1 files changed, 0 insertions, 645 deletions
diff --git a/src/yapf/yapf_rail.cpp b/src/yapf/yapf_rail.cpp
deleted file mode 100644
index c7c1e500b..000000000
--- a/src/yapf/yapf_rail.cpp
+++ /dev/null
@@ -1,645 +0,0 @@
-/* $Id$ */
-
-/*
- * 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 yapf_rail.cpp The rail pathfinding. */
-
-#include "../stdafx.h"
-
-#include "yapf.hpp"
-#include "yapf_node_rail.hpp"
-#include "yapf_costrail.hpp"
-#include "yapf_destrail.hpp"
-#include "../functions.h"
-
-#define DEBUG_YAPF_CACHE 0
-
-#if DEBUG_YAPF_CACHE
-template <typename Tpf> void DumpState(Tpf &pf1, Tpf &pf2)
-{
-	DumpTarget dmp1, dmp2;
-	pf1.DumpBase(dmp1);
-	pf2.DumpBase(dmp2);
-	FILE *f1 = fopen("yapf1.txt", "wt");
-	FILE *f2 = fopen("yapf2.txt", "wt");
-	fwrite(dmp1.m_out.Data(), 1, dmp1.m_out.Size(), f1);
-	fwrite(dmp2.m_out.Data(), 1, dmp2.m_out.Size(), f2);
-	fclose(f1);
-	fclose(f2);
-}
-#endif
-
-int _total_pf_time_us = 0;
-
-template <class Types>
-class CYapfReserveTrack
-{
-public:
-	typedef typename Types::Tpf Tpf;                     ///< the pathfinder class (derived from THIS class)
-	typedef typename Types::TrackFollower TrackFollower;
-	typedef typename Types::NodeList::Titem Node;        ///< this will be our node type
-
-protected:
-	/** to access inherited pathfinder */
-	FORCEINLINE Tpf& Yapf()
-	{
-		return *static_cast<Tpf*>(this);
-	}
-
-private:
-	TileIndex m_res_dest;         ///< The reservation target tile
-	Trackdir  m_res_dest_td;      ///< The reservation target trackdir
-	Node      *m_res_node;        ///< The reservation target node
-	TileIndex m_res_fail_tile;    ///< The tile where the reservation failed
-	Trackdir  m_res_fail_td;      ///< The trackdir where the reservation failed
-
-	bool FindSafePositionProc(TileIndex tile, Trackdir td)
-	{
-		if (IsSafeWaitingPosition(Train::From(Yapf().GetVehicle()), tile, td, true, !TrackFollower::Allow90degTurns())) {
-			m_res_dest = tile;
-			m_res_dest_td = td;
-			return false;   // Stop iterating segment
-		}
-		return true;
-	}
-
-	/** Reserve a railway platform. Tile contains the failed tile on abort. */
-	bool ReserveRailStationPlatform(TileIndex &tile, DiagDirection dir)
-	{
-		TileIndex     start = tile;
-		TileIndexDiff diff = TileOffsByDiagDir(dir);
-
-		do {
-			if (HasStationReservation(tile)) return false;
-			SetRailStationReservation(tile, true);
-			MarkTileDirtyByTile(tile);
-			tile = TILE_ADD(tile, diff);
-		} while (IsCompatibleTrainStationTile(tile, start));
-
-		return true;
-	}
-
-	/** Try to reserve a single track/platform. */
-	bool ReserveSingleTrack(TileIndex tile, Trackdir td)
-	{
-		if (IsRailStationTile(tile)) {
-			if (!ReserveRailStationPlatform(tile, TrackdirToExitdir(ReverseTrackdir(td)))) {
-				/* Platform could not be reserved, undo. */
-				m_res_fail_tile = tile;
-				m_res_fail_td = td;
-			}
-		} else {
-			if (!TryReserveRailTrack(tile, TrackdirToTrack(td))) {
-				/* Tile couldn't be reserved, undo. */
-				m_res_fail_tile = tile;
-				m_res_fail_td = td;
-				return false;
-			}
-		}
-
-		return tile != m_res_dest || td != m_res_dest_td;
-	}
-
-	/** Unreserve a single track/platform. Stops when the previous failer is reached. */
-	bool UnreserveSingleTrack(TileIndex tile, Trackdir td)
-	{
-		if (IsRailStationTile(tile)) {
-			TileIndex     start = tile;
-			TileIndexDiff diff = TileOffsByDiagDir(TrackdirToExitdir(ReverseTrackdir(td)));
-			while ((tile != m_res_fail_tile || td != m_res_fail_td) && IsCompatibleTrainStationTile(tile, start)) {
-				SetRailStationReservation(tile, false);
-				tile = TILE_ADD(tile, diff);
-			}
-		} else if (tile != m_res_fail_tile || td != m_res_fail_td) {
-			UnreserveRailTrack(tile, TrackdirToTrack(td));
-		}
