summaryrefslogtreecommitdiff
path: root/src/saveload/afterload.cpp
blob: bc3aa436ac742d04f656f0aa59dc1edddbb6ff0b (plain)
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
/* $Id$ */

/** @file afterload.cpp Code updating data after game load */

#include "../stdafx.h"
#include "../void_map.h"
#include "../signs_base.h"
#include "../window_func.h"
#include "../fios.h"
#include "../train.h"
#include "../string_func.h"
#include "../gamelog.h"
#include "../network/network.h"
#include "../gfxinit.h"
#include "../functions.h"
#include "../industry_map.h"
#include "../town_map.h"
#include "../clear_map.h"
#include "../vehicle_func.h"
#include "../newgrf_station.h"
#include "../yapf/yapf.hpp"
#include "../elrail_func.h"
#include "../signs_func.h"
#include "../aircraft.h"
#include "../unmovable_map.h"
#include "../tree_map.h"
#include "../company_func.h"
#include "../road_cmd.h"
#include "../ai/ai.hpp"

#include "table/strings.h"

#include "saveload_internal.h"

#include <signal.h>

extern StringID _switch_mode_errorstr;
extern Company *DoStartupNewCompany(bool is_ai);
extern void InitializeRailGUI();

/**
 * Makes a tile canal or water depending on the surroundings.
 *
 * Must only be used for converting old savegames. Use WaterClass now.
 *
 * This as for example docks and shipdepots do not store
 * whether the tile used to be canal or 'normal' water.
 * @param t the tile to change.
 * @param o the owner of the new tile.
 * @param include_invalid_water_class Also consider WATER_CLASS_INVALID, i.e. industry tiles on land
 */
void SetWaterClassDependingOnSurroundings(TileIndex t, bool include_invalid_water_class)
{
	/* If the slope is not flat, we always assume 'land' (if allowed). Also for one-corner-raised-shores.
	 * Note: Wrt. autosloping under industry tiles this is the most fool-proof behaviour. */
	if (GetTileSlope(t, NULL) != SLOPE_FLAT) {
		if (include_invalid_water_class) {
			SetWaterClass(t, WATER_CLASS_INVALID);
			return;
		} else {
			NOT_REACHED();
		}
	}

	/* Mark tile dirty in all cases */
	MarkTileDirtyByTile(t);

	if (TileX(t) == 0 || TileY(t) == 0 || TileX(t) == MapMaxX() - 1 || TileY(t) == MapMaxY() - 1) {
		/* tiles at map borders are always WATER_CLASS_SEA */
		SetWaterClass(t, WATER_CLASS_SEA);
		return;
	}

	bool has_water = false;
	bool has_canal = false;
	bool has_river = false;

	for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
		TileIndex neighbour = TileAddByDiagDir(t, dir);
		switch (GetTileType(neighbour)) {
			case MP_WATER:
				/* clear water and shipdepots have already a WaterClass associated */
				if (IsCoast(neighbour)) {
					has_water = true;
				} else if (!IsLock(neighbour)) {
					switch (GetWaterClass(neighbour)) {
						case WATER_CLASS_SEA:   has_water = true; break;
						case WATER_CLASS_CANAL: has_canal = true; break;
						case WATER_CLASS_RIVER: has_river = true; break;
						default: NOT_REACHED();
					}
				}
				break;

			case MP_RAILWAY:
				/* Shore or flooded halftile */
				has_water |= (GetRailGroundType(neighbour) == RAIL_GROUND_WATER);
				break;

			case MP_TREES:
				/* trees on shore */
				has_water |= (GetTreeGround(neighbour) == TREE_GROUND_SHORE);
				break;

			default: break;
		}
	}

	if (!has_water && !has_canal && !has_river && include_invalid_water_class) {
		SetWaterClass(t, WATER_CLASS_INVALID);
		return;
	}

	if (has_river && !has_canal) {
		SetWaterClass(t, WATER_CLASS_RIVER);
	} else if (has_canal || !has_water) {
		SetWaterClass(t, WATER_CLASS_CANAL);
	} else {
		SetWaterClass(t, WATER_CLASS_SEA);
	}
}

static void ConvertTownOwner()
{
	for (TileIndex tile = 0; tile != MapSize(); tile++) {
		switch (GetTileType(tile)) {
			case MP_ROAD:
				if (GB(_m[tile].m5, 4, 2) == ROAD_TILE_CROSSING && HasBit(_m[tile].m3, 7)) {
					_m[tile].m3 = OWNER_TOWN;
				}
				/* FALLTHROUGH */

			case MP_TUNNELBRIDGE:
				if (GetTileOwner(tile) & 0x80) SetTileOwner(tile, OWNER_TOWN);
				break;

			default: break;
		}
	}
}

/* since savegame version 4.1, exclusive transport rights are stored at towns */
static void UpdateExclusiveRights()
{
	Town *t;

	FOR_ALL_TOWNS(t) {
		t->exclusivity = INVALID_COMPANY;
	}

	/* FIXME old exclusive rights status is not being imported (stored in s->blocked_months_obsolete)
	 *   could be implemented this way:
	 * 1.) Go through all stations
	 *     Build an array town_blocked[ town_id ][ company_id ]
	 *     that stores if at least one station in that town is blocked for a company
	 * 2.) Go through that array, if you find a town that is not blocked for
	 *     one company, but for all others, then give him exclusivity.
	 */
}

static const byte convert_currency[] = {
	 0,  1, 12,  8,  3,
	10, 14, 19,  4,  5,
	 9, 11, 13,  6, 17,
	16, 22, 21,  7, 15,
	18,  2, 20,
};

/* since savegame version 4.2 the currencies are arranged differently */
static void UpdateCurrencies()
{
	_settings_game.locale.currency = convert_currency[_settings_game.locale.currency];
}

/* Up to revision 1413 the invisible tiles at the southern border have not been
 * MP_VOID, even though they should have. This is fixed by this function
 */
static void UpdateVoidTiles()
{
	uint i;

	for (i = 0; i < MapMaxY(); ++i) MakeVoid(i * MapSizeX() + MapMaxX());
	for (i = 0; i < MapSizeX(); ++i) MakeVoid(MapSizeX() * MapMaxY() + i);
}

static inline RailType UpdateRailType(RailType rt, RailType min)
{
	return rt >= min ? (RailType)(rt + 1): rt;
}

/**
 * Initialization of the windows and several kinds of caches.
 * This is not done directly in AfterLoadGame because these
 * functions require that all saveload conversions have been
 * done. As people tend to add savegame conversion stuff after
 * the intialization of the windows and caches quite some bugs
 * had been made.
 * Moving this out of there is both cleaner and less bug-prone.
 *
 * @return true if everything went according to plan, otherwise false.
 */
static bool InitializeWindowsAndCaches()
{
	/* Initialize windows */
	ResetWindowSystem();
	SetupColoursAndInitialWindow();

	ResetViewportAfterLoadGame();

	/* Update coordinates of the signs. */
	UpdateAllStationVirtCoord();
	UpdateAllSignVirtCoords();
	UpdateAllTownVirtCoords();
	UpdateAllWaypointSigns();

	Company *c;
	FOR_ALL_COMPANIES(c) {
		/* For each company, verify (while loading a scenario) that the inauguration date is the current year and set it
		 * accordingly if it is not the case.  No need to set it on companies that are not been used already,
		 * thus the MIN_YEAR (which is really nothing more than Zero, initialized value) test */
		if (_file_to_saveload.filetype == FT_SCENARIO && c->inaugurated_year != MIN_YEAR) {
			c->inaugurated_year = _cur_year;
		}
	}

	SetCachedEngineCounts();

	/* Towns have a noise controlled number of airports system
	 * So each airport's noise value must be added to the town->noise_reached value
	 * Reset each town's noise_reached value to '0' before. */
	UpdateAirportsNoise();

	CheckTrainsLengths();

	return true;
}

typedef void (CDECL *SignalHandlerPointer)(int);
static SignalHandlerPointer _prev_segfault = NULL;
static SignalHandlerPointer _prev_abort = NULL;

static void CDECL HandleSavegameLoadCrash(int signum);

/**
 * Replaces signal handlers of SIGSEGV and SIGABRT
 * and stores pointers to original handlers in memory.
 */
static void SetSignalHandlers()
{
	_prev_segfault = signal(SIGSEGV, HandleSavegameLoadCrash);
	_prev_abort = signal(SIGABRT, HandleSavegameLoadCrash);
}

/**
 * Resets signal handlers back to original handlers.
 */
static void ResetSignalHandlers()
{
	signal(SIGSEGV, _prev_segfault);
	signal(SIGABRT, _prev_abort);
}

