Files
@ r6935:a7744b917c21
Branch filter:
Location: cpp/openttd-patchpack/source/src/rail_cmd.cpp
r6935:a7744b917c21
62.7 KiB
text/x-c
(svn r10188) -Codechange: make it a little easier to load a savegame from the console:
-g <absolute path>
-g <relative path from current working directory>
-g <relative path from within the savegame directory>
-g <absolute path>
-g <relative path from current working directory>
-g <relative path from within the savegame directory>
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 | /* $Id$ */
/** @file rail_cmd.cpp */
#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "bridge.h"
#include "cmd_helper.h"
#include "debug.h"
#include "functions.h"
#include "rail_map.h"
#include "road_map.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "map.h"
#include "landscape.h"
#include "tile.h"
#include "town_map.h"
#include "tunnel_map.h"
#include "vehicle.h"
#include "viewport.h"
#include "command.h"
#include "pathfind.h"
#include "engine.h"
#include "town.h"
#include "sound.h"
#include "station.h"
#include "sprite.h"
#include "depot.h"
#include "waypoint.h"
#include "window.h"
#include "rail.h"
#include "railtypes.h" // include table for railtypes
#include "newgrf.h"
#include "yapf/yapf.h"
#include "newgrf_callbacks.h"
#include "newgrf_station.h"
#include "train.h"
const byte _track_sloped_sprites[14] = {
14, 15, 22, 13,
0, 21, 17, 12,
23, 0, 18, 20,
19, 16
};
/* 4
* ---------
* |\ /|
* | \ 1/ |
* | \ / |
* | \ / |
* 16| \ |32
* | / \2 |
* | / \ |
* | / \ |
* |/ \|
* ---------
* 8
*/
/* MAP2 byte: abcd???? => Signal On? Same coding as map3lo
* MAP3LO byte: abcd???? => Signal Exists?
* a and b are for diagonals, upper and left,
* one for each direction. (ie a == NE->SW, b ==
* SW->NE, or v.v., I don't know. b and c are
* similar for lower and right.
* MAP2 byte: ????abcd => Type of ground.
* MAP3LO byte: ????abcd => Type of rail.
* MAP5: 00abcdef => rail
* 01abcdef => rail w/ signals
* 10uuuuuu => unused
* 11uuuudd => rail depot
*/
static bool CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags)
{
TrackBits current; // The current track layout
TrackBits future; // The track layout we want to build
_error_message = STR_1001_IMPOSSIBLE_TRACK_COMBINATION;
if (!IsPlainRailTile(tile)) return false;
/* So, we have a tile with tracks on it (and possibly signals). Let's see
* what tracks first */
current = GetTrackBits(tile);
future = current | to_build;
/* Are we really building something new? */
if (current == future) {
/* Nothing new is being built */
_error_message = STR_1007_ALREADY_BUILT;
return false;
}
/* Let's see if we may build this */
if (flags & DC_NO_RAIL_OVERLAP || HasSignals(tile)) {
/* If we are not allowed to overlap (flag is on for ai players or we have
* signals on the tile), check that */
return future == TRACK_BIT_HORZ || future == TRACK_BIT_VERT;
} else {
/* Normally, we may overlap and any combination is valid */
return true;
}
}
static const TrackBits _valid_tileh_slopes[][15] = {
/* set of normal ones */
{
TRACK_BIT_ALL,
TRACK_BIT_RIGHT,
TRACK_BIT_UPPER,
TRACK_BIT_X,
TRACK_BIT_LEFT,
TRACK_BIT_NONE,
TRACK_BIT_Y,
TRACK_BIT_LOWER,
TRACK_BIT_LOWER,
TRACK_BIT_Y,
TRACK_BIT_NONE,
TRACK_BIT_LEFT,
TRACK_BIT_X,
TRACK_BIT_UPPER,
TRACK_BIT_RIGHT,
},
/* allowed rail for an evenly raised platform */
{
TRACK_BIT_NONE,
TRACK_BIT_LEFT,
TRACK_BIT_LOWER,
TRACK_BIT_Y | TRACK_BIT_LOWER | TRACK_BIT_LEFT,
TRACK_BIT_RIGHT,
TRACK_BIT_ALL,
TRACK_BIT_X | TRACK_BIT_LOWER | TRACK_BIT_RIGHT,
TRACK_BIT_ALL,
TRACK_BIT_UPPER,
TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_LEFT,
TRACK_BIT_ALL,
TRACK_BIT_ALL,
TRACK_BIT_Y | TRACK_BIT_UPPER | TRACK_BIT_RIGHT,
TRACK_BIT_ALL,
TRACK_BIT_ALL
}
};
uint GetRailFoundation(Slope tileh, TrackBits bits)
{
uint i;
if (!IsSteepSlope(tileh)) {
if ((~_valid_tileh_slopes[0][tileh] & bits) == 0) return 0;
if ((~_valid_tileh_slopes[1][tileh] & bits) == 0) return tileh;
}
switch (bits) {
default: NOT_REACHED();
case TRACK_BIT_X: i = 0; break;
case TRACK_BIT_Y: i = 1; break;
case TRACK_BIT_LEFT: return 15 + 8 + (tileh == SLOPE_STEEP_W ? 4 : 0);
case TRACK_BIT_LOWER: return 15 + 8 + (tileh == SLOPE_STEEP_S ? 5 : 1);
case TRACK_BIT_RIGHT: return 15 + 8 + (tileh == SLOPE_STEEP_E ? 6 : 2);
case TRACK_BIT_UPPER: return 15 + 8 + (tileh == SLOPE_STEEP_N ? 7 : 3);
}
switch (tileh) {
case SLOPE_W:
case SLOPE_STEEP_W: i += 0; break;
case SLOPE_S:
case SLOPE_STEEP_S: i += 2; break;
case SLOPE_E:
case SLOPE_STEEP_E: i += 4; break;
case SLOPE_N:
case SLOPE_STEEP_N: i += 6; break;
default: return 0;
}
return i + 15;
}
static uint32 CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile)
{
if (IsSteepSlope(tileh)) {
if (_patches.build_on_slopes && existing == 0) {
TrackBits valid = TRACK_BIT_CROSS | (HASBIT(1 << SLOPE_STEEP_W | 1 << SLOPE_STEEP_E, tileh) ? TRACK_BIT_VERT : TRACK_BIT_HORZ);
if (valid & rail_bits) return _price.terraform;
}
} else {
rail_bits |= existing;
/* don't allow building on the lower side of a coast */
if (IsTileType(tile, MP_WATER) &&
~_valid_tileh_slopes[1][tileh] & rail_bits) {
return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);
}
/* no special foundation */
if ((~_valid_tileh_slopes[0][tileh] & rail_bits) == 0) {
return 0;
} else if (!_patches.build_on_slopes || _is_old_ai_player) {
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
}
if ((~_valid_tileh_slopes[1][tileh] & rail_bits) == 0 || ( // whole tile is leveled up
(rail_bits == TRACK_BIT_X || rail_bits == TRACK_BIT_Y) &&
(tileh == SLOPE_W || tileh == SLOPE_S || tileh == SLOPE_E || tileh == SLOPE_N)
)) { // partly up
return (existing != 0) ? 0 : _price.terraform;
}
}
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
}
/* Validate functions for rail building */
static inline bool ValParamTrackOrientation(Track track) {return IsValidTrack(track);}
/** Build a single piece of rail
* @param tile tile to build on
* @param flags operation to perform
* @param p1 railtype of being built piece (normal, mono, maglev)
* @param p2 rail track to build
*/
int32 CmdBuildSingleRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
Slope tileh;
RailType railtype;
Track track;
TrackBits trackbit;
int32 cost = 0;
int32 ret;
if (!ValParamRailtype(p1) || !ValParamTrackOrientation((Track)p2)) return CMD_ERROR;
railtype = (RailType)p1;
track = (Track)p2;
tileh = GetTileSlope(tile, NULL);
trackbit = TrackToTrackBits(track);
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
switch (GetTileType(tile)) {
case MP_RAILWAY:
if (!CheckTrackCombination(tile, trackbit, flags) ||
!EnsureNoVehicleOnGround(tile)) {
return CMD_ERROR;
}
if (!IsTileOwner(tile, _current_player) ||
!IsCompatibleRail(GetRailType(tile), railtype)) {
/* Get detailed error message */
return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
}
ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile);
if (CmdFailed(ret)) return ret;
cost += ret;
/* If the rail types don't match, try to convert only if engines of
* the present rail type are powered on the new rail type. */
if (GetRailType(tile) != railtype && HasPowerOnRail(GetRailType(tile), railtype)) {
ret = DoCommand(tile, tile, railtype, flags, CMD_CONVERT_RAIL);
if (CmdFailed(ret)) return ret;
cost += ret;
}
if (flags & DC_EXEC) {
