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00012 #include "stdafx.h"
00013 #include "road_internal.h"
00014 #include "road_cmd.h"
00015 #include "landscape.h"
00016 #include "viewport_func.h"
00017 #include "cmd_helper.h"
00018 #include "command_func.h"
00019 #include "industry.h"
00020 #include "station_base.h"
00021 #include "company_base.h"
00022 #include "news_func.h"
00023 #include "gui.h"
00024 #include "unmovable_map.h"
00025 #include "variables.h"
00026 #include "genworld.h"
00027 #include "newgrf.h"
00028 #include "newgrf_house.h"
00029 #include "newgrf_commons.h"
00030 #include "newgrf_text.h"
00031 #include "autoslope.h"
00032 #include "tunnelbridge_map.h"
00033 #include "unmovable_map.h"
00034 #include "strings_func.h"
00035 #include "window_func.h"
00036 #include "string_func.h"
00037 #include "newgrf_cargo.h"
00038 #include "cheat_type.h"
00039 #include "functions.h"
00040 #include "animated_tile_func.h"
00041 #include "date_func.h"
00042 #include "subsidy_func.h"
00043 #include "core/smallmap_type.hpp"
00044 #include "core/pool_func.hpp"
00045 #include "town.h"
00046 #include "townname_func.h"
00047 #include "townname_type.h"
00048 #include "core/random_func.hpp"
00049
00050 #include "table/strings.h"
00051 #include "table/town_land.h"
00052
00053 static Town *_cleared_town;
00054 static int _cleared_town_rating;
00055 TownID _new_town_id;
00056
00057
00058 TownPool _town_pool("Town");
00059 INSTANTIATE_POOL_METHODS(Town)
00060
00061 Town::~Town()
00062 {
00063 free(this->name);
00064
00065 if (CleaningPool()) return;
00066
00067 Industry *i;
00068
00069
00070
00071 DeleteWindowById(WC_TOWN_VIEW, this->index);
00072
00073
00074 FOR_ALL_INDUSTRIES(i) if (i->town == this) delete i;
00075
00076
00077 for (TileIndex tile = 0; tile < MapSize(); ++tile) {
00078 switch (GetTileType(tile)) {
00079 case MP_HOUSE:
00080 if (Town::GetByTile(tile) == this) DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00081 break;
00082
00083 case MP_ROAD:
00084
00085 if (HasTownOwnedRoad(tile) && GetTownIndex(tile) == this->index) {
00086 DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00087 }
00088 break;
00089
00090 case MP_TUNNELBRIDGE:
00091 if (IsTileOwner(tile, OWNER_TOWN) &&
00092 ClosestTownFromTile(tile, UINT_MAX) == this)
00093 DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00094 break;
00095
00096 case MP_UNMOVABLE:
00097 if (GetUnmovableType(tile) == UNMOVABLE_STATUE && GetStatueTownID(tile) == this->index) {
00098 DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00099 }
00100 break;
00101
00102 default:
00103 break;
00104 }
00105 }
00106
00107 DeleteSubsidyWith(ST_TOWN, this->index);
00108 CargoPacket::InvalidateAllFrom(ST_TOWN, this->index);
00109 MarkWholeScreenDirty();
00110 }
00111
00112
00118 void Town::PostDestructor(size_t index)
00119 {
00120 InvalidateWindowData(WC_TOWN_DIRECTORY, 0, 0);
00121 UpdateNearestTownForRoadTiles(false);
00122 }
00123
00127 void Town::InitializeLayout(TownLayout layout)
00128 {
00129 if (layout != TL_RANDOM) {
00130 this->layout = layout;
00131 return;
00132 }
00133
00134 this->layout = TileHash(TileX(this->xy), TileY(this->xy)) % (NUM_TLS - 1);
00135 }
00136
00141 Town *Town::GetRandom()
00142 {
00143 if (Town::GetNumItems() == 0) return NULL;
00144 int num = RandomRange((uint16)Town::GetNumItems());
00145 size_t index = MAX_UVALUE(size_t);
00146
00147 while (num >= 0) {
00148 num--;
00149 index++;
00150
00151
00152 while (!Town::IsValidID(index)) {
00153 index++;
00154 assert(index < Town::GetPoolSize());
00155 }
00156 }
00157
00158 return Town::Get(index);
00159 }
00160
00161 Money HouseSpec::GetRemovalCost() const
00162 {
00163 return (_price[PR_CLEAR_HOUSE] * this->removal_cost) >> 8;
00164 }
00165
00166
00167 static int _grow_town_result;
00168
00169
00170 enum TownGrowthResult {
00171 GROWTH_SUCCEED = -1,
00172 GROWTH_SEARCH_STOPPED = 0
00173
00174 };
00175
00176 static bool BuildTownHouse(Town *t, TileIndex tile);
00177 static Town *CreateRandomTown(uint attempts, uint32 townnameparts, TownSize size, bool city, TownLayout layout);
00178
00179 static void TownDrawHouseLift(const TileInfo *ti)
00180 {
00181 AddChildSpriteScreen(SPR_LIFT, PAL_NONE, 14, 60 - GetLiftPosition(ti->tile));
00182 }
00183
00184 typedef void TownDrawTileProc(const TileInfo *ti);
00185 static TownDrawTileProc * const _town_draw_tile_procs[1] = {
00186 TownDrawHouseLift
00187 };
00188
00194 static inline DiagDirection RandomDiagDir()
00195 {
00196 return (DiagDirection)(3 & Random());
00197 }
00198
00204 static void DrawTile_Town(TileInfo *ti)
00205 {
00206 HouseID house_id = GetHouseType(ti->tile);
00207
00208 if (house_id >= NEW_HOUSE_OFFSET) {
00209
00210
00211
00212 if (HouseSpec::Get(house_id)->spritegroup != NULL) {
00213 DrawNewHouseTile(ti, house_id);
00214 return;
00215 } else {
00216 house_id = HouseSpec::Get(house_id)->substitute_id;
00217 }
00218 }
00219
00220
00221 const DrawBuildingsTileStruct *dcts = &_town_draw_tile_data[house_id << 4 | TileHash2Bit(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)];
00222
00223 if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
00224
00225 DrawGroundSprite(dcts->ground.sprite, dcts->ground.pal);
00226
00227
00228 if (IsInvisibilitySet(TO_HOUSES)) return;
00229
00230
00231 SpriteID image = dcts->building.sprite;
00232 if (image != 0) {
00233 AddSortableSpriteToDraw(image, dcts->building.pal,
00234 ti->x + dcts->subtile_x,
00235 ti->y + dcts->subtile_y,
00236 dcts->width,
00237 dcts->height,
00238 dcts->dz,
00239 ti->z,
00240 IsTransparencySet(TO_HOUSES)
00241 );
00242
00243 if (IsTransparencySet(TO_HOUSES)) return;
00244 }
00245
00246 {
00247 int proc = dcts->draw_proc - 1;
00248
00249 if (proc >= 0) _town_draw_tile_procs[proc](ti);
00250 }
00251 }
00252
00253 static uint GetSlopeZ_Town(TileIndex tile, uint x, uint y)
00254 {
00255 return GetTileMaxZ(tile);
00256 }
00257
00259 static Foundation GetFoundation_Town(TileIndex tile, Slope tileh)
00260 {
00261 HouseID hid = GetHouseType(tile);
00262
00263
00264
00265
00266
00267 if (hid >= NEW_HOUSE_OFFSET) {
00268 const HouseSpec *hs = HouseSpec::Get(hid);
00269 if (hs->spritegroup != NULL && HasBit(hs->callback_mask, CBM_HOUSE_DRAW_FOUNDATIONS)) {
00270 uint32 callback_res = GetHouseCallback(CBID_HOUSE_DRAW_FOUNDATIONS, 0, 0, hid, Town::GetByTile(tile), tile);
00271 if (callback_res == 0) return FOUNDATION_NONE;
00272 }
00273 }
00274 return FlatteningFoundation(tileh);
00275 }
00276
00283 static void AnimateTile_Town(TileIndex tile)
00284 {
00285 if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {
00286 AnimateNewHouseTile(tile);
00287 return;
00288 }
00289
00290 if (_tick_counter & 3) return;
00291
00292
00293
00294
00295
00296 if (!(HouseSpec::Get(GetHouseType(tile))->building_flags & BUILDING_IS_ANIMATED)) {
00297 DeleteAnimatedTile(tile);
00298 return;
00299 }
00300
00301 if (!LiftHasDestination(tile)) {
00302 uint i;
00303
00304
00305
00306
00307
00308 do {
00309 i = RandomRange(7);
00310 } while (i == 1 || i * 6 == GetLiftPosition(tile));
00311
00312 SetLiftDestination(tile, i);
00313 }
00314
00315 int pos = GetLiftPosition(tile);
00316 int dest = GetLiftDestination(tile) * 6;
00317 pos += (pos < dest) ? 1 : -1;
00318 SetLiftPosition(tile, pos);
00319
00320 if (pos == dest) {
00321 HaltLift(tile);
00322 DeleteAnimatedTile(tile);
00323 }
00324
00325 MarkTileDirtyByTile(tile);
00326 }
00327
00334 static bool IsCloseToTown(TileIndex tile, uint dist)
00335 {
00336 const Town *t;
00337
00338 FOR_ALL_TOWNS(t) {
00339 if (DistanceManhattan(tile, t->xy) < dist) return true;
00340 }
00341 return false;
00342 }
00343
00348 void Town::UpdateVirtCoord()
00349 {
00350 Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
00351 SetDParam(0, this->index);
00352 SetDParam(1, this->population);
00353 this->sign.UpdatePosition(pt.x, pt.y - 24,
00354 _settings_client.gui.population_in_label ? STR_VIEWPORT_TOWN_POP : STR_VIEWPORT_TOWN);
00355
00356 SetWindowDirty(WC_TOWN_VIEW, this->index);
00357 }
00358
00360 void UpdateAllTownVirtCoords()
00361 {
00362 Town *t;
00363
00364 FOR_ALL_TOWNS(t) {
00365 t->UpdateVirtCoord();
00366 }
00367 }
00368
00374 static void ChangePopulation(Town *t, int mod)
00375 {
00376 t->population += mod;
00377 SetWindowDirty(WC_TOWN_VIEW, t->index);
00378 t->UpdateVirtCoord();
00379
00380 InvalidateWindowData(WC_TOWN_DIRECTORY, 0, 1);
00381 }
00382
00388 uint32 GetWorldPopulation()
00389 {
00390 uint32 pop = 0;
00391 const Town *t;
00392
00393 FOR_ALL_TOWNS(t) pop += t->population;
00394 return pop;
00395 }
00396
00401 static void MakeSingleHouseBigger(TileIndex tile)
00402 {
00403 assert(IsTileType(tile, MP_HOUSE));
00404
00405
00406 if (LiftHasDestination(tile)) return;
00407
00408
00409 IncHouseConstructionTick(tile);
00410 if (GetHouseConstructionTick(tile) != 0) return;
00411
00412 const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
00413
00414
00415 if (HasBit(hs->callback_mask, CBM_HOUSE_CONSTRUCTION_STATE_CHANGE)) {
