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(svn r15271) -Codechange: Use offsets for drawing elrail wires & pylons instead of absolute sprite IDs.

Browse Source
pull/155/head
peter1138 16 years ago
parent 53fe1afa1f
commit 4546a29729
3 changed files with 141 additions and 108 deletions
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42
src/elrail.cpp
Unescape Escape View File

@ -122,6 +122,22 @@ static TrackBits GetRailTrackBitsUniversal(TileIndex t, byte *override)
}
}
/**
* Get the base wire sprite to use.
*/
static inline SpriteID GetWireBase(TileIndex tile)
{
return SPR_WIRE_BASE;
}
/**
* Get the base pylon sprite to use.
*/
static inline SpriteID GetPylonBase(TileIndex tile)
{
return SPR_PYLON_BASE;
}
/** Corrects the tileh for certain tile types. Returns an effective tileh for the track on the tile.
* @param tile The tile to analyse
* @param *tileh the tileh
@ -185,10 +201,12 @@ void DrawCatenaryOnTunnel(const TileInfo *ti)
DiagDirection dir = GetTunnelBridgeDirection(ti->tile);
SpriteID wire_base = GetWireBase(ti->tile);
const SortableSpriteStruct *sss = &CatenarySpriteData_Tunnel[dir];
const int *BB_data = _tunnel_wire_BB[dir];
AddSortableSpriteToDraw(
sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
BB_data[2] - sss->x_offset, BB_data[3] - sss->y_offset, BB_Z_SEPARATOR - sss->z_offset + 1,
GetTileZ(ti->tile) + sss->z_offset,
IsTransparencySet(TO_CATENARY),
@ -231,6 +249,8 @@ static void DrawCatenaryRailway(const TileInfo *ti)
AdjustTileh(ti->tile, &tileh[TS_HOME]);
SpriteID pylon_base = GetPylonBase(ti->tile);
for (DiagDirection i = DIAGDIR_NE; i < DIAGDIR_END; i++) {
TileIndex neighbour = ti->tile + TileOffsByDiagDir(i);
Foundation foundation = FOUNDATION_NONE;
@ -337,7 +357,7 @@ static void DrawCatenaryRailway(const TileInfo *ti)
continue; /* No neighbour, go looking for a better position */
}
AddSortableSpriteToDraw(pylon_sprites[temp], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE,
AddSortableSpriteToDraw(pylon_base + pylon_sprites[temp], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE,
elevation, IsTransparencySet(TO_CATENARY), -1, -1);
break; /* We already have drawn a pylon, bail out */
@ -356,6 +376,8 @@ static void DrawCatenaryRailway(const TileInfo *ti)
if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
}
SpriteID wire_base = GetWireBase(ti->tile);
/* Drawing of pylons is finished, now draw the wires */
for (Track t = TRACK_BEGIN; t < TRACK_END; t++) {
if (HasBit(trackconfig[TS_HOME], t)) {
@ -374,7 +396,7 @@ static void DrawCatenaryRailway(const TileInfo *ti)
* Therefore it is safe to use GetSlopeZ() for the elevation.
* Also note, that the result of GetSlopeZ() is very special for bridge-ramps.
