vehicle_cmd.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "roadveh.h"
00014 #include "news_func.h"
00015 #include "airport.h"
00016 #include "cmd_helper.h"
00017 #include "command_func.h"
00018 #include "company_func.h"
00019 #include "vehicle_gui.h"
00020 #include "train.h"
00021 #include "aircraft.h"
00022 #include "newgrf_text.h"
00023 #include "window_func.h"
00024 #include "vehicle_func.h"
00025 #include "string_func.h"
00026 #include "depot_map.h"
00027 #include "vehiclelist.h"
00028 #include "engine_func.h"
00029 #include "articulated_vehicles.h"
00030 #include "autoreplace_gui.h"
00031 #include "company_base.h"
00032 #include "order_backup.h"
00033 
00034 #include "table/strings.h"
00035 
00036 /* Tables used in vehicle.h to find the right command for a certain vehicle type */
00037 const uint32 _veh_build_proc_table[] = {
00038   CMD_BUILD_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_TRAIN),
00039   CMD_BUILD_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_ROAD_VEHICLE),
00040   CMD_BUILD_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_SHIP),
00041   CMD_BUILD_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_AIRCRAFT),
00042 };
00043 
00044 const uint32 _veh_sell_proc_table[] = {
00045   CMD_SELL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_SELL_TRAIN),
00046   CMD_SELL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_SELL_ROAD_VEHICLE),
00047   CMD_SELL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_SELL_SHIP),
00048   CMD_SELL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_SELL_AIRCRAFT),
00049 };
00050 
00051 const uint32 _veh_refit_proc_table[] = {
00052   CMD_REFIT_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_REFIT_TRAIN),
00053   CMD_REFIT_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_REFIT_ROAD_VEHICLE),
00054   CMD_REFIT_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_REFIT_SHIP),
00055   CMD_REFIT_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_REFIT_AIRCRAFT),
00056 };
00057 
00058 const uint32 _send_to_depot_proc_table[] = {
00059   /* TrainGotoDepot has a nice randomizer in the pathfinder, which causes desyncs... */
00060   CMD_SEND_VEHICLE_TO_DEPOT | CMD_MSG(STR_ERROR_CAN_T_SEND_TRAIN_TO_DEPOT) | CMD_NO_TEST_IF_IN_NETWORK,
00061   CMD_SEND_VEHICLE_TO_DEPOT | CMD_MSG(STR_ERROR_CAN_T_SEND_ROAD_VEHICLE_TO_DEPOT),
00062   CMD_SEND_VEHICLE_TO_DEPOT | CMD_MSG(STR_ERROR_CAN_T_SEND_SHIP_TO_DEPOT),
00063   CMD_SEND_VEHICLE_TO_DEPOT | CMD_MSG(STR_ERROR_CAN_T_SEND_AIRCRAFT_TO_HANGAR),
00064 };
00065 
00066 
00067 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **v);
00068 CommandCost CmdBuildRoadVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **v);
00069 CommandCost CmdBuildShip       (TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **v);
00070 CommandCost CmdBuildAircraft   (TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **v);
00071 
00083 CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00084 {
00085   /* Elementary check for valid location. */
00086   if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;
00087 
00088   VehicleType type;
00089   switch (GetTileType(tile)) {
00090     case MP_RAILWAY: type = VEH_TRAIN;    break;
00091     case MP_ROAD:    type = VEH_ROAD;     break;
00092     case MP_WATER:   type = VEH_SHIP;     break;
00093     case MP_STATION: type = VEH_AIRCRAFT; break;
00094     default: NOT_REACHED(); // Safe due to IsDepotTile()
00095   }
00096 
00097   /* Validate the engine type. */
00098   EngineID eid = GB(p1, 0, 16);
00099   if (!IsEngineBuildable(eid, type, _current_company)) return_cmd_error(STR_ERROR_RAIL_VEHICLE_NOT_AVAILABLE + type);
00100 
00101   const Engine *e = Engine::Get(eid);