00416 uint16 callback_res = GetHouseCallback(CBID_HOUSE_CONSTRUCTION_STATE_CHANGE, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
00417 if (callback_res != CALLBACK_FAILED) ChangeHouseAnimationFrame(hs->grffile, tile, callback_res);
00418 }
00419
00420 if (IsHouseCompleted(tile)) {
00421
00422
00423 ChangePopulation(Town::GetByTile(tile), hs->population);
00424 ResetHouseAge(tile);
00425 }
00426 MarkTileDirtyByTile(tile);
00427 }
00428
00432 static void MakeTownHouseBigger(TileIndex tile)
00433 {
00434 uint flags = HouseSpec::Get(GetHouseType(tile))->building_flags;
00435 if (flags & BUILDING_HAS_1_TILE) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));
00436 if (flags & BUILDING_2_TILES_Y) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));
00437 if (flags & BUILDING_2_TILES_X) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));
00438 if (flags & BUILDING_HAS_4_TILES) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));
00439 }
00440
00447 static void TileLoop_Town(TileIndex tile)
00448 {
00449 HouseID house_id = GetHouseType(tile);
00450
00451
00452
00453 if (house_id >= NEW_HOUSE_OFFSET && !NewHouseTileLoop(tile)) return;
00454
00455 if (!IsHouseCompleted(tile)) {
00456
00457 MakeTownHouseBigger(tile);
00458 return;
00459 }
00460
00461 const HouseSpec *hs = HouseSpec::Get(house_id);
00462
00463
00464 if ((hs->building_flags & BUILDING_IS_ANIMATED) &&
00465 house_id < NEW_HOUSE_OFFSET &&
00466 !LiftHasDestination(tile) &&
00467 Chance16(1, 2)) {
00468 AddAnimatedTile(tile);
00469 }
00470
00471 Town *t = Town::GetByTile(tile);
00472 uint32 r = Random();
00473
00474 StationFinder stations(TileArea(tile, 1, 1));
00475
00476 if (HasBit(hs->callback_mask, CBM_HOUSE_PRODUCE_CARGO)) {
00477 for (uint i = 0; i < 256; i++) {
00478 uint16 callback = GetHouseCallback(CBID_HOUSE_PRODUCE_CARGO, i, r, house_id, t, tile);
00479
00480 if (callback == CALLBACK_FAILED || callback == CALLBACK_HOUSEPRODCARGO_END) break;
00481
00482 CargoID cargo = GetCargoTranslation(GB(callback, 8, 7), hs->grffile);
00483 if (cargo == CT_INVALID) continue;
00484
00485 uint amt = GB(callback, 0, 8);
00486 if (amt == 0) continue;
00487
00488 uint moved = MoveGoodsToStation(cargo, amt, ST_TOWN, t->index, stations.GetStations());
00489
00490 const CargoSpec *cs = CargoSpec::Get(cargo);
00491 switch (cs->town_effect) {
00492 case TE_PASSENGERS:
00493 t->new_max_pass += amt;
00494 t->new_act_pass += moved;
00495 break;
00496
00497 case TE_MAIL:
00498 t->new_max_mail += amt;
00499 t->new_act_mail += moved;
00500 break;
00501
00502 default:
00503 break;
00504 }
00505 }
00506 } else {
00507 if (GB(r, 0, 8) < hs->population) {
00508 uint amt = GB(r, 0, 8) / 8 + 1;
00509
00510 if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
00511 t->new_max_pass += amt;
00512 t->new_act_pass += MoveGoodsToStation(CT_PASSENGERS, amt, ST_TOWN, t->index, stations.GetStations());
00513 }
00514
00515 if (GB(r, 8, 8) < hs->mail_generation) {
00516 uint amt = GB(r, 8, 8) / 8 + 1;
00517
00518 if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
00519 t->new_max_mail += amt;
00520 t->new_act_mail += MoveGoodsToStation(CT_MAIL, amt, ST_TOWN, t->index, stations.GetStations());
00521 }
00522 }
00523
00524 _current_company = OWNER_TOWN;
00525
00526 if ((hs->building_flags & BUILDING_HAS_1_TILE) &&
00527 HasBit(t->flags, TOWN_IS_FUNDED) &&
00528 CanDeleteHouse(tile) &&
00529 GetHouseAge(tile) >= hs->minimum_life &&
00530 --t->time_until_rebuild == 0) {
00531 t->time_until_rebuild = GB(r, 16, 8) + 192;
00532
00533 ClearTownHouse(t, tile);
00534
00535
00536 if (GB(r, 24, 8) >= 12) BuildTownHouse(t, tile);
00537 }
00538
00539 _current_company = OWNER_NONE;
00540 }
00541
00542 static CommandCost ClearTile_Town(TileIndex tile, DoCommandFlag flags)
00543 {
00544 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
00545 if (!CanDeleteHouse(tile)) return CMD_ERROR;
00546
00547 const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
00548
00549 CommandCost cost(EXPENSES_CONSTRUCTION);
00550 cost.AddCost(hs->GetRemovalCost());
00551
00552 int rating = hs->remove_rating_decrease;
00553 _cleared_town_rating += rating;
00554 Town *t = _cleared_town = Town::GetByTile(tile);
00555
00556 if (Company::IsValidID(_current_company)) {
00557 if (rating > t->ratings[_current_company] && !(flags & DC_NO_TEST_TOWN_RATING) && !_cheats.magic_bulldozer.value) {
00558 SetDParam(0, t->index);
00559 return_cmd_error(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS);
00560 }
00561 }
00562
00563 ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM, flags);
00564 if (flags & DC_EXEC) {
00565 ClearTownHouse(t, tile);
00566 }
00567
00568 return cost;
00569 }
00570
00571 static void AddProducedCargo_Town(TileIndex tile, CargoArray &produced)
00572 {
00573 HouseID house_id = GetHouseType(tile);
00574 const HouseSpec *hs = HouseSpec::Get(house_id);
00575 Town *t = Town::GetByTile(tile);
00576
00577 if (HasBit(hs->callback_mask, CBM_HOUSE_PRODUCE_CARGO)) {
00578 for (uint i = 0; i < 256; i++) {
00579 uint16 callback = GetHouseCallback(CBID_HOUSE_PRODUCE_CARGO, i, 0, house_id, t, tile);
00580
00581 if (callback == CALLBACK_FAILED || callback == CALLBACK_HOUSEPRODCARGO_END) break;
00582
00583 CargoID cargo = GetCargoTranslation(GB(callback, 8, 7), hs->grffile);
00584
00585 if (cargo == CT_INVALID) continue;
00586 produced[cargo]++;
00587 }
00588 } else {
00589 if (hs->population > 0) {
00590 produced[CT_PASSENGERS]++;
00591 }
00592 if (hs->mail_generation > 0) {
00593 produced[CT_MAIL]++;
00594 }
00595 }
00596 }
00597
00598 static inline void AddAcceptedCargoSetMask(CargoID cargo, uint amount, CargoArray &acceptance, uint32 *always_accepted)
00599 {
00600 if (cargo == CT_INVALID || amount == 0) return;
00601 acceptance[cargo] += amount;
00602 SetBit(*always_accepted, cargo);
00603 }
00604
00605 static void AddAcceptedCargo_Town(TileIndex tile, CargoArray &acceptance, uint32 *always_accepted)
00606 {
00607 const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
00608 CargoID accepts[3];
00609
00610
00611 for (uint8 i = 0; i < lengthof(accepts); i++) {
00612 accepts[i] = hs->accepts_cargo[i];
00613 }
00614
00615
00616 if (HasBit(hs->callback_mask, CBM_HOUSE_ACCEPT_CARGO)) {
00617 uint16 callback = GetHouseCallback(CBID_HOUSE_ACCEPT_CARGO, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
00618 if (callback != CALLBACK_FAILED) {
00619
00620 accepts[0] = GetCargoTranslation(GB(callback, 0, 5), hs->grffile);
00621 accepts[1] = GetCargoTranslation(GB(callback, 5, 5), hs->grffile);
00622 accepts[2] = GetCargoTranslation(GB(callback, 10, 5), hs->grffile);
00623 }
00624 }
00625
00626
00627 if (HasBit(hs->callback_mask, CBM_HOUSE_CARGO_ACCEPTANCE)) {
00628 uint16 callback = GetHouseCallback(CBID_HOUSE_CARGO_ACCEPTANCE, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
00629 if (callback != CALLBACK_FAILED) {
00630 AddAcceptedCargoSetMask(accepts[0], GB(callback, 0, 4), acceptance, always_accepted);
00631 AddAcceptedCargoSetMask(accepts[1], GB(callback, 4, 4), acceptance, always_accepted);
00632 if (_settings_game.game_creation.landscape != LT_TEMPERATE && HasBit(callback, 12)) {
00633
00634 AddAcceptedCargoSetMask(CT_FOOD, GB(callback, 8, 4), acceptance, always_accepted);
00635 } else {
00636 AddAcceptedCargoSetMask(accepts[2], GB(callback, 8, 4), acceptance, always_accepted);
00637 }
00638 return;
00639 }
00640 }
00641
00642
00643 for (uint8 i = 0; i < lengthof(accepts); i++) {
00644 AddAcceptedCargoSetMask(accepts[i], hs->cargo_acceptance[i], acceptance, always_accepted);
00645 }
00646 }
00647
00648 static void GetTileDesc_Town(TileIndex tile, TileDesc *td)
00649 {
00650 const HouseID house = GetHouseType(tile);
00651 const HouseSpec *hs = HouseSpec::Get(house);
00652 bool house_completed = IsHouseCompleted(tile);
00653
00654 td->str = hs->building_name;
00655
00656 uint16 callback_res = GetHouseCallback(CBID_HOUSE_CUSTOM_NAME, house_completed ? 1 : 0, 0, house, Town::GetByTile(tile), tile);
00657 if (callback_res != CALLBACK_FAILED) {
00658 StringID new_name = GetGRFStringID(hs->grffile->grfid, 0xD000 + callback_res);
00659 if (new_name != STR_NULL && new_name != STR_UNDEFINED) {
00660 td->str = new_name;
00661 }
00662 }
00663
00664 if (!house_completed) {
00665 SetDParamX(td->dparam, 0, td->str);
00666 td->str = STR_LAI_TOWN_INDUSTRY_DESCRIPTION_UNDER_CONSTRUCTION;
00667 }
00668
00669 if (hs->grffile != NULL) {
00670 const GRFConfig *gc = GetGRFConfig(hs->grffile->grfid);
00671 td->grf = gc->name;
00672 }
00673
00674 td->owner[0] = OWNER_TOWN;
00675 }
00676
00677 static TrackStatus GetTileTrackStatus_Town(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
00678 {
00679
00680 return 0;
00681 }
00682
00683 static void ChangeTileOwner_Town(TileIndex tile, Owner old_owner, Owner new_owner)
00684 {
00685
00686 }
00687
00688 static bool GrowTown(Town *t);
00689
00690 static void TownTickHandler(Town *t)
00691 {
00692 if (HasBit(t->flags, TOWN_IS_FUNDED)) {
00693 int i = t->grow_counter - 1;
00694 if (i < 0) {
00695 if (GrowTown(t)) {
00696 i = t->growth_rate;
00697 } else {
00698 i = 0;
00699 }
