# HG changeset patch
# User celestar
# Date 1167667641 0
# Node ID 6ce400c0a2f4e9d12af51f131441623a991c997e
# Parent  3b40a41f90d23d636814ce5587b311f317dab72a
(svn r7719) [cbh] - Codechange: KUDr and I have decided that our developemnt efforts went in the wrong direction, so revert all changes from 7686 onwards

diff -r 3b40a41f90d2 -r 6ce400c0a2f4 bridge_cmd.c
--- a/bridge_cmd.c	Mon Jan 01 10:26:12 2007 +0000
+++ b/bridge_cmd.c	Mon Jan 01 16:07:21 2007 +0000
@@ -1004,8 +1004,20 @@
 	}
 
 	dir = GetBridgeRampDirection(tile);
-	if (v->direction == DiagDirToDir(ReverseDiagDir(dir))) {
-		/* leaving the bridge */
+	if (DirToDiagDir(v->direction) == dir ||
+			(IsTileType(tile, MP_RAILWAY_BRIDGE) && DirToDiagDir(v->direction) != ReverseDiagDir(dir))) {
+		switch (dir) {
+			default: NOT_REACHED();
+			case DIAGDIR_NE: if ((x & 0xF) != 0)             return 0; break;
+			case DIAGDIR_SE: if ((y & 0xF) != TILE_SIZE - 1) return 0; break;
+			case DIAGDIR_SW: if ((x & 0xF) != TILE_SIZE - 1) return 0; break;
+			case DIAGDIR_NW: if ((y & 0xF) != 0)             return 0; break;
+		}
+		v->u.rail.track = 0x40;
+		CLRBIT(v->u.rail.flags, VRF_GOINGUP);
+		CLRBIT(v->u.rail.flags, VRF_GOINGDOWN);
+		return 4;
+	} else if (DirToDiagDir(v->direction) == ReverseDiagDir(dir)) {
 		v->tile = tile;
 		if (v->u.rail.track == 0x40) {
 			v->u.rail.track = (DiagDirToAxis(dir) == AXIS_X ? 1 : 2);
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 openttd_vs80.vcproj
--- a/openttd_vs80.vcproj	Mon Jan 01 10:26:12 2007 +0000
+++ b/openttd_vs80.vcproj	Mon Jan 01 16:07:21 2007 +0000
@@ -1784,14 +1784,6 @@
 				>
 			</File>
 			<File
-				RelativePath=".\yapf\str.hpp"
-				>
-			</File>
-			<File
-				RelativePath=".\yapf\strapi.hpp"
-				>
-			</File>
-			<File
 				RelativePath=".\yapf\track_dir.hpp"
 				>
 			</File>
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 train_cmd.c
--- a/train_cmd.c	Mon Jan 01 10:26:12 2007 +0000
+++ b/train_cmd.c	Mon Jan 01 16:07:21 2007 +0000
@@ -3014,36 +3014,6 @@
 	return NULL;
 }
 
-/** Puts a train (logically) onto a bridge body.
-  * Sets the correct coordinates to traverse the bridge
-  * and aligns the vehicle with the bridge. The function
-  * assumes the train is on a bridge head about to enter
-  * the bridge.
-  */
-static void PutTrainOntoBridge(Vehicle *v, int x, int y)
-{
-	DiagDirection dir;
-	uint8 dxy;
-	assert(IsBridgeTile(v->tile));
-	dir = GetBridgeRampDirection(v->tile);
-	v->u.rail.track = 0x40;
-	v->direction = DiagDirToDir(dir);
-	CLRBIT(v->u.rail.flags, VRF_GOINGUP);
-	CLRBIT(v->u.rail.flags, VRF_GOINGDOWN);
-
-	switch (dir) {
-		default: NOT_REACHED();
-		case DIAGDIR_NE: dxy = 0xF8; break;
-		case DIAGDIR_SE: dxy = 0x80; break;
-		case DIAGDIR_SW: dxy = 0x08; break;
-		case DIAGDIR_NW: dxy = 0x8F; break;
-	}
-	SB(x, 0, 4, GB(dxy, 4, 4));
-	SB(y, 0, 4, GB(dxy, 0, 4));
-	v->x_pos = x;
-	v->y_pos = y;
-}
-
 static void TrainController(Vehicle *v, bool update_image)
 {
 	Vehicle *prev;
@@ -3072,10 +3042,7 @@
 				} else {
 					/* is not inside depot */
 
-					if (!TrainCheckIfLineEnds(v)) {
-						/* reversing */
-						return;
-					}
+					if (!TrainCheckIfLineEnds(v)) return;
 
 					r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
 					if (r & 0x8) {
@@ -3093,26 +3060,15 @@
 						InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
 					}
 				}
-			} else new_tile:{
+			} else {
 				/* A new tile is about to be entered. */
 
 				byte bits;
-
 				/* Determine what direction we're entering the new tile from */
 				dir = GetNewVehicleDirectionByTile(gp.new_tile, gp.old_tile);
 				enterdir = DirToDiagDir(dir);
 				assert(enterdir==0 || enterdir==1 || enterdir==2 || enterdir==3);
 
-				/* We should not let the train that is leaving custom bridge head (entering bridge)
-				 * to enter the tile that is under bridge. Enter the bridge wormhole instead. */
-				if (IsBridgeTile(gp.old_tile) && GetBridgeRampDirection(gp.old_tile) == enterdir) {
-					/* train entering the bridge body */
-					PutTrainOntoBridge(v, gp.x, gp.y);
-					UpdateTrainDeltaXY(v, v->direction);
-					if (update_image) v->cur_image = GetTrainImage(v, v->direction);
-					continue;
-				}
-
 				/* Get the status of the tracks in the new tile and mask
 				 * away the bits that aren't reachable. */
 				ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL) & _reachable_tracks[enterdir];
@@ -3208,17 +3164,7 @@
 
 			SetSpeedLimitOnBridge(v);
 
-			if ((IsTunnelTile(gp.new_tile) || IsBridgeTile(gp.new_tile)) && ((VehicleEnterTile(v, gp.new_tile, gp.x, gp.y) & 0x4) != 0)) {
-				if (IsBridgeTile(gp.new_tile)) {
-					/* when on a bridge, v->tile points to one of the bridge heads. GetNewVehicleDirection will
-					 * fail, because it expects the new and old tile (gp.{new|old}tile) to be adjacent to each
-					 * other. So we set the old_tile here manually by using the current vehicle coordinates */
-					gp.old_tile = TileVirtXY(v->x_pos, v->y_pos);
-					goto new_tile; /* We need the same code when entering from a bridge than from any other tile */
-				}
-
-			} else {
-				/* vehicle stays in the bridge/tunnel wormhole */
+			if (!(IsTunnelTile(gp.new_tile) || IsBridgeTile(gp.new_tile)) || !(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y) & 0x4)) {
 				v->x_pos = gp.x;
 				v->y_pos = gp.y;
 				VehiclePositionChanged(v);
@@ -3459,11 +3405,11 @@
 
 	tile = v->tile;
 