SetRailGroundType(tile, RAIL_GROUND_BARREN);
SetTrackBits(tile, GetTrackBits(tile) | trackbit);
}
break;
case MP_STREET:
#define M(x) (1 << (x))
/* Level crossings may only be built on these slopes */
if (!HASBIT(M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT), tileh)) {
return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
}
#undef M
if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) {
if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
RoadTypes roadtypes = GetRoadTypes(tile);
RoadBits road = GetRoadBits(tile, ROADTYPE_ROAD);
RoadBits tram = GetRoadBits(tile, ROADTYPE_TRAM);
switch (roadtypes) {
default: break;
case ROADTYPES_TRAM:
/* Tram crossings must always have road. */
SetRoadOwner(tile, ROADTYPE_ROAD, _current_player);
roadtypes |= ROADTYPES_ROAD;
break;
case ROADTYPES_ROADTRAM: if (road == tram) break;
/* FALL THROUGH */
case ROADTYPES_ROADHWAY: // Road and highway are incompatible in this case
case ROADTYPES_TRAMHWAY: // Tram and highway are incompatible in this case
case ROADTYPES_ALL: // Also incompatible
return CMD_ERROR;
}
road |= tram | GetRoadBits(tile, ROADTYPE_HWAY);
if ((track == TRACK_X && road == ROAD_Y) ||
(track == TRACK_Y && road == ROAD_X)) {
if (flags & DC_EXEC) {
MakeRoadCrossing(tile, GetRoadOwner(tile, ROADTYPE_ROAD), GetRoadOwner(tile, ROADTYPE_TRAM), GetRoadOwner(tile, ROADTYPE_HWAY), _current_player, (track == TRACK_X ? AXIS_Y : AXIS_X), railtype, roadtypes, GetTownIndex(tile));
}
break;
}
}
if (IsLevelCrossing(tile) && GetCrossingRailBits(tile) == trackbit) {
return_cmd_error(STR_1007_ALREADY_BUILT);
}
/* FALLTHROUGH */
default:
ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile);
if (CmdFailed(ret)) return ret;
cost += ret;
ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(ret)) return ret;
cost += ret;
if (flags & DC_EXEC) MakeRailNormal(tile, _current_player, trackbit, railtype);
break;
}
if (flags & DC_EXEC) {
MarkTileDirtyByTile(tile);
SetSignalsOnBothDir(tile, track);
YapfNotifyTrackLayoutChange(tile, track);
}
return cost + _price.build_rail;
}
/** Remove a single piece of track
* @param tile tile to remove track from
* @param flags operation to perform
* @param p1 unused
* @param p2 rail orientation
*/
int32 CmdRemoveSingleRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
Track track = (Track)p2;
TrackBits trackbit;
int32 cost = _price.remove_rail;
bool crossing = false;
if (!ValParamTrackOrientation((Track)p2)) return CMD_ERROR;
trackbit = TrackToTrackBits(track);
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
switch (GetTileType(tile)) {
case MP_STREET: {
if (!IsLevelCrossing(tile) ||
GetCrossingRailBits(tile) != trackbit ||
(_current_player != OWNER_WATER && !CheckTileOwnership(tile)) ||
!EnsureNoVehicleOnGround(tile)) {
return CMD_ERROR;
}
if (flags & DC_EXEC) {
MakeRoadNormal(tile, GetCrossingRoadBits(tile), GetRoadTypes(tile), GetTownIndex(tile), GetRoadOwner(tile, ROADTYPE_ROAD), GetRoadOwner(tile, ROADTYPE_TRAM), GetRoadOwner(tile, ROADTYPE_HWAY));
}
break;
}
case MP_RAILWAY: {
TrackBits present;
if (!IsPlainRailTile(tile) ||
(_current_player != OWNER_WATER && !CheckTileOwnership(tile)) ||
!EnsureNoVehicleOnGround(tile)) {
return CMD_ERROR;
}
present = GetTrackBits(tile);
if ((present & trackbit) == 0) return CMD_ERROR;
if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true;
/* Charge extra to remove signals on the track, if they are there */
if (HasSignalOnTrack(tile, track))
cost += DoCommand(tile, track, 0, flags, CMD_REMOVE_SIGNALS);
if (flags & DC_EXEC) {
present ^= trackbit;
if (present == 0) {
DoClearSquare(tile);
} else {
SetTrackBits(tile, present);
}
}
break;
}
default: return CMD_ERROR;
}
if (flags & DC_EXEC) {
MarkTileDirtyByTile(tile);
if (crossing) {
/* crossing is set when only TRACK_BIT_X and TRACK_BIT_Y are set. As we
* are removing one of these pieces, we'll need to update signals for
* both directions explicitly, as after the track is removed it won't
* 'connect' with the other piece. */
SetSignalsOnBothDir(tile, TRACK_X);
SetSignalsOnBothDir(tile, TRACK_Y);
YapfNotifyTrackLayoutChange(tile, TRACK_X);
YapfNotifyTrackLayoutChange(tile, TRACK_Y);
} else {
SetSignalsOnBothDir(tile, track);
YapfNotifyTrackLayoutChange(tile, track);
}
}
return cost;
}
static const TileIndexDiffC _trackdelta[] = {
{ -1, 0 }, { 0, 1 }, { -1, 0 }, { 0, 1 }, { 1, 0 }, { 0, 1 },
{ 0, 0 },
{ 0, 0 },
{ 1, 0 }, { 0, -1 }, { 0, -1 }, { 1, 0 }, { 0, -1 }, { -1, 0 },
{ 0, 0 },
{ 0, 0 }
};
static int32 ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileIndex end)
{
int x = TileX(start);
int y = TileY(start);
int ex = TileX(end);
int ey = TileY(end);
int dx, dy, trdx, trdy;
if (!ValParamTrackOrientation(TrackdirToTrack(*trackdir))) return CMD_ERROR;
/* calculate delta x,y from start to end tile */
dx = ex - x;
dy = ey - y;
/* calculate delta x,y for the first direction */
trdx = _trackdelta[*trackdir].x;
trdy = _trackdelta[*trackdir].y;
if (!IsDiagonalTrackdir(*trackdir)) {
trdx += _trackdelta[*trackdir ^ 1].x;
trdy += _trackdelta[*trackdir ^ 1].y;
}
/* validate the direction */
while (
(trdx <= 0 && dx > 0) ||
(trdx >= 0 && dx < 0) ||
(trdy <= 0 && dy > 0) ||
(trdy >= 0 && dy < 0)
) {
if (!HASBIT(*trackdir, 3)) { // first direction is invalid, try the other
SetBitT(*trackdir, 3); // reverse the direction
trdx = -trdx;
trdy = -trdy;
} else { // other direction is invalid too, invalid drag
return CMD_ERROR;
}
}
/* (for diagonal tracks, this is already made sure of by above test), but:
* for non-diagonal tracks, check if the start and end tile are on 1 line */
if (!IsDiagonalTrackdir(*trackdir)) {
trdx = _trackdelta[*trackdir].x;
trdy = _trackdelta[*trackdir].y;
if (abs(dx) != abs(dy) && abs(dx) + abs(trdy) != abs(dy) + abs(trdx))
return CMD_ERROR;
}
return 0;
}
/** Build a stretch of railroad tracks.
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0-3) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev)
* - p2 = (bit 4-6) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 7) - 0 = build, 1 = remove tracks
*/
static int32 CmdRailTrackHelper(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
int32 ret, total_cost = 0;
Track track = (Track)GB(p2, 4, 3);
Trackdir trackdir;
byte mode = HASBIT(p2, 7);
RailType railtype = (RailType)GB(p2, 0, 4);
TileIndex end_tile;
if (!ValParamRailtype(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR;
if (p1 >= MapSize()) return CMD_ERROR;
end_tile = p1;
trackdir = TrackToTrackdir(track);
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (CmdFailed(ValidateAutoDrag(&trackdir, tile, end_tile))) return CMD_ERROR;
if (flags & DC_EXEC) SndPlayTileFx(SND_20_SPLAT_2, tile);
for (;;) {
ret = DoCommand(tile, railtype, TrackdirToTrack(trackdir), flags, (mode == 0) ? CMD_BUILD_SINGLE_RAIL : CMD_REMOVE_SINGLE_RAIL);
if (CmdFailed(ret)) {
if ((_error_message != STR_1007_ALREADY_BUILT) && (mode == 0)) break;
_error_message = INVALID_STRING_ID;
} else {
total_cost += ret;
}
if (tile == end_tile) break;
tile += ToTileIndexDiff(_trackdelta[trackdir]);
/* toggle railbit for the non-diagonal tracks */
if (!IsDiagonalTrackdir(trackdir)) ToggleBitT(trackdir, 0);
}
return (total_cost == 0) ? CMD_ERROR : total_cost;
}
/** Build rail on a stretch of track.