00700 }
00701 t->grow_counter = i;
00702 }
00703
00704 UpdateTownRadius(t);
00705 }
00706
00707 void OnTick_Town()
00708 {
00709 if (_game_mode == GM_EDITOR) return;
00710
00711 Town *t;
00712 FOR_ALL_TOWNS(t) {
00713
00714 if ((_tick_counter + t->index) % TOWN_GROWTH_FREQUENCY == 0) {
00715 TownTickHandler(t);
00716 }
00717 }
00718 }
00719
00728 static RoadBits GetTownRoadBits(TileIndex tile)
00729 {
00730 if (IsRoadDepotTile(tile) || IsStandardRoadStopTile(tile)) return ROAD_NONE;
00731
00732 return GetAnyRoadBits(tile, ROADTYPE_ROAD, true);
00733 }
00734
00745 static bool IsNeighborRoadTile(TileIndex tile, const DiagDirection dir, uint dist_multi)
00746 {
00747 if (!IsValidTile(tile)) return false;
00748
00749
00750 const TileIndexDiff tid_lt[3] = {
00751 TileOffsByDiagDir(ChangeDiagDir(dir, DIAGDIRDIFF_90RIGHT)),
00752 TileOffsByDiagDir(ChangeDiagDir(dir, DIAGDIRDIFF_90LEFT)),
00753 TileOffsByDiagDir(ReverseDiagDir(dir)),
00754 };
00755
00756 dist_multi = (dist_multi + 1) * 4;
00757 for (uint pos = 4; pos < dist_multi; pos++) {
00758
00759 TileIndexDiff cur = tid_lt[(pos & 1) ? 0 : 1] * (pos / 4);
00760
00761
00762 if (pos & 2) cur += tid_lt[2];
00763
00764
00765 if (IsValidTile(tile + cur) &&
00766 GetTownRoadBits(TILE_ADD(tile, cur)) & DiagDirToRoadBits((pos & 2) ? dir : ReverseDiagDir(dir))) return true;
00767 }
00768 return false;
00769 }
00770
00779 static bool IsRoadAllowedHere(Town *t, TileIndex tile, DiagDirection dir)
00780 {
00781 if (DistanceFromEdge(tile) == 0) return false;
00782
00783 Slope cur_slope, desired_slope;
00784
00785 for (;;) {
00786
00787 if (GetTownRoadBits(tile) == ROAD_NONE) {
00788
00789
00790
00791 if (DoCommand(tile, ((dir == DIAGDIR_NW || dir == DIAGDIR_SE) ? ROAD_X : ROAD_Y), 0, DC_AUTO, CMD_BUILD_ROAD).Failed() &&
00792 DoCommand(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR).Failed())
00793 return false;
00794 }
00795
00796 cur_slope = _settings_game.construction.build_on_slopes ? GetFoundationSlope(tile, NULL) : GetTileSlope(tile, NULL);
00797 bool ret = !IsNeighborRoadTile(tile, dir, t->layout == TL_ORIGINAL ? 1 : 2);
00798 if (cur_slope == SLOPE_FLAT) return ret;
00799
00800
00801
00802 desired_slope = (dir == DIAGDIR_NW || dir == DIAGDIR_SE) ? SLOPE_NW : SLOPE_NE;
00803 if (desired_slope != cur_slope && ComplementSlope(desired_slope) != cur_slope) {
00804 if (Chance16(1, 8)) {
00805 CommandCost res = CMD_ERROR;
00806 if (!_generating_world && Chance16(1, 10)) {
00807
00808 res = DoCommand(tile, Chance16(1, 16) ? cur_slope : cur_slope ^ SLOPE_ELEVATED, 0,
00809 DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
00810 }
00811 if (res.Failed() && Chance16(1, 3)) {
00812
00813 return ret;
00814 }
00815 }
00816 return false;
00817 }
00818 return ret;
00819 }
00820 }
00821
00822 static bool TerraformTownTile(TileIndex tile, int edges, int dir)
00823 {
00824 assert(tile < MapSize());
00825
00826 CommandCost r = DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
00827 if (r.Failed() || r.GetCost() >= (_price[PR_TERRAFORM] + 2) * 8) return false;
00828 DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);
00829 return true;
00830 }
00831
00832 static void LevelTownLand(TileIndex tile)
00833 {
00834 assert(tile < MapSize());
00835
00836
00837 if (IsTileType(tile, MP_HOUSE)) return;
00838 Slope tileh = GetTileSlope(tile, NULL);
00839 if (tileh == SLOPE_FLAT) return;
00840
00841
00842 if (!TerraformTownTile(tile, ~tileh & SLOPE_ELEVATED, 1)) {
00843 TerraformTownTile(tile, tileh & SLOPE_ELEVATED, 0);
00844 }
00845 }
00846
00856 static RoadBits GetTownRoadGridElement(Town *t, TileIndex tile, DiagDirection dir)
00857 {
00858
00859 TileIndexDiffC grid_pos = TileIndexToTileIndexDiffC(t->xy, tile);
00860 RoadBits rcmd = ROAD_NONE;
00861
00862 switch (t->layout) {
00863 default: NOT_REACHED();
00864
00865 case TL_2X2_GRID:
00866 if ((grid_pos.x % 3) == 0) rcmd |= ROAD_Y;
00867 if ((grid_pos.y % 3) == 0) rcmd |= ROAD_X;
00868 break;
00869
00870 case TL_3X3_GRID:
00871 if ((grid_pos.x % 4) == 0) rcmd |= ROAD_Y;
00872 if ((grid_pos.y % 4) == 0) rcmd |= ROAD_X;
00873 break;
00874 }
00875
00876
00877 if (rcmd != ROAD_ALL) return rcmd;
00878
00879 RoadBits rb_template;
00880
00881 switch (GetTileSlope(tile, NULL)) {
00882 default: rb_template = ROAD_ALL; break;
00883 case SLOPE_W: rb_template = ROAD_NW | ROAD_SW; break;
00884 case SLOPE_SW: rb_template = ROAD_Y | ROAD_SW; break;
00885 case SLOPE_S: rb_template = ROAD_SW | ROAD_SE; break;
00886 case SLOPE_SE: rb_template = ROAD_X | ROAD_SE; break;
00887 case SLOPE_E: rb_template = ROAD_SE | ROAD_NE; break;
00888 case SLOPE_NE: rb_template = ROAD_Y | ROAD_NE; break;
00889 case SLOPE_N: rb_template = ROAD_NE | ROAD_NW; break;
00890 case SLOPE_NW: rb_template = ROAD_X | ROAD_NW; break;
00891 case SLOPE_STEEP_W:
00892 case SLOPE_STEEP_S:
00893 case SLOPE_STEEP_E:
00894 case SLOPE_STEEP_N:
00895 rb_template = ROAD_NONE;
00896 break;
00897 }
00898
00899
00900 if (DiagDirToRoadBits(ReverseDiagDir(dir)) & rb_template) return rb_template;
00901
00902 return DiagDirToRoadBits(dir) | DiagDirToRoadBits(ReverseDiagDir(dir));
00903 }
00904
00915 static bool GrowTownWithExtraHouse(Town *t, TileIndex tile)
00916 {
00917
00918 if (DistanceFromEdge(tile) == 0) return false;
00919
00920 uint counter = 0;
00921
00922
00923 for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
00924
00925
00926
00927 switch (GetTileType(TileAddByDiagDir(tile, dir))) {
00928 case MP_HOUSE:
00929 case MP_VOID:
00930 counter++;
00931 break;
00932
00933 default:
00934 break;
00935 }
00936
00937
00938 if (counter >= 3) {
00939 if (BuildTownHouse(t, tile)) {
00940 _grow_town_result = GROWTH_SUCCEED;
00941 return true;
00942 }
00943 return false;
00944 }
00945 }
00946 return false;
00947 }
00948
00957 static bool GrowTownWithRoad(const Town *t, TileIndex tile, RoadBits rcmd)
00958 {
00959 if (DoCommand(tile, rcmd, t->index, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD).Succeeded()) {
00960 _grow_town_result = GROWTH_SUCCEED;
00961 return true;
00962 }
00963 return false;
00964 }
00965
00976 static bool GrowTownWithBridge(const Town *t, const TileIndex tile, const DiagDirection bridge_dir)
00977 {
00978 assert(bridge_dir < DIAGDIR_END);
00979
00980 const Slope slope = GetTileSlope(tile, NULL);
00981 if (slope == SLOPE_FLAT) return false;
00982
00983
00984
00985
00986 if (slope & InclinedSlope(bridge_dir)) return false;
00987
00988
00989 if (!(GetTownRoadBits(TileAddByDiagDir(tile, ReverseDiagDir(bridge_dir))) & DiagDirToRoadBits(bridge_dir))) return false;
00990
00991
00992 uint8 bridge_length = 0;
00993 TileIndex bridge_tile = tile;
00994
00995 const int delta = TileOffsByDiagDir(bridge_dir);
00996 do {
00997 if (bridge_length++ >= 11) {
00998
00999 return false;
01000 }
01001 bridge_tile += delta;
01002 } while (TileX(bridge_tile) != 0 && TileY(bridge_tile) != 0 && IsWaterTile(bridge_tile));
01003
01004
01005 if (bridge_length == 1) return false;
01006
01007 for (uint8 times = 0; times <= 22; times++) {
01008 byte bridge_type = RandomRange(MAX_BRIDGES - 1);
01009
01010
01011 if (DoCommand(tile, bridge_tile, bridge_type | ROADTYPES_ROAD << 8 | TRANSPORT_ROAD << 15, DC_AUTO, CMD_BUILD_BRIDGE).Succeeded()) {
01012 DoCommand(tile, bridge_tile, bridge_type | ROADTYPES_ROAD << 8 | TRANSPORT_ROAD << 15, DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE);
01013 _grow_town_result = GROWTH_SUCCEED;
01014 return true;
01015 }
01016 }
01017
01018 return false;
01019 }
01020
01038 static void GrowTownInTile(TileIndex *tile_ptr, RoadBits cur_rb, DiagDirection target_dir, Town *t1)
01039 {
01040 RoadBits rcmd = ROAD_NONE;
01041 TileIndex tile = *tile_ptr;
01042
01043 assert(tile < MapSize());
01044
01045 if (cur_rb == ROAD_NONE) {
01046
01047
01048 _grow_town_result = GROWTH_SEARCH_STOPPED;
01049
01050 if (!_settings_game.economy.allow_town_roads && !_generating_world) return;
01051
01052
01053 if (!_settings_game.construction.build_on_slopes || Chance16(1, 6)) LevelTownLand(tile);
01054
01055
01056 switch (t1->layout) {
01057 default: NOT_REACHED();
01058
01059 case TL_3X3_GRID:
01060 case TL_2X2_GRID:
01061 rcmd = GetTownRoadGridElement(t1, tile, target_dir);
01062 if (rcmd == ROAD_NONE) return;
01063 break;
01064
01065 case TL_BETTER_ROADS:
01066 case TL_ORIGINAL:
01067 if (!IsRoadAllowedHere(t1, tile, target_dir)) return;
01068
01069 DiagDirection source_dir = ReverseDiagDir(target_dir);
01070
01071 if (Chance16(1, 4)) {
01072
01073 do target_dir = RandomDiagDir(); while (target_dir == source_dir);
01074 }
01075
01076 if (!IsRoadAllowedHere(t1, TileAddByDiagDir(tile, target_dir), target_dir)) {
01077
01078
01079 if (target_dir != ReverseDiagDir(source_dir)) return;
01080
01081
01082 if (!IsTileType(TileAddByDiagDir(tile, ChangeDiagDir(target_dir, DIAGDIRDIFF_90RIGHT)), MP_HOUSE) &&
01083 !IsTileType(TileAddByDiagDir(tile, ChangeDiagDir(target_dir, DIAGDIRDIFF_90LEFT)), MP_HOUSE)) {
01084 return;
01085 }
01086
01087
01088
01089 }
01090
01091 rcmd = DiagDirToRoadBits(target_dir) | DiagDirToRoadBits(source_dir);