-	if (IsTunnelTile(tile)) {
-		DiagDirection dir = GetTunnelDirection(tile);
-		if (v->direction == DiagDirToDir(dir)) return true;
-	} else if (IsBridgeTile(tile)) {
-		if (TrackdirToExitdir(GetVehicleTrackdir(v)) == GetBridgeRampDirection(tile)) return true;
+	if (IsTileType(tile, MP_TUNNEL) || IsTileType(tile, MP_RAILWAY_BRIDGE)) {
+		DiagDirection dir;
+
+		dir = IsTunnelTile(tile) ? GetTunnelDirection(tile) : GetBridgeRampDirection(tile);
+		if (DiagDirToDir(dir) == v->direction) return true;
 	}
 
 	// depot?
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/blob.hpp
--- a/yapf/blob.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/blob.hpp	Mon Jan 01 16:07:21 2007 +0000
@@ -4,82 +4,75 @@
 #define  BLOB_HPP
 
 /** Type-safe version of memcpy().
-* @param d destination buffer
-* @param s source buffer
-* @param num_items number of items to be copied (!not number of bytes!) */
+ * @param d destination buffer
+ * @param s source buffer
+ * @param num_items number of items to be copied (!not number of bytes!) */
 template <class Titem_>
-FORCEINLINE void MemCpyT(Titem_* d, const Titem_* s, size_t num_items = 1)
+FORCEINLINE void MemCpyT(Titem_* d, const Titem_* s, int num_items = 1)
 {
 	memcpy(d, s, num_items * sizeof(Titem_));
 }
 
 
 /** Base class for simple binary blobs.
-*  Item is byte.
-*  The word 'simple' means:
-*    - no configurable allocator type (always made from heap)
-*    - no smart deallocation - deallocation must be called from the same
-*        module (DLL) where the blob was allocated
-*    - no configurable allocation policy (how big blocks should be allocated)
-*    - no extra ownership policy (i.e. 'copy on write') when blob is copied
-*    - no thread synchronization at all
-*
-*  Internal member layout:
-*  1. The only class member is pointer to the first item (see union ptr_u).
-*  2. Allocated block contains the blob header (see CHdr) followed by the raw byte data.
-*     Always, when it allocates memory the allocated size is:
-*                                                      sizeof(CHdr) + <data capacity>
-*  3. Two 'virtual' members (m_size and m_max_size) are stored in the CHdr at beginning
-*     of the alloated block.
-*  4. The pointter (in ptr_u) posize_ts behind the header (to the first data byte).
-*     When memory block is allocated, the sizeof(CHdr) it added to it.
-*  5. Benefits of this layout:
-*     - items are accessed in the simplest possible way - just dereferencing the pointer,
-*       which is good for performance (assuming that data are accessed most often).
-*     - sizeof(blob) is the same as the size of any other pointer
-*  6. Drawbacks of this layout:
-*     - the fact, that pointer to the alocated block is adjusted by sizeof(CHdr) before
-*       it is stored can lead to several confusions:
-*         - it is not common pattern so the implementation code is bit harder to read
-*         - valgrind can generate warning that allocated block is lost (not accessible)
-* */
+ *  Item is byte.
+ *  The word 'simple' means:
+ *    - no configurable allocator type (always made from heap)
+ *    - no smart deallocation - deallocation must be called from the same
+ *        module (DLL) where the blob was allocated
+ *    - no configurable allocation policy (how big blocks should be allocated)
+ *    - no extra ownership policy (i.e. 'copy on write') when blob is copied
+ *    - no thread synchronization at all
+ *
+ *  Internal member layout:
+ *  1. The only class member is pointer to the first item (see union ptr_u).
+ *  2. Allocated block contains the blob header (see CHdr) followed by the raw byte data.
+ *     Always, when it allocates memory the allocated size is:
+ *                                                      sizeof(CHdr) + <data capacity>
+ *  3. Two 'virtual' members (m_size and m_max_size) are stored in the CHdr at beginning
+ *     of the alloated block.
+ *  4. The pointer (in ptr_u) points behind the header (to the first data byte).
+ *     When memory block is allocated, the sizeof(CHdr) it added to it.
+ *  5. Benefits of this layout:
+ *     - items are accessed in the simplest possible way - just dereferencing the pointer,
+ *       which is good for performance (assuming that data are accessed most often).
+ *     - sizeof(blob) is the same as the size of any other pointer
+ *  6. Drawbacks of this layout:
+ *     - the fact, that pointer to the alocated block is adjusted by sizeof(CHdr) before
+ *       it is stored can lead to several confusions:
+ *         - it is not common pattern so the implementation code is bit harder to read
+ *         - valgrind can generate warning that allocated block is lost (not accessible)
+ * */
 class CBlobBaseSimple {
-public:
-	typedef ::ptrdiff_t size_t;
 protected:
 	/** header of the allocated memory block */
 	struct CHdr {
-		size_t    m_size;      ///< actual blob size in bytes
-		size_t    m_max_size;  ///< maximum (allocated) size in bytes
+		int    m_size;      ///< actual blob size in bytes
+		int    m_max_size;  ///< maximum (allocated) size in bytes
 	};
 
 	/** type used as class member */
 	union {
-		int8    *m_pData;    ///< ptr to the first byte of data
-		wchar_t *m_pwData;   ///< ptr to the first byte of data
-		CHdr    *m_pHdr_1;   ///< ptr just after the CHdr holding m_size and m_max_size
+		int8   *m_pData;    ///< pointer to the first byte of data
+		CHdr   *m_pHdr_1;   ///< pointer just after the CHdr holding m_size and m_max_size
 	} ptr_u;
 
 public:
-	static const size_t Ttail_reserve = 4; ///< four extra bytes will be always allocated and zeroed at the end
+	static const int Ttail_reserve = 4; ///< four extra bytes will be always allocated and zeroed at the end
 
 	/** default constructor - initializes empty blob */
 	FORCEINLINE CBlobBaseSimple() { InitEmpty(); }
-	/** constructor - create blob with data */
-	FORCEINLINE CBlobBaseSimple(const int8 *p, size_t num_bytes) { InitEmpty(); AppendRaw(p, num_bytes);}
 	/** copy constructor */
 	FORCEINLINE CBlobBaseSimple(const CBlobBaseSimple& src)
 	{
 		InitEmpty();
 		AppendRaw(src);
 	}
-	/** move constructor - take ownership of blob data */
-	FORCEINLINE CBlobBaseSimple(CHdr * const & pHdr_1) {assert(pHdr_1 != NULL); ptr_u.m_pHdr_1 = pHdr_1; *(CHdr**)&pHdr_1 = NULL;}
 	/** destructor */
 	FORCEINLINE ~CBlobBaseSimple() { Free(); }
 protected:
 	/** initialize the empty blob by setting the ptr_u.m_pHdr_1 pointer to the static CHdr with
-	*  both m_size and m_max_size containing zero */
+	 *  both m_size and m_max_size containing zero */
 	FORCEINLINE void InitEmpty() { static CHdr hdrEmpty[] = {{0, 0}, {0, 0}}; ptr_u.m_pHdr_1 = &hdrEmpty[1]; }
 	/** initialize blob by attaching it to the given header followed by data */
 	FORCEINLINE void Init(CHdr* hdr) { ptr_u.m_pHdr_1 = &hdr[1]; }
@@ -88,22 +81,22 @@
 	/** blob header accessor - use it rather than using the pointer arithmetics directly - const version */
 	FORCEINLINE const CHdr& Hdr() const { return ptr_u.m_pHdr_1[-1]; }
 	/** return reference to the actual blob size - used when the size needs to be modified */
-	FORCEINLINE size_t& RawSizeRef() { return Hdr().m_size; };
+	FORCEINLINE int& RawSizeRef() { return Hdr().m_size; };
 
