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
|
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file newgrf_station.cpp Functions for dealing with station classes and custom stations. */
#include "stdafx.h"
#include "debug.h"
#include "station_base.h"
#include "waypoint_base.h"
#include "roadstop_base.h"
#include "newgrf_cargo.h"
#include "newgrf_station.h"
#include "newgrf_spritegroup.h"
#include "newgrf_sound.h"
#include "newgrf_railtype.h"
#include "town.h"
#include "newgrf_town.h"
#include "company_func.h"
#include "tunnelbridge_map.h"
#include "newgrf.h"
#include "newgrf_animation_base.h"
#include "newgrf_class_func.h"
template <typename Tspec, typename Tid, Tid Tmax>
/* static */ void NewGRFClass<Tspec, Tid, Tmax>::InsertDefaults()
{
/* Set up initial data */
classes[0].global_id = 'DFLT';
classes[0].name = STR_STATION_CLASS_DFLT;
classes[0].count = 1;
classes[0].spec = MallocT<StationSpec*>(1);
classes[0].spec[0] = NULL;
classes[1].global_id = 'WAYP';
classes[1].name = STR_STATION_CLASS_WAYP;
classes[1].count = 1;
classes[1].spec = MallocT<StationSpec*>(1);
classes[1].spec[0] = NULL;
}
INSTANTIATE_NEWGRF_CLASS_METHODS(StationClass, StationSpec, StationClassID, STAT_CLASS_MAX)
static const uint MAX_SPECLIST = 255;
enum TriggerArea {
TA_TILE,
TA_PLATFORM,
TA_WHOLE,
};
struct ETileArea : TileArea {
ETileArea(const BaseStation *st, TileIndex tile, TriggerArea ta)
{
switch (ta) {
default: NOT_REACHED();
case TA_TILE:
this->tile = tile;
this->w = 1;
this->h = 1;
break;
case TA_PLATFORM: {
TileIndex start, end;
Axis axis = GetRailStationAxis(tile);
TileIndexDiff delta = TileOffsByDiagDir(AxisToDiagDir(axis));
for (end = tile; IsRailStationTile(end + delta) && IsCompatibleTrainStationTile(tile, end + delta); end += delta) { /* Nothing */ }
for (start = tile; IsRailStationTile(start - delta) && IsCompatibleTrainStationTile(tile, start - delta); start -= delta) { /* Nothing */ }
this->tile = start;
this->w = TileX(end) - TileX(start) + 1;
this->h = TileY(end) - TileY(start) + 1;
break;
}
case TA_WHOLE:
st->GetTileArea(this, Station::IsExpected(st) ? STATION_RAIL : STATION_WAYPOINT);
break;
}
}
};
/**
* Evaluate a tile's position within a station, and return the result in a bit-stuffed format.
* if not centered: .TNLcCpP, if centered: .TNL..CP
* - T = Tile layout number (#GetStationGfx)
* - N = Number of platforms
* - L = Length of platforms
* - C = Current platform number from start, c = from end
* - P = Position along platform from start, p = from end
* .
* if centered, C/P start from the centre and c/p are not available.
* @return Platform information in bit-stuffed format.
*/
uint32 GetPlatformInfo(Axis axis, byte tile, int platforms, int length, int x, int y, bool centred)
{
uint32 retval = 0;
if (axis == AXIS_X) {
Swap(platforms, length);
Swap(x, y);
}
if (centred) {
x -= platforms / 2;
y -= length / 2;
x = Clamp(x, -8, 7);
y = Clamp(x, -8, 7);
SB(retval, 0, 4, y & 0xF);
SB(retval, 4, 4, x & 0xF);
} else {
SB(retval, 0, 4, min(15, y));
SB(retval, 4, 4, min(15, length - y - 1));
SB(retval, 8, 4, min(15, x));
SB(retval, 12, 4, min(15, platforms - x - 1));
}
SB(retval, 16, 4, min(15, length));
SB(retval, 20, 4, min(15, platforms));
SB(retval, 24, 4, tile);
return retval;
}
/**
* Find the end of a railway station, from the \a tile, in the direction of \a delta.