00102   CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
00103 
00104   /* Engines without valid cargo should not be available */
00105   if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
00106 
00107   /* Check whether the number of vehicles we need to build can be built according to pool space. */
00108   uint num_vehicles;
00109   switch (type) {
00110     case VEH_TRAIN:    num_vehicles = (e->u.rail.railveh_type == RAILVEH_MULTIHEAD ? 2 : 1) + CountArticulatedParts(eid, false); break;
00111     case VEH_ROAD:     num_vehicles = 1 + CountArticulatedParts(eid, false); break;
00112     case VEH_SHIP:     num_vehicles = 1; break;
00113     case VEH_AIRCRAFT: num_vehicles = e->u.air.subtype & AIR_CTOL ? 2 : 3; break;
00114     default: NOT_REACHED(); // Safe due to IsDepotTile()
00115   }
00116   if (!Vehicle::CanAllocateItem(num_vehicles)) return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00117 
00118   /* Check whether we can allocate a unit number. Autoreplace does not allocate
00119    * an unit number as it will (always) reuse the one of the replaced vehicle
00120    * and (train) wagons don't have an unit number in any scenario. */
00121   UnitID unit_num = (flags & DC_AUTOREPLACE || (type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON)) ? 0 : GetFreeUnitNumber(type);
00122   if (unit_num == UINT16_MAX) return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00123 
00124   Vehicle *v;
00125   switch (type) {
00126     case VEH_TRAIN:    value.AddCost(CmdBuildRailVehicle(tile, flags, e, GB(p1, 16, 16), &v)); break;
00127     case VEH_ROAD:     value.AddCost(CmdBuildRoadVehicle(tile, flags, e, GB(p1, 16, 16), &v)); break;
00128     case VEH_SHIP:     value.AddCost(CmdBuildShip       (tile, flags, e, GB(p1, 16, 16), &v)); break;
00129     case VEH_AIRCRAFT: value.AddCost(CmdBuildAircraft   (tile, flags, e, GB(p1, 16, 16), &v)); break;
00130     default: NOT_REACHED(); // Safe due to IsDepotTile()
00131   }
00132 
00133   if (value.Succeeded() && flags & DC_EXEC) {
00134     v->unitnumber = unit_num;
00135     v->value      = value.GetCost();
00136 
00137     InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00138     InvalidateWindowClassesData(GetWindowClassForVehicleType(type), 0);
00139     SetWindowDirty(WC_COMPANY, _current_company);
00140     if (IsLocalCompany()) {
00141       InvalidateAutoreplaceWindow(v->engine_type, v->group_id); // updates the auto replace window
00142     }
00143 
00144     Company::Get(_current_company)->num_engines[eid]++;
00145 
00146     if (v->IsPrimaryVehicle()) OrderBackup::Restore(v, p2);
00147   }
00148 
00149   return value;
00150 }
00151 
00152 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *v, uint16 data, uint32 user);
00153 
00166 CommandCost CmdSellVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00167 {
00168   Vehicle *v = Vehicle::GetIfValid(GB(p1, 0, 20));
00169   if (v == NULL) return CMD_ERROR;
00170 
00171   Vehicle *front = v->First();
00172 
00173   CommandCost ret = CheckOwnership(front->owner);
00174   if (ret.Failed()) return ret;
00175 
00176   if (front->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_VEHICLE_IS_DESTROYED);
00177 
00178   if (!front->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAIN_MUST_BE_STOPPED_INSIDE_DEPOT + front->type);
00179 
00180   /* Can we actually make the order backup, i.e. are there enough orders? */
00181   if (p1 & MAKE_ORDER_BACKUP_FLAG &&
00182       front->orders.list != NULL &&
00183       !front->orders.list->IsShared() &&
00184       !Order::CanAllocateItem(front->orders.list->GetNumOrders())) {
00185     /* Only happens in exceptional cases when there aren't enough orders anyhow.
