Node Follower module of YAPF for ships. More...

Public Types
typedef Types::Tpf	Tpf
	the pathfinder class (derived from THIS class).

typedef Types::TrackFollower	TrackFollower

typedef Types::NodeList::Item	Node
	this will be our node type.

typedef Node::Key	Key
	key to hash tables.

Public Member Functions
void	PfFollowNode (Node &old_node)
	Called by YAPF to move from the given node to the next tile.

void	RestrictSearch (const std::vector< WaterRegionPatchDesc > &path)
	Restricts the search by creating corridor or water regions through which the ship is allowed to travel.

char	TransportTypeChar () const
	Return debug report character to identify the transportation type.

Static Public Member Functions
static Trackdir	GetRandomTrackdir (TrackdirBits trackdirs)
	Returns a random trackdir out of a set of trackdirs.

static std::pair< TileIndex, Trackdir >	GetRandomFollowUpTileTrackdir (const Ship *v, TileIndex tile, Trackdir dir)
	Returns a random tile/trackdir that can be reached from the current tile/trackdir, or tile/INVALID_TRACK if none is available.

static Trackdir	CreateRandomPath (const Ship *v, ShipPathCache &path_cache, int path_length)
	Creates a random path, avoids 90 degree turns.

static Trackdir	ChooseShipTrack (const Ship *v, TileIndex tile, TrackdirBits forward_dirs, TrackdirBits reverse_dirs, bool &path_found, ShipPathCache &path_cache, Trackdir &best_origin_dir)

static bool	CheckShipReverse (const Ship v, Trackdir trackdir)
	Check whether a ship should reverse to reach its destination.

Protected Member Functions
Tpf &	Yapf ()
	to access inherited path finder

Protected Attributes
std::vector< WaterRegionDesc >	water_region_corridor

Detailed Description

template<class Types>
class CYapfFollowShipT< Types >

Node Follower module of YAPF for ships.

Definition at line 126 of file yapf_ship.cpp.

Member Typedef Documentation

◆ Key

template<class Types >

typedef Node::Key CYapfFollowShipT< Types >::Key

key to hash tables.

Definition at line 132 of file yapf_ship.cpp.

◆ Node

template<class Types >

typedef Types::NodeList::Item CYapfFollowShipT< Types >::Node

this will be our node type.

Definition at line 131 of file yapf_ship.cpp.

◆ Tpf

template<class Types >

typedef Types::Tpf CYapfFollowShipT< Types >::Tpf

the pathfinder class (derived from THIS class).

Definition at line 129 of file yapf_ship.cpp.

◆ TrackFollower

template<class Types >

typedef Types::TrackFollower CYapfFollowShipT< Types >::TrackFollower

Definition at line 130 of file yapf_ship.cpp.

Member Function Documentation

◆ CheckShipReverse()

template<class Types >

static bool CYapfFollowShipT< Types >::CheckShipReverse	(	const Ship *	v,
		Trackdir *	trackdir
	)

inlinestatic

Check whether a ship should reverse to reach its destination.

Called when leaving depot.

Parameters

v	Ship.
trackdir	[out] the best of all possible reversed trackdirs.

Returns: true if the reverse direction is better.

Definition at line 302 of file yapf_ship.cpp.

References DiagdirReachesTrackdirs(), Vehicle::direction, CYapfFollowShipT< Types >::GetRandomTrackdir(), GetTileTrackStatus(), Ship::GetVehicleTrackdir(), INVALID_TRACKDIR, ReverseDiagDir(), ReverseTrackdir(), Ship::state, Vehicle::tile, TRACKDIR_BIT_NONE, TrackdirToTrackdirBits(), TrackStatusToTrackdirBits(), TRANSPORT_WATER, and VehicleExitDir().

◆ ChooseShipTrack()

template<class Types >

static Trackdir CYapfFollowShipT< Types >::ChooseShipTrack	(	const Ship *	v,
		TileIndex	tile,
		TrackdirBits	forward_dirs,
		TrackdirBits	reverse_dirs,
		bool &	path_found,
		ShipPathCache &	path_cache,
		Trackdir &	best_origin_dir
	)

inlinestatic

Definition at line 214 of file yapf_ship.cpp.