* @param tile Start tile.
* @param delta Movement direction.
* @param check_type Stop when the custom station type changes.
* @param check_axis Stop when the station direction changes.
* @return Found end of the railway station.
*/
static TileIndex FindRailStationEnd(TileIndex tile, TileIndexDiff delta, bool check_type, bool check_axis)
{
byte orig_type = 0;
Axis orig_axis = AXIS_X;
StationID sid = GetStationIndex(tile);
if (check_type) orig_type = GetCustomStationSpecIndex(tile);
if (check_axis) orig_axis = GetRailStationAxis(tile);
for (;;) {
TileIndex new_tile = TILE_ADD(tile, delta);
if (!IsTileType(new_tile, MP_STATION) || GetStationIndex(new_tile) != sid) break;
if (!HasStationRail(new_tile)) break;
if (check_type && GetCustomStationSpecIndex(new_tile) != orig_type) break;
if (check_axis && GetRailStationAxis(new_tile) != orig_axis) break;
tile = new_tile;
}
return tile;
}
static uint32 GetPlatformInfoHelper(TileIndex tile, bool check_type, bool check_axis, bool centred)
{
int tx = TileX(tile);
int ty = TileY(tile);
int sx = TileX(FindRailStationEnd(tile, TileDiffXY(-1, 0), check_type, check_axis));
int sy = TileY(FindRailStationEnd(tile, TileDiffXY( 0, -1), check_type, check_axis));
int ex = TileX(FindRailStationEnd(tile, TileDiffXY( 1, 0), check_type, check_axis)) + 1;
int ey = TileY(FindRailStationEnd(tile, TileDiffXY( 0, 1), check_type, check_axis)) + 1;
tx -= sx; ex -= sx;
ty -= sy; ey -= sy;
return GetPlatformInfo(GetRailStationAxis(tile), GetStationGfx(tile), ex, ey, tx, ty, centred);
}
static uint32 GetRailContinuationInfo(TileIndex tile)
{
/* Tile offsets and exit dirs for X axis */
static const Direction x_dir[8] = { DIR_SW, DIR_NE, DIR_SE, DIR_NW, DIR_S, DIR_E, DIR_W, DIR_N };
static const DiagDirection x_exits[8] = { DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SW, DIAGDIR_NE };
/* Tile offsets and exit dirs for Y axis */
static const Direction y_dir[8] = { DIR_SE, DIR_NW, DIR_SW, DIR_NE, DIR_S, DIR_W, DIR_E, DIR_N };
static const DiagDirection y_exits[8] = { DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SE, DIAGDIR_NW };
Axis axis = GetRailStationAxis(tile);
/* Choose appropriate lookup table to use */
const Direction *dir = axis == AXIS_X ? x_dir : y_dir;
const DiagDirection *diagdir = axis == AXIS_X ? x_exits : y_exits;
uint32 res = 0;
uint i;
for (i = 0; i < lengthof(x_dir); i++, dir++, diagdir++) {
TileIndex neighbour_tile = tile + TileOffsByDir(*dir);
TrackBits trackbits = TrackStatusToTrackBits(GetTileTrackStatus(neighbour_tile, TRANSPORT_RAIL, 0));
if (trackbits != TRACK_BIT_NONE) {
/* If there is any track on the tile, set the bit in the second byte */
SetBit(res, i + 8);
/* With tunnels and bridges the tile has tracks, but they are not necessarily connected
* with the next tile because the ramp is not going in the right direction. */
if (IsTileType(neighbour_tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(neighbour_tile) != *diagdir) {
continue;
}
/* If any track reaches our exit direction, set the bit in the lower byte */
if (trackbits & DiagdirReachesTracks(*diagdir)) SetBit(res, i);
}
}
return res;
}
/* Station Resolver Functions */
static uint32 StationGetRandomBits(const ResolverObject *object)
{
const BaseStation *st = object->u.station.st;
const TileIndex tile = object->u.station.tile;
return (st == NULL ? 0 : st->random_bits) | (tile == INVALID_TILE ? 0 : GetStationTileRandomBits(tile) << 16);
}
static uint32 StationGetTriggers(const ResolverObject *object)
{
const BaseStation *st = object->u.station.st;
return st == NULL ? 0 : st->waiting_triggers;
}
static void StationSetTriggers(const ResolverObject *object, int triggers)
{
BaseStation *st = const_cast<BaseStation *>(object->u.station.st);
assert(st != NULL);
st->waiting_triggers = triggers;
}
/**
* Station variable cache
* This caches 'expensive' station variable lookups which iterate over
* several tiles that may be called multiple times per Resolve().
