public void destroyContactManifolds()
	{
		if(m_manifoldPtr == NULL) return;
		m_dispatcher.releaseManifold(m_manifoldPtr);
		m_manifoldPtr = NULL;
	}
	//! Creates a new contact point
	public btPersistentManifold* newContactManifold(btCollisionObject body0,btCollisionObject body1)
	{
		m_manifoldPtr = m_dispatcher.getNewManifold(body0,body1);
		return m_manifoldPtr;
	}