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 assert_compile(lengthof(_orig_rail_vehicle_info) + lengthof(_orig_road_vehicle_info) + lengthof(_orig_ship_vehicle_info) + lengthof(_orig_aircraft_vehicle_info) == lengthof(_orig_engine_info));
00054
00055 const uint EngineOverrideManager::NUM_DEFAULT_ENGINES = _engine_counts[VEH_TRAIN] + _engine_counts[VEH_ROAD] + _engine_counts[VEH_SHIP] + _engine_counts[VEH_AIRCRAFT];
00056
00057 Engine::Engine() :
00058 name(NULL),
00059 overrides_count(0),
00060 overrides(NULL)
00061 {
00062 }
00063
00064 Engine::Engine(VehicleType type, EngineID base)
00065 {
00066 this->type = type;
00067 this->internal_id = base;
00068 this->list_position = base;
00069
00070
00071 if (base >= _engine_counts[type]) {
00072
00073 this->info.climates = 0x80;
00074
00075 this->info.base_life = 0xFF;
00076 return;
00077 }
00078
00079
00080 this->info = _orig_engine_info[_engine_offsets[type] + base];
00081
00082
00083 switch (type) {
00084 default: NOT_REACHED();
00085
00086 case VEH_TRAIN:
00087 this->u.rail = _orig_rail_vehicle_info[base];
00088 this->image_index = this->u.rail.image_index;
00089 this->info.string_id = STR_8000_KIRBY_PAUL_TANK_STEAM + base;
00090
00091
00092 if (this->u.rail.railveh_type == RAILVEH_WAGON) this->info.base_life = 0xFF;
00093
00094 break;
00095
00096 case VEH_ROAD:
00097 this->u.road = _orig_road_vehicle_info[base];
00098 this->image_index = this->u.road.image_index;
00099 this->info.string_id = STR_8074_MPS_REGAL_BUS + base;
00100 break;
00101
00102 case VEH_SHIP:
00103 this->u.ship = _orig_ship_vehicle_info[base];
00104 this->image_index = this->u.ship.image_index;
00105 this->info.string_id = STR_80CC_MPS_OIL_TANKER + base;
00106 break;
00107
00108 case VEH_AIRCRAFT:
00109 this->u.air = _orig_aircraft_vehicle_info[base];
00110 this->image_index = this->u.air.image_index;
00111 this->info.string_id = STR_80D7_SAMPSON_U52 + base;
00112 break;
00113 }
00114 }
00115
00116 Engine::~Engine()
00117 {
00118 UnloadWagonOverrides(this);
00119 free(this->name);
00120 }
00121
00133 CargoID Engine::GetDefaultCargoType() const
00134 {
00135 switch (this->type) {
00136 case VEH_TRAIN:
00137 return this->u.rail.cargo_type;
00138
00139 case VEH_ROAD:
00140 return this->u.road.cargo_type;
00141
00142 case VEH_SHIP:
00143 return this->u.ship.cargo_type;
00144
00145 case VEH_AIRCRAFT:
00146 return FindFirstRefittableCargo(this->index);
00147
00148 default: NOT_REACHED();
00149 }
00150 }
00151
00157 bool Engine::CanCarryCargo() const
00158 {
00159
00160
00161
00162
00163
00164 switch (this->type) {
00165 case VEH_TRAIN:
00166 if (this->u.rail.capacity == 0) return false;
00167 break;
00168
00169 case VEH_ROAD:
00170 if (this->u.road.capacity == 0) return false;
00171 break;
00172
00173 case VEH_SHIP:
00174 case VEH_AIRCRAFT:
00175 break;
00176
00177 default: NOT_REACHED();
00178 }
00179 return this->GetDefaultCargoType() != CT_INVALID;
00180 }
00181
00192 uint Engine::GetDisplayDefaultCapacity() const
00193 {
00194 if (!this->CanCarryCargo()) return 0;
00195 switch (type) {
00196 case VEH_TRAIN:
00197 return GetEngineProperty(this->index, 0x14, this->u.rail.capacity) + (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? this->u.rail.capacity : 0);
00198