*/
static struct {
uint32 v40;
uint32 v41;
uint32 v45;
uint32 v46;
uint32 v47;
uint32 v49;
uint8 valid; ///< Bits indicating what variable is valid (for each bit, \c 0 is invalid, \c 1 is valid).
} _svc;
static uint32 StationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
const BaseStation *st = object->u.station.st;
TileIndex tile = object->u.station.tile;
if (object->scope == VSG_SCOPE_PARENT) {
/* Pass the request on to the town of the station */
const Town *t;
if (st != NULL) {
t = st->town;
} else if (tile != INVALID_TILE) {
t = ClosestTownFromTile(tile, UINT_MAX);
} else {
*available = false;
return UINT_MAX;
}
return TownGetVariable(variable, parameter, available, t);
}
if (st == NULL) {
/* Station does not exist, so we're in a purchase list */
switch (variable) {
case 0x40:
case 0x41:
case 0x46:
case 0x47:
case 0x49: return 0x2110000; // Platforms, tracks & position
case 0x42: return 0; // Rail type (XXX Get current type from GUI?)
case 0x43: return _current_company; // Station owner
case 0x44: return 2; // PBS status
case 0xFA: return Clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Build date, clamped to a 16 bit value
}
*available = false;
return UINT_MAX;
}
switch (variable) {
/* Calculated station variables */
case 0x40:
if (!HasBit(_svc.valid, 0)) { _svc.v40 = GetPlatformInfoHelper(tile, false, false, false); SetBit(_svc.valid, 0); }
return _svc.v40;
case 0x41:
if (!HasBit(_svc.valid, 1)) { _svc.v41 = GetPlatformInfoHelper(tile, true, false, false); SetBit(_svc.valid, 1); }
return _svc.v41;
case 0x42: return GetTerrainType(tile) | (GetReverseRailTypeTranslation(GetRailType(tile), object->u.station.statspec->grf_prop.grffile) << 8);
case 0x43: return st->owner; // Station owner
case 0x44: return HasStationReservation(tile) ? 7 : 4; // PBS status
case 0x45:
if (!HasBit(_svc.valid, 2)) { _svc.v45 = GetRailContinuationInfo(tile); SetBit(_svc.valid, 2); }
return _svc.v45;
case 0x46:
if (!HasBit(_svc.valid, 3)) { _svc.v46 = GetPlatformInfoHelper(tile, false, false, true); SetBit(_svc.valid, 3); }
return _svc.v46;
case 0x47:
if (!HasBit(_svc.valid, 4)) { _svc.v47 = GetPlatformInfoHelper(tile, true, false, true); SetBit(_svc.valid, 4); }
return _svc.v47;
case 0x49:
if (!HasBit(_svc.valid, 5)) { _svc.v49 = GetPlatformInfoHelper(tile, false, true, false); SetBit(_svc.valid, 5); }
return _svc.v49;
case 0x4A: // Animation frame of tile
return GetAnimationFrame(tile);
/* Variables which use the parameter */
/* Variables 0x60 to 0x65 are handled separately below */
case 0x66: // Animation frame of nearby tile
if (parameter != 0) tile = GetNearbyTile(parameter, tile);
return st->TileBelongsToRailStation(tile) ? GetAnimationFrame(tile) : UINT_MAX;
case 0x67: { // Land info of nearby tile
Axis axis = GetRailStationAxis(tile);
if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
Slope tileh = GetTileSlope(tile, NULL);
bool swap = (axis == AXIS_Y && HasBit(tileh, CORNER_W) != HasBit(tileh, CORNER_E));
return GetNearbyTileInformation(tile) ^ (swap ? SLOPE_EW : 0);
}
case 0x68: { // Station info of nearby tiles
TileIndex nearby_tile = GetNearbyTile(parameter, tile);
if (!HasStationTileRail(nearby_tile)) return 0xFFFFFFFF;
