00001
00002
00005 #include "stdafx.h"
00006 #include "debug.h"
00007 #include "company_func.h"
00008 #include "command_func.h"
00009 #include "news_func.h"
00010 #include "variables.h"
00011 #include "aircraft.h"
00012 #include "newgrf_engine.h"
00013 #include "group.h"
00014 #include "strings_func.h"
00015 #include "gfx_func.h"
00016 #include "core/random_func.hpp"
00017 #include "window_func.h"
00018 #include "date_func.h"
00019 #include "autoreplace_gui.h"
00020 #include "string_func.h"
00021 #include "oldpool_func.h"
00022 #include "ai/ai.hpp"
00023 #include "vehicle_func.h"
00024 #include "settings_type.h"
00025
00026 #include "table/strings.h"
00027 #include "table/engines.h"
00028
00029 DEFINE_OLD_POOL_GENERIC(Engine, Engine)
00030
00031 EngineOverrideManager _engine_mngr;
00032
00035 Year _year_engine_aging_stops;
00036
00038 const uint8 _engine_counts[4] = {
00039 lengthof(_orig_rail_vehicle_info),
00040 lengthof(_orig_road_vehicle_info),
00041 lengthof(_orig_ship_vehicle_info),
00042 lengthof(_orig_aircraft_vehicle_info),
00043 };
00044
00046 const uint8 _engine_offsets[4] = {
00047 0,
00048 lengthof(_orig_rail_vehicle_info),
00049 lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info),
00050 lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info) + lengthof(_orig_ship_vehicle_info),
00051 };
00052
00053 const uint EngineOverrideManager::NUM_DEFAULT_ENGINES = _engine_counts[VEH_TRAIN] + _engine_counts[VEH_ROAD] + _engine_counts[VEH_SHIP] + _engine_counts[VEH_AIRCRAFT];
00054
00055 Engine::Engine() :
00056 name(NULL),
00057 overrides_count(0),
00058 overrides(NULL)
00059 {
00060 }
00061
00062 Engine::Engine(VehicleType type, EngineID base)
00063 {
00064 this->type = type;
00065 this->internal_id = base;
00066 this->list_position = base;
00067
00068
00069 if (base >= _engine_counts[type]) {
00070
00071 this->info.climates = 0x80;
00072
00073 this->info.base_life = 0xFF;
00074 return;
00075 }
00076
00077
00078 this->info = _orig_engine_info[_engine_offsets[type] + base];
00079
00080
00081 switch (type) {
00082 default: NOT_REACHED();
00083
00084 case VEH_TRAIN:
00085 this->u.rail = _orig_rail_vehicle_info[base];
00086 this->image_index = this->u.rail.image_index;
00087 this->info.string_id = STR_8000_KIRBY_PAUL_TANK_STEAM + base;
00088
00089
00090 if (this->u.rail.railveh_type == RAILVEH_WAGON) this->info.base_life = 0xFF;
00091
00092 break;
00093
00094 case VEH_ROAD:
00095 this->u.road = _orig_road_vehicle_info[base];
00096 this->image_index = this->u.road.image_index;
00097 this->info.string_id = STR_8074_MPS_REGAL_BUS + base;
00098 break;
00099
00100 case VEH_SHIP:
00101 this->u.ship = _orig_ship_vehicle_info[base];
00102 this->image_index = this->u.ship.image_index;
00103 this->info.string_id = STR_80CC_MPS_OIL_TANKER + base;
00104 break;
00105
00106 case VEH_AIRCRAFT:
00107 this->u.air = _orig_aircraft_vehicle_info[base];
00108 this->image_index = this->u.air.image_index;
00109 this->info.string_id = STR_80D7_SAMPSON_U52 + base;
00110 break;
00111 }
00112 }
00113
00114 Engine::~Engine()
00115 {
00116 UnloadWagonOverrides(this);
00117 free(this->name);
00118 }
00119
00131 CargoID Engine::GetDefaultCargoType() const
00132 {
00133 switch (this->type) {
00134 case VEH_TRAIN:
00135 return this->u.rail.cargo_type;
00136
00137 case VEH_ROAD:
00138 return this->u.road.cargo_type;
00139
00140 case VEH_SHIP:
00141 return this->u.ship.cargo_type;
00142
00143 case VEH_AIRCRAFT:
00144 return FindFirstRefittableCargo(this->index);
00145
00146 default: NOT_REACHED();
00147 }
00148 }
00149
00155 bool Engine::CanCarryCargo() const
00156 {
00157
00158
00159
00160
00161
00162 switch (this->type) {
00163 case VEH_TRAIN:
00164 if (this->u.rail.capacity == 0) return false;
00165 break;
00166
00167 case VEH_ROAD:
00168 if (this->u.road.capacity == 0) return false;
00169 break;
00170
00171 case VEH_SHIP:
00172 case VEH_AIRCRAFT:
00173 break;
00174
00175 default: NOT_REACHED();
00176 }
00177 return this->GetDefaultCargoType() != CT_INVALID;
00178 }
00179
00190 uint Engine::GetDisplayDefaultCapacity() const
00191 {
00192 if (!this->CanCarryCargo()) return 0;
00193 switch (type) {
00194 case VEH_TRAIN:
00195 return GetEngineProperty(this->index, 0x14, this->u.rail.capacity) + (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? this->u.rail.capacity : 0);
00196
00197 case VEH_ROAD:
00198 return GetEngineProperty(this->index, 0x0F, this->u.road.capacity);
00199
00200 case VEH_SHIP:
00201 return GetEngineProperty(this->index, 0x0D, this->u.ship.capacity);
00202
00203 case VEH_AIRCRAFT:
00204 return AircraftDefaultCargoCapacity(this->GetDefaultCargoType(), &this->u.air);
00205
00206 default: NOT_REACHED();
00207 }
00208 }
00209
00210 Money Engine::GetRunningCost() const
00211 {
00212 switch (this->type) {
00213 case VEH_ROAD:
00214 return this->u.road.running_cost * GetPriceByIndex(this->u.road.running_cost_class) >> 8;
00215
00216 case VEH_TRAIN:
00217 return GetEngineProperty(this->index, 0x0D, this->u.rail.running_cost) * GetPriceByIndex(this->u.rail.running_cost_class) >> 8;
00218
00219 case VEH_SHIP:
00220 return GetEngineProperty(this->index, 0x0F, this->u.ship.running_cost) * _price.ship_running >> 8;
00221
00222 case VEH_AIRCRAFT:
00223 return GetEngineProperty(this->index, 0x0E, this->u.air.running_cost) * _price.aircraft_running >> 8;
00224
00225 default: NOT_REACHED();
00226 }
00227 }
00228
00229 Money Engine::GetCost() const
00230 {
00231 switch (this->type) {
00232 case VEH_ROAD:
00233 return GetEngineProperty(this->index, 0x11, this->u.road.cost_factor) * (_price.roadveh_base >> 3) >> 5;
00234
00235 case VEH_TRAIN:
00236 if (this->u.rail.railveh_type == RAILVEH_WAGON) {
00237 return (GetEngineProperty(this->index, 0x17, this->u.rail.cost_factor) * _price.build_railwagon) >> 8;
00238 } else {
00239 return GetEngineProperty(this->index, 0x17, this->u.rail.cost_factor) * (_price.build_railvehicle >> 3) >> 5;
00240 }
00241 case VEH_SHIP:
00242 return GetEngineProperty(this->index, 0x0A, this->u.ship.cost_factor) * (_price.ship_base >> 3) >> 5;
00243
00244 case VEH_AIRCRAFT:
00245 return GetEngineProperty(this->index, 0x0B, this->u.air.cost_factor) * (_price.aircraft_base >> 3) >> 5;
00246
00247 default: NOT_REACHED();
00248 }
00249 }
00250
00255 uint Engine::GetDisplayMaxSpeed() const
00256 {
00257 switch (this->type) {
00258 case VEH_TRAIN:
00259 return GetEngineProperty(this->index, 0x09, this->u.rail.max_speed);
00260
00261 case VEH_ROAD:
00262 return this->u.road.max_speed / 2;
00263
00264 case VEH_SHIP:
00265 return GetEngineProperty(this->index, 0x0B, this->u.ship.max_speed) / 2;
00266
00267 case VEH_AIRCRAFT:
00268 return this->u.air.max_speed;
00269
00270 default: NOT_REACHED();
00271 }
00272 }
00273
00274 uint Engine::GetPower() const
00275 {
00276
00277 switch (this->type) {
00278 case VEH_TRAIN:
00279 return GetEngineProperty(this->index, 0x0B, this->u.rail.power);
00280
