vehicle_cmd.cpp

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00001 /* $Id: vehicle_cmd.cpp 18866 2010-01-18 22:57:21Z 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   CommandCost return_value = CMD_ERROR;
00134   VehicleType vehicle_type = (VehicleType)GB(p2, 0, 5);
00135   bool start_stop = HasBit(p2, 5);
00136   bool vehicle_list_window = HasBit(p2, 6);
00137 
00138   if (vehicle_list_window) {
00139     uint32 id = p1;
00140     uint16 window_type = p2 & VLW_MASK;
00141 
00142     GenerateVehicleSortList(&list, vehicle_type, _current_company, id, window_type);
00143   } else {
00144     /* Get the list of vehicles in the depot */
00145     BuildDepotVehicleList(vehicle_type, tile, &list, NULL);
00146   }
00147 
00148   for (uint i = 0; i < list.Length(); i++) {
00149     const Vehicle *v = list[i];
00150 
00151     if (!!(v->vehstatus & VS_STOPPED) != start_stop) continue;
00152 
00153     if (!vehicle_list_window) {
00154       if (vehicle_type == VEH_TRAIN) {
00155         if (!Train::From(v)->IsInDepot()) continue;
00156       } else {
00157         if (!(v->vehstatus & VS_HIDDEN)) continue;
00158       }
00159     }
00160 
00161     CommandCost ret = DoCommand(tile, v->index, 0, flags, CMD_START_STOP_VEHICLE);
00162 
00163     if (ret.Succeeded()) {
00164       return_value = CommandCost();
00165       /* We know that the command is valid for at least one vehicle.
00166        * If we haven't set DC_EXEC, then there is no point in continueing because it will be valid */
00167       if (!(flags & DC_EXEC)) break;
00168     }
00169   }
00170 
00171   return return_value;
00172 }
00173 
00182 CommandCost CmdDepotSellAllVehicles(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00183 {
00184   VehicleList list;
00185 
00186   CommandCost cost(EXPENSES_NEW_VEHICLES);
00187   VehicleType vehicle_type = (VehicleType)GB(p1, 0, 8);
00188   uint sell_command = GetCmdSellVeh(vehicle_type);
00189 
00190   /* Get the list of vehicles in the depot */
00191   BuildDepotVehicleList(vehicle_type, tile, &list, &list);
00192 
00193   for (uint i = 0; i < list.Length(); i++) {
00194     CommandCost ret = DoCommand(tile, list[i]->index, 1, flags, sell_command);
00195     if (ret.Succeeded()) cost.AddCost(ret);
00196   }
00197 
00198   if (cost.GetCost() == 0) return CMD_ERROR; // no vehicles to sell
00199   return cost;
00200 }
00201 
00213 CommandCost CmdDepotMassAutoReplace(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00214 {
00215   VehicleList list;
00216   CommandCost cost = CommandCost(EXPENSES_NEW_VEHICLES);
00217   VehicleType vehicle_type = (VehicleType)GB(p1, 0, 8);
00218   bool all_or_nothing = HasBit(p2, 0);
00219 
00220   if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;
00221 
00222   /* Get the list of vehicles in the depot */
00223   BuildDepotVehicleList(vehicle_type, tile, &list, &list, true);
00224 
00225   bool did_something = false;
00226 
00227   for (uint i = 0; i < list.Length(); i++) {
00228     const Vehicle *v = list[i];
00229 
00230     /* Ensure that the vehicle completely in the depot */
00231     if (!v->IsInDepot()) continue;
00232 
00233     CommandCost ret = DoCommand(0, v->index, 0, flags, CMD_AUTOREPLACE_VEHICLE);
00234 
00235     if (ret.Succeeded()) {
00236       did_something = true;
00237       cost.AddCost(ret);
00238     } else {
00239       if (ret.GetErrorMessage() != STR_ERROR_AUTOREPLACE_NOTHING_TO_DO && all_or_nothing) {
00240         /* We failed to replace a vehicle even though we set all or nothing.