* Stub for the unified rail builder/remover
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0-3) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev)
* - p2 = (bit 4-6) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 7) - 0 = build, 1 = remove tracks
* @see CmdRailTrackHelper
*/
int32 CmdBuildRailroadTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
return CmdRailTrackHelper(tile, flags, p1, CLRBIT(p2, 7));
}
/** Build rail on a stretch of track.
* Stub for the unified rail builder/remover
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0-3) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev)
* - p2 = (bit 4-6) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 7) - 0 = build, 1 = remove tracks
* @see CmdRailTrackHelper
*/
int32 CmdRemoveRailroadTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
return CmdRailTrackHelper(tile, flags, p1, SETBIT(p2, 7));
}
/** Build a train depot
* @param tile position of the train depot
* @param flags operation to perform
* @param p1 rail type
* @param p2 bit 0..1 entrance direction (DiagDirection)
*
* @todo When checking for the tile slope,
* distingush between "Flat land required" and "land sloped in wrong direction"
*/
int32 CmdBuildTrainDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
Depot *d;
int32 cost, ret;
Slope tileh;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* check railtype and valid direction for depot (0 through 3), 4 in total */
if (!ValParamRailtype(p1)) return CMD_ERROR;
tileh = GetTileSlope(tile, NULL);
DiagDirection dir = Extract<DiagDirection, 0>(p2);
/* Prohibit construction if
* The tile is non-flat AND
* 1) The AI is "old-school"
* 2) build-on-slopes is disabled
* 3) the tile is steep i.e. spans two height levels
* 4) the exit points in the wrong direction
*/
if (tileh != SLOPE_FLAT && (
_is_old_ai_player ||
!_patches.build_on_slopes ||
IsSteepSlope(tileh) ||
!CanBuildDepotByTileh(dir, tileh)
)) {
return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
}
ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(ret)) return CMD_ERROR;
cost = ret;
if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
d = AllocateDepot();
if (d == NULL) return CMD_ERROR;
if (flags & DC_EXEC) {
MakeRailDepot(tile, _current_player, dir, (RailType)p1);
MarkTileDirtyByTile(tile);
d->xy = tile;
d->town_index = ClosestTownFromTile(tile, (uint)-1)->index;
UpdateSignalsOnSegment(tile, dir);
YapfNotifyTrackLayoutChange(tile, TrackdirToTrack(DiagdirToDiagTrackdir(dir)));
}
return cost + _price.build_train_depot;
}
/** Build signals, alternate between double/single, signal/semaphore,
* pre/exit/combo-signals, and what-else not. If the rail piece does not
* have any signals, bit 4 (cycle signal-type) is ignored
* @param tile tile where to build the signals
* @param flags operation to perform
* @param p1 various bitstuffed elements
* - p1 = (bit 0-2) - track-orientation, valid values: 0-5 (Track enum)
* - p1 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle)
* - p1 = (bit 4) - 0 = signals, 1 = semaphores
* @param p2 used for CmdBuildManySignals() to copy direction of first signal
* TODO: p2 should be replaced by two bits for "along" and "against" the track.
*/
int32 CmdBuildSingleSignal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
Track track = (Track)GB(p1, 0, 3);
bool pre_signal = HASBIT(p1, 3);
SignalVariant sigvar = (pre_signal ^ HASBIT(p1, 4)) ? SIG_SEMAPHORE : SIG_ELECTRIC;
int32 cost;
if (!ValParamTrackOrientation(track) || !IsTileType(tile, MP_RAILWAY) || !EnsureNoVehicleOnGround(tile))
return CMD_ERROR;
/* Protect against invalid signal copying */
if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR;
/* You can only build signals on plain rail tiles, and the selected track must exist */
if (!IsPlainRailTile(tile) || !HasTrack(tile, track)) return CMD_ERROR;
if (!CheckTileOwnership(tile)) return CMD_ERROR;
_error_message = STR_1005_NO_SUITABLE_RAILROAD_TRACK;
{
/* See if this is a valid track combination for signals, (ie, no overlap) */
TrackBits trackbits = GetTrackBits(tile);
if (KILL_FIRST_BIT(trackbits) != 0 && /* More than one track present */
trackbits != TRACK_BIT_HORZ &&
trackbits != TRACK_BIT_VERT) {
return CMD_ERROR;
}
}
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (!HasSignalOnTrack(tile, track)) {
/* build new signals */
cost = _price.build_signals;
} else {
if (p2 != 0 && sigvar != GetSignalVariant(tile, track)) {
/* convert signals <-> semaphores */
cost = _price.build_signals + _price.remove_signals;
} else {
/* it is free to change orientation/pre-exit-combo signals */
cost = 0;
}
}
if (flags & DC_EXEC) {
if (!HasSignals(tile)) {
/* there are no signals at all on this tile yet */
SetHasSignals(tile, true);
SetSignalStates(tile, 0xF); // all signals are on
SetPresentSignals(tile, 0); // no signals built by default
SetSignalType(tile, track, SIGTYPE_NORMAL);
SetSignalVariant(tile, track, sigvar);
}
if (p2 == 0) {
if (!HasSignalOnTrack(tile, track)) {
/* build new signals */
SetPresentSignals(tile, GetPresentSignals(tile) | SignalOnTrack(track));
SetSignalType(tile, track, SIGTYPE_NORMAL);
SetSignalVariant(tile, track, sigvar);
} else {
if (pre_signal) {
/* cycle between normal -> pre -> exit -> combo -> ... */
SignalType type = GetSignalType(tile, track);
SetSignalType(tile, track, type == SIGTYPE_COMBO ? SIGTYPE_NORMAL : (SignalType)(type + 1));
} else {
CycleSignalSide(tile, track);
}
}
} else {
/* If CmdBuildManySignals is called with copying signals, just copy the
* direction of the first signal given as parameter by CmdBuildManySignals */
SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | (p2 & SignalOnTrack(track)));
SetSignalVariant(tile, track, sigvar);
}
MarkTileDirtyByTile(tile);
SetSignalsOnBothDir(tile, track);
YapfNotifyTrackLayoutChange(tile, track);
}
return cost;
}
/** Build many signals by dragging; AutoSignals
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle)
* - p2 = (bit 4) - 0 = signals, 1 = semaphores
* - p2 = (bit 5) - 0 = build, 1 = remove signals
* - p2 = (bit 24-31) - user defined signals_density
*/
static int32 CmdSignalTrackHelper(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
int32 ret, total_cost, signal_ctr;
byte signals;
bool error = true;
TileIndex end_tile;
Track track = (Track)GB(p2, 0, 3);
bool mode = HASBIT(p2, 3);
bool semaphores = HASBIT(p2, 4);
bool remove = HASBIT(p2, 5);
Trackdir trackdir = TrackToTrackdir(track);
byte signal_density = GB(p2, 24, 8);
if (p1 >= MapSize()) return CMD_ERROR;
end_tile = p1;
if (signal_density == 0 || signal_density > 20) return CMD_ERROR;
if (!IsTileType(tile, MP_RAILWAY)) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* for vertical/horizontal tracks, double the given signals density
* since the original amount will be too dense (shorter tracks) */
if (!IsDiagonalTrack(track)) signal_density *= 2;
if (CmdFailed(ValidateAutoDrag(&trackdir, tile, end_tile))) return CMD_ERROR;
track = TrackdirToTrack(trackdir); /* trackdir might have changed, keep track in sync */
/* copy the signal-style of the first rail-piece if existing */
if (HasSignals(tile)) {
signals = GetPresentSignals(tile) & SignalOnTrack(track);
if (signals == 0) signals = SignalOnTrack(track); /* Can this actually occur? */
/* copy signal/semaphores style (independent of CTRL) */
semaphores = GetSignalVariant(tile, track) != SIG_ELECTRIC;
} else { // no signals exist, drag a two-way signal stretch
signals = SignalOnTrack(track);
}
/* signal_ctr - amount of tiles already processed
* signals_density - patch setting to put signal on every Nth tile (double space on |, -- tracks)
**********
* trackdir - trackdir to build with autorail
* semaphores - semaphores or signals
* signals - is there a signal/semaphore on the first tile, copy its style (two-way/single-way)
* and convert all others to semaphore/signal
* remove - 1 remove signals, 0 build signals */
signal_ctr = total_cost = 0;
for (;;) {
/* only build/remove signals with the specified density */
if (signal_ctr % signal_density == 0) {
uint32 p1 = GB(TrackdirToTrack(trackdir), 0, 3);
SB(p1, 3, 1, mode);
SB(p1, 4, 1, semaphores);
ret = DoCommand(tile, p1, signals, flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS);
/* Be user-friendly and try placing signals as much as possible */
if (!CmdFailed(ret)) {
error = false;
total_cost += ret;
}
}
if (tile == end_tile) break;
tile += ToTileIndexDiff(_trackdelta[trackdir]);
signal_ctr++;
/* toggle railbit for the non-diagonal tracks (|, -- tracks) */
if (!IsDiagonalTrackdir(trackdir)) ToggleBitT(trackdir, 0);
}
return error ? CMD_ERROR : total_cost;
}
/** Build signals on a stretch of track.