00281 default: NOT_REACHED();
00282 }
00283 }
00284
00290 uint Engine::GetDisplayWeight() const
00291 {
00292
00293 switch (this->type) {
00294 case VEH_TRAIN:
00295 return GetEngineProperty(this->index, 0x16, this->u.rail.weight) << (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? 1 : 0);
00296
00297 default: NOT_REACHED();
00298 }
00299 }
00300
00306 uint Engine::GetDisplayMaxTractiveEffort() const
00307 {
00308
00309 switch (this->type) {
00310 case VEH_TRAIN:
00311 return (10 * this->GetDisplayWeight() * GetEngineProperty(this->index, 0x1F, this->u.rail.tractive_effort)) / 256;
00312
00313 default: NOT_REACHED();
00314 }
00315 }
00316
00320 void EngineOverrideManager::ResetToDefaultMapping()
00321 {
00322 this->Clear();
00323 for (VehicleType type = VEH_TRAIN; type <= VEH_AIRCRAFT; type++) {
00324 for (uint internal_id = 0; internal_id < _engine_counts[type]; internal_id++) {
00325 EngineIDMapping *eid = this->Append();
00326 eid->type = type;
00327 eid->grfid = INVALID_GRFID;
00328 eid->internal_id = internal_id;
00329 eid->substitute_id = internal_id;
00330 }
00331 }
00332 }
00333
00343 EngineID EngineOverrideManager::GetID(VehicleType type, uint16 grf_local_id, uint32 grfid)
00344 {
00345 const EngineIDMapping *end = this->End();
00346 EngineID index = 0;
00347 for (const EngineIDMapping *eid = this->Begin(); eid != end; eid++, index++) {
00348 if (eid->type == type && eid->grfid == grfid && eid->internal_id == grf_local_id) {
00349 return index;
00350 }
00351 }
00352 return INVALID_ENGINE;
00353 }
00354
00357 void SetCachedEngineCounts()
00358 {
00359 uint engines = GetEnginePoolSize();
00360
00361
00362 Company *c;
00363 FOR_ALL_COMPANIES(c) {
00364 free(c->num_engines);
00365 c->num_engines = CallocT<EngineID>(engines);
00366 }
00367
00368
00369 Group *g;
00370 FOR_ALL_GROUPS(g) {
00371 free(g->num_engines);
00372 g->num_engines = CallocT<EngineID>(engines);
00373 }
00374
00375 const Vehicle *v;
00376 FOR_ALL_VEHICLES(v) {
00377 if (!IsEngineCountable(v)) continue;
00378
00379 assert(v->engine_type < engines);
00380
00381 GetCompany(v->owner)->num_engines[v->engine_type]++;
00382
00383 if (v->group_id == DEFAULT_GROUP) continue;
00384
00385 g = GetGroup(v->group_id);
00386 assert(v->type == g->vehicle_type);
00387 assert(v->owner == g->owner);
00388
00389 g->num_engines[v->engine_type]++;
00390 }
00391 }
00392
00393 void SetupEngines()
00394 {
00395 _Engine_pool.CleanPool();
00396 _Engine_pool.AddBlockToPool();
00397
00398 assert(_engine_mngr.Length() >= _engine_mngr.NUM_DEFAULT_ENGINES);
00399 const EngineIDMapping *end = _engine_mngr.End();
00400 uint index = 0;
00401 for (const EngineIDMapping *eid = _engine_mngr.Begin(); eid != end; eid++, index++) {
00402 const Engine *e = new Engine(eid->type, eid->internal_id);
00403 assert(e->index == index);
00404 }
00405 }
00406
00407
00408 void ShowEnginePreviewWindow(EngineID engine);
00409
00410
00411 static bool IsWagon(EngineID index)
00412 {
00413 const Engine *e = GetEngine(index);
00414 return e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON;
00415 }
00416
00417 static void CalcEngineReliability(Engine *e)
00418 {
00419 uint age = e->age;
00420
00421
00422 if (e->company_avail != 0 && !_settings_game.vehicle.never_expire_vehicles && e->info.base_life != 0xFF) {
00423 int retire_early = e->info.retire_early;
00424 uint retire_early_max_age = max(0, e->duration_phase_1 + e->duration_phase_2 - retire_early * 12);