-		return (tile != m_res_dest || td != m_res_dest_td) && (tile != m_res_fail_tile || td != m_res_fail_td);
-	}
-
-public:
-	/** Set the target to where the reservation should be extended. */
-	inline void SetReservationTarget(Node *node, TileIndex tile, Trackdir td)
-	{
-		m_res_node = node;
-		m_res_dest = tile;
-		m_res_dest_td = td;
-	}
-
-	/** Check the node for a possible reservation target. */
-	inline void FindSafePositionOnNode(Node *node)
-	{
-		assert(node->m_parent != NULL);
-
-		/* We will never pass more than two signals, no need to check for a safe tile. */
-		if (node->m_parent->m_num_signals_passed >= 2) return;
-
-		if (!node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::FindSafePositionProc)) {
-			m_res_node = node;
-		}
-	}
-
-	/** Try to reserve the path till the reservation target. */
-	bool TryReservePath(PBSTileInfo *target)
-	{
-		m_res_fail_tile = INVALID_TILE;
-
-		if (target != NULL) {
-			target->tile = m_res_dest;
-			target->trackdir = m_res_dest_td;
-			target->okay = false;
-		}
-
-		/* Don't bother if the target is reserved. */
-		if (!IsWaitingPositionFree(Train::From(Yapf().GetVehicle()), m_res_dest, m_res_dest_td)) return false;
-
-		for (Node *node = m_res_node; node->m_parent != NULL; node = node->m_parent) {
-			node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::ReserveSingleTrack);
-			if (m_res_fail_tile != INVALID_TILE) {
-				/* Reservation failed, undo. */
-				Node *fail_node = m_res_node;
-				TileIndex stop_tile = m_res_fail_tile;
-				do {
-					/* If this is the node that failed, stop at the failed tile. */
-					m_res_fail_tile = fail_node == node ? stop_tile : INVALID_TILE;
-					fail_node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::UnreserveSingleTrack);
-				} while (fail_node != node && (fail_node = fail_node->m_parent) != NULL);
-
-				return false;
-			}
-		}
-
-		if (target != NULL) target->okay = true;
-
-		if (Yapf().CanUseGlobalCache(*m_res_node))
-			YapfNotifyTrackLayoutChange(INVALID_TILE, INVALID_TRACK);
-
-		return true;
-	}
-};
-
-template <class Types>
-class CYapfFollowAnyDepotRailT
-{
-public:
-	typedef typename Types::Tpf Tpf;                     ///< the pathfinder class (derived from THIS class)
-	typedef typename Types::TrackFollower TrackFollower;
-	typedef typename Types::NodeList::Titem Node;        ///< this will be our node type
-	typedef typename Node::Key Key;                      ///< key to hash tables
-
-protected:
-	/** to access inherited path finder */
-	FORCEINLINE Tpf& Yapf()
-	{
-		return *static_cast<Tpf*>(this);
-	}
-
-public:
-	/** Called by YAPF to move from the given node to the next tile. For each
-	 *  reachable trackdir on the new tile creates new node, initializes it
-	 *  and adds it to the open list by calling Yapf().AddNewNode(n) */
-	inline void PfFollowNode(Node& old_node)
-	{
-		TrackFollower F(Yapf().GetVehicle());
-		if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir())) {
-			Yapf().AddMultipleNodes(&old_node, F);
-		}
-	}
-
-	/** return debug report character to identify the transportation type */
-	FORCEINLINE char TransportTypeChar() const
-	{
-		return 't';
-	}
-
-	static bool stFindNearestDepotTwoWay(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
-	{
-		Tpf pf1;
-		/*
-		 * With caching enabled it simply cannot get a reliable result when you
-		 * have limited the distance a train may travel. This means that the
-		 * cached result does not match uncached result in all cases and that
-		 * causes desyncs. So disable caching when finding for a depot that is
-		 * nearby. This only happens with automatic servicing of vehicles,
-		 * so it will only impact performance when you do not manually set
-		 * depot orders and you do not disable automatic servicing.