 public:
 	/** return true if blob doesn't contain valid data */
 	FORCEINLINE bool IsEmpty() const { return RawSize() == 0; }
 	/** return the number of valid data bytes in the blob */
-	FORCEINLINE size_t RawSize() const { return Hdr().m_size; };
+	FORCEINLINE int RawSize() const { return Hdr().m_size; };
 	/** return the current blob capacity in bytes */
-	FORCEINLINE size_t MaxRawSize() const { return Hdr().m_max_size; };
+	FORCEINLINE int MaxRawSize() const { return Hdr().m_max_size; };
 	/** return pointer to the first byte of data - non-const version */
 	FORCEINLINE int8* RawData() { return ptr_u.m_pData; }
 	/** return pointer to the first byte of data - const version */
 	FORCEINLINE const int8* RawData() const { return ptr_u.m_pData; }
 #if 0 // reenable when needed
 	/** return the 32 bit CRC of valid data in the blob */
-	FORCEINLINE usize_t32 Crc32() const {return CCrc32::Calc(RawData(), RawSize());}
+	FORCEINLINE uint32 Crc32() const {return CCrc32::Calc(RawData(), RawSize());}
 #endif //0
 	/** invalidate blob's data - doesn't free buffer */
 	FORCEINLINE void Clear() { RawSizeRef() = 0; }
@@ -117,7 +110,7 @@
 	FORCEINLINE void Swap(CBlobBaseSimple& src) { int8 *tmp = ptr_u.m_pData; ptr_u.m_pData = src.ptr_u.m_pData; src.ptr_u.m_pData = tmp; }
 
 	/** append new bytes at the end of existing data bytes - reallocates if necessary */
-	FORCEINLINE void AppendRaw(const int8 *p, size_t num_bytes)
+	FORCEINLINE void AppendRaw(int8 *p, int num_bytes)
 	{
 		assert(p != NULL);
 		if (num_bytes > 0) {
@@ -135,18 +128,19 @@
 	}
 
 	/** Reallocate if there is no free space for num_bytes bytes.
-	*  @return pointer to the new data to be added */
-	FORCEINLINE int8* MakeRawFreeSpace(size_t num_bytes)
+	 *  @return pointer to the new data to be added */
+	FORCEINLINE int8* MakeRawFreeSpace(int num_bytes)
 	{
 		assert(num_bytes >= 0);
-		size_t new_size = RawSize() + num_bytes;
+		int new_size = RawSize() + num_bytes;
 		if (new_size > MaxRawSize()) SmartAlloc(new_size);
+		FixTail();
 		return ptr_u.m_pData + RawSize();
 	}
 
 	/** Increase RawSize() by num_bytes.
-	*  @return pointer to the new data added */
-	FORCEINLINE int8* GrowRawSize(size_t num_bytes)
+	 *  @return pointer to the new data added */
+	FORCEINLINE int8* GrowRawSize(int num_bytes)
 	{
 		int8* pNewData = MakeRawFreeSpace(num_bytes);
 		RawSizeRef() += num_bytes;
@@ -154,7 +148,7 @@
 	}
 
 	/** Decrease RawSize() by num_bytes. */
-	FORCEINLINE void ReduceRawSize(size_t num_bytes)
+	FORCEINLINE void ReduceRawSize(int num_bytes)
 	{
 		if (MaxRawSize() > 0 && num_bytes > 0) {
 			assert(num_bytes <= RawSize());
@@ -163,14 +157,14 @@
 		}
 	}
 	/** reallocate blob data if needed */
-	void SmartAlloc(size_t new_size)
+	void SmartAlloc(int new_size)
 	{
-		size_t old_max_size = MaxRawSize();
+		int old_max_size = MaxRawSize();
 		if (old_max_size >= new_size) return;
 		// calculate minimum block size we need to allocate
-		size_t min_alloc_size = sizeof(CHdr) + new_size + Ttail_reserve;
+		int min_alloc_size = sizeof(CHdr) + new_size + Ttail_reserve;
 		// ask allocation policy for some reasonable block size
-		size_t alloc_size = AllocPolicy(min_alloc_size);
+		int alloc_size = AllocPolicy(min_alloc_size);
 		// allocate new block
 		CHdr* pNewHdr = RawAlloc(alloc_size);
 		// setup header
@@ -186,7 +180,7 @@
 			RawFree(pOldHdr);
 	}
 	/** simple allocation policy - can be optimized later */
-	FORCEINLINE static size_t AllocPolicy(size_t min_alloc)
+	FORCEINLINE static int AllocPolicy(int min_alloc)
 	{
 		if (min_alloc < (1 << 9)) {
 			if (min_alloc < (1 << 5)) return (1 << 5);
@@ -205,74 +199,58 @@
 	}
 
 	/** all allocation should happen here */
-	static FORCEINLINE CHdr* RawAlloc(size_t num_bytes) { return (CHdr*)malloc(num_bytes); }
+	static FORCEINLINE CHdr* RawAlloc(int num_bytes) { return (CHdr*)malloc(num_bytes); }
 	/** all deallocations should happen here */
 	static FORCEINLINE void RawFree(CHdr* p) { free(p); }
 	/** fixing the four bytes at the end of blob data - useful when blob is used to hold string */
-	FORCEINLINE void FixTail() const
+	FORCEINLINE void FixTail()
 	{
 		if (MaxRawSize() > 0) {
 			int8 *p = &ptr_u.m_pData[RawSize()];
-			for (size_t i = 0; i < Ttail_reserve; i++) p[i] = 0;
+			for (int i = 0; i < Ttail_reserve; i++) p[i] = 0;
 		}
 	}
 };
 
 /** Blob - simple dynamic Titem_ array. Titem_ (template argument) is a placeholder for any type.
-*  Titem_ can be any integral type, pointer, or structure. Using Blob instead of just plain C array
-*  simplifies the resource management in several ways:
-*  1. When adding new item(s) it automatically grows capacity if needed.
-*  2. When variable of type Blob comes out of scope it automatically frees the data buffer.
-*  3. Takes care about the actual data size (number of used items).
-*  4. Dynamically constructs only used items (as opposite of static array which constructs all items) */
+ *  Titem_ can be any integral type, pointer, or structure. Using Blob instead of just plain C array
+ *  simplifies the resource management in several ways:
+ *  1. When adding new item(s) it automatically grows capacity if needed.
+ *  2. When variable of type Blob comes out of scope it automatically frees the data buffer.
+ *  3. Takes care about the actual data size (number of used items).
+ *  4. Dynamically constructs only used items (as opposite of static array which constructs all items) */
 template <class Titem_, class Tbase_ = CBlobBaseSimple>
-class CBlobT : public Tbase_ {
+class CBlobT : public CBlobBaseSimple {
 	// make template arguments public:
 public:
 	typedef Titem_ Titem;
 	typedef Tbase_ Tbase;
-	typedef typename Tbase::size_t size_t;
-
-	static const size_t Titem_size = sizeof(Titem);
 