00186      * Thus it should be safe to just drop the orders in that case. */
00187     p1 &= ~MAKE_ORDER_BACKUP_FLAG;
00188   }
00189 
00190   if (v->type == VEH_TRAIN) {
00191     ret = CmdSellRailWagon(flags, v, GB(p1, 20, 12), p2);
00192   } else {
00193     ret = CommandCost(EXPENSES_NEW_VEHICLES, -front->value);
00194 
00195     if (flags & DC_EXEC) {
00196       if (v->IsPrimaryVehicle() && p1 & MAKE_ORDER_BACKUP_FLAG) OrderBackup::Backup(v, p2);
00197       delete front;
00198     }
00199   }
00200 
00201   return ret;
00202 }
00203 
00209 static CommandCost GetRefitCost(EngineID engine_type)
00210 {
00211   ExpensesType expense_type;
00212   const Engine *e = Engine::Get(engine_type);
00213   Price base_price;
00214   uint cost_factor = e->info.refit_cost;
00215   switch (e->type) {
00216     case VEH_SHIP:
00217       base_price = PR_BUILD_VEHICLE_SHIP;
00218       expense_type = EXPENSES_SHIP_RUN;
00219       break;
00220 
00221     case VEH_ROAD:
00222       base_price = PR_BUILD_VEHICLE_ROAD;
00223       expense_type = EXPENSES_ROADVEH_RUN;
00224       break;
00225 
00226     case VEH_AIRCRAFT:
00227       base_price = PR_BUILD_VEHICLE_AIRCRAFT;
00228       expense_type = EXPENSES_AIRCRAFT_RUN;
00229       break;
00230 
00231     case VEH_TRAIN:
00232       base_price = (e->u.rail.railveh_type == RAILVEH_WAGON) ? PR_BUILD_VEHICLE_WAGON : PR_BUILD_VEHICLE_TRAIN;
00233       cost_factor <<= 1;
00234       expense_type = EXPENSES_TRAIN_RUN;
00235       break;
00236 
00237     default: NOT_REACHED();
00238   }
00239   return CommandCost(expense_type, GetPrice(base_price, cost_factor, e->grf_prop.grffile, -10));
00240 }
00241 
00253 static CommandCost RefitVehicle(Vehicle *v, bool only_this, uint8 num_vehicles, CargoID new_cid, byte new_subtype, DoCommandFlag flags)
00254 {
00255   CommandCost cost(v->GetExpenseType(false));
00256   uint total_capacity = 0;
00257   uint total_mail_capacity = 0;
00258   num_vehicles = num_vehicles == 0 ? UINT8_MAX : num_vehicles;
00259 
00260   VehicleSet vehicles_to_refit;
00261   if (!only_this) {
00262     GetVehicleSet(vehicles_to_refit, v, num_vehicles);
00263     /* In this case, we need to check the whole chain. */
00264     v = v->First();
00265   }
00266 
00267   v->InvalidateNewGRFCacheOfChain();
00268   for (; v != NULL; v = (only_this ? NULL : v->Next())) {
00269     if (v->type == VEH_TRAIN && !vehicles_to_refit.Contains(v->index) && !only_this) continue;
00270 
00271     const Engine *e = Engine::Get(v->engine_type);
00272     if (!e->CanCarryCargo()) continue;
00273 
00274     /* If the vehicle is not refittable, count its capacity nevertheless if the cargo matches */
00275     bool refittable = HasBit(e->info.refit_mask, new_cid);
00276     if (!refittable && v->cargo_type != new_cid) continue;
00277 
00278     /* Back up the vehicle's cargo type */
00279     CargoID temp_cid = v->cargo_type;
00280     byte temp_subtype = v->cargo_subtype;
00281     if (refittable) {
00282       v->cargo_type = new_cid;
00283       v->cargo_subtype = new_subtype;
00284     }
00285 
00286     uint16 mail_capacity = 0;
00287     uint amount = GetVehicleCapacity(v, &mail_capacity);
00288     total_capacity += amount;
00289     /* mail_capacity will always be zero if the vehicle is not an aircraft. */
00290     total_mail_capacity += mail_capacity;
00291 
00292     if (!refittable) continue;
00293 
00294     /* Restore the original cargo type */
00295     v->cargo_type = temp_cid;
00296     v->cargo_subtype = temp_subtype;
00297 
00298     if (new_cid != v->cargo_type) {
00299       cost.AddCost(GetRefitCost(v->engine_type));
00300     }
00301 
00302     if (flags & DC_EXEC) {
00303       v->cargo.Truncate((v->cargo_type == new_cid) ? amount : 0);
00304       v->cargo_type = new_cid;
00305       v->cargo_cap = amount;
00306       v->cargo_subtype = new_subtype;
00307       if (v->type == VEH_AIRCRAFT) {
00308         Vehicle *u = v->Next();
00309         u->cargo_cap = mail_capacity;
00310         u->cargo.Truncate(mail_capacity);
00311       }
00312     }
00313   }
00314 
00315   _returned_refit_capacity = total_capacity;
00316   _returned_mail_refit_capacity = total_mail_capacity;
00317   return cost;
00318 }
00319 
00334 CommandCost CmdRefitVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00335 {
00336   Vehicle *v = Vehicle::GetIfValid(p1);
00337   if (v == NULL) return CMD_ERROR;
00338 
00339   /* Don't allow disasters and sparks and such to be refitted.
