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@ r2072:93fbc12acd5b
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Location: cpp/openttd-patchpack/source/rail.c
r2072:93fbc12acd5b
6.7 KiB
text/x-c
(svn r2582) Fix: Prevent generating unrealistically many Oil refineries on large maps. They are always placed next to the borderline, so the perimeter is used instead of area to scale the number of those industries.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | #include "stdafx.h"
#include "openttd.h"
#include "rail.h"
#include "station.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 */
const byte _signal_along_trackdir[] = {
0x80, 0x80, 0x80, 0x20, 0x40, 0x10, 0, 0,
0x40, 0x40, 0x40, 0x10, 0x80, 0x20
};
/* Maps a trackdir to the bit that stores its status in the map arrays, in the
* direction against the trackdir */
const byte _signal_against_trackdir[] = {
0x40, 0x40, 0x40, 0x10, 0x80, 0x20, 0, 0,
0x80, 0x80, 0x80, 0x20, 0x40, 0x10
};
/* Maps a Track to the bits that store the status of the two signals that can
* be present on the given track */
const byte _signal_on_track[] = {
0xC0, 0xC0, 0xC0, 0x30, 0xC0, 0x30
};
/* Maps a diagonal direction to the all trackdirs that are connected to any
* track entering in this direction (including those making 90 degree turns)
*/
const TrackdirBits _exitdir_reaches_trackdirs[] = {
TRACKDIR_BIT_DIAG1_NE | TRACKDIR_BIT_LOWER_E | TRACKDIR_BIT_LEFT_N, /* DIAGDIR_NE */
TRACKDIR_BIT_DIAG2_SE | TRACKDIR_BIT_LEFT_S | TRACKDIR_BIT_UPPER_E, /* DIAGDIR_SE */
TRACKDIR_BIT_DIAG1_SW | TRACKDIR_BIT_UPPER_W | TRACKDIR_BIT_RIGHT_S, /* DIAGDIR_SW */
TRACKDIR_BIT_DIAG2_NW | TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_LOWER_W /* DIAGDIR_NW */
};
const Trackdir _next_trackdir[] = {
TRACKDIR_DIAG1_NE, TRACKDIR_DIAG2_SE, TRACKDIR_LOWER_E, TRACKDIR_UPPER_E, TRACKDIR_RIGHT_S, TRACKDIR_LEFT_S, INVALID_TRACKDIR, INVALID_TRACKDIR,
TRACKDIR_DIAG1_SW, TRACKDIR_DIAG2_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. */
const TrackdirBits _track_crosses_trackdirs[] = {
TRACKDIR_BIT_DIAG2_SE | TRACKDIR_BIT_DIAG2_NW, /* TRACK_DIAG1 */
TRACKDIR_BIT_DIAG1_NE | TRACKDIR_BIT_DIAG1_SW, /* TRACK_DIAG2 */
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. */
const TrackBits _track_crosses_tracks[] = {
TRACK_BIT_DIAG2, /* TRACK_DIAG1 */
TRACK_BIT_DIAG1, /* TRACK_DIAG2 */
TRACK_BIT_LEFT | TRACK_BIT_RIGHT, /* TRACK_UPPER */
TRACK_BIT_LEFT | TRACK_BIT_RIGHT, /* TRACK_LOWER */
TRACK_BIT_UPPER | TRACK_BIT_LOWER, /* TRACK_LEFT */
TRACK_BIT_UPPER | TRACK_BIT_LOWER /* TRACK_RIGHT */
};
/* Maps a trackdir to the (4-way) direction the tile is exited when following
* that trackdir */
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,
};
const Trackdir _track_exitdir_to_trackdir[][DIAGDIR_END] = {
{TRACKDIR_DIAG1_NE, INVALID_TRACKDIR, TRACKDIR_DIAG1_SW, INVALID_TRACKDIR},
{INVALID_TRACKDIR, TRACKDIR_DIAG2_SE, INVALID_TRACKDIR, TRACKDIR_DIAG2_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}
};
const Trackdir _track_enterdir_to_trackdir[][DIAGDIR_END] = { // TODO: replace magic with enums
{TRACKDIR_DIAG1_NE, INVALID_TRACKDIR, TRACKDIR_DIAG1_SW, INVALID_TRACKDIR},
{INVALID_TRACKDIR, TRACKDIR_DIAG2_SE, INVALID_TRACKDIR, TRACKDIR_DIAG2_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}
};
const Trackdir _track_direction_to_trackdir[][DIR_END] = {
{INVALID_TRACKDIR, TRACKDIR_DIAG1_NE, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_DIAG1_SW, INVALID_TRACKDIR, INVALID_TRACKDIR},
{INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_DIAG2_SE, INVALID_TRACKDIR, INVALID_TRACKDIR, INVALID_TRACKDIR, TRACKDIR_DIAG2_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}
};
const Trackdir _dir_to_diag_trackdir[] = {
TRACKDIR_DIAG1_NE, TRACKDIR_DIAG2_SE, TRACKDIR_DIAG1_SW, TRACKDIR_DIAG2_NW,
};
const DiagDirection _reverse_diagdir[] = {
DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NE, DIAGDIR_SE
};
const Trackdir _reverse_trackdir[] = {
TRACKDIR_DIAG1_SW, TRACKDIR_DIAG2_NW, TRACKDIR_UPPER_W, TRACKDIR_LOWER_W, TRACKDIR_LEFT_N, TRACKDIR_RIGHT_N, INVALID_TRACKDIR, INVALID_TRACKDIR,
TRACKDIR_DIAG1_NE, TRACKDIR_DIAG2_SE, TRACKDIR_UPPER_E, TRACKDIR_LOWER_E, TRACKDIR_LEFT_S, TRACKDIR_RIGHT_S
};
RailType GetTileRailType(TileIndex tile, Trackdir trackdir)
{
RailType type = INVALID_RAILTYPE;
DiagDirection exitdir = TrackdirToExitdir(trackdir);
switch (GetTileType(tile)) {
case MP_RAILWAY:
/* railway track */
type = _m[tile].m3 & RAILTYPE_MASK;
break;
case MP_STREET:
/* rail/road crossing */
if (IsLevelCrossing(tile))
type = _m[tile].m4 & RAILTYPE_MASK;
break;
case MP_STATION:
if (IsTrainStationTile(tile))
type = _m[tile].m3 & RAILTYPE_MASK;
break;
case MP_TUNNELBRIDGE:
/* railway tunnel */
if ((_m[tile].m5 & 0xFC) == 0) type = _m[tile].m3 & RAILTYPE_MASK;
/* railway bridge ending */
if ((_m[tile].m5 & 0xC6) == 0x80) type = _m[tile].m3 & RAILTYPE_MASK;
/* on railway bridge */
if ((_m[tile].m5 & 0xC6) == 0xC0 && ((DiagDirection)(_m[tile].m5 & 0x1)) == (exitdir & 0x1))
type = (_m[tile].m3 >> 4) & RAILTYPE_MASK;
/* under bridge (any type) */
if ((_m[tile].m5 & 0xC0) == 0xC0 && ((uint)_m[tile].m5 & 0x1) != (exitdir & 0x1))
type = _m[tile].m3 & RAILTYPE_MASK;
break;
default:
break;
}
return type;
}
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