-	struct OnTransfer {
-		typename Tbase_::CHdr *m_pHdr_1;
-		OnTransfer(const OnTransfer& src) : m_pHdr_1(src.m_pHdr_1) {assert(src.m_pHdr_1 != NULL); *(typename Tbase_::CHdr**)&src.m_pHdr_1 = NULL;}
-		OnTransfer(CBlobT& src) : m_pHdr_1(src.ptr_u.m_pHdr_1) {src.InitEmpty();}
-		~OnTransfer() {assert(m_pHdr_1 == NULL);}
-	};
+	static const int Titem_size = sizeof(Titem);
 
 	/** Default constructor - makes new Blob ready to accept any data */
 	FORCEINLINE CBlobT() : Tbase() {}
-	/** Constructor - makes new Blob with data */
-	FORCEINLINE CBlobT(const Titem_ *p, size_t num_items) : Tbase((int8*)p, num_items * Titem_size) {}
 	/** Copy constructor - make new blob to become copy of the original (source) blob */
-	FORCEINLINE CBlobT(const Tbase& src) : Tbase(src) {assert((Tbase::RawSize() % Titem_size) == 0);}
-	/** Take ownership constructor */
-	FORCEINLINE CBlobT(const OnTransfer& ot) : Tbase(ot.m_pHdr_1) {}
+	FORCEINLINE CBlobT(const Tbase& src) : Tbase(src) {assert((RawSize() % Titem_size) == 0);}
 	/** Destructor - ensures that allocated memory (if any) is freed */
 	FORCEINLINE ~CBlobT() { Free(); }
 	/** Check the validity of item index (only in debug mode) */
-	FORCEINLINE void CheckIdx(size_t idx) { assert(idx >= 0); assert(idx < Size()); }
+	FORCEINLINE void CheckIdx(int idx) { assert(idx >= 0); assert(idx < Size()); }
 	/** Return pointer to the first data item - non-const version */
-	FORCEINLINE Titem* Data() { return (Titem*)Tbase::RawData(); }
+	FORCEINLINE Titem* Data() { return (Titem*)RawData(); }
 	/** Return pointer to the first data item - const version */
-	FORCEINLINE const Titem* Data() const { return (const Titem*)Tbase::RawData(); }
+	FORCEINLINE const Titem* Data() const { return (const Titem*)RawData(); }
 	/** Return pointer to the idx-th data item - non-const version */
-	FORCEINLINE Titem* Data(size_t idx) { CheckIdx(idx); return (Data() + idx); }
+	FORCEINLINE Titem* Data(int idx) { CheckIdx(idx); return (Data() + idx); }
 	/** Return pointer to the idx-th data item - const version */
-	FORCEINLINE const Titem* Data(size_t idx) const { CheckIdx(idx); return (Data() + idx); }
+	FORCEINLINE const Titem* Data(int idx) const { CheckIdx(idx); return (Data() + idx); }
 	/** Return number of items in the Blob */
-	FORCEINLINE size_t Size() const { return (Tbase::RawSize() / Titem_size); }
-	/** Return total number of items that can fit in the Blob without buffer reallocation */
-	FORCEINLINE size_t MaxSize() const { return (Tbase::MaxRawSize() / Titem_size); }
-	/** Return number of additional items that can fit in the Blob without buffer reallocation */
-	FORCEINLINE size_t GetReserve() const { return ((Tbase::MaxRawSize() - Tbase::RawSize()) / Titem_size); }
+	FORCEINLINE int Size() const { return (RawSize() / Titem_size); }
 	/** Free the memory occupied by Blob destroying all items */
 	FORCEINLINE void Free()
 	{
-		assert((Tbase::RawSize() % Titem_size) == 0);
-		size_t old_size = Size();
+		assert((RawSize() % Titem_size) == 0);
+		int old_size = Size();
 		if (old_size > 0) {
 			// destroy removed items;
 			Titem* pI_last_to_destroy = Data(0);
@@ -281,25 +259,25 @@
 		Tbase::Free();
 	}
 	/** Grow number of data items in Blob by given number - doesn't construct items */
-	FORCEINLINE Titem* GrowSizeNC(size_t num_items) { return (Titem*)Tbase::GrowRawSize(num_items * Titem_size); }
+	FORCEINLINE Titem* GrowSizeNC(int num_items) { return (Titem*)GrowRawSize(num_items * Titem_size); }
 	/** Grow number of data items in Blob by given number - constructs new items (using Titem_'s default constructor) */
-	FORCEINLINE Titem* GrowSizeC(size_t num_items)
+	FORCEINLINE Titem* GrowSizeC(int num_items)
 	{
 		Titem* pI = GrowSizeNC(num_items);
-		for (size_t i = num_items; i > 0; i--, pI++) new (pI) Titem();
+		for (int i = num_items; i > 0; i--, pI++) new (pI) Titem();
 	}
 	/** Destroy given number of items and reduce the Blob's data size */
-	FORCEINLINE void ReduceSize(size_t num_items)
+	FORCEINLINE void ReduceSize(int num_items)
 	{
-		assert((Tbase::RawSize() % Titem_size) == 0);
-		size_t old_size = Size();
+		assert((RawSize() % Titem_size) == 0);
+		int old_size = Size();
 		assert(num_items <= old_size);
-		size_t new_size = (num_items <= old_size) ? (old_size - num_items) : 0;
+		int new_size = (num_items <= old_size) ? (old_size - num_items) : 0;
 		// destroy removed items;
 		Titem* pI_last_to_destroy = Data(new_size);
 		for (Titem* pI = Data(old_size - 1); pI >= pI_last_to_destroy; pI--) pI->~Titem();
 		// remove them
-		Tbase::ReduceRawSize(num_items * Titem_size);
+		ReduceRawSize(num_items * Titem_size);
 	}
 	/** Append one data item at the end (calls Titem_'s default constructor) */
 	FORCEINLINE Titem* AppendNew()
@@ -316,7 +294,7 @@
 		return pNewItem;
 	}
 	/** Add given items (ptr + number of items) at the end of blob */
-	FORCEINLINE Titem* Append(const Titem* pSrc, size_t num_items)
+	FORCEINLINE Titem* Append(const Titem* pSrc, int num_items)
 	{
 		Titem* pDst = GrowSizeNC(num_items);
 		Titem* pDstOrg = pDst;
@@ -325,7 +303,7 @@
 		return pDstOrg;
 	}
 	/** Remove item with the given index by replacing it by the last item and reducing the size by one */
-	FORCEINLINE void RemoveBySwap(size_t idx)
+	FORCEINLINE void RemoveBySwap(int idx)
 	{
 		CheckIdx(idx);
 		// destroy removed item
@@ -345,14 +323,20 @@
 		// destroy the last item
 		pLast->~Titem_();
 		// and reduce the raw blob size
-		Tbase::ReduceRawSize(Titem_size);
+		ReduceRawSize(Titem_size);
 	}
 	/** Ensures that given number of items can be added to the end of Blob. Returns pointer to the
-	*  first free (unused) item */
-	FORCEINLINE Titem* MakeFreeSpace(size_t num_items) { return (Titem*)Tbase::MakeRawFreeSpace(num_items * Titem_size); }
-
-	FORCEINLINE OnTransfer Transfer() {return OnTransfer(*this);};
+	 *  first free (unused) item */
+	FORCEINLINE Titem* MakeFreeSpace(int num_items) { return (Titem*)MakeRawFreeSpace(num_items * Titem_size); }
 };
 
