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newgrf_commons.cpp
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1 /* $Id: newgrf_commons.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
15 #include "stdafx.h"
16 #include "debug.h"
17 #include "landscape.h"
18 #include "house.h"
19 #include "industrytype.h"
20 #include "newgrf_config.h"
21 #include "clear_map.h"
22 #include "station_map.h"
23 #include "tree_map.h"
24 #include "tunnelbridge_map.h"
25 #include "newgrf_object.h"
26 #include "genworld.h"
27 #include "newgrf_spritegroup.h"
28 #include "newgrf_text.h"
29 #include "company_base.h"
30 #include "error.h"
31 #include "strings_func.h"
32
33 #include "table/strings.h"
34
35 #include "safeguards.h"
36
43 OverrideManagerBase::OverrideManagerBase(uint16 offset, uint16 maximum, uint16 invalid)
44 {
45 max_offset = offset;
46 max_new_entities = maximum;
47 invalid_ID = invalid;
48
49 mapping_ID = CallocT<EntityIDMapping>(max_new_entities);
50 entity_overrides = MallocT<uint16>(max_offset);
51 for (size_t i = 0; i < max_offset; i++) entity_overrides[i] = invalid;
52 grfid_overrides = CallocT<uint32>(max_offset);
53 }
54
59 OverrideManagerBase::~OverrideManagerBase()
60 {
61 free(mapping_ID);
62 free(entity_overrides);
63 free(grfid_overrides);
64 }
65
74 void OverrideManagerBase::Add(uint8 local_id, uint32 grfid, uint entity_type)
75 {
76 assert(entity_type < max_offset);
77 /* An override can be set only once */
78 if (entity_overrides[entity_type] != invalid_ID) return;
79 entity_overrides[entity_type] = local_id;
80 grfid_overrides[entity_type] = grfid;
81 }
82
84 void OverrideManagerBase::ResetMapping()
85 {
86 memset(mapping_ID, 0, (max_new_entities - 1) * sizeof(EntityIDMapping));
87 }
88
90 void OverrideManagerBase::ResetOverride()
91 {
92 for (uint16 i = 0; i < max_offset; i++) {
93 entity_overrides[i] = invalid_ID;
94 grfid_overrides[i] = 0;
95 }
96 }
97
104 uint16 OverrideManagerBase::GetID(uint8 grf_local_id, uint32 grfid) const
105 {
106 const EntityIDMapping *map;
107
108 for (uint16 id = 0; id < max_new_entities; id++) {
109 map = &mapping_ID[id];
110 if (map->entity_id == grf_local_id && map->grfid == grfid) {
111 return id;
112 }
113 }
114
115 return invalid_ID;
116 }
117
125 uint16 OverrideManagerBase::AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id)
126 {
127 uint16 id = this->GetID(grf_local_id, grfid);
128 EntityIDMapping *map;
129
130 /* Look to see if this entity has already been added. This is done
131 * separately from the loop below in case a GRF has been deleted, and there
132 * are any gaps in the array.
