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
|
#include "stdafx.h"
#include "ttd.h"
#include "table/strings.h"
#include "map.h"
#include "viewport.h"
#include "command.h"
typedef struct TerraformerHeightMod {
TileIndex tile;
byte height;
} TerraformerHeightMod;
typedef struct TerraformerState {
int height[4];
uint32 flags;
int direction;
int modheight_count;
int tile_table_count;
int32 cost;
TileIndex *tile_table;
TerraformerHeightMod *modheight;
} TerraformerState;
static int TerraformAllowTileProcess(TerraformerState *ts, TileIndex tile)
{
TileIndex *t;
int count;
if (TileX(tile) == MapMaxX() || TileY(tile) == MapMaxY())
return -1;
t = ts->tile_table;
for(count = ts->tile_table_count; count != 0; count--,t++) {
if (*t == tile)
return 0;
}
return 1;
}
static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)
{
TerraformerHeightMod *mod = ts->modheight;
int count;
for(count = ts->modheight_count; count != 0; count--, mod++) {
if (mod->tile == tile)
return mod->height;
}
return TileHeight(tile);
}
static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)
{
int count;
TileIndex *t;
count = ts->tile_table_count;
if (count >= 625)
return;
for(t = ts->tile_table; count != 0; count--,t++) {
if (*t == tile)
return;
}
ts->tile_table[ts->tile_table_count++] = tile;
}
static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)
{
TerraformAddDirtyTile(ts, tile+TILE_XY(0,-1));
TerraformAddDirtyTile(ts, tile+TILE_XY(-1,-1));
TerraformAddDirtyTile(ts, tile+TILE_XY(-1,0));
TerraformAddDirtyTile(ts, tile);
}
static int TerraformProc(TerraformerState *ts, uint tile, int mode)
{
int r;
int32 ret;
assert(tile < MapSize());
if ((r=TerraformAllowTileProcess(ts, tile)) <= 0)
return r;
if (IsTileType(tile, MP_RAILWAY)) {
static const byte _railway_modes[4] = {8, 0x10, 4, 0x20};
static const byte _railway_dangslopes[4] = {0xd, 0xe, 7, 0xb};
static const byte _railway_dangslopes2[4] = {0x2, 0x1, 0x8, 0x4};
// Nothing could be built at the steep slope - this avoids a bug
// when you have a single diagonal track in one corner on a
// basement and then you raise/lower the other corner.
int tileh = GetTileSlope(tile, NULL) & 0xF;
if (tileh == _railway_dangslopes[mode] ||
tileh == _railway_dangslopes2[mode]) {
_terraform_err_tile = tile;
_error_message = STR_1008_MUST_REMOVE_RAILROAD_TRACK;
return -1;
}
// If we have a single diagonal track there, the other side of
// tile can be terraformed.
if ((_map5[tile]&~0x40) == _railway_modes[mode])
return 0;
}
ret = DoCommandByTile(tile, 0,0, ts->flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);
if (ret == CMD_ERROR) {
_terraform_err_tile = tile;
return -1;
}
ts->cost += ret;
if (ts->tile_table_count >= 625)
return -1;
ts->tile_table[ts->tile_table_count++] = tile;
return 0;
}
static bool TerraformTileHeight(TerraformerState *ts, uint tile, int height)
{
int nh;
TerraformerHeightMod *mod;
int count;
assert(tile < MapSize());
if (height < 0) {
_error_message = STR_1003_ALREADY_AT_SEA_LEVEL;
return false;
}
_error_message = STR_1004_TOO_HIGH;
if (height > 0xF)
return false;
nh = TerraformGetHeightOfTile(ts, tile);
if (nh < 0 || height == nh)
return false;
if (TerraformProc(ts, tile, 0)<0)
return false;
if (TerraformProc(ts, tile + TILE_XY(0,-1), 1)<0)
return false;
if (TerraformProc(ts, tile + TILE_XY(-1,-1), 2)<0)