*/
AddSortableSpriteToDraw(sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
AddSortableSpriteToDraw(wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
sss->x_size, sss->y_size, sss->z_size, GetSlopeZ(ti->x + sss->x_offset, ti->y + sss->y_offset) + sss->z_offset,
IsTransparencySet(TO_CATENARY));
}
@ -407,11 +429,15 @@ void DrawCatenaryOnBridge(const TileInfo *ti)
height = GetBridgeHeight(end);
AddSortableSpriteToDraw(sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
SpriteID wire_base = GetWireBase(start);
AddSortableSpriteToDraw(wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
sss->x_size, sss->y_size, sss->z_size, height + sss->z_offset,
IsTransparencySet(TO_CATENARY)
);
SpriteID pylon_base = GetPylonBase(start);
/* Finished with wires, draw pylons */
/* every other tile needs a pylon on the northern end */
if (num % 2) {
@ -420,7 +446,7 @@ void DrawCatenaryOnBridge(const TileInfo *ti)
if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
AddSortableSpriteToDraw(pylon_base + pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
}
/* need a pylon on the southern end of the bridge */
@ -430,7 +456,7 @@ void DrawCatenaryOnBridge(const TileInfo *ti)
if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
AddSortableSpriteToDraw(pylon_base + pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
}
}
@ -441,9 +467,11 @@ void DrawCatenary(const TileInfo *ti)
if (IsRailDepot(ti->tile)) {
const SortableSpriteStruct *sss = &CatenarySpriteData_Depot[GetRailDepotDirection(ti->tile)];
SpriteID wire_base = GetWireBase(ti->tile);
/* This wire is not visible with the default depot sprites */
AddSortableSpriteToDraw(
sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
sss->x_size, sss->y_size, sss->z_size,
GetTileMaxZ(ti->tile) + sss->z_offset,
IsTransparencySet(TO_CATENARY)

148
src/table/elrail_data.h
Unescape Escape View File

@ -235,20 +235,72 @@ static const int8 y_pcp_offsets[DIAGDIR_END] = {8, 16, 8, 0};
/* Geometric placement of the PPP relative to the PCP*/
static const int8 x_ppp_offsets[DIR_END] = {-2, -4, -2, 0, 2, 4, 2, 0};
static const int8 y_ppp_offsets[DIR_END] = {-2, 0, 2, 4, 2, 0, -2, -4};
/**
* Offset for pylon sprites from the base pylon sprite.
*/
enum PylonSpriteOffset {
PSO_Y_NE,
PSO_Y_SW,
PSO_X_NW,
PSO_X_SE,
PSO_EW_N,
PSO_EW_S,
PSO_NS_W,
PSO_NS_E,
};
/* The type of pylon to draw at each PPP */
static const SpriteID pylon_sprites[] = {
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 uint8 pylon_sprites[] = {
PSO_EW_N,
PSO_Y_NE,
PSO_NS_E,
PSO_X_SE,
PSO_EW_S,
PSO_Y_SW,
PSO_NS_W,
PSO_X_NW,
};
/**
* Offset for wire sprites from the base wire sprite.
*/
enum WireSpriteOffset {
WSO_X_SHORT,
WSO_Y_SHORT,
WSO_EW_SHORT,
WSO_NS_SHORT,
WSO_X_SHORT_DOWN,
WSO_Y_SHORT_UP,
WSO_X_SHORT_UP,
WSO_Y_SHORT_DOWN,
WSO_X_SW,
WSO_Y_SE,
WSO_EW_E,
WSO_NS_S,
WSO_X_SW_DOWN,
WSO_Y_SE_UP,
WSO_X_SW_UP,
WSO_Y_SE_DOWN,
WSO_X_NE,
WSO_Y_NW,
WSO_EW_W,
WSO_NS_N,
WSO_X_NE_DOWN,
WSO_Y_NW_UP,
WSO_X_NE_UP,
WSO_Y_NW_DOWN,
WSO_ENTRANCE_NE,
WSO_ENTRANCE_SE,
WSO_ENTRANCE_SW,
WSO_ENTRANCE_NW,
};
struct SortableSpriteStruct {
SpriteID image;
uint8 image_offset;
int8 x_offset;
int8 y_offset;
int8 x_size;
@ -268,75 +320,75 @@ static const SortableSpriteStruct CatenarySpriteData[] = {
/* X direction */
/* Flat tiles: */
/* Wires */
{ SPR_WIRE_X_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 0: Wire in X direction, pylon on the SW end only
{ SPR_WIRE_X_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 1: Wire in X direction, pylon on the NE end
{ SPR_WIRE_X_SHORT, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 2: Wire in X direction, pylon on both ends
{ WSO_X_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 0: Wire in X direction, pylon on the SW end only
