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Location: cpp/openttd-patchpack/source/src/yapf/yapf_node.hpp - annotation
r7061:fe08da939c84
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/** @file yapf_node.hpp */
#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, bool is_choice)
{
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 */
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