/**
 * Signal handler used to give a user a more useful report for crashes during
 * the savegame loading process; especially when there's problems with the
 * NewGRFs that are required by the savegame.
 * @param signum received signal
 */
static void CDECL HandleSavegameLoadCrash(int signum)
{
	ResetSignalHandlers();

	char buffer[8192];
	char *p = buffer;
	p += seprintf(p, lastof(buffer),
			"Loading your savegame caused OpenTTD to crash.\n"
			"This is most likely caused by a missing NewGRF or a NewGRF that has been\n"
			"loaded as replacement for a missing NewGRF. OpenTTD cannot easily\n"
			"determine whether a replacement NewGRF is of a newer or older version.\n"
			"It will load a NewGRF with the same GRF ID as the missing NewGRF. This\n"
			"means that if the author makes incompatible NewGRFs with the same GRF ID\n"
			"OpenTTD cannot magically do the right thing. In most cases OpenTTD will\n"
			"load the savegame and not crash, but this is an exception.\n"
			"Please load the savegame with the appropriate NewGRFs. When loading a\n"
			"savegame still crashes when all NewGRFs are found you should file a\n"
			"bug report. The missing NewGRFs are:\n");

	for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
		if (HasBit(c->flags, GCF_COMPATIBLE)) {
			char buf[40];
			md5sumToString(buf, lastof(buf), c->md5sum);
			p += seprintf(p, lastof(buffer), "NewGRF %08X (%s) not found; checksum %s. Tried another NewGRF with same GRF ID\n", BSWAP32(c->grfid), c->filename, buf);
		}
		if (c->status == GCS_NOT_FOUND) {
			char buf[40];
			md5sumToString(buf, lastof(buf), c->md5sum);
			p += seprintf(p, lastof(buffer), "NewGRF %08X (%s) not found; checksum %s\n", BSWAP32(c->grfid), c->filename, buf);
		}
	}

	ShowInfo(buffer);

	SignalHandlerPointer call = signum == SIGSEGV ? _prev_segfault : _prev_abort;
	if (call != NULL) call(signum);
}

/**
 * Tries to change owner of this rail tile to a valid owner. In very old versions it could happen that
 * a rail track had an invalid owner. When conversion isn't possible, track is removed.
 * @param t tile to update
 */
static void FixOwnerOfRailTrack(TileIndex t)
{
	assert(!Company::IsValidID(GetTileOwner(t)) && (IsLevelCrossingTile(t) || IsPlainRailTile(t)));

	/* remove leftover rail piece from crossing (from very old savegames) */
	Vehicle *v = NULL, *w;
	FOR_ALL_VEHICLES(w) {
		if (w->type == VEH_TRAIN && w->tile == t) {
			v = w;
			break;
		}
	}

	if (v != NULL) {
		/* when there is a train on crossing (it could happen in TTD), set owner of crossing to train owner */
		SetTileOwner(t, v->owner);
		return;
	}

	/* try to find any connected rail */
	for (DiagDirection dd = DIAGDIR_BEGIN; dd < DIAGDIR_END; dd++) {
		TileIndex tt = t + TileOffsByDiagDir(dd);
		if (GetTileTrackStatus(t, TRANSPORT_RAIL, 0, dd) != 0 &&
				GetTileTrackStatus(tt, TRANSPORT_RAIL, 0, ReverseDiagDir(dd)) != 0 &&
				Company::IsValidID(GetTileOwner(tt))) {
			SetTileOwner(t, GetTileOwner(tt));
			return;
		}
	}

	if (IsLevelCrossingTile(t)) {
		/* else change the crossing to normal road (road vehicles won't care) */
		MakeRoadNormal(t, GetCrossingRoadBits(t), GetRoadTypes(t), GetTownIndex(t),
			GetRoadOwner(t, ROADTYPE_ROAD), GetRoadOwner(t, ROADTYPE_TRAM));
		return;
	}

	/* if it's not a crossing, make it clean land */
	MakeClear(t, CLEAR_GRASS, 0);
}

bool AfterLoadGame()
{
	SetSignalHandlers();

	TileIndex map_size = MapSize();
	Company *c;

	if (CheckSavegameVersion(98)) GamelogOldver();

	GamelogTestRevision();
	GamelogTestMode();

	if (CheckSavegameVersion(98)) GamelogGRFAddList(_grfconfig);

	if (CheckSavegameVersion(119)) {
		_pause_mode = (_pause_mode == 2) ? PM_PAUSED_NORMAL : PM_UNPAUSED;
	}

	/* in very old versions, size of train stations was stored differently */
	if (CheckSavegameVersion(2)) {
		Station *st;
		FOR_ALL_STATIONS(st) {
			if (st->train_tile != 0 && st->trainst_h == 0) {
				uint n = _savegame_type == SGT_OTTD ? 4 : 3; // OTTD uses 4 bits per dimensions, TTD 3 bits
				uint w = GB(st->trainst_w, n, n);
				uint h = GB(st->trainst_w, 0, n);

				if (GetRailStationAxis(st->train_tile) != AXIS_X) Swap(w, h);

				st->trainst_w = w;
				st->trainst_h = h;

				assert(GetStationIndex(st->train_tile + TileDiffXY(w - 1, h - 1)) == st->index);
			}
		}
	}

	/* in version 2.1 of the savegame, town owner was unified. */
	if (CheckSavegameVersionOldStyle(2, 1)) ConvertTownOwner();

	/* from version 4.1 of the savegame, exclusive rights are stored at towns */
	if (CheckSavegameVersionOldStyle(4, 1)) UpdateExclusiveRights();

	/* from version 4.2 of the savegame, currencies are in a different order */
	if (CheckSavegameVersionOldStyle(4, 2)) UpdateCurrencies();

	/* In old version there seems to be a problem that water is owned by
	 * OWNER_NONE, not OWNER_WATER.. I can't replicate it for the current
	 * (4.3) version, so I just check when versions are older, and then
	 * walk through the whole map.. */
	if (CheckSavegameVersionOldStyle(4, 3)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_WATER) && GetTileOwner(t) >= MAX_COMPANIES) {
				SetTileOwner(t, OWNER_WATER);
			}
		}
	}

	if (CheckSavegameVersion(84)) {
		FOR_ALL_COMPANIES(c) {
			c->name = CopyFromOldName(c->name_1);
			if (c->name != NULL) c->name_1 = STR_SV_UNNAMED;
			c->president_name = CopyFromOldName(c->president_name_1);
			if (c->president_name != NULL) c->president_name_1 = SPECSTR_PRESIDENT_NAME;
		}

		Station *st;
		FOR_ALL_STATIONS(st) {
			st->name = CopyFromOldName(st->string_id);
			/* generating new name would be too much work for little effect, use the station name fallback */
			if (st->name != NULL) st->string_id = STR_SV_STNAME_FALLBACK;
		}

		Town *t;
		FOR_ALL_TOWNS(t) {
			t->name = CopyFromOldName(t->townnametype);
			if (t->name != NULL) t->townnametype = SPECSTR_TOWNNAME_START + _settings_game.game_creation.town_name;
		}

		Waypoint *wp;
		FOR_ALL_WAYPOINTS(wp) {
			wp->name = CopyFromOldName(wp->string);
			wp->string = STR_EMPTY;
		}
	}

	/* From this point the old names array is cleared. */
	ResetOldNames();

	if (CheckSavegameVersion(106)) {
		/* no station is determined by 'tile == INVALID_TILE' now (instead of '0') */
		Station *st;
		FOR_ALL_STATIONS(st) {
			if (st->airport_tile == 0) st->airport_tile = INVALID_TILE;
			if (st->dock_tile    == 0) st->dock_tile    = INVALID_TILE;
			if (st->train_tile   == 0) st->train_tile   = INVALID_TILE;
		}

		/* the same applies to Company::location_of_HQ */
		Company *c;
		FOR_ALL_COMPANIES(c) {
			if (c->location_of_HQ == 0 || (CheckSavegameVersion(4) && c->location_of_HQ == 0xFFFF)) {
				c->location_of_HQ = INVALID_TILE;
			}
		}
	}

	/* convert road side to my format. */
	if (_settings_game.vehicle.road_side) _settings_game.vehicle.road_side = 1;

	/* Check if all NewGRFs are present, we are very strict in MP mode */
	GRFListCompatibility gcf_res = IsGoodGRFConfigList();
	if (_networking && gcf_res != GLC_ALL_GOOD) {
		SetSaveLoadError(STR_NETWORK_ERR_CLIENT_NEWGRF_MISMATCH);
		/* Restore the signals */
		ResetSignalHandlers();
		return false;
	}

	switch (gcf_res) {
		case GLC_COMPATIBLE: _switch_mode_errorstr = STR_NEWGRF_COMPATIBLE_LOAD_WARNING; break;
		case GLC_NOT_FOUND:  _switch_mode_errorstr = STR_NEWGRF_DISABLED_WARNING; _pause_mode = PM_PAUSED_ERROR; break;
		default: break;
	}

	/* Update current year
	 * must be done before loading sprites as some newgrfs check it */
	SetDate(_date);

	/* Force dynamic engines off when loading older savegames */
	if (CheckSavegameVersion(95)) _settings_game.vehicle.dynamic_engines = 0;

	/* Load the sprites */
	GfxLoadSprites();
	LoadStringWidthTable();

	/* Copy temporary data to Engine pool */
	CopyTempEngineData();

	/* Connect front and rear engines of multiheaded trains and converts
	 * subtype to the new format */
	if (CheckSavegameVersionOldStyle(17, 1)) ConvertOldMultiheadToNew();