00241          * We should never reach this if DC_EXEC is set since then it should
00242          * have failed the estimation guess. */
00243         assert(!(flags & DC_EXEC));
00244         /* Now we will have to return an error. */
00245         return CMD_ERROR;
00246       }
00247     }
00248   }
00249 
00250   if (!did_something) {
00251     /* Either we didn't replace anything or something went wrong.
00252      * Either way we want to return an error and not execute this command. */
00253     cost = CMD_ERROR;
00254   }
00255 
00256   return cost;
00257 }
00258 
00263 static CommandCost GetRefitCost(EngineID engine_type)
00264 {
00265   ExpensesType expense_type;
00266   const Engine *e = Engine::Get(engine_type);
00267   Price base_price;
00268   uint cost_factor = e->info.refit_cost;
00269   switch (e->type) {
00270     case VEH_SHIP:
00271       base_price = PR_BUILD_VEHICLE_SHIP;
00272       expense_type = EXPENSES_SHIP_RUN;
00273       break;
00274 
00275     case VEH_ROAD:
00276       base_price = PR_BUILD_VEHICLE_ROAD;
00277       expense_type = EXPENSES_ROADVEH_RUN;
00278       break;
00279 
00280     case VEH_AIRCRAFT:
00281       base_price = PR_BUILD_VEHICLE_AIRCRAFT;
00282       expense_type = EXPENSES_AIRCRAFT_RUN;
00283       break;
00284 
00285     case VEH_TRAIN:
00286       base_price = (e->u.rail.railveh_type == RAILVEH_WAGON) ? PR_BUILD_VEHICLE_WAGON : PR_BUILD_VEHICLE_TRAIN;
00287       cost_factor <<= 1;
00288       expense_type = EXPENSES_TRAIN_RUN;
00289       break;
00290 
00291     default: NOT_REACHED();
00292   }
00293   return CommandCost(expense_type, GetPrice(base_price, cost_factor, e->grffile, -10));
00294 }
00295 
00306 CommandCost RefitVehicle(Vehicle *v, bool only_this, CargoID new_cid, byte new_subtype, DoCommandFlag flags)
00307 {
00308   CommandCost cost(v->GetExpenseType(false));
00309   uint total_capacity = 0;
00310 
00311   v->InvalidateNewGRFCacheOfChain();
00312   for (; v != NULL; v = (only_this ? NULL : v->Next())) {
00313     const Engine *e = Engine::Get(v->engine_type);
00314     if (!e->CanCarryCargo() || !HasBit(e->info.refit_mask, new_cid)) continue;
00315 
00316     /* Back up the vehicle's cargo type */
00317     CargoID temp_cid = v->cargo_type;
00318     byte temp_subtype = v->cargo_subtype;
00319     v->cargo_type = new_cid;
00320     v->cargo_subtype = new_subtype;
00321 
00322     uint16 mail_capacity;
00323     uint amount = GetVehicleCapacity(v, &mail_capacity);
00324     total_capacity += amount;
00325 
00326     /* Restore the original cargo type */
00327     v->cargo_type = temp_cid;
00328     v->cargo_subtype = temp_subtype;
00329 
00330     if (new_cid != v->cargo_type) {
00331       cost.AddCost(GetRefitCost(v->engine_type));
00332     }
00333 
00334     if (flags & DC_EXEC) {
00335       v->cargo.Truncate((v->cargo_type == new_cid) ? amount : 0);
00336       v->cargo_type = new_cid;
00337       v->cargo_cap = amount;
00338       v->cargo_subtype = new_subtype;
00339       if (v->type == VEH_AIRCRAFT) {
00340         Vehicle *u = v->Next();
00341         u->cargo_cap = mail_capacity;
00342         u->cargo.Truncate(mail_capacity);
00343       }
00344     }
00345   }
00346 
00347   _returned_refit_capacity = total_capacity;
00348   return cost;
00349 }
00350 
00355 static bool IsUniqueVehicleName(const char *name)
00356 {
00357   const Vehicle *v;
00358 
00359   FOR_ALL_VEHICLES(v) {
00360     if (v->name != NULL && strcmp(v->name, name) == 0) return false;
00361   }
00362 
00363   return true;
00364 }
00365 
00370 static void CloneVehicleName(const Vehicle *src, Vehicle *dst)
00371 {
00372   char buf[256];
00373 
00374   /* Find the position of the first digit in the last group of digits. */
00375   size_t number_position;
00376   for (number_position = strlen(src->name); number_position > 0; number_position--) {
00377     /* The design of UTF-8 lets this work simply without having to check
00378      * for UTF-8 sequences. */
00379     if (src->name[number_position - 1] < '0' || src->name[number_position - 1] > '9') break;
00380   }
00381 
00382   /* Format buffer and determine starting number. */
00383   int num;
00384   if (number_position == strlen(src->name)) {
00385     /* No digit at the end, so start at number 2. */
00386     strecpy(buf, src->name, lastof(buf));