133 */
134 if (id != invalid_ID) {
135 return id;
136 }
137
138 /* This entity hasn't been defined before, so give it an ID now. */
139 for (id = max_offset; id < max_new_entities; id++) {
140 map = &mapping_ID[id];
141
142 if (CheckValidNewID(id) && map->entity_id == 0 && map->grfid == 0) {
143 map->entity_id = grf_local_id;
144 map->grfid = grfid;
145 map->substitute_id = substitute_id;
146 return id;
147 }
148 }
149
150 return invalid_ID;
151 }
152
158 uint32 OverrideManagerBase::GetGRFID(uint16 entity_id) const
159 {
160 return mapping_ID[entity_id].grfid;
161 }
162
168 uint16 OverrideManagerBase::GetSubstituteID(uint16 entity_id) const
169 {
170 return mapping_ID[entity_id].substitute_id;
171 }
172
178 void HouseOverrideManager::SetEntitySpec(const HouseSpec *hs)
179 {
180 HouseID house_id = this->AddEntityID(hs->grf_prop.local_id, hs->grf_prop.grffile->grfid, hs->grf_prop.subst_id);
181
182 if (house_id == invalid_ID) {
183 grfmsg(1, "House.SetEntitySpec: Too many houses allocated. Ignoring.");
184 return;
185 }
186
187 MemCpyT(HouseSpec::Get(house_id), hs);
188
189 /* Now add the overrides. */
190 for (int i = 0; i != max_offset; i++) {
191 HouseSpec *overridden_hs = HouseSpec::Get(i);
192
193 if (entity_overrides[i] != hs->grf_prop.local_id || grfid_overrides[i] != hs->grf_prop.grffile->grfid) continue;
194
195 overridden_hs->grf_prop.override = house_id;
196 entity_overrides[i] = invalid_ID;
197 grfid_overrides[i] = 0;
198 }
199 }
200
207 uint16 IndustryOverrideManager::GetID(uint8 grf_local_id, uint32 grfid) const
208 {
209 uint16 id = OverrideManagerBase::GetID(grf_local_id, grfid);
210 if (id != invalid_ID) return id;
211
212 /* No mapping found, try the overrides */
213 for (id = 0; id < max_offset; id++) {
214 if (entity_overrides[id] == grf_local_id && grfid_overrides[id] == grfid) return id;
215 }
216
217 return invalid_ID;
218 }
219
227 uint16 IndustryOverrideManager::AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id)
228 {
229 /* This entity hasn't been defined before, so give it an ID now. */
230 for (uint16 id = 0; id < max_new_entities; id++) {
231 /* Skip overridden industries */
232 if (id < max_offset && entity_overrides[id] != invalid_ID) continue;
233
234 /* Get the real live industry */
235 const IndustrySpec *inds = GetIndustrySpec(id);
236
237 /* This industry must be one that is not available(enabled), mostly because of climate.
238 * And it must not already be used by a grf (grffile == NULL).
239 * So reserve this slot here, as it is the chosen one */
240 if (!inds->enabled && inds->grf_prop.grffile == NULL) {
241 EntityIDMapping *map = &mapping_ID[id];
242
243 if (map->entity_id == 0 && map->grfid == 0) {
244 /* winning slot, mark it as been used */
245 map->entity_id = grf_local_id;
246 map->grfid = grfid;
247 map->substitute_id = substitute_id;
248 return id;
249 }
250 }
251 }
252
253 return invalid_ID;
254 }
255
262 void IndustryOverrideManager::SetEntitySpec(IndustrySpec *inds)
263 {
264 /* First step : We need to find if this industry is already specified in the savegame data. */
265 IndustryType ind_id = this->GetID(inds->grf_prop.local_id, inds->grf_prop.grffile->grfid);
266
267 if (ind_id == invalid_ID) {
268 /* Not found.
269 * Or it has already been overridden, so you've lost your place old boy.
270 * Or it is a simple substitute.