uint32 grfid = st->speclist[GetCustomStationSpecIndex(tile)].grfid;
bool perpendicular = GetRailStationAxis(tile) != GetRailStationAxis(nearby_tile);
bool same_station = st->TileBelongsToRailStation(nearby_tile);
uint32 res = GB(GetStationGfx(nearby_tile), 1, 2) << 12 | !!perpendicular << 11 | !!same_station << 10;
if (IsCustomStationSpecIndex(nearby_tile)) {
const StationSpecList ssl = BaseStation::GetByTile(nearby_tile)->speclist[GetCustomStationSpecIndex(nearby_tile)];
res |= 1 << (ssl.grfid != grfid ? 9 : 8) | ssl.localidx;
}
return res;
}
/* General station variables */
case 0x82: return 50;
case 0x84: return st->string_id;
case 0x86: return 0;
case 0xF0: return st->facilities;
case 0xFA: return Clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
}
return st->GetNewGRFVariable(object, variable, parameter, available);
}
uint32 Station::GetNewGRFVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) const
{
switch (variable) {
case 0x48: { // Accepted cargo types
CargoID cargo_type;
uint32 value = 0;
for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
if (HasBit(this->goods[cargo_type].acceptance_pickup, GoodsEntry::PICKUP)) SetBit(value, cargo_type);
}
return value;
}
case 0x8A: return this->had_vehicle_of_type;
case 0xF1: return (this->airport.tile != INVALID_TILE) ? this->airport.GetSpec()->ttd_airport_type : ATP_TTDP_LARGE;
case 0xF2: return (this->truck_stops != NULL) ? this->truck_stops->status : 0;
case 0xF3: return (this->bus_stops != NULL) ? this->bus_stops->status : 0;
case 0xF6: return this->airport.flags;
case 0xF7: return GB(this->airport.flags, 8, 8);
}
/* Handle cargo variables with parameter, 0x60 to 0x65 */
if (variable >= 0x60 && variable <= 0x65) {
CargoID c = GetCargoTranslation(parameter, object->u.station.statspec->grf_prop.grffile);
if (c == CT_INVALID) return 0;
const GoodsEntry *ge = &this->goods[c];
switch (variable) {
case 0x60: return min(ge->cargo.Count(), 4095);
case 0x61: return ge->days_since_pickup;
case 0x62: return ge->rating;
case 0x63: return ge->cargo.DaysInTransit();
case 0x64: return ge->last_speed | (ge->last_age << 8);
case 0x65: return GB(ge->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 3;
}
}
/* Handle cargo variables (deprecated) */
if (variable >= 0x8C && variable <= 0xEC) {
const GoodsEntry *g = &this->goods[GB(variable - 0x8C, 3, 4)];
switch (GB(variable - 0x8C, 0, 3)) {
case 0: return g->cargo.Count();
case 1: return GB(min(g->cargo.Count(), 4095), 0, 4) | (GB(g->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 7);
case 2: return g->days_since_pickup;
case 3: return g->rating;
case 4: return g->cargo.Source();
case 5: return g->cargo.DaysInTransit();
case 6: return g->last_speed;
case 7: return g->last_age;
}
}
DEBUG(grf, 1, "Unhandled station variable 0x%X", variable);
*available = false;
return UINT_MAX;
}
uint32 Waypoint::GetNewGRFVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) const
{
switch (variable) {
case 0x48: return 0; // Accepted cargo types
case 0x8A: return HVOT_WAYPOINT;
case 0xF1: return 0; // airport type
case 0xF2: return 0; // truck stop status
case 0xF3: return 0; // bus stop status
case 0xF6: return 0; // airport flags
case 0xF7: return 0; // airport flags cont.