return false;
if (TerraformProc(ts, tile + TILE_XY(-1,0), 3)<0)
return false;
mod = ts->modheight;
count = ts->modheight_count;
for(;;) {
if (count == 0) {
if (ts->modheight_count >= 576)
return false;
ts->modheight_count++;
break;
}
if (mod->tile == (TileIndex)tile)
break;
mod++;
count--;
}
mod->tile = (TileIndex)tile;
mod->height = (byte)height;
ts->cost += _price.terraform;
{
int direction = ts->direction, r;
const TileIndexDiffC *ttm;
static const TileIndexDiffC _terraform_tilepos[] = {
{ 1, 0},
{-2, 0},
{ 1, 1},
{ 0, -2}
};
for(ttm = _terraform_tilepos; ttm != endof(_terraform_tilepos); ttm++) {
tile += ToTileIndexDiff(*ttm);
r = TerraformGetHeightOfTile(ts, tile);
if (r != height && r-direction != height && r+direction != height) {
if (!TerraformTileHeight(ts, tile, r+direction))
return false;
}
}
}
return true;
}
/* Terraform land
* p1 - corners
* p2 - direction
*/
int32 CmdTerraformLand(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
TerraformerState ts;
uint tile;
int direction;
TerraformerHeightMod modheight_data[576];
TileIndex tile_table_data[625];
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
_error_message = INVALID_STRING_ID;
_terraform_err_tile = 0;
ts.direction = direction = p2 ? 1 : -1;
ts.flags = flags;
ts.modheight_count = ts.tile_table_count = 0;
ts.cost = 0;
ts.modheight = modheight_data;
ts.tile_table = tile_table_data;
tile = TILE_FROM_XY(x,y);
if (p1 & 1) {
if (!TerraformTileHeight(&ts, tile+TILE_XY(1,0),
TileHeight(tile + TILE_XY(1, 0)) + direction))
return CMD_ERROR;
}
if (p1 & 2) {
if (!TerraformTileHeight(&ts, tile+TILE_XY(1,1),
TileHeight(tile + TILE_XY(1, 1)) + direction))
return CMD_ERROR;
}
if (p1 & 4) {
if (!TerraformTileHeight(&ts, tile+TILE_XY(0,1),
TileHeight(tile + TILE_XY(0, 1)) + direction))
return CMD_ERROR;
}
if (p1 & 8) {
if (!TerraformTileHeight(&ts, tile+TILE_XY(0,0),
TileHeight(tile + TILE_XY(0, 0)) + direction))
return CMD_ERROR;
}
if (direction == -1) {
/* Check if tunnel would take damage */
int count;
TileIndex *ti = ts.tile_table;
for(count = ts.tile_table_count; count != 0; count--, ti++) {
uint z, t;
uint tile = *ti;
z = TerraformGetHeightOfTile(&ts, tile + TILE_XY(0,0));
t = TerraformGetHeightOfTile(&ts, tile + TILE_XY(1,0));
if (t <= z) z = t;
t = TerraformGetHeightOfTile(&ts, tile + TILE_XY(1,1));
if (t <= z) z = t;
t = TerraformGetHeightOfTile(&ts, tile + TILE_XY(0,1));
if (t <= z) z = t;
if (!CheckTunnelInWay(tile, z*8))
return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);
}
}
if (flags & DC_EXEC) {
/* Clear the landscape at the tiles */
{
int count;
TileIndex *ti = ts.tile_table;
for(count = ts.tile_table_count; count != 0; count--, ti++) {
DoCommandByTile(*ti, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
}
}
/* change the height */
{
int count;
TerraformerHeightMod *mod;
uint til;
mod = ts.modheight;
for(count = ts.modheight_count; count != 0; count--, mod++) {
til = mod->tile;
SetTileHeight(til, mod->height);
TerraformAddDirtyTileAround(&ts, til);
}
}
/* finally mark the dirty tiles dirty */
{
int count;
TileIndex *ti = ts.tile_table;
for(count = ts.tile_table_count; count != 0; count--, ti++) {
MarkTileDirtyByTile(*ti);
}
}
}
return ts.cost;
}
/*
* p1 - start
*/
int32 CmdLevelLand(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)
