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/* $Id$ */
#ifndef YAPF_COMMON_HPP
#define YAPF_COMMON_HPP
template <class Types>
class CYapfOriginTileT
{
public:
typedef typename Types::Tpf Tpf;
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
protected:
TileIndex m_orgTile;
TrackdirBits m_orgTrackdirs;
FORCEINLINE Tpf& Yapf() {return *static_cast<Tpf*>(this);}
public:
void SetOrigin(TileIndex tile, TrackdirBits trackdirs)
{
m_orgTile = tile;
m_orgTrackdirs = trackdirs;
}
void PfSetStartupNodes()
{
for (TrackdirBits tdb = m_orgTrackdirs; tdb != TRACKDIR_BIT_NONE; tdb = (TrackdirBits)KillFirstBit2x64(tdb)) {
Trackdir td = (Trackdir)FindFirstBit2x64(tdb);
Node& n1 = Yapf().CreateNewNode();
n1.Set(NULL, m_orgTile, td);
Yapf().AddStartupNode(n1);
}
}
};
template <class Types>
class CYapfOriginTileTwoWayT
{
public:
typedef typename Types::Tpf Tpf;
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
protected:
TileIndex m_orgTile;
Trackdir m_orgTd;
TileIndex m_revTile;
Trackdir m_revTd;
int m_reverse_penalty;
bool m_treat_first_red_two_way_signal_as_eol;
FORCEINLINE Tpf& Yapf() {return *static_cast<Tpf*>(this);}
public:
void SetOrigin(TileIndex tile, Trackdir td, TileIndex tiler = INVALID_TILE, Trackdir tdr = INVALID_TRACKDIR, int reverse_penalty = 0, bool treat_first_red_two_way_signal_as_eol = true)
{
m_orgTile = tile;
m_orgTd = td;
m_revTile = tiler;
m_revTd = tdr;
m_reverse_penalty = reverse_penalty;
m_treat_first_red_two_way_signal_as_eol = treat_first_red_two_way_signal_as_eol;
}
void PfSetStartupNodes()
{
if (m_orgTile != INVALID_TILE && m_orgTd != INVALID_TRACKDIR) {
Node& n1 = Yapf().CreateNewNode();
n1.Set(NULL, m_orgTile, m_orgTd);
Yapf().AddStartupNode(n1);
}
if (m_revTile != INVALID_TILE && m_revTd != INVALID_TRACKDIR) {
Node& n2 = Yapf().CreateNewNode();
n2.Set(NULL, m_revTile, m_revTd);
n2.m_cost = m_reverse_penalty;
Yapf().AddStartupNode(n2);
}
}
FORCEINLINE bool TreatFirstRedTwoWaySignalAsEOL()
{
return Yapf().PfGetSettings().rail_firstred_twoway_eol && m_treat_first_red_two_way_signal_as_eol;
}
};
template <class Types>
class CYapfDestinationTileT
{
public:
typedef typename Types::Tpf Tpf;
typedef typename Types::NodeList::Titem Node; ///< this will be our node type
typedef typename Node::Key Key; ///< key to hash tables
protected:
TileIndex m_destTile;
TrackdirBits m_destTrackdirs;
public:
void SetDestination(TileIndex tile, TrackdirBits trackdirs)
{
m_destTile = tile;
m_destTrackdirs = trackdirs;
}
protected:
Tpf& Yapf() {return *static_cast<Tpf*>(this);}
public:
FORCEINLINE bool PfDetectDestination(Node& n)
{
bool bDest = (n.m_key.m_tile == m_destTile) && ((m_destTrackdirs & TrackdirToTrackdirBits(n.GetTrackdir())) != TRACKDIR_BIT_NONE);
return bDest;
}
inline bool PfCalcEstimate(Node& n)
{
int dx = abs(TileX(n.GetTile()) - TileX(m_destTile));
int dy = abs(TileY(n.GetTile()) - TileY(m_destTile));
assert(dx >= 0 && dy >= 0);
int dd = min(dx, dy);
int dxy = abs(dx - dy);
int d = 14 * dd + 10 * dxy;
n.m_estimate = n.m_cost + d /*+ d / 8*/;
return true;
}
};
template <class Ttypes>
class CYapfT
: public Ttypes::PfBase
, public Ttypes::PfCost
, public Ttypes::PfCache
, public Ttypes::PfOrigin
, public Ttypes::PfDestination
, public Ttypes::PfFollow
{
};
#endif /* YAPF_COMMON_HPP */
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