01092 break;
01093 }
01094
01095 } else if (target_dir < DIAGDIR_END && !(cur_rb & DiagDirToRoadBits(ReverseDiagDir(target_dir)))) {
01096
01097
01098
01099 _grow_town_result = GROWTH_SEARCH_STOPPED;
01100
01101 if (!_settings_game.economy.allow_town_roads && !_generating_world) return;
01102
01103 switch (t1->layout) {
01104 default: NOT_REACHED();
01105
01106 case TL_3X3_GRID:
01107 case TL_2X2_GRID:
01108 rcmd = GetTownRoadGridElement(t1, tile, target_dir);
01109 break;
01110
01111 case TL_BETTER_ROADS:
01112 case TL_ORIGINAL:
01113 rcmd = DiagDirToRoadBits(ReverseDiagDir(target_dir));
01114 break;
01115 }
01116 } else {
01117 bool allow_house = true;
01118
01119
01120 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
01121 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
01122 *tile_ptr = GetOtherTunnelBridgeEnd(tile);
01123 }
01124 return;
01125 }
01126
01127
01128
01129 target_dir = RandomDiagDir();
01130 if (cur_rb & DiagDirToRoadBits(target_dir)) return;
01131
01132
01133 TileIndex house_tile = TileAddByDiagDir(tile, target_dir);
01134
01135
01136 if (IsWaterTile(house_tile)) return;
01137
01138 if (!IsValidTile(house_tile)) return;
01139
01140 if (_settings_game.economy.allow_town_roads || _generating_world) {
01141 switch (t1->layout) {
01142 default: NOT_REACHED();
01143
01144 case TL_3X3_GRID:
01145 GrowTownWithExtraHouse(t1, TileAddByDiagDir(house_tile, target_dir));
01146
01147
01148 case TL_2X2_GRID:
01149 rcmd = GetTownRoadGridElement(t1, house_tile, target_dir);
01150 allow_house = (rcmd == ROAD_NONE);
01151 break;
01152
01153 case TL_BETTER_ROADS:
01154 GrowTownWithExtraHouse(t1, TileAddByDiagDir(house_tile, target_dir));
01155
01156
01157 case TL_ORIGINAL:
01158
01159
01160 rcmd = DiagDirToRoadBits(target_dir);
01161 allow_house = (!IsRoadAllowedHere(t1, house_tile, target_dir) || Chance16(6, 10));
01162 break;
01163 }
01164 }
01165
01166 if (allow_house) {
01167
01168 if (!IsTileType(house_tile, MP_HOUSE)) {
01169
01170 if (Chance16(1, 6)) LevelTownLand(house_tile);
01171
01172
01173
01174 if (BuildTownHouse(t1, house_tile)) {
01175 _grow_town_result = GROWTH_SUCCEED;
01176 }
01177 }
01178 return;
01179 }
01180
01181 _grow_town_result = GROWTH_SEARCH_STOPPED;
01182 }
01183
01184
01185 if (IsWaterTile(tile)) return;
01186
01187
01188 rcmd = CleanUpRoadBits(tile, rcmd);
01189 if (rcmd == ROAD_NONE) return;
01190
01191
01192
01193
01194 if (GrowTownWithBridge(t1, tile, target_dir)) return;
01195
01196 GrowTownWithRoad(t1, tile, rcmd);
01197 }
01198
01204 static int GrowTownAtRoad(Town *t, TileIndex tile)
01205 {
01206
01207
01208
01209 DiagDirection target_dir = DIAGDIR_END;
01210
01211 assert(tile < MapSize());
01212
01213
01214
01215
01216 switch (t->layout) {
01217 case TL_BETTER_ROADS:
01218 _grow_town_result = 10 + t->num_houses * 2 / 9;
01219 break;
01220
01221 case TL_3X3_GRID:
01222 case TL_2X2_GRID:
01223 _grow_town_result = 10 + t->num_houses * 1 / 9;
01224 break;
01225
01226 default:
01227 _grow_town_result = 10 + t->num_houses * 4 / 9;
01228 break;
01229 }
01230
01231 do {
01232 RoadBits cur_rb = GetTownRoadBits(tile);
01233
01234
01235 GrowTownInTile(&tile, cur_rb, target_dir, t);
01236
01237
01238
01239 cur_rb &= ~DiagDirToRoadBits(ReverseDiagDir(target_dir));
01240 if (cur_rb == ROAD_NONE)
01241 return _grow_town_result;
01242
01243
01244
01245 do target_dir = RandomDiagDir(); while (!(cur_rb & DiagDirToRoadBits(target_dir)));
01246 tile = TileAddByDiagDir(tile, target_dir);
01247
01248 if (IsTileType(tile, MP_ROAD) && !IsRoadDepot(tile) && HasTileRoadType(tile, ROADTYPE_ROAD)) {
01249
01250 if (IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN) && Town::GetByTile(tile) != t) {
01251 _grow_town_result = GROWTH_SUCCEED;
01252 } else if (IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_NONE) && _game_mode == GM_EDITOR) {
01253
01254
01255 SetRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN);
01256 SetTownIndex(tile, t->index);
01257 }
01258 }
01259
01260
01261 } while (--_grow_town_result >= 0);
01262
01263 return (_grow_town_result == -2);
01264 }
01265
01273 static RoadBits GenRandomRoadBits()
01274 {
01275 uint32 r = Random();
01276 uint a = GB(r, 0, 2);
01277 uint b = GB(r, 8, 2);
01278 if (a == b) b ^= 2;
01279 return (RoadBits)((ROAD_NW << a) + (ROAD_NW << b));
01280 }
01281
01286 static bool GrowTown(Town *t)
01287 {
01288 static const TileIndexDiffC _town_coord_mod[] = {
01289 {-1, 0},
01290 { 1, 1},
01291 { 1, -1},
01292 {-1, -1},
01293 {-1, 0},
01294 { 0, 2},
01295 { 2, 0},
01296 { 0, -2},
01297 {-1, -1},
01298 {-2, 2},
01299 { 2, 2},
01300 { 2, -2},
01301 { 0, 0}
01302 };
01303
01304
01305 CompanyID old_company = _current_company;
01306 _current_company = OWNER_TOWN;
01307
01308 TileIndex tile = t->xy;
01309
01310
01311 const TileIndexDiffC *ptr;
01312 for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
01313 if (GetTownRoadBits(tile) != ROAD_NONE) {
01314 int r = GrowTownAtRoad(t, tile);
01315 _current_company = old_company;
01316 return r != 0;
01317 }
01318 tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
01319 }
01320
01321
01322
01323 if (_settings_game.economy.allow_town_roads || _generating_world) {
01324 tile = t->xy;
01325 for (ptr = _town_coord_mod; ptr != endof(_town_coord_mod); ++ptr) {
01326
01327 if (!IsTileType(tile, MP_HOUSE) && GetTileSlope(tile, NULL) == SLOPE_FLAT) {
01328 if (DoCommand(tile, 0, 0, DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR).Succeeded()) {
01329 DoCommand(tile, GenRandomRoadBits(), t->index, DC_EXEC | DC_AUTO, CMD_BUILD_ROAD);
01330 _current_company = old_company;
01331 return true;
01332 }
01333 }
01334 tile = TILE_ADD(tile, ToTileIndexDiff(*ptr));
01335 }
01336 }
01337
01338 _current_company = old_company;
01339 return false;
01340 }
01341
01342 void UpdateTownRadius(Town *t)
01343 {
01344 static const uint32 _town_squared_town_zone_radius_data[23][5] = {
01345 { 4, 0, 0, 0, 0},
01346 { 16, 0, 0, 0, 0},
01347 { 25, 0, 0, 0, 0},
01348 { 36, 0, 0, 0, 0},
01349 { 49, 0, 4, 0, 0},
01350 { 64, 0, 4, 0, 0},
01351 { 64, 0, 9, 0, 1},
01352 { 64, 0, 9, 0, 4},
01353 { 64, 0, 16, 0, 4},
01354 { 81, 0, 16, 0, 4},
01355 { 81, 0, 16, 0, 4},
01356 { 81, 0, 25, 0, 9},
01357 { 81, 36, 25, 0, 9},
01358 { 81, 36, 25, 16, 9},
01359 { 81, 49, 0, 25, 9},
01360 { 81, 64, 0, 25, 9},
01361 { 81, 64, 0, 36, 9},
01362 { 81, 64, 0, 36, 16},
01363 {100, 81, 0, 49, 16},
01364 {100, 81, 0, 49, 25},
01365 {121, 81, 0, 49, 25},
01366 {121, 81, 0, 49, 25},
01367 {121, 81, 0, 49, 36},
01368 };
01369
01370 if (t->num_houses < 92) {
01371 memcpy(t->squared_town_zone_radius, _town_squared_town_zone_radius_data[t->num_houses / 4], sizeof(t->squared_town_zone_radius));
01372 } else {
01373 int mass = t->num_houses / 8;
01374
01375
01376
01377 t->squared_town_zone_radius[0] = mass * 15 - 40;
01378 t->squared_town_zone_radius[1] = mass * 9 - 15;
01379 t->squared_town_zone_radius[2] = 0;
01380 t->squared_town_zone_radius[3] = mass * 5 - 5;
01381 t->squared_town_zone_radius[4] = mass * 3 + 5;
01382 }
01383 }
01384
01385 void UpdateTownMaxPass(Town *t)
01386 {
01387 t->max_pass = t->population >> 3;
01388 t->max_mail = t->population >> 4;
01389 }
01390
01402 static void DoCreateTown(Town *t, TileIndex tile, uint32 townnameparts, TownSize size, bool city, TownLayout layout, bool manual)
01403 {
01404 t->xy = tile;
01405 t->num_houses = 0;
01406 t->time_until_rebuild = 10;
01407 UpdateTownRadius(t);
01408 t->flags = 0;
01409 t->population = 0;
01410 t->grow_counter = 0;
01411 t->growth_rate = 250;
01412 t->new_max_pass = 0;
01413 t->new_max_mail = 0;
01414 t->new_act_pass = 0;
01415 t->new_act_mail = 0;
01416 t->max_pass = 0;
01417 t->max_mail = 0;
01418 t->act_pass = 0;
01419 t->act_mail = 0;
01420
01421 t->pct_pass_transported = 0;
01422 t->pct_mail_transported = 0;
01423 t->fund_buildings_months = 0;
01424 t->new_act_food = 0;
01425 t->new_act_water = 0;
01426 t->act_food = 0;
01427 t->act_water = 0;
01428
01429 for (uint i = 0; i != MAX_COMPANIES; i++) t->ratings[i] = RATING_INITIAL;
01430
01431 t->have_ratings = 0;
01432 t->exclusivity = INVALID_COMPANY;
01433 t->exclusive_counter = 0;
01434 t->statues = 0;
01435
01436 extern int _nb_orig_names;
01437 if (_settings_game.game_creation.town_name < _nb_orig_names) {
01438
01439 t->townnamegrfid = 0;
01440 t->townnametype = SPECSTR_TOWNNAME_START + _settings_game.game_creation.town_name;
01441 } else {
01442
01443 t->townnamegrfid = GetGRFTownNameId(_settings_game.game_creation.town_name - _nb_orig_names);
01444 t->townnametype = GetGRFTownNameType(_settings_game.game_creation.town_name - _nb_orig_names);
01445 }
01446 t->townnameparts = townnameparts;
01447
01448 t->UpdateVirtCoord();
01449 InvalidateWindowData(WC_TOWN_DIRECTORY, 0, 0);
01450
01451 t->InitializeLayout(layout);
01452
01453 t->larger_town = city;
01454
01455 int x = (int)size * 16 + 3;
01456 if (size == TSZ_RANDOM) x = (Random() & 0xF) + 8;
01457
01458 if (city && (!manual || _game_mode == GM_EDITOR)) x *= _settings_game.economy.initial_city_size;
01459
