order_cmd.cpp

Go to the documentation of this file.
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 "debug.h"
00014 #include "cmd_helper.h"
00015 #include "command_func.h"
00016 #include "company_func.h"
00017 #include "news_func.h"
00018 #include "strings_func.h"
00019 #include "timetable.h"
00020 #include "vehicle_func.h"
00021 #include "depot_base.h"
00022 #include "core/pool_func.hpp"
00023 #include "core/random_func.hpp"
00024 #include "aircraft.h"
00025 #include "roadveh.h"
00026 #include "station_base.h"
00027 #include "waypoint_base.h"
00028 #include "company_base.h"
00029 #include "order_backup.h"
00030 
00031 #include "table/strings.h"
00032 
00033 /* DestinationID must be at least as large as every these below, because it can
00034  * be any of them
00035  */
00036 assert_compile(sizeof(DestinationID) >= sizeof(DepotID));
00037 assert_compile(sizeof(DestinationID) >= sizeof(StationID));
00038 
00039 OrderPool _order_pool("Order");
00040 INSTANTIATE_POOL_METHODS(Order)
00041 OrderListPool _orderlist_pool("OrderList");
00042 INSTANTIATE_POOL_METHODS(OrderList)
00043 
00045 Order::~Order()
00046 {
00047   if (CleaningPool()) return;
00048 
00049   /* We can visit oil rigs and buoys that are not our own. They will be shown in
00050    * the list of stations. So, we need to invalidate that window if needed. */
00051   if (this->IsType(OT_GOTO_STATION) || this->IsType(OT_GOTO_WAYPOINT)) {
00052     BaseStation *bs = BaseStation::GetIfValid(this->GetDestination());
00053     if (bs != NULL && bs->owner == OWNER_NONE) InvalidateWindowClassesData(WC_STATION_LIST, 0);
00054   }
00055 }
00056 
00061 void Order::Free()
00062 {
00063   this->type  = OT_NOTHING;
00064   this->flags = 0;
00065   this->dest  = 0;
00066   this->next  = NULL;
00067 }
00068 
00073 void Order::MakeGoToStation(StationID destination)
00074 {
00075   this->type = OT_GOTO_STATION;
00076   this->flags = 0;
00077   this->dest = destination;
00078 }
00079 
00088 void Order::MakeGoToDepot(DepotID destination, OrderDepotTypeFlags order, OrderNonStopFlags non_stop_type, OrderDepotActionFlags action, CargoID cargo)
00089 {
00090   this->type = OT_GOTO_DEPOT;
00091   this->SetDepotOrderType(order);
00092   this->SetDepotActionType(action);
00093   this->SetNonStopType(non_stop_type);
00094   this->dest = destination;
00095   this->SetRefit(cargo);
00096 }
00097 
00102 void Order::MakeGoToWaypoint(StationID destination)
00103 {
00104   this->type = OT_GOTO_WAYPOINT;
00105   this->flags = 0;
00106   this->dest = destination;
00107 }
00108 
00113 void Order::MakeLoading(bool ordered)
00114 {
00115   this->type = OT_LOADING;
00116   if (!ordered) this->flags = 0;
00117 }
00118 
00122 void Order::MakeLeaveStation()
00123 {
00124   this->type = OT_LEAVESTATION;
00125   this->flags = 0;
00126 }
00127 
00131 void Order::MakeDummy()
00132 {
00133   this->type = OT_DUMMY;
00134   this->flags = 0;
00135 }
00136 
00141 void Order::MakeConditional(VehicleOrderID order)
00142 {
00143   this->type = OT_CONDITIONAL;
00144   this->flags = order;
00145   this->dest = 0;
00146 }
00147 
00152 void Order::MakeImplicit(StationID destination)
00153 {
00154   this->type = OT_IMPLICIT;
00155   this->dest = destination;
00156 }
00157 
00163 void Order::SetRefit(CargoID cargo)
00164 {
00165   this->refit_cargo = cargo;
00166 }
00167 
00173 bool Order::Equals(const Order &other) const
00174 {
00175   /* In case of go to nearest depot orders we need "only" compare the flags
00176    * with the other and not the nearest depot order bit or the actual
00177    * destination because those get clear/filled in during the order
00178    * evaluation. If we do not do this the order will continuously be seen as
00179    * a different order and it will try to find a "nearest depot" every tick. */
00180   if ((this->IsType(OT_GOTO_DEPOT) && this->type == other.type) &&
00181       ((this->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0 ||
00182        (other.GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0)) {
00183     return this->GetDepotOrderType() == other.GetDepotOrderType() &&
00184         (this->GetDepotActionType() & ~ODATFB_NEAREST_DEPOT) == (other.GetDepotActionType() & ~ODATFB_NEAREST_DEPOT);