00387     strecat(buf, " ", lastof(buf));
00388     number_position = strlen(buf);
00389     num = 2;
00390   } else {
00391     /* Found digits, parse them and start at the next number. */
00392     strecpy(buf, src->name, lastof(buf));
00393     buf[number_position] = '\0';
00394     num = strtol(&src->name[number_position], NULL, 10) + 1;
00395   }
00396 
00397   /* Check if this name is already taken. */
00398   for (int max_iterations = 1000; max_iterations > 0; max_iterations--, num++) {
00399     /* Attach the number to the temporary name. */
00400     seprintf(&buf[number_position], lastof(buf), "%d", num);
00401 
00402     /* Check the name is unique. */
00403     if (IsUniqueVehicleName(buf)) {
00404       dst->name = strdup(buf);
00405       break;
00406     }
00407   }
00408 
00409   /* All done. If we didn't find a name, it'll just use its default. */
00410 }
00411 
00420 CommandCost CmdCloneVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00421 {
00422   CommandCost total_cost(EXPENSES_NEW_VEHICLES);
00423   uint32 build_argument = 2;
00424 
00425   Vehicle *v = Vehicle::GetIfValid(p1);
00426   if (v == NULL) return CMD_ERROR;
00427   Vehicle *v_front = v;
00428   Vehicle *w = NULL;
00429   Vehicle *w_front = NULL;
00430   Vehicle *w_rear = NULL;
00431 
00432   /*
00433    * v_front is the front engine in the original vehicle
00434    * v is the car/vehicle of the original vehicle, that is currently being copied
00435    * w_front is the front engine of the cloned vehicle
00436    * w is the car/vehicle currently being cloned
00437    * w_rear is the rear end of the cloned train. It's used to add more cars and is only used by trains
00438    */
00439 
00440   if (!CheckOwnership(v->owner)) return CMD_ERROR;
00441 
00442   if (v->type == VEH_TRAIN && (!Train::From(v)->IsFrontEngine() || Train::From(v)->crash_anim_pos >= 4400)) return CMD_ERROR;
00443 
00444   /* check that we can allocate enough vehicles */
00445   if (!(flags & DC_EXEC)) {
00446     int veh_counter = 0;
00447     do {
00448       veh_counter++;
00449     } while ((v = v->Next()) != NULL);
00450 
00451     if (!Vehicle::CanAllocateItem(veh_counter)) {
00452       return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00453     }
00454   }
00455 
00456   v = v_front;
00457 
00458   do {
00459     if (v->type == VEH_TRAIN && Train::From(v)->IsRearDualheaded()) {
00460       /* we build the rear ends of multiheaded trains with the front ones */
00461       continue;
00462     }
00463 
00464     /* In case we're building a multi headed vehicle and the maximum number of
00465      * vehicles is almost reached (e.g. max trains - 1) not all vehicles would
00466      * be cloned. When the non-primary engines were build they were seen as
00467      * 'new' vehicles whereas they would immediately be joined with a primary
00468      * engine. This caused the vehicle to be not build as 'the limit' had been
00469      * reached, resulting in partially build vehicles and such. */
00470     DoCommandFlag build_flags = flags;
00471     if ((flags & DC_EXEC) && !v->IsPrimaryVehicle()) build_flags |= DC_AUTOREPLACE;
00472 
00473     CommandCost cost = DoCommand(tile, v->engine_type, build_argument, build_flags, GetCmdBuildVeh(v));
00474     build_argument = 3; // ensure that we only assign a number to the first engine
00475 
00476     if (cost.Failed()) {
00477       /* Can't build a part, then sell the stuff we already made; clear up the mess */
00478       if (w_front != NULL) DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00479       return cost;
00480     }
00481 
00482     total_cost.AddCost(cost);
00483 
00484     if (flags & DC_EXEC) {
00485       w = Vehicle::Get(_new_vehicle_id);
00486 
00487       if (v->type == VEH_TRAIN && HasBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION)) {
00488         SetBit(Train::From(w)->flags, VRF_REVERSE_DIRECTION);
00489       }
00490 
00491       if (v->type == VEH_TRAIN && !Train::From(v)->IsFrontEngine()) {
00492         /* this s a train car
00493          * add this unit to the end of the train */
00494         CommandCost result = DoCommand(0, (w_rear->index << 16) | w->index, 1, flags, CMD_MOVE_RAIL_VEHICLE);
00495         if (result.Failed()) {
00496           /* The train can't be joined to make the same consist as the original.