271 * We need to find a free available slot */
272 ind_id = this->AddEntityID(inds->grf_prop.local_id, inds->grf_prop.grffile->grfid, inds->grf_prop.subst_id);
273 inds->grf_prop.override = invalid_ID; // make sure it will not be detected as overridden
274 }
275
276 if (ind_id == invalid_ID) {
277 grfmsg(1, "Industry.SetEntitySpec: Too many industries allocated. Ignoring.");
278 return;
279 }
280
281 /* Now that we know we can use the given id, copy the spec to its final destination... */
282 memcpy(&_industry_specs[ind_id], inds, sizeof(*inds));
283 /* ... and mark it as usable*/
284 _industry_specs[ind_id].enabled = true;
285 }
286
287 void IndustryTileOverrideManager::SetEntitySpec(const IndustryTileSpec *its)
288 {
289 IndustryGfx indt_id = this->AddEntityID(its->grf_prop.local_id, its->grf_prop.grffile->grfid, its->grf_prop.subst_id);
290
291 if (indt_id == invalid_ID) {
292 grfmsg(1, "IndustryTile.SetEntitySpec: Too many industry tiles allocated. Ignoring.");
293 return;
294 }
295
296 memcpy(&_industry_tile_specs[indt_id], its, sizeof(*its));
297
298 /* Now add the overrides. */
299 for (int i = 0; i < max_offset; i++) {
300 IndustryTileSpec *overridden_its = &_industry_tile_specs[i];
301
302 if (entity_overrides[i] != its->grf_prop.local_id || grfid_overrides[i] != its->grf_prop.grffile->grfid) continue;
303
304 overridden_its->grf_prop.override = indt_id;
305 overridden_its->enabled = false;
306 entity_overrides[i] = invalid_ID;
307 grfid_overrides[i] = 0;
308 }
309 }
310
317 void ObjectOverrideManager::SetEntitySpec(ObjectSpec *spec)
318 {
319 /* First step : We need to find if this object is already specified in the savegame data. */
320 ObjectType type = this->GetID(spec->grf_prop.local_id, spec->grf_prop.grffile->grfid);
321
322 if (type == invalid_ID) {
323 /* Not found.
324 * Or it has already been overridden, so you've lost your place old boy.
325 * Or it is a simple substitute.
326 * We need to find a free available slot */
327 type = this->AddEntityID(spec->grf_prop.local_id, spec->grf_prop.grffile->grfid, OBJECT_TRANSMITTER);
328 }
329
330 if (type == invalid_ID) {
331 grfmsg(1, "Object.SetEntitySpec: Too many objects allocated. Ignoring.");
332 return;
333 }
334
335 extern ObjectSpec _object_specs[NUM_OBJECTS];
336
337 /* Now that we know we can use the given id, copy the spec to its final destination. */
338 memcpy(&_object_specs[type], spec, sizeof(*spec));
339 ObjectClass::Assign(&_object_specs[type]);
340 }
341
350 uint32 GetTerrainType(TileIndex tile, TileContext context)
351 {
352 switch (_settings_game.game_creation.landscape) {
353 case LT_TROPIC: return GetTropicZone(tile);
354 case LT_ARCTIC: {
355 bool has_snow;
356 switch (GetTileType(tile)) {
357 case MP_CLEAR:
358 /* During map generation the snowstate may not be valid yet, as the tileloop may not have run yet. */
359 if (_generating_world) goto genworld;
360 has_snow = IsSnowTile(tile) && GetClearDensity(tile) >= 2;
361 break;
362
363 case MP_RAILWAY: {
364 /* During map generation the snowstate may not be valid yet, as the tileloop may not have run yet. */
365 if (_generating_world) goto genworld; // we do not care about foundations here
366 RailGroundType ground = GetRailGroundType(tile);
367 has_snow = (ground == RAIL_GROUND_ICE_DESERT || (context == TCX_UPPER_HALFTILE && ground == RAIL_GROUND_HALF_SNOW));
