OpenTTD: src/object_cmd.cpp Source File

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object_cmd.cpp
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1 /* $Id: object_cmd.cpp 26879 2014-09-21 11:24:51Z 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
12 #include "stdafx.h"
13 #include "landscape.h"
14 #include "command_func.h"
15 #include "viewport_func.h"
16 #include "company_base.h"
17 #include "town.h"
18 #include "bridge_map.h"
19 #include "genworld.h"
20 #include "autoslope.h"
21 #include "clear_func.h"
22 #include "water.h"
23 #include "window_func.h"
24 #include "company_gui.h"
25 #include "cheat_type.h"
26 #include "object.h"
27 #include "cargopacket.h"
28 #include "core/random_func.hpp"
29 #include "core/pool_func.hpp"
30 #include "object_map.h"
31 #include "object_base.h"
32 #include "newgrf_config.h"
33 #include "newgrf_object.h"
34 #include "date_func.h"
35 #include "newgrf_debug.h"
36 #include "vehicle_func.h"
37
38 #include "table/strings.h"
39 #include "table/object_land.h"
40
41 #include "safeguards.h"
42
43 ObjectPool _object_pool("Object");
44 INSTANTIATE_POOL_METHODS(Object)
45 uint16 Object::counts[NUM_OBJECTS];
46
52 /* static */ Object *Object::GetByTile(TileIndex tile)
53 {
54 return Object::Get(GetObjectIndex(tile));
55 }
56
63 ObjectType GetObjectType(TileIndex t)
64 {
65 assert(IsTileType(t, MP_OBJECT));
66 return Object::GetByTile(t)->type;
67 }
68
70 void InitializeObjects()
71 {
72 Object::ResetTypeCounts();
73 }
74
85 void BuildObject(ObjectType type, TileIndex tile, CompanyID owner, Town *town, uint8 view)
86 {
87 const ObjectSpec *spec = ObjectSpec::Get(type);
88
89 TileArea ta(tile, GB(spec->size, HasBit(view, 0) ? 4 : 0, 4), GB(spec->size, HasBit(view, 0) ? 0 : 4, 4));
90 Object *o = new Object();
91 o->type = type;
92 o->location = ta;
93 o->town = town == NULL ? CalcClosestTownFromTile(tile) : town;
94 o->build_date = _date;
95 o->view = view;
96
97 /* If nothing owns the object, the colour will be random. Otherwise
98 * get the colour from the company's livery settings. */
99 if (owner == OWNER_NONE) {
100 o->colour = Random();
101 } else {
102 const Livery *l = Company::Get(owner)->livery;
103 o->colour = l->colour1 + l->colour2 * 16;
104 }
105
106 /* If the object wants only one colour, then give it that colour. */
107 if ((spec->flags & OBJECT_FLAG_2CC_COLOUR) == 0) o->colour &= 0xF;
108
109 if (HasBit(spec->callback_mask, CBM_OBJ_COLOUR)) {
110 uint16 res = GetObjectCallback(CBID_OBJECT_COLOUR, o->colour, 0, spec, o, tile);
111 if (res != CALLBACK_FAILED) {
112 if (res >= 0x100) ErrorUnknownCallbackResult(spec->grf_prop.grffile->grfid, CBID_OBJECT_COLOUR, res);
113 o->colour = GB(res, 0, 8);
114 }
115 }
116
117 assert(o->town != NULL);
118
119 TILE_AREA_LOOP(t, ta) {
120 WaterClass wc = (IsWaterTile(t) ? GetWaterClass(t) : WATER_CLASS_INVALID);
121 /* Update company infrastructure counts for objects build on canals owned by nobody. */
122 if (wc == WATER_CLASS_CANAL && owner != OWNER_NONE && (IsTileOwner(tile, OWNER_NONE) || IsTileOwner(tile, OWNER_WATER))) {
123 Company::Get(owner)->infrastructure.water++;
124 DirtyCompanyInfrastructureWindows(owner);
125 }
126 MakeObject(t, owner, o->index, wc, Random());
127 MarkTileDirtyByTile(t);
128 }
129
130 Object::IncTypeCount(type);
131 if (spec->flags & OBJECT_FLAG_ANIMATION) TriggerObjectAnimation(o, OAT_BUILT, spec);
132 }
133
138 static void IncreaseAnimationStage(TileIndex tile)
139 {
140 TileArea ta = Object::GetByTile(tile)->location;
