--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yapf/yapf_node.hpp	Sat May 27 16:12:16 2006 +0000
@@ -0,0 +1,77 @@
+/* $Id$ */
+
+#ifndef  YAPF_NODE_HPP
+#define  YAPF_NODE_HPP
+
+/** Yapf Node Key that evaluates hash from (and compares) tile & exit dir. */
+struct CYapfNodeKeyExitDir {
+	TileIndex      m_tile;
+	Trackdir       m_td;
+	DiagDirection  m_exitdir;
+
+	FORCEINLINE void Set(TileIndex tile, Trackdir td)
+	{
+		m_tile = tile;
+		m_td = td;
+		m_exitdir = (m_td == INVALID_TRACKDIR) ? INVALID_DIAGDIR : TrackdirToExitdir(m_td);
+	}
+
+	FORCEINLINE int CalcHash() const {return m_exitdir | (m_tile << 2);}
+	FORCEINLINE bool operator == (const CYapfNodeKeyExitDir& other) const {return (m_tile == other.m_tile) && (m_exitdir == other.m_exitdir);}
+};
+
+struct CYapfNodeKeyTrackDir : public CYapfNodeKeyExitDir
+{
+	FORCEINLINE int CalcHash() const {return m_td | (m_tile << 4);}
+	FORCEINLINE bool operator == (const CYapfNodeKeyTrackDir& other) const {return (m_tile == other.m_tile) && (m_td == other.m_td);}
+};
+
+/** Yapf Node base */
+template <class Tkey_, class Tnode>
+struct CYapfNodeT {
+	typedef Tkey_ Key;
+	typedef Tnode Node;
+
+	Tkey_       m_key;
+	Node       *m_hash_next;
+	Node       *m_parent;
+	int         m_cost;
+	int         m_estimate;
+
+	FORCEINLINE void Set(Node *parent, TileIndex tile, Trackdir td)
+	{
+		m_key.Set(tile, td);
+		m_hash_next = NULL;
+		m_parent = parent;
+		m_cost = 0;
+		m_estimate = 0;
+	}
+
+	FORCEINLINE Node* GetHashNext() {return m_hash_next;}
+	FORCEINLINE void SetHashNext(Node *pNext) {m_hash_next = pNext;}
+	FORCEINLINE TileIndex GetTile() const {return m_key.m_tile;}
+	FORCEINLINE Trackdir GetTrackdir() const {return m_key.m_td;}
+	FORCEINLINE const Tkey_& GetKey() const {return m_key;}
+	FORCEINLINE int GetCost() {return m_cost;}
+	FORCEINLINE int GetCostEstimate() {return m_estimate;}
+	FORCEINLINE bool operator < (const Node& other) const {return m_estimate < other.m_estimate;}
+};
+
+/** Yapf Node for ships */
+template <class Tkey_>
+struct CYapfShipNodeT
+	: CYapfNodeT<Tkey_, CYapfShipNodeT<Tkey_> >
+{
+
+};
+
+// now define two major node types (that differ by key type)
+typedef CYapfShipNodeT<CYapfNodeKeyExitDir>  CYapfShipNodeExitDir;
+typedef CYapfShipNodeT<CYapfNodeKeyTrackDir> CYapfShipNodeTrackDir;
+
+// Default NodeList types
+typedef CNodeList_HashTableT<CYapfShipNodeExitDir , 14, 16> CShipNodeListExitDir;
+typedef CNodeList_HashTableT<CYapfShipNodeTrackDir, 16, 20> CShipNodeListTrackDir;
+
+
+#endif /* YAPF_NODE_HPP */