{
int size_x, size_y;
int sx, sy;
uint h, curh;
uint tile;
int32 ret, cost, money;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
// remember level height
h = TileHeight(p1);
ex >>= 4; ey >>= 4;
// make sure sx,sy are smaller than ex,ey
sx = TileX(p1);
sy = TileY(p1);
if (ex < sx) intswap(ex, sx);
if (ey < sy) intswap(ey, sy);
tile = TILE_XY(sx,sy);
size_x = ex-sx+1;
size_y = ey-sy+1;
money = GetAvailableMoneyForCommand();
cost = 0;
BEGIN_TILE_LOOP(tile2, size_x, size_y, tile)
curh = TileHeight(tile2);
while (curh != h) {
ret = DoCommandByTile(tile2, 8, (curh > h)?0:1, flags & ~DC_EXEC, CMD_TERRAFORM_LAND);
if (ret == CMD_ERROR) break;
cost += ret;
if (flags & DC_EXEC) {
if ((money -= ret) < 0) {
_additional_cash_required = ret;
return cost - ret;
}
DoCommandByTile(tile2, 8, (curh > h)?0:1, flags, CMD_TERRAFORM_LAND);
}
curh += (curh > h) ? -1 : 1;
}
END_TILE_LOOP(tile2, size_x, size_y, tile)
if (cost == 0) return CMD_ERROR;
return cost;
}
/* Purchase a land area
* p1 = unused
* p2 = unused
*/
int32 CmdPurchaseLandArea(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
uint tile;
int32 cost;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
tile = TILE_FROM_XY(x,y);
if (!EnsureNoVehicle(tile))
return CMD_ERROR;
if (IsTileType(tile, MP_UNMOVABLE) &&
_map5[tile] == 3 &&
_map_owner[tile] == _current_player)
return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);
cost = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (cost == CMD_ERROR)
return CMD_ERROR;
if (flags & DC_EXEC) {
ModifyTile(tile,
MP_SETTYPE(MP_UNMOVABLE) | MP_MAPOWNER_CURRENT | MP_MAP5,
3 /* map5 */
);
}
return cost + _price.purchase_land * 10;
}
static int32 ClearTile_Clear(uint tile, byte flags)
{
static const int32 * _clear_price_table[] = {
NULL,
&_price.clear_1, &_price.clear_1,&_price.clear_1,
&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,
&_price.clear_2,&_price.clear_2,&_price.clear_2,&_price.clear_2,
&_price.clear_3,&_price.clear_3,&_price.clear_3,&_price.clear_3,
&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,
&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,&_price.purchase_land,
&_price.clear_2,&_price.clear_2,&_price.clear_2,&_price.clear_2,
};
const int32 *price = _clear_price_table[_map5[tile] & 0x1F];
if (flags & DC_EXEC)
DoClearSquare(tile);
if (price == NULL)
return 0;
return *price;
}
int32 CmdSellLandArea(int x, int y, uint32 flags, uint32 p1, uint32 p2)
{
uint tile;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
tile = TILE_FROM_XY(x,y);
if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER)
return CMD_ERROR;
if (!EnsureNoVehicle(tile))
return CMD_ERROR;
if (flags & DC_EXEC)
DoClearSquare(tile);
return - _price.purchase_land*2;
}
#include "table/clear_land.h"
void DrawClearLandTile(TileInfo *ti, byte set)
{
DrawGroundSprite(0xF54 + _tileh_to_sprite[ti->tileh] + set * 19);
}
void DrawHillyLandTile(TileInfo *ti)
{
if (ti->tileh != 0) {
DrawGroundSprite(0xFA0 + _tileh_to_sprite[ti->tileh]);
} else {
DrawGroundSprite(_landscape_clear_sprites[((ti->x^ti->y) >> 4) & 0x7]);
}
}
void DrawClearLandFence(TileInfo *ti, byte img)
{
byte z = ti->z;
if (ti->tileh & 2) {
z += 8;
if (ti->tileh == 0x17)
z += 8;
}
if (img & 0x38) {