141 TILE_AREA_LOOP(t, ta) {
142 SetAnimationFrame(t, GetAnimationFrame(t) + 1);
143 MarkTileDirtyByTile(t);
144 }
145 }
146
148 #define GetCompanyHQSize GetAnimationFrame
149
150 #define IncreaseCompanyHQSize IncreaseAnimationStage
151
157 void UpdateCompanyHQ(TileIndex tile, uint score)
158 {
159 if (tile == INVALID_TILE) return;
160
161 byte val;
162 (val = 0, score < 170) ||
163 (val++, score < 350) ||
164 (val++, score < 520) ||
165 (val++, score < 720) ||
166 (val++, true);
167
168 while (GetCompanyHQSize(tile) < val) {
169 IncreaseCompanyHQSize(tile);
170 }
171 }
172
177 void UpdateObjectColours(const Company *c)
178 {
179 Object *obj;
180 FOR_ALL_OBJECTS(obj) {
181 Owner owner = GetTileOwner(obj->location.tile);
182 /* Not the current owner, so colour doesn't change. */
183 if (owner != c->index) continue;
184
185 const ObjectSpec *spec = ObjectSpec::GetByTile(obj->location.tile);
186 /* Using the object colour callback, so not using company colour. */
187 if (HasBit(spec->callback_mask, CBM_OBJ_COLOUR)) continue;
188
189 const Livery *l = c->livery;
190 obj->colour = ((spec->flags & OBJECT_FLAG_2CC_COLOUR) ? (l->colour2 * 16) : 0) + l->colour1;
191 }
192 }
193
194 extern CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge);
195 static CommandCost ClearTile_Object(TileIndex tile, DoCommandFlag flags);
196
206 CommandCost CmdBuildObject(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
207 {
208 CommandCost cost(EXPENSES_PROPERTY);
209
210 ObjectType type = (ObjectType)GB(p1, 0, 16);
211 if (type >= NUM_OBJECTS) return CMD_ERROR;
212 uint8 view = GB(p2, 0, 2);
213 const ObjectSpec *spec = ObjectSpec::Get(type);
214 if (_game_mode == GM_NORMAL && !spec->IsAvailable() && !_generating_world) return CMD_ERROR;
215 if ((_game_mode == GM_EDITOR || _generating_world) && !spec->WasEverAvailable()) return CMD_ERROR;
216
217 if ((spec->flags & OBJECT_FLAG_ONLY_IN_SCENEDIT) != 0 && ((!_generating_world && _game_mode != GM_EDITOR) || _current_company != OWNER_NONE)) return CMD_ERROR;
218 if ((spec->flags & OBJECT_FLAG_ONLY_IN_GAME) != 0 && (_generating_world || _game_mode != GM_NORMAL || _current_company > MAX_COMPANIES)) return CMD_ERROR;
219 if (view >= spec->views) return CMD_ERROR;
220
221 if (!Object::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_OBJECTS);
222 if (Town::GetNumItems() == 0) return_cmd_error(STR_ERROR_MUST_FOUND_TOWN_FIRST);
223
224 int size_x = GB(spec->size, HasBit(view, 0) ? 4 : 0, 4);
225 int size_y = GB(spec->size, HasBit(view, 0) ? 0 : 4, 4);
226 TileArea ta(tile, size_x, size_y);
227
228 if (type == OBJECT_OWNED_LAND) {
229 /* Owned land is special as it can be placed on any slope. */
230 cost.AddCost(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR));
231 } else {
232 /* Check the surface to build on. At this time we can't actually execute the
233 * the CLEAR_TILE commands since the newgrf callback later on can check
234 * some information about the tiles. */
235 bool allow_water = (spec->flags & (OBJECT_FLAG_BUILT_ON_WATER | OBJECT_FLAG_NOT_ON_LAND)) != 0;
236 bool allow_ground = (spec->flags & OBJECT_FLAG_NOT_ON_LAND) == 0;
237 TILE_AREA_LOOP(t, ta) {
238 if (HasTileWaterGround(t)) {
239 if (!allow_water) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
240 if (!IsWaterTile(t)) {
241 /* Normal water tiles don't have to be cleared. For all other tile types clear
242 * the tile but leave the water. */