00340    * We cannot check for IsPrimaryVehicle as autoreplace also refits in free wagon chains. */
00341   if (!IsCompanyBuildableVehicleType(v->type)) return CMD_ERROR;
00342 
00343   Vehicle *front = v->First();
00344 
00345   CommandCost ret = CheckOwnership(front->owner);
00346   if (ret.Failed()) return ret;
00347 
00348   /* Don't allow shadows and such to be refitted. */
00349   if (v != front && (v->type == VEH_SHIP || v->type == VEH_AIRCRAFT)) return CMD_ERROR;
00350   if (!front->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAIN_MUST_BE_STOPPED_INSIDE_DEPOT + front->type);
00351   if (front->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_VEHICLE_IS_DESTROYED);
00352 
00353   /* Check cargo */
00354   CargoID new_cid = GB(p2, 0, 5);
00355   byte new_subtype = GB(p2, 8, 8);
00356   if (new_cid >= NUM_CARGO) return CMD_ERROR;
00357 
00358   /* For ships and aircrafts there is always only one. */
00359   bool only_this = HasBit(p2, 7) || front->type == VEH_SHIP || front->type == VEH_AIRCRAFT;
00360   uint8 num_vehicles = GB(p2, 16, 8);
00361 
00362   CommandCost cost = RefitVehicle(v, only_this, num_vehicles, new_cid, new_subtype, flags);
00363 
00364   if (flags & DC_EXEC) {
00365     /* Update the cached variables */
00366     switch (v->type) {
00367       case VEH_TRAIN:
00368         Train::From(front)->ConsistChanged(false);
00369         break;
00370       case VEH_ROAD:
00371         RoadVehUpdateCache(RoadVehicle::From(front));
00372         if (_settings_game.vehicle.roadveh_acceleration_model != AM_ORIGINAL) RoadVehicle::From(front)->CargoChanged();
00373         break;
00374 
00375       case VEH_SHIP:
00376       case VEH_AIRCRAFT:
00377         v->InvalidateNewGRFCacheOfChain();
00378         v->colourmap = PAL_NONE; // invalidate vehicle colour map
00379         break;
00380 
00381       default: NOT_REACHED();
00382     }
00383 
00384     InvalidateWindowData(WC_VEHICLE_DETAILS, front->index);
00385     SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
00386     InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
00387   } else {
00388     /* Always invalidate the cache; querycost might have filled it. */
00389     v->InvalidateNewGRFCacheOfChain();
00390   }
00391 
00392   return cost;
00393 }
00394 
00404 CommandCost CmdStartStopVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00405 {
00406   /* Disable the effect of p2 bit 0, when DC_AUTOREPLACE is not set */
00407   if ((flags & DC_AUTOREPLACE) == 0) SetBit(p2, 0);
00408 
00409   Vehicle *v = Vehicle::GetIfValid(p1);
00410   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00411 
00412   CommandCost ret = CheckOwnership(v->owner);
00413   if (ret.Failed()) return ret;
00414 
00415   if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_VEHICLE_IS_DESTROYED);
00416 
00417   switch (v->type) {
00418     case VEH_TRAIN:
00419       if ((v->vehstatus & VS_STOPPED) && Train::From(v)->gcache.cached_power == 0) return_cmd_error(STR_ERROR_TRAIN_START_NO_CATENARY);
00420       break;
00421 
00422     case VEH_SHIP:
00423     case VEH_ROAD:
00424       break;
00425 
00426     case VEH_AIRCRAFT: {
00427       Aircraft *a = Aircraft::From(v);
00428       /* cannot stop airplane when in flight, or when taking off / landing */
00429       if (!(v->vehstatus & VS_CRASHED) && a->state >= STARTTAKEOFF && a->state < TERM7) return_cmd_error(STR_ERROR_AIRCRAFT_IS_IN_FLIGHT);
00430       break;
00431     }
00432 
00433     default: return CMD_ERROR;
00434   }
00435 
00436   /* Check if this vehicle can be started/stopped. The callback will fail or
00437    * return 0xFF if it can. */
00438   uint16 callback = GetVehicleCallback(CBID_VEHICLE_START_STOP_CHECK, 0, 0, v->engine_type, v);
00439   if (callback != CALLBACK_FAILED && GB(callback, 0, 8) != 0xFF && HasBit(p2, 0)) {
00440     StringID error = GetGRFStringID(GetEngineGRFID(v->engine_type), 0xD000 + callback);
00441     return_cmd_error(error);
00442   }
00443 
00444   if (flags & DC_EXEC) {
00445     if (v->IsStoppedInDepot() && (flags & DC_AUTOREPLACE) == 0) DeleteVehicleNews(p1, STR_NEWS_TRAIN_IS_WAITING + v->type);
00446 
00447     v->vehstatus ^= VS_STOPPED;
00448     if (v->type != VEH_TRAIN) v->cur_speed = 0; // trains can stop 'slowly'
00449     v->MarkDirty();
00450     SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00451     SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