	/* Connect front and rear engines of multiheaded trains */
	ConnectMultiheadedTrains();

	/* reinit the landscape variables (landscape might have changed) */
	InitializeLandscapeVariables(true);

	/* Update all vehicles */
	AfterLoadVehicles(true);

	/* Make sure there is an AI attached to an AI company */
	{
		Company *c;
		FOR_ALL_COMPANIES(c) {
			if (c->is_ai && c->ai_instance == NULL) AI::StartNew(c->index);
		}
	}

	/* Update all waypoints */
	if (CheckSavegameVersion(12)) FixOldWaypoints();

	/* make sure there is a town in the game */
	if (_game_mode == GM_NORMAL && !ClosestTownFromTile(0, UINT_MAX)) {
		SetSaveLoadError(STR_NO_TOWN_IN_SCENARIO);
		/* Restore the signals */
		ResetSignalHandlers();
		return false;
	}

	/* The void tiles on the southern border used to belong to a wrong class (pre 4.3).
	 * This problem appears in savegame version 21 too, see r3455. But after loading the
	 * savegame and saving again, the buggy map array could be converted to new savegame
	 * version. It didn't show up before r12070. */
	if (CheckSavegameVersion(87)) UpdateVoidTiles();

	/* If Load Scenario / New (Scenario) Game is used,
	 *  a company does not exist yet. So create one here.
	 * 1 exeption: network-games. Those can have 0 companies
	 *   But this exeption is not true for non dedicated network_servers! */
	if (!Company::IsValidID(COMPANY_FIRST) && (!_networking || (_networking && _network_server && !_network_dedicated)))
		DoStartupNewCompany(false);

	if (CheckSavegameVersion(72)) {
		/* Locks/shiplifts in very old savegames had OWNER_WATER as owner */
		for (TileIndex t = 0; t < MapSize(); t++) {
			switch (GetTileType(t)) {
				default: break;

				case MP_WATER:
					if (GetWaterTileType(t) == WATER_TILE_LOCK && GetTileOwner(t) == OWNER_WATER) SetTileOwner(t, OWNER_NONE);
					break;

				case MP_STATION: {
					if (HasBit(_m[t].m6, 3)) SetBit(_m[t].m6, 2);
					StationGfx gfx = GetStationGfx(t);
					StationType st;
					if (       IsInsideMM(gfx,   0,   8)) { // Railway station
						st = STATION_RAIL;
						SetStationGfx(t, gfx - 0);
					} else if (IsInsideMM(gfx,   8,  67)) { // Airport
						st = STATION_AIRPORT;
						SetStationGfx(t, gfx - 8);
					} else if (IsInsideMM(gfx,  67,  71)) { // Truck
						st = STATION_TRUCK;
						SetStationGfx(t, gfx - 67);
					} else if (IsInsideMM(gfx,  71,  75)) { // Bus
						st = STATION_BUS;
						SetStationGfx(t, gfx - 71);
					} else if (gfx == 75) {                    // Oil rig
						st = STATION_OILRIG;
						SetStationGfx(t, gfx - 75);
					} else if (IsInsideMM(gfx,  76,  82)) { // Dock
						st = STATION_DOCK;
						SetStationGfx(t, gfx - 76);
					} else if (gfx == 82) {                    // Buoy
						st = STATION_BUOY;
						SetStationGfx(t, gfx - 82);
					} else if (IsInsideMM(gfx,  83, 168)) { // Extended airport
						st = STATION_AIRPORT;
						SetStationGfx(t, gfx - 83 + 67 - 8);
					} else if (IsInsideMM(gfx, 168, 170)) { // Drive through truck
						st = STATION_TRUCK;
						SetStationGfx(t, gfx - 168 + GFX_TRUCK_BUS_DRIVETHROUGH_OFFSET);
					} else if (IsInsideMM(gfx, 170, 172)) { // Drive through bus
						st = STATION_BUS;
						SetStationGfx(t, gfx - 170 + GFX_TRUCK_BUS_DRIVETHROUGH_OFFSET);
					} else {
						/* Restore the signals */
						ResetSignalHandlers();
						return false;
					}
					SB(_m[t].m6, 3, 3, st);
				} break;
			}
		}
	}

	for (TileIndex t = 0; t < map_size; t++) {
		switch (GetTileType(t)) {
			case MP_STATION: {
				Station *st = GetStationByTile(t);

				/* Set up station spread; buoys do not have one */
				if (!IsBuoy(t)) st->rect.BeforeAddTile(t, StationRect::ADD_FORCE);

				switch (GetStationType(t)) {
					case STATION_TRUCK:
					case STATION_BUS:
						if (CheckSavegameVersion(6)) {
							/* From this version on there can be multiple road stops of the
							 * same type per station. Convert the existing stops to the new
							 * internal data structure. */
							RoadStop *rs = new RoadStop(t);
							if (rs == NULL) error("Too many road stops in savegame");

							RoadStop **head =
								IsTruckStop(t) ? &st->truck_stops : &st->bus_stops;
							*head = rs;
						}
						break;

					case STATION_OILRIG: {
						/* Very old savegames sometimes have phantom oil rigs, i.e.
						 * an oil rig which got shut down, but not completly removed from
						 * the map
						 */
						TileIndex t1 = TILE_ADDXY(t, 0, 1);
						if (IsTileType(t1, MP_INDUSTRY) &&
								GetIndustryGfx(t1) == GFX_OILRIG_1) {
							/* The internal encoding of oil rigs was changed twice.
							 * It was 3 (till 2.2) and later 5 (till 5.1).
							 * Setting it unconditionally does not hurt.
							 */
							GetStationByTile(t)->airport_type = AT_OILRIG;
						} else {
							DeleteOilRig(t);
						}
						break;
					}

					default: break;
				}
				break;
			}

			default: break;
		}
	}

	/* In version 2.2 of the savegame, we have new airports, so status of all aircraft is reset.
	 * This has to be called after the oilrig airport_type update above ^^^ ! */
	if (CheckSavegameVersionOldStyle(2, 2)) UpdateOldAircraft();

	/* In version 6.1 we put the town index in the map-array. To do this, we need
	 *  to use m2 (16bit big), so we need to clean m2, and that is where this is
	 *  all about ;) */
	if (CheckSavegameVersionOldStyle(6, 1)) {
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_HOUSE:
					_m[t].m4 = _m[t].m2;
					SetTownIndex(t, CalcClosestTownFromTile(t)->index);
					break;

				case MP_ROAD:
					_m[t].m4 |= (_m[t].m2 << 4);
					if ((GB(_m[t].m5, 4, 2) == ROAD_TILE_CROSSING ? (Owner)_m[t].m3 : GetTileOwner(t)) == OWNER_TOWN) {
						SetTownIndex(t, CalcClosestTownFromTile(t)->index);
					} else {
						SetTownIndex(t, 0);
					}
					break;

				default: break;
			}
		}
	}

	/* Force the freeform edges to false for old savegames. */
	if (CheckSavegameVersion(111)) {
		_settings_game.construction.freeform_edges = false;
	}

	/* From version 9.0, we update the max passengers of a town (was sometimes negative
	 *  before that. */
	if (CheckSavegameVersion(9)) {
		Town *t;
		FOR_ALL_TOWNS(t) UpdateTownMaxPass(t);
	}

	/* From version 16.0, we included autorenew on engines, which are now saved, but
	 *  of course, we do need to initialize them for older savegames. */
	if (CheckSavegameVersion(16)) {
		FOR_ALL_COMPANIES(c) {
			c->engine_renew_list            = NULL;
			c->settings.engine_renew        = false;
			c->settings.engine_renew_months = 6;
			c->settings.engine_renew_money  = 100000;
		}

