vehicle_cmd.cpp

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00001 /* $Id: vehicle_cmd.cpp 19024 2010-02-05 21:51:26Z rubidium $ */
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 "command_func.h"
00017 #include "company_func.h"
00018 #include "vehicle_gui.h"
00019 #include "train.h"
00020 #include "aircraft.h"
00021 #include "newgrf_engine.h"
00022 #include "newgrf_text.h"
00023 #include "functions.h"
00024 #include "window_func.h"
00025 #include "vehicle_func.h"
00026 #include "string_func.h"
00027 #include "depot_map.h"
00028 #include "vehiclelist.h"
00029 #include "engine_base.h"
00030 
00031 #include "table/strings.h"
00032 
00033 /* Tables used in vehicle.h to find the right command for a certain vehicle type */
00034 const uint32 _veh_build_proc_table[] = {
00035   CMD_BUILD_RAIL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_TRAIN),
00036   CMD_BUILD_ROAD_VEH     | CMD_MSG(STR_ERROR_CAN_T_BUY_ROAD_VEHICLE),
00037   CMD_BUILD_SHIP         | CMD_MSG(STR_ERROR_CAN_T_BUY_SHIP),
00038   CMD_BUILD_AIRCRAFT     | CMD_MSG(STR_ERROR_CAN_T_BUY_AIRCRAFT),
00039 };
00040 
00041 const uint32 _veh_sell_proc_table[] = {
00042   CMD_SELL_RAIL_WAGON | CMD_MSG(STR_ERROR_CAN_T_SELL_TRAIN),
00043   CMD_SELL_ROAD_VEH   | CMD_MSG(STR_ERROR_CAN_T_SELL_ROAD_VEHICLE),
00044   CMD_SELL_SHIP       | CMD_MSG(STR_ERROR_CAN_T_SELL_SHIP),
00045   CMD_SELL_AIRCRAFT   | CMD_MSG(STR_ERROR_CAN_T_SELL_AIRCRAFT),
00046 };
00047 
00048 const uint32 _veh_refit_proc_table[] = {
00049   CMD_REFIT_RAIL_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_REFIT_TRAIN),
00050   CMD_REFIT_ROAD_VEH     | CMD_MSG(STR_ERROR_CAN_T_REFIT_ROAD_VEHICLE),
00051   CMD_REFIT_SHIP         | CMD_MSG(STR_ERROR_CAN_T_REFIT_SHIP),
00052   CMD_REFIT_AIRCRAFT     | CMD_MSG(STR_ERROR_CAN_T_REFIT_AIRCRAFT),
00053 };
00054 
00055 const uint32 _send_to_depot_proc_table[] = {
00056   /* TrainGotoDepot has a nice randomizer in the pathfinder, which causes desyncs... */
00057   CMD_SEND_TRAIN_TO_DEPOT     | CMD_MSG(STR_ERROR_CAN_T_SEND_TRAIN_TO_DEPOT) | CMD_NO_TEST_IF_IN_NETWORK,
00058   CMD_SEND_ROADVEH_TO_DEPOT   | CMD_MSG(STR_ERROR_CAN_T_SEND_ROAD_VEHICLE_TO_DEPOT),
00059   CMD_SEND_SHIP_TO_DEPOT      | CMD_MSG(STR_ERROR_CAN_T_SEND_SHIP_TO_DEPOT),
00060   CMD_SEND_AIRCRAFT_TO_HANGAR | CMD_MSG(STR_ERROR_CAN_T_SEND_AIRCRAFT_TO_HANGAR),
00061 };
00062 
00071 CommandCost CmdStartStopVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00072 {
00073   /* Disable the effect of p2 bit 0, when DC_AUTOREPLACE is not set */
00074   if ((flags & DC_AUTOREPLACE) == 0) SetBit(p2, 0);
00075 
00076   Vehicle *v = Vehicle::GetIfValid(p1);
00077   if (v == NULL || !CheckOwnership(v->owner) || !v->IsPrimaryVehicle()) return CMD_ERROR;
00078 
00079   switch (v->type) {
00080     case VEH_TRAIN:
00081       if ((v->vehstatus & VS_STOPPED) && Train::From(v)->tcache.cached_power == 0) return_cmd_error(STR_ERROR_TRAIN_START_NO_CATENARY);
00082       break;
00083 
00084     case VEH_SHIP:
00085     case VEH_ROAD:
00086       break;
00087 
00088     case VEH_AIRCRAFT: {
00089       Aircraft *a = Aircraft::From(v);
00090       /* cannot stop airplane when in flight, or when taking off / landing */
00091       if (a->state >= STARTTAKEOFF && a->state < TERM7) return_cmd_error(STR_ERROR_AIRCRAFT_IS_IN_FLIGHT);
00092     } break;
00093 
00094     default: return CMD_ERROR;
00095   }
00096 
00097   /* Check if this vehicle can be started/stopped. The callback will fail or
00098    * return 0xFF if it can. */
00099   uint16 callback = GetVehicleCallback(CBID_VEHICLE_START_STOP_CHECK, 0, 0, v->engine_type, v);
00100   if (callback != CALLBACK_FAILED && GB(callback, 0, 8) != 0xFF && HasBit(p2, 0)) {