-		 */
-		if (max_distance != 0) pf1.DisableCache(true);
-		bool result1 = pf1.FindNearestDepotTwoWay(v, t1, td1, t2, td2, max_distance, reverse_penalty, depot_tile, reversed);
-
-#if DEBUG_YAPF_CACHE
-		Tpf pf2;
-		TileIndex depot_tile2 = INVALID_TILE;
-		bool reversed2 = false;
-		pf2.DisableCache(true);
-		bool result2 = pf2.FindNearestDepotTwoWay(v, t1, td1, t2, td2, max_distance, reverse_penalty, &depot_tile2, &reversed2);
-		if (result1 != result2 || (result1 && (*depot_tile != depot_tile2 || *reversed != reversed2))) {
-			DEBUG(yapf, 0, "CACHE ERROR: FindNearestDepotTwoWay() = [%s, %s]", result1 ? "T" : "F", result2 ? "T" : "F");
-			DumpState(pf1, pf2);
-		}
-#endif
-
-		return result1;
-	}
-
-	FORCEINLINE bool FindNearestDepotTwoWay(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
-	{
-		/* set origin and destination nodes */
-		Yapf().SetOrigin(t1, td1, t2, td2, reverse_penalty, true);
-		Yapf().SetDestination(v);
-		Yapf().SetMaxCost(YAPF_TILE_LENGTH * max_distance);
-
-		/* find the best path */
-		bool bFound = Yapf().FindPath(v);
-		if (!bFound) return false;
-
-		/* some path found
-		 * get found depot tile */
-		Node *n = Yapf().GetBestNode();
-		*depot_tile = n->GetLastTile();
-
-		/* walk through the path back to the origin */
-		Node *pNode = n;
-		while (pNode->m_parent != NULL) {
-			pNode = pNode->m_parent;
-		}
-
-		/* if the origin node is our front vehicle tile/Trackdir then we didn't reverse
-		 * but we can also look at the cost (== 0 -> not reversed, == reverse_penalty -> reversed) */
-		*reversed = (pNode->m_cost != 0);
-
-		return true;
-	}
-};
-
-template <class Types>
-class CYapfFollowAnySafeTileRailT : public CYapfReserveTrack<Types>
-{
-public:
-	typedef typename Types::Tpf Tpf;                     ///< the pathfinder class (derived from THIS class)
-	typedef typename Types::TrackFollower TrackFollower;
-	typedef typename Types::NodeList::Titem Node;        ///< this will be our node type
-	typedef typename Node::Key Key;                      ///< key to hash tables
-
-protected:
-	/** to access inherited path finder */
-	FORCEINLINE Tpf& Yapf()
-	{
-		return *static_cast<Tpf*>(this);
-	}
-
-public:
-	/** Called by YAPF to move from the given node to the next tile. For each
-	 *  reachable trackdir on the new tile creates new node, initializes it
-	 *  and adds it to the open list by calling Yapf().AddNewNode(n) */
-	inline void PfFollowNode(Node& old_node)
-	{
-		TrackFollower F(Yapf().GetVehicle(), Yapf().GetCompatibleRailTypes());
-		if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir()) && F.MaskReservedTracks()) {
-			Yapf().AddMultipleNodes(&old_node, F);
-		}
-	}
-
-	/** Return debug report character to identify the transportation type */
-	FORCEINLINE char TransportTypeChar() const
-	{
-		return 't';
-	}
-
-	static bool stFindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype)
-	{
-		/* Create pathfinder instance */
-		Tpf pf1;
-#if !DEBUG_YAPF_CACHE
-		bool result1 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, false);
-
-#else