243 cost.AddCost(DoCommand(t, 0, 0, flags & ~DC_NO_WATER & ~DC_EXEC, CMD_LANDSCAPE_CLEAR));
244 } else {
245 /* Can't build on water owned by another company. */
246 Owner o = GetTileOwner(t);
247 if (o != OWNER_NONE && o != OWNER_WATER) cost.AddCost(CheckOwnership(o, t));
248
249 /* However, the tile has to be clear of vehicles. */
250 cost.AddCost(EnsureNoVehicleOnGround(t));
251 }
252 } else {
253 if (!allow_ground) return_cmd_error(STR_ERROR_MUST_BE_BUILT_ON_WATER);
254 /* For non-water tiles, we'll have to clear it before building. */
255 cost.AddCost(DoCommand(t, 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR));
256 }
257 }
258
259 /* So, now the surface is checked... check the slope of said surface. */
260 int allowed_z;
261 if (GetTileSlope(tile, &allowed_z) != SLOPE_FLAT) allowed_z++;
262
263 TILE_AREA_LOOP(t, ta) {
264 uint16 callback = CALLBACK_FAILED;
265 if (HasBit(spec->callback_mask, CBM_OBJ_SLOPE_CHECK)) {
266 TileIndex diff = t - tile;
267 callback = GetObjectCallback(CBID_OBJECT_LAND_SLOPE_CHECK, GetTileSlope(t), TileY(diff) << 4 | TileX(diff), spec, NULL, t, view);
268 }
269
270 if (callback == CALLBACK_FAILED) {
271 cost.AddCost(CheckBuildableTile(t, 0, allowed_z, false, false));
272 } else {
273 /* The meaning of bit 10 is inverted for a grf version < 8. */
274 if (spec->grf_prop.grffile->grf_version < 8) ToggleBit(callback, 10);
275 CommandCost ret = GetErrorMessageFromLocationCallbackResult(callback, spec->grf_prop.grffile, STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
276 if (ret.Failed()) return ret;
277 }
278 }
279
280 if (flags & DC_EXEC) {
281 /* This is basically a copy of the loop above with the exception that we now
282 * execute the commands and don't check for errors, since that's already done. */
283 TILE_AREA_LOOP(t, ta) {
284 if (HasTileWaterGround(t)) {
285 if (!IsWaterTile(t)) {
286 DoCommand(t, 0, 0, (flags & ~DC_NO_WATER) | DC_NO_MODIFY_TOWN_RATING, CMD_LANDSCAPE_CLEAR);
287 }
288 } else {
289 DoCommand(t, 0, 0, flags | DC_NO_MODIFY_TOWN_RATING, CMD_LANDSCAPE_CLEAR);
290 }
291 }
292 }
293 }
294 if (cost.Failed()) return cost;
295
296 /* Finally do a check for bridges. */
297 TILE_AREA_LOOP(t, ta) {
298 if (IsBridgeAbove(t) && (
299 !(spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) ||
300 (GetTileMaxZ(t) + spec->height >= GetBridgeHeight(GetSouthernBridgeEnd(t))))) {
301 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
302 }
303 }
304
305 int hq_score = 0;
306 switch (type) {
307 case OBJECT_TRANSMITTER:
308 case OBJECT_LIGHTHOUSE:
309 if (!IsTileFlat(tile)) return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
310 break;
311
312 case OBJECT_OWNED_LAND:
313 if (IsTileType(tile, MP_OBJECT) &&
314 IsTileOwner(tile, _current_company) &&
315 IsObjectType(tile, OBJECT_OWNED_LAND)) {
316 return_cmd_error(STR_ERROR_YOU_ALREADY_OWN_IT);
317 }
318 break;
319
320 case OBJECT_HQ: {
321 Company *c = Company::Get(_current_company);
322 if (c->location_of_HQ != INVALID_TILE) {
323 /* We need to persuade a bit harder to remove the old HQ. */
324 _current_company = OWNER_WATER;
325 cost.AddCost(ClearTile_Object(c->location_of_HQ, flags));
326 _current_company = c->index;
327 }
328
329 if (flags & DC_EXEC) {
330 hq_score = UpdateCompanyRatingAndValue(c, false);
331 c->location_of_HQ = tile;
332 SetWindowDirty(WC_COMPANY, c->index);
333 }
334 break;
335 }
336
337 case OBJECT_STATUE:
338 /* This may never be constructed using this method. */
339 return CMD_ERROR;
340
341 default: // i.e. NewGRF provided.
