(svn r7759) -Merge: makefile rewrite. This merge features:

 - A proper ./configure, so everything needs to be configured only once, not for every make.
 - Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
 - A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
 - Proper support for OSX universal binaries.
 - Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
 - Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

1 files changed, 445 insertions, 0 deletions

diff --git a/src/table/elrail_data.h b/src/table/elrail_data.h
new file mode 100644
index 000000000..1ed5751b4
--- /dev/null
+++ b/src/table/elrail_data.h
@@ -0,0 +1,445 @@
+/* $Id$ */
+/** @file elrail_data.h Stores all the data for overhead wire and pylon drawing.
+ *  @see elrail.c */
+
+#ifndef ELRAIL_DATA_H
+#define ELRAIL_DATA_H
+
+/** Tile Location group.
+ * This defines whether the X and or Y coordinate of a tile is even */
+typedef enum TLG {
+	XEVEN_YEVEN = 0,
+	XEVEN_YODD  = 1,
+	XODD_YEVEN  = 2,
+	XODD_YODD   = 3,
+	TLG_END
+} TLG;
+
+/** When determining the pylon configuration on the edge, two tiles are taken
+ * into account: the tile being drawn itself (the home tile, the one in
+ * ti->tile), and the neighbouring tile */
+typedef enum {
+	TS_HOME      = 0,
+	TS_NEIGHBOUR = 1,
+
+	TS_END
+} TileSource;
+
+enum {
+	NUM_TRACKS_AT_PCP = 6
+};
+
+/** Which PPPs are possible at all on a given PCP */
+static byte AllowedPPPonPCP[DIAGDIR_END] = {
+	1 << DIR_N | 1 << DIR_E  | 1 << DIR_SE | 1 << DIR_S | 1 << DIR_W  | 1 << DIR_NW,
+	1 << DIR_N | 1 << DIR_NE | 1 << DIR_E  | 1 << DIR_S | 1 << DIR_SW | 1 << DIR_W,
+	1 << DIR_N | 1 << DIR_E  | 1 << DIR_SE | 1 << DIR_S | 1 << DIR_W  | 1 << DIR_NW,
+	1 << DIR_N | 1 << DIR_NE | 1 << DIR_E  | 1 << DIR_S | 1 << DIR_SW | 1 << DIR_W,
+};
+
+/** Which of the PPPs are inside the tile. For the two PPPs on the tile border
+ * the following system is used: if you rotate the PCP so that it is in the
+ * north, the eastern PPP belongs to the tile. */
+static byte OwnedPPPonPCP[DIAGDIR_END] = {
+	1 << DIR_SE | 1 << DIR_S  | 1 << DIR_SW | 1 << DIR_W,
+	1 << DIR_N  | 1 << DIR_SW | 1 << DIR_W  | 1 << DIR_NW,
+	1 << DIR_N  | 1 << DIR_NE | 1 << DIR_E  | 1 << DIR_NW,
+	1 << DIR_NE | 1 << DIR_E  | 1 << DIR_SE | 1 << DIR_S
+};
+
+/** Maps a track bit onto two PCP positions */
+static const DiagDirection PCPpositions[TRACK_END][2] = {
+	{DIAGDIR_NE, DIAGDIR_SW}, /* X */
+	{DIAGDIR_SE, DIAGDIR_NW}, /* Y */
+	{DIAGDIR_NW, DIAGDIR_NE}, /* UPPER */
+	{DIAGDIR_SE, DIAGDIR_SW}, /* LOWER */
+	{DIAGDIR_SW, DIAGDIR_NW}, /* LEFT */
+	{DIAGDIR_NE, DIAGDIR_SE}, /* RIGHT */
+};
+
+#define PCP_NOT_ON_TRACK 0xFF
+/** Preferred points of each trackbit. Those are the ones perpendicular to the
+ * track, plus the point in extension of the track (to mark end-of-track). PCPs
+ * which are not on either end of the track are fully preferred.