00425 if (retire_early != 0 && age >= retire_early_max_age) {
00426
00427 e->company_avail = 0;
00428 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00429 }
00430 }
00431
00432 if (age < e->duration_phase_1) {
00433 uint start = e->reliability_start;
00434 e->reliability = age * (e->reliability_max - start) / e->duration_phase_1 + start;
00435 } else if ((age -= e->duration_phase_1) < e->duration_phase_2 || _settings_game.vehicle.never_expire_vehicles || e->info.base_life == 0xFF) {
00436
00437
00438 e->reliability = e->reliability_max;
00439 } else if ((age -= e->duration_phase_2) < e->duration_phase_3) {
00440 uint max = e->reliability_max;
00441 e->reliability = (int)age * (int)(e->reliability_final - max) / e->duration_phase_3 + max;
00442 } else {
00443
00444
00445 e->company_avail = 0;
00446 e->reliability = e->reliability_final;
00447
00448 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00449 }
00450 InvalidateWindowClasses(WC_BUILD_VEHICLE);
00451 InvalidateWindowClasses(WC_REPLACE_VEHICLE);
00452 }
00453
00454 void SetYearEngineAgingStops()
00455 {
00456
00457 _year_engine_aging_stops = 2050;
00458
00459 const Engine *e;
00460 FOR_ALL_ENGINES(e) {
00461 const EngineInfo *ei = &e->info;
00462
00463
00464 if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) continue;
00465 if (e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON) continue;
00466
00467
00468 YearMonthDay ymd;
00469 ConvertDateToYMD(ei->base_intro + (ei->lifelength * DAYS_IN_LEAP_YEAR) / 2, &ymd);
00470
00471 _year_engine_aging_stops = max(_year_engine_aging_stops, ymd.year);
00472 }
00473 }
00474
00475 void StartupOneEngine(Engine *e, Date aging_date)
00476 {
00477 const EngineInfo *ei = &e->info;
00478 uint32 r;
00479
00480 e->age = 0;
00481 e->flags = 0;
00482 e->company_avail = 0;
00483
00484
00485
00486
00487 r = Random();
00488 e->intro_date = ei->base_intro <= ConvertYMDToDate(_settings_game.game_creation.starting_year + 2, 0, 1) ? ei->base_intro : (Date)GB(r, 0, 9) + ei->base_intro;
00489 if (e->intro_date <= _date) {
00490 e->age = (aging_date - e->intro_date) >> 5;
00491 e->company_avail = (CompanyMask)-1;
00492 e->flags |= ENGINE_AVAILABLE;
00493 }
00494
00495 e->reliability_start = GB(r, 16, 14) + 0x7AE0;
00496 r = Random();
00497 e->reliability_max = GB(r, 0, 14) + 0xBFFF;
00498 e->reliability_final = GB(r, 16, 14) + 0x3FFF;
00499
00500 r = Random();
00501 e->duration_phase_1 = GB(r, 0, 5) + 7;
00502 e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
00503 e->duration_phase_3 = GB(r, 9, 7) + 120;
00504
00505 e->reliability_spd_dec = ei->decay_speed << 2;
00506
00507 CalcEngineReliability(e);
00508
00509 e->lifelength = ei->lifelength + _settings_game.vehicle.extend_vehicle_life;
00510
00511
00512 if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) {
00513 e->flags |= ENGINE_AVAILABLE;
00514 e->company_avail = 0;
00515 }
00516 }
00517
00518 void StartupEngines()
00519 {
00520 Engine *e;
00521
00522 const Date aging_date = min(_date, ConvertYMDToDate(_year_engine_aging_stops, 0, 1));
00523
00524 FOR_ALL_ENGINES(e) {
00525 StartupOneEngine(e, aging_date);
00526 }
00527
00528
00529 Company *c;
00530 FOR_ALL_COMPANIES(c) {
00531 c->avail_railtypes = GetCompanyRailtypes(c->index);
00532 c->avail_roadtypes = GetCompanyRoadtypes(c->index);
00533 }
00534 }
00535
00536 static void AcceptEnginePreview(EngineID eid, CompanyID company)
00537 {
00538 Engine *e = GetEngine(eid);
00539 Company *c = GetCompany(company);
00540
