yapf_road.cpp File Reference

The road pathfinding. More...

#include "../../stdafx.h"
#include "yapf.hpp"
#include "yapf_node_road.hpp"
#include "../../roadstop_base.h"
#include "../../safeguards.h"

Go to the source code of this file.

Data Structures
class	CYapfCostRoadT< Types >
class	CYapfDestinationAnyDepotRoadT< Types >
class	CYapfDestinationTileRoadT< Types >
class	CYapfFollowRoadT< Types >
struct	CYapfRoad_TypesT< Tpf_, Tdestination >
struct	CYapfRoad
struct	CYapfRoadAnyDepot

Functions
Trackdir	YapfRoadVehicleChooseTrack (const RoadVehicle *v, TileIndex tile, DiagDirection enterdir, TrackdirBits trackdirs, bool &path_found, RoadVehPathCache &path_cache)
	Finds the best path for given road vehicle using YAPF.
FindDepotData	YapfRoadVehicleFindNearestDepot (const RoadVehicle *v, int max_distance)
	Used when user sends road vehicle to the nearest depot or if road vehicle needs servicing using YAPF.

Detailed Description

The road pathfinding.

Definition in file yapf_road.cpp.

Function Documentation

YapfRoadVehicleChooseTrack()

Trackdir YapfRoadVehicleChooseTrack	(	const RoadVehicle *	v,
		TileIndex	tile,
		DiagDirection	enterdir,
		TrackdirBits	trackdirs,
		bool &	path_found,
		RoadVehPathCache &	path_cache )

Finds the best path for given road vehicle using YAPF.

Parameters

v	the RV that needs to find a path
tile	the tile to find the path from (should be next tile the RV is about to enter)
enterdir	diagonal direction which the RV will enter this new tile from
trackdirs	available trackdirs on the new tile (to choose from)
path_found	[out] Whether a path has been found (true) or has been guessed (false)
path_cache	Cache of a previously chosen path.

Returns

the best trackdir for next turn or INVALID_TRACKDIR if the path could not be found

Definition at line 508 of file yapf_road.cpp.

References FindFirstBit(), and INVALID_TRACKDIR.

Referenced by RoadFindPathToDest().

YapfRoadVehicleFindNearestDepot()

FindDepotData YapfRoadVehicleFindNearestDepot	(	const RoadVehicle *	v,
		int	max_penalty )

Used when user sends road vehicle to the nearest depot or if road vehicle needs servicing using YAPF.

Parameters

v	vehicle that needs to go to some depot
max_penalty	max distance (in pathfinder penalty) from the current vehicle position (used also as optimization - the pathfinder can stop path finding if max_penalty was reached and no depot was seen)

Returns

the data about the depot

Definition at line 515 of file yapf_road.cpp.

References GetTrackdirBitsForRoad(), RoadVehicle::GetVehicleTrackdir(), HasTrackdir(), RoadVehicle::roadtype, and Vehicle::tile.