+// simple string implementation
+struct CStrA : public CBlobT<char>
+{
+	typedef CBlobT<char> base;
+	CStrA(const char* str = NULL) {Append(str);}
+	FORCEINLINE CStrA(const CBlobBaseSimple& src) : base(src) {}
+	void Append(const char* str) {if (str != NULL && str[0] != '\0') base::Append(str, (int)strlen(str));}
+};
 
 #endif /* BLOB_HPP */
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/follow_track.hpp
--- a/yapf/follow_track.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/follow_track.hpp	Mon Jan 01 16:07:21 2007 +0000
@@ -29,7 +29,6 @@
 		m_exitdir = INVALID_DIAGDIR;
 		m_is_station = m_is_bridge = m_is_tunnel = false;
 		m_tiles_skipped = 0;
-		m_intermediate_trackdir = INVALID_TRACKDIR;
 	}
 
 	FORCEINLINE static TransportType TT() {return Ttr_type_;}
@@ -51,7 +50,7 @@
 		FollowTileExit();
 		if (!QueryNewTileTrackStatus()) return TryReverse();
 		m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir);
-		if (!Allow90degTurns() && m_tiles_skipped == 0)
+		if (!Allow90degTurns())
 			m_new_td_bits &= (TrackdirBits)~(int)TrackdirCrossesTrackdirs(m_old_td);
 		if (m_new_td_bits == TRACKDIR_BIT_NONE) return false;
 		if (!CanEnterNewTile()) return false;
@@ -88,7 +87,6 @@
 				uint32 bridge_length = GetBridgeLength(m_old_tile, m_new_tile);
 				m_tiles_skipped = bridge_length;
 				m_is_bridge = true;
-				if (m_tiles_skipped > 0) m_intermediate_trackdir = DiagdirToDiagTrackdir(bridge_enterdir);
 				return;
 			}
 		}
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/str.hpp
--- a/yapf/str.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,70 +0,0 @@
-/* $Id$ */
-
-#ifndef  STR_HPP
-#define  STR_HPP
-
-#include <errno.h>
-#include <stdarg.h>
-
-#include "blob.hpp"
-#include "strapi.hpp"
-
-
-// simple string implementation
-template <typename Tchar, bool TcaseInsensitive>
-struct CStrT : public CBlobT<Tchar>
-{
-	typedef CBlobT<Tchar> base;
-	typedef CStrApiT<Tchar, TcaseInsensitive> Api;
-	typedef typename base::size_t size_t;
-	typedef typename base::OnTransfer OnTransfer;
-
-
-	FORCEINLINE CStrT(const Tchar* str = NULL) {AppendStr(str);}
-	FORCEINLINE CStrT(const Tchar* str, size_t num_chars) : base(str, num_chars) {base::FixTail();}
-	FORCEINLINE CStrT(const Tchar* str, const Tchar* end) : base(str, end - str) {base::FixTail();}
-	FORCEINLINE CStrT(const CBlobBaseSimple& src) : base(src) {base::FixTail();}
-	/** Take ownership constructor */
-	FORCEINLINE CStrT(const OnTransfer& ot) : base(ot) {}
-	FORCEINLINE Tchar* GrowSizeNC(size_t count) {Tchar* ret = base::GrowSizeNC(count); base::FixTail(); return ret;}
-	FORCEINLINE void AppendStr(const Tchar* str) {if (str != NULL && str[0] != '\0') base::Append(str, (size_t)Api::StrLen(str)); base::FixTail();}
-	FORCEINLINE CStrT& operator = (const Tchar* src) {base::Clear(); Append(src); return *this;}
-	FORCEINLINE bool operator < (const CStrT &other) const {return (Api::StrCmp(base::Data(), other.Data()) < 0);}
-
-	int FormatL(const Tchar *fmt, va_list args)
-	{
-		size_t addSize = Api::StrLen(fmt);
-		if (addSize < 16) addSize = 16;
-		addSize += addSize > 1;
-		int ret;
-		do {
-			Tchar *buf = MakeFreeSpace(addSize);
-			ret = Api::SPrintFL(buf, base::GetReserve(), fmt, args);
-			addSize *= 2;
-		} while(ret < 0 && (errno == ERANGE || errno == 0));
-		if (ret > 0) {
-			GrowSizeNC(ret);
-		} else {
-//			int err = errno;
-			base::FixTail();
-		}
-		return ret;
-	}
-
-	int Format(const Tchar *format, ...)
-	{
-		va_list args;
-		va_start(args, format);
-		int ret = FormatL(format, args);
-		va_end(args);
-		return ret;
-	}
-
-};
-
-typedef CStrT<char   , false> CStrA;
-typedef CStrT<char   , true > CStrCiA;
-typedef CStrT<wchar_t, false> CStrW;
-typedef CStrT<wchar_t, true > CStrCiW;
-
-#endif /* STR_HPP */
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/strapi.hpp
--- a/yapf/strapi.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,88 +0,0 @@
-/* $Id$ */
-
-#ifndef  STRAPI_HPP
-#define  STRAPI_HPP
-
-#include <string.h>
-#include <wchar.h>
-
-#if !defined(_MSC_VER)
-#define _stricmp strcmp
-#define _wcsicmp wcscmp
-#endif //!_MSC_VER
-
-/** String API mapper base - just mapping by character type, not by case sensitivity yet.
-	* Class template CStrApiBaseT declaration is general, but following inline method
-	* definitions are specialized by character type. Class is not used directly, but only
-	* as a base class for template class CStrApiT */
-template <typename Tchar>
-class CStrApiBaseT
-{
-public:
-	/** ::strlen wrapper */
-	static size_t StrLen(const Tchar *s);
-	static int SPrintFL(Tchar *buf, size_t count, const Tchar *fmt, va_list args);
-};
-
-/** ::strlen wrapper specialization for char */
-template <> /*static*/ inline size_t CStrApiBaseT<char>::StrLen(const char *s)
-{
-	return ::strlen(s);
-}
-
-/** ::strlen wrapper specialization for wchar_t */
-template <> /*static*/ inline size_t CStrApiBaseT<wchar_t>::StrLen(const wchar_t *s)
-{
-	return ::wcslen(s);
-}
-
-/** ::vsprintf wrapper specialization for char */
-template <> /*static*/ inline int CStrApiBaseT<char>::SPrintFL(char *buf, size_t count, const char *fmt, va_list args)
-{
-#if defined(_MSC_VER) && (_MSC_VER >= 1400) // VC 8.0 and above
-	return ::vsnprintf_s(buf, count, count - 1, fmt, args);
-#else // ! VC 8.0 and above
-	return ::vsnprintf(buf, count, fmt, args);
-#endif
-}
-
-/** ::vsprintf wrapper specialization for wchar_t */
-template <> /*static*/ inline int CStrApiBaseT<wchar_t>::SPrintFL(wchar_t *buf, size_t count, const wchar_t *fmt, va_list args)
-{
-#if defined(_MSC_VER) && (_MSC_VER >= 1400) // VC 8.0 and above
-	return ::_vsnwprintf_s(buf, count, count - 1, fmt, args);
-#else // ! VC 8.0 and above
-	return ::vswprintf(buf, count, fmt, args);
-#endif
-}
-
-
-
-template <typename Tchar, bool TcaseInsensitive>
-class CStrApiT : public CStrApiBaseT<Tchar>
-{
-public:
-	static int StrCmp(const Tchar *s1, const Tchar *s2);
-};
-
-template <> /*static*/ inline int CStrApiT<char, false>::StrCmp(const char *s1, const char *s2)
-{
-	return ::strcmp(s1, s2);
-}
-
-template <> /*static*/ inline int CStrApiT<char, true>::StrCmp(const char *s1, const char *s2)
-{
-	return ::_stricmp(s1, s2);
-}
-
-template <> /*static*/ inline int CStrApiT<wchar_t, false>::StrCmp(const wchar_t *s1, const wchar_t *s2)
-{
-	return ::wcscmp(s1, s2);
-}
-
-template <> /*static*/ inline int CStrApiT<wchar_t, true>::StrCmp(const wchar_t *s1, const wchar_t *s2)
-{
-	return ::_wcsicmp(s1, s2);
-}
-
-#endif /* STRAPI_HPP */
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf.h
--- a/yapf/yapf.h	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf.h	Mon Jan 01 16:07:21 2007 +0000
@@ -98,7 +98,6 @@
 	bool                m_is_bridge;     ///< last turn passed bridge ramp
 	bool                m_is_station;    ///< last turn passed station
 	int                 m_tiles_skipped; ///< number of skipped tunnel or station tiles
-	Trackdir            m_intermediate_trackdir; ///< when some bridge tiles are skipped, contains direction of the bridge
 } FollowTrack_t;
 
