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(svn r12531) -Codechange: Rename some variables for consistency.
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/** @file yapf.h */
#ifndef YAPF_H
#define YAPF_H
#include "../debug.h"
#include "../depot_type.h"
#include "../direction_type.h"
/** Finds the best path for given ship.
* @param v the ship that needs to find a path
* @param tile the tile to find the path from (should be next tile the ship is about to enter)
* @param enterdir diagonal direction which the ship will enter this new tile from
* @param tracks available tracks on the new tile (to choose from)
* @return the best trackdir for next turn or INVALID_TRACKDIR if the path could not be found
*/
Trackdir YapfChooseShipTrack(Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks);
/** Finds the best path for given road vehicle.
* @param v the RV that needs to find a path
* @param tile the tile to find the path from (should be next tile the RV is about to enter)
* @param enterdir diagonal direction which the RV will enter this new tile from
* @return the best trackdir for next turn or INVALID_TRACKDIR if the path could not be found
*/
Trackdir YapfChooseRoadTrack(Vehicle *v, TileIndex tile, DiagDirection enterdir);
/** Finds the best path for given train.
* @param v the train that needs to find a path
* @param tile the tile to find the path from (should be next tile the train is about to enter)
* @param enterdir diagonal direction which the RV will enter this new tile from
* @param tracks available trackdirs on the new tile (to choose from)
* @param path_not_found [out] true is returned if no path can be found (returned Trackdir is only a 'guess')
* @return the best trackdir for next turn or INVALID_TRACKDIR if the path could not be found
*/
Trackdir YapfChooseRailTrack(Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found);
/** Used by RV multistop feature to find the nearest road stop that has a free slot.
* @param v RV (its current tile will be the origin)
* @param tile destination tile
* @return distance from origin tile to the destination (number of road tiles) or UINT_MAX if path not found
*/
uint YapfRoadVehDistanceToTile(const Vehicle* v, TileIndex tile);
/** Used when user sends RV to the nearest depot or if RV needs servicing.
* Returns the nearest depot (or NULL if depot was not found).
*/
Depot* YapfFindNearestRoadDepot(const Vehicle *v);
/** Used when user sends train to the nearest depot or if train needs servicing.
* @param v train that needs to go to some depot
* @param max_distance max distance (number of track tiles) from the current train position
* (used also as optimization - the pathfinder can stop path finding if max_distance
* was reached and no depot was seen)
* @param reverse_penalty penalty that should be added for the path that requires reversing the train first
* @param depot_tile receives the depot tile if depot was found
* @param reversed receives true if train needs to reversed first
* @return the true if depot was found.
*/
bool YapfFindNearestRailDepotTwoWay(Vehicle *v, int max_distance, int reverse_penalty, TileIndex* depot_tile, bool* reversed);
/** Returns true if it is better to reverse the train before leaving station */
bool YapfCheckReverseTrain(Vehicle* v);
/** Use this function to notify YAPF that track layout (or signal configuration) has change */
void YapfNotifyTrackLayoutChange(TileIndex tile, Track track);
/** performance measurement helpers */
void* NpfBeginInterval();
int NpfEndInterval(void* perf);
extern int _aystar_stats_open_size;
extern int _aystar_stats_closed_size;
/** Base tile length units */
enum {
YAPF_TILE_LENGTH = 100,
YAPF_TILE_CORNER_LENGTH = 71
};
#endif /* YAPF_H */
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