-		bool result2 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, true);
-		Tpf pf2;
-		pf2.DisableCache(true);
-		bool result1 = pf2.FindNearestSafeTile(v, t1, td, override_railtype, false);
-		if (result1 != result2) {
-			DEBUG(yapf, 0, "CACHE ERROR: FindSafeTile() = [%s, %s]", result2 ? "T" : "F", result1 ? "T" : "F");
-			DumpState(pf1, pf2);
-		}
-#endif
-
-		return result1;
-	}
-
-	bool FindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype, bool dont_reserve)
-	{
-		/* Set origin and destination. */
-		Yapf().SetOrigin(t1, td);
-		Yapf().SetDestination(v, override_railtype);
-
-		bool bFound = Yapf().FindPath(v);
-		if (!bFound) return false;
-
-		/* Found a destination, set as reservation target. */
-		Node *pNode = Yapf().GetBestNode();
-		this->SetReservationTarget(pNode, pNode->GetLastTile(), pNode->GetLastTrackdir());
-
-		/* Walk through the path back to the origin. */
-		Node *pPrev = NULL;
-		while (pNode->m_parent != NULL) {
-			pPrev = pNode;
-			pNode = pNode->m_parent;
-
-			this->FindSafePositionOnNode(pPrev);
-		}
-
-		return dont_reserve || this->TryReservePath(NULL);
-	}
-};
-
-template <class Types>
-class CYapfFollowRailT : public CYapfReserveTrack<Types>
-{
-public:
-	typedef typename Types::Tpf Tpf;                     ///< the pathfinder class (derived from THIS class)
-	typedef typename Types::TrackFollower TrackFollower;
-	typedef typename Types::NodeList::Titem Node;        ///< this will be our node type
-	typedef typename Node::Key Key;                      ///< key to hash tables
-
-protected:
-	/** to access inherited path finder */
-	FORCEINLINE Tpf& Yapf()
-	{
-		return *static_cast<Tpf*>(this);
-	}
-
-public:
-	/** Called by YAPF to move from the given node to the next tile. For each
-	 *  reachable trackdir on the new tile creates new node, initializes it
-	 *  and adds it to the open list by calling Yapf().AddNewNode(n) */
-	inline void PfFollowNode(Node& old_node)
-	{
-		TrackFollower F(Yapf().GetVehicle());
-		if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir())) {
-			Yapf().AddMultipleNodes(&old_node, F);
-		}
-	}
-
-	/** return debug report character to identify the transportation type */
-	FORCEINLINE char TransportTypeChar() const
-	{
-		return 't';
-	}
-
-	static Trackdir stChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
-	{
-		/* create pathfinder instance */
-		Tpf pf1;
-#if !DEBUG_YAPF_CACHE
-		Trackdir result1 = pf1.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
-
-#else
-		Trackdir result1 = pf1.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, false, NULL);
-		Tpf pf2;
-		pf2.DisableCache(true);
-		Trackdir result2 = pf2.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
-		if (result1 != result2) {
-			DEBUG(yapf, 0, "CACHE ERROR: ChooseRailTrack() = [%d, %d]", result1, result2);
-			DumpState(pf1, pf2);
-		}
-#endif
-
-		return result1;
-	}
-
-	FORCEINLINE Trackdir ChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
-	{
-		if (target != NULL) target->tile = INVALID_TILE;
-
-		/* set origin and destination nodes */
-		PBSTileInfo origin = FollowTrainReservation(Train::From(v));