DrawGroundSpriteAt(_clear_land_fence_sprites_1[((img >> 3) & 7) - 1] + _fence_mod_by_tileh[ti->tileh], ti->x, ti->y, z);
}
if (img & 0x7) {
DrawGroundSpriteAt(_clear_land_fence_sprites_1[(img & 7) - 1] + _fence_mod_by_tileh_2[ti->tileh], ti->x, ti->y, z);
}
}
static void DrawTile_Clear(TileInfo *ti)
{
switch((ti->map5 & (7<<2)) >> 2) {
case 0:
DrawClearLandTile(ti, (ti->map5 & 3));
break;
case 1:
DrawHillyLandTile(ti);
break;
case 2:
DrawGroundSprite(0xFB7 + _tileh_to_sprite[ti->tileh]);
break;
case 3:
DrawGroundSprite( _clear_land_sprites_1[_map3_lo[ti->tile]&0xF] + _tileh_to_sprite[ti->tileh]);
break;
case 4:
DrawGroundSprite( _clear_land_sprites_2[ti->map5&3] + _tileh_to_sprite[ti->tileh]);
break;
case 5:
DrawGroundSprite( _clear_land_sprites_3[ti->map5&3] + _tileh_to_sprite[ti->tileh]);
break;
}
DrawClearLandFence(ti, _map3_hi[ti->tile] >> 2);
}
static uint GetSlopeZ_Clear(TileInfo *ti)
{
return GetPartialZ(ti->x & 0xF, ti->y & 0xF, ti->tileh) + ti->z;
}
static uint GetSlopeTileh_Clear(TileInfo *ti)
{
return ti->tileh;
}
static void GetAcceptedCargo_Clear(uint tile, AcceptedCargo ac)
{
/* unused */
}
static void AnimateTile_Clear(uint tile)
{
/* unused */
}
void TileLoopClearHelper(uint tile)
{
byte img_1, img_2;
static byte img_by_map5[8] = { 0,0,0,2, 1,1,0,0, };
uint dirty = -1;
img_1 = 0;
if (IsTileType(tile, MP_CLEAR)) {
img_1 = img_by_map5[(_map5[tile] & 0x1C) >> 2];
} else if (IsTileType(tile, MP_TREES) && (_map2[tile] & 0x30) == 0x20) {
img_1 = 1;
}
img_2 = 0;
if (IsTileType(TILE_ADDXY(tile, 1, 0), MP_CLEAR)) {
img_2 = img_by_map5[(_map5[TILE_ADDXY(tile, 1, 0)] & 0x1C) >> 2];
} else if (IsTileType(TILE_ADDXY(tile, 1, 0), MP_TREES) && (_map2[TILE_ADDXY(tile, 1, 0)] & 0x30) == 0x20) {
img_2 = 1;
}
if (!(_map3_hi[tile] & 0xE0)) {
if ( (img_1&2) != (img_2&2) ) {
_map3_hi[tile] |= 3 << 5;
dirty = tile;
}
} else {
if (img_1 == 1 && img_2 == 1) {
_map3_hi[tile] &= ~(3 << 5);
dirty = tile;
}
}
img_2 = 0;
if (IsTileType(TILE_ADDXY(tile, 0, 1), MP_CLEAR)) {
img_2 = img_by_map5[(_map5[TILE_ADDXY(tile, 0, 1)] & 0x1C) >> 2];
} else if (IsTileType(TILE_ADDXY(tile, 0, 1), MP_TREES) && (_map2[TILE_ADDXY(tile, 0, 1)] & 0x30) == 0x20) {
img_2 = 1;
}
if (!(_map3_hi[tile] & 0x1C)) {
if ( (img_1&2) != (img_2&2) ) {
_map3_hi[tile] |= 3 << 2;
dirty = tile;
}
} else {
if (img_1 == 1 && img_2 == 1) {
_map3_hi[tile] &= ~(3 << 2);
dirty = tile;
}
}
if (dirty != -1)
MarkTileDirtyByTile(dirty);
}
/* convert into snowy tiles */
static void TileLoopClearAlps(uint tile)
{
int k;
byte m5,tmp;
/* distance from snow line, in steps of 8 */
k = GetTileZ(tile) - _opt.snow_line;
m5 = _map5[tile] & 0x1C;
tmp = _map5[tile] & 3;
if (k < -8) {
/* snow_m2_down */
if (m5 != 0x10)
return;
if (tmp == 0)
m5 = 3;
} else if (k == -8) {
/* snow_m1 */
if (m5 != 0x10) {
m5 = 0x10;
} else if (tmp != 0) {
m5 = (tmp - 1) + 0x10;
} else
return;
} else if (k < 8) {
/* snow_0 */
if (m5 != 0x10) {
m5 = 0x10;
} else if (tmp != 1) {
m5 = 1;
if (tmp != 0)
m5 = tmp - 1;
m5 += 0x10;
} else
return;
} else if (k == 8) {
/* snow_p1 */
if (m5 != 0x10) {
m5 = 0x10;
} else if (tmp != 2) {
m5 = 2;
if (tmp <= 2)
m5 = tmp + 1;
m5 += 0x10;
} else
return;
} else {
/* snow_p2_up */
if (m5 != 0x10) {
m5 = 0x10;
} else if (tmp != 3) {
m5 = tmp + 1 + 0x10;
} else
return;
}
_map5[tile] = m5;
MarkTileDirtyByTile(tile);
}
static void TileLoopClearDesert(uint tile)