		/* When loading a game, _local_company is not yet set to the correct value.
		 * However, in a dedicated server we are a spectator, so nothing needs to
		 * happen. In case we are not a dedicated server, the local company always
		 * becomes company 0, unless we are in the scenario editor where all the
		 * companies are 'invalid'.
		 */
		c = Company::GetIfValid(COMPANY_FIRST);
		if (!_network_dedicated && c != NULL) {
			c->settings = _settings_client.company;
		}
	}

	if (CheckSavegameVersion(48)) {
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_RAILWAY:
					if (IsPlainRail(t)) {
						/* Swap ground type and signal type for plain rail tiles, so the
						 * ground type uses the same bits as for depots and waypoints. */
						uint tmp = GB(_m[t].m4, 0, 4);
						SB(_m[t].m4, 0, 4, GB(_m[t].m2, 0, 4));
						SB(_m[t].m2, 0, 4, tmp);
					} else if (HasBit(_m[t].m5, 2)) {
						/* Split waypoint and depot rail type and remove the subtype. */
						ClrBit(_m[t].m5, 2);
						ClrBit(_m[t].m5, 6);
					}
					break;

				case MP_ROAD:
					/* Swap m3 and m4, so the track type for rail crossings is the
					 * same as for normal rail. */
					Swap(_m[t].m3, _m[t].m4);
					break;

				default: break;
			}
		}
	}

	if (CheckSavegameVersion(61)) {
		/* Added the RoadType */
		bool old_bridge = CheckSavegameVersion(42);
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_ROAD:
					SB(_m[t].m5, 6, 2, GB(_m[t].m5, 4, 2));
					switch (GetRoadTileType(t)) {
						default: NOT_REACHED();
						case ROAD_TILE_NORMAL:
							SB(_m[t].m4, 0, 4, GB(_m[t].m5, 0, 4));
							SB(_m[t].m4, 4, 4, 0);
							SB(_m[t].m6, 2, 4, 0);
							break;
						case ROAD_TILE_CROSSING:
							SB(_m[t].m4, 5, 2, GB(_m[t].m5, 2, 2));
							break;
						case ROAD_TILE_DEPOT:    break;
					}
					SetRoadTypes(t, ROADTYPES_ROAD);
					break;

				case MP_STATION:
					if (IsRoadStop(t)) SetRoadTypes(t, ROADTYPES_ROAD);
					break;

				case MP_TUNNELBRIDGE:
					/* Middle part of "old" bridges */
					if (old_bridge && IsBridge(t) && HasBit(_m[t].m5, 6)) break;
					if (((old_bridge && IsBridge(t)) ? (TransportType)GB(_m[t].m5, 1, 2) : GetTunnelBridgeTransportType(t)) == TRANSPORT_ROAD) {
						SetRoadTypes(t, ROADTYPES_ROAD);
					}
					break;

				default: break;
			}
		}
	}

	if (CheckSavegameVersion(114)) {
		bool fix_roadtypes = !CheckSavegameVersion(61);
		bool old_bridge = CheckSavegameVersion(42);

		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_ROAD:
					if (fix_roadtypes) SetRoadTypes(t, (RoadTypes)GB(_me[t].m7, 5, 3));
					SB(_me[t].m7, 5, 1, GB(_m[t].m3, 7, 1)); // snow/desert
					switch (GetRoadTileType(t)) {
						default: NOT_REACHED();
						case ROAD_TILE_NORMAL:
							SB(_me[t].m7, 0, 4, GB(_m[t].m3, 0, 4)); // road works
							SB(_m[t].m6, 3, 3, GB(_m[t].m3, 4, 3));  // ground
							SB(_m[t].m3, 0, 4, GB(_m[t].m4, 4, 4));  // tram bits
							SB(_m[t].m3, 4, 4, GB(_m[t].m5, 0, 4));  // tram owner
							SB(_m[t].m5, 0, 4, GB(_m[t].m4, 0, 4));  // road bits
							break;

						case ROAD_TILE_CROSSING:
							SB(_me[t].m7, 0, 5, GB(_m[t].m4, 0, 5)); // road owner
							SB(_m[t].m6, 3, 3, GB(_m[t].m3, 4, 3));  // ground
							SB(_m[t].m3, 4, 4, GB(_m[t].m5, 0, 4));  // tram owner
							SB(_m[t].m5, 0, 1, GB(_m[t].m4, 6, 1));  // road axis
							SB(_m[t].m5, 5, 1, GB(_m[t].m4, 5, 1));  // crossing state
							break;

						case ROAD_TILE_DEPOT:
							break;
					}
					if (!HasTownOwnedRoad(t)) {
						const Town *town = CalcClosestTownFromTile(t);
						if (town != NULL) SetTownIndex(t, town->index);
					}
					_m[t].m4 = 0;
					break;

				case MP_STATION:
					if (!IsRoadStop(t)) break;

					if (fix_roadtypes) SetRoadTypes(t, (RoadTypes)GB(_m[t].m3, 0, 3));
					SB(_me[t].m7, 0, 5, HasBit(_m[t].m6, 2) ? OWNER_TOWN : GetTileOwner(t));
					SB(_m[t].m3, 4, 4, _m[t].m1);
					_m[t].m4 = 0;
					break;

				case MP_TUNNELBRIDGE:
					if (old_bridge && IsBridge(t) && HasBit(_m[t].m5, 6)) break;
					if (((old_bridge && IsBridge(t)) ? (TransportType)GB(_m[t].m5, 1, 2) : GetTunnelBridgeTransportType(t)) == TRANSPORT_ROAD) {
						if (fix_roadtypes) SetRoadTypes(t, (RoadTypes)GB(_m[t].m3, 0, 3));

						Owner o = GetTileOwner(t);
						SB(_me[t].m7, 0, 5, o); // road owner
						SB(_m[t].m3, 4, 4, o == OWNER_NONE ? OWNER_TOWN : o); // tram owner
					}
					SB(_m[t].m6, 2, 4, GB(_m[t].m2, 4, 4)); // bridge type
					SB(_me[t].m7, 5, 1, GB(_m[t].m4, 7, 1)); // snow/desert

					_m[t].m2 = 0;
					_m[t].m4 = 0;
					break;

				default: break;
			}
		}
	}

	if (CheckSavegameVersion(42)) {
		Vehicle *v;

		for (TileIndex t = 0; t < map_size; t++) {
			if (MayHaveBridgeAbove(t)) ClearBridgeMiddle(t);
			if (IsBridgeTile(t)) {
				if (HasBit(_m[t].m5, 6)) { // middle part
					Axis axis = (Axis)GB(_m[t].m5, 0, 1);

					if (HasBit(_m[t].m5, 5)) { // transport route under bridge?
						if (GB(_m[t].m5, 3, 2) == TRANSPORT_RAIL) {
							MakeRailNormal(
								t,
								GetTileOwner(t),
								axis == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X,
								GetRailType(t)
							);
						} else {
							TownID town = IsTileOwner(t, OWNER_TOWN) ? ClosestTownFromTile(t, UINT_MAX)->index : 0;

							MakeRoadNormal(
								t,
								axis == AXIS_X ? ROAD_Y : ROAD_X,
								ROADTYPES_ROAD,
								town,
								GetTileOwner(t), OWNER_NONE
							);
						}
					} else {
						if (GB(_m[t].m5, 3, 2) == 0) {
							MakeClear(t, CLEAR_GRASS, 3);
						} else {
							if (GetTileSlope(t, NULL) != SLOPE_FLAT) {
								MakeShore(t);
							} else {
								if (GetTileOwner(t) == OWNER_WATER) {
									MakeWater(t);
								} else {
									MakeCanal(t, GetTileOwner(t), Random());
								}
							}
						}
					}
					SetBridgeMiddle(t, axis);
				} else { // ramp
					Axis axis = (Axis)GB(_m[t].m5, 0, 1);
					uint north_south = GB(_m[t].m5, 5, 1);
					DiagDirection dir = ReverseDiagDir(XYNSToDiagDir(axis, north_south));
					TransportType type = (TransportType)GB(_m[t].m5, 1, 2);

					_m[t].m5 = 1 << 7 | type << 2 | dir;
				}
			}
		}

		FOR_ALL_VEHICLES(v) {
			if (v->type != VEH_TRAIN && v->type != VEH_ROAD) continue;
			if (IsBridgeTile(v->tile)) {
				DiagDirection dir = GetTunnelBridgeDirection(v->tile);

				if (dir != DirToDiagDir(v->direction)) continue;
				switch (dir) {
					default: NOT_REACHED();
					case DIAGDIR_NE: if ((v->x_pos & 0xF) !=  0)            continue; break;
					case DIAGDIR_SE: if ((v->y_pos & 0xF) != TILE_SIZE - 1) continue; break;
					case DIAGDIR_SW: if ((v->x_pos & 0xF) != TILE_SIZE - 1) continue; break;
					case DIAGDIR_NW: if ((v->y_pos & 0xF) !=  0)            continue; break;
				}
			} else if (v->z_pos > GetSlopeZ(v->x_pos, v->y_pos)) {
				v->tile = GetNorthernBridgeEnd(v->tile);
			} else {
				continue;
			}
			if (v->type == VEH_TRAIN) {
				((Train *)v)->track = TRACK_BIT_WORMHOLE;
			} else {
				((RoadVehicle *)v)->state = RVSB_WORMHOLE;
			}
		}
	}

	/* Elrails got added in rev 24 */
	if (CheckSavegameVersion(24)) {
		Vehicle *v;
		RailType min_rail = RAILTYPE_ELECTRIC;

		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_TRAIN) {
				RailType rt = RailVehInfo(v->engine_type)->railtype;

				((Train *)v)->railtype = rt;
				if (rt == RAILTYPE_ELECTRIC) min_rail = RAILTYPE_RAIL;
			}
		}

		/* .. so we convert the entire map from normal to elrail (so maintain "fairness") */
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_RAILWAY:
					SetRailType(t, UpdateRailType(GetRailType(t), min_rail));
					break;

				case MP_ROAD:
					if (IsLevelCrossing(t)) {
						SetRailType(t, UpdateRailType(GetRailType(t), min_rail));
					}
					break;

				case MP_STATION:
					if (IsRailwayStation(t)) {
						SetRailType(t, UpdateRailType(GetRailType(t), min_rail));
					}
					break;

				case MP_TUNNELBRIDGE:
					if (GetTunnelBridgeTransportType(t) == TRANSPORT_RAIL) {
						SetRailType(t, UpdateRailType(GetRailType(t), min_rail));
					}
					break;

				default:
					break;
			}
		}

		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_TRAIN && (IsFrontEngine(v) || IsFreeWagon(v))) TrainConsistChanged((Train *)v, true);
		}