01460 t->num_houses += x;
01461 UpdateTownRadius(t);
01462
01463 int i = x * 4;
01464 do {
01465 GrowTown(t);
01466 } while (--i);
01467
01468 t->num_houses -= x;
01469 UpdateTownRadius(t);
01470 UpdateTownMaxPass(t);
01471 UpdateAirportsNoise();
01472 }
01473
01479 static CommandCost TownCanBePlacedHere(TileIndex tile)
01480 {
01481
01482 if (DistanceFromEdge(tile) < 12) {
01483 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_EDGE_OF_MAP_SUB);
01484 }
01485
01486
01487 if (IsCloseToTown(tile, 20)) {
01488 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_TOWN);
01489 }
01490
01491
01492 if ((!IsTileType(tile, MP_CLEAR) && !IsTileType(tile, MP_TREES)) || GetTileSlope(tile, NULL) != SLOPE_FLAT) {
01493 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
01494 }
01495
01496 return CommandCost(EXPENSES_OTHER);
01497 }
01498
01504 static bool IsUniqueTownName(const char *name)
01505 {
01506 const Town *t;
01507
01508 FOR_ALL_TOWNS(t) {
01509 if (t->name != NULL && strcmp(t->name, name) == 0) return false;
01510 }
01511
01512 return true;
01513 }
01514
01527 CommandCost CmdFoundTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01528 {
01529 TownSize size = Extract<TownSize, 0, 2>(p1);
01530 bool city = HasBit(p1, 2);
01531 TownLayout layout = Extract<TownLayout, 3, 3>(p1);
01532 TownNameParams par(_settings_game.game_creation.town_name);
01533 bool random = HasBit(p1, 6);
01534 uint32 townnameparts = p2;
01535
01536 if (size > TSZ_RANDOM) return CMD_ERROR;
01537 if (layout > TL_RANDOM) return CMD_ERROR;
01538
01539
01540 if (_game_mode != GM_EDITOR) {
01541 if (_settings_game.economy.found_town == TF_FORBIDDEN) return CMD_ERROR;
01542 if (size == TSZ_LARGE) return CMD_ERROR;
01543 if (random) return CMD_ERROR;
01544 if (_settings_game.economy.found_town != TF_CUSTOM_LAYOUT && layout != _settings_game.economy.town_layout) {
01545 return CMD_ERROR;
01546 }
01547 }
01548
01549 if (StrEmpty(text)) {
01550
01551 if (!VerifyTownName(townnameparts, &par)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
01552 } else {
01553
01554 if (strlen(text) >= MAX_LENGTH_TOWN_NAME_BYTES) return CMD_ERROR;
01555 if (!IsUniqueTownName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
01556 }
01557
01558
01559 if (!Town::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_TOWNS);
01560
01561 if (!random) {
01562 CommandCost ret = TownCanBePlacedHere(tile);
01563 if (ret.Failed()) return ret;
01564 }
01565
01566 static const byte price_mult[][TSZ_RANDOM + 1] = {{ 15, 25, 40, 25 }, { 20, 35, 55, 35 }};
01567
01568 assert_compile(lengthof(price_mult[0]) == 4);
01569
01570 CommandCost cost(EXPENSES_OTHER, _price[PR_BUILD_TOWN]);
01571 byte mult = price_mult[city][size];
01572
01573 cost.MultiplyCost(mult);
01574
01575
01576 if (flags & DC_EXEC) {
01577 if (cost.GetCost() > GetAvailableMoneyForCommand()) {
01578 _additional_cash_required = cost.GetCost();
01579 return CommandCost(EXPENSES_OTHER);
01580 }
01581
01582 _generating_world = true;
01583 UpdateNearestTownForRoadTiles(true);
01584 Town *t;
01585 if (random) {
01586 t = CreateRandomTown(20, townnameparts, size, city, layout);
01587 if (t == NULL) {
01588 cost = CommandCost(STR_ERROR_NO_SPACE_FOR_TOWN);
01589 } else {
01590 _new_town_id = t->index;
01591 }
01592 } else {
01593 t = new Town(tile);
01594 DoCreateTown(t, tile, townnameparts, size, city, layout, true);
01595 }
01596 UpdateNearestTownForRoadTiles(false);
01597 _generating_world = false;
01598
01599 if (t != NULL && !StrEmpty(text)) {
01600 t->name = strdup(text);
01601 t->UpdateVirtCoord();
01602 }
01603
01604 if (_game_mode != GM_EDITOR) {
01605
01606 assert(!random);
01607 char company_name[MAX_LENGTH_COMPANY_NAME_BYTES];
01608 SetDParam(0, _current_company);
01609 GetString(company_name, STR_COMPANY_NAME, lastof(company_name));
01610
01611 char *cn = strdup(company_name);
01612 SetDParamStr(0, cn);
01613 SetDParam(1, t->index);
01614
01615 AddNewsItem(STR_NEWS_NEW_TOWN, NS_INDUSTRY_OPEN, NR_TILE, tile, NR_NONE, UINT32_MAX, cn);
01616 }
01617 }
01618 return cost;
01619 }
01620
01630 static TileIndex AlignTileToGrid(TileIndex tile, TownLayout layout)
01631 {
01632 switch (layout) {
01633 case TL_2X2_GRID: return TileXY(TileX(tile) - TileX(tile) % 3, TileY(tile) - TileY(tile) % 3);
01634 case TL_3X3_GRID: return TileXY(TileX(tile) & ~3, TileY(tile) & ~3);
01635 default: return tile;
01636 }
01637 }
01638
01648 static bool IsTileAlignedToGrid(TileIndex tile, TownLayout layout)
01649 {
01650 switch (layout) {
01651 case TL_2X2_GRID: return TileX(tile) % 3 == 0 && TileY(tile) % 3 == 0;
01652 case TL_3X3_GRID: return TileX(tile) % 4 == 0 && TileY(tile) % 4 == 0;
01653 default: return true;
01654 }
01655 }
01656
01660 struct SpotData {
01661 TileIndex tile;
01662 uint max_dist;
01663 TownLayout layout;
01664 };
01665
01682 static bool FindFurthestFromWater(TileIndex tile, void *user_data)
01683 {
01684 SpotData *sp = (SpotData*)user_data;
01685 uint dist = GetClosestWaterDistance(tile, true);
01686
01687 if (IsTileType(tile, MP_CLEAR) &&
01688 GetTileSlope(tile, NULL) == SLOPE_FLAT &&
01689 IsTileAlignedToGrid(tile, sp->layout) &&
01690 dist > sp->max_dist) {
01691 sp->tile = tile;
01692 sp->max_dist = dist;
01693 }
01694
01695 return false;
01696 }
01697
01704 static bool FindNearestEmptyLand(TileIndex tile, void *user_data)
01705 {
01706 return IsTileType(tile, MP_CLEAR);
01707 }
01708
01721 static TileIndex FindNearestGoodCoastalTownSpot(TileIndex tile, TownLayout layout)
01722 {
01723 SpotData sp = { INVALID_TILE, 0, layout };
01724
01725 TileIndex coast = tile;
01726 if (CircularTileSearch(&coast, 40, FindNearestEmptyLand, NULL)) {
01727 CircularTileSearch(&coast, 10, FindFurthestFromWater, &sp);
01728 return sp.tile;
01729 }
01730
01731
01732 return INVALID_TILE;
01733 }
01734
01735 static Town *CreateRandomTown(uint attempts, uint32 townnameparts, TownSize size, bool city, TownLayout layout)
01736 {
01737 if (!Town::CanAllocateItem()) return NULL;
01738
01739 do {
01740
01741 TileIndex tile = AlignTileToGrid(RandomTile(), layout);
01742
01743
01744
01745 if (IsTileType(tile, MP_WATER)) {
01746 tile = FindNearestGoodCoastalTownSpot(tile, layout);
01747 if (tile == INVALID_TILE) continue;
01748 }
01749
01750
01751 if (TownCanBePlacedHere(tile).Failed()) continue;
01752
01753
01754 Town *t = new Town(tile);
01755
01756 DoCreateTown(t, tile, townnameparts, size, city, layout, false);
01757
01758
01759
01760 if (t->population > 0) return t;
01761 delete t;
01762 } while (--attempts != 0);
01763
01764 return NULL;
01765 }
01766
01767 static const byte _num_initial_towns[4] = {5, 11, 23, 46};
01768
01775 bool GenerateTowns(TownLayout layout)
01776 {
01777 uint num = 0;
01778 uint difficulty = _settings_game.difficulty.number_towns;
01779 uint n = (difficulty == (uint)CUSTOM_TOWN_NUMBER_DIFFICULTY) ? _settings_game.game_creation.custom_town_number : ScaleByMapSize(_num_initial_towns[difficulty] + (Random() & 7));
01780 uint32 townnameparts;
01781
01782 SetGeneratingWorldProgress(GWP_TOWN, n);
01783
01784
01785
01786
01787 do {
01788 bool city = (_settings_game.economy.larger_towns != 0 && Chance16(1, _settings_game.economy.larger_towns));
01789 IncreaseGeneratingWorldProgress(GWP_TOWN);
01790
01791 if (!GenerateTownName(&townnameparts)) continue;
01792
01793 if (CreateRandomTown(20, townnameparts, TSZ_RANDOM, city, layout) != NULL) num++;
01794 } while (--n);
01795
01796 if (num != 0) return true;
01797
01798
01799
01800 if (GenerateTownName(&townnameparts) &&
01801 CreateRandomTown(10000, townnameparts, TSZ_RANDOM, _settings_game.economy.larger_towns != 0, layout) != NULL) {
01802 return true;
01803 }
01804
01805
01806 if (Town::GetNumItems() == 0 && _game_mode != GM_EDITOR) {
01807 extern StringID _switch_mode_errorstr;
01808 _switch_mode_errorstr = STR_ERROR_COULD_NOT_CREATE_TOWN;
01809 }
01810
01811 return false;
01812 }
01813
01814
01820 HouseZonesBits GetTownRadiusGroup(const Town *t, TileIndex tile)
01821 {
01822 uint dist = DistanceSquare(tile, t->xy);
01823
01824 if (t->fund_buildings_months && dist <= 25) return HZB_TOWN_CENTRE;
01825
01826 HouseZonesBits smallest = HZB_TOWN_EDGE;
01827 for (HouseZonesBits i = HZB_BEGIN; i < HZB_END; i++) {
01828 if (dist < t->squared_town_zone_radius[i]) smallest = i;
01829 }
01830
01831 return smallest;
01832 }
01833
01844 static inline void ClearMakeHouseTile(TileIndex tile, Town *t, byte counter, byte stage, HouseID type, byte random_bits)
01845 {
01846 CommandCost cc = DoCommand(tile, 0, 0, DC_EXEC | DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR);
01847
01848 assert(cc.Succeeded());
01849
01850 IncreaseBuildingCount(t, type);
01851 MakeHouseTile(tile, t->index, counter, stage, type, random_bits);
01852 if (HouseSpec::Get(type)->building_flags & BUILDING_IS_ANIMATED) AddAnimatedTile(tile);
01853
01854 MarkTileDirtyByTile(tile);
01855 }
01856
01857
01868 static void MakeTownHouse(TileIndex t, Town *town, byte counter, byte stage, HouseID type, byte random_bits)
01869 {
01870 BuildingFlags size = HouseSpec::Get(type)->building_flags;