00101     StringID error = GetGRFStringID(GetEngineGRFID(v->engine_type), 0xD000 + callback);
00102     return_cmd_error(error);
00103   }
00104 
00105   if (flags & DC_EXEC) {
00106     if (v->IsStoppedInDepot() && (flags & DC_AUTOREPLACE) == 0) DeleteVehicleNews(p1, STR_NEWS_TRAIN_IS_WAITING + v->type);
00107 
00108     v->vehstatus ^= VS_STOPPED;
00109     if (v->type != VEH_TRAIN) v->cur_speed = 0; // trains can stop 'slowly'
00110     v->MarkDirty();
00111     SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00112     SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
00113     SetWindowClassesDirty(GetWindowClassForVehicleType(v->type));
00114   }
00115   return CommandCost();
00116 }
00117 
00130 CommandCost CmdMassStartStopVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00131 {
00132   VehicleList list;
00133   VehicleType vehicle_type = (VehicleType)GB(p2, 0, 5);
00134   bool start_stop = HasBit(p2, 5);
00135   bool vehicle_list_window = HasBit(p2, 6);
00136 
00137   if (vehicle_list_window) {
00138     uint32 id = p1;
00139     uint16 window_type = p2 & VLW_MASK;
00140 
00141     GenerateVehicleSortList(&list, vehicle_type, _current_company, id, window_type);
00142   } else {
00143     /* Get the list of vehicles in the depot */
00144     BuildDepotVehicleList(vehicle_type, tile, &list, NULL);
00145   }
00146 
00147   for (uint i = 0; i < list.Length(); i++) {
00148     const Vehicle *v = list[i];
00149 
00150     if (!!(v->vehstatus & VS_STOPPED) != start_stop) continue;
00151 
00152     if (!vehicle_list_window) {
00153       if (vehicle_type == VEH_TRAIN) {
00154         if (!Train::From(v)->IsInDepot()) continue;
00155       } else {
00156         if (!(v->vehstatus & VS_HIDDEN)) continue;
00157       }
00158     }
00159 
00160     /* Just try and don't care if some vehicle's can't be stopped. */
00161     DoCommand(tile, v->index, 0, flags, CMD_START_STOP_VEHICLE);
00162   }
00163 
00164   return CommandCost();
00165 }
00166 
00175 CommandCost CmdDepotSellAllVehicles(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00176 {
00177   VehicleList list;
00178 
00179   CommandCost cost(EXPENSES_NEW_VEHICLES);
00180   VehicleType vehicle_type = (VehicleType)GB(p1, 0, 8);
00181   uint sell_command = GetCmdSellVeh(vehicle_type);
00182 
00183   /* Get the list of vehicles in the depot */
00184   BuildDepotVehicleList(vehicle_type, tile, &list, &list);
00185 
00186   for (uint i = 0; i < list.Length(); i++) {
00187     CommandCost ret = DoCommand(tile, list[i]->index, 1, flags, sell_command);
00188     if (ret.Succeeded()) cost.AddCost(ret);
00189   }
00190 
00191   if (cost.GetCost() == 0) return CMD_ERROR; // no vehicles to sell
00192   return cost;
00193 }
00194 
00204 CommandCost CmdDepotMassAutoReplace(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00205 {
00206   VehicleList list;
00207   CommandCost cost = CommandCost(EXPENSES_NEW_VEHICLES);
00208   VehicleType vehicle_type = (VehicleType)GB(p1, 0, 8);
00209 
00210   if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;
00211 
00212   /* Get the list of vehicles in the depot */
00213   BuildDepotVehicleList(vehicle_type, tile, &list, &list, true);
00214 
00215   for (uint i = 0; i < list.Length(); i++) {
00216     const Vehicle *v = list[i];
00217 
00218     /* Ensure that the vehicle completely in the depot */
00219     if (!v->IsInDepot()) continue;
00220 
00221     CommandCost ret = DoCommand(0, v->index, 0, flags, CMD_AUTOREPLACE_VEHICLE);
00222 
00223     if (ret.Succeeded()) cost.AddCost(ret);
00224   }
00225   return cost;
00226 }
00227 
00232 static CommandCost GetRefitCost(EngineID engine_type)
00233 {
00234   ExpensesType expense_type;
00235   const Engine *e = Engine::Get(engine_type);