 /** Initializes FollowTrack_t structure */
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf.hpp
--- a/yapf/yapf.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf.hpp	Mon Jan 01 16:07:21 2007 +0000
@@ -71,16 +71,12 @@
 
 typedef CPerfStartFake CPerfStart;
 
-#include "crc32.hpp"
-#include "blob.hpp"
-#include "str.hpp"
-
-const char* GetTrackdirName(Trackdir td);
-CStrA GetTrackdirBitsName(TrackdirBits td_bits);
 
 //#undef FORCEINLINE
 //#define FORCEINLINE inline
 
+#include "crc32.hpp"
+#include "blob.hpp"
 #include "fixedsizearray.hpp"
 #include "array.hpp"
 #include "hashtable.hpp"
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf_common.cpp
--- a/yapf/yapf_common.cpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf_common.cpp	Mon Jan 01 16:07:21 2007 +0000
@@ -27,39 +27,3 @@
 	TRACKDIR_BIT_NONE                    , //14
 	TRACKDIR_BIT_NONE                    , //15
 };
-
-const char* GetTrackdirName(Trackdir td)
-{
-	static const char * const td_names[] = {
-		"INVALID_TRACKDIR",
-		"X_NE",
-		"Y_SE",
-		"UPPER_E",
-		"LOWER_E",
-		"LEFT_S",
-		"RIGHT_S",
-		"<6>",
-		"<7>",
-		"X_SW",
-		"Y_NW",
-		"UPPER_W",
-		"LOWER_W",
-		"LEFT_N",
-		"RIGHT_N",
-		"TRACKDIR_END"
-	};
-	if (((int)td <= (int)TRACKDIR_END)) {
-		int idx = ((int8)td) + 1;
-		return td_names[idx];
-	}
-	return "<invalid value>";
-}
-
-CStrA GetTrackdirBitsName(TrackdirBits td_bits)
-{
-	CStrA name;
-	for(int tdb = td_bits; tdb != 0; tdb = KillFirstBit2x64(tdb)) {
-		name.Format("%s%s", name.Size() > 0 ? "+" : "", GetTrackdirName((Trackdir)FindFirstBit2x64(tdb)));
-	}
-	return name.Transfer();
-}
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf_common.hpp
--- a/yapf/yapf_common.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf_common.hpp	Mon Jan 01 16:07:21 2007 +0000
@@ -50,24 +50,24 @@
 	typedef typename Node::Key Key;               ///< key to hash tables
 
 protected:
-	TileIndex    m_org_tile;                        ///< first origin tile
-	TrackdirBits m_org_td_bits;                    ///< first origin trackdirbits
-	TileIndex    m_rev_tile;                        ///< second (reversed) origin tile
-	TrackdirBits m_rev_td_bits;                   ///< second (reversed) origin trackdir
-	int          m_reverse_penalty;                ///< penalty to be added for using the reversed origin
-	bool         m_treat_first_red_two_way_signal_as_eol; ///< in some cases (leaving station) we need to handle first two-way signal differently
+	TileIndex   m_orgTile;                        ///< first origin tile
+	Trackdir    m_orgTd;                          ///< first origin trackdir
+	TileIndex   m_revTile;                        ///< second (reversed) origin tile
+	Trackdir    m_revTd;                          ///< second (reversed) origin trackdir
+	int         m_reverse_penalty;                ///< penalty to be added for using the reversed origin
+	bool        m_treat_first_red_two_way_signal_as_eol; ///< in some cases (leaving station) we need to handle first two-way signal differently
 
 	/// to access inherited path finder
 	FORCEINLINE Tpf& Yapf() {return *static_cast<Tpf*>(this);}
 