00452     SetWindowClassesDirty(GetWindowClassForVehicleType(v->type));
00453   }
00454   return CommandCost();
00455 }
00456 
00468 CommandCost CmdMassStartStopVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00469 {
00470   VehicleList list;
00471   bool do_start = HasBit(p1, 0);
00472   bool vehicle_list_window = HasBit(p1, 1);
00473 
00474   VehicleListIdentifier vli;
00475   if (!vli.Unpack(p2)) return CMD_ERROR;
00476   if (!IsCompanyBuildableVehicleType(vli.vtype)) return CMD_ERROR;
00477 
00478   if (vehicle_list_window) {
00479     if (!GenerateVehicleSortList(&list, vli)) return CMD_ERROR;
00480   } else {
00481     /* Get the list of vehicles in the depot */
00482     BuildDepotVehicleList(vli.vtype, tile, &list, NULL);
00483   }
00484 
00485   for (uint i = 0; i < list.Length(); i++) {
00486     const Vehicle *v = list[i];
00487 
00488     if (!!(v->vehstatus & VS_STOPPED) != do_start) continue;
00489 
00490     if (!vehicle_list_window) {
00491       if (vli.vtype == VEH_TRAIN) {
00492         if (!Train::From(v)->IsInDepot()) continue;
00493       } else {
00494         if (!(v->vehstatus & VS_HIDDEN)) continue;
00495       }
00496     }
00497 
00498     /* Just try and don't care if some vehicle's can't be stopped. */
00499     DoCommand(tile, v->index, 0, flags, CMD_START_STOP_VEHICLE);
00500   }
00501 
00502   return CommandCost();
00503 }
00504 
00514 CommandCost CmdDepotSellAllVehicles(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00515 {
00516   VehicleList list;
00517 
00518   CommandCost cost(EXPENSES_NEW_VEHICLES);
00519   VehicleType vehicle_type = Extract<VehicleType, 0, 3>(p1);
00520   uint sell_command = GetCmdSellVeh(vehicle_type);
00521 
00522   if (!IsCompanyBuildableVehicleType(vehicle_type)) return CMD_ERROR;
00523 
00524   /* Get the list of vehicles in the depot */
00525   BuildDepotVehicleList(vehicle_type, tile, &list, &list);
00526 
00527   CommandCost last_error = CMD_ERROR;
00528   bool had_success = false;
00529   for (uint i = 0; i < list.Length(); i++) {
00530     CommandCost ret = DoCommand(tile, list[i]->index | (1 << 20), 0, flags, sell_command);
00531     if (ret.Succeeded()) {
00532       cost.AddCost(ret);
00533       had_success = true;
00534     } else {
00535       last_error = ret;
00536     }
00537   }
00538 
00539   return had_success ? cost : last_error;
00540 }
00541 
00551 CommandCost CmdDepotMassAutoReplace(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00552 {
00553   VehicleList list;
00554   CommandCost cost = CommandCost(EXPENSES_NEW_VEHICLES);
00555   VehicleType vehicle_type = Extract<VehicleType, 0, 3>(p1);
00556 
00557   if (!IsCompanyBuildableVehicleType(vehicle_type)) return CMD_ERROR;
00558   if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;
00559 
00560   /* Get the list of vehicles in the depot */
00561   BuildDepotVehicleList(vehicle_type, tile, &list, &list, true);
00562 
00563   for (uint i = 0; i < list.Length(); i++) {
00564     const Vehicle *v = list[i];
00565 
00566     /* Ensure that the vehicle completely in the depot */
00567     if (!v->IsInDepot()) continue;
00568 
00569     CommandCost ret = DoCommand(0, v->index, 0, flags, CMD_AUTOREPLACE_VEHICLE);
00570 
00571     if (ret.Succeeded()) cost.AddCost(ret);
00572   }
00573   return cost;
00574 }
00575 
00581 static bool IsUniqueVehicleName(const char *name)
00582 {
00583   const Vehicle *v;
00584 
00585   FOR_ALL_VEHICLES(v) {
00586     if (v->name != NULL && strcmp(v->name, name) == 0) return false;
00587   }
00588 
00589   return true;
00590 }
00591 
00597 static void CloneVehicleName(const Vehicle *src, Vehicle *dst)
00598 {
00599   char buf[256];
00600 
00601   /* Find the position of the first digit in the last group of digits. */
00602   size_t number_position;
00603   for (number_position = strlen(src->name); number_position > 0; number_position--) {
00604     /* The design of UTF-8 lets this work simply without having to check
00605      * for UTF-8 sequences. */
00606     if (src->name[number_position - 1] < '0' || src->name[number_position - 1] > '9') break;
00607   }
00608 
00609   /* Format buffer and determine starting number. */
00610   int num;
00611   byte padding = 0;
00612   if (number_position == strlen(src->name)) {
00613     /* No digit at the end, so start at number 2. */
00614     strecpy(buf, src->name, lastof(buf));