01871
01872 ClearMakeHouseTile(t, town, counter, stage, type, random_bits);
01873 if (size & BUILDING_2_TILES_Y) ClearMakeHouseTile(t + TileDiffXY(0, 1), town, counter, stage, ++type, random_bits);
01874 if (size & BUILDING_2_TILES_X) ClearMakeHouseTile(t + TileDiffXY(1, 0), town, counter, stage, ++type, random_bits);
01875 if (size & BUILDING_HAS_4_TILES) ClearMakeHouseTile(t + TileDiffXY(1, 1), town, counter, stage, ++type, random_bits);
01876 }
01877
01878
01887 static inline bool CanBuildHouseHere(TileIndex tile, TownID town, bool noslope)
01888 {
01889
01890 Slope slope = GetTileSlope(tile, NULL);
01891 if ((noslope && slope != SLOPE_FLAT) || IsSteepSlope(slope)) return false;
01892
01893
01894 if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return false;
01895
01896
01897 if (IsTileType(tile, MP_HOUSE) && GetTownIndex(tile) != town) return false;
01898
01899
01900 return DoCommand(tile, 0, 0, DC_AUTO | DC_NO_WATER, CMD_LANDSCAPE_CLEAR).Succeeded();
01901 }
01902
01903
01913 static inline bool CheckBuildHouseSameZ(TileIndex tile, TownID town, uint z, bool noslope)
01914 {
01915 if (!CanBuildHouseHere(tile, town, noslope)) return false;
01916
01917
01918 if (GetTileMaxZ(tile) != z) return false;
01919
01920 return true;
01921 }
01922
01923
01933 static bool CheckFree2x2Area(TileIndex tile, TownID town, uint z, bool noslope)
01934 {
01935
01936 if (!CheckBuildHouseSameZ(tile, town, z, noslope)) return false;
01937
01938 for (DiagDirection d = DIAGDIR_SE; d < DIAGDIR_END; d++) {
01939 tile += TileOffsByDiagDir(d);
01940 if (!CheckBuildHouseSameZ(tile, town, z, noslope)) return false;
01941 }
01942
01943 return true;
01944 }
01945
01946
01954 static inline bool TownLayoutAllowsHouseHere(Town *t, TileIndex tile)
01955 {
01956
01957 if (!_settings_game.economy.allow_town_roads && !_generating_world) return true;
01958
01959 TileIndexDiffC grid_pos = TileIndexToTileIndexDiffC(t->xy, tile);
01960
01961 switch (t->layout) {
01962 case TL_2X2_GRID:
01963 if ((grid_pos.x % 3) == 0 || (grid_pos.y % 3) == 0) return false;
01964 break;
01965
01966 case TL_3X3_GRID:
01967 if ((grid_pos.x % 4) == 0 || (grid_pos.y % 4) == 0) return false;
01968 break;
01969
01970 default:
01971 break;
01972 }
01973
01974 return true;
01975 }
01976
01977
01985 static inline bool TownLayoutAllows2x2HouseHere(Town *t, TileIndex tile)
01986 {
01987
01988 if (!_settings_game.economy.allow_town_roads && !_generating_world) return true;
01989
01990
01991
01992 uint dx = MapSize() + TileX(t->xy) - TileX(tile);
01993 uint dy = MapSize() + TileY(t->xy) - TileY(tile);
01994
01995 switch (t->layout) {
01996 case TL_2X2_GRID:
01997 if ((dx % 3) != 0 || (dy % 3) != 0) return false;
01998 break;
01999
02000 case TL_3X3_GRID:
02001 if ((dx % 4) < 2 || (dy % 4) < 2) return false;
02002 break;
02003
02004 default:
02005 break;
02006 }
02007
02008 return true;
02009 }
02010
02011
02021 static bool CheckTownBuild2House(TileIndex *tile, Town *t, uint maxz, bool noslope, DiagDirection second)
02022 {
02023
02024
02025 TileIndex tile2 = *tile + TileOffsByDiagDir(second);
02026 if (TownLayoutAllowsHouseHere(t, tile2) && CheckBuildHouseSameZ(tile2, t->index, maxz, noslope)) return true;
02027
02028 tile2 = *tile + TileOffsByDiagDir(ReverseDiagDir(second));
02029 if (TownLayoutAllowsHouseHere(t, tile2) && CheckBuildHouseSameZ(tile2, t->index, maxz, noslope)) {
02030 *tile = tile2;
02031 return true;
02032 }
02033
02034 return false;
02035 }
02036
02037
02046 static bool CheckTownBuild2x2House(TileIndex *tile, Town *t, uint maxz, bool noslope)
02047 {
02048 TileIndex tile2 = *tile;
02049
02050 for (DiagDirection d = DIAGDIR_SE;;d++) {
02051 if (TownLayoutAllows2x2HouseHere(t, tile2) && CheckFree2x2Area(tile2, t->index, maxz, noslope)) {
02052 *tile = tile2;
02053 return true;
02054 }
02055 if (d == DIAGDIR_END) break;
02056 tile2 += TileOffsByDiagDir(ReverseDiagDir(d));
02057 }
02058
02059 return false;
02060 }
02061
02062
02069 static bool BuildTownHouse(Town *t, TileIndex tile)
02070 {
02071
02072 if (!TownLayoutAllowsHouseHere(t, tile)) return false;
02073
02074
02075 if (!CanBuildHouseHere(tile, t->index, false)) return false;
02076
02077 uint z;
02078 Slope slope = GetTileSlope(tile, &z);
02079
02080
02081
02082 HouseZonesBits rad = GetTownRadiusGroup(t, tile);
02083
02084
02085 int land = _settings_game.game_creation.landscape;
02086 if (land == LT_ARCTIC && z >= _settings_game.game_creation.snow_line) land = -1;
02087
02088 uint bitmask = (1 << rad) + (1 << (land + 12));
02089
02090
02091
02092
02093 HouseID houses[HOUSE_MAX];
02094 uint num = 0;
02095 uint probs[HOUSE_MAX];
02096 uint probability_max = 0;
02097
02098
02099 for (uint i = 0; i < HOUSE_MAX; i++) {
02100 const HouseSpec *hs = HouseSpec::Get(i);
02101
02102
02103 if ((~hs->building_availability & bitmask) != 0 || !hs->enabled || hs->override != INVALID_HOUSE_ID) continue;
02104
02105
02106 if (hs->class_id != HOUSE_NO_CLASS) {
02107
02108 if (t->building_counts.class_count[hs->class_id] == UINT16_MAX) continue;
02109 } else {
02110
02111 if (t->building_counts.id_count[i] == UINT16_MAX) continue;
02112 }
02113
02114
02115 uint cur_prob = (_loaded_newgrf_features.has_newhouses ? hs->probability : 1);
02116 probability_max += cur_prob;
02117 probs[num] = cur_prob;
02118 houses[num++] = (HouseID)i;
02119 }
02120
02121 uint maxz = GetTileMaxZ(tile);
02122
02123 while (probability_max > 0) {
02124 uint r = RandomRange(probability_max);
02125 uint i;
02126 for (i = 0; i < num; i++) {
02127 if (probs[i] > r) break;
02128 r -= probs[i];
02129 }
02130
02131 HouseID house = houses[i];
02132 probability_max -= probs[i];
02133
02134
02135 num--;
02136 houses[i] = houses[num];
02137 probs[i] = probs[num];
02138
02139 const HouseSpec *hs = HouseSpec::Get(house);
02140
02141 if (_loaded_newgrf_features.has_newhouses && !_generating_world &&
02142 _game_mode != GM_EDITOR && (hs->extra_flags & BUILDING_IS_HISTORICAL) != 0) {
02143 continue;
02144 }
02145
02146 if (_cur_year < hs->min_year || _cur_year > hs->max_year) continue;
02147
02148
02149 uint oneof = 0;
02150
02151 if (hs->building_flags & BUILDING_IS_CHURCH) {
02152 SetBit(oneof, TOWN_HAS_CHURCH);
02153 } else if (hs->building_flags & BUILDING_IS_STADIUM) {
02154 SetBit(oneof, TOWN_HAS_STADIUM);
02155 }
02156
02157 if (t->flags & oneof) continue;
02158
02159
02160 bool noslope = (hs->building_flags & TILE_NOT_SLOPED) != 0;
02161 if (noslope && slope != SLOPE_FLAT) continue;
02162
02163 if (hs->building_flags & TILE_SIZE_2x2) {
02164 if (!CheckTownBuild2x2House(&tile, t, maxz, noslope)) continue;
02165 } else if (hs->building_flags & TILE_SIZE_2x1) {
02166 if (!CheckTownBuild2House(&tile, t, maxz, noslope, DIAGDIR_SW)) continue;
02167 } else if (hs->building_flags & TILE_SIZE_1x2) {
02168 if (!CheckTownBuild2House(&tile, t, maxz, noslope, DIAGDIR_SE)) continue;
02169 } else {
02170
02171 }
02172
02173 if (HasBit(hs->callback_mask, CBM_HOUSE_ALLOW_CONSTRUCTION)) {
02174 uint16 callback_res = GetHouseCallback(CBID_HOUSE_ALLOW_CONSTRUCTION, 0, 0, house, t, tile, true);
02175 if (callback_res != CALLBACK_FAILED && GB(callback_res, 0, 8) == 0) continue;
02176 }
02177
02178
02179 t->num_houses++;
02180
02181
02182 t->flags |= oneof;
02183
02184 byte construction_counter = 0;
02185 byte construction_stage = 0;
02186
02187 if (_generating_world || _game_mode == GM_EDITOR) {
02188 uint32 r = Random();
02189
02190 construction_stage = TOWN_HOUSE_COMPLETED;
02191 if (Chance16(1, 7)) construction_stage = GB(r, 0, 2);
02192
02193 if (construction_stage == TOWN_HOUSE_COMPLETED) {
02194 ChangePopulation(t, hs->population);
02195 } else {
02196 construction_counter = GB(r, 2, 2);
02197 }
02198 }
02199
02200 MakeTownHouse(tile, t, construction_counter, construction_stage, house, Random());
02201
02202 return true;
02203 }
02204
02205 return false;
02206 }
02207
02214 static void DoClearTownHouseHelper(TileIndex tile, Town *t, HouseID house)
02215 {
02216 assert(IsTileType(tile, MP_HOUSE));
02217 DecreaseBuildingCount(t, house);
02218 DoClearSquare(tile);
02219 DeleteAnimatedTile(tile);
02220 }
02221
02229 TileIndexDiff GetHouseNorthPart(HouseID &house)
02230 {
02231 if (house >= 3) {
02232 if (HouseSpec::Get(house - 1)->building_flags & TILE_SIZE_2x1) {
02233 house--;
02234 return TileDiffXY(-1, 0);
02235 } else if (HouseSpec::Get(house - 1)->building_flags & BUILDING_2_TILES_Y) {
02236 house--;
02237 return TileDiffXY(0, -1);
02238 } else if (HouseSpec::Get(house - 2)->building_flags & BUILDING_HAS_4_TILES) {
02239 house -= 2;
02240 return TileDiffXY(-1, 0);
02241 } else if (HouseSpec::Get(house - 3)->building_flags & BUILDING_HAS_4_TILES) {
02242 house -= 3;
02243 return TileDiffXY(-1, -1);
02244 }
02245 }
02246 return 0;
02247 }
02248
02249 void ClearTownHouse(Town *t, TileIndex tile)
02250 {
02251 assert(IsTileType(tile, MP_HOUSE));
02252
02253 HouseID house = GetHouseType(tile);
02254
02255
02256 tile += GetHouseNorthPart(house);
02257
02258 const HouseSpec *hs = HouseSpec::Get(house);