* Stub for the unified signal builder/remover
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle)
* - p2 = (bit 4) - 0 = signals, 1 = semaphores
* - p2 = (bit 5) - 0 = build, 1 = remove signals
* - p2 = (bit 24-31) - user defined signals_density
* @see CmdSignalTrackHelper
*/
int32 CmdBuildSignalTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
return CmdSignalTrackHelper(tile, flags, p1, p2);
}
/** Remove signals
* @param tile coordinates where signal is being deleted from
* @param flags operation to perform
* @param p1 various bitstuffed elements, only track information is used
* - (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum)
* - (bit 3) - override signal/semaphore, or pre/exit/combo signal (CTRL-toggle)
* - (bit 4) - 0 = signals, 1 = semaphores
* @param p2 unused
*/
int32 CmdRemoveSingleSignal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
Track track = (Track)GB(p1, 0, 3);
if (!ValParamTrackOrientation(track) ||
!IsTileType(tile, MP_RAILWAY) ||
!EnsureNoVehicleOnGround(tile) ||
!HasSignalOnTrack(tile, track)) {
return CMD_ERROR;
}
/* Only water can remove signals from anyone */
if (_current_player != OWNER_WATER && !CheckTileOwnership(tile)) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* Do it? */
if (flags & DC_EXEC) {
SetPresentSignals(tile, GetPresentSignals(tile) & ~SignalOnTrack(track));
/* removed last signal from tile? */
if (GetPresentSignals(tile) == 0) {
SetSignalStates(tile, 0);
SetHasSignals(tile, false);
SetSignalVariant(tile, INVALID_TRACK, SIG_ELECTRIC); // remove any possible semaphores
}
SetSignalsOnBothDir(tile, track);
YapfNotifyTrackLayoutChange(tile, track);
MarkTileDirtyByTile(tile);
}
return _price.remove_signals;
}
/** Remove signals on a stretch of track.
* Stub for the unified signal builder/remover
* @param tile start tile of drag
* @param flags operation to perform
* @param p1 end tile of drag
* @param p2 various bitstuffed elements
* - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum)
* - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle)
* - p2 = (bit 4) - 0 = signals, 1 = semaphores
* - p2 = (bit 5) - 0 = build, 1 = remove signals
* - p2 = (bit 24-31) - user defined signals_density
* @see CmdSignalTrackHelper
*/
int32 CmdRemoveSignalTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
return CmdSignalTrackHelper(tile, flags, p1, SETBIT(p2, 5)); // bit 5 is remove bit
}
typedef int32 DoConvertRailProc(TileIndex tile, RailType totype, bool exec);
/**
* Switches the rail type.
* Railtypes are stored on a per-tile basis, not on a per-track basis, so
* all the tracks in the given tile will be converted.
* @param tile The tile on which the railtype is to be convert.
* @param totype The railtype we want to convert to
* @param exec Switches between test and execute mode
* @return The cost and state of the operation
* @retval CMD_ERROR An error occured during the operation.
*/
static int32 DoConvertRail(TileIndex tile, RailType totype, bool exec)
{
if (!CheckTileOwnership(tile)) return CMD_ERROR;
if (GetRailType(tile) == totype) return CMD_ERROR;
if (!EnsureNoVehicleOnGround(tile) && (!IsCompatibleRail(GetRailType(tile), totype) || IsPlainRailTile(tile))) return CMD_ERROR;
/* 'hidden' elrails can't be downgraded to normal rail when elrails are disabled */
if (_patches.disable_elrails && totype == RAILTYPE_RAIL && GetRailType(tile) == RAILTYPE_ELECTRIC) return CMD_ERROR;
/* change type. */
if (exec) {
SetRailType(tile, totype);
MarkTileDirtyByTile(tile);
/* notify YAPF about the track layout change */
TrackBits tracks = GetTrackBits(tile);
while (tracks != TRACK_BIT_NONE) {
YapfNotifyTrackLayoutChange(tile, RemoveFirstTrack(&tracks));
}
if (IsTileDepotType(tile, TRANSPORT_RAIL)) {
Vehicle *v;
/* Update build vehicle window related to this depot */
InvalidateWindowData(WC_BUILD_VEHICLE, tile);
/* update power of trains in this depot */
FOR_ALL_VEHICLES(v) {
if (v->type == VEH_TRAIN && IsFrontEngine(v) && v->tile == tile && v->u.rail.track == 0x80) {
TrainPowerChanged(v);
}
}
}
}
return _price.build_rail / 2;
}
extern int32 DoConvertStationRail(TileIndex tile, RailType totype, bool exec);
extern int32 DoConvertStreetRail(TileIndex tile, RailType totype, bool exec);
extern int32 DoConvertTunnelBridgeRail(TileIndex tile, RailType totype, bool exec);
/** Convert one rail type to the other. You can convert normal rail to
* monorail/maglev easily or vice-versa.
* @param tile end tile of rail conversion drag
* @param flags operation to perform
* @param p1 start tile of drag
* @param p2 new railtype to convert to
*/
int32 CmdConvertRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
int32 ret, cost, money;
int ex;
int ey;
int sx, sy, x, y;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (!ValParamRailtype(p2)) return CMD_ERROR;
if (p1 >= MapSize()) return CMD_ERROR;
/* make sure sx,sy are smaller than ex,ey */
ex = TileX(tile);
ey = TileY(tile);
sx = TileX(p1);
sy = TileY(p1);
if (ex < sx) Swap(ex, sx);
if (ey < sy) Swap(ey, sy);
money = GetAvailableMoneyForCommand();
cost = 0;
ret = 0;
for (x = sx; x <= ex; ++x) {
for (y = sy; y <= ey; ++y) {
TileIndex tile = TileXY(x, y);
DoConvertRailProc* proc;
switch (GetTileType(tile)) {
case MP_RAILWAY: proc = DoConvertRail; break;
case MP_STATION: proc = DoConvertStationRail; break;
case MP_STREET: proc = DoConvertStreetRail; break;
case MP_TUNNELBRIDGE: proc = DoConvertTunnelBridgeRail; break;
default: continue;
}
ret = proc(tile, (RailType)p2, false);
if (CmdFailed(ret)) continue;
cost += ret;
if (flags & DC_EXEC) {
money -= ret;
if (money < 0) {
_additional_cash_required = ret;
return cost - ret;
}
proc(tile, (RailType)p2, true);
}
}
}
return (cost == 0) ? ret : cost;
}
static int32 RemoveTrainDepot(TileIndex tile, uint32 flags)
{
if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
return CMD_ERROR;
if (!EnsureNoVehicleOnGround(tile))
return CMD_ERROR;
if (flags & DC_EXEC) {
DiagDirection dir = GetRailDepotDirection(tile);
DeleteDepot(GetDepotByTile(tile));
UpdateSignalsOnSegment(tile, dir);
YapfNotifyTrackLayoutChange(tile, TrackdirToTrack(DiagdirToDiagTrackdir(dir)));
}
return _price.remove_train_depot;
}
static int32 ClearTile_Track(TileIndex tile, byte flags)
{
int32 cost;
int32 ret;
if (flags & DC_AUTO) {
if (!IsTileOwner(tile, _current_player))
return_cmd_error(STR_1024_AREA_IS_OWNED_BY_ANOTHER);
if (IsPlainRailTile(tile)) {
return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);