+ * @see PCPpositions */
+static byte PreferredPPPofTrackAtPCP[TRACK_END][DIAGDIR_END] = {
+	{    /* X */
+		1 << DIR_NE | 1 << DIR_SE | 1 << DIR_NW, /* NE */
+		PCP_NOT_ON_TRACK,                        /* SE */
+		1 << DIR_SE | 1 << DIR_SW | 1 << DIR_NW, /* SW */
+		PCP_NOT_ON_TRACK                         /* NE */
+	}, { /* Y */
+		PCP_NOT_ON_TRACK,
+		1 << DIR_NE | 1 << DIR_SE | 1 << DIR_SW,
+		PCP_NOT_ON_TRACK,
+		1 << DIR_SW | 1 << DIR_NW | 1 << DIR_NE
+	}, { /* UPPER */
+		1 << DIR_E | 1 << DIR_N | 1 << DIR_S,
+		PCP_NOT_ON_TRACK,
+		PCP_NOT_ON_TRACK,
+		1 << DIR_W | 1 << DIR_N | 1 << DIR_S
+	}, { /* LOWER */
+		PCP_NOT_ON_TRACK,
+		1 << DIR_E | 1 << DIR_N | 1 << DIR_S,
+		1 << DIR_W | 1 << DIR_N | 1 << DIR_S,
+		PCP_NOT_ON_TRACK
+	}, { /* LEFT */
+		PCP_NOT_ON_TRACK,
+		PCP_NOT_ON_TRACK,
+		1 << DIR_S | 1 << DIR_E | 1 << DIR_W,
+		1 << DIR_N | 1 << DIR_E | 1 << DIR_W
+	}, { /* RIGHT */
+		1 << DIR_N | 1 << DIR_E | 1 << DIR_W,
+		1 << DIR_S | 1 << DIR_E | 1 << DIR_W,
+		PCP_NOT_ON_TRACK,
+		PCP_NOT_ON_TRACK
+	}
+};
+#undef PCP_NOT_ON_TRACK
+
+
+#define NUM_IGNORE_GROUPS 3
+#define IGNORE_NONE 0xFF
+/** In case we have a staight line, we place pylon only every two tiles,
+ * so there are certain tiles which we ignore. A straight line is found if
+ * we have exactly two PPPs. */
+static byte IgnoredPCP[NUM_IGNORE_GROUPS][TLG_END][DIAGDIR_END] = {
+	{   /* Ignore group 1, X and Y tracks */
+		{     /* X even, Y even */
+			IGNORE_NONE,
+			1 << DIR_NE | 1 << DIR_SW,
+			1 << DIR_NW | 1 << DIR_SE,
+			IGNORE_NONE
+		}, { /* X even, Y odd  */
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_NW | 1 << DIR_SE,
+			1 << DIR_NE | 1 << DIR_SW
+		}, { /* X odd,  Y even */
+			1 << DIR_NW | 1 << DIR_SE,
+			1 << DIR_NE | 1 << DIR_SW,
+			IGNORE_NONE,
+			IGNORE_NONE
+		}, { /* X odd,  Y odd  */
+			1 << DIR_NW | 1 << DIR_SE,
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_NE | 1 << DIR_SW
+		}
+	},
+	{   /* Ignore group 2, LEFT and RIGHT tracks */
+		{
+			1 << DIR_E | 1 << DIR_W,
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_E | 1 << DIR_W
+		}, {
+			IGNORE_NONE,
+			1 << DIR_E | 1 << DIR_W,
+			1 << DIR_E | 1 << DIR_W,
+			IGNORE_NONE
+		}, {
+			IGNORE_NONE,
+			1 << DIR_E | 1 << DIR_W,
+			1 << DIR_E | 1 << DIR_W,
+			IGNORE_NONE
+		}, {
+			1 << DIR_E | 1 << DIR_W,
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_E | 1 << DIR_W
+		}
+	},
+	{   /* Ignore group 3, UPPER and LOWER tracks */
+		{
+			1 << DIR_N | 1 << DIR_S,
+			1 << DIR_N | 1 << DIR_S,
+			IGNORE_NONE,
+			IGNORE_NONE
+		}, {
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_N | 1 << DIR_S,
+			1 << DIR_N | 1 << DIR_S
+		}, {
+			IGNORE_NONE,
+			IGNORE_NONE,
+			1 << DIR_N | 1 << DIR_S ,
+			1 << DIR_N | 1 << DIR_S
+		}, {
+			1 << DIR_N | 1 << DIR_S,
+			1 << DIR_N | 1 << DIR_S,
+			IGNORE_NONE,
+			IGNORE_NONE
+		}
+	}
+};
+
+#undef NO_IGNORE
+
+/** Which pylons can definately NOT be built */
+static byte DisallowedPPPofTrackAtPCP[TRACK_END][DIAGDIR_END] = {