00236   Price base_price;
00237   uint cost_factor = e->info.refit_cost;
00238   switch (e->type) {
00239     case VEH_SHIP:
00240       base_price = PR_BUILD_VEHICLE_SHIP;
00241       expense_type = EXPENSES_SHIP_RUN;
00242       break;
00243 
00244     case VEH_ROAD:
00245       base_price = PR_BUILD_VEHICLE_ROAD;
00246       expense_type = EXPENSES_ROADVEH_RUN;
00247       break;
00248 
00249     case VEH_AIRCRAFT:
00250       base_price = PR_BUILD_VEHICLE_AIRCRAFT;
00251       expense_type = EXPENSES_AIRCRAFT_RUN;
00252       break;
00253 
00254     case VEH_TRAIN:
00255       base_price = (e->u.rail.railveh_type == RAILVEH_WAGON) ? PR_BUILD_VEHICLE_WAGON : PR_BUILD_VEHICLE_TRAIN;
00256       cost_factor <<= 1;
00257       expense_type = EXPENSES_TRAIN_RUN;
00258       break;
00259 
00260     default: NOT_REACHED();
00261   }
00262   return CommandCost(expense_type, GetPrice(base_price, cost_factor, e->grffile, -10));
00263 }
00264 
00275 CommandCost RefitVehicle(Vehicle *v, bool only_this, CargoID new_cid, byte new_subtype, DoCommandFlag flags)
00276 {
00277   CommandCost cost(v->GetExpenseType(false));
00278   uint total_capacity = 0;
00279 
00280   v->InvalidateNewGRFCacheOfChain();
00281   for (; v != NULL; v = (only_this ? NULL : v->Next())) {
00282     const Engine *e = Engine::Get(v->engine_type);
00283     if (!e->CanCarryCargo() || !HasBit(e->info.refit_mask, new_cid)) continue;
00284 
00285     /* Back up the vehicle's cargo type */
00286     CargoID temp_cid = v->cargo_type;
00287     byte temp_subtype = v->cargo_subtype;
00288     v->cargo_type = new_cid;
00289     v->cargo_subtype = new_subtype;
00290 
00291     uint16 mail_capacity;
00292     uint amount = GetVehicleCapacity(v, &mail_capacity);
00293     total_capacity += amount;
00294 
00295     /* Restore the original cargo type */
00296     v->cargo_type = temp_cid;
00297     v->cargo_subtype = temp_subtype;
00298 
00299     if (new_cid != v->cargo_type) {
00300       cost.AddCost(GetRefitCost(v->engine_type));
00301     }
00302 
00303     if (flags & DC_EXEC) {
00304       v->cargo.Truncate((v->cargo_type == new_cid) ? amount : 0);
00305       v->cargo_type = new_cid;
00306       v->cargo_cap = amount;
00307       v->cargo_subtype = new_subtype;
00308       if (v->type == VEH_AIRCRAFT) {
00309         Vehicle *u = v->Next();
00310         u->cargo_cap = mail_capacity;
00311         u->cargo.Truncate(mail_capacity);
00312       }
00313     }
00314   }
00315 
00316   _returned_refit_capacity = total_capacity;
00317   return cost;
00318 }
00319 
00324 static bool IsUniqueVehicleName(const char *name)
00325 {
00326   const Vehicle *v;
00327 
00328   FOR_ALL_VEHICLES(v) {
00329     if (v->name != NULL && strcmp(v->name, name) == 0) return false;
00330   }
00331 
00332   return true;
00333 }
00334 
00339 static void CloneVehicleName(const Vehicle *src, Vehicle *dst)
00340 {
00341   char buf[256];
00342 
00343   /* Find the position of the first digit in the last group of digits. */
00344   size_t number_position;
00345   for (number_position = strlen(src->name); number_position > 0; number_position--) {
00346     /* The design of UTF-8 lets this work simply without having to check
00347      * for UTF-8 sequences. */
00348     if (src->name[number_position - 1] < '0' || src->name[number_position - 1] > '9') break;
00349   }
00350 
00351   /* Format buffer and determine starting number. */
00352   int num;
00353   if (number_position == strlen(src->name)) {
00354     /* No digit at the end, so start at number 2. */
00355     strecpy(buf, src->name, lastof(buf));
00356     strecat(buf, " ", lastof(buf));
00357     number_position = strlen(buf);
00358     num = 2;
00359   } else {