342 break;
343 }
344
345 if (flags & DC_EXEC) {
346 BuildObject(type, tile, _current_company, NULL, view);
347
348 /* Make sure the HQ starts at the right size. */
349 if (type == OBJECT_HQ) UpdateCompanyHQ(tile, hq_score);
350 }
351
352 cost.AddCost(ObjectSpec::Get(type)->GetBuildCost() * size_x * size_y);
353 return cost;
354 }
355
356
357 static Foundation GetFoundation_Object(TileIndex tile, Slope tileh);
358
359 static void DrawTile_Object(TileInfo *ti)
360 {
361 ObjectType type = GetObjectType(ti->tile);
362 const ObjectSpec *spec = ObjectSpec::Get(type);
363
364 /* Fall back for when the object doesn't exist anymore. */
365 if (!spec->enabled) type = OBJECT_TRANSMITTER;
366
367 if ((spec->flags & OBJECT_FLAG_HAS_NO_FOUNDATION) == 0) DrawFoundation(ti, GetFoundation_Object(ti->tile, ti->tileh));
368
369 if (type < NEW_OBJECT_OFFSET) {
370 const DrawTileSprites *dts = NULL;
371 Owner to = GetTileOwner(ti->tile);
372 PaletteID palette = to == OWNER_NONE ? PAL_NONE : COMPANY_SPRITE_COLOUR(to);
373
374 if (type == OBJECT_HQ) {
375 TileIndex diff = ti->tile - Object::GetByTile(ti->tile)->location.tile;
376 dts = &_object_hq[GetCompanyHQSize(ti->tile) << 2 | TileY(diff) << 1 | TileX(diff)];
377 } else {
378 dts = &_objects[type];
379 }
380
381 if (spec->flags & OBJECT_FLAG_HAS_NO_FOUNDATION) {
382 /* If an object has no foundation, but tries to draw a (flat) ground
383 * type... we have to be nice and convert that for them. */
384 switch (dts->ground.sprite) {
385 case SPR_FLAT_BARE_LAND: DrawClearLandTile(ti, 0); break;
386 case SPR_FLAT_1_THIRD_GRASS_TILE: DrawClearLandTile(ti, 1); break;
387 case SPR_FLAT_2_THIRD_GRASS_TILE: DrawClearLandTile(ti, 2); break;
388 case SPR_FLAT_GRASS_TILE: DrawClearLandTile(ti, 3); break;
389 default: DrawGroundSprite(dts->ground.sprite, palette); break;
390 }
391 } else {
392 DrawGroundSprite(dts->ground.sprite, palette);
393 }
394
395 if (!IsInvisibilitySet(TO_STRUCTURES)) {
396 const DrawTileSeqStruct *dtss;
397 foreach_draw_tile_seq(dtss, dts->seq) {
398 AddSortableSpriteToDraw(
399 dtss->image.sprite, palette,
400 ti->x + dtss->delta_x, ti->y + dtss->delta_y,
401 dtss->size_x, dtss->size_y,
402 dtss->size_z, ti->z + dtss->delta_z,
403 IsTransparencySet(TO_STRUCTURES)
404 );
405 }
406 }
407 } else {
408 DrawNewObjectTile(ti, spec);
409 }
410
411 DrawBridgeMiddle(ti);
412 }
413
414 static int GetSlopePixelZ_Object(TileIndex tile, uint x, uint y)
415 {
416 if (IsObjectType(tile, OBJECT_OWNED_LAND)) {
417 int z;
418 Slope tileh = GetTilePixelSlope(tile, &z);
419
420 return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh);
421 } else {
422 return GetTileMaxPixelZ(tile);
423 }
424 }
425
426 static Foundation GetFoundation_Object(TileIndex tile, Slope tileh)
427 {
428 return IsObjectType(tile, OBJECT_OWNED_LAND) ? FOUNDATION_NONE : FlatteningFoundation(tileh);
429 }
430
435 static void ReallyClearObjectTile(Object *o)
436 {
437 Object::DecTypeCount(o->type);
438 TILE_AREA_LOOP(tile_cur, o->location) {
439 DeleteNewGRFInspectWindow(GSF_OBJECTS, tile_cur);
440
441 MakeWaterKeepingClass(tile_cur, GetTileOwner(tile_cur));
442 }
443 delete o;
444 }
445
446 SmallVector<ClearedObjectArea, 4> _cleared_object_areas;
447
453 ClearedObjectArea *FindClearedObject(TileIndex tile)
454 {
455 TileArea ta = TileArea(tile, 1, 1);
456
457 const ClearedObjectArea *end = _cleared_object_areas.End();
458 for (ClearedObjectArea *coa = _cleared_object_areas.Begin(); coa != end; coa++) {
459 if (coa->area.Intersects(ta)) return coa;
460 }
461
462 return NULL;
463 }
464
465 static CommandCost ClearTile_Object(TileIndex tile, DoCommandFlag flags)
466 {
467 /* Get to the northern most tile. */
468 Object *o = Object::GetByTile(tile);
469 TileArea ta = o->location;
470
471 ObjectType type = o->type;
472 const ObjectSpec *spec = ObjectSpec::Get(type);
473
474 CommandCost cost(EXPENSES_CONSTRUCTION, spec->GetClearCost() * ta.w * ta.h / 5);
475 if (spec->flags & OBJECT_FLAG_CLEAR_INCOME) cost.MultiplyCost(-1); // They get an income!