00199 case VEH_ROAD:
00200 return GetEngineProperty(this->index, 0x0F, this->u.road.capacity);
00201
00202 case VEH_SHIP:
00203 return GetEngineProperty(this->index, 0x0D, this->u.ship.capacity);
00204
00205 case VEH_AIRCRAFT:
00206 return AircraftDefaultCargoCapacity(this->GetDefaultCargoType(), &this->u.air);
00207
00208 default: NOT_REACHED();
00209 }
00210 }
00211
00212 Money Engine::GetRunningCost() const
00213 {
00214 switch (this->type) {
00215 case VEH_ROAD:
00216 return this->u.road.running_cost * GetPriceByIndex(this->u.road.running_cost_class) >> 8;
00217
00218 case VEH_TRAIN:
00219 return GetEngineProperty(this->index, 0x0D, this->u.rail.running_cost) * GetPriceByIndex(this->u.rail.running_cost_class) >> 8;
00220
00221 case VEH_SHIP:
00222 return GetEngineProperty(this->index, 0x0F, this->u.ship.running_cost) * _price.ship_running >> 8;
00223
00224 case VEH_AIRCRAFT:
00225 return GetEngineProperty(this->index, 0x0E, this->u.air.running_cost) * _price.aircraft_running >> 8;
00226
00227 default: NOT_REACHED();
00228 }
00229 }
00230
00231 Money Engine::GetCost() const
00232 {
00233 switch (this->type) {
00234 case VEH_ROAD:
00235 return GetEngineProperty(this->index, 0x11, this->u.road.cost_factor) * (_price.roadveh_base >> 3) >> 5;
00236
00237 case VEH_TRAIN:
00238 if (this->u.rail.railveh_type == RAILVEH_WAGON) {
00239 return (GetEngineProperty(this->index, 0x17, this->u.rail.cost_factor) * _price.build_railwagon) >> 8;
00240 } else {
00241 return GetEngineProperty(this->index, 0x17, this->u.rail.cost_factor) * (_price.build_railvehicle >> 3) >> 5;
00242 }
00243 case VEH_SHIP:
00244 return GetEngineProperty(this->index, 0x0A, this->u.ship.cost_factor) * (_price.ship_base >> 3) >> 5;
00245
00246 case VEH_AIRCRAFT:
00247 return GetEngineProperty(this->index, 0x0B, this->u.air.cost_factor) * (_price.aircraft_base >> 3) >> 5;
00248
00249 default: NOT_REACHED();
00250 }
00251 }
00252
00257 uint Engine::GetDisplayMaxSpeed() const
00258 {
00259 switch (this->type) {
00260 case VEH_TRAIN:
00261 return GetEngineProperty(this->index, 0x09, this->u.rail.max_speed);
00262
00263 case VEH_ROAD:
00264 return this->u.road.max_speed / 2;
00265
00266 case VEH_SHIP:
00267 return GetEngineProperty(this->index, 0x0B, this->u.ship.max_speed) / 2;
00268
00269 case VEH_AIRCRAFT:
00270 return this->u.air.max_speed;
00271
00272 default: NOT_REACHED();
00273 }
00274 }
00275
00276 uint Engine::GetPower() const
00277 {
00278
00279 switch (this->type) {
00280 case VEH_TRAIN:
00281 return GetEngineProperty(this->index, 0x0B, this->u.rail.power);
00282
00283 default: NOT_REACHED();
00284 }
00285 }
00286
00292 uint Engine::GetDisplayWeight() const
00293 {
00294
00295 switch (this->type) {
00296 case VEH_TRAIN:
00297 return GetEngineProperty(this->index, 0x16, this->u.rail.weight) << (this->u.rail.railveh_type == RAILVEH_MULTIHEAD ? 1 : 0);
00298
00299 default: NOT_REACHED();
00300 }
00301 }
00302
00308 uint Engine::GetDisplayMaxTractiveEffort() const
00309 {
00310
00311 switch (this->type) {
00312 case VEH_TRAIN:
00313 return (10 * this->GetDisplayWeight() * GetEngineProperty(this->index, 0x1F, this->u.rail.tractive_effort)) / 256;
00314
00315 default: NOT_REACHED();
00316 }
00317 }
00318
00322 void EngineOverrideManager::ResetToDefaultMapping()