00497            * Sell what we already made (clean up) and return an error.           */
00498           DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00499           DoCommand(w_front->tile, w->index,       1, flags, GetCmdSellVeh(w));
00500           return result; // return error and the message returned from CMD_MOVE_RAIL_VEHICLE
00501         }
00502       } else {
00503         /* this is a front engine or not a train. */
00504         w_front = w;
00505         w->service_interval = v->service_interval;
00506       }
00507       w_rear = w; // trains needs to know the last car in the train, so they can add more in next loop
00508     }
00509   } while (v->type == VEH_TRAIN && (v = Train::From(v)->GetNextVehicle()) != NULL);
00510 
00511   if ((flags & DC_EXEC) && v_front->type == VEH_TRAIN) {
00512     /* for trains this needs to be the front engine due to the callback function */
00513     _new_vehicle_id = w_front->index;
00514   }
00515 
00516   if (flags & DC_EXEC) {
00517     /* Cloned vehicles belong to the same group */
00518     DoCommand(0, v_front->group_id, w_front->index, flags, CMD_ADD_VEHICLE_GROUP);
00519   }
00520 
00521 
00522   /* Take care of refitting. */
00523   w = w_front;
00524   v = v_front;
00525 
00526   /* Both building and refitting are influenced by newgrf callbacks, which
00527    * makes it impossible to accurately estimate the cloning costs. In
00528    * particular, it is possible for engines of the same type to be built with
00529    * different numbers of articulated parts, so when refitting we have to
00530    * loop over real vehicles first, and then the articulated parts of those
00531    * vehicles in a different loop. */
00532   do {
00533     do {
00534       if (flags & DC_EXEC) {
00535         assert(w != NULL);
00536 
00537         /* Find out what's the best sub type */
00538         byte subtype = GetBestFittingSubType(v, w);
00539         if (w->cargo_type != v->cargo_type || w->cargo_subtype != subtype) {
00540           CommandCost cost = DoCommand(0, w->index, v->cargo_type | (subtype << 8) | 1U << 16, flags, GetCmdRefitVeh(v));
00541           if (cost.Succeeded()) total_cost.AddCost(cost);
00542         }
00543 
00544         if (w->type == VEH_TRAIN && Train::From(w)->HasArticulatedPart()) {
00545           w = Train::From(w)->GetNextArticPart();
00546         } else if (w->type == VEH_ROAD && RoadVehicle::From(w)->HasArticulatedPart()) {
00547           w = w->Next();
00548         } else {
00549           break;
00550         }
00551       } else {
00552         const Engine *e = Engine::Get(v->engine_type);
00553         CargoID initial_cargo = (e->CanCarryCargo() ? e->GetDefaultCargoType() : (CargoID)CT_INVALID);
00554 
00555         if (v->cargo_type != initial_cargo && initial_cargo != CT_INVALID) {
00556           total_cost.AddCost(GetRefitCost(v->engine_type));
00557         }
00558       }
00559 
00560       if (v->type == VEH_TRAIN && Train::From(v)->HasArticulatedPart()) {
00561         v = Train::From(v)->GetNextArticPart();
00562       } else if (v->type == VEH_ROAD && RoadVehicle::From(v)->HasArticulatedPart()) {
00563         v = v->Next();
00564       } else {
00565         break;
00566       }
00567     } while (v != NULL);
00568 
00569     if ((flags & DC_EXEC) && v->type == VEH_TRAIN) w = Train::From(w)->GetNextVehicle();
00570   } while (v->type == VEH_TRAIN && (v = Train::From(v)->GetNextVehicle()) != NULL);