+	{1 << DIR_SW | 1 << DIR_NE, 0,           1 << DIR_SW | 1 << DIR_NE, 0          }, /* X */
+	{0,           1 << DIR_NW | 1 << DIR_SE, 0,           1 << DIR_NW | 1 << DIR_SE}, /* Y */
+	{1 << DIR_W | 1 << DIR_E,  0,           0,           1 << DIR_W | 1 << DIR_E }, /* UPPER */
+	{0,           1 << DIR_W | 1 << DIR_E,  1 << DIR_W | 1 << DIR_E,  0          }, /* LOWER */
+	{0,           0,           1 << DIR_S | 1 << DIR_N,  1 << DIR_N | 1 << DIR_S }, /* LEFT */
+	{1 << DIR_S | 1 << DIR_N,  1 << DIR_S | 1 << DIR_N,  0,           0,         }, /* RIGHT */
+};
+
+/* This array stores which track bits can meet at a tile edge */
+static const Track TracksAtPCP[DIAGDIR_END][NUM_TRACKS_AT_PCP] = {
+	{TRACK_X, TRACK_X, TRACK_UPPER, TRACK_LOWER, TRACK_LEFT, TRACK_RIGHT},
+	{TRACK_Y, TRACK_Y, TRACK_UPPER, TRACK_LOWER, TRACK_LEFT, TRACK_RIGHT},
+	{TRACK_X, TRACK_X, TRACK_UPPER, TRACK_LOWER, TRACK_LEFT, TRACK_RIGHT},
+	{TRACK_Y, TRACK_Y, TRACK_UPPER, TRACK_LOWER, TRACK_LEFT, TRACK_RIGHT},
+};
+
+/* takes each of the 6 track bits from the array above and
+ * assigns it to the home tile or neighbour tile */
+static const TileSource TrackSourceTile[DIAGDIR_END][NUM_TRACKS_AT_PCP] = {
+	{TS_HOME, TS_NEIGHBOUR, TS_HOME     , TS_NEIGHBOUR, TS_NEIGHBOUR, TS_HOME     },
+	{TS_HOME, TS_NEIGHBOUR, TS_NEIGHBOUR, TS_HOME     , TS_NEIGHBOUR, TS_HOME     },
+	{TS_HOME, TS_NEIGHBOUR, TS_NEIGHBOUR, TS_HOME     , TS_HOME     , TS_NEIGHBOUR},
+	{TS_HOME, TS_NEIGHBOUR, TS_HOME     , TS_NEIGHBOUR, TS_HOME     , TS_NEIGHBOUR},
+};
+
+/* Several PPPs maybe exist, here they are sorted in order of preference. */
+static const Direction PPPorder[DIAGDIR_END][TLG_END][DIR_END] = {    /*  X  -  Y  */
+	{   /* PCP 0 */
+		{DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_N, DIR_E, DIR_S, DIR_W}, /* evn - evn */
+		{DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_S, DIR_W, DIR_N, DIR_E}, /* evn - odd */
+		{DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_S, DIR_W, DIR_N, DIR_E}, /* odd - evn */
+		{DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_N, DIR_E, DIR_S, DIR_W}, /* odd - odd */
+	}, {/* PCP 1 */
+		{DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_S, DIR_E, DIR_N, DIR_W}, /* evn - evn */
+		{DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_N, DIR_W, DIR_S, DIR_E}, /* evn - odd */
+		{DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_N, DIR_W, DIR_S, DIR_E}, /* odd - evn */
+		{DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_S, DIR_E, DIR_N, DIR_W}, /* odd - odd */
+	}, {/* PCP 2 */
+		{DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_S, DIR_W, DIR_N, DIR_E}, /* evn - evn */
+		{DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_N, DIR_E, DIR_S, DIR_W}, /* evn - odd */
+		{DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_N, DIR_E, DIR_S, DIR_W}, /* odd - evn */
+		{DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_S, DIR_W, DIR_N, DIR_E}, /* odd - odd */
+	}, {/* PCP 3 */