00541 SetBit(e->company_avail, company);
00542 if (e->type == VEH_TRAIN) {
00543 const RailVehicleInfo *rvi = RailVehInfo(eid);
00544
00545 assert(rvi->railtype < RAILTYPE_END);
00546 SetBit(c->avail_railtypes, rvi->railtype);
00547 } else if (e->type == VEH_ROAD) {
00548 SetBit(c->avail_roadtypes, HasBit(EngInfo(eid)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
00549 }
00550
00551 e->preview_company_rank = 0xFF;
00552 if (company == _local_company) {
00553 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00554 }
00555 }
00556
00557 static CompanyID GetBestCompany(uint8 pp)
00558 {
00559 const Company *c;
00560 int32 best_hist;
00561 CompanyID best_company;
00562 CompanyMask mask = 0;
00563
00564 do {
00565 best_hist = -1;
00566 best_company = INVALID_COMPANY;
00567 FOR_ALL_COMPANIES(c) {
00568 if (c->block_preview == 0 && !HasBit(mask, c->index) &&
00569 c->old_economy[0].performance_history > best_hist) {
00570 best_hist = c->old_economy[0].performance_history;
00571 best_company = c->index;
00572 }
00573 }
00574
00575 if (best_company == INVALID_COMPANY) return INVALID_COMPANY;
00576
00577 SetBit(mask, best_company);
00578 } while (--pp != 0);
00579
00580 return best_company;
00581 }
00582
00583 void EnginesDailyLoop()
00584 {
00585 if (_cur_year >= _year_engine_aging_stops) return;
00586
00587 Engine *e;
00588 FOR_ALL_ENGINES(e) {
00589 EngineID i = e->index;
00590 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
00591 if (e->flags & ENGINE_OFFER_WINDOW_OPEN) {
00592 if (e->preview_company_rank != 0xFF && !--e->preview_wait) {
00593 e->flags &= ~ENGINE_OFFER_WINDOW_OPEN;
00594 DeleteWindowById(WC_ENGINE_PREVIEW, i);
00595 e->preview_company_rank++;
00596 }
00597 } else if (e->preview_company_rank != 0xFF) {
00598 CompanyID best_company = GetBestCompany(e->preview_company_rank);
00599
00600 if (best_company == INVALID_COMPANY) {
00601 e->preview_company_rank = 0xFF;
00602 continue;
00603 }
00604
00605 e->flags |= ENGINE_OFFER_WINDOW_OPEN;
00606 e->preview_wait = 20;
00607 AI::NewEvent(best_company, new AIEventEnginePreview(i));
00608 if (IsInteractiveCompany(best_company)) ShowEnginePreviewWindow(i);
00609 }
00610 }
00611 }
00612 }
00613
00621 CommandCost CmdWantEnginePreview(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00622 {
00623 Engine *e;
00624
00625 if (!IsEngineIndex(p1)) return CMD_ERROR;
00626 e = GetEngine(p1);
00627 if (GetBestCompany(e->preview_company_rank) != _current_company) return CMD_ERROR;
00628
00629 if (flags & DC_EXEC) AcceptEnginePreview(p1, _current_company);
00630
00631 return CommandCost();
00632 }
00633
00634 StringID GetEngineCategoryName(EngineID engine);
00635
00636 static void NewVehicleAvailable(Engine *e)
00637 {
00638 Vehicle *v;
00639 Company *c;
00640 EngineID index = e->index;
00641
00642
00643
00644 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
00645 FOR_ALL_COMPANIES(c) {
00646 uint block_preview = c->block_preview;
00647
00648 if (!HasBit(e->company_avail, c->index)) continue;
00649
00650
00651 c->block_preview = 20;
00652
00653 FOR_ALL_VEHICLES(v) {
00654 if (v->type == VEH_TRAIN || v->type == VEH_ROAD || v->type == VEH_SHIP ||
00655 (v->type == VEH_AIRCRAFT && IsNormalAircraft(v))) {
00656 if (v->owner == c->index && v->engine_type == index) {
00657
00658 c->block_preview = block_preview;
00659 break;
00660 }
00661 }
00662 }
00663 }
00664 }
00665
00666 e->flags = (e->flags & ~ENGINE_EXCLUSIVE_PREVIEW) | ENGINE_AVAILABLE;