}
/* Handle cargo variables with parameter, 0x60 to 0x65 */
if (variable >= 0x60 && variable <= 0x65) {
return 0;
}
/* Handle cargo variables (deprecated) */
if (variable >= 0x8C && variable <= 0xEC) {
switch (GB(variable - 0x8C, 0, 3)) {
case 3: return INITIAL_STATION_RATING;
case 4: return INVALID_STATION;
default: return 0;
}
}
DEBUG(grf, 1, "Unhandled station variable 0x%X", variable);
*available = false;
return UINT_MAX;
}
static const SpriteGroup *StationResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
{
const BaseStation *bst = object->u.station.st;
const StationSpec *statspec = object->u.station.statspec;
uint set;
uint cargo = 0;
CargoID cargo_type = object->u.station.cargo_type;
if (bst == NULL || statspec->cls_id == STAT_CLASS_WAYP) {
return group->loading[0];
}
const Station *st = Station::From(bst);
switch (cargo_type) {
case CT_INVALID:
case CT_DEFAULT_NA:
case CT_PURCHASE:
cargo = 0;
break;
case CT_DEFAULT:
for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
cargo += st->goods[cargo_type].cargo.Count();
}
break;
default:
cargo = st->goods[cargo_type].cargo.Count();
break;
}
if (HasBit(statspec->flags, SSF_DIV_BY_STATION_SIZE)) cargo /= (st->train_station.w + st->train_station.h);
cargo = min(0xfff, cargo);
if (cargo > statspec->cargo_threshold) {
if (group->num_loading > 0) {
set = ((cargo - statspec->cargo_threshold) * group->num_loading) / (4096 - statspec->cargo_threshold);
return group->loading[set];
}
} else {
if (group->num_loaded > 0) {
set = (cargo * group->num_loaded) / (statspec->cargo_threshold + 1);
return group->loaded[set];
}
}
return group->loading[0];
}
static void NewStationResolver(ResolverObject *res, const StationSpec *statspec, const BaseStation *st, TileIndex tile)
{
res->GetRandomBits = StationGetRandomBits;
res->GetTriggers = StationGetTriggers;
res->SetTriggers = StationSetTriggers;
res->GetVariable = StationGetVariable;
res->ResolveReal = StationResolveReal;
res->u.station.st = st;
res->u.station.statspec = statspec;
res->u.station.tile = tile;
res->callback = CBID_NO_CALLBACK;
res->callback_param1 = 0;
res->callback_param2 = 0;
res->last_value = 0;
res->trigger = 0;
res->reseed = 0;
res->count = 0;
res->grffile = (statspec != NULL ? statspec->grf_prop.grffile : NULL);
/* Invalidate all cached vars */
_svc.valid = 0;
}
static const SpriteGroup *ResolveStation(ResolverObject *object)
{
const SpriteGroup *group;
CargoID ctype = CT_DEFAULT_NA;
if (object->u.station.st == NULL) {
/* No station, so we are in a purchase list */
ctype = CT_PURCHASE;
} else if (Station::IsExpected(object->u.station.st)) {
const Station *st = Station::From(object->u.station.st);
/* Pick the first cargo that we have waiting */
const CargoSpec *cs;
FOR_ALL_CARGOSPECS(cs) {
if (object->u.station.statspec->grf_prop.spritegroup[cs->Index()] != NULL &&
!st->goods[cs->Index()].cargo.Empty()) {
ctype = cs->Index();
break;
}
}
}
group = object->u.station.statspec->grf_prop.spritegroup[ctype];
if (group == NULL) {
ctype = CT_DEFAULT;
group = object->u.station.statspec->grf_prop.spritegroup[ctype];
}
if (group == NULL) return NULL;
/* Remember the cargo type we've picked */
object->u.station.cargo_type = ctype;
return SpriteGroup::Resolve(group, object);
}
/**
* Resolve sprites for drawing a station tile.