	}

	/* In version 16.1 of the savegame a company can decide if trains, which get
	 * replaced, shall keep their old length. In all prior versions, just default
	 * to false */
	if (CheckSavegameVersionOldStyle(16, 1)) {
		FOR_ALL_COMPANIES(c) c->settings.renew_keep_length = false;
	}

	/* In version 17, ground type is moved from m2 to m4 for depots and
	 * waypoints to make way for storing the index in m2. The custom graphics
	 * id which was stored in m4 is now saved as a grf/id reference in the
	 * waypoint struct. */
	if (CheckSavegameVersion(17)) {
		Waypoint *wp;

		FOR_ALL_WAYPOINTS(wp) {
			if (wp->deleted == 0) {
				const StationSpec *statspec = NULL;

				if (HasBit(_m[wp->xy].m3, 4))
					statspec = GetCustomStationSpec(STAT_CLASS_WAYP, _m[wp->xy].m4 + 1);

				if (statspec != NULL) {
					wp->stat_id = _m[wp->xy].m4 + 1;
					wp->grfid = statspec->grffile->grfid;
					wp->localidx = statspec->localidx;
				} else {
					/* No custom graphics set, so set to default. */
					wp->stat_id = 0;
					wp->grfid = 0;
					wp->localidx = 0;
				}

				/* Move ground type bits from m2 to m4. */
				_m[wp->xy].m4 = GB(_m[wp->xy].m2, 0, 4);
				/* Store waypoint index in the tile. */
				_m[wp->xy].m2 = wp->index;
			}
		}
	} else {
		/* As of version 17, we recalculate the custom graphic ID of waypoints
		 * from the GRF ID / station index. */
		AfterLoadWaypoints();
	}

	/* From version 15, we moved a semaphore bit from bit 2 to bit 3 in m4, making
	 *  room for PBS. Now in version 21 move it back :P. */
	if (CheckSavegameVersion(21) && !CheckSavegameVersion(15)) {
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_RAILWAY:
					if (HasSignals(t)) {
						/* convert PBS signals to combo-signals */
						if (HasBit(_m[t].m2, 2)) SetSignalType(t, TRACK_X, SIGTYPE_COMBO);

						/* move the signal variant back */
						SetSignalVariant(t, TRACK_X, HasBit(_m[t].m2, 3) ? SIG_SEMAPHORE : SIG_ELECTRIC);
						ClrBit(_m[t].m2, 3);
					}

					/* Clear PBS reservation on track */
					if (!IsRailDepotTile(t)) {
						SB(_m[t].m4, 4, 4, 0);
					} else {
						ClrBit(_m[t].m3, 6);
					}
					break;

				case MP_STATION: // Clear PBS reservation on station
					ClrBit(_m[t].m3, 6);
					break;

				default: break;
			}
		}
	}

	if (CheckSavegameVersion(25)) {
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_ROAD) {
				RoadVehicle *rv = (RoadVehicle *)v;
				rv->vehstatus &= ~0x40;
				rv->slot = NULL;
				rv->slot_age = 0;
			}
		}
	} else {
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type != VEH_ROAD) continue;
			RoadVehicle *rv = (RoadVehicle *)v;
			if (rv->slot != NULL) rv->slot->num_vehicles++;
		}
	}

	if (CheckSavegameVersion(26)) {
		Station *st;
		FOR_ALL_STATIONS(st) {
			st->last_vehicle_type = VEH_INVALID;
		}
	}

	YapfNotifyTrackLayoutChange(INVALID_TILE, INVALID_TRACK);

	if (CheckSavegameVersion(34)) FOR_ALL_COMPANIES(c) ResetCompanyLivery(c);

	FOR_ALL_COMPANIES(c) {
		c->avail_railtypes = GetCompanyRailtypes(c->index);
		c->avail_roadtypes = GetCompanyRoadtypes(c->index);
	}

	if (!CheckSavegameVersion(27)) AfterLoadStations();

	/* Time starts at 0 instead of 1920.
	 * Account for this in older games by adding an offset */
	if (CheckSavegameVersion(31)) {
		Station *st;
		Waypoint *wp;
		Engine *e;
		Industry *i;
		Vehicle *v;

		_date += DAYS_TILL_ORIGINAL_BASE_YEAR;
		_cur_year += ORIGINAL_BASE_YEAR;

		FOR_ALL_STATIONS(st)  st->build_date      += DAYS_TILL_ORIGINAL_BASE_YEAR;
		FOR_ALL_WAYPOINTS(wp) wp->build_date      += DAYS_TILL_ORIGINAL_BASE_YEAR;
		FOR_ALL_ENGINES(e)    e->intro_date       += DAYS_TILL_ORIGINAL_BASE_YEAR;
		FOR_ALL_COMPANIES(c)  c->inaugurated_year += ORIGINAL_BASE_YEAR;
		FOR_ALL_INDUSTRIES(i) i->last_prod_year   += ORIGINAL_BASE_YEAR;

		FOR_ALL_VEHICLES(v) {
			v->date_of_last_service += DAYS_TILL_ORIGINAL_BASE_YEAR;
			v->build_year += ORIGINAL_BASE_YEAR;
		}
	}

	/* From 32 on we save the industry who made the farmland.
	 *  To give this prettyness to old savegames, we remove all farmfields and
	 *  plant new ones. */
	if (CheckSavegameVersion(32)) {
		Industry *i;

		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_CLEAR) && IsClearGround(t, CLEAR_FIELDS)) {
				/* remove fields */
				MakeClear(t, CLEAR_GRASS, 3);
			} else if (IsTileType(t, MP_CLEAR) || IsTileType(t, MP_TREES)) {
				/* remove fences around fields */
				SetFenceSE(t, 0);
				SetFenceSW(t, 0);
			}
		}

		FOR_ALL_INDUSTRIES(i) {
			uint j;

			if (GetIndustrySpec(i->type)->behaviour & INDUSTRYBEH_PLANT_ON_BUILT) {
				for (j = 0; j != 50; j++) PlantRandomFarmField(i);
			}
		}
	}

	/* Setting no refit flags to all orders in savegames from before refit in orders were added */
	if (CheckSavegameVersion(36)) {
		Order *order;
		Vehicle *v;

		FOR_ALL_ORDERS(order) {
			order->SetRefit(CT_NO_REFIT);
		}

		FOR_ALL_VEHICLES(v) {
			v->current_order.SetRefit(CT_NO_REFIT);
		}
	}

	/* from version 38 we have optional elrails, since we cannot know the
	 * preference of a user, let elrails enabled; it can be disabled manually */
	if (CheckSavegameVersion(38)) _settings_game.vehicle.disable_elrails = false;
	/* do the same as when elrails were enabled/disabled manually just now */
	SettingsDisableElrail(_settings_game.vehicle.disable_elrails);
	InitializeRailGUI();

	/* From version 53, the map array was changed for house tiles to allow
	 * space for newhouses grf features. A new byte, m7, was also added. */
	if (CheckSavegameVersion(53)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_HOUSE)) {
				if (GB(_m[t].m3, 6, 2) != TOWN_HOUSE_COMPLETED) {
					/* Move the construction stage from m3[7..6] to m5[5..4].
					 * The construction counter does not have to move. */
					SB(_m[t].m5, 3, 2, GB(_m[t].m3, 6, 2));
					SB(_m[t].m3, 6, 2, 0);

					/* The "house is completed" bit is now in m6[2]. */
					SetHouseCompleted(t, false);
				} else {
					/* The "lift has destination" bit has been moved from
					 * m5[7] to m7[0]. */
					SB(_me[t].m7, 0, 1, HasBit(_m[t].m5, 7));
					ClrBit(_m[t].m5, 7);

					/* The "lift is moving" bit has been removed, as it does
					 * the same job as the "lift has destination" bit. */
					ClrBit(_m[t].m1, 7);

					/* The position of the lift goes from m1[7..0] to m6[7..2],
					 * making m1 totally free, now. The lift position does not
					 * have to be a full byte since the maximum value is 36. */
					SetLiftPosition(t, GB(_m[t].m1, 0, 6 ));

					_m[t].m1 = 0;
					_m[t].m3 = 0;
					SetHouseCompleted(t, true);
				}
			}
		}
	}