00667 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00668
00669
00670 e->company_avail = (CompanyMask)-1;
00671
00672
00673 if (IsWagon(index)) return;
00674
00675 if (e->type == VEH_TRAIN) {
00676
00677 RailType railtype = e->u.rail.railtype;
00678 assert(railtype < RAILTYPE_END);
00679 FOR_ALL_COMPANIES(c) SetBit(c->avail_railtypes, railtype);
00680 } else if (e->type == VEH_ROAD) {
00681
00682 FOR_ALL_COMPANIES(c) SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
00683 }
00684
00685 AI::BroadcastNewEvent(new AIEventEngineAvailable(index));
00686
00687 SetDParam(0, GetEngineCategoryName(index));
00688 SetDParam(1, index);
00689 AddNewsItem(STR_NEW_VEHICLE_NOW_AVAILABLE_WITH_TYPE, NS_NEW_VEHICLES, index, 0);
00690 }
00691
00692 void EnginesMonthlyLoop()
00693 {
00694 if (_cur_year < _year_engine_aging_stops) {
00695 Engine *e;
00696 FOR_ALL_ENGINES(e) {
00697
00698 if (e->flags & ENGINE_AVAILABLE && e->age != 0xFFFF) {
00699 e->age++;
00700 CalcEngineReliability(e);
00701 }
00702
00703 if (!(e->flags & ENGINE_AVAILABLE) && _date >= (e->intro_date + DAYS_IN_YEAR)) {
00704
00705 NewVehicleAvailable(e);
00706 } else if (!(e->flags & (ENGINE_AVAILABLE | ENGINE_EXCLUSIVE_PREVIEW)) && _date >= e->intro_date) {
00707
00708 e->flags |= ENGINE_EXCLUSIVE_PREVIEW;
00709
00710
00711 if (!IsWagon(e->index))
00712 e->preview_company_rank = 1;
00713 }
00714 }
00715 }
00716 }
00717
00718 static bool IsUniqueEngineName(const char *name)
00719 {
00720 const Engine *e;
00721
00722 FOR_ALL_ENGINES(e) {
00723 if (e->name != NULL && strcmp(e->name, name) == 0) return false;
00724 }
00725
00726 return true;
00727 }
00728
00735 CommandCost CmdRenameEngine(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00736 {
00737 if (!IsEngineIndex(p1)) return CMD_ERROR;
00738
00739 bool reset = StrEmpty(text);
00740
00741 if (!reset) {
00742 if (strlen(text) >= MAX_LENGTH_ENGINE_NAME_BYTES) return CMD_ERROR;
00743 if (!IsUniqueEngineName(text)) return_cmd_error(STR_NAME_MUST_BE_UNIQUE);
00744 }
00745
00746 if (flags & DC_EXEC) {
00747 Engine *e = GetEngine(p1);
00748 free(e->name);
00749
00750 if (reset) {
00751 e->name = NULL;
00752 } else {
00753 e->name = strdup(text);
00754 }
00755
00756 MarkWholeScreenDirty();
00757 }
00758
00759 return CommandCost();
00760 }
00761
00762
00770 bool IsEngineBuildable(EngineID engine, VehicleType type, CompanyID company)
00771 {
00772
00773 if (!IsEngineIndex(engine)) return false;
00774
00775 const Engine *e = GetEngine(engine);
00776
00777
00778 if (e->type != type) return false;
00779
00780
00781 if (!HasBit(e->company_avail, company)) return false;
00782
00783 if (type == VEH_TRAIN) {
00784
00785 const Company *c = GetCompany(company);
00786 if (!HasBit(c->avail_railtypes, RailVehInfo(engine)->railtype)) return false;
00787 }
00788
00789 return true;
00790 }
00791
00798 bool IsEngineRefittable(EngineID engine)
00799 {
00800
00801 if (!IsEngineIndex(engine)) return false;
00802
00803 const Engine *e = GetEngine(engine);
00804
00805 if (e->type == VEH_SHIP && !e->u.ship.refittable) return false;
00806
00807 if (!e->CanCarryCargo()) return false;
00808
00809 const EngineInfo *ei = &e->info;
00810 if (ei->refit_mask == 0) return false;
00811
00812
00813
00814 if (HasBit(ei->callbackmask, CBM_VEHICLE_CARGO_SUFFIX)) return true;
00815
00816
00817 CargoID default_cargo = e->GetDefaultCargoType();
00818 return default_cargo != CT_INVALID && ei->refit_mask != 1U << default_cargo;
00819 }