+
−/* $Id$ */
+
−
+
−#ifndef  YAPF_NODE_RAIL_HPP
+
−#define  YAPF_NODE_RAIL_HPP
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−
+
−/** key for cached segment cost for rail YAPF */
+
−struct CYapfRailSegmentKey
+
−{
+
−	uint32    m_value;
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−
+
−	FORCEINLINE CYapfRailSegmentKey(const CYapfRailSegmentKey& src) : m_value(src.m_value) {}
+
−	FORCEINLINE CYapfRailSegmentKey(const CYapfNodeKeyExitDir& node_key) {Set(node_key);}
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−
+
−	FORCEINLINE void Set(const CYapfRailSegmentKey& src) {m_value = src.m_value;}
+
−	FORCEINLINE void Set(const CYapfNodeKeyExitDir& node_key) {m_value = (((int)node_key.m_tile) << 2) | node_key.m_exitdir;}
+
−
+
−	FORCEINLINE int32 CalcHash() const {return m_value;}
+
−	FORCEINLINE TileIndex GetTile() const {return (TileIndex)(m_value >> 2);}
+
−	FORCEINLINE DiagDirection GetExitDir() const {return (DiagDirection)(m_value & 3);}
+
−	FORCEINLINE bool operator == (const CYapfRailSegmentKey& other) const {return m_value == other.m_value;}
+
−};
+
−
+
−/** cached segment cost for rail YAPF */
+
−struct CYapfRailSegment
+
−{
+
−	typedef CYapfRailSegmentKey Key;
+
−
+
−	CYapfRailSegmentKey    m_key;
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−	TileIndex              m_last_tile;
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−	Trackdir               m_last_td;
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−	int                    m_cost;
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−	TileIndex              m_last_signal_tile;
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−	Trackdir               m_last_signal_td;
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−	CYapfRailSegment*      m_hash_next;
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−	union {
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−		byte                 m_flags;
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−		struct {
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−			bool                   m_end_of_line : 1;
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−		} flags_s;
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−	} flags_u;
+
−	byte m_reserve[3];
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−
+
−	FORCEINLINE CYapfRailSegment(const CYapfRailSegmentKey& key)
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−		: m_key(key)
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−		, m_last_tile(INVALID_TILE)
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−		, m_last_td(INVALID_TRACKDIR)
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−		, m_cost(-1)
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−		, m_last_signal_tile(INVALID_TILE)
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−		, m_last_signal_td(INVALID_TRACKDIR)
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−		, m_hash_next(NULL)
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−	{
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−		flags_u.m_flags = 0;
+
−	}
+
−
+
−	FORCEINLINE const Key& GetKey() const {return m_key;}
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−	FORCEINLINE TileIndex GetTile() const {return m_key.GetTile();}
+
−	FORCEINLINE DiagDirection GetExitDir() const {return m_key.GetExitDir();}
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−	FORCEINLINE CYapfRailSegment* GetHashNext() {return m_hash_next;}
+
−	FORCEINLINE void SetHashNext(CYapfRailSegment* next) {m_hash_next = next;}
+
−};
+
−
+
−/** Yapf Node for rail YAPF */
+
−template <class Tkey_>
+
−struct CYapfRailNodeT
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−	: CYapfNodeT<Tkey_, CYapfRailNodeT<Tkey_> >
+
−{
+
−	typedef CYapfNodeT<Tkey_, CYapfRailNodeT<Tkey_> > base;
+
−	typedef CYapfRailSegment CachedData;
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−
+
−	CYapfRailSegment *m_segment;
+
−	uint16            m_num_signals_passed;
+
−	union {
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−		uint32          m_inherited_flags;
+
−		struct {
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−			bool          m_targed_seen : 1;
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−			bool          m_choice_seen : 1;
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−			bool          m_last_signal_was_red : 1;
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−		} flags_s;
+
−	} flags_u;
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−	SignalType        m_last_red_signal_type;
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−
+
−	FORCEINLINE void Set(CYapfRailNodeT* parent, TileIndex tile, Trackdir td, bool is_choice)
+
−	{
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−		base::Set(parent, tile, td, is_choice);
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−		m_segment = NULL;
+
−		if (parent == NULL) {
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−			m_num_signals_passed      = 0;
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−			flags_u.m_inherited_flags = 0;
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−			m_last_red_signal_type    = SIGTYPE_NORMAL;
+
−		} else {
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−			m_num_signals_passed      = parent->m_num_signals_passed;
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−			flags_u.m_inherited_flags = parent->flags_u.m_inherited_flags;
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−			m_last_red_signal_type    = parent->m_last_red_signal_type;
+
−		}
+
−		flags_u.flags_s.m_choice_seen |= is_choice;
+
−	}
+
−
+
−	FORCEINLINE TileIndex GetLastTile() const {assert(m_segment != NULL); return m_segment->m_last_tile;}
+
−	FORCEINLINE Trackdir GetLastTrackdir() const {assert(m_segment != NULL); return m_segment->m_last_td;}
+
−	FORCEINLINE void SetLastTileTrackdir(TileIndex tile, Trackdir td) {assert(m_segment != NULL); m_segment->m_last_tile = tile; m_segment->m_last_td = td;}
+
−};
+
−
+
−// now define two major node types (that differ by key type)
+
−typedef CYapfRailNodeT<CYapfNodeKeyExitDir>  CYapfRailNodeExitDir;
+
−typedef CYapfRailNodeT<CYapfNodeKeyTrackDir> CYapfRailNodeTrackDir;
+
−
+
−// Default NodeList types
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−typedef CNodeList_HashTableT<CYapfRailNodeExitDir , 10, 12> CRailNodeListExitDir;
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−typedef CNodeList_HashTableT<CYapfRailNodeTrackDir, 12, 16> CRailNodeListTrackDir;
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−
+
−
+
−
+
−#endif /* YAPF_NODE_RAIL_HPP */