{ WSO_X_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 1: Wire in X direction, pylon on the NE end
{ WSO_X_SHORT, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! 2: Wire in X direction, pylon on both ends
/* "up" tiles */
/* Wires */
{ SPR_WIRE_X_SW_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 3: Wire in X pitch up, pylon on the SW end only
{ SPR_WIRE_X_NE_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 4: Wire in X pitch up, pylon on the NE end
{ SPR_WIRE_X_SHORT_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 5: Wire in X pitch up, pylon on both ends
{ WSO_X_SW_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 3: Wire in X pitch up, pylon on the SW end only
{ WSO_X_NE_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 4: Wire in X pitch up, pylon on the NE end
{ WSO_X_SHORT_UP, 0, 7, 15, 8, 1, ELRAIL_ELEVRAISE }, //! 5: Wire in X pitch up, pylon on both ends
/* "down" tiles */
/* Wires */
{ SPR_WIRE_X_SW_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 6: Wire in X pitch down, pylon on the SW end
{ SPR_WIRE_X_NE_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 7: Wire in X pitch down, pylon on the NE end
{ SPR_WIRE_X_SHORT_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 8: Wire in X pitch down, pylon on both ends
{ WSO_X_SW_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 6: Wire in X pitch down, pylon on the SW end
{ WSO_X_NE_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 7: Wire in X pitch down, pylon on the NE end
{ WSO_X_SHORT_DOWN, 0, 7, 15, 8, 1, ELRAIL_ELEVATION }, //! 8: Wire in X pitch down, pylon on both ends
/* Y direction */
/* Flat tiles: */
/* Wires */
{ SPR_WIRE_Y_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! 9: Wire in Y direction, pylon on the SE end only
{ SPR_WIRE_Y_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //!10: Wire in Y direction, pylon on the NW end
{ SPR_WIRE_Y_SHORT, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //!11: Wire in Y direction, pylon on both ends
{ WSO_Y_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! 9: Wire in Y direction, pylon on the SE end only
{ WSO_Y_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //!10: Wire in Y direction, pylon on the NW end
{ WSO_Y_SHORT, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //!11: Wire in Y direction, pylon on both ends
/* "up" tiles */
/* Wires */
{ SPR_WIRE_Y_SE_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!12: Wire in Y pitch up, pylon on the SE end only
{ SPR_WIRE_Y_NW_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!13: Wire in Y pitch up, pylon on the NW end
{ SPR_WIRE_Y_SHORT_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!14: Wire in Y pitch up, pylon on both ends
{ WSO_Y_SE_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!12: Wire in Y pitch up, pylon on the SE end only
{ WSO_Y_NW_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!13: Wire in Y pitch up, pylon on the NW end
{ WSO_Y_SHORT_UP, 7, 0, 8, 15, 1, ELRAIL_ELEVRAISE }, //!14: Wire in Y pitch up, pylon on both ends
/* "down" tiles */
/* Wires */
{ SPR_WIRE_Y_SE_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!15: Wire in Y pitch down, pylon on the SE end
{ SPR_WIRE_Y_NW_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!16: Wire in Y pitch down, pylon on the NW end
{ SPR_WIRE_Y_SHORT_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!17: Wire in Y pitch down, pylon on both ends
{ WSO_Y_SE_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!15: Wire in Y pitch down, pylon on the SE end
{ WSO_Y_NW_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!16: Wire in Y pitch down, pylon on the NW end
