasePair& b) 
+{ 
+    return a.m_pProxy0 < b.m_pProxy0 || 
+        (a.m_pProxy0 == b.m_pProxy0 && a.m_pProxy1 < b.m_pProxy1); 
+}
+
+
+#endif //BROADPHASE_PROXY_H
+