145 lines
6.2 KiB
C++
145 lines
6.2 KiB
C++
/* $Id$ */
|
|
|
|
/** @file rail.cpp */
|
|
|
|
#include "stdafx.h"
|
|
#include "openttd.h"
|
|
#include "bridge_map.h"
|
|
#include "rail.h"
|
|
#include "station_map.h"
|
|
#include "tunnel_map.h"
|
|
|
|
/* XXX: Below 3 tables store duplicate data. Maybe remove some? */
|
|
/* Maps a trackdir to the bit that stores its status in the map arrays, in the
|
|
* direction along with the trackdir */
|
|
extern const byte _signal_along_trackdir[] = {
|
|
0x8, 0x8, 0x8, 0x2, 0x4, 0x1, 0, 0,
|
|
0x4, 0x4, 0x4, 0x1, 0x8, 0x2
|
|
};
|
|
|
|
/* Maps a trackdir to the bit that stores its status in the map arrays, in the
|
|
* direction against the trackdir */
|
|
extern const byte _signal_against_trackdir[] = {
|
|
0x4, 0x4, 0x4, 0x1, 0x8, 0x2, 0, 0,
|
|
0x8, 0x8, 0x8, 0x2, 0x4, 0x1
|
|
};
|
|
|
|
/* Maps a Track to the bits that store the status of the two signals that can
|
|
* be present on the given track */
|
|
extern const byte _signal_on_track[] = {
|
|
0xC, 0xC, 0xC, 0x3, 0xC, 0x3
|
|
};
|
|
|
|
/* Maps a diagonal direction to the all trackdirs that are connected to any
|
|
* track entering in this direction (including those making 90 degree turns)
|
|
*/
|
|
extern const TrackdirBits _exitdir_reaches_trackdirs[] = {
|
|
TRACKDIR_BIT_X_NE | TRACKDIR_BIT_LOWER_E | TRACKDIR_BIT_LEFT_N, /* DIAGDIR_NE */
|
|
TRACKDIR_BIT_Y_SE | TRACKDIR_BIT_LEFT_S | TRACKDIR_BIT_UPPER_E, /* DIAGDIR_SE */
|
|
TRACKDIR_BIT_X_SW | TRACKDIR_BIT_UPPER_W | TRACKDIR_BIT_RIGHT_S, /* DIAGDIR_SW */
|
|
TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_LOWER_W /* DIAGDIR_NW */
|
|
};
|
|
|
|
extern const Trackdir _next_trackdir[] = {
|
|
TRACKDIR_X_NE, TRACKDIR_Y_SE, TRACKDIR_LOWER_E, TRACKDIR_UPPER_E, TRACKDIR_RIGHT_S, TRACKDIR_LEFT_S, INVALID_TRACKDIR, INVALID_TRACKDIR,
|
|
TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_LOWER_W, TRACKDIR_UPPER_W, TRACKDIR_RIGHT_N, TRACKDIR_LEFT_N
|
|
};
|
|
|
|
/* Maps a trackdir to all trackdirs that make 90 deg turns with it. */
|
|
extern const TrackdirBits _track_crosses_trackdirs[] = {
|
|
TRACKDIR_BIT_Y_SE | TRACKDIR_BIT_Y_NW, /* TRACK_X */
|
|
TRACKDIR_BIT_X_NE | TRACKDIR_BIT_X_SW, /* TRACK_Y */
|
|
TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_RIGHT_S | TRACKDIR_BIT_LEFT_N | TRACKDIR_BIT_LEFT_S, /* TRACK_UPPER */
|
|
TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_RIGHT_S | TRACKDIR_BIT_LEFT_N | TRACKDIR_BIT_LEFT_S, /* TRACK_LOWER */
|
|
TRACKDIR_BIT_UPPER_W | TRACKDIR_BIT_UPPER_E | TRACKDIR_BIT_LOWER_W | TRACKDIR_BIT_LOWER_E, /* TRACK_LEFT */
|
|
TRACKDIR_BIT_UPPER_W | TRACKDIR_BIT_UPPER_E | TRACKDIR_BIT_LOWER_W | TRACKDIR_BIT_LOWER_E /* TRACK_RIGHT */
|
|
};
|
|
|
|
/* Maps a track to all tracks that make 90 deg turns with it. */
|
|
extern const TrackBits _track_crosses_tracks[] = {
|
|
TRACK_BIT_Y, /* TRACK_X */
|
|
TRACK_BIT_X, /* TRACK_Y */
|
|
TRACK_BIT_VERT, /* TRACK_UPPER */
|
|
TRACK_BIT_VERT, /* TRACK_LOWER */
|
|
TRACK_BIT_HORZ, /* TRACK_LEFT */
|
|
TRACK_BIT_HORZ /* TRACK_RIGHT */
|
|
};
|
|
|
|
/* Maps a trackdir to the (4-way) direction the tile is exited when following
|
|
* that trackdir */
|
|
extern const DiagDirection _trackdir_to_exitdir[] = {
|
|
DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_SW, DIAGDIR_SE, DIAGDIR_NE, DIAGDIR_NE,