{
if ( (_map5[tile] & 0x1C) == 0x14)
return;
if (GetMapExtraBits(tile) == 1) {
_map5[tile] = 0x17;
} else {
if (GetMapExtraBits(tile+TILE_XY(1,0)) != 1 &&
GetMapExtraBits(tile+TILE_XY(-1,0)) != 1 &&
GetMapExtraBits(tile+TILE_XY(0,1)) != 1 &&
GetMapExtraBits(tile+TILE_XY(0,-1)) != 1)
return;
_map5[tile] = 0x15;
}
MarkTileDirtyByTile(tile);
}
static void TileLoop_Clear(uint tile)
{
byte m5,m3;
TileLoopClearHelper(tile);
if (_opt.landscape == LT_DESERT) {
TileLoopClearDesert(tile);
} else if (_opt.landscape == LT_HILLY) {
TileLoopClearAlps(tile);
}
m5 = _map5[tile];
if ( (m5 & 0x1C) == 0x10 || (m5 & 0x1C) == 0x14)
return;
if ( (m5 & 0x1C) != 0xC) {
if ( (m5 & 3) == 3)
return;
if (_game_mode != GM_EDITOR) {
m5 += 0x20;
if (m5 >= 0x20) {
// Didn't overflow
_map5[tile] = m5;
return;
}
/* did overflow, so continue */
} else {
m5 = ((byte)Random() > 21) ? (2) : (6);
}
m5++;
} else if (_game_mode != GM_EDITOR) {
/* handle farm field */
m5 += 0x20;
if (m5 >= 0x20) {
// Didn't overflow
_map5[tile] = m5;
return;
}
/* overflowed */
m3 = _map3_lo[tile] + 1;
assert( (m3 & 0xF) != 0);
if ( (m3 & 0xF) >= 9) /* NOTE: will not work properly if m3&0xF == 0xF */
m3 &= ~0xF;
_map3_lo[tile] = m3;
}
_map5[tile] = m5;
MarkTileDirtyByTile(tile);
}
void GenerateClearTile(void)
{
int i,j;
uint tile,tile_new;
uint32 r;
/* add hills */
i = (Random() & 0x3FF) | 0x400;
do {
tile = TILE_MASK(Random());
if (IsTileType(tile, MP_CLEAR))
_map5[tile] = (byte)((_map5[tile] & ~(3<<2)) | (1<<2));
} while (--i);
/* add grey squares */
i = (Random() & 0x7F) | 0x80;
do {
r = Random();
tile = TILE_MASK(r);
if (IsTileType(tile, MP_CLEAR)) {
j = ((r >> 16) & 0xF) + 5;
for(;;) {
_map5[tile] = (byte)((_map5[tile] & ~(3<<2)) | (2<<2));
do {
if (--j == 0) goto get_out;
tile_new = tile + TileOffsByDir(Random() & 3);
} while (!IsTileType(tile_new, MP_CLEAR));
tile = tile_new;
}
get_out:;
}
} while (--i);
}
static void ClickTile_Clear(uint tile)
{
/* not used */
}
static uint32 GetTileTrackStatus_Clear(uint tile, TransportType mode)
{
return 0;
}
static const StringID _clear_land_str[4+8-1] = {
STR_080B_ROUGH_LAND,
STR_080A_ROCKS,
STR_080E_FIELDS,
STR_080F_SNOW_COVERED_LAND,
STR_0810_DESERT,
0,
0,
STR_080C_BARE_LAND,
STR_080D_GRASS,
STR_080D_GRASS,
STR_080D_GRASS,
};
static void GetTileDesc_Clear(uint tile, TileDesc *td)
{
int i = (_map5[tile]>>2) & 7;
if (i == 0)
i = (_map5[tile] & 3) + 8;
td->str = _clear_land_str[i - 1];
td->owner = _map_owner[tile];
}
static void ChangeTileOwner_Clear(uint tile, byte old_player, byte new_player)
{
return;
}
void InitializeClearLand(void)
{
_opt.snow_line = _patches.snow_line_height * 8;
}
const TileTypeProcs _tile_type_clear_procs = {
DrawTile_Clear, /* draw_tile_proc */
GetSlopeZ_Clear, /* get_slope_z_proc */
ClearTile_Clear, /* clear_tile_proc */
GetAcceptedCargo_Clear, /* get_accepted_cargo_proc */
GetTileDesc_Clear, /* get_tile_desc_proc */
GetTileTrackStatus_Clear, /* get_tile_track_status_proc */
ClickTile_Clear, /* click_tile_proc */
AnimateTile_Clear, /* animate_tile_proc */
TileLoop_Clear, /* tile_loop_clear */
ChangeTileOwner_Clear, /* change_tile_owner_clear */
NULL, /* get_produced_cargo_proc */
NULL, /* vehicle_enter_tile_proc */
NULL, /* vehicle_leave_tile_proc */
GetSlopeTileh_Clear, /* get_slope_tileh_proc */
};
|