Stores all the data for overhead wire and pylon drawing. More...

Data Structures
struct	SortableSpriteStruct

Macros
#define	PCP_NOT_ON_TRACK 0xFF

#define	NUM_IGNORE_GROUPS 3

#define	IGNORE_NONE 0xFF

Enumerations
enum	TLG { XEVEN_YEVEN = 0 , XEVEN_YODD = 1 , XODD_YEVEN = 2 , XODD_YODD = 3 , TLG_END }
	Tile Location group. More...

enum	TileSource { TS_HOME = 0 , TS_NEIGHBOUR = 1 , TS_END }
	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.

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 }
	Offset for pylon sprites from the base pylon 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_SW , WSO_ENTRANCE_NW , WSO_ENTRANCE_NE , WSO_ENTRANCE_SE }
	Offset for wire sprites from the base wire sprite.

enum	RailCatenarySprite { 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 }
	Refers to a certain element of the catenary. More...

Variables
static const uint	NUM_TRACKS_AT_PCP = 6

static const uint8_t	AllowedPPPonPCP [DIAGDIR_END]
	Which PPPs are possible at all on a given PCP. More...

static const uint8_t	OwnedPPPonPCP [DIAGDIR_END]
	Which of the PPPs are inside the tile. More...

static const DiagDirection	PCPpositions [TRACK_END][2]
	Maps a track bit onto two PCP positions. More...

static const uint8_t	PreferredPPPofTrackAtPCP [TRACK_END][DIAGDIR_END]
	Preferred points of each trackbit. More...

static const uint8_t	IgnoredPCP [NUM_IGNORE_GROUPS][TLG_END][DIAGDIR_END]
	In case we have a straight line, we place pylon only every two tiles, so there are certain tiles which we ignore. More...

static const uint8_t	DisallowedPPPofTrackAtPCP [TRACK_END][DIAGDIR_END]
	Which pylons can definitely NOT be built. More...

static const Track	TracksAtPCP [DIAGDIR_END][NUM_TRACKS_AT_PCP]

static const TileSource	TrackSourceTile [DIAGDIR_END][NUM_TRACKS_AT_PCP]

static const Direction	PPPorder [DIAGDIR_END][TLG_END][DIR_END]

static const int8_t	x_pcp_offsets [DIAGDIR_END] = {0, 8, 16, 8}

static const int8_t	y_pcp_offsets [DIAGDIR_END] = {8, 16, 8, 0}

static const int8_t	x_ppp_offsets [DIR_END] = {-2, -4, -2, 0, 2, 4, 2, 0}

static const int8_t	y_ppp_offsets [DIR_END] = {-2, 0, 2, 4, 2, 0, -2, -4}

static const uint8_t	pylon_sprites []

static const uint	ELRAIL_ELEVATION = 10
	Distance between wire and rail.

static const uint	ELRAIL_ELEVRAISE = ELRAIL_ELEVATION + TILE_HEIGHT + 1
	Wires that a draw one level higher than the north corner.

static const uint	ELRAIL_ELEVLOWER = ELRAIL_ELEVATION - 1
	Wires that a draw one level lower than the north corner.

static const SortableSpriteStruct	RailCatenarySpriteData []

static const SortableSpriteStruct	RailCatenarySpriteData_Depot []

static const SortableSpriteStruct	RailCatenarySpriteData_Tunnel []

static const RailCatenarySprite	Wires [5][TRACK_END][4]

Detailed Description

Stores all the data for overhead wire and pylon drawing.

See also: elrail.c

Definition in file elrail_data.h.

Enumeration Type Documentation

◆ RailCatenarySprite

enum RailCatenarySprite

Refers to a certain element of the catenary.

Identifiers for Wires:

Direction of the wire
Slope of the tile for diagonals, placement inside the track for horiz/vertical pieces
Place where a pylon should be

Identifiers for Pylons:

Direction of the wire
Slope of the tile
Position of the Pylon relative to the track
Position of the Pylon inside the tile

Definition at line 422 of file elrail_data.h.

◆ TLG

enum TLG

Tile Location group.

This defines whether the X and or Y coordinate of a tile is even

Definition at line 20 of file elrail_data.h.

Variable Documentation

◆ AllowedPPPonPCP

const uint8_t AllowedPPPonPCP[DIAGDIR_END]

static

Initial value:

= {
  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 PPPs are possible at all on a given PCP.

Definition at line 43 of file elrail_data.h.

◆ DisallowedPPPofTrackAtPCP

const uint8_t DisallowedPPPofTrackAtPCP[TRACK_END][DIAGDIR_END]

static

Initial value:

= {
  {1 << DIR_SW | 1 << DIR_NE, 0,           1 << DIR_SW | 1 << DIR_NE, 0          }, 
  {0,           1 << DIR_NW | 1 << DIR_SE, 0,           1 << DIR_NW | 1 << DIR_SE}, 
  {1 << DIR_W | 1 << DIR_E,  0,           0,           1 << DIR_W | 1 << DIR_E }, 
  {0,           1 << DIR_W | 1 << DIR_E,  1 << DIR_W | 1 << DIR_E,  0          }, 
  {0,           0,           1 << DIR_S | 1 << DIR_N,  1 << DIR_N | 1 << DIR_S }, 
  {1 << DIR_S | 1 << DIR_N,  1 << DIR_S | 1 << DIR_N,  0,           0,         }, 
}

Which pylons can definitely NOT be built.