00360     /* Found digits, parse them and start at the next number. */
00361     strecpy(buf, src->name, lastof(buf));
00362     buf[number_position] = '\0';
00363     num = strtol(&src->name[number_position], NULL, 10) + 1;
00364   }
00365 
00366   /* Check if this name is already taken. */
00367   for (int max_iterations = 1000; max_iterations > 0; max_iterations--, num++) {
00368     /* Attach the number to the temporary name. */
00369     seprintf(&buf[number_position], lastof(buf), "%d", num);
00370 
00371     /* Check the name is unique. */
00372     if (IsUniqueVehicleName(buf)) {
00373       dst->name = strdup(buf);
00374       break;
00375     }
00376   }
00377 
00378   /* All done. If we didn't find a name, it'll just use its default. */
00379 }
00380 
00389 CommandCost CmdCloneVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00390 {
00391   CommandCost total_cost(EXPENSES_NEW_VEHICLES);
00392   uint32 build_argument = 2;
00393 
00394   Vehicle *v = Vehicle::GetIfValid(p1);
00395   if (v == NULL) return CMD_ERROR;
00396   Vehicle *v_front = v;
00397   Vehicle *w = NULL;
00398   Vehicle *w_front = NULL;
00399   Vehicle *w_rear = NULL;
00400 
00401   /*
00402    * v_front is the front engine in the original vehicle
00403    * v is the car/vehicle of the original vehicle, that is currently being copied
00404    * w_front is the front engine of the cloned vehicle
00405    * w is the car/vehicle currently being cloned
00406    * w_rear is the rear end of the cloned train. It's used to add more cars and is only used by trains
00407    */
00408 
00409   if (!CheckOwnership(v->owner)) return CMD_ERROR;
00410 
00411   if (v->type == VEH_TRAIN && (!Train::From(v)->IsFrontEngine() || Train::From(v)->crash_anim_pos >= 4400)) return CMD_ERROR;
00412 
00413   /* check that we can allocate enough vehicles */
00414   if (!(flags & DC_EXEC)) {
00415     int veh_counter = 0;
00416     do {
00417       veh_counter++;
00418     } while ((v = v->Next()) != NULL);
00419 
00420     if (!Vehicle::CanAllocateItem(veh_counter)) {
00421       return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00422     }
00423   }
00424 
00425   v = v_front;
00426 
00427   do {
00428     if (v->type == VEH_TRAIN && Train::From(v)->IsRearDualheaded()) {
00429       /* we build the rear ends of multiheaded trains with the front ones */
00430       continue;
00431     }
00432 
00433     /* In case we're building a multi headed vehicle and the maximum number of
00434      * vehicles is almost reached (e.g. max trains - 1) not all vehicles would
00435      * be cloned. When the non-primary engines were build they were seen as
00436      * 'new' vehicles whereas they would immediately be joined with a primary
00437      * engine. This caused the vehicle to be not build as 'the limit' had been
00438      * reached, resulting in partially build vehicles and such. */
00439     DoCommandFlag build_flags = flags;
00440     if ((flags & DC_EXEC) && !v->IsPrimaryVehicle()) build_flags |= DC_AUTOREPLACE;
00441 
00442     CommandCost cost = DoCommand(tile, v->engine_type, build_argument, build_flags, GetCmdBuildVeh(v));
00443     build_argument = 3; // ensure that we only assign a number to the first engine
00444 
00445     if (cost.Failed()) {
00446       /* Can't build a part, then sell the stuff we already made; clear up the mess */
00447       if (w_front != NULL) DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00448       return cost;
00449     }
00450 
00451     total_cost.AddCost(cost);
00452 
00453     if (flags & DC_EXEC) {
00454       w = Vehicle::Get(_new_vehicle_id);
00455 
00456       if (v->type == VEH_TRAIN && HasBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION)) {