+		{DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_N, DIR_W, DIR_S, DIR_E}, /* evn - evn */
+		{DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_S, DIR_E, DIR_N, DIR_W}, /* evn - odd */
+		{DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_S, DIR_E, DIR_N, DIR_W}, /* odd - evn */
+		{DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_N, DIR_W, DIR_S, DIR_E}, /* odd - odd */
+	}
+};
+/* Geometric placement of the PCP relative to the tile origin */
+static const int8 x_pcp_offsets[DIAGDIR_END] = {0,  8, 15, 8};
+static const int8 y_pcp_offsets[DIAGDIR_END] = {8, 15,  8, 0};
+/* Geometric placement of the PPP relative to the PCP*/
+static const int8 x_ppp_offsets[DIR_END] = {-3, -4, -3,  0,  3,  4,  3,  0};
+static const int8 y_ppp_offsets[DIR_END] = {-3,  0,  3,  4,  3,  0, -3, -4};
+/* The type of pylon to draw at each PPP */
+static const SpriteID pylons_normal[] = {
+	SPR_PYLON_EW_N,
+	SPR_PYLON_Y_NE,
+	SPR_PYLON_NS_E,
+	SPR_PYLON_X_SE,
+	SPR_PYLON_EW_S,
+	SPR_PYLON_Y_SW,
+	SPR_PYLON_NS_W,
+	SPR_PYLON_X_NW
+};
+
+static const SpriteID pylons_bridge[] = {
+	SPR_PYLON_X_NW,
+	SPR_PYLON_X_SE,
+	SPR_PYLON_Y_NE,
+	SPR_PYLON_Y_SW
+};
+
+typedef struct {
+	SpriteID image;
+	int8 x_offset;
+	int8 y_offset;
+	int8 x_size;
+	int8 y_size;
+	int8 z_size;
+	int8 z_offset;
+} SortableSpriteStruct;
+
+enum {
+	/** Distance between wire and rail */
+	ELRAIL_ELEVATION = 8,
+	/** Corrects an off-by-one error in some places (tileh 12 and 9) (TODO -- find source of error) */
+	ELRAIL_ELEV_CORR = ELRAIL_ELEVATION + 1,
+	/** Wires that a draw one level higher than the north corner. */
+	ELRAIL_ELEVRAISE = ELRAIL_ELEVATION + TILE_HEIGHT
+};
+
+static const SortableSpriteStruct CatenarySpriteData[] = {
+/* X direction */
+	/* Flat tiles: */
+		/* Wires */
+	{ SPR_WIRE_X_SW,          0,  8, 16,  1,  1, ELRAIL_ELEVATION }, //! 0: Wire in X direction, pylon on the SW end only
+	{ SPR_WIRE_X_NE,          0,  8, 16,  1,  1, ELRAIL_ELEVATION }, //! 1: Wire in X direction, pylon on the NE end
+	{ SPR_WIRE_X_SHORT,       0,  8, 16,  1,  1, ELRAIL_ELEVATION }, //! 2: Wire in X direction, pylon on both ends
+
+	/* "up" tiles */
+		/* Wires */
+	{ SPR_WIRE_X_SW_UP,       0,  8, 16,  8,  1, ELRAIL_ELEVRAISE }, //! 3: Wire in X pitch up, pylon on the SW end only
+	{ SPR_WIRE_X_NE_UP,       0,  8, 16,  8,  1, ELRAIL_ELEVRAISE }, //! 4: Wire in X pitch up, pylon on the NE end
+	{ SPR_WIRE_X_SHORT_UP,    0,  8, 16,  8,  1, ELRAIL_ELEVRAISE }, //! 5: Wire in X pitch up, pylon on both ends
+
+	/* "down" tiles */
+		/* Wires */
+	{ SPR_WIRE_X_SW_DOWN,     0,  8, 16,  8,  1, ELRAIL_ELEV_CORR }, //! 6: Wire in X pitch down, pylon on the SW end
+	{ SPR_WIRE_X_NE_DOWN,     0,  8, 16,  8,  1, ELRAIL_ELEV_CORR }, //! 7: Wire in X pitch down, pylon on the NE end
+	{ SPR_WIRE_X_SHORT_DOWN,  0,  8, 16,  8,  1, ELRAIL_ELEV_CORR }, //! 8: Wire in X pitch down, pylon on both ends
+
+
+/* Y direction */
+	/* Flat tiles: */
+		/* Wires */
+	{ SPR_WIRE_Y_SE,          8,  0,  1, 16,  1, ELRAIL_ELEVATION }, //! 9: Wire in Y direction, pylon on the SE end only