{ WSO_Y_SHORT_DOWN, 7, 0, 8, 15, 1, ELRAIL_ELEVATION }, //!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
{ WSO_NS_SHORT, 8, 0, 8, 8, 1, ELRAIL_ELEVATION }, //!18: LEFT trackbit wire, pylon on both ends
{ WSO_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
{ WSO_NS_N, 8, 0, 8, 8, 1, ELRAIL_ELEVATION }, //!20: LEFT trackbit wire, pylon on N end
{ WSO_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
{ WSO_NS_S, 8, 0, 8, 8, 1, ELRAIL_ELEVATION }, //!22: LEFT trackbit wire, pylon on S end
{ WSO_NS_S, 0, 8, 8, 8, 1, ELRAIL_ELEVATION }, //!23: RIGHT trackbit wire, pylon on S end
/* EW Direction */
{ SPR_WIRE_EW_SHORT, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!24: UPPER trackbit wire, pylon on both ends
{ SPR_WIRE_EW_SHORT, 15, 8, 3, 3, 1, ELRAIL_ELEVATION }, //!25: LOWER trackbit wire, pylon on both ends
{ WSO_EW_SHORT, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!24: UPPER trackbit wire, pylon on both ends
{ WSO_EW_SHORT, 15, 8, 3, 3, 1, ELRAIL_ELEVATION }, //!25: LOWER trackbit wire, pylon on both ends
{ SPR_WIRE_EW_W, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!28: UPPER trackbit wire, pylon on both ends
{ SPR_WIRE_EW_W, 15, 8, 3, 3, 1, ELRAIL_ELEVATION }, //!29: LOWER trackbit wire, pylon on both ends
{ WSO_EW_W, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!28: UPPER trackbit wire, pylon on both ends
{ WSO_EW_W, 15, 8, 3, 3, 1, ELRAIL_ELEVATION }, //!29: LOWER trackbit wire, pylon on both ends
{ SPR_WIRE_EW_E, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!32: UPPER trackbit wire, pylon on both ends
{ SPR_WIRE_EW_E, 15, 8, 3, 3, 1, ELRAIL_ELEVATION } //!33: LOWER trackbit wire, pylon on both ends
{ WSO_EW_E, 7, 0, 1, 1, 1, ELRAIL_ELEVATION }, //!32: UPPER trackbit wire, pylon on both ends
{ WSO_EW_E, 15, 8, 3, 3, 1, ELRAIL_ELEVATION } //!33: LOWER trackbit wire, pylon on both ends
};
static const SortableSpriteStruct CatenarySpriteData_Depot[] = {
{ SPR_WIRE_DEPOT_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for NE depot exit
{ SPR_WIRE_DEPOT_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! Wire for SE depot exit
{ SPR_WIRE_DEPOT_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for SW depot exit
{ SPR_WIRE_DEPOT_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION } //! Wire for NW depot exit
{ WSO_ENTRANCE_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for NE depot exit
{ WSO_ENTRANCE_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! Wire for SE depot exit
{ WSO_ENTRANCE_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for SW depot exit
{ WSO_ENTRANCE_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION } //! Wire for NW depot exit
};
static const SortableSpriteStruct CatenarySpriteData_Tunnel[] = {
{ SPR_WIRE_TUNNEL_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for NE tunnel exit
{ SPR_WIRE_TUNNEL_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! Wire for SE tunnel exit
{ SPR_WIRE_TUNNEL_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for SW tunnel exit
{ SPR_WIRE_TUNNEL_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION } //! Wire for NW tunnel exit
{ WSO_ENTRANCE_NE, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for NE tunnel exit
{ WSO_ENTRANCE_SE, 7, 0, 1, 15, 1, ELRAIL_ELEVATION }, //! Wire for SE tunnel exit
{ WSO_ENTRANCE_SW, 0, 7, 15, 1, 1, ELRAIL_ELEVATION }, //! Wire for SW tunnel exit
{ WSO_ENTRANCE_NW, 7, 0, 1, 15, 1, ELRAIL_ELEVATION } //! Wire for NW tunnel exit
};

59
src/table/sprites.h
Unescape Escape View File

@ -379,59 +379,12 @@ enum Sprites {
SPR_TRACK_FENCE_SLOPE_NE = 1307,
SPR_TRACK_FENCE_SLOPE_NW = 1308,
/* Elrail stuff */
/* Wires. First identifier is the direction of the track, second is the required placement of the pylon.