476
477 /* Towns can't remove any objects. */
478 if (_current_company == OWNER_TOWN) return CMD_ERROR;
479
480 /* Water can remove everything! */
481 if (_current_company != OWNER_WATER) {
482 if ((flags & DC_NO_WATER) && IsTileOnWater(tile)) {
483 /* There is water under the object, treat it as water tile. */
484 return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
485 } else if (!(spec->flags & OBJECT_FLAG_AUTOREMOVE) && (flags & DC_AUTO)) {
486 /* No automatic removal by overbuilding stuff. */
487 return_cmd_error(type == OBJECT_HQ ? STR_ERROR_COMPANY_HEADQUARTERS_IN : STR_ERROR_OBJECT_IN_THE_WAY);
488 } else if (_game_mode == GM_EDITOR) {
489 /* No further limitations for the editor. */
490 } else if (GetTileOwner(tile) == OWNER_NONE) {
491 /* Owned by nobody and unremovable, so we can only remove it with brute force! */
492 if (!_cheats.magic_bulldozer.value && (spec->flags & OBJECT_FLAG_CANNOT_REMOVE) != 0) return CMD_ERROR;
493 } else if (CheckTileOwnership(tile).Failed()) {
494 /* We don't own it!. */
495 return_cmd_error(STR_ERROR_OWNED_BY);
496 } else if ((spec->flags & OBJECT_FLAG_CANNOT_REMOVE) != 0 && (spec->flags & OBJECT_FLAG_AUTOREMOVE) == 0) {
497 /* In the game editor or with cheats we can remove, otherwise we can't. */
498 if (!_cheats.magic_bulldozer.value) return CMD_ERROR;
499
500 /* Removing with the cheat costs more in TTDPatch / the specs. */
501 cost.MultiplyCost(25);
502 }
503 } else if ((spec->flags & (OBJECT_FLAG_BUILT_ON_WATER | OBJECT_FLAG_NOT_ON_LAND)) != 0) {
504 /* Water can't remove objects that are buildable on water. */
505 return CMD_ERROR;
506 }
507
508 switch (type) {
509 case OBJECT_HQ: {
510 Company *c = Company::Get(GetTileOwner(tile));
511 if (flags & DC_EXEC) {
512 c->location_of_HQ = INVALID_TILE; // reset HQ position
513 SetWindowDirty(WC_COMPANY, c->index);
514 CargoPacket::InvalidateAllFrom(ST_HEADQUARTERS, c->index);
515 }
516
517 /* cost of relocating company is 1% of company value */
518 cost = CommandCost(EXPENSES_PROPERTY, CalculateCompanyValue(c) / 100);
519 break;
520 }
521
522 case OBJECT_STATUE:
523 if (flags & DC_EXEC) {
524 Town *town = o->town;
525 ClrBit(town->statues, GetTileOwner(tile));
526 SetWindowDirty(WC_TOWN_AUTHORITY, town->index);
527 }
528 break;
529
530 default:
531 break;
532 }
533
534 ClearedObjectArea *cleared_area = _cleared_object_areas.Append();
535 cleared_area->first_tile = tile;
536 cleared_area->area = ta;
537
538 if (flags & DC_EXEC) ReallyClearObjectTile(o);
539
540 return cost;
541 }
542
543 static void AddAcceptedCargo_Object(TileIndex tile, CargoArray &acceptance, uint32 *always_accepted)
544 {
545 if (!IsObjectType(tile, OBJECT_HQ)) return;
546
547 /* HQ accepts passenger and mail; but we have to divide the values
548 * between 4 tiles it occupies! */
549
550 /* HQ level (depends on company performance) in the range 1..5. */
551 uint level = GetCompanyHQSize(tile) + 1;