* @param statspec Station spec
* @param st Station (NULL in GUI)
* @param tile Station tile being drawn (INVALID_TILE in GUI)
* @param var10 Value to put in variable 10; normally 0; 1 when resolving the groundsprite and SSF_SEPARATE_GROUND is set.
* @return First sprite of the Action 1 spriteset ot use, minus an offset of 0x42D to accommodate for weird NewGRF specs.
*/
SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint32 var10)
{
const SpriteGroup *group;
ResolverObject object;
NewStationResolver(&object, statspec, st, tile);
object.callback_param1 = var10;
group = ResolveStation(&object);
if (group == NULL || group->type != SGT_RESULT) return 0;
return group->GetResult() - 0x42D;
}
/**
* Resolve the sprites for custom station foundations.
* @param statspec Station spec
* @param st Station
* @param tile Station tile being drawn
* @param layout Spritelayout as returned by previous callback
* @param edge_info Information about northern tile edges; whether they need foundations or merge into adjacent tile's foundations.
* @return First sprite of a set of foundation sprites for various slopes.
*/
SpriteID GetCustomStationFoundationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint layout, uint edge_info)
{
const SpriteGroup *group;
ResolverObject object;
NewStationResolver(&object, statspec, st, tile);
object.callback_param1 = 2; // Indicate we are resolving the foundation sprites
object.callback_param2 = layout | (edge_info << 16);
ClearRegister(0x100);
group = ResolveStation(&object);
if (group == NULL || group->type != SGT_RESULT) return 0;
return group->GetResult() + GetRegister(0x100);
}
uint16 GetStationCallback(CallbackID callback, uint32 param1, uint32 param2, const StationSpec *statspec, const BaseStation *st, TileIndex tile)
{
const SpriteGroup *group;
ResolverObject object;
NewStationResolver(&object, statspec, st, tile);
object.callback = callback;
object.callback_param1 = param1;
object.callback_param2 = param2;
group = ResolveStation(&object);
if (group == NULL) return CALLBACK_FAILED;
return group->GetCallbackResult();
}
/**
* Allocate a StationSpec to a Station. This is called once per build operation.
* @param statspec StationSpec to allocate.
* @param st Station to allocate it to.
* @param exec Whether to actually allocate the spec.
* @return Index within the Station's spec list, or -1 if the allocation failed.
*/
int AllocateSpecToStation(const StationSpec *statspec, BaseStation *st, bool exec)
{
uint i;
if (statspec == NULL || st == NULL) return 0;
for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
if (st->speclist[i].spec == NULL && st->speclist[i].grfid == 0) break;
}
if (i == MAX_SPECLIST) {
/* As final effort when the spec list is already full...
* try to find the same spec and return that one. This might
* result in slighty "wrong" (as per specs) looking stations,
* but it's fairly unlikely that one reaches the limit anyways.
*/
for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
if (st->speclist[i].spec == statspec) return i;
}
return -1;
}
if (exec) {
if (i >= st->num_specs) {
st->num_specs = i + 1;
st->speclist = ReallocT(st->speclist, st->num_specs);
if (st->num_specs == 2) {
/* Initial allocation */
st->speclist[0].spec = NULL;
st->speclist[0].grfid = 0;
st->speclist[0].localidx = 0;
}
}
st->speclist[i].spec = statspec;
st->speclist[i].grfid = statspec->grf_prop.grffile->grfid;
st->speclist[i].localidx = statspec->grf_prop.local_id;
}
return i;
}
/**
* Deallocate a StationSpec from a Station. Called when removing a single station tile.