-		Yapf().SetOrigin(origin.tile, origin.trackdir, INVALID_TILE, INVALID_TRACKDIR, 1, true);
-		Yapf().SetDestination(v);
-
-		/* find the best path */
-		bool path_found = Yapf().FindPath(v);
-		if (path_not_found != NULL) {
-			/* tell controller that the path was only 'guessed'
-			 * treat the path as found if stopped on the first two way signal(s) */
-			*path_not_found = !(path_found || Yapf().m_stopped_on_first_two_way_signal);
-		}
-
-		/* if path not found - return INVALID_TRACKDIR */
-		Trackdir next_trackdir = INVALID_TRACKDIR;
-		Node *pNode = Yapf().GetBestNode();
-		if (pNode != NULL) {
-			/* reserve till end of path */
-			this->SetReservationTarget(pNode, pNode->GetLastTile(), pNode->GetLastTrackdir());
-
-			/* path was found or at least suggested
-			 * walk through the path back to the origin */
-			Node *pPrev = NULL;
-			while (pNode->m_parent != NULL) {
-				pPrev = pNode;
-				pNode = pNode->m_parent;
-
-				this->FindSafePositionOnNode(pPrev);
-			}
-			/* return trackdir from the best origin node (one of start nodes) */
-			Node& best_next_node = *pPrev;
-			next_trackdir = best_next_node.GetTrackdir();
-
-			if (reserve_track && path_found) this->TryReservePath(target);
-		}
-		return next_trackdir;
-	}
-
-	static bool stCheckReverseTrain(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int reverse_penalty)
-	{
-		Tpf pf1;
-		bool result1 = pf1.CheckReverseTrain(v, t1, td1, t2, td2, reverse_penalty);
-
-#if DEBUG_YAPF_CACHE
-		Tpf pf2;
-		pf2.DisableCache(true);
-		bool result2 = pf2.CheckReverseTrain(v, t1, td1, t2, td2, reverse_penalty);
-		if (result1 != result2) {
-			DEBUG(yapf, 0, "CACHE ERROR: CheckReverseTrain() = [%s, %s]", result1 ? "T" : "F", result2 ? "T" : "F");
-			DumpState(pf1, pf2);
-		}
-#endif
-
-		return result1;
-	}
-
-	FORCEINLINE bool CheckReverseTrain(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int reverse_penalty)
-	{
-		/* create pathfinder instance
-		 * set origin and destination nodes */
-		Yapf().SetOrigin(t1, td1, t2, td2, reverse_penalty, false);
-		Yapf().SetDestination(v);
-
-		/* find the best path */
-		bool bFound = Yapf().FindPath(v);
-
-		if (!bFound) return false;
-
-		/* path was found
-		 * walk through the path back to the origin */
-		Node *pNode = Yapf().GetBestNode();
-		while (pNode->m_parent != NULL) {
-			pNode = pNode->m_parent;
-		}
-
-		/* check if it was reversed origin */
-		Node& best_org_node = *pNode;
-		bool reversed = (best_org_node.m_cost != 0);
-		return reversed;
-	}
-};
-
-template <class Tpf_, class Ttrack_follower, class Tnode_list, template <class Types> class TdestinationT, template <class Types> class TfollowT>
-struct CYapfRail_TypesT
-{
-	typedef CYapfRail_TypesT<Tpf_, Ttrack_follower, Tnode_list, TdestinationT, TfollowT>  Types;
-
-	typedef Tpf_                                Tpf;
-	typedef Ttrack_follower                     TrackFollower;
-	typedef Tnode_list                          NodeList;
-	typedef CYapfBaseT<Types>                   PfBase;
-	typedef TfollowT<Types>                     PfFollow;