552
553 /* Top town building generates 10, so to make HQ interesting, the top
554 * type makes 20. */
555 acceptance[CT_PASSENGERS] += max(1U, level);
556 SetBit(*always_accepted, CT_PASSENGERS);
557
558 /* Top town building generates 4, HQ can make up to 8. The
559 * proportion passengers:mail is different because such a huge
560 * commercial building generates unusually high amount of mail
561 * correspondence per physical visitor. */
562 acceptance[CT_MAIL] += max(1U, level / 2);
563 SetBit(*always_accepted, CT_MAIL);
564 }
565
566
567 static void GetTileDesc_Object(TileIndex tile, TileDesc *td)
568 {
569 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
570 td->str = spec->name;
571 td->owner[0] = GetTileOwner(tile);
572 td->build_date = Object::GetByTile(tile)->build_date;
573
574 if (spec->grf_prop.grffile != NULL) {
575 td->grf = GetGRFConfig(spec->grf_prop.grffile->grfid)->GetName();
576 }
577 }
578
579 static void TileLoop_Object(TileIndex tile)
580 {
581 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
582 if (spec->flags & OBJECT_FLAG_ANIMATION) {
583 Object *o = Object::GetByTile(tile);
584 TriggerObjectTileAnimation(o, tile, OAT_TILELOOP, spec);
585 if (o->location.tile == tile) TriggerObjectAnimation(o, OAT_256_TICKS, spec);
586 }
587
588 if (IsTileOnWater(tile)) TileLoop_Water(tile);
589
590 if (!IsObjectType(tile, OBJECT_HQ)) return;
591
592 /* HQ accepts passenger and mail; but we have to divide the values
593 * between 4 tiles it occupies! */
594
595 /* HQ level (depends on company performance) in the range 1..5. */
596 uint level = GetCompanyHQSize(tile) + 1;
597 assert(level < 6);
598
599 StationFinder stations(TileArea(tile, 2, 2));
600
601 uint r = Random();
602 /* Top town buildings generate 250, so the top HQ type makes 256. */
603 if (GB(r, 0, 8) < (256 / 4 / (6 - level))) {
604 uint amt = GB(r, 0, 8) / 8 / 4 + 1;
605 if (EconomyIsInRecession()) amt = (amt + 1) >> 1;
606 MoveGoodsToStation(CT_PASSENGERS, amt, ST_HEADQUARTERS, GetTileOwner(tile), stations.GetStations());
607 }
608
609 /* Top town building generates 90, HQ can make up to 196. The
610 * proportion passengers:mail is about the same as in the acceptance
611 * equations. */
612 if (GB(r, 8, 8) < (196 / 4 / (6 - level))) {
613 uint amt = GB(r, 8, 8) / 8 / 4 + 1;
614 if (EconomyIsInRecession()) amt = (amt + 1) >> 1;
615 MoveGoodsToStation(CT_MAIL, amt, ST_HEADQUARTERS, GetTileOwner(tile), stations.GetStations());
616 }
617 }
618
619
620 static TrackStatus GetTileTrackStatus_Object(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
621 {
622 return 0;
623 }
624
625 static bool ClickTile_Object(TileIndex tile)
626 {
627 if (!IsObjectType(tile, OBJECT_HQ)) return false;
628
629 ShowCompany(GetTileOwner(tile));
630 return true;
631 }
632
633 static void AnimateTile_Object(TileIndex tile)
634 {
635 AnimateNewObjectTile(tile);
636 }
637
644 static bool HasTransmitter(TileIndex tile, void *user)