+	{ SPR_WIRE_Y_NW,          8,  0,  1, 16,  1, ELRAIL_ELEVATION }, //!10: Wire in Y direction, pylon on the NW end
+	{ SPR_WIRE_Y_SHORT,       8,  0,  1, 16,  1, ELRAIL_ELEVATION }, //!11: Wire in Y direction, pylon on both ends
+
+	/* "up" tiles */
+		/* Wires */
+	{ SPR_WIRE_Y_SE_UP,       8,  0,  8, 16,  1, ELRAIL_ELEVRAISE }, //!12: Wire in Y pitch up, pylon on the SE end only
+	{ SPR_WIRE_Y_NW_UP,       8,  0,  8, 16,  1, ELRAIL_ELEVRAISE }, //!13: Wire in Y pitch up, pylon on the NW end
+	{ SPR_WIRE_Y_SHORT_UP,    8,  0,  8, 16,  1, ELRAIL_ELEVRAISE }, //!14: Wire in Y pitch up, pylon on both ends
+
+	/* "down" tiles */
+		/* Wires */
+	{ SPR_WIRE_Y_SE_DOWN,     8,  0,  8, 16,  1, ELRAIL_ELEV_CORR }, //!15: Wire in Y pitch down, pylon on the SE end
+	{ SPR_WIRE_Y_NW_DOWN,     8,  0,  8, 16,  1, ELRAIL_ELEV_CORR }, //!16: Wire in Y pitch down, pylon on the NW end
+	{ SPR_WIRE_Y_SHORT_DOWN,  8,  0,  8, 16,  1, ELRAIL_ELEV_CORR }, //!17: Wire in Y pitch down, pylon on both ends
+
+/* NS Direction */
+	{ SPR_WIRE_NS_SHORT,      8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!18: LEFT  trackbit wire, pylon on both ends
+	{ SPR_WIRE_NS_SHORT,      0,  8,  8,  8,  1, ELRAIL_ELEVATION }, //!19: RIGHT trackbit wire, pylon on both ends
+
+	{ SPR_WIRE_NS_N,          8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!20: LEFT  trackbit wire, pylon on N end
+	{ SPR_WIRE_NS_N,          0,  8,  8,  8,  1, ELRAIL_ELEVATION }, //!21: RIGHT trackbit wire, pylon on N end
+
+	{ SPR_WIRE_NS_S,          8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!22: LEFT  trackbit wire, pylon on S end
+	{ SPR_WIRE_NS_S,          0,  8,  8,  8,  1, ELRAIL_ELEVATION }, //!23: RIGHT trackbit wire, pylon on S end
+
+/* EW Direction */
+	{ SPR_WIRE_EW_SHORT,      8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!24: UPPER trackbit wire, pylon on both ends
+	{ SPR_WIRE_EW_SHORT,     16,  8,  8,  8,  1, ELRAIL_ELEVATION }, //!25: LOWER trackbit wire, pylon on both ends
+
+	{ SPR_WIRE_EW_W,          8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!28: UPPER trackbit wire, pylon on both ends
+	{ SPR_WIRE_EW_W,         16,  8,  8,  8,  1, ELRAIL_ELEVATION }, //!29: LOWER trackbit wire, pylon on both ends
+
+	{ SPR_WIRE_EW_E,          8,  0,  8,  8,  1, ELRAIL_ELEVATION }, //!32: UPPER trackbit wire, pylon on both ends
+	{ SPR_WIRE_EW_E,         16,  8,  8,  8,  1, ELRAIL_ELEVATION }  //!33: LOWER trackbit wire, pylon on both ends
+};
+
+static const SortableSpriteStruct CatenarySpriteData_Depot[] = {
+	{ SPR_WIRE_DEPOT_NE,      0,  8,  8,  1,  1, ELRAIL_ELEVATION }, //! Wire for NE depot exit
+	{ SPR_WIRE_DEPOT_SE,      8,  0,  1,  8,  1, ELRAIL_ELEVATION }, //! Wire for SE depot exit
+	{ SPR_WIRE_DEPOT_SW,      0,  8,  8,  1,  1, ELRAIL_ELEVATION }, //! Wire for SW depot exit
+	{ SPR_WIRE_DEPOT_NW,      8,  0,  1,  8,  1, ELRAIL_ELEVATION }  //! Wire for NW depot exit
+};
+
+/** Refers to a certain element of the catenary.
