diff options
Diffstat (limited to 'src/pathfinder/opf')
-rw-r--r-- | src/pathfinder/opf/opf_ship.cpp | 5 | ||||
-rw-r--r-- | src/pathfinder/opf/opf_ship.h | 3 |
2 files changed, 6 insertions, 2 deletions
diff --git a/src/pathfinder/opf/opf_ship.cpp b/src/pathfinder/opf/opf_ship.cpp index 2fef03e12..cb96f4cf8 100644 --- a/src/pathfinder/opf/opf_ship.cpp +++ b/src/pathfinder/opf/opf_ship.cpp @@ -183,7 +183,7 @@ bad:; * reverse. The tile given is the tile we are about to enter, enterdir is the * direction in which we are entering the tile */ -Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks) +Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found) { assert(IsValidDiagDirection(enterdir)); @@ -202,6 +202,9 @@ Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, /* And if we would not reverse? */ uint dist = FindShipTrack(v, tile, enterdir, tracks, 0, &track); + /* If the dist equals zero, or distr equals one (the extra reversing penalty), + * then we found our destination and we are not lost. */ + path_found = (dist == 0 || distr == 1); if (dist <= distr) return track; return INVALID_TRACK; // We could better reverse } diff --git a/src/pathfinder/opf/opf_ship.h b/src/pathfinder/opf/opf_ship.h index b124ce34e..62668b206 100644 --- a/src/pathfinder/opf/opf_ship.h +++ b/src/pathfinder/opf/opf_ship.h @@ -23,8 +23,9 @@ * @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) + * @param path_found [out] Whether a path has been found (true) or has been guessed (false) * @return the best trackdir for next turn or INVALID_TRACK if the path could not be found */ -Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks); +Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found); #endif /* OPF_SHIP_H */ |