368 break;
369 }
370
371 case MP_ROAD:
372 /* During map generation the snowstate may not be valid yet, as the tileloop may not have run yet. */
373 if (_generating_world) goto genworld; // we do not care about foundations here
374 has_snow = IsOnSnow(tile);
375 break;
376
377 case MP_TREES: {
378 /* During map generation the snowstate may not be valid yet, as the tileloop may not have run yet. */
379 if (_generating_world) goto genworld;
380 TreeGround ground = GetTreeGround(tile);
381 has_snow = (ground == TREE_GROUND_SNOW_DESERT || ground == TREE_GROUND_ROUGH_SNOW) && GetTreeDensity(tile) >= 2;
382 break;
383 }
384
385 case MP_TUNNELBRIDGE:
386 if (context == TCX_ON_BRIDGE) {
387 has_snow = (GetBridgeHeight(tile) > GetSnowLine());
388 } else {
389 /* During map generation the snowstate may not be valid yet, as the tileloop may not have run yet. */
390 if (_generating_world) goto genworld; // we do not care about foundations here
391 has_snow = HasTunnelBridgeSnowOrDesert(tile);
392 }
393 break;
394
395 case MP_STATION:
396 case MP_HOUSE:
397 case MP_INDUSTRY:
398 case MP_OBJECT:
399 /* These tiles usually have a levelling foundation. So use max Z */
400 has_snow = (GetTileMaxZ(tile) > GetSnowLine());
401 break;
402
403 case MP_VOID:
404 case MP_WATER:
405 genworld:
406 has_snow = (GetTileZ(tile) > GetSnowLine());
407 break;
408
409 default: NOT_REACHED();
410 }
411 return has_snow ? 4 : 0;
412 }
413 default: return 0;
414 }
415 }
416
425 TileIndex GetNearbyTile(byte parameter, TileIndex tile, bool signed_offsets, Axis axis)
426 {
427 int8 x = GB(parameter, 0, 4);
428 int8 y = GB(parameter, 4, 4);
429
430 if (signed_offsets && x >= 8) x -= 16;
431 if (signed_offsets && y >= 8) y -= 16;
432
433 /* Swap width and height depending on axis for railway stations */
434 if (axis == INVALID_AXIS && HasStationTileRail(tile)) axis = GetRailStationAxis(tile);
435 if (axis == AXIS_Y) Swap(x, y);
436
437 /* Make sure we never roam outside of the map, better wrap in that case */
438 return TILE_MASK(tile + TileDiffXY(x, y));
439 }
440
448 uint32 GetNearbyTileInformation(TileIndex tile, bool grf_version8)
449 {
450 TileType tile_type = GetTileType(tile);
451
452 /* Fake tile type for trees on shore */
453 if (IsTileType(tile, MP_TREES) && GetTreeGround(tile) == TREE_GROUND_SHORE) tile_type = MP_WATER;
454
455 int z;
456 Slope tileh = GetTilePixelSlope(tile, &z);
457 /* Return 0 if the tile is a land tile */
458 byte terrain_type = (HasTileWaterClass(tile) ? (GetWaterClass(tile) + 1) & 3 : 0) << 5 | GetTerrainType(tile) << 2 | (tile_type == MP_WATER ? 1 : 0) << 1;
459 if (grf_version8) z /= TILE_HEIGHT;
460 return tile_type << 24 | Clamp(z, 0, 0xFF) << 16 | terrain_type << 8 | tileh;
461 }
462
469 uint32 GetCompanyInfo(CompanyID owner, const Livery *l)
470 {
471 if (l == NULL && Company::IsValidID(owner)) l = &Company::Get(owner)->livery[LS_DEFAULT];
472 return owner | (Company::IsValidAiID(owner) ? 0x10000 : 0) | (l != NULL ? (l->colour1 << 24) | (l->colour2 << 28) : 0);
473 }
474
482 CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, const GRFFile *grffile, StringID default_error)
483 {
484 CommandCost res;
485
486 if (cb_res < 0x400) {
487 res = CommandCost(GetGRFStringID(grffile->grfid, 0xD000 + cb_res));
488 } else {
489 switch (cb_res) {
490 case 0x400: return res; // No error.
