/** return the best open node */
inline Titem_ *GetBestOpenNode()
{
if (!m_open_queue.IsEmpty()) {
return m_open_queue.Begin();
}
return NULL;
}
/** remove and return the best open node */
inline Titem_ *PopBestOpenNode()
{
if (!m_open_queue.IsEmpty()) {
Titem_ *item = m_open_queue.Shift();
m_open.Pop(*item);
return item;
}
return NULL;
}
