(svn r18367) -Codechange: unify the ship pathfinder 'calls'

src/pathfinder/npf/npf.cpp

@@ -19,6 +19,7 @@
 #include "../../tunnelbridge.h"
 #include "../../pbs.h"
 #include "../../train.h"
+#include "../../ship.h"
 #include "../pathfinder_func.h"
 #include "npf.h"
 
@@ -1118,3 +1119,23 @@ void NPFFillWithOrderData(NPFFindStationOrTileData *fstd, Vehicle *v, bool reser
 	fstd->reserve_path = reserve_path;
 	fstd->v = v;
 }
+
+/*** Ships ***/
+
+Track NPFShipChooseTrack(Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks)
+{
+	NPFFindStationOrTileData fstd;
+	Trackdir trackdir = v->GetVehicleTrackdir();
+	assert(trackdir != INVALID_TRACKDIR); // Check that we are not in a depot
+
+	NPFFillWithOrderData(&fstd, v);
+
+	NPFFoundTargetData ftd = NPFRouteToStationOrTile(tile - TileOffsByDiagDir(enterdir), trackdir, true, &fstd, TRANSPORT_WATER, 0, v->owner, INVALID_RAILTYPES);
+
+	/* If ftd.best_bird_dist is 0, we found our target and ftd.best_trackdir contains
+		* the direction we need to take to get there, if ftd.best_bird_dist is not 0,
+		* we did not find our target, but ftd.best_trackdir contains the direction leading
+		* to the tile closest to our target. */
+	if (ftd.best_trackdir == 0xff) return INVALID_TRACK;
+	return TrackdirToTrack(ftd.best_trackdir);
+}

src/pathfinder/npf/npf_func.h

@@ -0,0 +1,17 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file npf_func.h Functions to access the new pathfinder. */
+
+#ifndef NPF_FUNC_H
+#define NPF_FUNC_H
+
+Track NPFShipChooseTrack(class Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks);
+
+#endif /* NPF_FUNC_H */