491
492 default: // unknown reason -> default error
493 case 0x401: res = CommandCost(default_error); break;
494
495 case 0x402: res = CommandCost(STR_ERROR_CAN_ONLY_BE_BUILT_IN_RAINFOREST); break;
496 case 0x403: res = CommandCost(STR_ERROR_CAN_ONLY_BE_BUILT_IN_DESERT); break;
497 case 0x404: res = CommandCost(STR_ERROR_CAN_ONLY_BE_BUILT_ABOVE_SNOW_LINE); break;
498 case 0x405: res = CommandCost(STR_ERROR_CAN_ONLY_BE_BUILT_BELOW_SNOW_LINE); break;
499 case 0x406: res = CommandCost(STR_ERROR_CAN_T_BUILD_ON_SEA); break;
500 case 0x407: res = CommandCost(STR_ERROR_CAN_T_BUILD_ON_CANAL); break;
501 case 0x408: res = CommandCost(STR_ERROR_CAN_T_BUILD_ON_RIVER); break;
502 }
503 }
504
505 /* Copy some parameters from the registers to the error message text ref. stack */
506 res.UseTextRefStack(grffile, 4);
507
508 return res;
509 }
510
518 void ErrorUnknownCallbackResult(uint32 grfid, uint16 cbid, uint16 cb_res)
519 {
520 GRFConfig *grfconfig = GetGRFConfig(grfid);
521
522 if (!HasBit(grfconfig->grf_bugs, GBUG_UNKNOWN_CB_RESULT)) {
523 SetBit(grfconfig->grf_bugs, GBUG_UNKNOWN_CB_RESULT);
524 SetDParamStr(0, grfconfig->GetName());
525 SetDParam(1, cbid);
526 SetDParam(2, cb_res);
527 ShowErrorMessage(STR_NEWGRF_BUGGY, STR_NEWGRF_BUGGY_UNKNOWN_CALLBACK_RESULT, WL_CRITICAL);
528 }
529
530 /* debug output */
531 char buffer[512];
532
533 SetDParamStr(0, grfconfig->GetName());
534 GetString(buffer, STR_NEWGRF_BUGGY, lastof(buffer));
535 DEBUG(grf, 0, "%s", buffer + 3);
536
537 SetDParam(1, cbid);
538 SetDParam(2, cb_res);
539 GetString(buffer, STR_NEWGRF_BUGGY_UNKNOWN_CALLBACK_RESULT, lastof(buffer));
540 DEBUG(grf, 0, "%s", buffer + 3);
541 }
542
552 bool ConvertBooleanCallback(const GRFFile *grffile, uint16 cbid, uint16 cb_res)
553 {
554 assert(cb_res != CALLBACK_FAILED); // We do not know what to return
555
556 if (grffile->grf_version < 8) return cb_res != 0;
557
558 if (cb_res > 1) ErrorUnknownCallbackResult(grffile->grfid, cbid, cb_res);
559 return cb_res != 0;
560 }
561
571 bool Convert8bitBooleanCallback(const GRFFile *grffile, uint16 cbid, uint16 cb_res)
572 {
573 assert(cb_res != CALLBACK_FAILED); // We do not know what to return
574
575 if (grffile->grf_version < 8) return GB(cb_res, 0, 8) != 0;
576
577 if (cb_res > 1) ErrorUnknownCallbackResult(grffile->grfid, cbid, cb_res);
578 return cb_res != 0;
579 }
580
581
582 /* static */ SmallVector<DrawTileSeqStruct, 8> NewGRFSpriteLayout::result_seq;
583
588 void NewGRFSpriteLayout::Clone(const DrawTileSeqStruct *source)
589 {
590 assert(this->seq == NULL);
591 assert(source != NULL);
592
593 size_t count = 1; // 1 for the terminator
594 const DrawTileSeqStruct *element;
595 foreach_draw_tile_seq(element, source) count++;
596
597 DrawTileSeqStruct *sprites = MallocT<DrawTileSeqStruct>(count);
598 MemCpyT(sprites, source, count);
599 this->seq = sprites;
600 }
601
606 void NewGRFSpriteLayout::Clone(const NewGRFSpriteLayout *source)
607 {
608 this->Clone((const DrawTileSprites*)source);
609
610 if (source->registers != NULL) {
611 size_t count = 1; // 1 for the ground sprite
612 const DrawTileSeqStruct *element;
613 foreach_draw_tile_seq(element, source->seq) count++;