|
|
DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NE,
|
|
};
|
|
|
|
extern const Trackdir _track_exitdir_to_trackdir[][DIAGDIR_END] = {
|
|
{TRACKDIR_X_NE, INVALID_TRACKDIR, TRACKDIR_X_SW, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, TRACKDIR_Y_SE, INVALID_TRACKDIR, TRACKDIR_Y_NW},
|
|
{TRACKDIR_UPPER_E, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_UPPER_W},
|
|
{INVALID_TRACKDIR, TRACKDIR_LOWER_E, TRACKDIR_LOWER_W, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_LEFT_S, TRACKDIR_LEFT_N},
|
|
{TRACKDIR_RIGHT_N, TRACKDIR_RIGHT_S, INVALID_TRACKDIR, INVALID_TRACKDIR}
|
|
};
|
|
|
|
extern const Trackdir _track_enterdir_to_trackdir[][DIAGDIR_END] = {
|
|
{TRACKDIR_X_NE, INVALID_TRACKDIR, TRACKDIR_X_SW, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, TRACKDIR_Y_SE, INVALID_TRACKDIR, TRACKDIR_Y_NW},
|
|
{INVALID_TRACKDIR, TRACKDIR_UPPER_E, TRACKDIR_UPPER_W, INVALID_TRACKDIR},
|
|
{TRACKDIR_LOWER_E, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_LOWER_W},
|
|
{TRACKDIR_LEFT_N, TRACKDIR_LEFT_S, INVALID_TRACKDIR, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_RIGHT_S, TRACKDIR_RIGHT_N}
|
|
};
|
|
|
|
extern const Trackdir _track_direction_to_trackdir[][DIR_END] = {
|
|
{INVALID_TRACKDIR, TRACKDIR_X_NE, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_X_SW, INVALID_TRACKDIR, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_Y_SE, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_Y_NW},
|
|
{INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_UPPER_E, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_UPPER_W, INVALID_TRACKDIR},
|
|
{INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_LOWER_E, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_LOWER_W, INVALID_TRACKDIR},
|
|
{TRACKDIR_LEFT_N, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_LEFT_S, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR},
|
|
{TRACKDIR_RIGHT_N, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_RIGHT_S, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR}
|
|
};
|
|
|
|
extern const Trackdir _dir_to_diag_trackdir[] = {
|
|
TRACKDIR_X_NE, TRACKDIR_Y_SE, TRACKDIR_X_SW, TRACKDIR_Y_NW,
|
|
};
|
|
|
|
extern const TrackBits _corner_to_trackbits[] = {
|
|
TRACK_BIT_LEFT, TRACK_BIT_LOWER, TRACK_BIT_RIGHT, TRACK_BIT_UPPER,
|
|
};
|
|
|
|
/* The default multiplier for the cost of building different types of railway
|
|
* track, which will be divided by 8. Can be changed by newgrf files. */
|
|
const int _default_railtype_cost_multiplier[RAILTYPE_END] = {
|
|
8, 12, 16, 24,
|
|
};
|
|
int _railtype_cost_multiplier[RAILTYPE_END];
|
|
|
|
RailType GetTileRailType(TileIndex tile)
|
|
{
|
|
switch (GetTileType(tile)) {
|
|
case MP_RAILWAY:
|
|
return GetRailType(tile);
|
|
|
|
case MP_ROAD:
|
|
/* rail/road crossing */
|
|
if (IsLevelCrossing(tile)) return GetRailType(tile);
|
|
break;
|
|
|
|
case MP_STATION:
|
|
if (IsRailwayStationTile(tile)) return GetRailType(tile);
|
|
break;
|
|
|
|
case MP_TUNNELBRIDGE:
|
|
if (IsTunnel(tile)) {
|
|
if (GetTunnelTransportType(tile) == TRANSPORT_RAIL) return GetRailType(tile);
|
|
} else {
|
|
if (GetBridgeTransportType(tile) == TRANSPORT_RAIL) return GetRailType(tile);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return INVALID_RAILTYPE;
|
|
}
|