} else {
return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
}
}
cost = 0;
switch (GetRailTileType(tile)) {
case RAIL_TILE_SIGNALS:
case RAIL_TILE_NORMAL: {
TrackBits tracks = GetTrackBits(tile);
while (tracks != TRACK_BIT_NONE) {
Track track = RemoveFirstTrack(&tracks);
ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
if (CmdFailed(ret)) return CMD_ERROR;
cost += ret;
}
return cost;
}
case RAIL_TILE_DEPOT:
return RemoveTrainDepot(tile, flags);
case RAIL_TILE_WAYPOINT:
return RemoveTrainWaypoint(tile, flags, false);
default:
return CMD_ERROR;
}
}
#include "table/track_land.h"
static void DrawSingleSignal(TileIndex tile, Track track, byte condition, uint image, uint pos)
{
bool side = (_opt.road_side != 0) && _patches.signal_side;
static const Point SignalPositions[2][12] = {
{ /* Signals on the left side */
/* LEFT LEFT RIGHT RIGHT UPPER UPPER */
{ 8, 5}, {14, 1}, { 1, 14}, { 9, 11}, { 1, 0}, { 3, 10},
/* LOWER LOWER X X Y Y */
{11, 4}, {14, 14}, {11, 3}, { 4, 13}, { 3, 4}, {11, 13}
}, { /* Signals on the right side */
/* LEFT LEFT RIGHT RIGHT UPPER UPPER */
{14, 1}, {12, 10}, { 4, 6}, { 1, 14}, {10, 4}, { 0, 1},
/* LOWER LOWER X X Y Y */
{14, 14}, { 5, 12}, {11, 13}, { 4, 3}, {13, 4}, { 3, 11}
}
};
static const SpriteID SignalBase[2][2][4] = {
{ /* Signals on left side */
{ 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */
{ 0x1353, 0x1363, 0x1373, 0x1383} /* semaphores */
}, { /* Signals on right side */
{ 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */
{ 0x1446, 0x1456, 0x1466, 0x1476} /* semaphores */
/* | | | | */
/* normal, entry, exit, combo */
}
};
uint x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x;
uint y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y;
SpriteID sprite;
/* _signal_base is set by our NewGRF Action 5 loader. If it is 0 then we
* just draw the standard signals, else we get the offset from _signal_base
* and draw that sprite. All the signal sprites are loaded sequentially. */
if (_signal_base == 0 || (GetSignalType(tile, track) == SIGTYPE_NORMAL && GetSignalVariant(tile, track) == SIG_ELECTRIC)) {
sprite = SignalBase[side][GetSignalVariant(tile, track)][GetSignalType(tile, track)] + image + condition;
} else {
sprite = _signal_base + (GetSignalType(tile, track) - 1) * 16 + GetSignalVariant(tile, track) * 64 + image + condition;
}
AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, 10, GetSlopeZ(x,y));
}
static uint32 _drawtile_track_palette;
static void DrawTrackFence_NW(const TileInfo *ti)
{
SpriteID image = 0x515;
if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x519 : 0x51B;
AddSortableSpriteToDraw(image, _drawtile_track_palette,
ti->x, ti->y + 1, 16, 1, 4, ti->z);
}
static void DrawTrackFence_SE(const TileInfo *ti)
{
SpriteID image = 0x515;
if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x519 : 0x51B;
AddSortableSpriteToDraw(image, _drawtile_track_palette,
ti->x, ti->y + TILE_SIZE - 1, 16, 1, 4, ti->z);
}
static void DrawTrackFence_NW_SE(const TileInfo *ti)
{
DrawTrackFence_NW(ti);
DrawTrackFence_SE(ti);
}
static void DrawTrackFence_NE(const TileInfo *ti)
{
SpriteID image = 0x516;
if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x51A : 0x51C;
AddSortableSpriteToDraw(image, _drawtile_track_palette,
ti->x + 1, ti->y, 1, 16, 4, ti->z);
}
static void DrawTrackFence_SW(const TileInfo *ti)
{
SpriteID image = 0x516;
if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x51A : 0x51C;
AddSortableSpriteToDraw(image, _drawtile_track_palette,
ti->x + TILE_SIZE - 1, ti->y, 1, 16, 4, ti->z);
}
static void DrawTrackFence_NE_SW(const TileInfo *ti)
{
DrawTrackFence_NE(ti);
DrawTrackFence_SW(ti);
}
static void DrawTrackFence_NS_1(const TileInfo *ti)
{
int z = ti->z;
if (ti->tileh & SLOPE_W) z += TILE_HEIGHT;
AddSortableSpriteToDraw(0x517, _drawtile_track_palette,
ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z);
}
static void DrawTrackFence_NS_2(const TileInfo *ti)
{
int z = ti->z;
if (ti->tileh & SLOPE_E) z += TILE_HEIGHT;
AddSortableSpriteToDraw(0x517, _drawtile_track_palette,
ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z);
}
static void DrawTrackFence_WE_1(const TileInfo *ti)
{
int z = ti->z;
if (ti->tileh & SLOPE_N) z += TILE_HEIGHT;
AddSortableSpriteToDraw(0x518, _drawtile_track_palette,
ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z);
}
static void DrawTrackFence_WE_2(const TileInfo *ti)
{
int z = ti->z;
if (ti->tileh & SLOPE_S) z += TILE_HEIGHT;
AddSortableSpriteToDraw(0x518, _drawtile_track_palette,
ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z);
}
static void DrawTrackDetails(const TileInfo* ti)
{
switch (GetRailGroundType(ti->tile)) {
case RAIL_GROUND_FENCE_NW: DrawTrackFence_NW(ti); break;
case RAIL_GROUND_FENCE_SE: DrawTrackFence_SE(ti); break;
case RAIL_GROUND_FENCE_SENW: DrawTrackFence_NW_SE(ti); break;
case RAIL_GROUND_FENCE_NE: DrawTrackFence_NE(ti); break;
case RAIL_GROUND_FENCE_SW: DrawTrackFence_SW(ti); break;
case RAIL_GROUND_FENCE_NESW: DrawTrackFence_NE_SW(ti); break;
case RAIL_GROUND_FENCE_VERT1: DrawTrackFence_NS_1(ti); break;
case RAIL_GROUND_FENCE_VERT2: DrawTrackFence_NS_2(ti); break;
case RAIL_GROUND_FENCE_HORIZ1: DrawTrackFence_WE_1(ti); break;
case RAIL_GROUND_FENCE_HORIZ2: DrawTrackFence_WE_2(ti); break;
default: break;
}
}
/**
* Draw ground sprite and track bits
* @param ti TileInfo
* @param track TrackBits to draw
*/
static void DrawTrackBits(TileInfo* ti, TrackBits track)
{
const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
SpriteID image;
SpriteID pal = PAL_NONE;
bool junction = false;
/* Select the sprite to use. */
(image = rti->base_sprites.track_y, track == TRACK_BIT_Y) ||
(image++, track == TRACK_BIT_X) ||
(image++, track == TRACK_BIT_UPPER) ||
(image++, track == TRACK_BIT_LOWER) ||
(image++, track == TRACK_BIT_RIGHT) ||
(image++, track == TRACK_BIT_LEFT) ||
(image++, track == TRACK_BIT_CROSS) ||
(image = rti->base_sprites.track_ns, track == TRACK_BIT_HORZ) ||
(image++, track == TRACK_BIT_VERT) ||
(junction = true, false) ||
(image = rti->base_sprites.ground, (track & TRACK_BIT_3WAY_NE) == 0) ||
(image++, (track & TRACK_BIT_3WAY_SW) == 0) ||
(image++, (track & TRACK_BIT_3WAY_NW) == 0) ||
(image++, (track & TRACK_BIT_3WAY_SE) == 0) ||
(image++, true);
if (ti->tileh != SLOPE_FLAT) {
uint foundation = GetRailFoundation(ti->tileh, track);
if (foundation != 0) DrawFoundation(ti, foundation);
/* DrawFoundation() modifies it.