00323 {
00324 this->Clear();
00325 for (VehicleType type = VEH_TRAIN; type <= VEH_AIRCRAFT; type++) {
00326 for (uint internal_id = 0; internal_id < _engine_counts[type]; internal_id++) {
00327 EngineIDMapping *eid = this->Append();
00328 eid->type = type;
00329 eid->grfid = INVALID_GRFID;
00330 eid->internal_id = internal_id;
00331 eid->substitute_id = internal_id;
00332 }
00333 }
00334 }
00335
00345 EngineID EngineOverrideManager::GetID(VehicleType type, uint16 grf_local_id, uint32 grfid)
00346 {
00347 const EngineIDMapping *end = this->End();
00348 EngineID index = 0;
00349 for (const EngineIDMapping *eid = this->Begin(); eid != end; eid++, index++) {
00350 if (eid->type == type && eid->grfid == grfid && eid->internal_id == grf_local_id) {
00351 return index;
00352 }
00353 }
00354 return INVALID_ENGINE;
00355 }
00356
00359 void SetCachedEngineCounts()
00360 {
00361 uint engines = GetEnginePoolSize();
00362
00363
00364 Company *c;
00365 FOR_ALL_COMPANIES(c) {
00366 free(c->num_engines);
00367 c->num_engines = CallocT<EngineID>(engines);
00368 }
00369
00370
00371 Group *g;
00372 FOR_ALL_GROUPS(g) {
00373 free(g->num_engines);
00374 g->num_engines = CallocT<EngineID>(engines);
00375 }
00376
00377 const Vehicle *v;
00378 FOR_ALL_VEHICLES(v) {
00379 if (!IsEngineCountable(v)) continue;
00380
00381 assert(v->engine_type < engines);
00382
00383 GetCompany(v->owner)->num_engines[v->engine_type]++;
00384
00385 if (v->group_id == DEFAULT_GROUP) continue;
00386
00387 g = GetGroup(v->group_id);
00388 assert(v->type == g->vehicle_type);
00389 assert(v->owner == g->owner);
00390
00391 g->num_engines[v->engine_type]++;
00392 }
00393 }
00394
00395 void SetupEngines()
00396 {
00397 _Engine_pool.CleanPool();
00398 _Engine_pool.AddBlockToPool();
00399
00400 assert(_engine_mngr.Length() >= _engine_mngr.NUM_DEFAULT_ENGINES);
00401 const EngineIDMapping *end = _engine_mngr.End();
00402 uint index = 0;
00403 for (const EngineIDMapping *eid = _engine_mngr.Begin(); eid != end; eid++, index++) {
00404 const Engine *e = new Engine(eid->type, eid->internal_id);
00405 assert(e->index == index);
00406 }
00407 }
00408
00409
00410 void ShowEnginePreviewWindow(EngineID engine);
00411
00412
00413 static bool IsWagon(EngineID index)
00414 {
00415 const Engine *e = GetEngine(index);
00416 return e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON;
00417 }
00418
00419 static void CalcEngineReliability(Engine *e)
00420 {
00421 uint age = e->age;
00422
00423
00424 if (e->company_avail != 0 && !_settings_game.vehicle.never_expire_vehicles && e->info.base_life != 0xFF) {
00425 int retire_early = e->info.retire_early;
00426 uint retire_early_max_age = max(0, e->duration_phase_1 + e->duration_phase_2 - retire_early * 12);
00427 if (retire_early != 0 && age >= retire_early_max_age) {
00428
00429 e->company_avail = 0;
00430 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00431 }
00432 }
00433
00434 if (age < e->duration_phase_1) {
00435 uint start = e->reliability_start;
00436 e->reliability = age * (e->reliability_max - start) / e->duration_phase_1 + start;
00437 } else if ((age -= e->duration_phase_1) < e->duration_phase_2 || _settings_game.vehicle.never_expire_vehicles || e->info.base_life == 0xFF) {
00438
00439