00457         SetBit(Train::From(w)->flags, VRF_REVERSE_DIRECTION);
00458       }
00459 
00460       if (v->type == VEH_TRAIN && !Train::From(v)->IsFrontEngine()) {
00461         /* this s a train car
00462          * add this unit to the end of the train */
00463         CommandCost result = DoCommand(0, (w_rear->index << 16) | w->index, 1, flags, CMD_MOVE_RAIL_VEHICLE);
00464         if (result.Failed()) {
00465           /* The train can't be joined to make the same consist as the original.
00466            * Sell what we already made (clean up) and return an error.           */
00467           DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00468           DoCommand(w_front->tile, w->index,       1, flags, GetCmdSellVeh(w));
00469           return result; // return error and the message returned from CMD_MOVE_RAIL_VEHICLE
00470         }
00471       } else {
00472         /* this is a front engine or not a train. */
00473         w_front = w;
00474         w->service_interval = v->service_interval;
00475       }
00476       w_rear = w; // trains needs to know the last car in the train, so they can add more in next loop
00477     }
00478   } while (v->type == VEH_TRAIN && (v = Train::From(v)->GetNextVehicle()) != NULL);
00479 
00480   if ((flags & DC_EXEC) && v_front->type == VEH_TRAIN) {
00481     /* for trains this needs to be the front engine due to the callback function */
00482     _new_vehicle_id = w_front->index;
00483   }
00484 
00485   if (flags & DC_EXEC) {
00486     /* Cloned vehicles belong to the same group */
00487     DoCommand(0, v_front->group_id, w_front->index, flags, CMD_ADD_VEHICLE_GROUP);
00488   }
00489 
00490 
00491   /* Take care of refitting. */
00492   w = w_front;
00493   v = v_front;
00494 
00495   /* Both building and refitting are influenced by newgrf callbacks, which
00496    * makes it impossible to accurately estimate the cloning costs. In
00497    * particular, it is possible for engines of the same type to be built with
00498    * different numbers of articulated parts, so when refitting we have to
00499    * loop over real vehicles first, and then the articulated parts of those
00500    * vehicles in a different loop. */
00501   do {
00502     do {
00503       if (flags & DC_EXEC) {
00504         assert(w != NULL);
00505 
00506         /* Find out what's the best sub type */
00507         byte subtype = GetBestFittingSubType(v, w);
00508         if (w->cargo_type != v->cargo_type || w->cargo_subtype != subtype) {
00509           CommandCost cost = DoCommand(0, w->index, v->cargo_type | (subtype << 8) | 1U << 16, flags, GetCmdRefitVeh(v));
00510           if (cost.Succeeded()) total_cost.AddCost(cost);
00511         }
00512 
00513         if (w->type == VEH_TRAIN && Train::From(w)->HasArticulatedPart()) {
00514           w = Train::From(w)->GetNextArticPart();
00515         } else if (w->type == VEH_ROAD && RoadVehicle::From(w)->HasArticulatedPart()) {
00516           w = w->Next();
00517         } else {
00518           break;
00519         }
00520       } else {
00521         const Engine *e = Engine::Get(v->engine_type);
00522         CargoID initial_cargo = (e->CanCarryCargo() ? e->GetDefaultCargoType() : (CargoID)CT_INVALID);
00523 
00524         if (v->cargo_type != initial_cargo && initial_cargo != CT_INVALID) {
00525           total_cost.AddCost(GetRefitCost(v->engine_type));
00526         }
00527       }
00528 
00529       if (v->type == VEH_TRAIN && Train::From(v)->HasArticulatedPart()) {
00530         v = Train::From(v)->GetNextArticPart();
00531       } else if (v->type == VEH_ROAD && RoadVehicle::From(v)->HasArticulatedPart()) {
00532         v = v->Next();
00533       } else {
00534         break;
