diff options
Diffstat (limited to 'npf.h')
| -rw-r--r-- | npf.h | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -14,6 +14,17 @@ enum { NPF_HASH_HALFMASK = (1 << NPF_HASH_HALFBITS) - 1 }; +enum { + /** This penalty is the equivalent of "inifite", which means that paths that + * get this penalty will be chosen, but only if there is no other route + * without it. Be careful with not applying this penalty to often, or the + * total path cost might overflow.. + * For now, this is just a Very Big Penalty, we might actually implement + * this in a nicer way :-) + */ + NPF_INFINITE_PENALTY = 1000 * NPF_TILE_LENGTH +}; + 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 */ @@ -62,8 +73,15 @@ NPFFoundTargetData NPFRouteToStationOrTileTwoWay(TileIndex tile1, byte trackdir1 /* Will search a route to the closest depot. */ /* Search using breadth first. Good for little track choice and inaccurate - * heuristic, such as railway/road */ + * heuristic, such as railway/road.*/ NPFFoundTargetData NPFRouteToDepotBreadthFirst(TileIndex tile, byte trackdir, TransportType type, Owner owner); +/* Same as above but with two start nodes, the second being the reverse. Call + * NPFGetBit(result.node, NPF_FLAG_REVERSE) to see from which node the path + * orginated. All pathfs from the second node will have the given + * reverse_penalty applied (NPF_TILE_LENGTH is the equivalent of one full + * tile). + */ +NPFFoundTargetData NPFRouteToDepotBreadthFirstTwoWay(TileIndex tile1, byte trackdir1, TileIndex tile2, byte trackdir2, TransportType type, Owner owner, uint reverse_penalty); /* 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, Owner owner); |