 public:
 	/// set origin (tiles, trackdirs, etc.)
-	void SetOrigin(TileIndex tile, TrackdirBits td_bits, TileIndex tiler = INVALID_TILE, TrackdirBits tdr_bits = INVALID_TRACKDIR_BIT, int reverse_penalty = 0, bool treat_first_red_two_way_signal_as_eol = true)
+	void SetOrigin(TileIndex tile, Trackdir td, TileIndex tiler = INVALID_TILE, Trackdir tdr = INVALID_TRACKDIR, int reverse_penalty = 0, bool treat_first_red_two_way_signal_as_eol = true)
 	{
-		m_org_tile = tile;
-		m_org_td_bits = td_bits;
-		m_rev_tile = tiler;
-		m_rev_td_bits = tdr_bits;
+		m_orgTile = tile;
+		m_orgTd = td;
+		m_revTile = tiler;
+		m_revTd = tdr;
 		m_reverse_penalty = reverse_penalty;
 		m_treat_first_red_two_way_signal_as_eol = treat_first_red_two_way_signal_as_eol;
 	}
@@ -75,22 +75,16 @@
 	/// Called when YAPF needs to place origin nodes into open list
 	void PfSetStartupNodes()
 	{
-		if (m_org_tile != INVALID_TILE && m_org_td_bits != INVALID_TRACKDIR_BIT) {
-			for (TrackdirBits td_bits = m_org_td_bits; td_bits != TRACKDIR_BIT_NONE; td_bits = (TrackdirBits)KillFirstBit2x64(td_bits)) {
-				Node& n = Yapf().CreateNewNode();
-				Trackdir td = (Trackdir)FindFirstBit2x64(td_bits);
-				n.Set(NULL, m_org_tile, td, false);
-				Yapf().AddStartupNode(n);
-			}
+		if (m_orgTile != INVALID_TILE && m_orgTd != INVALID_TRACKDIR) {
+			Node& n1 = Yapf().CreateNewNode();
+			n1.Set(NULL, m_orgTile, m_orgTd, false);
+			Yapf().AddStartupNode(n1);
 		}
-		if (m_rev_tile != INVALID_TILE && m_rev_td_bits != INVALID_TRACKDIR_BIT) {
-			for (TrackdirBits td_bits = m_rev_td_bits; td_bits != TRACKDIR_BIT_NONE; td_bits = (TrackdirBits)KillFirstBit2x64(td_bits)) {
-				Node& n = Yapf().CreateNewNode();
-				Trackdir td = (Trackdir)FindFirstBit2x64(td_bits);
-				n.Set(NULL, m_rev_tile, td, false);
-				n.m_cost = m_reverse_penalty;
-				Yapf().AddStartupNode(n);
-			}
+		if (m_revTile != INVALID_TILE && m_revTd != INVALID_TRACKDIR) {
+			Node& n2 = Yapf().CreateNewNode();
+			n2.Set(NULL, m_revTile, m_revTd, false);
+			n2.m_cost = m_reverse_penalty;
+			Yapf().AddStartupNode(n2);
 		}
 	}
 
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf_costrail.hpp
--- a/yapf/yapf_costrail.hpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf_costrail.hpp	Mon Jan 01 16:07:21 2007 +0000
@@ -189,58 +189,38 @@
 		Trackdir trackdir = n.m_key.m_td;
 		TileType tile_type = GetTileType(tile);
 
-		DEBUG(yapf, 3, "PfCalcCost(Node:tile=%04X td=%s; Parent:tile=%04X td=%s)", tile, GetTrackdirName(trackdir), prev_tile, GetTrackdirName(prev_trackdir));
-
 		RailType rail_type = GetTileRailType(tile, trackdir);
 
 		// detect exit from bridge wormhole
-		Trackdir intermediate_trackdir = INVALID_TRACKDIR;
 		if (IsBridgeTile(tile) && TrackdirToExitdir(ReverseTrackdir(trackdir)) == GetBridgeRampDirection(tile)) {
 			// we are jumping over bridge (possible now with custom bridge heads) we must add the cost of skipped tiles
-			int skipped_tiles = DistanceManhattan(prev_tile, tile) - 1;
-			if (skipped_tiles > 0) {
-				segment_cost += skipped_tiles * YAPF_TILE_LENGTH;
-				DEBUG(yapf, 6, "    Cost: skipped=%d", skipped_tiles * YAPF_TILE_LENGTH);
-				intermediate_trackdir = DiagdirToDiagTrackdir(ReverseDiagDir(GetBridgeRampDirection(tile)));
-			}
+			segment_cost += (DistanceManhattan(prev_tile, tile) - 1) * YAPF_TILE_LENGTH;
 		}
 
 		bool target_seen = Yapf().PfDetectDestination(tile, trackdir);
 
 		while (true) {
-			int tile_cost = Yapf().OneTileCost(tile, trackdir);
-			int curve_cost;
-			if (intermediate_trackdir == INVALID_TRACKDIR) {
-				curve_cost = Yapf().CurveCost(prev_trackdir, trackdir);
-			} else {
-				curve_cost = Yapf().CurveCost(prev_trackdir, intermediate_trackdir) + Yapf().CurveCost(intermediate_trackdir, trackdir);
-				intermediate_trackdir = INVALID_TRACKDIR;
-			}
-			int slope_cost = Yapf().SlopeCost(tile, trackdir);
-			int signal_cost = Yapf().SignalCost(n, tile, trackdir);
-			DEBUG(yapf, 6, "    Cost: tile=%d, curve=%d, slope=%d, signal=%d", tile_cost, curve_cost, slope_cost, signal_cost);
-			segment_cost += tile_cost + curve_cost + slope_cost + signal_cost;
+			segment_cost += Yapf().OneTileCost(tile, trackdir);
+			segment_cost += Yapf().CurveCost(prev_trackdir, trackdir);
+			segment_cost += Yapf().SlopeCost(tile, trackdir);
+			segment_cost += Yapf().SignalCost(n, tile, trackdir);
 			if (n.m_segment->flags_u.flags_s.m_end_of_line) {
-				DEBUG(yapf, 4, "  end: EOL (signal)");
 				break;
 			}
 
 			// finish if we have reached the destination
 			if (target_seen) {
-				DEBUG(yapf, 4, "  end: target_seen");
 				break;
 			}
 
 			// finish on first station tile - segment should end here to avoid target skipping
 			// when cached segments are used
 			if (tile_type == MP_STATION && prev_tile_type != MP_STATION) {
-				DEBUG(yapf, 4, "  end: first station tile");
 				break;
 			}
 
 			// finish also on waypoint - same workaround as for first station tile
 			if (tile_type == MP_RAILWAY && IsRailWaypoint(tile)) {
-				DEBUG(yapf, 4, "  end: waypoint");
 				break;
 			}
 
@@ -249,15 +229,11 @@
 			if (!F.Follow(tile, trackdir)) {
 				// we can't continue?
 				// n.m_segment->flags_u.flags_s.m_end_of_line = true;
-				DEBUG(yapf, 4, "  end: can't foolow (dead end?)");
 				break;
 			}
-			if (F.m_is_bridge && F.m_tiles_skipped > 0) intermediate_trackdir = F.m_intermediate_trackdir;
-			DEBUG(yapf, 4, " next: tile=%04X td=%s", F.m_new_tile, GetTrackdirBitsName(F.m_new_td_bits).Data());
 
 			// if there are more trackdirs available & reachable, we are at the end of segment
 			if (KillFirstBit2x64(F.m_new_td_bits) != 0) {
-				DEBUG(yapf, 4, "  end: choice");
 				break;
 			}
 
@@ -266,23 +242,18 @@
 			{
 				// end segment if train is about to enter simple loop with no junctions
 				// so next time it should stop on the next if
-				if (segment_cost > s_max_segment_cost && IsTileType(F.m_new_tile, MP_RAILWAY)) {
-					DEBUG(yapf, 4, "  end: loop fuse");
+				if (segment_cost > s_max_segment_cost && IsTileType(F.m_new_tile, MP_RAILWAY))
 					break;
-				}
 
 				// stop if train is on simple loop with no junctions
-				if (F.m_new_tile == n.m_key.m_tile && new_td == n.m_key.m_td) {
-					DEBUG(yapf, 4, "  end: loop detected");
+				if (F.m_new_tile == n.m_key.m_tile && new_td == n.m_key.m_td)
 					return false;
-				}
 			}
 