00615     strecat(buf, " ", lastof(buf));
00616     number_position = strlen(buf);
00617     num = 2;
00618   } else {
00619     /* Found digits, parse them and start at the next number. */
00620     strecpy(buf, src->name, lastof(buf));
00621     buf[number_position] = '\0';
00622     char *endptr;
00623     num = strtol(&src->name[number_position], &endptr, 10) + 1;
00624     padding = endptr - &src->name[number_position];
00625   }
00626 
00627   /* Check if this name is already taken. */
00628   for (int max_iterations = 1000; max_iterations > 0; max_iterations--, num++) {
00629     /* Attach the number to the temporary name. */
00630     seprintf(&buf[number_position], lastof(buf), "%0*d", padding, num);
00631 
00632     /* Check the name is unique. */
00633     if (IsUniqueVehicleName(buf)) {
00634       dst->name = strdup(buf);
00635       break;
00636     }
00637   }
00638 
00639   /* All done. If we didn't find a name, it'll just use its default. */
00640 }
00641 
00651 CommandCost CmdCloneVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00652 {
00653   CommandCost total_cost(EXPENSES_NEW_VEHICLES);
00654 
00655   Vehicle *v = Vehicle::GetIfValid(p1);
00656   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00657   Vehicle *v_front = v;
00658   Vehicle *w = NULL;
00659   Vehicle *w_front = NULL;
00660   Vehicle *w_rear = NULL;
00661 
00662   /*
00663    * v_front is the front engine in the original vehicle
00664    * v is the car/vehicle of the original vehicle that is currently being copied
00665    * w_front is the front engine of the cloned vehicle
00666    * w is the car/vehicle currently being cloned
00667    * w_rear is the rear end of the cloned train. It's used to add more cars and is only used by trains
00668    */
00669 
00670   CommandCost ret = CheckOwnership(v->owner);
00671   if (ret.Failed()) return ret;
00672 
00673   if (v->type == VEH_TRAIN && (!v->IsFrontEngine() || Train::From(v)->crash_anim_pos >= 4400)) return CMD_ERROR;
00674 
00675   /* check that we can allocate enough vehicles */
00676   if (!(flags & DC_EXEC)) {
00677     int veh_counter = 0;
00678     do {
00679       veh_counter++;
00680     } while ((v = v->Next()) != NULL);
00681 
00682     if (!Vehicle::CanAllocateItem(veh_counter)) {
00683       return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00684     }
00685   }
00686 
00687   v = v_front;
00688 
00689   do {
00690     if (v->type == VEH_TRAIN && Train::From(v)->IsRearDualheaded()) {
00691       /* we build the rear ends of multiheaded trains with the front ones */
00692       continue;
00693     }
00694 
00695     /* In case we're building a multi headed vehicle and the maximum number of
00696      * vehicles is almost reached (e.g. max trains - 1) not all vehicles would
00697      * be cloned. When the non-primary engines were build they were seen as
00698      * 'new' vehicles whereas they would immediately be joined with a primary
00699      * engine. This caused the vehicle to be not build as 'the limit' had been
00700      * reached, resulting in partially build vehicles and such. */
00701     DoCommandFlag build_flags = flags;
00702     if ((flags & DC_EXEC) && !v->IsPrimaryVehicle()) build_flags |= DC_AUTOREPLACE;
00703 
00704     CommandCost cost = DoCommand(tile, v->engine_type | (1 << 16), 0, build_flags, GetCmdBuildVeh(v));
00705 
00706     if (cost.Failed()) {
00707       /* Can't build a part, then sell the stuff we already made; clear up the mess */
00708       if (w_front != NULL) DoCommand(w_front->tile, w_front->index | (1 << 20), 0, flags, GetCmdSellVeh(w_front));
00709       return cost;
00710     }
00711 
00712     total_cost.AddCost(cost);
00713 
00714     if (flags & DC_EXEC) {
00715       w = Vehicle::Get(_new_vehicle_id);
00716 
00717       if (v->type == VEH_TRAIN && HasBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION)) {
00718         SetBit(Train::From(w)->flags, VRF_REVERSE_DIRECTION);
00719       }
00720 
00721       if (v->type == VEH_TRAIN && !v->IsFrontEngine()) {
00722         /* this s a train car
00723          * add this unit to the end of the train */
00724         CommandCost result = DoCommand(0, w->index | 1 << 20, w_rear->index, flags, CMD_MOVE_RAIL_VEHICLE);
00725         if (result.Failed()) {
00726           /* The train can't be joined to make the same consist as the original.