614
615 TileLayoutRegisters *regs = MallocT<TileLayoutRegisters>(count);
616 MemCpyT(regs, source->registers, count);
617 this->registers = regs;
618 }
619 }
620
621
626 void NewGRFSpriteLayout::Allocate(uint num_sprites)
627 {
628 assert(this->seq == NULL);
629
630 DrawTileSeqStruct *sprites = CallocT<DrawTileSeqStruct>(num_sprites + 1);
631 sprites[num_sprites].MakeTerminator();
632 this->seq = sprites;
633 }
634
638 void NewGRFSpriteLayout::AllocateRegisters()
639 {
640 assert(this->seq != NULL);
641 assert(this->registers == NULL);
642
643 size_t count = 1; // 1 for the ground sprite
644 const DrawTileSeqStruct *element;
645 foreach_draw_tile_seq(element, this->seq) count++;
646
647 this->registers = CallocT<TileLayoutRegisters>(count);
648 }
649
662 uint32 NewGRFSpriteLayout::PrepareLayout(uint32 orig_offset, uint32 newgrf_ground_offset, uint32 newgrf_offset, uint constr_stage, bool separate_ground) const
663 {
664 result_seq.Clear();
665 uint32 var10_values = 0;
666
667 /* Create a copy of the spritelayout, so we can modify some values.
668 * Also include the groundsprite into the sequence for easier processing. */
669 DrawTileSeqStruct *result = result_seq.Append();
670 result->image = ground;
671 result->delta_x = 0;
672 result->delta_y = 0;
673 result->delta_z = (int8)0x80;
674
675 const DrawTileSeqStruct *dtss;
676 foreach_draw_tile_seq(dtss, this->seq) {
677 *result_seq.Append() = *dtss;
678 }
679 result_seq.Append()->MakeTerminator();
680
681 /* Determine the var10 values the action-1-2-3 chains needs to be resolved for,
682 * and apply the default sprite offsets (unless disabled). */
683 const TileLayoutRegisters *regs = this->registers;
684 bool ground = true;
685 foreach_draw_tile_seq(result, result_seq.Begin()) {
686 TileLayoutFlags flags = TLF_NOTHING;
687 if (regs != NULL) flags = regs->flags;
688
689 /* Record var10 value for the sprite */
690 if (HasBit(result->image.sprite, SPRITE_MODIFIER_CUSTOM_SPRITE) || (flags & TLF_SPRITE_REG_FLAGS)) {
691 uint8 var10 = (flags & TLF_SPRITE_VAR10) ? regs->sprite_var10 : (ground && separate_ground ? 1 : 0);
692 SetBit(var10_values, var10);
693 }
694
695 /* Add default sprite offset, unless there is a custom one */
696 if (!(flags & TLF_SPRITE)) {
697 if (HasBit(result->image.sprite, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
698 result->image.sprite += ground ? newgrf_ground_offset : newgrf_offset;
699 if (constr_stage > 0 && regs != NULL) result->image.sprite += GetConstructionStageOffset(constr_stage, regs->max_sprite_offset);
700 } else {
701 result->image.sprite += orig_offset;
702 }
703 }
704
705 /* Record var10 value for the palette */
706 if (HasBit(result->image.pal, SPRITE_MODIFIER_CUSTOM_SPRITE) || (flags & TLF_PALETTE_REG_FLAGS)) {
707 uint8 var10 = (flags & TLF_PALETTE_VAR10) ? regs->palette_var10 : (ground && separate_ground ? 1 : 0);
708 SetBit(var10_values, var10);
709 }
710
711 /* Add default palette offset, unless there is a custom one */
712 if (!(flags & TLF_PALETTE)) {
713 if (HasBit(result->image.pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
714 result->image.sprite += ground ? newgrf_ground_offset : newgrf_offset;