00440 e->reliability = e->reliability_max;
00441 } else if ((age -= e->duration_phase_2) < e->duration_phase_3) {
00442 uint max = e->reliability_max;
00443 e->reliability = (int)age * (int)(e->reliability_final - max) / e->duration_phase_3 + max;
00444 } else {
00445
00446
00447 e->company_avail = 0;
00448 e->reliability = e->reliability_final;
00449
00450 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00451 }
00452 InvalidateWindowClasses(WC_BUILD_VEHICLE);
00453 InvalidateWindowClasses(WC_REPLACE_VEHICLE);
00454 }
00455
00456 void SetYearEngineAgingStops()
00457 {
00458
00459 _year_engine_aging_stops = 2050;
00460
00461 const Engine *e;
00462 FOR_ALL_ENGINES(e) {
00463 const EngineInfo *ei = &e->info;
00464
00465
00466 if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) continue;
00467 if (e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON) continue;
00468
00469
00470 YearMonthDay ymd;
00471 ConvertDateToYMD(ei->base_intro + (ei->lifelength * DAYS_IN_LEAP_YEAR) / 2, &ymd);
00472
00473 _year_engine_aging_stops = max(_year_engine_aging_stops, ymd.year);
00474 }
00475 }
00476
00477 void StartupOneEngine(Engine *e, Date aging_date)
00478 {
00479 const EngineInfo *ei = &e->info;
00480 uint32 r;
00481
00482 e->age = 0;
00483 e->flags = 0;
00484 e->company_avail = 0;
00485
00486
00487
00488
00489 r = Random();
00490 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;
00491 if (e->intro_date <= _date) {
00492 e->age = (aging_date - e->intro_date) >> 5;
00493 e->company_avail = (CompanyMask)-1;
00494 e->flags |= ENGINE_AVAILABLE;
00495 }
00496
00497 e->reliability_start = GB(r, 16, 14) + 0x7AE0;
00498 r = Random();
00499 e->reliability_max = GB(r, 0, 14) + 0xBFFF;
00500 e->reliability_final = GB(r, 16, 14) + 0x3FFF;
00501
00502 r = Random();
00503 e->duration_phase_1 = GB(r, 0, 5) + 7;
00504 e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
00505 e->duration_phase_3 = GB(r, 9, 7) + 120;
00506
00507 e->reliability_spd_dec = ei->decay_speed << 2;
00508
00509 CalcEngineReliability(e);
00510
00511 e->lifelength = ei->lifelength + _settings_game.vehicle.extend_vehicle_life;
00512
00513
00514 if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) {
00515 e->flags |= ENGINE_AVAILABLE;
00516 e->company_avail = 0;
00517 }
00518 }
00519
00520 void StartupEngines()
00521 {
00522 Engine *e;
00523
00524 const Date aging_date = min(_date, ConvertYMDToDate(_year_engine_aging_stops, 0, 1));
00525
00526 FOR_ALL_ENGINES(e) {
00527 StartupOneEngine(e, aging_date);
00528 }
00529
00530
00531 Company *c;
00532 FOR_ALL_COMPANIES(c) {
00533 c->avail_railtypes = GetCompanyRailtypes(c->index);
00534 c->avail_roadtypes = GetCompanyRoadtypes(c->index);
00535 }
00536 }
00537
00538 static void AcceptEnginePreview(EngineID eid, CompanyID company)
00539 {
00540 Engine *e = GetEngine(eid);
00541 Company *c = GetCompany(company);
00542
00543 SetBit(e->company_avail, company);
00544 if (e->type == VEH_TRAIN) {
00545 const RailVehicleInfo *rvi = RailVehInfo(eid);
00546
00547 assert(rvi->railtype < RAILTYPE_END);
00548 SetBit(c->avail_railtypes, rvi->railtype);
00549 } else if (e->type == VEH_ROAD) {
00550 SetBit(c->avail_roadtypes, HasBit(EngInfo(eid)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
00551 }
00552
