(svn r24964) -Fix [FS#5416]: With YAPF the docking behaviour differed per direction; now favour docking in the direction you approached

src/pathfinder/yapf/yapf_ship.cpp

@@ -58,9 +58,12 @@ public:
 		if (tile == v->dest_tile) {
 			/* convert tracks to trackdirs */
 			TrackdirBits trackdirs = (TrackdirBits)(tracks | ((int)tracks << 8));
-			/* choose any trackdir reachable from enterdir */
+			/* limit to trackdirs reachable from enterdir */
 			trackdirs &= DiagdirReachesTrackdirs(enterdir);
-			return (Trackdir)FindFirstBit2x64(trackdirs);
+
+			/* use vehicle's current direction if that's possible, otherwise use first usable one. */
+			Trackdir veh_dir = v->GetVehicleTrackdir();
+			return ((trackdirs & TrackdirToTrackdirBits(veh_dir)) != 0) ? veh_dir : (Trackdir)FindFirstBit2x64(trackdirs);
 		}
 
 		/* move back to the old tile/trackdir (where ship is coming from) */