00535       }
00536     } while (v != NULL);
00537 
00538     if ((flags & DC_EXEC) && v->type == VEH_TRAIN) w = Train::From(w)->GetNextVehicle();
00539   } while (v->type == VEH_TRAIN && (v = Train::From(v)->GetNextVehicle()) != NULL);
00540 
00541   if (flags & DC_EXEC) {
00542     /*
00543      * Set the orders of the vehicle. Cannot do it earlier as we need
00544      * the vehicle refitted before doing this, otherwise the moved
00545      * cargo types might not match (passenger vs non-passenger)
00546      */
00547     DoCommand(0, (v_front->index << 16) | w_front->index, p2 & 1 ? CO_SHARE : CO_COPY, flags, CMD_CLONE_ORDER);
00548 
00549     /* Now clone the vehicle's name, if it has one. */
00550     if (v_front->name != NULL) CloneVehicleName(v_front, w_front);
00551   }
00552 
00553   /* Since we can't estimate the cost of cloning a vehicle accurately we must
00554    * check whether the company has enough money manually. */
00555   if (!CheckCompanyHasMoney(total_cost)) {
00556     if (flags & DC_EXEC) {
00557       /* The vehicle has already been bought, so now it must be sold again. */
00558       DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00559     }
00560     return total_cost;
00561   }
00562 
00563   return total_cost;
00564 }
00565 
00576 CommandCost SendAllVehiclesToDepot(VehicleType type, DoCommandFlag flags, bool service, Owner owner, uint16 vlw_flag, uint32 id)
00577 {
00578   VehicleList list;
00579 
00580   GenerateVehicleSortList(&list, type, owner, id, vlw_flag);
00581 
00582   /* Send all the vehicles to a depot */
00583   for (uint i = 0; i < list.Length(); i++) {
00584     const Vehicle *v = list[i];
00585     CommandCost ret = DoCommand(v->tile, v->index, (service ? 1 : 0) | DEPOT_DONT_CANCEL, flags, GetCmdSendToDepot(type));
00586 
00587     /* Return 0 if DC_EXEC is not set this is a valid goto depot command)
00588      * In this case we know that at least one vehicle can be sent to a depot
00589      * and we will issue the command. We can now safely quit the loop, knowing
00590      * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
00591     if (ret.Succeeded() && !(flags & DC_EXEC)) {
00592       return CommandCost();
00593     }
00594   }
00595 
00596   return (flags & DC_EXEC) ? CommandCost() : CMD_ERROR;
00597 }
00598 
00607 CommandCost CmdRenameVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00608 {
00609   Vehicle *v = Vehicle::GetIfValid(p1);
00610   if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
00611 
00612   bool reset = StrEmpty(text);
00613 
00614   if (!reset) {
00615     if (strlen(text) >= MAX_LENGTH_VEHICLE_NAME_BYTES) return CMD_ERROR;
00616     if (!(flags & DC_AUTOREPLACE) && !IsUniqueVehicleName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
00617   }
00618 
00619   if (flags & DC_EXEC) {
00620     free(v->name);
00621     v->name = reset ? NULL : strdup(text);
00622     InvalidateWindowClassesData(WC_TRAINS_LIST, 1);
00623     MarkWholeScreenDirty();
00624   }
00625 
00626   return CommandCost();
00627 }
00628 
00629 
00638 CommandCost CmdChangeServiceInt(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00639 {
00640   Vehicle *v = Vehicle::GetIfValid(p1);
00641   if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
00642 
00643   uint16 serv_int = GetServiceIntervalClamped(p2, v->owner); // Double check the service interval from the user-input
00644   if (serv_int != p2) return CMD_ERROR;
00645 
00646   if (flags & DC_EXEC) {
00647     v->service_interval = serv_int;
00648     SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
00649   }
00650 
00651   return CommandCost();
00652 }

Generated on Wed Mar 17 23:50:19 2010 for OpenTTD by  doxygen 1.6.1