645 {
646 return IsObjectTypeTile(tile, OBJECT_TRANSMITTER);
647 }
648
653 static bool TryBuildLightHouse()
654 {
655 uint maxx = MapMaxX();
656 uint maxy = MapMaxY();
657 uint r = Random();
658
659 /* Scatter the lighthouses more evenly around the perimeter */
660 int perimeter = (GB(r, 16, 16) % (2 * (maxx + maxy))) - maxy;
661 DiagDirection dir;
662 for (dir = DIAGDIR_NE; perimeter > 0; dir++) {
663 perimeter -= (DiagDirToAxis(dir) == AXIS_X) ? maxx : maxy;
664 }
665
666 TileIndex tile;
667 switch (dir) {
668 default:
669 case DIAGDIR_NE: tile = TileXY(maxx - 1, r % maxy); break;
670 case DIAGDIR_SE: tile = TileXY(r % maxx, 1); break;
671 case DIAGDIR_SW: tile = TileXY(1, r % maxy); break;
672 case DIAGDIR_NW: tile = TileXY(r % maxx, maxy - 1); break;
673 }
674
675 /* Only build lighthouses at tiles where the border is sea. */
676 if (!IsTileType(tile, MP_WATER)) return false;
677
678 for (int j = 0; j < 19; j++) {
679 int h;
680 if (IsTileType(tile, MP_CLEAR) && IsTileFlat(tile, &h) && h <= 2 && !IsBridgeAbove(tile)) {
681 BuildObject(OBJECT_LIGHTHOUSE, tile);
682 assert(tile < MapSize());
683 return true;
684 }
685 tile += TileOffsByDiagDir(dir);
686 if (!IsValidTile(tile)) return false;
687 }
688 return false;
689 }
690
695 static bool TryBuildTransmitter()
696 {
697 TileIndex tile = RandomTile();
698 int h;
699 if (IsTileType(tile, MP_CLEAR) && IsTileFlat(tile, &h) && h >= 4 && !IsBridgeAbove(tile)) {
700 TileIndex t = tile;
701 if (CircularTileSearch(&t, 9, HasTransmitter, NULL)) return false;
702
703 BuildObject(OBJECT_TRANSMITTER, tile);
704 return true;
705 }
706 return false;
707 }
708
709 void GenerateObjects()
710 {
711 /* Set a guestimate on how much we progress */
712 SetGeneratingWorldProgress(GWP_OBJECT, NUM_OBJECTS);
713
714 /* Determine number of water tiles at map border needed for freeform_edges */
715 uint num_water_tiles = 0;
716 if (_settings_game.construction.freeform_edges) {
717 for (uint x = 0; x < MapMaxX(); x++) {
718 if (IsTileType(TileXY(x, 1), MP_WATER)) num_water_tiles++;
719 if (IsTileType(TileXY(x, MapMaxY() - 1), MP_WATER)) num_water_tiles++;
720 }
721 for (uint y = 1; y < MapMaxY() - 1; y++) {
722 if (IsTileType(TileXY(1, y), MP_WATER)) num_water_tiles++;
723 if (IsTileType(TileXY(MapMaxX() - 1, y), MP_WATER)) num_water_tiles++;
724 }
725 }
726
727 /* Iterate over all possible object types */
728 for (uint i = 0; i < NUM_OBJECTS; i++) {
729 const ObjectSpec *spec = ObjectSpec::Get(i);
730
731 /* Continue, if the object was never available till now or shall not be placed */
732 if (!spec->WasEverAvailable() || spec->generate_amount == 0) continue;
733
734 uint16 amount = spec->generate_amount;
735
736 /* Scale by map size */
737 if ((spec->flags & OBJECT_FLAG_SCALE_BY_WATER) && _settings_game.construction.freeform_edges) {
738 /* Scale the amount of lighthouses with the amount of land at the borders.