	/* Check and update house and town values */
	UpdateHousesAndTowns();

	if (CheckSavegameVersion(43)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_INDUSTRY)) {
				switch (GetIndustryGfx(t)) {
					case GFX_POWERPLANT_SPARKS:
						SetIndustryAnimationState(t, GB(_m[t].m1, 2, 5));
						break;

					case GFX_OILWELL_ANIMATED_1:
					case GFX_OILWELL_ANIMATED_2:
					case GFX_OILWELL_ANIMATED_3:
						SetIndustryAnimationState(t, GB(_m[t].m1, 0, 2));
						break;

					case GFX_COAL_MINE_TOWER_ANIMATED:
					case GFX_COPPER_MINE_TOWER_ANIMATED:
					case GFX_GOLD_MINE_TOWER_ANIMATED:
						 SetIndustryAnimationState(t, _m[t].m1);
						 break;

					default: // No animation states to change
						break;
				}
			}
		}
	}

	if (CheckSavegameVersion(44)) {
		Vehicle *v;
		/* If we remove a station while cargo from it is still enroute, payment calculation will assume
		 * 0, 0 to be the source of the cargo, resulting in very high payments usually. v->source_xy
		 * stores the coordinates, preserving them even if the station is removed. However, if a game is loaded
		 * where this situation exists, the cargo-source information is lost. in this case, we set the source
		 * to the current tile of the vehicle to prevent excessive profits
		 */
		FOR_ALL_VEHICLES(v) {
			const CargoList::List *packets = v->cargo.Packets();
			for (CargoList::List::const_iterator it = packets->begin(); it != packets->end(); it++) {
				CargoPacket *cp = *it;
				cp->source_xy = Station::IsValidID(cp->source) ? Station::Get(cp->source)->xy : v->tile;
				cp->loaded_at_xy = cp->source_xy;
			}
			v->cargo.InvalidateCache();
		}

		/* Store position of the station where the goods come from, so there
		 * are no very high payments when stations get removed. However, if the
		 * station where the goods came from is already removed, the source
		 * information is lost. In that case we set it to the position of this
		 * station */
		Station *st;
		FOR_ALL_STATIONS(st) {
			for (CargoID c = 0; c < NUM_CARGO; c++) {
				GoodsEntry *ge = &st->goods[c];

				const CargoList::List *packets = ge->cargo.Packets();
				for (CargoList::List::const_iterator it = packets->begin(); it != packets->end(); it++) {
					CargoPacket *cp = *it;
					cp->source_xy = Station::IsValidID(cp->source) ? Station::Get(cp->source)->xy : st->xy;
					cp->loaded_at_xy = cp->source_xy;
				}
			}
		}
	}

	if (CheckSavegameVersion(45)) {
		Vehicle *v;
		/* Originally just the fact that some cargo had been paid for was
		 * stored to stop people cheating and cashing in several times. This
		 * wasn't enough though as it was cleared when the vehicle started
		 * loading again, even if it didn't actually load anything, so now the
		 * amount of cargo that has been paid for is stored. */
		FOR_ALL_VEHICLES(v) {
			const CargoList::List *packets = v->cargo.Packets();
			for (CargoList::List::const_iterator it = packets->begin(); it != packets->end(); it++) {
				CargoPacket *cp = *it;
				cp->paid_for = HasBit(v->vehicle_flags, 2);
			}
			ClrBit(v->vehicle_flags, 2);
			v->cargo.InvalidateCache();
		}
	}

	/* Buoys do now store the owner of the previous water tile, which can never
	 * be OWNER_NONE. So replace OWNER_NONE with OWNER_WATER. */
	if (CheckSavegameVersion(46)) {
		Station *st;
		FOR_ALL_STATIONS(st) {
			if (st->IsBuoy() && IsTileOwner(st->xy, OWNER_NONE) && TileHeight(st->xy) == 0) SetTileOwner(st->xy, OWNER_WATER);
		}
	}

	if (CheckSavegameVersion(50)) {
		Vehicle *v;
		/* Aircraft units changed from 8 mph to 1 km/h */
		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_AIRCRAFT && v->subtype <= AIR_AIRCRAFT) {
				const AircraftVehicleInfo *avi = AircraftVehInfo(v->engine_type);
				v->cur_speed *= 129;
				v->cur_speed /= 10;
				v->max_speed = avi->max_speed;
				v->acceleration = avi->acceleration;
			}
		}
	}

	if (CheckSavegameVersion(49)) FOR_ALL_COMPANIES(c) c->face = ConvertFromOldCompanyManagerFace(c->face);

	if (CheckSavegameVersion(52)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsStatueTile(t)) {
				_m[t].m2 = CalcClosestTownFromTile(t)->index;
			}
		}
	}

	/* A setting containing the proportion of towns that grow twice as
	 * fast was added in version 54. From version 56 this is now saved in the
	 * town as cities can be built specifically in the scenario editor. */
	if (CheckSavegameVersion(56)) {
		Town *t;

		FOR_ALL_TOWNS(t) {
			if (_settings_game.economy.larger_towns != 0 && (t->index % _settings_game.economy.larger_towns) == 0) {
				t->larger_town = true;
			}
		}
	}

	if (CheckSavegameVersion(57)) {
		Vehicle *v;
		/* Added a FIFO queue of vehicles loading at stations */
		FOR_ALL_VEHICLES(v) {
			if ((v->type != VEH_TRAIN || IsFrontEngine(v)) &&  // for all locs
					!(v->vehstatus & (VS_STOPPED | VS_CRASHED)) && // not stopped or crashed
					v->current_order.IsType(OT_LOADING)) {         // loading
				Station::Get(v->last_station_visited)->loading_vehicles.push_back(v);

				/* The loading finished flag is *only* set when actually completely
				 * finished. Because the vehicle is loading, it is not finished. */
				ClrBit(v->vehicle_flags, VF_LOADING_FINISHED);
			}
		}
	} else if (CheckSavegameVersion(59)) {
		/* For some reason non-loading vehicles could be in the station's loading vehicle list */

		Station *st;
		FOR_ALL_STATIONS(st) {
			std::list<Vehicle *>::iterator iter;
			for (iter = st->loading_vehicles.begin(); iter != st->loading_vehicles.end();) {
				Vehicle *v = *iter;
				iter++;
				if (!v->current_order.IsType(OT_LOADING)) st->loading_vehicles.remove(v);
			}
		}
	}

	if (CheckSavegameVersion(58)) {
		/* Setting difficulty number_industries other than zero get bumped to +1
		 * since a new option (very low at position1) has been added */
		if (_settings_game.difficulty.number_industries > 0) {
			_settings_game.difficulty.number_industries++;
		}

		/* Same goes for number of towns, although no test is needed, just an increment */
		_settings_game.difficulty.number_towns++;
	}

	if (CheckSavegameVersion(64)) {
		/* copy the signal type/variant and move signal states bits */
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_RAILWAY) && HasSignals(t)) {
				SetSignalStates(t, GB(_m[t].m2, 4, 4));
				SetSignalVariant(t, INVALID_TRACK, GetSignalVariant(t, TRACK_X));
				SetSignalType(t, INVALID_TRACK, GetSignalType(t, TRACK_X));
				ClrBit(_m[t].m2, 7);
			}
		}
	}

	if (CheckSavegameVersion(69)) {
		/* In some old savegames a bit was cleared when it should not be cleared */
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type != VEH_ROAD) continue;
			RoadVehicle *rv = (RoadVehicle *)v;
			if (rv->state == 250 || rv->state == 251) {
				SetBit(rv->state, RVS_IS_STOPPING);
			}
		}
	}

	if (CheckSavegameVersion(70)) {
		/* Added variables to support newindustries */
		Industry *i;
		FOR_ALL_INDUSTRIES(i) i->founder = OWNER_NONE;
	}

	/* From version 82, old style canals (above sealevel (0), WATER owner) are no longer supported.
	    Replace the owner for those by OWNER_NONE. */
	if (CheckSavegameVersion(82)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_WATER) &&
					GetWaterTileType(t) == WATER_TILE_CLEAR &&
					GetTileOwner(t) == OWNER_WATER &&
					TileHeight(t) != 0) {
				SetTileOwner(t, OWNER_NONE);
			}
		}
	}

	/*
	 * Add the 'previous' owner to the ship depots so we can reset it with
	 * the correct values when it gets destroyed. This prevents that
	 * someone can remove canals owned by somebody else and it prevents
	 * making floods using the removal of ship depots.
	 */
	if (CheckSavegameVersion(83)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_WATER) && IsShipDepot(t)) {
				_m[t].m4 = (TileHeight(t) == 0) ? OWNER_WATER : OWNER_NONE;
			}
		}
	}

	if (CheckSavegameVersion(74)) {
		Station *st;
		FOR_ALL_STATIONS(st) {
			for (CargoID c = 0; c < NUM_CARGO; c++) {
				st->goods[c].last_speed = 0;
				if (st->goods[c].cargo.Count() != 0) SetBit(st->goods[c].acceptance_pickup, GoodsEntry::PICKUP);
			}
		}
	}

	if (CheckSavegameVersion(78)) {
		Industry *i;
		uint j;
		FOR_ALL_INDUSTRIES(i) {
			const IndustrySpec *indsp = GetIndustrySpec(i->type);
			for (j = 0; j < lengthof(i->produced_cargo); j++) {
				i->produced_cargo[j] = indsp->produced_cargo[j];
			}
			for (j = 0; j < lengthof(i->accepts_cargo); j++) {
				i->accepts_cargo[j] = indsp->accepts_cargo[j];
			}
		}
	}