00553 e->preview_company_rank = 0xFF;
00554 if (company == _local_company) {
00555 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00556 }
00557 }
00558
00559 static CompanyID GetBestCompany(uint8 pp)
00560 {
00561 const Company *c;
00562 int32 best_hist;
00563 CompanyID best_company;
00564 CompanyMask mask = 0;
00565
00566 do {
00567 best_hist = -1;
00568 best_company = INVALID_COMPANY;
00569 FOR_ALL_COMPANIES(c) {
00570 if (c->block_preview == 0 && !HasBit(mask, c->index) &&
00571 c->old_economy[0].performance_history > best_hist) {
00572 best_hist = c->old_economy[0].performance_history;
00573 best_company = c->index;
00574 }
00575 }
00576
00577 if (best_company == INVALID_COMPANY) return INVALID_COMPANY;
00578
00579 SetBit(mask, best_company);
00580 } while (--pp != 0);
00581
00582 return best_company;
00583 }
00584
00585 void EnginesDailyLoop()
00586 {
00587 if (_cur_year >= _year_engine_aging_stops) return;
00588
00589 Engine *e;
00590 FOR_ALL_ENGINES(e) {
00591 EngineID i = e->index;
00592 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
00593 if (e->flags & ENGINE_OFFER_WINDOW_OPEN) {
00594 if (e->preview_company_rank != 0xFF && !--e->preview_wait) {
00595 e->flags &= ~ENGINE_OFFER_WINDOW_OPEN;
00596 DeleteWindowById(WC_ENGINE_PREVIEW, i);
00597 e->preview_company_rank++;
00598 }
00599 } else if (e->preview_company_rank != 0xFF) {
00600 CompanyID best_company = GetBestCompany(e->preview_company_rank);
00601
00602 if (best_company == INVALID_COMPANY) {
00603 e->preview_company_rank = 0xFF;
00604 continue;
00605 }
00606
00607 e->flags |= ENGINE_OFFER_WINDOW_OPEN;
00608 e->preview_wait = 20;
00609 AI::NewEvent(best_company, new AIEventEnginePreview(i));
00610 if (IsInteractiveCompany(best_company)) ShowEnginePreviewWindow(i);
00611 }
00612 }
00613 }
00614 }
00615
00623 CommandCost CmdWantEnginePreview(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00624 {
00625 Engine *e;
00626
00627 if (!IsEngineIndex(p1)) return CMD_ERROR;
00628 e = GetEngine(p1);
00629 if (GetBestCompany(e->preview_company_rank) != _current_company) return CMD_ERROR;
00630
00631 if (flags & DC_EXEC) AcceptEnginePreview(p1, _current_company);
00632
00633 return CommandCost();
00634 }
00635
00636 StringID GetEngineCategoryName(EngineID engine);
00637
00638 static void NewVehicleAvailable(Engine *e)
00639 {
00640 Vehicle *v;
00641 Company *c;
00642 EngineID index = e->index;
00643
00644
00645
00646 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
00647 FOR_ALL_COMPANIES(c) {
00648 uint block_preview = c->block_preview;
00649
00650 if (!HasBit(e->company_avail, c->index)) continue;
00651
00652
00653 c->block_preview = 20;
00654
00655 FOR_ALL_VEHICLES(v) {
00656 if (v->type == VEH_TRAIN || v->type == VEH_ROAD || v->type == VEH_SHIP ||
00657 (v->type == VEH_AIRCRAFT && IsNormalAircraft(v))) {
00658 if (v->owner == c->index && v->engine_type == index) {
00659
00660 c->block_preview = block_preview;
00661 break;
00662 }
00663 }
00664 }
00665 }
00666 }
00667
00668 e->flags = (e->flags & ~ENGINE_EXCLUSIVE_PREVIEW) | ENGINE_AVAILABLE;
00669 AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
00670
00671
00672 e->company_avail = (CompanyMask)-1;
00673
00674
00675 if (IsWagon(index)) return;
00676
00677 if (e->type == VEH_TRAIN) {