-	typedef CYapfOriginTileTwoWayT<Types>       PfOrigin;
-	typedef TdestinationT<Types>                PfDestination;
-	typedef CYapfSegmentCostCacheGlobalT<Types> PfCache;
-	typedef CYapfCostRailT<Types>               PfCost;
-};
-
-struct CYapfRail1         : CYapfT<CYapfRail_TypesT<CYapfRail1        , CFollowTrackRail    , CRailNodeListTrackDir, CYapfDestinationTileOrStationRailT, CYapfFollowRailT> > {};
-struct CYapfRail2         : CYapfT<CYapfRail_TypesT<CYapfRail2        , CFollowTrackRailNo90, CRailNodeListTrackDir, CYapfDestinationTileOrStationRailT, CYapfFollowRailT> > {};
-
-struct CYapfAnyDepotRail1 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail1, CFollowTrackRail    , CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT     , CYapfFollowAnyDepotRailT> > {};
-struct CYapfAnyDepotRail2 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail2, CFollowTrackRailNo90, CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT     , CYapfFollowAnyDepotRailT> > {};
-
-struct CYapfAnySafeTileRail1 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail1, CFollowTrackFreeRail    , CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
-struct CYapfAnySafeTileRail2 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail2, CFollowTrackFreeRailNo90, CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
-
-
-Trackdir YapfChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
-{
-	/* default is YAPF type 2 */
-	typedef Trackdir (*PfnChooseRailTrack)(const Vehicle*, TileIndex, DiagDirection, TrackBits, bool*, bool, PBSTileInfo*);
-	PfnChooseRailTrack pfnChooseRailTrack = &CYapfRail1::stChooseRailTrack;
-
-	/* check if non-default YAPF type needed */
-	if (_settings_game.pf.forbid_90_deg) {
-		pfnChooseRailTrack = &CYapfRail2::stChooseRailTrack; // Trackdir, forbid 90-deg
-	}
-
-	Trackdir td_ret = pfnChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
-
-	return td_ret;
-}
-
-bool YapfCheckReverseTrain(const Vehicle *vt)
-{
-	const Train *v = Train::From(vt);
-	const Train *last_veh = v->Last();
-
-	/* get trackdirs of both ends */
-	Trackdir td = v->GetVehicleTrackdir();
-	Trackdir td_rev = ReverseTrackdir(last_veh->GetVehicleTrackdir());
-
-	/* tiles where front and back are */
-	TileIndex tile = v->tile;
-	TileIndex tile_rev = last_veh->tile;
-
-	int reverse_penalty = 0;
-
-	if (v->track == TRACK_BIT_WORMHOLE) {
-		/* front in tunnel / on bridge */
-		DiagDirection dir_into_wormhole = GetTunnelBridgeDirection(tile);
-
-		if (TrackdirToExitdir(td) == dir_into_wormhole) tile = GetOtherTunnelBridgeEnd(tile);
-		/* Now 'tile' is the tunnel entry/bridge ramp the train will reach when driving forward */
-
-		/* Current position of the train in the wormhole */
-		TileIndex cur_tile = TileVirtXY(v->x_pos, v->y_pos);
-
-		/* Add distance to drive in the wormhole as penalty for the forward path, i.e. bonus for the reverse path
-		 * Note: Negative penalties are ok for the start tile. */
-		reverse_penalty -= DistanceManhattan(cur_tile, tile) * YAPF_TILE_LENGTH;
-	}
-
-	if (last_veh->track == TRACK_BIT_WORMHOLE) {