	/* Before version 81, the density of grass was always stored as zero, and
	 * grassy trees were always drawn fully grassy. Furthermore, trees on rough
	 * land used to have zero density, now they have full density. Therefore,
	 * make all grassy/rough land trees have a density of 3. */
	if (CheckSavegameVersion(81)) {
		for (TileIndex t = 0; t < map_size; t++) {
			if (GetTileType(t) == MP_TREES) {
				TreeGround groundType = GetTreeGround(t);
				if (groundType != TREE_GROUND_SNOW_DESERT) SetTreeGroundDensity(t, groundType, 3);
			}
		}
	}


	if (CheckSavegameVersion(93)) {
		/* Rework of orders. */
		Order *order;
		FOR_ALL_ORDERS(order) order->ConvertFromOldSavegame();

		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->orders.list != NULL && v->orders.list->GetFirstOrder() != NULL && v->orders.list->GetFirstOrder()->IsType(OT_NOTHING)) {
				v->orders.list->FreeChain();
				v->orders.list = NULL;
			}

			v->current_order.ConvertFromOldSavegame();
			if (v->type == VEH_ROAD && v->IsPrimaryVehicle() && v->FirstShared() == v) {
				FOR_VEHICLE_ORDERS(v, order) order->SetNonStopType(ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
			}
		}
	} else if (CheckSavegameVersion(94)) {
		/* Unload and transfer are now mutual exclusive. */
		Order *order;
		FOR_ALL_ORDERS(order) {
			if ((order->GetUnloadType() & (OUFB_UNLOAD | OUFB_TRANSFER)) == (OUFB_UNLOAD | OUFB_TRANSFER)) {
				order->SetUnloadType(OUFB_TRANSFER);
				order->SetLoadType(OLFB_NO_LOAD);
			}
		}

		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if ((v->current_order.GetUnloadType() & (OUFB_UNLOAD | OUFB_TRANSFER)) == (OUFB_UNLOAD | OUFB_TRANSFER)) {
				v->current_order.SetUnloadType(OUFB_TRANSFER);
				v->current_order.SetLoadType(OLFB_NO_LOAD);
			}
		}
	}

	if (CheckSavegameVersion(84)) {
		/* Update go to buoy orders because they are just waypoints */
		Order *order;
		FOR_ALL_ORDERS(order) {
			if (order->IsType(OT_GOTO_STATION) && Station::Get(order->GetDestination())->IsBuoy()) {
				order->SetLoadType(OLF_LOAD_IF_POSSIBLE);
				order->SetUnloadType(OUF_UNLOAD_IF_POSSIBLE);
			}
		}

		/* Set all share owners to INVALID_COMPANY for
		 * 1) all inactive companies
		 *     (when inactive companies were stored in the savegame - TTD, TTDP and some
		 *      *really* old revisions of OTTD; else it is already set in InitializeCompanies())
		 * 2) shares that are owned by inactive companies or self
		 *     (caused by cheating clients in earlier revisions) */
		FOR_ALL_COMPANIES(c) {
			for (uint i = 0; i < 4; i++) {
				CompanyID company = c->share_owners[i];
				if (company == INVALID_COMPANY) continue;
				if (!Company::IsValidID(company) || company == c->index) c->share_owners[i] = INVALID_COMPANY;
			}
		}
	}

	if (CheckSavegameVersion(86)) {
		for (TileIndex t = 0; t < map_size; t++) {
			/* Move river flag and update canals to use water class */
			if (IsTileType(t, MP_WATER)) {
				if (GetWaterClass(t) != WATER_CLASS_RIVER) {
					if (IsWater(t)) {
						Owner o = GetTileOwner(t);
						if (o == OWNER_WATER) {
							MakeWater(t);
						} else {
							MakeCanal(t, o, Random());
						}
					} else if (IsShipDepot(t)) {
						Owner o = (Owner)_m[t].m4; // Original water owner
						SetWaterClass(t, o == OWNER_WATER ? WATER_CLASS_SEA : WATER_CLASS_CANAL);
					}
				}
			}
		}

		/* Update locks, depots, docks and buoys to have a water class based
		 * on its neighbouring tiles. Done after river and canal updates to
		 * ensure neighbours are correct. */
		for (TileIndex t = 0; t < map_size; t++) {
			if (GetTileSlope(t, NULL) != SLOPE_FLAT) continue;

			if (IsTileType(t, MP_WATER) && IsLock(t)) SetWaterClassDependingOnSurroundings(t, false);
			if (IsTileType(t, MP_STATION) && (IsDock(t) || IsBuoy(t))) SetWaterClassDependingOnSurroundings(t, false);
		}
	}

	if (CheckSavegameVersion(87)) {
		for (TileIndex t = 0; t < map_size; t++) {
			/* skip oil rigs at borders! */
			if ((IsTileType(t, MP_WATER) || IsBuoyTile(t)) &&
					(TileX(t) == 0 || TileY(t) == 0 || TileX(t) == MapMaxX() - 1 || TileY(t) == MapMaxY() - 1)) {
				/* Some version 86 savegames have wrong water class at map borders (under buoy, or after removing buoy).
				 * This conversion has to be done before buoys with invalid owner are removed. */
				SetWaterClass(t, WATER_CLASS_SEA);
			}

			if (IsBuoyTile(t) || IsDriveThroughStopTile(t) || IsTileType(t, MP_WATER)) {
				Owner o = GetTileOwner(t);
				if (o < MAX_COMPANIES && !Company::IsValidID(o)) {
					_current_company = o;
					ChangeTileOwner(t, o, INVALID_OWNER);
				}
				if (IsBuoyTile(t)) {
					/* reset buoy owner to OWNER_NONE in the station struct
					 * (even if it is owned by active company) */
					GetStationByTile(t)->owner = OWNER_NONE;
				}
			} else if (IsTileType(t, MP_ROAD)) {
				/* works for all RoadTileType */
				for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
					/* update even non-existing road types to update tile owner too */
					Owner o = GetRoadOwner(t, rt);
					if (o < MAX_COMPANIES && !Company::IsValidID(o)) SetRoadOwner(t, rt, OWNER_NONE);
				}
				if (IsLevelCrossing(t)) {
					if (!Company::IsValidID(GetTileOwner(t))) FixOwnerOfRailTrack(t);
				}
			} else if (IsPlainRailTile(t)) {
				if (!Company::IsValidID(GetTileOwner(t))) FixOwnerOfRailTrack(t);
			}
		}

		/* Convert old PF settings to new */
		if (_settings_game.pf.yapf.rail_use_yapf || CheckSavegameVersion(28)) {
			_settings_game.pf.pathfinder_for_trains = VPF_YAPF;
		} else {
			_settings_game.pf.pathfinder_for_trains = (_settings_game.pf.new_pathfinding_all ? VPF_NPF : VPF_NTP);
		}

		if (_settings_game.pf.yapf.road_use_yapf || CheckSavegameVersion(28)) {
			_settings_game.pf.pathfinder_for_roadvehs = VPF_YAPF;
		} else {
			_settings_game.pf.pathfinder_for_roadvehs = (_settings_game.pf.new_pathfinding_all ? VPF_NPF : VPF_OPF);
		}

		if (_settings_game.pf.yapf.ship_use_yapf) {
			_settings_game.pf.pathfinder_for_ships = VPF_YAPF;
		} else {
			_settings_game.pf.pathfinder_for_ships = (_settings_game.pf.new_pathfinding_all ? VPF_NPF : VPF_OPF);
		}
	}

	if (CheckSavegameVersion(88)) {
		/* Profits are now with 8 bit fract */
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			v->profit_this_year <<= 8;
			v->profit_last_year <<= 8;
			v->running_ticks = 0;
		}
	}

	if (CheckSavegameVersion(91)) {
		/* Increase HouseAnimationFrame from 5 to 7 bits */
		for (TileIndex t = 0; t < map_size; t++) {
			if (IsTileType(t, MP_HOUSE) && GetHouseType(t) >= NEW_HOUSE_OFFSET) {
				SetHouseAnimationFrame(t, GB(_m[t].m6, 3, 5));
			}
		}
	}

	if (CheckSavegameVersion(62)) {
		/* Remove all trams from savegames without tram support.
		 * There would be trams without tram track under causing crashes sooner or later. */
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_ROAD && v->First() == v &&
					HasBit(EngInfo(v->engine_type)->misc_flags, EF_ROAD_TRAM)) {
				if (_switch_mode_errorstr == INVALID_STRING_ID || _switch_mode_errorstr == STR_NEWGRF_COMPATIBLE_LOAD_WARNING) {
					_switch_mode_errorstr = STR_LOADGAME_REMOVED_TRAMS;
				}
				delete v;
			}
		}
	}

	if (CheckSavegameVersion(99)) {
		for (TileIndex t = 0; t < map_size; t++) {
			/* Set newly introduced WaterClass of industry tiles */
			if (IsTileType(t, MP_STATION) && IsOilRig(t)) {
				SetWaterClassDependingOnSurroundings(t, true);
			}
			if (IsTileType(t, MP_INDUSTRY)) {
				if ((GetIndustrySpec(GetIndustryType(t))->behaviour & INDUSTRYBEH_BUILT_ONWATER) != 0) {
					SetWaterClassDependingOnSurroundings(t, true);
				} else {
					SetWaterClass(t, WATER_CLASS_INVALID);
				}
			}