* @param st Station to work with.
* @param specindex Index of the custom station within the Station's spec list.
* @return Indicates whether the StationSpec was deallocated.
*/
void DeallocateSpecFromStation(BaseStation *st, byte specindex)
{
/* specindex of 0 (default) is never freeable */
if (specindex == 0) return;
ETileArea area = ETileArea(st, INVALID_TILE, TA_WHOLE);
/* Check all tiles over the station to check if the specindex is still in use */
TILE_AREA_LOOP(tile, area) {
if (st->TileBelongsToRailStation(tile) && GetCustomStationSpecIndex(tile) == specindex) {
return;
}
}
/* This specindex is no longer in use, so deallocate it */
st->speclist[specindex].spec = NULL;
st->speclist[specindex].grfid = 0;
st->speclist[specindex].localidx = 0;
/* If this was the highest spec index, reallocate */
if (specindex == st->num_specs - 1) {
for (; st->speclist[st->num_specs - 1].grfid == 0 && st->num_specs > 1; st->num_specs--) {}
if (st->num_specs > 1) {
st->speclist = ReallocT(st->speclist, st->num_specs);
} else {
free(st->speclist);
st->num_specs = 0;
st->speclist = NULL;
st->cached_anim_triggers = 0;
return;
}
}
StationUpdateAnimTriggers(st);
}
/**
* Draw representation of a station tile for GUI purposes.
* @param x Position x of image.
* @param y Position y of image.
* @param axis Axis.
* @param railtype Rail type.
* @param sclass, station Type of station.
* @param station station ID
* @return True if the tile was drawn (allows for fallback to default graphic)
*/
bool DrawStationTile(int x, int y, RailType railtype, Axis axis, StationClassID sclass, uint station)
{
const StationSpec *statspec;
const DrawTileSprites *sprites;
const RailtypeInfo *rti = GetRailTypeInfo(railtype);
PaletteID palette = COMPANY_SPRITE_COLOUR(_local_company);
uint tile = 2;
statspec = StationClass::Get(sclass, station);
if (statspec == NULL) return false;
uint relocation = GetCustomStationRelocation(statspec, NULL, INVALID_TILE);
if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0x2110000, 0, statspec, NULL, INVALID_TILE);
if (callback != CALLBACK_FAILED) tile = callback;
}
if (statspec->renderdata == NULL) {
sprites = GetStationTileLayout(STATION_RAIL, tile + axis);
} else {
sprites = &statspec->renderdata[(tile < statspec->tiles) ? tile + axis : (uint)axis];
}
SpriteID image = sprites->ground.sprite;
PaletteID pal = sprites->ground.pal;
if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
/* Use separate action 1-2-3 chain for ground sprite */
image += GetCustomStationRelocation(statspec, NULL, INVALID_TILE, 1);
} else {
image += relocation;
}
image += rti->fallback_railtype;
} else {
image += rti->GetRailtypeSpriteOffset();
}
DrawSprite(image, GroundSpritePaletteTransform(image, pal, palette), x, y);
DrawRailTileSeqInGUI(x, y, sprites, rti->GetRailtypeSpriteOffset(), relocation, palette);
return true;
}
const StationSpec *GetStationSpec(TileIndex t)
{
if (!IsCustomStationSpecIndex(t)) return NULL;
const BaseStation *st = BaseStation::GetByTile(t);
uint specindex = GetCustomStationSpecIndex(t);
return specindex < st->num_specs ? st->speclist[specindex].spec : NULL;
}
/**
* Check whether a rail station tile is NOT traversable.
* @param tile %Tile to test.
* @return Station tile is blocked.