* Default sloped sprites.. */
if (ti->tileh != SLOPE_FLAT)
image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y;
}
switch (GetRailGroundType(ti->tile)) {
case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break;
case RAIL_GROUND_ICE_DESERT: image += rti->snow_offset; break;
default: break;
}
DrawGroundSprite(image, pal);
/* Draw track pieces individually for junction tiles */
if (junction) {
if (track & TRACK_BIT_X) DrawGroundSprite(rti->base_sprites.single_y, PAL_NONE);
if (track & TRACK_BIT_Y) DrawGroundSprite(rti->base_sprites.single_x, PAL_NONE);
if (track & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PAL_NONE);
if (track & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PAL_NONE);
if (track & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PAL_NONE);
if (track & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PAL_NONE);
}
if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti);
}
static void DrawSignals(TileIndex tile, TrackBits rails)
{
#define MAYBE_DRAW_SIGNAL(x,y,z,t) if (IsSignalPresent(tile, x)) DrawSingleSignal(tile, t, GetSingleSignalState(tile, x), y - 0x4FB, z)
if (!(rails & TRACK_BIT_Y)) {
if (!(rails & TRACK_BIT_X)) {
if (rails & TRACK_BIT_LEFT) {
MAYBE_DRAW_SIGNAL(2, 0x509, 0, TRACK_LEFT);
MAYBE_DRAW_SIGNAL(3, 0x507, 1, TRACK_LEFT);
}
if (rails & TRACK_BIT_RIGHT) {
MAYBE_DRAW_SIGNAL(0, 0x509, 2, TRACK_RIGHT);
MAYBE_DRAW_SIGNAL(1, 0x507, 3, TRACK_RIGHT);
}
if (rails & TRACK_BIT_UPPER) {
MAYBE_DRAW_SIGNAL(3, 0x505, 4, TRACK_UPPER);
MAYBE_DRAW_SIGNAL(2, 0x503, 5, TRACK_UPPER);
}
if (rails & TRACK_BIT_LOWER) {
MAYBE_DRAW_SIGNAL(1, 0x505, 6, TRACK_LOWER);
MAYBE_DRAW_SIGNAL(0, 0x503, 7, TRACK_LOWER);
}
} else {
MAYBE_DRAW_SIGNAL(3, 0x4FB, 8, TRACK_X);
MAYBE_DRAW_SIGNAL(2, 0x4FD, 9, TRACK_X);
}
} else {
MAYBE_DRAW_SIGNAL(3, 0x4FF, 10, TRACK_Y);
MAYBE_DRAW_SIGNAL(2, 0x501, 11, TRACK_Y);
}
}
static void DrawTile_Track(TileInfo *ti)
{
const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
SpriteID image;
_drawtile_track_palette = PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile));
if (IsPlainRailTile(ti->tile)) {
TrackBits rails = GetTrackBits(ti->tile);
DrawTrackBits(ti, rails);
if (HASBIT(_display_opt, DO_FULL_DETAIL)) DrawTrackDetails(ti);
if (HasSignals(ti->tile)) DrawSignals(ti->tile, rails);
} else {
/* draw depot/waypoint */
const DrawTileSprites* dts;
const DrawTileSeqStruct* dtss;
uint32 relocation;
if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh);
if (IsRailDepot(ti->tile)) {
dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)];
relocation = rti->total_offset;
image = dts->ground_sprite;
if (image != SPR_FLAT_GRASS_TILE) image += rti->total_offset;
/* adjust ground tile for desert
* don't adjust for snow, because snow in depots looks weird */
if (IsSnowRailGround(ti->tile) && _opt.landscape == LT_TROPIC) {
if (image != SPR_FLAT_GRASS_TILE) {
image += rti->snow_offset; // tile with tracks
} else {
image = SPR_FLAT_SNOWY_TILE; // flat ground
}
}
} else {
/* look for customization */
byte stat_id = GetWaypointByTile(ti->tile)->stat_id;
const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, stat_id);
if (statspec != NULL) {
/* emulate station tile - open with building */
const Station* st = ComposeWaypointStation(ti->tile);
uint gfx = 2;
if (HASBIT(statspec->callbackmask, CBM_CUSTOM_LAYOUT)) {
uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
if (callback != CALLBACK_FAILED) gfx = callback;
}
if (statspec->renderdata == NULL) {
dts = GetStationTileLayout(gfx);
} else {
dts = &statspec->renderdata[(gfx < statspec->tiles ? gfx : 0) + GetWaypointAxis(ti->tile)];
}
if (dts != NULL && dts->seq != NULL) {
relocation = GetCustomStationRelocation(statspec, st, ti->tile);
image = dts->ground_sprite;
if (HASBIT(image, SPRITE_MODIFIER_USE_OFFSET)) {
image += GetCustomStationGroundRelocation(statspec, st, ti->tile);
image += rti->custom_ground_offset;
} else {
image += rti->total_offset;
}
} else {
goto default_waypoint;
}
} else {
default_waypoint:
/* There is no custom layout, fall back to the default graphics */
dts = &_waypoint_gfx_table[GetWaypointAxis(ti->tile)];
relocation = 0;
image = dts->ground_sprite + rti->total_offset;
if (IsSnowRailGround(ti->tile)) image += rti->snow_offset;
}
}
DrawGroundSprite(image, PAL_NONE);
if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti);
foreach_draw_tile_seq(dtss, dts->seq) {
SpriteID image = dtss->image;
SpriteID pal;
/* Unlike stations, our default waypoint has no variation for
* different railtype, so don't use the railtype offset if
* no relocation is set */
if (HASBIT(image, SPRITE_MODIFIER_USE_OFFSET)) {
image += rti->total_offset;
} else {
image += relocation;
}
if (HASBIT(_transparent_opt, TO_BUILDINGS)) {
SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);
pal = PALETTE_TO_TRANSPARENT;
} else if (HASBIT(image, PALETTE_MODIFIER_COLOR)) {
pal = _drawtile_track_palette;
} else {
pal = dtss->pal;
}
if ((byte)dtss->delta_z != 0x80) {
AddSortableSpriteToDraw(
image, pal,
ti->x + dtss->delta_x, ti->y + dtss->delta_y,
dtss->size_x, dtss->size_y,
dtss->size_z, ti->z + dtss->delta_z
);
} else {
AddChildSpriteScreen(image, pal, dtss->delta_x, dtss->delta_y);
}
}
}
DrawBridgeMiddle(ti);
}
static void DrawTileSequence(int x, int y, SpriteID ground, const DrawTileSeqStruct* dtss, uint32 offset)
{
SpriteID palette = PLAYER_SPRITE_COLOR(_local_player);
DrawSprite(ground, PAL_NONE, x, y);
for (; dtss->image != 0; dtss++) {
Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
SpriteID image = dtss->image + offset;
DrawSprite(image, HASBIT(image, PALETTE_MODIFIER_COLOR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
}
}
void DrawTrainDepotSprite(int x, int y, int dir, RailType railtype)
{
const DrawTileSprites* dts = &_depot_gfx_table[dir];
SpriteID image = dts->ground_sprite;
uint32 offset = GetRailTypeInfo(railtype)->total_offset;
if (image != SPR_FLAT_GRASS_TILE) image += offset;
DrawTileSequence(x + 33, y + 17, image, dts->seq, offset);
}
void DrawDefaultWaypointSprite(int x, int y, RailType railtype)
{
uint32 offset = GetRailTypeInfo(railtype)->total_offset;
const DrawTileSprites* dts = &_waypoint_gfx_table[AXIS_X];
DrawTileSequence(x, y, dts->ground_sprite + offset, dts->seq, 0);
}
struct SetSignalsData {
int cur;
int cur_stack;
bool stop;
bool has_presignal;
/* presignal info */
int presignal_exits;
int presignal_exits_free;
/* these are used to keep track of the signals that change. */
TrackdirByte bit[NUM_SSD_ENTRY];
TileIndex tile[NUM_SSD_ENTRY];
/* these are used to keep track of the stack that modifies presignals recursively */
TileIndex next_tile[NUM_SSD_STACK];
DiagDirectionByte next_dir[NUM_SSD_STACK];
};
static bool SetSignalsEnumProc(TileIndex tile, void* data, Trackdir trackdir, uint length, byte* state)
{
SetSignalsData* ssd = (SetSignalsData*)data;
Track track = TrackdirToTrack(trackdir);
if (!IsTileType(tile, MP_RAILWAY)) return false;
/* the tile has signals? */
if (HasSignalOnTrack(tile, track)) {
if (HasSignalOnTrackdir(tile, ReverseTrackdir(trackdir))) {
/* yes, add the signal to the list of signals */
if (ssd->cur != NUM_SSD_ENTRY) {
ssd->tile[ssd->cur] = tile; // remember the tile index
ssd->bit[ssd->cur] = trackdir; // and the controlling bit number
ssd->cur++;
}
/* remember if this block has a presignal. */
ssd->has_presignal |= IsPresignalEntry(tile, track);
}
if (HasSignalOnTrackdir(tile, trackdir) && IsPresignalExit(tile, track)) {
/* this is an exit signal that points out from the segment */
ssd->presignal_exits++;
if (GetSignalStateByTrackdir(tile, trackdir) != SIGNAL_STATE_RED)
ssd->presignal_exits_free++;
}
return true;
} else if (IsTileDepotType(tile, TRANSPORT_RAIL)) {
return true; // don't look further if the tile is a depot
}
return false;
}
/* Struct to parse data from VehicleFromPos to SignalVehicleCheckProc */
struct SignalVehicleCheckStruct {
TileIndex tile;
uint track;
};
static void *SignalVehicleCheckProc(Vehicle *v, void *data)
{
const SignalVehicleCheckStruct* dest = (SignalVehicleCheckStruct*)data;
if (v->type != VEH_TRAIN) return NULL;
/* Wrong tile, or no train? Not a match */
if (v->tile != dest->tile) return NULL;
/* Are we on the same piece of track? */
if (dest->track & v->u.rail.track * 0x101) return v;
return NULL;
}
/* Special check for SetSignalsAfterProc, to see if there is a vehicle on this tile */
static bool SignalVehicleCheck(TileIndex tile, uint track)
{
SignalVehicleCheckStruct dest;
dest.tile = tile;
dest.track = track;
/* Locate vehicles in tunnels or on bridges */
if (IsTunnelTile(tile) || IsBridgeTile(tile)) {
TileIndex end;
DiagDirection direction;
if (IsTunnelTile(tile)) {
end = GetOtherTunnelEnd(tile);
direction = GetTunnelDirection(tile);
} else {
end = GetOtherBridgeEnd(tile);
direction = GetBridgeRampDirection(tile);
}
dest.track = 1 << (direction & 1); // get the trackbit the vehicle would have if it has not entered the tunnel yet (ie is still visible)
/* check for a vehicle with that trackdir on the start tile of the tunnel */
if (VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL) return true;
/* check for a vehicle with that trackdir on the end tile of the tunnel */
if (VehicleFromPos(end, &dest, SignalVehicleCheckProc) != NULL) return true;
/* now check all tiles from start to end for a warping vehicle
* NOTE: the hashes for tiles may overlap, so this could maybe be optimised a bit by not checking every tile? */
dest.track = 0x40; //Vehicle inside a tunnel or on a bridge
for (; tile != end; tile += TileOffsByDiagDir(direction)) {
if (VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL)
return true;
}
/* no vehicle found */
return false;
}
return VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL;
}
static void SetSignalsAfterProc(TrackPathFinder *tpf)
{
SetSignalsData *ssd = (SetSignalsData*)tpf->userdata;
const TrackPathFinderLink* link;
uint offs;
uint i;
ssd->stop = false;
/* Go through all the PF tiles */
for (i = 0; i < lengthof(tpf->hash_head); i++) {
/* Empty hash item */
if (tpf->hash_head[i] == 0) continue;
/* If 0x8000 is not set, there is only 1 item */
if (!(tpf->hash_head[i] & 0x8000)) {
/* Check if there is a vehicle on this tile */
if (SignalVehicleCheck(tpf->hash_tile[i], tpf->hash_head[i])) {
ssd->stop = true;
return;
}
} else {
/* There are multiple items, where hash_tile points to the first item in the list */
offs = tpf->hash_tile[i];
do {
/* Find the next item */
link = PATHFIND_GET_LINK_PTR(tpf, offs);
/* Check if there is a vehicle on this tile */
if (SignalVehicleCheck(link->tile, link->flags)) {
ssd->stop = true;
return;
}
/* Goto the next item */
} while ((offs = link->next) != 0xFFFF);
}
}
}
static const DiagDirection _dir_from_track[14] = {
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,
};
static void ChangeSignalStates(SetSignalsData *ssd)
{
int i;
/* thinking about presignals...
