diff --git a/src/BulletCollision/CollisionShapes/btCollisionShape.h b/src/BulletCollision/CollisionShapes/btCollisionShape.h
index ef778d95b..12e30d65b 100644
--- a/src/BulletCollision/CollisionShapes/btCollisionShape.h
+++ b/src/BulletCollision/CollisionShapes/btCollisionShape.h
@@ -25,9 +25,12 @@ subject to the following restrictions:
 ///btCollisionShape provides interface for collision shapes that can be shared among btCollisionObjects.
 class btCollisionShape
 {
+
+	void* m_userPointer;
+
 public:
 
-	btCollisionShape() 
+	btCollisionShape() : m_userPointer(0)
 	{
 	}
 	virtual ~btCollisionShape()
@@ -88,6 +91,19 @@ public:
 	virtual void	setMargin(btScalar margin) = 0;
 	virtual btScalar	getMargin() const = 0;
 
+	
+	///optional user data pointer
+	void	setUserPointer(void* userPtr)
+	{
+		m_userPointer = userPtr;
+	}
+
+	void*	getUserPointer() const
+	{
+		return m_userPointer;
+	}
+
+
 };	
 
 #endif //COLLISION_SHAPE_H
diff --git a/src/BulletCollision/CollisionShapes/btConvexInternalShape.h b/src/BulletCollision/CollisionShapes/btConvexInternalShape.h
index a03af873b..7fcaad3fc 100644
--- a/src/BulletCollision/CollisionShapes/btConvexInternalShape.h
+++ b/src/BulletCollision/CollisionShapes/btConvexInternalShape.h
@@ -17,10 +17,7 @@ class btConvexInternalShape : public btConvexShape
 	
 	btScalar	m_collisionMargin;
 
-	btScalar	m_padding[2];
-
-
-
+	btScalar	m_padding;
 
 public:
 
@@ -93,6 +90,8 @@ public:
 		btAssert(0);
 	}
 
+
+	
 };
 
 
diff --git a/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp b/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
index 31a8848f2..018f79ca2 100644
--- a/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
+++ b/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
@@ -42,6 +42,7 @@ subject to the following restrictions:
 #include "BulletCollision/CollisionShapes/btSphereShape.h"
 #include "BulletCollision/CollisionShapes/btTriangleCallback.h"
 #include "BulletCollision/CollisionShapes/btTriangleMeshShape.h"
+#include "BulletCollision/CollisionShapes/btStaticPlaneShape.h"
 #include "LinearMath/btIDebugDraw.h"
 
 
@@ -913,6 +914,25 @@ void btDiscreteDynamicsWorld::debugDrawObject(const btTransform& worldTransform,
 				getDebugDrawer()->drawLine(start+worldTransform.getBasis() * (offsetHeight-offsetRadius),start+worldTransform.getBasis() * (-offsetHeight-offsetRadius),color);
 				break;
 			}
+
+			case STATIC_PLANE_PROXYTYPE:
+				{
+					const btStaticPlaneShape* staticPlaneShape = static_cast<const btStaticPlaneShape*>(shape);
+					btScalar planeConst = staticPlaneShape->getPlaneConstant();
+					const btVector3& planeNormal = staticPlaneShape->getPlaneNormal();
+					btVector3 planeOrigin = planeNormal * planeConst;
+					btVector3 vec0,vec1;
+					btPlaneSpace1(planeNormal,vec0,vec1);
+					btScalar vecLen = 100.f;
+					btVector3 pt0 = planeOrigin + vec0*vecLen;
+					btVector3 pt1 = planeOrigin - vec0*vecLen;
+					btVector3 pt2 = planeOrigin + vec1*vecLen;
+					btVector3 pt3 = planeOrigin - vec1*vecLen;
+					getDebugDrawer()->drawLine(worldTransform*pt0,worldTransform*pt1,color);
+					getDebugDrawer()->drawLine(worldTransform*pt2,worldTransform*pt3,color);
+					break;
+
+				}
 		default:
 			{