715 if (constr_stage > 0 && regs != NULL) result->image.sprite += GetConstructionStageOffset(constr_stage, regs->max_palette_offset);
716 }
717 }
718
719 ground = false;
720 if (regs != NULL) regs++;
721 }
722
723 return var10_values;
724 }
725
734 void NewGRFSpriteLayout::ProcessRegisters(uint8 resolved_var10, uint32 resolved_sprite, bool separate_ground) const
735 {
736 DrawTileSeqStruct *result;
737 const TileLayoutRegisters *regs = this->registers;
738 bool ground = true;
739 foreach_draw_tile_seq(result, result_seq.Begin()) {
740 TileLayoutFlags flags = TLF_NOTHING;
741 if (regs != NULL) flags = regs->flags;
742
743 /* Is the sprite or bounding box affected by an action-1-2-3 chain? */
744 if (HasBit(result->image.sprite, SPRITE_MODIFIER_CUSTOM_SPRITE) || (flags & TLF_SPRITE_REG_FLAGS)) {
745 /* Does the var10 value apply to this sprite? */
746 uint8 var10 = (flags & TLF_SPRITE_VAR10) ? regs->sprite_var10 : (ground && separate_ground ? 1 : 0);
747 if (var10 == resolved_var10) {
748 /* Apply registers */
749 if ((flags & TLF_DODRAW) && GetRegister(regs->dodraw) == 0) {
750 result->image.sprite = 0;
751 } else {
752 if (HasBit(result->image.sprite, SPRITE_MODIFIER_CUSTOM_SPRITE)) result->image.sprite += resolved_sprite;
753 if (flags & TLF_SPRITE) {
754 int16 offset = (int16)GetRegister(regs->sprite); // mask to 16 bits to avoid trouble
755 if (!HasBit(result->image.sprite, SPRITE_MODIFIER_CUSTOM_SPRITE) || (offset >= 0 && offset < regs->max_sprite_offset)) {
756 result->image.sprite += offset;
757 } else {
758 result->image.sprite = SPR_IMG_QUERY;
759 }
760 }
761
762 if (result->IsParentSprite()) {
763 if (flags & TLF_BB_XY_OFFSET) {
764 result->delta_x += (int32)GetRegister(regs->delta.parent[0]);
765 result->delta_y += (int32)GetRegister(regs->delta.parent[1]);
766 }
767 if (flags & TLF_BB_Z_OFFSET) result->delta_z += (int32)GetRegister(regs->delta.parent[2]);
768 } else {
769 if (flags & TLF_CHILD_X_OFFSET) result->delta_x += (int32)GetRegister(regs->delta.child[0]);
770 if (flags & TLF_CHILD_Y_OFFSET) result->delta_y += (int32)GetRegister(regs->delta.child[1]);
771 }
772 }
773 }
774 }
775
776 /* Is the palette affected by an action-1-2-3 chain? */
777 if (result->image.sprite != 0 && (HasBit(result->image.pal, SPRITE_MODIFIER_CUSTOM_SPRITE) || (flags & TLF_PALETTE_REG_FLAGS))) {
778 /* Does the var10 value apply to this sprite? */
779 uint8 var10 = (flags & TLF_PALETTE_VAR10) ? regs->palette_var10 : (ground && separate_ground ? 1 : 0);
780 if (var10 == resolved_var10) {
781 /* Apply registers */
782 if (HasBit(result->image.pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) result->image.pal += resolved_sprite;
783 if (flags & TLF_PALETTE) {
784 int16 offset = (int16)GetRegister(regs->palette); // mask to 16 bits to avoid trouble
785 if (!HasBit(result->image.pal, SPRITE_MODIFIER_CUSTOM_SPRITE) || (offset >= 0 && offset < regs->max_palette_offset)) {
786 result->image.pal += offset;
787 } else {
788 result->image.sprite = SPR_IMG_QUERY;
789 result->image.pal = PAL_NONE;
790 }
791 }
792 }
793 }
794
795 ground = false;
796 if (regs != NULL) regs++;
797 }
798 }