00727            * Sell what we already made (clean up) and return an error.           */
00728           DoCommand(w_front->tile, w_front->index | 1 << 20, 0, flags, GetCmdSellVeh(w_front));
00729           DoCommand(w_front->tile, w->index       | 1 << 20, 0, flags, GetCmdSellVeh(w));
00730           return result; // return error and the message returned from CMD_MOVE_RAIL_VEHICLE
00731         }
00732       } else {
00733         /* this is a front engine or not a train. */
00734         w_front = w;
00735         w->service_interval = v->service_interval;
00736       }
00737       w_rear = w; // trains needs to know the last car in the train, so they can add more in next loop
00738     }
00739   } while (v->type == VEH_TRAIN && (v = v->GetNextVehicle()) != NULL);
00740 
00741   if ((flags & DC_EXEC) && v_front->type == VEH_TRAIN) {
00742     /* for trains this needs to be the front engine due to the callback function */
00743     _new_vehicle_id = w_front->index;
00744   }
00745 
00746   if (flags & DC_EXEC) {
00747     /* Cloned vehicles belong to the same group */
00748     DoCommand(0, v_front->group_id, w_front->index, flags, CMD_ADD_VEHICLE_GROUP);
00749   }
00750 
00751 
00752   /* Take care of refitting. */
00753   w = w_front;
00754   v = v_front;
00755 
00756   /* Both building and refitting are influenced by newgrf callbacks, which
00757    * makes it impossible to accurately estimate the cloning costs. In
00758    * particular, it is possible for engines of the same type to be built with
00759    * different numbers of articulated parts, so when refitting we have to
00760    * loop over real vehicles first, and then the articulated parts of those
00761    * vehicles in a different loop. */
00762   do {
00763     do {
00764       if (flags & DC_EXEC) {
00765         assert(w != NULL);
00766 
00767         /* Find out what's the best sub type */
00768         byte subtype = GetBestFittingSubType(v, w);
00769         if (w->cargo_type != v->cargo_type || w->cargo_subtype != subtype) {
00770           CommandCost cost = DoCommand(0, w->index, v->cargo_type | 1U << 7 | (subtype << 8), flags, GetCmdRefitVeh(v));
00771           if (cost.Succeeded()) total_cost.AddCost(cost);
00772         }
00773 
00774         if (w->IsGroundVehicle() && w->HasArticulatedPart()) {
00775           w = w->GetNextArticulatedPart();
00776         } else {
00777           break;
00778         }
00779       } else {
00780         const Engine *e = Engine::Get(v->engine_type);
00781         CargoID initial_cargo = (e->CanCarryCargo() ? e->GetDefaultCargoType() : (CargoID)CT_INVALID);
00782 
00783         if (v->cargo_type != initial_cargo && initial_cargo != CT_INVALID) {
00784           total_cost.AddCost(GetRefitCost(v->engine_type));
00785         }
00786       }
00787 
00788       if (v->IsGroundVehicle() && v->HasArticulatedPart()) {
00789         v = v->GetNextArticulatedPart();
00790       } else {
00791         break;
00792       }
00793     } while (v != NULL);
00794 
00795     if ((flags & DC_EXEC) && v->type == VEH_TRAIN) w = w->GetNextVehicle();
00796   } while (v->type == VEH_TRAIN && (v = v->GetNextVehicle()) != NULL);
00797 
00798   if (flags & DC_EXEC) {
00799     /*
00800      * Set the orders of the vehicle. Cannot do it earlier as we need
00801      * the vehicle refitted before doing this, otherwise the moved
00802      * cargo types might not match (passenger vs non-passenger)
00803      */
00804     DoCommand(0, w_front->index | (p2 & 1 ? CO_SHARE : CO_COPY) << 30, v_front->index, flags, CMD_CLONE_ORDER);
00805 
00806     /* Now clone the vehicle's name, if it has one. */
00807     if (v_front->name != NULL) CloneVehicleName(v_front, w_front);
00808   }
00809 