-		/* back in tunnel / on bridge */
-		DiagDirection dir_into_wormhole = GetTunnelBridgeDirection(tile_rev);
-
-		if (TrackdirToExitdir(td_rev) == dir_into_wormhole) tile_rev = GetOtherTunnelBridgeEnd(tile_rev);
-		/* Now 'tile_rev' is the tunnel entry/bridge ramp the train will reach when reversing */
-
-		/* Current position of the last wagon in the wormhole */
-		TileIndex cur_tile = TileVirtXY(last_veh->x_pos, last_veh->y_pos);
-
-		/* Add distance to drive in the wormhole as penalty for the revere path. */
-		reverse_penalty += DistanceManhattan(cur_tile, tile_rev) * YAPF_TILE_LENGTH;
-	}
-
-	typedef bool (*PfnCheckReverseTrain)(const Vehicle*, TileIndex, Trackdir, TileIndex, Trackdir, int);
-	PfnCheckReverseTrain pfnCheckReverseTrain = CYapfRail1::stCheckReverseTrain;
-
-	/* check if non-default YAPF type needed */
-	if (_settings_game.pf.forbid_90_deg) {
-		pfnCheckReverseTrain = &CYapfRail2::stCheckReverseTrain; // Trackdir, forbid 90-deg
-	}
-
-	/* slightly hackish: If the pathfinders finds a path, the cost of the first node is tested to distinguish between forward- and reverse-path. */
-	if (reverse_penalty == 0) reverse_penalty = 1;
-
-	bool reverse = pfnCheckReverseTrain(v, tile, td, tile_rev, td_rev, reverse_penalty);
-
-	return reverse;
-}
-
-bool YapfFindNearestRailDepotTwoWay(const Vehicle *v, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
-{
-	*depot_tile = INVALID_TILE;
-	*reversed = false;
-
-	const Vehicle *last_veh = v->Last();
-
-	PBSTileInfo origin = FollowTrainReservation(Train::From(v));
-	TileIndex last_tile = last_veh->tile;
-	Trackdir td_rev = ReverseTrackdir(last_veh->GetVehicleTrackdir());
-
-	typedef bool (*PfnFindNearestDepotTwoWay)(const Vehicle*, TileIndex, Trackdir, TileIndex, Trackdir, int, int, TileIndex*, bool*);
-	PfnFindNearestDepotTwoWay pfnFindNearestDepotTwoWay = &CYapfAnyDepotRail1::stFindNearestDepotTwoWay;
-
-	/* check if non-default YAPF type needed */
-	if (_settings_game.pf.forbid_90_deg) {
-		pfnFindNearestDepotTwoWay = &CYapfAnyDepotRail2::stFindNearestDepotTwoWay; // Trackdir, forbid 90-deg
-	}
-
-	bool ret = pfnFindNearestDepotTwoWay(v, origin.tile, origin.trackdir, last_tile, td_rev, max_distance, reverse_penalty, depot_tile, reversed);
-	return ret;
-}
-
-bool YapfRailFindNearestSafeTile(const Vehicle *v, TileIndex tile, Trackdir td, bool override_railtype)
-{
-	typedef bool (*PfnFindNearestSafeTile)(const Vehicle*, TileIndex, Trackdir, bool);
-	PfnFindNearestSafeTile pfnFindNearestSafeTile = CYapfAnySafeTileRail1::stFindNearestSafeTile;
-
-	/* check if non-default YAPF type needed */
-	if (_settings_game.pf.forbid_90_deg) {
-		pfnFindNearestSafeTile = &CYapfAnySafeTileRail2::stFindNearestSafeTile;
-	}
-
-	return pfnFindNearestSafeTile(v, tile, td, override_railtype);
-}
-
-/** if any track changes, this counter is incremented - that will invalidate segment cost cache */
-int CSegmentCostCacheBase::s_rail_change_counter = 0;
-
-void YapfNotifyTrackLayoutChange(TileIndex tile, Track track)
-{
-	CSegmentCostCacheBase::NotifyTrackLayoutChange(tile, track);
-}