02259
02260
02261 if (IsHouseCompleted(tile)) {
02262 ChangePopulation(t, -hs->population);
02263 }
02264
02265 t->num_houses--;
02266
02267
02268 if (hs->building_flags & BUILDING_IS_CHURCH) {
02269 ClrBit(t->flags, TOWN_HAS_CHURCH);
02270 } else if (hs->building_flags & BUILDING_IS_STADIUM) {
02271 ClrBit(t->flags, TOWN_HAS_STADIUM);
02272 }
02273
02274
02275 uint eflags = hs->building_flags;
02276 DoClearTownHouseHelper(tile, t, house);
02277 if (eflags & BUILDING_2_TILES_Y) DoClearTownHouseHelper(tile + TileDiffXY(0, 1), t, ++house);
02278 if (eflags & BUILDING_2_TILES_X) DoClearTownHouseHelper(tile + TileDiffXY(1, 0), t, ++house);
02279 if (eflags & BUILDING_HAS_4_TILES) DoClearTownHouseHelper(tile + TileDiffXY(1, 1), t, ++house);
02280 }
02281
02290 CommandCost CmdRenameTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02291 {
02292 Town *t = Town::GetIfValid(p1);
02293 if (t == NULL) return CMD_ERROR;
02294
02295 bool reset = StrEmpty(text);
02296
02297 if (!reset) {
02298 if (strlen(text) >= MAX_LENGTH_TOWN_NAME_BYTES) return CMD_ERROR;
02299 if (!IsUniqueTownName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
02300 }
02301
02302 if (flags & DC_EXEC) {
02303 free(t->name);
02304 t->name = reset ? NULL : strdup(text);
02305
02306 t->UpdateVirtCoord();
02307 InvalidateWindowData(WC_TOWN_DIRECTORY, 0, 1);
02308 UpdateAllStationVirtCoords();
02309 }
02310 return CommandCost();
02311 }
02312
02314 void ExpandTown(Town *t)
02315 {
02316
02317
02318 static bool warned_no_roads = false;
02319 if (!_settings_game.economy.allow_town_roads && !warned_no_roads) {
02320 ShowErrorMessage(STR_ERROR_TOWN_EXPAND_WARN_NO_ROADS, INVALID_STRING_ID, 0, 0);
02321 warned_no_roads = true;
02322 }
02323
02324
02325 uint amount = RandomRange(ClampToU16(t->num_houses / 10)) + 3;
02326 t->num_houses += amount;
02327 UpdateTownRadius(t);
02328
02329 uint n = amount * 10;
02330 do GrowTown(t); while (--n);
02331
02332 t->num_houses -= amount;
02333 UpdateTownRadius(t);
02334
02335 UpdateTownMaxPass(t);
02336 }
02337
02341 const byte _town_action_costs[TACT_COUNT] = {
02342 2, 4, 9, 35, 48, 53, 117, 175
02343 };
02344
02345 static CommandCost TownActionAdvertiseSmall(Town *t, DoCommandFlag flags)
02346 {
02347 if (flags & DC_EXEC) {
02348 ModifyStationRatingAround(t->xy, _current_company, 0x40, 10);
02349 }
02350 return CommandCost();
02351 }
02352
02353 static CommandCost TownActionAdvertiseMedium(Town *t, DoCommandFlag flags)
02354 {
02355 if (flags & DC_EXEC) {
02356 ModifyStationRatingAround(t->xy, _current_company, 0x70, 15);
02357 }
02358 return CommandCost();
02359 }
02360
02361 static CommandCost TownActionAdvertiseLarge(Town *t, DoCommandFlag flags)
02362 {
02363 if (flags & DC_EXEC) {
02364 ModifyStationRatingAround(t->xy, _current_company, 0xA0, 20);
02365 }
02366 return CommandCost();
02367 }
02368
02369 static CommandCost TownActionRoadRebuild(Town *t, DoCommandFlag flags)
02370 {
02371 if (flags & DC_EXEC) {
02372 t->road_build_months = 6;
02373
02374 char company_name[MAX_LENGTH_COMPANY_NAME_BYTES];
02375 SetDParam(0, _current_company);
02376 GetString(company_name, STR_COMPANY_NAME, lastof(company_name));
02377
02378 char *cn = strdup(company_name);
02379 SetDParam(0, t->index);
02380 SetDParamStr(1, cn);
02381
02382 AddNewsItem(STR_NEWS_ROAD_REBUILDING, NS_GENERAL, NR_TOWN, t->index, NR_NONE, UINT32_MAX, cn);
02383 }
02384 return CommandCost();
02385 }
02386
02393 static bool SearchTileForStatue(TileIndex tile, void *user_data)
02394 {
02395
02396 if (IsSteepSlope(GetTileSlope(tile, NULL))) return false;
02397
02398 if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return false;
02399
02400 if (!IsTileType(tile, MP_HOUSE) &&
02401 !IsTileType(tile, MP_CLEAR) &&
02402 !IsTileType(tile, MP_TREES)) {
02403 return false;
02404 }
02405
02406 CompanyID old = _current_company;
02407 _current_company = OWNER_NONE;
02408 CommandCost r = DoCommand(tile, 0, 0, DC_NONE, CMD_LANDSCAPE_CLEAR);
02409 _current_company = old;
02410
02411 if (r.Failed()) return false;
02412
02413 return true;
02414 }
02415
02423 static CommandCost TownActionBuildStatue(Town *t, DoCommandFlag flags)
02424 {
02425 TileIndex tile = t->xy;
02426 if (CircularTileSearch(&tile, 9, SearchTileForStatue, NULL)) {
02427 if (flags & DC_EXEC) {
02428 CompanyID old = _current_company;
02429 _current_company = OWNER_NONE;
02430 DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
02431 _current_company = old;
02432 MakeStatue(tile, _current_company, t->index);
02433 SetBit(t->statues, _current_company);
02434 MarkTileDirtyByTile(tile);
02435 }
02436 return CommandCost();
02437 }
02438 return_cmd_error(STR_ERROR_STATUE_NO_SUITABLE_PLACE);
02439 }
02440
02441 static CommandCost TownActionFundBuildings(Town *t, DoCommandFlag flags)
02442 {
02443 if (flags & DC_EXEC) {
02444
02445 t->grow_counter = 1;
02446
02447 SetBit(t->flags, TOWN_IS_FUNDED);
02448
02449 t->fund_buildings_months = 3;
02450 }
02451 return CommandCost();
02452 }
02453
02454 static CommandCost TownActionBuyRights(Town *t, DoCommandFlag flags)
02455 {
02456
02457 if (!_settings_game.economy.exclusive_rights) return CMD_ERROR;
02458
02459 if (flags & DC_EXEC) {
02460 t->exclusive_counter = 12;
02461 t->exclusivity = _current_company;
02462
02463 ModifyStationRatingAround(t->xy, _current_company, 130, 17);
02464 }
02465 return CommandCost();
02466 }
02467
02468 static CommandCost TownActionBribe(Town *t, DoCommandFlag flags)
02469 {
02470 if (flags & DC_EXEC) {
02471 if (Chance16(1, 14)) {
02472
02473 t->unwanted[_current_company] = 6;
02474
02475
02476 Station *st;
02477 FOR_ALL_STATIONS(st) {
02478 if (st->town == t && st->owner == _current_company) {
02479 for (CargoID i = 0; i < NUM_CARGO; i++) st->goods[i].rating = 0;
02480 }
02481 }
02482
02483
02484
02485 if (IsLocalCompany()) ShowErrorMessage(STR_ERROR_BRIBE_FAILED, STR_ERROR_BRIBE_FAILED_2, 0, 0);
02486
02487
02488
02489
02490
02491 if (t->ratings[_current_company] > RATING_BRIBE_DOWN_TO) {
02492 t->ratings[_current_company] = RATING_BRIBE_DOWN_TO;
02493 SetWindowDirty(WC_TOWN_AUTHORITY, t->index);
02494 }
02495 } else {
02496 ChangeTownRating(t, RATING_BRIBE_UP_STEP, RATING_BRIBE_MAXIMUM, DC_EXEC);
02497 }
02498 }
02499 return CommandCost();
02500 }
02501
02502 typedef CommandCost TownActionProc(Town *t, DoCommandFlag flags);
02503 static TownActionProc * const _town_action_proc[] = {
02504 TownActionAdvertiseSmall,
02505 TownActionAdvertiseMedium,
02506 TownActionAdvertiseLarge,
02507 TownActionRoadRebuild,
02508 TownActionBuildStatue,
02509 TownActionFundBuildings,
02510 TownActionBuyRights,
02511 TownActionBribe
02512 };
02513
02520 uint GetMaskOfTownActions(int *nump, CompanyID cid, const Town *t)
02521 {
02522 int num = 0;
02523 TownActions buttons = TACT_NONE;
02524
02525
02526 if (cid != COMPANY_SPECTATOR && !(_settings_game.economy.bribe && t->unwanted[cid])) {
02527
02528
02529 Money avail = Company::Get(cid)->money + _price[PR_STATION_VALUE] * 200;
02530
02531
02532
02533 for (uint i = 0; i != lengthof(_town_action_costs); i++) {
02534 const TownActions cur = (TownActions)(1 << i);
02535
02536
02537 if (cur == TACT_BRIBE && (!_settings_game.economy.bribe || t->ratings[cid] >= RATING_BRIBE_MAXIMUM))
02538 continue;
02539
02540
02541 if (cur == TACT_BUY_RIGHTS && !_settings_game.economy.exclusive_rights)
02542 continue;
02543
02544
02545 if (cur == TACT_BUILD_STATUE && HasBit(t->statues, cid))
02546 continue;
02547
02548 if (avail >= _town_action_costs[i] * _price[PR_TOWN_ACTION] >> 8) {
02549 buttons |= cur;
02550 num++;
02551 }
02552 }
02553 }
02554
02555 if (nump != NULL) *nump = num;
02556 return buttons;
02557 }
02558
02569 CommandCost CmdDoTownAction(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02570 {
02571 Town *t = Town::GetIfValid(p1);
02572 if (t == NULL || p2 >= lengthof(_town_action_proc)) return CMD_ERROR;
02573
02574 if (!HasBit(GetMaskOfTownActions(NULL, _current_company, t), p2)) return CMD_ERROR;
02575
02576 CommandCost cost(EXPENSES_OTHER, _price[PR_TOWN_ACTION] * _town_action_costs[p2] >> 8);
02577
02578 CommandCost ret = _town_action_proc[p2](t, flags);
02579 if (ret.Failed()) return ret;
02580
02581 if (flags & DC_EXEC) {
02582 SetWindowDirty(WC_TOWN_AUTHORITY, p1);
02583 }
02584
02585 return cost;
02586 }
02587
02588 static void UpdateTownGrowRate(Town *t)
02589 {
02590
02591 const Company *c;
02592 FOR_ALL_COMPANIES(c) {
02593 if (t->ratings[c->index] < RATING_GROWTH_MAXIMUM) {
02594 t->ratings[c->index] = min((int)RATING_GROWTH_MAXIMUM, t->ratings[c->index] + RATING_GROWTH_UP_STEP);
02595 }
02596 }
02597
02598 int n = 0;
02599
02600 const Station *st;
02601 FOR_ALL_STATIONS(st) {
02602 if (DistanceSquare(st->xy, t->xy) <= t->squared_town_zone_radius[0]) {
02603 if (st->time_since_load <= 20 || st->time_since_unload <= 20) {
02604 n++;
02605 if (Company::IsValidID(st->owner)) {
02606 int new_rating = t->ratings[st->owner] + RATING_STATION_UP_STEP;
02607 t->ratings[st->owner] = min(new_rating, INT16_MAX);
02608 }
02609 } else {