00810   /* Since we can't estimate the cost of cloning a vehicle accurately we must
00811    * check whether the company has enough money manually. */
00812   if (!CheckCompanyHasMoney(total_cost)) {
00813     if (flags & DC_EXEC) {
00814       /* The vehicle has already been bought, so now it must be sold again. */
00815       DoCommand(w_front->tile, w_front->index | 1 << 20, 0, flags, GetCmdSellVeh(w_front));
00816     }
00817     return total_cost;
00818   }
00819 
00820   return total_cost;
00821 }
00822 
00830 static CommandCost SendAllVehiclesToDepot(DoCommandFlag flags, bool service, const VehicleListIdentifier &vli)
00831 {
00832   VehicleList list;
00833 
00834   if (!GenerateVehicleSortList(&list, vli)) return CMD_ERROR;
00835 
00836   /* Send all the vehicles to a depot */
00837   bool had_success = false;
00838   for (uint i = 0; i < list.Length(); i++) {
00839     const Vehicle *v = list[i];
00840     CommandCost ret = DoCommand(v->tile, v->index | (service ? DEPOT_SERVICE : 0U) | DEPOT_DONT_CANCEL, 0, flags, GetCmdSendToDepot(vli.vtype));
00841 
00842     if (ret.Succeeded()) {
00843       had_success = true;
00844 
00845       /* Return 0 if DC_EXEC is not set this is a valid goto depot command)
00846        * In this case we know that at least one vehicle can be sent to a depot
00847        * and we will issue the command. We can now safely quit the loop, knowing
00848        * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
00849       if (!(flags & DC_EXEC)) break;
00850     }
00851   }
00852 
00853   return had_success ? CommandCost() : CMD_ERROR;
00854 }
00855 
00867 CommandCost CmdSendVehicleToDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00868 {
00869   if (p1 & DEPOT_MASS_SEND) {
00870     /* Mass goto depot requested */
00871     VehicleListIdentifier vli;
00872     if (!vli.Unpack(p2)) return CMD_ERROR;
00873     return SendAllVehiclesToDepot(flags, (p1 & DEPOT_SERVICE) != 0, vli);
00874   }
00875 
00876   Vehicle *v = Vehicle::GetIfValid(GB(p1, 0, 20));
00877   if (v == NULL) return CMD_ERROR;
00878 
00879   return v->SendToDepot(flags, (DepotCommand)(p1 & DEPOT_COMMAND_MASK));
00880 }
00881 
00891 CommandCost CmdRenameVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00892 {
00893   Vehicle *v = Vehicle::GetIfValid(p1);
00894   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00895 
00896   CommandCost ret = CheckOwnership(v->owner);
00897   if (ret.Failed()) return ret;
00898 
00899   bool reset = StrEmpty(text);
00900 
00901   if (!reset) {
00902     if (Utf8StringLength(text) >= MAX_LENGTH_VEHICLE_NAME_CHARS) return CMD_ERROR;
00903     if (!(flags & DC_AUTOREPLACE) && !IsUniqueVehicleName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
00904   }
00905 
00906   if (flags & DC_EXEC) {
00907     free(v->name);
00908     v->name = reset ? NULL : strdup(text);
00909     InvalidateWindowClassesData(WC_TRAINS_LIST, 1);
00910     MarkWholeScreenDirty();
00911   }
00912 
00913   return CommandCost();
00914 }
00915 
00916 
00926 CommandCost CmdChangeServiceInt(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00927 {
00928   Vehicle *v = Vehicle::GetIfValid(p1);
00929   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00930 
00931   CommandCost ret = CheckOwnership(v->owner);
00932   if (ret.Failed()) return ret;
00933 
00934   uint16 serv_int = GetServiceIntervalClamped(p2, v->owner); // Double check the service interval from the user-input
00935   if (serv_int != p2) return CMD_ERROR;
00936 
00937   if (flags & DC_EXEC) {
00938     v->service_interval = serv_int;
00939     SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
00940   }
00941 
00942   return CommandCost();
00943 }

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