a2dec6c32a
- Supports trains, road vehicles and ships. - Uses A* pathfinding (same codebase as the new ai). - Currently unlimited search depth, so might perform badly on large maps/networks (especially ships). - Will always find a route if there is one. - Allows custom penalties for obstacles to be set in openttd.cfg (npf_ values). - With NPF enabled, ships can have orders that are very far apart. Be careful, this will break (ships get lost) when the old pathfinder is used again. - Feature: Disabling 90 degree turns for trains and ships. - Requires NPF to be enabled. - Ships and trains can no longer make weird 90 degree turns on tile borders. - Codechange: Removed table/directions.h. - table/directions.h contained ugly static tables but was included more than once. The tables, along with a few new ones are in npf.[ch] now. Better suggestions for a location? - Fix: Binary heap in queue.c did not allocate enough space, resulting in a segfault. - Codechange: Rewritten FindFirstBit2x64, added KillFirstBit2x64. - Codechange: Introduced constant INVALID_TILE, to replace the usage of 0 as an invalid tile. Also replaces TILE_WRAPPED. - Codechange: Moved TileAddWrap() to map.[ch] - Add TileIndexDiffCByDir(), TileIndexDiffCByDir(). - Codechange: Moved IsTrainStationTile() to station.h - Add: IsRoadStationTile() and GetRoadStationDir().
129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
#ifndef NPF_H
|
|
#define NPF_H
|
|
|
|
#include "ttd.h"
|
|
#include "aystar.h"
|
|
#include "vehicle.h"
|
|
|
|
//#define NPF_DEBUG
|
|
//#define NPF_MARKROUTE //Mark the routes considered by the pathfinder by
|
|
//mowing grass
|
|
|
|
typedef struct NPFFindStationOrTileData { /* Meant to be stored in AyStar.targetdata */
|
|
TileIndex dest_coords; /* An indication of where the station is, for heuristic purposes, or the target tile */
|
|
int station_index; /* station index we're heading for, or -1 when we're heading for a tile */
|
|
} NPFFindStationOrTileData;
|
|
|
|
enum { /* Indices into AyStar.userdata[] */
|
|
NPF_TYPE = 0, /* Contains an TransportTypes value */
|
|
};
|
|
|
|
enum { /* Indices into AyStarNode.userdata[] */
|
|
NPF_TRACKDIR_CHOICE = 0, /* The trackdir chosen to get here */
|
|
NPF_NODE_FLAGS,
|
|
};
|
|
enum { /* Flags for AyStarNode.userdata[NPF_NODE_FLAGS]*/
|
|
NPF_FLAG_SEEN_SIGNAL = 1, /* Used to mark that a signal was seen on the way, for rail only */
|
|
NPF_FLAG_REVERSE = 2, /* Used to mark that this node was reached from the second start node, if applicable */
|
|
};
|
|
|
|
typedef struct NPFFoundTargetData { /* Meant to be stored in AyStar.userpath */
|
|
uint best_bird_dist; /* The best heuristic found. Is 0 if the target was found */
|
|
uint best_path_dist; /* The shortest path. Is (uint)-1 if no path is found */
|
|
byte best_trackdir; /* The trackdir that leads to the shortes path/closest birds dist */
|
|
AyStarNode node; /* The node within the target the search led us to */
|
|
} NPFFoundTargetData;
|
|
|
|
/* These functions below are _not_ re-entrant, in favor of speed! */
|
|
|
|
/* Will search from the given tile and direction, for a route to the given
|
|
* station for the given transport type. See the declaration of
|
|
* NPFFoundTargetData above for the meaning of the result. */
|
|
NPFFoundTargetData NPFRouteToStationOrTile(TileIndex tile, byte trackdir, NPFFindStationOrTileData* target, TransportType type);
|
|
/* Will search as above, but with two start nodes, the second being the
|
|
* reverse. Look at the NPF_NODE_REVERSE flag in the result node to see which
|
|
* direction was taken */
|
|
NPFFoundTargetData NPFRouteToStationOrTileTwoWay(TileIndex tile1, byte trackdir1, TileIndex tile2, byte trackdir2, NPFFindStationOrTileData* target, TransportType type);
|
|
|
|
/* Will search a route to the closest depot. */
|
|
|
|
/* Search using breadth first. Good for little track choice and inaccurate
|
|
* heuristic, such as railway/road */
|
|
NPFFoundTargetData NPFRouteToDepotBreadthFirst(TileIndex tile, byte trackdir, TransportType type);
|
|
/* Search by trying each depot in order of Manhattan Distance. Good for lots
|
|
* of choices and accurate heuristics, such as water */
|
|
NPFFoundTargetData NPFRouteToDepotTrialError(TileIndex tile, byte trackdir, TransportType type);
|
|
|
|
void NPFFillWithOrderData(NPFFindStationOrTileData* fstd, Vehicle* v);
|
|
|
|
/*
|
|
* Some tables considering tracks, directions and signals.
|
|
* XXX: Better place to but these?
|
|
*/
|
|
|
|
/**
|
|
* Maps a trackdir to the bit that stores its status in the map arrays, in the
|
|
* direction along with the trackdir.
|
|
*/
|
|
const byte _signal_along_trackdir[14];
|
|
|
|
/**
|
|
* Maps a trackdir to the bit that stores its status in the map arrays, in the
|
|
* direction against the trackdir.
|
|
*/
|
|
const byte _signal_against_trackdir[14];
|
|
|
|
/**
|
|
* Maps a trackdir to the trackdirs that can be reached from it (ie, when
|
|
* entering the next tile.
|
|
*/
|
|
const uint16 _trackdir_reaches_trackdirs[14];
|
|
|
|
/**
|
|
* Maps a trackdir to all trackdirs that make 90 deg turns with it.
|
|
*/
|
|
const uint16 _trackdir_crosses_trackdirs[14];
|
|
|
|
/**
|
|
* Maps a track to all tracks that make 90 deg turns with it.
|
|
*/
|
|
const byte _track_crosses_tracks[6];
|
|
|
|
/**
|
|
* Maps a trackdir to the (4-way) direction the tile is exited when following
|
|
* that trackdir.
|
|
*/
|
|
const byte _trackdir_to_exitdir[14];
|
|
|
|
/**
|
|
* Maps a track and an (4-way) dir to the trackdir that represents the track
|
|
* with the exit in the given direction.
|
|
*/
|
|
const byte _track_exitdir_to_trackdir[6][4];
|
|
|
|
/**
|
|
* Maps a track and a full (8-way) direction to the trackdir that represents
|
|
* the track running in the given direction.
|
|
*/
|
|
const byte _track_direction_to_trackdir[6][8];
|
|
|
|
/**
|
|
* Maps a (4-way) direction to the diagonal track that runs in that
|
|
* direction.
|
|
*/
|
|
const byte _dir_to_diag_trackdir[4];
|
|
|
|
/**
|
|
* Maps a (4-way) direction to the reverse.
|
|
*/
|
|
const byte _reverse_dir[4];
|
|
|
|
/**
|
|
* Maps a trackdir to the reverse trackdir.
|
|
*/
|
|
const byte _reverse_trackdir[14];
|
|
|
|
#define REVERSE_TRACKDIR(trackdir) (trackdir ^ 0x8)
|
|
|
|
#endif // NPF_H
|