* the presignal is green if,
* if no train is in the segment AND
* there is at least one green exit signal OR
* there are no exit signals in the segment */
/* then mark the signals in the segment accordingly */
for (i = 0; i != ssd->cur; i++) {
TileIndex tile = ssd->tile[i];
byte bit = SignalAgainstTrackdir(ssd->bit[i]);
uint signals = GetSignalStates(tile);
Track track = TrackdirToTrack(ssd->bit[i]);
/* presignals don't turn green if there is at least one presignal exit and none are free */
if (IsPresignalEntry(tile, track)) {
int ex = ssd->presignal_exits, exfree = ssd->presignal_exits_free;
/* subtract for dual combo signals so they don't count themselves */
if (IsPresignalExit(tile, track) && HasSignalOnTrackdir(tile, ssd->bit[i])) {
ex--;
if (GetSignalStateByTrackdir(tile, ssd->bit[i]) != SIGNAL_STATE_RED) exfree--;
}
/* if we have exits and none are free, make red. */
if (ex && !exfree) goto make_red;
}
/* check if the signal is unaffected. */
if (ssd->stop) {
make_red:
/* turn red */
if ((bit & signals) == 0) continue;
} else {
/* turn green */
if ((bit & signals) != 0) continue;
}
/* Update signals on the other side of this exit-combo signal; it changed. */
if (IsPresignalExit(tile, track)) {
if (ssd->cur_stack != NUM_SSD_STACK) {
ssd->next_tile[ssd->cur_stack] = tile;
ssd->next_dir[ssd->cur_stack] = _dir_from_track[ssd->bit[i]];
ssd->cur_stack++;
} else {
DEBUG(misc, 0, "NUM_SSD_STACK too small"); /// @todo WTF is this???
}
}
/* it changed, so toggle it */
SetSignalStates(tile, signals ^ bit);
MarkTileDirtyByTile(tile);
}
}
bool UpdateSignalsOnSegment(TileIndex tile, DiagDirection direction)
{
SetSignalsData ssd;
int result = -1;
ssd.cur_stack = 0;
for (;;) {
/* go through one segment and update all signals pointing into that segment. */
ssd.cur = ssd.presignal_exits = ssd.presignal_exits_free = 0;
ssd.has_presignal = false;
FollowTrack(tile, 0xC000 | TRANSPORT_RAIL, 0, direction, SetSignalsEnumProc, SetSignalsAfterProc, &ssd);
ChangeSignalStates(&ssd);
/* remember the result only for the first iteration. */
if (result < 0) {
/* stay in depot while segment is occupied or while all presignal exits are blocked */
result = ssd.stop || (ssd.presignal_exits > 0 && ssd.presignal_exits_free == 0);
}
/* if any exit signals were changed, we need to keep going to modify the stuff behind those. */
if (ssd.cur_stack == 0) break;
/* one or more exit signals were changed, so we need to update another segment too. */
tile = ssd.next_tile[--ssd.cur_stack];
direction = ssd.next_dir[ssd.cur_stack];
}
return result != 0;
}
void SetSignalsOnBothDir(TileIndex tile, byte track)
{
static const DiagDirection _search_dir_1[] = {
DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_SW, DIAGDIR_SE
};
static const DiagDirection _search_dir_2[] = {
DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NE
};
UpdateSignalsOnSegment(tile, _search_dir_1[track]);
UpdateSignalsOnSegment(tile, _search_dir_2[track]);
}
static uint GetSlopeZ_Track(TileIndex tile, uint x, uint y)
{
uint z;
Slope tileh = GetTileSlope(tile, &z);
if (tileh == SLOPE_FLAT) return z;
if (IsPlainRailTile(tile)) {
uint f = GetRailFoundation(tileh, GetTrackBits(tile));
if (f != 0) {
if (IsSteepSlope(tileh)) {
z += TILE_HEIGHT;
} else if (f < 15) {
return z + TILE_HEIGHT; // leveled foundation
}
tileh = _inclined_tileh[f - 15]; // inclined foundation
}
return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
} else {
return z + TILE_HEIGHT;
}
}
static Slope GetSlopeTileh_Track(TileIndex tile, Slope tileh)
{
if (tileh == SLOPE_FLAT) return SLOPE_FLAT;
if (IsPlainRailTile(tile)) {
uint f = GetRailFoundation(tileh, GetTrackBits(tile));
if (f == 0) return tileh;
if (f < 15) return SLOPE_FLAT; // leveled foundation
return _inclined_tileh[f - 15]; // inclined foundation
} else {
return SLOPE_FLAT;
}
}
static void GetAcceptedCargo_Track(TileIndex tile, AcceptedCargo ac)
{
/* not used */
}
static void AnimateTile_Track(TileIndex tile)
{
/* not used */
}
static void TileLoop_Track(TileIndex tile)
{
RailGroundType old_ground = GetRailGroundType(tile);
RailGroundType new_ground;
switch (_opt.landscape) {
case LT_ARCTIC:
if (GetTileZ(tile) > GetSnowLine()) {
new_ground = RAIL_GROUND_ICE_DESERT;
goto set_ground;
}
break;
case LT_TROPIC:
if (GetTropicZone(tile) == TROPICZONE_DESERT) {
new_ground = RAIL_GROUND_ICE_DESERT;
goto set_ground;
}
break;
}
if (!IsPlainRailTile(tile)) return;
new_ground = RAIL_GROUND_GRASS;
if (old_ground != RAIL_GROUND_BARREN) { // wait until bottom is green
/* determine direction of fence */
TrackBits rail = GetTrackBits(tile);
switch (rail) {
case TRACK_BIT_UPPER: new_ground = RAIL_GROUND_FENCE_HORIZ1; break;
case TRACK_BIT_LOWER: new_ground = RAIL_GROUND_FENCE_HORIZ2; break;
case TRACK_BIT_LEFT: new_ground = RAIL_GROUND_FENCE_VERT1; break;
case TRACK_BIT_RIGHT: new_ground = RAIL_GROUND_FENCE_VERT2; break;
default: {
PlayerID owner = GetTileOwner(tile);
if (rail == (TRACK_BIT_LOWER | TRACK_BIT_RIGHT) || (
(rail & TRACK_BIT_3WAY_NW) == 0 &&
(rail & TRACK_BIT_X)
)) {
TileIndex n = tile + TileDiffXY(0, -1);
TrackBits nrail = GetTrackBits(n);
if (!IsTileType(n, MP_RAILWAY) ||
!IsTileOwner(n, owner) ||
nrail == TRACK_BIT_UPPER ||
nrail == TRACK_BIT_LEFT) {
new_ground = RAIL_GROUND_FENCE_NW;
}
}
if (rail == (TRACK_BIT_UPPER | TRACK_BIT_LEFT) || (
(rail & TRACK_BIT_3WAY_SE) == 0 &&
(rail & TRACK_BIT_X)
)) {
TileIndex n = tile + TileDiffXY(0, 1);
TrackBits nrail = GetTrackBits(n);
if (!IsTileType(n, MP_RAILWAY) ||
!IsTileOwner(n, owner) ||
nrail == TRACK_BIT_LOWER ||
nrail == TRACK_BIT_RIGHT) {
new_ground = (new_ground == RAIL_GROUND_FENCE_NW) ?