* "short" denotes a wire that requires a pylon on each end. Third identifier is the direction of the slope
* (in positive coordinate direction) */
SPR_WIRE_X_SHORT = SPR_ELRAIL_BASE + 0,
SPR_WIRE_Y_SHORT = SPR_ELRAIL_BASE + 1,
SPR_WIRE_EW_SHORT = SPR_ELRAIL_BASE + 2,
SPR_WIRE_NS_SHORT = SPR_ELRAIL_BASE + 3,
SPR_WIRE_X_SHORT_DOWN = SPR_ELRAIL_BASE + 4,
SPR_WIRE_Y_SHORT_UP = SPR_ELRAIL_BASE + 5,
SPR_WIRE_X_SHORT_UP = SPR_ELRAIL_BASE + 6,
SPR_WIRE_Y_SHORT_DOWN = SPR_ELRAIL_BASE + 7,
SPR_WIRE_X_SW = SPR_ELRAIL_BASE + 8,
SPR_WIRE_Y_SE = SPR_ELRAIL_BASE + 9,
SPR_WIRE_EW_E = SPR_ELRAIL_BASE + 10,
SPR_WIRE_NS_S = SPR_ELRAIL_BASE + 11,
SPR_WIRE_X_SW_DOWN = SPR_ELRAIL_BASE + 12,
SPR_WIRE_Y_SE_UP = SPR_ELRAIL_BASE + 13,
SPR_WIRE_X_SW_UP = SPR_ELRAIL_BASE + 14,
SPR_WIRE_Y_SE_DOWN = SPR_ELRAIL_BASE + 15,
SPR_WIRE_X_NE = SPR_ELRAIL_BASE + 16,
SPR_WIRE_Y_NW = SPR_ELRAIL_BASE + 17,
SPR_WIRE_EW_W = SPR_ELRAIL_BASE + 18,
SPR_WIRE_NS_N = SPR_ELRAIL_BASE + 19,
SPR_WIRE_X_NE_DOWN = SPR_ELRAIL_BASE + 20,
SPR_WIRE_Y_NW_UP = SPR_ELRAIL_BASE + 21,
SPR_WIRE_X_NE_UP = SPR_ELRAIL_BASE + 22,
SPR_WIRE_Y_NW_DOWN = SPR_ELRAIL_BASE + 23,
/* Tunnel entries */
SPR_WIRE_TUNNEL_NE = SPR_ELRAIL_BASE + 24,
SPR_WIRE_TUNNEL_SE = SPR_ELRAIL_BASE + 25,
SPR_WIRE_TUNNEL_SW = SPR_ELRAIL_BASE + 26,
SPR_WIRE_TUNNEL_NW = SPR_ELRAIL_BASE + 27,
/* Depot entries */
SPR_WIRE_DEPOT_SW = SPR_ELRAIL_BASE + 24,
SPR_WIRE_DEPOT_NW = SPR_ELRAIL_BASE + 25,
SPR_WIRE_DEPOT_NE = SPR_ELRAIL_BASE + 26,
SPR_WIRE_DEPOT_SE = SPR_ELRAIL_BASE + 27,
/* Pylons, first identifier is the direction of the track, second the placement relative to the track */
SPR_PYLON_Y_NE = SPR_ELRAIL_BASE + 28,
SPR_PYLON_Y_SW = SPR_ELRAIL_BASE + 29,
SPR_PYLON_X_NW = SPR_ELRAIL_BASE + 30,
SPR_PYLON_X_SE = SPR_ELRAIL_BASE + 31,
SPR_PYLON_EW_N = SPR_ELRAIL_BASE + 32,
SPR_PYLON_EW_S = SPR_ELRAIL_BASE + 33,
SPR_PYLON_NS_W = SPR_ELRAIL_BASE + 34,
SPR_PYLON_NS_E = SPR_ELRAIL_BASE + 35,
/* Base sprites for elrail.
* Offsets via an enum are used so a complete list of absolute
* sprite numbers is unnecessary.
*/
SPR_WIRE_BASE = SPR_ELRAIL_BASE + 0,
SPR_PYLON_BASE = SPR_ELRAIL_BASE + 28,
/* sprites for roads */
SPR_ROAD_PAVED_STRAIGHT_Y = 1313,

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