			/* Replace "house construction year" with "house age" */
			if (IsTileType(t, MP_HOUSE) && IsHouseCompleted(t)) {
				_m[t].m5 = Clamp(_cur_year - (_m[t].m5 + ORIGINAL_BASE_YEAR), 0, 0xFF);
			}
		}
	}

	/* Move the signal variant back up one bit for PBS. We don't convert the old PBS
	 * format here, as an old layout wouldn't work properly anyway. To be safe, we
	 * clear any possible PBS reservations as well. */
	if (CheckSavegameVersion(100)) {
		for (TileIndex t = 0; t < map_size; t++) {
			switch (GetTileType(t)) {
				case MP_RAILWAY:
					if (HasSignals(t)) {
						/* move the signal variant */
						SetSignalVariant(t, TRACK_UPPER, HasBit(_m[t].m2, 2) ? SIG_SEMAPHORE : SIG_ELECTRIC);
						SetSignalVariant(t, TRACK_LOWER, HasBit(_m[t].m2, 6) ? SIG_SEMAPHORE : SIG_ELECTRIC);
						ClrBit(_m[t].m2, 2);
						ClrBit(_m[t].m2, 6);
					}

					/* Clear PBS reservation on track */
					if (IsRailDepot(t) ||IsRailWaypoint(t)) {
						SetDepotWaypointReservation(t, false);
					} else {
						SetTrackReservation(t, TRACK_BIT_NONE);
					}
					break;

				case MP_ROAD: // Clear PBS reservation on crossing
					if (IsLevelCrossing(t)) SetCrossingReservation(t, false);
					break;

				case MP_STATION: // Clear PBS reservation on station
					if (IsRailwayStation(t)) SetRailwayStationReservation(t, false);
					break;

				case MP_TUNNELBRIDGE: // Clear PBS reservation on tunnels/birdges
					if (GetTunnelBridgeTransportType(t) == TRANSPORT_RAIL) SetTunnelBridgeReservation(t, false);
					break;

				default: break;
			}
		}
	}

	/* Reserve all tracks trains are currently on. */
	if (CheckSavegameVersion(101)) {
		Vehicle *u;
		FOR_ALL_VEHICLES(u) {
			if (u->type == VEH_TRAIN) {
				Train *v = (Train *)u;
				if ((v->track & TRACK_BIT_WORMHOLE) == TRACK_BIT_WORMHOLE) {
					TryReserveRailTrack(v->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(v->tile)));
				} else if ((v->track & TRACK_BIT_MASK) != TRACK_BIT_NONE) {
					TryReserveRailTrack(v->tile, TrackBitsToTrack(v->track));
				}
			}
		}
	}

	if (CheckSavegameVersion(102)) {
		for (TileIndex t = 0; t < map_size; t++) {
			/* Now all crossings should be in correct state */
			if (IsLevelCrossingTile(t)) UpdateLevelCrossing(t, false);
		}
	}

	if (CheckSavegameVersion(103)) {
		/* Non-town-owned roads now store the closest town */
		UpdateNearestTownForRoadTiles(false);

		/* signs with invalid owner left from older savegames */
		Sign *si;
		FOR_ALL_SIGNS(si) {
			if (si->owner != OWNER_NONE && !Company::IsValidID(si->owner)) si->owner = OWNER_NONE;
		}

		/* Station can get named based on an industry type, but the current ones
		 * are not, so mark them as if they are not named by an industry. */
		Station *st;
		FOR_ALL_STATIONS(st) {
			st->indtype = IT_INVALID;
		}
	}

	if (CheckSavegameVersion(104)) {
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			/* Set engine_type of shadow and rotor */
			if (v->type == VEH_AIRCRAFT && !IsNormalAircraft(v)) {
				v->engine_type = v->First()->engine_type;
			}
		}

		/* More companies ... */
		Company *c;
		FOR_ALL_COMPANIES(c) {
			if (c->bankrupt_asked == 0xFF) c->bankrupt_asked = 0xFFFF;
		}

		Engine *e;
		FOR_ALL_ENGINES(e) {
			if (e->company_avail == 0xFF) e->company_avail = 0xFFFF;
		}

		Town *t;
		FOR_ALL_TOWNS(t) {
			if (t->have_ratings == 0xFF) t->have_ratings = 0xFFFF;
			for (uint i = 8; i != MAX_COMPANIES; i++) t->ratings[i] = RATING_INITIAL;
		}
	}

	if (CheckSavegameVersion(112)) {
		for (TileIndex t = 0; t < map_size; t++) {
			/* Check for HQ bit being set, instead of using map accessor,
			 * since we've already changed it code-wise */
			if (IsTileType(t, MP_UNMOVABLE) && HasBit(_m[t].m5, 7)) {
				/* Move size and part identification of HQ out of the m5 attribute,
				 * on new locations */
				uint8 old_m5 = _m[t].m5;
				_m[t].m5 = UNMOVABLE_HQ;
				SetCompanyHQSize(t, GB(old_m5, 2, 3));
				SetCompanyHQSection(t, GB(old_m5, 0, 2));
			}
		}
	}

	if (CheckSavegameVersion(113)) {
		/* allow_town_roads is added, set it if town_layout wasn't TL_NO_ROADS */
		if (_settings_game.economy.town_layout == 0) { // was TL_NO_ROADS
			_settings_game.economy.allow_town_roads = false;
			_settings_game.economy.town_layout = TL_BETTER_ROADS;
		} else {
			_settings_game.economy.allow_town_roads = true;
			_settings_game.economy.town_layout = _settings_game.economy.town_layout - 1;
		}

		/* Initialize layout of all towns. Older versions were using different
		 * generator for random town layout, use it if needed. */
		Town *t;
		FOR_ALL_TOWNS(t) {
			if (_settings_game.economy.town_layout != TL_RANDOM) {
				t->layout = _settings_game.economy.town_layout;
				continue;
			}

			/* Use old layout randomizer code */
			byte layout = TileHash(TileX(t->xy), TileY(t->xy)) % 6;
			switch (layout) {
				default: break;
				case 5: layout = 1; break;
				case 0: layout = 2; break;
			}
			t->layout = layout - 1;
		}
	}

	if (CheckSavegameVersion(114)) {
		/* There could be (deleted) stations with invalid owner, set owner to OWNER NONE.
		 * The conversion affects oil rigs and buoys too, but it doesn't matter as
		 * they have st->owner == OWNER_NONE already. */
		Station *st;
		FOR_ALL_STATIONS(st) {
			if (!Company::IsValidID(st->owner)) st->owner = OWNER_NONE;
		}

		/* Give owners to waypoints, based on rail tracks it is sitting on.
		 * If none is available, specify OWNER_NONE.
		 * This code was in CheckSavegameVersion(101) in the past, but in some cases,
		 * the owner of waypoints could be incorrect. */
		Waypoint *wp;
		FOR_ALL_WAYPOINTS(wp) {
			Owner owner = IsTileType(wp->xy, MP_RAILWAY) ? GetTileOwner(wp->xy) : OWNER_NONE;
			wp->owner = Company::IsValidID(owner) ? owner : OWNER_NONE;
		}
	}

	/* Trains could now stop in a specific location. */
	if (CheckSavegameVersion(117)) {
		Order *o;
		FOR_ALL_ORDERS(o) {
			if (o->IsType(OT_GOTO_STATION)) o->SetStopLocation(OSL_PLATFORM_FAR_END);
		}
	}

	AfterLoadLabelMaps();

	GamelogPrintDebug(1);

	bool ret = InitializeWindowsAndCaches();
	/* Restore the signals */
	ResetSignalHandlers();
	return ret;
}

/** Reload all NewGRF files during a running game. This is a cut-down
 * version of AfterLoadGame().
 * XXX - We need to reset the vehicle position hash because with a non-empty
 * hash AfterLoadVehicles() will loop infinitely. We need AfterLoadVehicles()
 * to recalculate vehicle data as some NewGRF vehicle sets could have been
 * removed or added and changed statistics */
void ReloadNewGRFData()
{
	/* reload grf data */
	GfxLoadSprites();
	LoadStringWidthTable();
	ResetEconomy();
	/* reload vehicles */
	ResetVehiclePosHash();
	AfterLoadVehicles(false);
	StartupEngines();
	SetCachedEngineCounts();
	/* update station and waypoint graphics */
	AfterLoadWaypoints();
	AfterLoadStations();
	/* Check and update house and town values */
	UpdateHousesAndTowns();
	/* Update livery selection windows */
	for (CompanyID i = COMPANY_FIRST; i < MAX_COMPANIES; i++) InvalidateWindowData(WC_COMPANY_COLOUR, i, _loaded_newgrf_features.has_2CC);
	/* redraw the whole screen */
	MarkWholeScreenDirty();
	CheckTrainsLengths();
}