-			// if rail type changes, finish segment (cached segment can't contain more rail types)
+			// if tail type changes, finish segment (cached segment can't contain more rail types)
 			{
 				RailType new_rail_type = GetTileRailType(F.m_new_tile, (Trackdir)FindFirstBit2x64(F.m_new_td_bits));
 				if (new_rail_type != rail_type) {
-					DEBUG(yapf, 4, "  end: rail type changes");
 					break;
 				}
 				rail_type = new_rail_type;
@@ -301,15 +272,12 @@
 
 			// reversing in depot penalty
 			if (tile == prev_tile) {
-				int reverse_in_depot_cost = Yapf().PfGetSettings().rail_depot_reverse_penalty;
-				segment_cost += reverse_in_depot_cost;
-				DEBUG(yapf, 4, "  end: reversing in depot (cost=%d)", reverse_in_depot_cost);
+				segment_cost += Yapf().PfGetSettings().rail_depot_reverse_penalty;
 				break;
 			}
 
 			// if we skipped some tunnel tiles, add their cost
 			segment_cost += YAPF_TILE_LENGTH * F.m_tiles_skipped;
-			DEBUG(yapf, 6, "    Cost: wormhole=%d", YAPF_TILE_LENGTH * F.m_tiles_skipped);
 
 			// add penalty for skipped station tiles
 			if (F.m_is_station)
@@ -317,14 +285,10 @@
 				if (target_seen) {
 					// it is our destination station
 					uint platform_length = F.m_tiles_skipped + 1;
-					int platform_length_cost = PlatformLengthPenalty(platform_length);
-					segment_cost += platform_length_cost;
-					DEBUG(yapf, 6, "    Cost: platform=%d", platform_length_cost);
+					segment_cost += PlatformLengthPenalty(platform_length);
 				} else {
 					// station is not our destination station, apply penalty for skipped platform tiles
-					int station_cost = Yapf().PfGetSettings().rail_station_penalty * F.m_tiles_skipped;
-					segment_cost += station_cost;
-					DEBUG(yapf, 6, "    Cost: station=%d", station_cost);
+					segment_cost += Yapf().PfGetSettings().rail_station_penalty * F.m_tiles_skipped;
 				}
 			}
 
@@ -338,7 +302,6 @@
 
 			// finish if we already exceeded the maximum cost
 			if (m_max_cost > 0 && (parent_cost + first_tile_cost + segment_cost) > m_max_cost) {
-				DEBUG(yapf, 4, "  abort: maximum cost reached");
 				return false;
 			}
 
@@ -346,12 +309,10 @@
 				// we just have done first tile
 				first_tile_cost = segment_cost;
 				segment_cost = 0;
-				DEBUG(yapf, 5, "    TotalCost: first_tile=%d", first_tile_cost);
 
 				// look if we can reuse existing (cached) segment cost
 				if (n.m_segment->m_cost >= 0) {
 					// reuse the cached segment cost
-					DEBUG(yapf, 4, "  end: reusing the cached segment cost");
 					break;
 				}
 			}
@@ -364,18 +325,15 @@
 			// we have just finished first tile
 			first_tile_cost = segment_cost;
 			segment_cost = 0;
-			DEBUG(yapf, 5, "    TotalCost: first_tile=%d", first_tile_cost);
 		}
 
 		// do we have cached segment cost?
 		if (n.m_segment->m_cost >= 0) {
 			// reuse the cached segment cost
 			segment_cost = n.m_segment->m_cost;
-			DEBUG(yapf, 5, "    TotalCost: cached_segment=%d", segment_cost);
 		} else {
 			// save segment cost
 			n.m_segment->m_cost = segment_cost;
-			DEBUG(yapf, 5, "    TotalCost: segment=%d", segment_cost);
 
 			// save end of segment back to the node
 			n.SetLastTileTrackdir(tile, trackdir);
@@ -394,12 +352,10 @@
 				}
 			}
 		}
-		DEBUG(yapf, 5, "    TotalCost: extra=%d", extra_cost);
 
 		// total node cost
 		n.m_cost = parent_cost + first_tile_cost + segment_cost + extra_cost;
-		DEBUG(yapf, 3, "  leaving: last_tile=%04X, last_td=%s, cost=%d", n.m_segment->m_last_tile, GetTrackdirName(n.m_segment->m_last_td), n.m_cost);
-		DEBUG(yapf, 3, " returning %s", n.m_segment->flags_u.flags_s.m_end_of_line ? "false" : "true");
+
 		return !n.m_segment->flags_u.flags_s.m_end_of_line;
 	}
 
diff -r 3b40a41f90d2 -r 6ce400c0a2f4 yapf/yapf_rail.cpp
--- a/yapf/yapf_rail.cpp	Mon Jan 01 10:26:12 2007 +0000
+++ b/yapf/yapf_rail.cpp	Mon Jan 01 16:07:21 2007 +0000
@@ -49,7 +49,7 @@
 	FORCEINLINE bool FindNearestDepotTwoWay(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, TrackdirToTrackdirBits(td1), t2, TrackdirToTrackdirBits(td2), reverse_penalty, true);
+		Yapf().SetOrigin(t1, td1, t2, td2, reverse_penalty, true);
 		Yapf().SetDestination(v);
 		Yapf().SetMaxCost(YAPF_TILE_LENGTH * max_distance);
 
@@ -113,14 +113,7 @@
 	FORCEINLINE Trackdir ChooseRailTrack(Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackdirBits trackdirs, bool *path_not_found)
 	{
 		// set origin and destination nodes
-		if (v->tile == tile) {
-			// probably bridge head
-			trackdirs = (TrackdirBits)(GetTileTrackStatus(tile, TRANSPORT_RAIL) & TRACKDIR_BIT_MASK);
-			trackdirs &= DiagdirReachesTrackdirs(ReverseDiagDir(TrackdirToExitdir(ReverseTrackdir(GetVehicleTrackdir(v)))));
-			Yapf().SetOrigin(tile, trackdirs, INVALID_TILE, INVALID_TRACKDIR_BIT, 1, true);
-		} else {
-			Yapf().SetOrigin(v->tile, TrackdirToTrackdirBits(GetVehicleTrackdir(v)), INVALID_TILE, INVALID_TRACKDIR_BIT, 1, true);
-		}
+		Yapf().SetOrigin(v->tile, GetVehicleTrackdir(v), INVALID_TILE, INVALID_TRACKDIR, 1, true);
 		Yapf().SetDestination(v);
 
 		// find the best path
@@ -142,8 +135,8 @@
 				pNode = pNode->m_parent;
 			}
 			// return trackdir from the best origin node (one of start nodes)
-			Node& best_next_node = (v->tile == tile ? *pNode : *pPrev);
-			assert(v->tile == tile || best_next_node.GetTile() == tile);
+			Node& best_next_node = *pPrev;
+			assert(best_next_node.GetTile() == tile);
 			next_trackdir = best_next_node.GetTrackdir();
 		}
 		return next_trackdir;
@@ -159,7 +152,7 @@
 	{
 		// create pathfinder instance
 		// set origin and destination nodes
-		Yapf().SetOrigin(t1, TrackdirToTrackdirBits(td1), t2, TrackdirToTrackdirBits(td2), 1, false);
+		Yapf().SetOrigin(t1, td1, t2, td2, 1, false);
 		Yapf().SetDestination(v);
 
 		// find the best path