+ * Identifiers for Wires:
+ * <ol><li>Direction of the wire</li>
+ * <li>Slope of the tile for diagonals, placement inside the track for horiz/vertical pieces</li>
+ * <li>Place where a pylon shoule be</li></ol>
+ * Identifiers for Pylons:
+ * <ol><li>Direction of the wire</li>
+ * <li>Slope of the tile</li>
+ * <li>Position of the Pylon relative to the track</li>
+ * <li>Position of the Pylon inside the tile</li></ol>
+ */
+typedef enum {
+	WIRE_X_FLAT_SW,
+	WIRE_X_FLAT_NE,
+	WIRE_X_FLAT_BOTH,
+
+	WIRE_X_UP_SW,
+	WIRE_X_UP_NE,
+	WIRE_X_UP_BOTH,
+
+	WIRE_X_DOWN_SW,
+	WIRE_X_DOWN_NE,
+	WIRE_X_DOWN_BOTH,
+
+	WIRE_Y_FLAT_SE,
+	WIRE_Y_FLAT_NW,
+	WIRE_Y_FLAT_BOTH,
+
+	WIRE_Y_UP_SE,
+	WIRE_Y_UP_NW,
+	WIRE_Y_UP_BOTH,
+
+	WIRE_Y_DOWN_SE,
+	WIRE_Y_DOWN_NW,
+	WIRE_Y_DOWN_BOTH,
+
+	WIRE_NS_W_BOTH,
+	WIRE_NS_E_BOTH,
+
+	WIRE_NS_W_N,
+	WIRE_NS_E_N,
+
+	WIRE_NS_W_S,
+	WIRE_NS_E_S,
+
+	WIRE_EW_N_BOTH,
+	WIRE_EW_S_BOTH,
+
+	WIRE_EW_N_W,
+	WIRE_EW_S_W,
+
+	WIRE_EW_N_E,
+	WIRE_EW_S_E,
+
+	INVALID_CATENARY = 0xFF
+} CatenarySprite;
+
+/* Selects a Wire (with white and grey ends) depending on whether:
+ * a) none (should never happen)
+ * b) the first
+ * c) the second
+ * d) both
+ * PCP exists.*/
+static const CatenarySprite Wires[5][TRACK_END][4] = {
+	{ /* Tileh == 0 */
+		{INVALID_CATENARY, WIRE_X_FLAT_NE,   WIRE_X_FLAT_SW,   WIRE_X_FLAT_BOTH},
+		{INVALID_CATENARY, WIRE_Y_FLAT_SE,   WIRE_Y_FLAT_NW,   WIRE_Y_FLAT_BOTH},
+		{INVALID_CATENARY, WIRE_EW_N_W,      WIRE_EW_N_E,      WIRE_EW_N_BOTH},
+		{INVALID_CATENARY, WIRE_EW_S_E,      WIRE_EW_S_W,      WIRE_EW_S_BOTH},
+		{INVALID_CATENARY, WIRE_NS_W_S,      WIRE_NS_W_N,      WIRE_NS_W_BOTH},
+		{INVALID_CATENARY, WIRE_NS_E_N,      WIRE_NS_E_S,      WIRE_NS_E_BOTH},
+	}, { /* Tileh == 3 */
+		{INVALID_CATENARY, WIRE_X_UP_NE,     WIRE_X_UP_SW,     WIRE_X_UP_BOTH},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+	}, { /* Tileh == 6 */
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, WIRE_Y_UP_SE,     WIRE_Y_UP_NW,     WIRE_Y_UP_BOTH},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+	}, { /* Tileh == 9 */
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, WIRE_Y_DOWN_SE,   WIRE_Y_DOWN_NW,   WIRE_Y_DOWN_BOTH},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+	}, { /* Tileh == 12 */
+		{INVALID_CATENARY, WIRE_X_DOWN_NE,   WIRE_X_DOWN_SW,   WIRE_X_DOWN_BOTH},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+		{INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY, INVALID_CATENARY},
+	}
+};
+
+#endif /* ELRAIL_DATA_H */