00678
00679 RailType railtype = e->u.rail.railtype;
00680 assert(railtype < RAILTYPE_END);
00681 FOR_ALL_COMPANIES(c) SetBit(c->avail_railtypes, railtype);
00682 } else if (e->type == VEH_ROAD) {
00683
00684 FOR_ALL_COMPANIES(c) SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
00685 }
00686
00687 AI::BroadcastNewEvent(new AIEventEngineAvailable(index));
00688
00689 SetDParam(0, GetEngineCategoryName(index));
00690 SetDParam(1, index);
00691 AddNewsItem(STR_NEW_VEHICLE_NOW_AVAILABLE_WITH_TYPE, NS_NEW_VEHICLES, index, 0);
00692 }
00693
00694 void EnginesMonthlyLoop()
00695 {
00696 if (_cur_year < _year_engine_aging_stops) {
00697 Engine *e;
00698 FOR_ALL_ENGINES(e) {
00699
00700 if (e->flags & ENGINE_AVAILABLE && e->age != 0xFFFF) {
00701 e->age++;
00702 CalcEngineReliability(e);
00703 }
00704
00705 if (!(e->flags & ENGINE_AVAILABLE) && _date >= (e->intro_date + DAYS_IN_YEAR)) {
00706
00707 NewVehicleAvailable(e);
00708 } else if (!(e->flags & (ENGINE_AVAILABLE | ENGINE_EXCLUSIVE_PREVIEW)) && _date >= e->intro_date) {
00709
00710 e->flags |= ENGINE_EXCLUSIVE_PREVIEW;
00711
00712
00713 if (!IsWagon(e->index))
00714 e->preview_company_rank = 1;
00715 }
00716 }
00717 }
00718 }
00719
00720 static bool IsUniqueEngineName(const char *name)
00721 {
00722 const Engine *e;
00723
00724 FOR_ALL_ENGINES(e) {
00725 if (e->name != NULL && strcmp(e->name, name) == 0) return false;
00726 }
00727
00728 return true;
00729 }
00730
00737 CommandCost CmdRenameEngine(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00738 {
00739 if (!IsEngineIndex(p1)) return CMD_ERROR;
00740
00741 bool reset = StrEmpty(text);
00742
00743 if (!reset) {
00744 if (strlen(text) >= MAX_LENGTH_ENGINE_NAME_BYTES) return CMD_ERROR;
00745 if (!IsUniqueEngineName(text)) return_cmd_error(STR_NAME_MUST_BE_UNIQUE);
00746 }
00747
00748 if (flags & DC_EXEC) {
00749 Engine *e = GetEngine(p1);
00750 free(e->name);
00751
00752 if (reset) {
00753 e->name = NULL;
00754 } else {
00755 e->name = strdup(text);
00756 }
00757
00758 MarkWholeScreenDirty();
00759 }
00760
00761 return CommandCost();
00762 }
00763
00764
00772 bool IsEngineBuildable(EngineID engine, VehicleType type, CompanyID company)
00773 {
00774
00775 if (!IsEngineIndex(engine)) return false;
00776
00777 const Engine *e = GetEngine(engine);
00778
00779
00780 if (e->type != type) return false;
00781
00782
00783 if (!HasBit(e->company_avail, company)) return false;
00784
00785 if (type == VEH_TRAIN) {
00786
00787 const Company *c = GetCompany(company);
00788 if (!HasBit(c->avail_railtypes, RailVehInfo(engine)->railtype)) return false;
00789 }
00790
00791 return true;
00792 }
00793
00800 bool IsEngineRefittable(EngineID engine)
00801 {
00802
00803 if (!IsEngineIndex(engine)) return false;
00804
00805 const Engine *e = GetEngine(engine);
00806
00807 if (e->type == VEH_SHIP && !e->u.ship.refittable) return false;
00808
00809 if (!e->CanCarryCargo()) return false;
00810
00811 const EngineInfo *ei = &e->info;
00812 if (ei->refit_mask == 0) return false;
00813
00814
00815
00816 if (HasBit(ei->callbackmask, CBM_VEHICLE_CARGO_SUFFIX)) return true;
00817
00818
00819 CargoID default_cargo = e->GetDefaultCargoType();
00820 return default_cargo != CT_INVALID && ei->refit_mask != 1U << default_cargo;
00821 }