◆ CreateRandomPath()

template<class Types >

static Trackdir CYapfFollowShipT< Types >::CreateRandomPath	(	const Ship *	v,
		ShipPathCache &	path_cache,
		int	path_length
	)

inlinestatic

Creates a random path, avoids 90 degree turns.

Definition at line 195 of file yapf_ship.cpp.

References Vehicle::first, CYapfFollowShipT< Types >::GetRandomFollowUpTileTrackdir(), Ship::GetVehicleTrackdir(), INVALID_TRACKDIR, and Vehicle::tile.

◆ GetRandomFollowUpTileTrackdir()

template<class Types >

static std::pair< TileIndex, Trackdir > CYapfFollowShipT< Types >::GetRandomFollowUpTileTrackdir	(	const Ship *	v,
		TileIndex	tile,
		Trackdir	dir
	)

inlinestatic

Returns a random tile/trackdir that can be reached from the current tile/trackdir, or tile/INVALID_TRACK if none is available.

Definition at line 182 of file yapf_ship.cpp.

References CYapfFollowShipT< Types >::GetRandomTrackdir(), INVALID_TRACKDIR, and TRACKDIR_BIT_NONE.

Referenced by CYapfFollowShipT< Types >::CreateRandomPath().

◆ GetRandomTrackdir()

template<class Types >

static Trackdir CYapfFollowShipT< Types >::GetRandomTrackdir ( TrackdirBits trackdirs )

inlinestatic

Returns a random trackdir out of a set of trackdirs.

Definition at line 174 of file yapf_ship.cpp.

References CountBits(), FindFirstTrackdir(), RandomRange(), and RemoveFirstTrackdir().

Referenced by CYapfFollowShipT< Types >::CheckShipReverse(), and CYapfFollowShipT< Types >::GetRandomFollowUpTileTrackdir().

◆ PfFollowNode()

template<class Types >

void CYapfFollowShipT< Types >::PfFollowNode ( Node & old_node )

inline

Called by YAPF to move from the given node to the next tile.

For each reachable trackdir on the new tile creates new node, initializes it and adds it to the open list by calling Yapf().AddNewNode(n)

Definition at line 149 of file yapf_ship.cpp.

References GetWaterRegionInfo(), and CYapfFollowShipT< Types >::Yapf().

◆ RestrictSearch()

template<class Types >

void CYapfFollowShipT< Types >::RestrictSearch ( const std::vector< WaterRegionPatchDesc > & path )

inline

Restricts the search by creating corridor or water regions through which the ship is allowed to travel.

Definition at line 161 of file yapf_ship.cpp.

◆ TransportTypeChar()

template<class Types >

char CYapfFollowShipT< Types >::TransportTypeChar ( ) const

inline

Return debug report character to identify the transportation type.

Definition at line 168 of file yapf_ship.cpp.

◆ Yapf()

template<class Types >

Tpf & CYapfFollowShipT< Types >::Yapf ( )

inlineprotected

to access inherited path finder

Definition at line 136 of file yapf_ship.cpp.

Referenced by CYapfFollowShipT< Types >::PfFollowNode().

Field Documentation

◆ water_region_corridor

template<class Types >

std::vector<WaterRegionDesc> CYapfFollowShipT< Types >::water_region_corridor

protected

Definition at line 141 of file yapf_ship.cpp.

The documentation for this class was generated from the following file:

src/pathfinder/yapf/yapf_ship.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ Key

◆ Node

◆ Tpf

◆ TrackFollower

Member Function Documentation

◆ CheckShipReverse()

◆ ChooseShipTrack()

◆ CreateRandomPath()

◆ GetRandomFollowUpTileTrackdir()

◆ GetRandomTrackdir()

◆ PfFollowNode()

◆ RestrictSearch()

◆ TransportTypeChar()

◆ Yapf()

Field Documentation

◆ water_region_corridor