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Location: cpp/openttd-patchpack/source/src/yapf/yapf_node_rail.hpp - annotation
r6888:f2ab5d0e6596
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(svn r10131) -Fix [FS#810]: when removing a dock, a ship will always try to reach the old location of the dock even when it cannot anymore because it the old location of the dock is now land instead of water.
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/** @file yapf_node_rail.hpp */
#ifndef YAPF_NODE_RAIL_HPP
#define YAPF_NODE_RAIL_HPP
/** key for cached segment cost for rail YAPF */
struct CYapfRailSegmentKey
{
uint32 m_value;
FORCEINLINE CYapfRailSegmentKey(const CYapfRailSegmentKey& src) : m_value(src.m_value) {}
FORCEINLINE CYapfRailSegmentKey(const CYapfNodeKeyExitDir& node_key) {Set(node_key);}
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;
TileIndex m_last_tile;
Trackdir m_last_td;
int m_cost;
TileIndex m_last_signal_tile;
Trackdir m_last_signal_td;
CYapfRailSegment* m_hash_next;
union {
byte m_flags;
struct {
bool m_end_of_line : 1;
} flags_s;
} flags_u;
byte m_reserve[3];
FORCEINLINE CYapfRailSegment(const CYapfRailSegmentKey& key)
: m_key(key)
, m_last_tile(INVALID_TILE)
, m_last_td(INVALID_TRACKDIR)
, m_cost(-1)
, m_last_signal_tile(INVALID_TILE)
, m_last_signal_td(INVALID_TRACKDIR)
, m_hash_next(NULL)
{
flags_u.m_flags = 0;
}
FORCEINLINE const Key& GetKey() const {return m_key;}
FORCEINLINE TileIndex GetTile() const {return m_key.GetTile();}
FORCEINLINE DiagDirection GetExitDir() const {return m_key.GetExitDir();}
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
: CYapfNodeT<Tkey_, CYapfRailNodeT<Tkey_> >
{
typedef CYapfNodeT<Tkey_, CYapfRailNodeT<Tkey_> > base;
typedef CYapfRailSegment CachedData;
CYapfRailSegment *m_segment;
uint16 m_num_signals_passed;
union {
uint32 m_inherited_flags;
struct {
bool m_targed_seen : 1;
bool m_choice_seen : 1;
bool m_last_signal_was_red : 1;
} flags_s;
} flags_u;
SignalType m_last_red_signal_type;
FORCEINLINE void Set(CYapfRailNodeT* parent, TileIndex tile, Trackdir td, bool is_choice)
{
base::Set(parent, tile, td, is_choice);
m_segment = NULL;
if (parent == NULL) {
m_num_signals_passed = 0;
flags_u.m_inherited_flags = 0;
m_last_red_signal_type = SIGTYPE_NORMAL;
} else {
m_num_signals_passed = parent->m_num_signals_passed;
flags_u.m_inherited_flags = parent->flags_u.m_inherited_flags;
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
typedef CNodeList_HashTableT<CYapfRailNodeExitDir , 10, 12> CRailNodeListExitDir;
typedef CNodeList_HashTableT<CYapfRailNodeTrackDir, 12, 16> CRailNodeListTrackDir;
#endif /* YAPF_NODE_RAIL_HPP */
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