Definition at line 197 of file elrail_data.h.

◆ IgnoredPCP

const uint8_t IgnoredPCP[NUM_IGNORE_GROUPS][TLG_END][DIAGDIR_END]

static

In case we have a straight 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.

Definition at line 122 of file elrail_data.h.

◆ OwnedPPPonPCP

const uint8_t OwnedPPPonPCP[DIAGDIR_END]

static

Initial value:

= {
  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
}

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.

Definition at line 55 of file elrail_data.h.

◆ PCPpositions

const DiagDirection PCPpositions[TRACK_END][2]

static

Initial value:

= {
  {DIAGDIR_NE, DIAGDIR_SW}, 
  {DIAGDIR_SE, DIAGDIR_NW}, 
  {DIAGDIR_NW, DIAGDIR_NE}, 
  {DIAGDIR_SE, DIAGDIR_SW}, 
  {DIAGDIR_SW, DIAGDIR_NW}, 
  {DIAGDIR_NE, DIAGDIR_SE}, 
}

Maps a track bit onto two PCP positions.

Definition at line 63 of file elrail_data.h.

◆ PPPorder

const Direction PPPorder[DIAGDIR_END][TLG_END][DIR_END]

static

Initial value:

= {    
  {   
    {DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_N, DIR_E, DIR_S, DIR_W}, 
    {DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_S, DIR_W, DIR_N, DIR_E}, 
    {DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_S, DIR_W, DIR_N, DIR_E}, 
    {DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_N, DIR_E, DIR_S, DIR_W}, 
  }, {
    {DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_S, DIR_E, DIR_N, DIR_W}, 
    {DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_N, DIR_W, DIR_S, DIR_E}, 
    {DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_N, DIR_W, DIR_S, DIR_E}, 
    {DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_S, DIR_E, DIR_N, DIR_W}, 
  }, {
    {DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_S, DIR_W, DIR_N, DIR_E}, 
    {DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_N, DIR_E, DIR_S, DIR_W}, 
    {DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_N, DIR_E, DIR_S, DIR_W}, 
    {DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_S, DIR_W, DIR_N, DIR_E}, 
  }, {
    {DIR_NE, DIR_NW, DIR_SE, DIR_SW, DIR_N, DIR_W, DIR_S, DIR_E}, 
    {DIR_NE, DIR_SE, DIR_SW, DIR_NW, DIR_S, DIR_E, DIR_N, DIR_W}, 
    {DIR_SW, DIR_NW, DIR_NE, DIR_SE, DIR_S, DIR_E, DIR_N, DIR_W}, 
    {DIR_SW, DIR_SE, DIR_NE, DIR_NW, DIR_N, DIR_W, DIR_S, DIR_E}, 
  }
}

Definition at line 224 of file elrail_data.h.

◆ PreferredPPPofTrackAtPCP

const uint8_t PreferredPPPofTrackAtPCP[TRACK_END][DIAGDIR_END]

static

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 also: PCPpositions

Definition at line 79 of file elrail_data.h.

◆ pylon_sprites

const uint8_t pylon_sprites[]

static

Initial value:

= {
  PSO_EW_N,
  PSO_Y_NE,
  PSO_NS_E,
  PSO_X_SE,
  PSO_EW_S,
  PSO_Y_SW,
  PSO_NS_W,
  PSO_X_NW,
}

Definition at line 269 of file elrail_data.h.

◆ RailCatenarySpriteData_Depot

const SortableSpriteStruct RailCatenarySpriteData_Depot[]

static

Initial value:

= {
  { WSO_ENTRANCE_NE,   0,  7, 15,  1,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_SE,   7,  0,  1, 15,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_SW,   0,  7, 15,  1,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_NW,   7,  0,  1, 15,  1, ELRAIL_ELEVATION }  
}

Definition at line 395 of file elrail_data.h.

◆ RailCatenarySpriteData_Tunnel

const SortableSpriteStruct RailCatenarySpriteData_Tunnel[]

static

Initial value:

= {
  { WSO_ENTRANCE_SW,   0,  7, 15,  1,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_NW,   7,  0,  1, 15,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_NE,   0,  7, 15,  1,  1, ELRAIL_ELEVATION }, 
  { WSO_ENTRANCE_SE,   7,  0,  1, 15,  1, ELRAIL_ELEVATION }  
}

Definition at line 402 of file elrail_data.h.

◆ TracksAtPCP

const Track TracksAtPCP[DIAGDIR_END][NUM_TRACKS_AT_PCP]

static

Initial value:

= {
  {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},
}

Definition at line 207 of file elrail_data.h.

◆ TrackSourceTile

const TileSource TrackSourceTile[DIAGDIR_END][NUM_TRACKS_AT_PCP]

static

Initial value:

= {
  {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},
}

Definition at line 216 of file elrail_data.h.

Data Structures

Macros

Enumerations

Variables

Detailed Description

Enumeration Type Documentation

◆ RailCatenarySprite

◆ TLG

Variable Documentation

◆ AllowedPPPonPCP

◆ DisallowedPPPofTrackAtPCP

◆ IgnoredPCP

◆ OwnedPPPonPCP

◆ PCPpositions

◆ PPPorder

◆ PreferredPPPofTrackAtPCP

◆ pylon_sprites

◆ RailCatenarySpriteData_Depot

◆ RailCatenarySpriteData_Tunnel

◆ TracksAtPCP

◆ TrackSourceTile