02610 if (Company::IsValidID(st->owner)) {
02611 int new_rating = t->ratings[st->owner] + RATING_STATION_DOWN_STEP;
02612 t->ratings[st->owner] = max(new_rating, INT16_MIN);
02613 }
02614 }
02615 }
02616 }
02617
02618
02619 for (uint i = 0; i < MAX_COMPANIES; i++) {
02620 t->ratings[i] = Clamp(t->ratings[i], RATING_MINIMUM, RATING_MAXIMUM);
02621 }
02622
02623 SetWindowDirty(WC_TOWN_AUTHORITY, t->index);
02624
02625 ClrBit(t->flags, TOWN_IS_FUNDED);
02626 if (_settings_game.economy.town_growth_rate == 0 && t->fund_buildings_months == 0) return;
02627
02630 static const uint16 _grow_count_values[2][6] = {
02631 { 120, 120, 120, 100, 80, 60 },
02632 { 320, 420, 300, 220, 160, 100 }
02633 };
02634
02635 uint16 m;
02636
02637 if (t->fund_buildings_months != 0) {
02638 m = _grow_count_values[0][min(n, 5)];
02639 t->fund_buildings_months--;
02640 } else {
02641 m = _grow_count_values[1][min(n, 5)];
02642 if (n == 0 && !Chance16(1, 12)) return;
02643 }
02644
02645 if (_settings_game.game_creation.landscape == LT_ARCTIC) {
02646 if (TilePixelHeight(t->xy) >= GetSnowLine() && t->act_food == 0 && t->population > 90)
02647 return;
02648 } else if (_settings_game.game_creation.landscape == LT_TROPIC) {
02649 if (GetTropicZone(t->xy) == TROPICZONE_DESERT && (t->act_food == 0 || t->act_water == 0) && t->population > 60)
02650 return;
02651 }
02652
02653
02654
02655 uint growth_multiplier = _settings_game.economy.town_growth_rate != 0 ? _settings_game.economy.town_growth_rate - 1 : 1;
02656
02657 m >>= growth_multiplier;
02658 if (t->larger_town) m /= 2;
02659
02660 t->growth_rate = m / (t->num_houses / 50 + 1);
02661 if (m <= t->grow_counter)
02662 t->grow_counter = m;
02663
02664 SetBit(t->flags, TOWN_IS_FUNDED);
02665 }
02666
02667 static void UpdateTownAmounts(Town *t)
02668 {
02669
02670 t->pct_pass_transported = t->new_act_pass * 256 / (t->new_max_pass + 1);
02671
02672 t->max_pass = t->new_max_pass; t->new_max_pass = 0;
02673 t->act_pass = t->new_act_pass; t->new_act_pass = 0;
02674 t->act_food = t->new_act_food; t->new_act_food = 0;
02675 t->act_water = t->new_act_water; t->new_act_water = 0;
02676
02677
02678 t->pct_mail_transported = t->new_act_mail * 256 / (t->new_max_mail + 1);
02679 t->max_mail = t->new_max_mail; t->new_max_mail = 0;
02680 t->act_mail = t->new_act_mail; t->new_act_mail = 0;
02681
02682 SetWindowDirty(WC_TOWN_VIEW, t->index);
02683 }
02684
02685 static void UpdateTownUnwanted(Town *t)
02686 {
02687 const Company *c;
02688
02689 FOR_ALL_COMPANIES(c) {
02690 if (t->unwanted[c->index] > 0) t->unwanted[c->index]--;
02691 }
02692 }
02693
02699 bool CheckIfAuthorityAllowsNewStation(TileIndex tile, DoCommandFlag flags)
02700 {
02701 if (!Company::IsValidID(_current_company) || (flags & DC_NO_TEST_TOWN_RATING)) return true;
02702
02703 Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
02704 if (t == NULL) return true;
02705
02706 if (t->ratings[_current_company] > RATING_VERYPOOR) return true;
02707
02708 _error_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS;
02709 SetDParam(0, t->index);
02710
02711 return false;
02712 }
02713
02714
02715 Town *CalcClosestTownFromTile(TileIndex tile, uint threshold)
02716 {
02717 Town *t;
02718 uint best = threshold;
02719 Town *best_town = NULL;
02720
02721 FOR_ALL_TOWNS(t) {
02722 uint dist = DistanceManhattan(tile, t->xy);
02723 if (dist < best) {
02724 best = dist;
02725 best_town = t;
02726 }
02727 }
02728
02729 return best_town;
02730 }
02731
02732
02733 Town *ClosestTownFromTile(TileIndex tile, uint threshold)
02734 {
02735 switch (GetTileType(tile)) {
02736 case MP_ROAD:
02737 if (IsRoadDepot(tile)) return CalcClosestTownFromTile(tile, threshold);
02738
02739 if (!HasTownOwnedRoad(tile)) {
02740 TownID tid = GetTownIndex(tile);
02741
02742 if (tid == (TownID)INVALID_TOWN) {
02743
02744 if (_generating_world) return CalcClosestTownFromTile(tile, threshold);
02745 assert(Town::GetNumItems() == 0);
02746 return NULL;
02747 }
02748
02749 assert(Town::IsValidID(tid));
02750 Town *town = Town::Get(tid);
02751
02752 if (DistanceManhattan(tile, town->xy) >= threshold) town = NULL;
02753
02754 return town;
02755 }
02756
02757
02758 case MP_HOUSE:
02759 return Town::GetByTile(tile);
02760
02761 default:
02762 return CalcClosestTownFromTile(tile, threshold);
02763 }
02764 }
02765
02766 static bool _town_rating_test = false;
02767 static SmallMap<const Town *, int, 4> _town_test_ratings;
02768
02769 void SetTownRatingTestMode(bool mode)
02770 {
02771 static int ref_count = 0;
02772 if (mode) {
02773 if (ref_count == 0) {
02774 _town_test_ratings.Clear();
02775 }
02776 ref_count++;
02777 } else {
02778 assert(ref_count > 0);
02779 ref_count--;
02780 }
02781 _town_rating_test = !(ref_count == 0);
02782 }
02783
02784 static int GetRating(const Town *t)
02785 {
02786 if (_town_rating_test) {
02787 SmallMap<const Town *, int>::iterator it = _town_test_ratings.Find(t);
02788 if (it != _town_test_ratings.End()) {
02789 return it->second;
02790 }
02791 }
02792 return t->ratings[_current_company];
02793 }
02794
02802 void ChangeTownRating(Town *t, int add, int max, DoCommandFlag flags)
02803 {
02804
02805 if (t == NULL || (flags & DC_NO_MODIFY_TOWN_RATING) ||
02806 !Company::IsValidID(_current_company) ||
02807 (_cheats.magic_bulldozer.value && add < 0)) {
02808 return;
02809 }
02810
02811 int rating = GetRating(t);
02812 if (add < 0) {
02813 if (rating > max) {
02814 rating += add;
02815 if (rating < max) rating = max;
02816 }
02817 } else {
02818 if (rating < max) {
02819 rating += add;
02820 if (rating > max) rating = max;
02821 }
02822 }
02823 if (_town_rating_test) {
02824 _town_test_ratings[t] = rating;
02825 } else {
02826 SetBit(t->have_ratings, _current_company);
02827 t->ratings[_current_company] = rating;
02828 SetWindowDirty(WC_TOWN_AUTHORITY, t->index);
02829 }
02830 }
02831
02832 bool CheckforTownRating(DoCommandFlag flags, Town *t, TownRatingCheckType type)
02833 {
02834
02835 if (t == NULL || !Company::IsValidID(_current_company) ||
02836 _cheats.magic_bulldozer.value || (flags & DC_NO_TEST_TOWN_RATING)) {
02837 return true;
02838 }
02839
02840
02841 static const int needed_rating[][TOWN_RATING_CHECK_TYPE_COUNT] = {
02842
02843 { RATING_ROAD_NEEDED_PERMISSIVE, RATING_TUNNEL_BRIDGE_NEEDED_PERMISSIVE},
02844 { RATING_ROAD_NEEDED_NEUTRAL, RATING_TUNNEL_BRIDGE_NEEDED_NEUTRAL},
02845 { RATING_ROAD_NEEDED_HOSTILE, RATING_TUNNEL_BRIDGE_NEEDED_HOSTILE},
02846 };
02847
02848
02849
02850
02851
02852 int needed = needed_rating[_settings_game.difficulty.town_council_tolerance][type];
02853
02854 if (GetRating(t) < needed) {
02855 SetDParam(0, t->index);
02856 _error_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS;
02857 return false;
02858 }
02859
02860 return true;
02861 }
02862
02863 void TownsMonthlyLoop()
02864 {
02865 Town *t;
02866
02867 FOR_ALL_TOWNS(t) {
02868 if (t->road_build_months != 0) t->road_build_months--;
02869
02870 if (t->exclusive_counter != 0)
02871 if (--t->exclusive_counter == 0) t->exclusivity = INVALID_COMPANY;
02872
02873 UpdateTownGrowRate(t);
02874 UpdateTownAmounts(t);
02875 UpdateTownUnwanted(t);
02876 }
02877 }
02878
02879 void TownsYearlyLoop()
02880 {
02881
02882 for (TileIndex t = 0; t < MapSize(); t++) {
02883 if (!IsTileType(t, MP_HOUSE)) continue;
02884 IncrementHouseAge(t);
02885 }
02886 }
02887
02888 void InitializeTowns()
02889 {
02890 _town_pool.CleanPool();
02891 }
02892
02893 static CommandCost TerraformTile_Town(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
02894 {
02895 if (AutoslopeEnabled()) {
02896 HouseID house = GetHouseType(tile);
02897 GetHouseNorthPart(house);
02898 const HouseSpec *hs = HouseSpec::Get(house);
02899
02900
02901 if (((hs->building_flags & TILE_NOT_SLOPED) == 0) && !IsSteepSlope(tileh_new) &&
02902 (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
02903 bool allow_terraform = true;
02904
02905
02906 house = GetHouseType(tile);
02907 hs = HouseSpec::Get(house);
02908 if (HasBit(hs->callback_mask, CBM_HOUSE_AUTOSLOPE)) {
02909
02910 uint16 res = GetHouseCallback(CBID_HOUSE_AUTOSLOPE, 0, 0, house, Town::GetByTile(tile), tile);
02911 if ((res != 0) && (res != CALLBACK_FAILED)) allow_terraform = false;
02912 }
02913
02914 if (allow_terraform) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
02915 }
02916 }
02917
02918 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
02919 }
02920
02922 extern const TileTypeProcs _tile_type_town_procs = {
02923 DrawTile_Town,
02924 GetSlopeZ_Town,
02925 ClearTile_Town,
02926 AddAcceptedCargo_Town,
02927 GetTileDesc_Town,
02928 GetTileTrackStatus_Town,
02929 NULL,
02930 AnimateTile_Town,
02931 TileLoop_Town,
02932 ChangeTileOwner_Town,
02933 AddProducedCargo_Town,
02934 NULL,
02935 GetFoundation_Town,
02936 TerraformTile_Town,
02937 };
02938
02939
02940 HouseSpec _house_specs[HOUSE_MAX];
02941
02942 void ResetHouses()
02943 {
02944 memset(&_house_specs, 0, sizeof(_house_specs));
02945 memcpy(&_house_specs, &_original_house_specs, sizeof(_original_house_specs));
02946
02947
02948 _house_mngr.ResetOverride();
02949 }