RAIL_GROUND_FENCE_SENW : RAIL_GROUND_FENCE_SE;
}
}
if (rail == (TRACK_BIT_LOWER | TRACK_BIT_LEFT) || (
(rail & TRACK_BIT_3WAY_NE) == 0 &&
(rail & TRACK_BIT_Y)
)) {
TileIndex n = tile + TileDiffXY(-1, 0);
TrackBits nrail = GetTrackBits(n);
if (!IsTileType(n, MP_RAILWAY) ||
!IsTileOwner(n, owner) ||
nrail == TRACK_BIT_UPPER ||
nrail == TRACK_BIT_RIGHT) {
new_ground = RAIL_GROUND_FENCE_NE;
}
}
if (rail == (TRACK_BIT_UPPER | TRACK_BIT_RIGHT) || (
(rail & TRACK_BIT_3WAY_SW) == 0 &&
(rail & TRACK_BIT_Y)
)) {
TileIndex n = tile + TileDiffXY(1, 0);
TrackBits nrail = GetTrackBits(n);
if (!IsTileType(n, MP_RAILWAY) ||
!IsTileOwner(n, owner) ||
nrail == TRACK_BIT_LOWER ||
nrail == TRACK_BIT_LEFT) {
new_ground = (new_ground == RAIL_GROUND_FENCE_NE) ?
RAIL_GROUND_FENCE_NESW : RAIL_GROUND_FENCE_SW;
}
}
break;
}
}
}
set_ground:
if (old_ground != new_ground) {
SetRailGroundType(tile, new_ground);
MarkTileDirtyByTile(tile);
}
}
static uint32 GetTileTrackStatus_Track(TileIndex tile, TransportType mode, uint sub_mode)
{
if (mode != TRANSPORT_RAIL) return 0;
switch (GetRailTileType(tile)) {
default: NOT_REACHED();
case RAIL_TILE_NORMAL: {
TrackBits rails = GetTrackBits(tile);
uint32 ret = rails * 0x101;
return (rails == TRACK_BIT_CROSS) ? ret | 0x40 : ret;
}
case RAIL_TILE_SIGNALS: {
uint32 ret = GetTrackBits(tile) * 0x101;
byte a = GetPresentSignals(tile);
uint b = GetSignalStates(tile);
b &= a;
/* When signals are not present (in neither
* direction), we pretend them to be green. (So if
* signals are only one way, the other way will
* implicitely become `red' */
if ((a & 0xC) == 0) b |= 0xC;
if ((a & 0x3) == 0) b |= 0x3;
if ((b & 0x8) == 0) ret |= 0x10070000;
if ((b & 0x4) == 0) ret |= 0x07100000;
if ((b & 0x2) == 0) ret |= 0x20080000;
if ((b & 0x1) == 0) ret |= 0x08200000;
return ret;
}
case RAIL_TILE_DEPOT: return AxisToTrackBits(DiagDirToAxis(GetRailDepotDirection(tile))) * 0x101;
case RAIL_TILE_WAYPOINT: return GetRailWaypointBits(tile) * 0x101;
}
}
static void ClickTile_Track(TileIndex tile)
{
switch (GetRailTileType(tile)) {
case RAIL_TILE_DEPOT: ShowDepotWindow(tile, VEH_TRAIN); break;
case RAIL_TILE_WAYPOINT: ShowRenameWaypointWindow(GetWaypointByTile(tile)); break;
default: break;
}
}
static void GetTileDesc_Track(TileIndex tile, TileDesc *td)
{
td->owner = GetTileOwner(tile);
switch (GetRailTileType(tile)) {
case RAIL_TILE_NORMAL:
td->str = STR_1021_RAILROAD_TRACK;
break;
case RAIL_TILE_SIGNALS: {
const StringID signal_type[4][4] = {
{
STR_RAILROAD_TRACK_WITH_NORMAL_SIGNALS,
STR_RAILROAD_TRACK_WITH_NORMAL_PRESIGNALS,
STR_RAILROAD_TRACK_WITH_NORMAL_EXITSIGNALS,
STR_RAILROAD_TRACK_WITH_NORMAL_COMBOSIGNALS
},
{
STR_RAILROAD_TRACK_WITH_NORMAL_PRESIGNALS,
STR_RAILROAD_TRACK_WITH_PRESIGNALS,
STR_RAILROAD_TRACK_WITH_PRE_EXITSIGNALS,
STR_RAILROAD_TRACK_WITH_PRE_COMBOSIGNALS
},
{
STR_RAILROAD_TRACK_WITH_NORMAL_EXITSIGNALS,
STR_RAILROAD_TRACK_WITH_PRE_EXITSIGNALS,
STR_RAILROAD_TRACK_WITH_EXITSIGNALS,
STR_RAILROAD_TRACK_WITH_EXIT_COMBOSIGNALS
},
{
STR_RAILROAD_TRACK_WITH_NORMAL_COMBOSIGNALS,
STR_RAILROAD_TRACK_WITH_PRE_COMBOSIGNALS,
STR_RAILROAD_TRACK_WITH_EXIT_COMBOSIGNALS,
STR_RAILROAD_TRACK_WITH_COMBOSIGNALS
}
};
td->str = signal_type[GetSignalType(tile, TRACK_UPPER)][GetSignalType(tile, TRACK_LOWER)];
break;
}
case RAIL_TILE_DEPOT:
td->str = STR_1023_RAILROAD_TRAIN_DEPOT;
break;
case RAIL_TILE_WAYPOINT:
default:
td->str = STR_LANDINFO_WAYPOINT;
break;
}
}
static void ChangeTileOwner_Track(TileIndex tile, PlayerID old_player, PlayerID new_player)
{
if (!IsTileOwner(tile, old_player)) return;
if (new_player != PLAYER_SPECTATOR) {
SetTileOwner(tile, new_player);
} else {
DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
}
}
static const byte _fractcoords_behind[4] = { 0x8F, 0x8, 0x80, 0xF8 };
static const byte _fractcoords_enter[4] = { 0x8A, 0x48, 0x84, 0xA8 };
static const signed char _deltacoord_leaveoffset[8] = {
-1, 0, 1, 0, /* x */
0, 1, 0, -1 /* y */
};
static uint32 VehicleEnter_Track(Vehicle *v, TileIndex tile, int x, int y)
{
byte fract_coord;
byte fract_coord_leave;
DiagDirection dir;
int length;
/* this routine applies only to trains in depot tiles */
if (v->type != VEH_TRAIN || !IsTileDepotType(tile, TRANSPORT_RAIL)) return VETSB_CONTINUE;
/* depot direction */
dir = GetRailDepotDirection(tile);
/* calculate the point where the following wagon should be activated */
/* this depends on the length of the current vehicle */
length = v->u.rail.cached_veh_length;
fract_coord_leave =
((_fractcoords_enter[dir] & 0x0F) + // x
(length + 1) * _deltacoord_leaveoffset[dir]) +
(((_fractcoords_enter[dir] >> 4) + // y
((length + 1) * _deltacoord_leaveoffset[dir+4])) << 4);
fract_coord = (x & 0xF) + ((y & 0xF) << 4);
if (_fractcoords_behind[dir] == fract_coord) {
/* make sure a train is not entering the tile from behind */
return VETSB_CANNOT_ENTER;
} else if (_fractcoords_enter[dir] == fract_coord) {
if (DiagDirToDir(ReverseDiagDir(dir)) == v->direction) {
/* enter the depot */
v->u.rail.track = TRACK_BIT_DEPOT,
v->vehstatus |= VS_HIDDEN; /* hide it */
v->direction = ReverseDir(v->direction);
if (v->next == NULL) VehicleEnterDepot(v);
v->tile = tile;
InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
return VETSB_ENTERED_WORMHOLE;
}
} else if (fract_coord_leave == fract_coord) {
if (DiagDirToDir(dir) == v->direction) {
/* leave the depot? */
if ((v = v->next) != NULL) {
v->vehstatus &= ~VS_HIDDEN;
v->u.rail.track = (DiagDirToAxis(dir) == AXIS_X ? TRACK_BIT_X : TRACK_BIT_Y);
}
}
}
return VETSB_CONTINUE;
}
extern const TileTypeProcs _tile_type_rail_procs = {
DrawTile_Track, /* draw_tile_proc */
GetSlopeZ_Track, /* get_slope_z_proc */
ClearTile_Track, /* clear_tile_proc */
GetAcceptedCargo_Track, /* get_accepted_cargo_proc */
GetTileDesc_Track, /* get_tile_desc_proc */
GetTileTrackStatus_Track, /* get_tile_track_status_proc */
ClickTile_Track, /* click_tile_proc */
AnimateTile_Track, /* animate_tile_proc */
TileLoop_Track, /* tile_loop_clear */
ChangeTileOwner_Track, /* change_tile_owner_clear */
NULL, /* get_produced_cargo_proc */
VehicleEnter_Track, /* vehicle_enter_tile_proc */
GetSlopeTileh_Track, /* get_slope_tileh_proc */
};
|