739 * The -6 is because the top borders are MP_VOID (-2) and all corners
740 * are counted twice (-4). */
741 amount = ScaleByMapSize1D(amount * num_water_tiles) / (2 * MapMaxY() + 2 * MapMaxX() - 6);
742 } else if (spec->flags & OBJECT_FLAG_SCALE_BY_WATER) {
743 amount = ScaleByMapSize1D(amount);
744 } else {
745 amount = ScaleByMapSize(amount);
746 }
747
748 /* Now try to place the requested amount of this object */
749 for (uint j = ScaleByMapSize(1000); j != 0 && amount != 0 && Object::CanAllocateItem(); j--) {
750 switch (i) {
751 case OBJECT_TRANSMITTER:
752 if (TryBuildTransmitter()) amount--;
753 break;
754
755 case OBJECT_LIGHTHOUSE:
756 if (TryBuildLightHouse()) amount--;
757 break;
758
759 default:
760 uint8 view = RandomRange(spec->views);
761 if (CmdBuildObject(RandomTile(), DC_EXEC | DC_AUTO | DC_NO_TEST_TOWN_RATING | DC_NO_MODIFY_TOWN_RATING, i, view, NULL).Succeeded()) amount--;
762 break;
763 }
764 }
765 IncreaseGeneratingWorldProgress(GWP_OBJECT);
766 }
767 }
768
769 static void ChangeTileOwner_Object(TileIndex tile, Owner old_owner, Owner new_owner)
770 {
771 if (!IsTileOwner(tile, old_owner)) return;
772
773 if (IsObjectType(tile, OBJECT_OWNED_LAND) && new_owner != INVALID_OWNER) {
774 SetTileOwner(tile, new_owner);
775 } else if (IsObjectType(tile, OBJECT_STATUE)) {
776 Town *t = Object::GetByTile(tile)->town;
777 ClrBit(t->statues, old_owner);
778 if (new_owner != INVALID_OWNER && !HasBit(t->statues, new_owner)) {
779 /* Transfer ownership to the new company */
780 SetBit(t->statues, new_owner);
781 SetTileOwner(tile, new_owner);
782 } else {
783 ReallyClearObjectTile(Object::GetByTile(tile));
784 }
785
786 SetWindowDirty(WC_TOWN_AUTHORITY, t->index);
787 } else {
788 ReallyClearObjectTile(Object::GetByTile(tile));
789 }
790 }
791
792 static CommandCost TerraformTile_Object(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
793 {
794 ObjectType type = GetObjectType(tile);
795
796 if (type == OBJECT_OWNED_LAND) {
797 /* Owned land remains unsold */
798 CommandCost ret = CheckTileOwnership(tile);
799 if (ret.Succeeded()) return CommandCost();
800 } else if (AutoslopeEnabled() && type != OBJECT_TRANSMITTER && type != OBJECT_LIGHTHOUSE) {
801 /* Behaviour:
802 * - Both new and old slope must not be steep.
803 * - TileMaxZ must not be changed.
804 * - Allow autoslope by default.
805 * - Disallow autoslope if callback succeeds and returns non-zero.
806 */
807 Slope tileh_old = GetTileSlope(tile);
808 /* TileMaxZ must not be changed. Slopes must not be steep. */
809 if (!IsSteepSlope(tileh_old) && !IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
810 const ObjectSpec *spec = ObjectSpec::Get(type);
811
812 /* Call callback 'disable autosloping for objects'. */
813 if (HasBit(spec->callback_mask, CBM_OBJ_AUTOSLOPE)) {
814 /* If the callback fails, allow autoslope. */
815 uint16 res = GetObjectCallback(CBID_OBJECT_AUTOSLOPE, 0, 0, spec, Object::GetByTile(tile), tile);
816 if (res == CALLBACK_FAILED || !ConvertBooleanCallback(spec->grf_prop.grffile, CBID_OBJECT_AUTOSLOPE, res)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
817 } else if (spec->enabled) {
818 /* allow autoslope */
819 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
820 }
821 }
822 }
823
824 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
825 }
826
827 extern const TileTypeProcs _tile_type_object_procs = {
828 DrawTile_Object, // draw_tile_proc
829 GetSlopePixelZ_Object, // get_slope_z_proc
830 ClearTile_Object, // clear_tile_proc
831 AddAcceptedCargo_Object, // add_accepted_cargo_proc
832 GetTileDesc_Object, // get_tile_desc_proc
833 GetTileTrackStatus_Object, // get_tile_track_status_proc
834 ClickTile_Object, // click_tile_proc
835 AnimateTile_Object, // animate_tile_proc
836 TileLoop_Object, // tile_loop_proc
837 ChangeTileOwner_Object, // change_tile_owner_proc
838 NULL, // add_produced_cargo_proc
839 NULL, // vehicle_enter_tile_proc
840 GetFoundation_Object, // get_foundation_proc
841 TerraformTile_Object, // terraform_tile_proc
842 };