* @note This could be cached (during build) in the map array to save on all the dereferencing.
*/
bool IsStationTileBlocked(TileIndex tile)
{
const StationSpec *statspec = GetStationSpec(tile);
return statspec != NULL && HasBit(statspec->blocked, GetStationGfx(tile));
}
/**
* Check if a rail station tile can be electrified.
* @param tile %Tile to test.
* @return Tile can be electrified.
* @note This could be cached (during build) in the map array to save on all the dereferencing.
*/
bool IsStationTileElectrifiable(TileIndex tile)
{
const StationSpec *statspec = GetStationSpec(tile);
return statspec == NULL ||
HasBit(statspec->pylons, GetStationGfx(tile)) ||
!HasBit(statspec->wires, GetStationGfx(tile));
}
/** Helper class for animation control. */
struct StationAnimationBase : public AnimationBase<StationAnimationBase, StationSpec, BaseStation, GetStationCallback> {
static const CallbackID cb_animation_speed = CBID_STATION_ANIMATION_SPEED;
static const CallbackID cb_animation_next_frame = CBID_STATION_ANIM_NEXT_FRAME;
static const StationCallbackMask cbm_animation_speed = CBM_STATION_ANIMATION_SPEED;
static const StationCallbackMask cbm_animation_next_frame = CBM_STATION_ANIMATION_NEXT_FRAME;
};
void AnimateStationTile(TileIndex tile)
{
const StationSpec *ss = GetStationSpec(tile);
if (ss == NULL) return;
StationAnimationBase::AnimateTile(ss, BaseStation::GetByTile(tile), tile, HasBit(ss->flags, SSF_CB141_RANDOM_BITS));
}
void TriggerStationAnimation(const BaseStation *st, TileIndex tile, StationAnimationTrigger trigger, CargoID cargo_type)
{
/* List of coverage areas for each animation trigger */
static const TriggerArea tas[] = {
TA_TILE, TA_WHOLE, TA_WHOLE, TA_PLATFORM, TA_PLATFORM, TA_PLATFORM, TA_WHOLE
};
/* Get Station if it wasn't supplied */
if (st == NULL) st = BaseStation::GetByTile(tile);
/* Check the cached animation trigger bitmask to see if we need
* to bother with any further processing. */
if (!HasBit(st->cached_anim_triggers, trigger)) return;
uint16 random_bits = Random();
ETileArea area = ETileArea(st, tile, tas[trigger]);
/* Check all tiles over the station to check if the specindex is still in use */
TILE_AREA_LOOP(tile, area) {
if (st->TileBelongsToRailStation(tile)) {
const StationSpec *ss = GetStationSpec(tile);
if (ss != NULL && HasBit(ss->animation.triggers, trigger)) {
CargoID cargo;
if (cargo_type == CT_INVALID) {
cargo = CT_INVALID;
} else {
cargo = GetReverseCargoTranslation(cargo_type, ss->grf_prop.grffile);
}
StationAnimationBase::ChangeAnimationFrame(CBID_STATION_ANIM_START_STOP, ss, st, tile, (random_bits << 16) | Random(), (uint8)trigger | (cargo << 8));
}
}
}
}
/**
* Update the cached animation trigger bitmask for a station.
* @param st Station to update.
*/
void StationUpdateAnimTriggers(BaseStation *st)
{
st->cached_anim_triggers = 0;
/* Combine animation trigger bitmask for all station specs
* of this station. */
for (uint i = 0; i < st->num_specs; i++) {
const StationSpec *ss = st->speclist[i].spec;
if (ss != NULL) st->cached_anim_triggers |= ss->animation.triggers;
}
}
/**
* Resolve a station's spec and such so we can get a variable.
* @param ro The resolver object to fill.
* @param index The station to get the data from.
*/
void GetStationResolver(ResolverObject *ro, uint index)
{
NewStationResolver(ro, GetStationSpec(index), Station::GetByTile(index), index);
}
|