00571 
00572   if (flags & DC_EXEC) {
00573     /*
00574      * Set the orders of the vehicle. Cannot do it earlier as we need
00575      * the vehicle refitted before doing this, otherwise the moved
00576      * cargo types might not match (passenger vs non-passenger)
00577      */
00578     DoCommand(0, (v_front->index << 16) | w_front->index, p2 & 1 ? CO_SHARE : CO_COPY, flags, CMD_CLONE_ORDER);
00579 
00580     /* Now clone the vehicle's name, if it has one. */
00581     if (v_front->name != NULL) CloneVehicleName(v_front, w_front);
00582   }
00583 
00584   /* Since we can't estimate the cost of cloning a vehicle accurately we must
00585    * check whether the company has enough money manually. */
00586   if (!CheckCompanyHasMoney(total_cost)) {
00587     if (flags & DC_EXEC) {
00588       /* The vehicle has already been bought, so now it must be sold again. */
00589       DoCommand(w_front->tile, w_front->index, 1, flags, GetCmdSellVeh(w_front));
00590     }
00591     return total_cost;
00592   }
00593 
00594   return total_cost;
00595 }
00596 
00607 CommandCost SendAllVehiclesToDepot(VehicleType type, DoCommandFlag flags, bool service, Owner owner, uint16 vlw_flag, uint32 id)
00608 {
00609   VehicleList list;
00610 
00611   GenerateVehicleSortList(&list, type, owner, id, vlw_flag);
00612 
00613   /* Send all the vehicles to a depot */
00614   for (uint i = 0; i < list.Length(); i++) {
00615     const Vehicle *v = list[i];
00616     CommandCost ret = DoCommand(v->tile, v->index, (service ? 1 : 0) | DEPOT_DONT_CANCEL, flags, GetCmdSendToDepot(type));
00617 
00618     /* Return 0 if DC_EXEC is not set this is a valid goto depot command)
00619      * In this case we know that at least one vehicle can be sent to a depot
00620      * and we will issue the command. We can now safely quit the loop, knowing
00621      * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
00622     if (ret.Succeeded() && !(flags & DC_EXEC)) {
00623       return CommandCost();
00624     }
00625   }
00626 
00627   return (flags & DC_EXEC) ? CommandCost() : CMD_ERROR;
00628 }
00629 
00638 CommandCost CmdRenameVehicle(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   bool reset = StrEmpty(text);
00644 
00645   if (!reset) {
00646     if (strlen(text) >= MAX_LENGTH_VEHICLE_NAME_BYTES) return CMD_ERROR;
00647     if (!(flags & DC_AUTOREPLACE) && !IsUniqueVehicleName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
00648   }
00649 
00650   if (flags & DC_EXEC) {
00651     free(v->name);
00652     v->name = reset ? NULL : strdup(text);
00653     InvalidateWindowClassesData(WC_TRAINS_LIST, 1);
00654     MarkWholeScreenDirty();
00655   }
00656 
00657   return CommandCost();
00658 }
00659 
00660 
00669 CommandCost CmdChangeServiceInt(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00670 {
00671   Vehicle *v = Vehicle::GetIfValid(p1);
00672   if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
00673 
00674   uint16 serv_int = GetServiceIntervalClamped(p2, v->owner); // Double check the service interval from the user-input
00675   if (serv_int != p2) return CMD_ERROR;
00676 
00677   if (flags & DC_EXEC) {
00678     v->service_interval = serv_int;
00679     SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
00680   }
00681 
00682   return CommandCost();
00683 }

Generated on Thu Feb 4 17:20:30 2010 for OpenTTD by  doxygen 1.5.6