00185   }
00186 
00187   return this->type == other.type && this->flags == other.flags && this->dest == other.dest;
00188 }
00189 
00196 uint32 Order::Pack() const
00197 {
00198   return this->dest << 16 | this->flags << 8 | this->type;
00199 }
00200 
00206 uint16 Order::MapOldOrder() const
00207 {
00208   uint16 order = this->GetType();
00209   switch (this->type) {
00210     case OT_GOTO_STATION:
00211       if (this->GetUnloadType() & OUFB_UNLOAD) SetBit(order, 5);
00212       if (this->GetLoadType() & OLFB_FULL_LOAD) SetBit(order, 6);
00213       if (this->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS) SetBit(order, 7);
00214       order |= GB(this->GetDestination(), 0, 8) << 8;
00215       break;
00216     case OT_GOTO_DEPOT:
00217       if (!(this->GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) SetBit(order, 6);
00218       SetBit(order, 7);
00219       order |= GB(this->GetDestination(), 0, 8) << 8;
00220       break;
00221     case OT_LOADING:
00222       if (this->GetLoadType() & OLFB_FULL_LOAD) SetBit(order, 6);
00223       break;
00224   }
00225   return order;
00226 }
00227 
00232 Order::Order(uint32 packed)
00233 {
00234   this->type    = (OrderType)GB(packed,  0,  8);
00235   this->flags   = GB(packed,  8,  8);
00236   this->dest    = GB(packed, 16, 16);
00237   this->next    = NULL;
00238   this->refit_cargo   = CT_NO_REFIT;
00239   this->wait_time     = 0;
00240   this->travel_time   = 0;
00241   this->max_speed     = UINT16_MAX;
00242 }
00243 
00249 void InvalidateVehicleOrder(const Vehicle *v, int data)
00250 {
00251   SetWindowDirty(WC_VEHICLE_VIEW, v->index);
00252 
00253   if (data != 0) {
00254     /* Calls SetDirty() too */
00255     InvalidateWindowData(WC_VEHICLE_ORDERS,    v->index, data);
00256     InvalidateWindowData(WC_VEHICLE_TIMETABLE, v->index, data);
00257     return;
00258   }
00259 
00260   SetWindowDirty(WC_VEHICLE_ORDERS,    v->index);
00261   SetWindowDirty(WC_VEHICLE_TIMETABLE, v->index);
00262 }
00263 
00271 void Order::AssignOrder(const Order &other)
00272 {
00273   this->type  = other.type;
00274   this->flags = other.flags;
00275   this->dest  = other.dest;
00276 
00277   this->refit_cargo   = other.refit_cargo;
00278 
00279   this->wait_time   = other.wait_time;
00280   this->travel_time = other.travel_time;
00281   this->max_speed   = other.max_speed;
00282 }
00283 
00289 void OrderList::Initialize(Order *chain, Vehicle *v)
00290 {
00291   this->first = chain;
00292   this->first_shared = v;
00293 
00294   this->num_orders = 0;
00295   this->num_manual_orders = 0;
00296   this->num_vehicles = 1;
00297   this->timetable_duration = 0;
00298 
00299   for (Order *o = this->first; o != NULL; o = o->next) {
00300     ++this->num_orders;
00301     if (!o->IsType(OT_IMPLICIT)) ++this->num_manual_orders;
00302     this->timetable_duration += o->wait_time + o->travel_time;
00303   }
00304 
00305   for (Vehicle *u = this->first_shared->PreviousShared(); u != NULL; u = u->PreviousShared()) {
00306     ++this->num_vehicles;
00307     this->first_shared = u;
00308   }
00309 
00310   for (const Vehicle *u = v->NextShared(); u != NULL; u = u->NextShared()) ++this->num_vehicles;
00311 }
00312 
00318 void OrderList::FreeChain(bool keep_orderlist)
00319 {
00320   Order *next;
00321   for (Order *o = this->first; o != NULL; o = next) {
00322     next = o->next;
00323     delete o;
00324   }
00325 
00326   if (keep_orderlist) {
00327     this->first = NULL;
00328     this->num_orders = 0;
00329     this->num_manual_orders = 0;
00330     this->timetable_duration = 0;
00331   } else {
00332     delete this;
00333   }
00334 }
00335 
00341 Order *OrderList::GetOrderAt(int index) const
00342 {
00343   if (index < 0) return NULL;
00344 
00345   Order *order = this->first;
00346 
00347   while (order != NULL && index-- > 0) {
00348     order = order->next;
00349   }
00350   return order;
00351 }
00352 
00362 const Order *OrderList::GetBestLoadableNext(const Vehicle *v, const Order *o2, const Order *o1) const
00363 {
00364   SmallMap<CargoID, uint> capacities;
00365   v->GetConsistFreeCapacities(capacities);
00366   uint loadable1 = 0;
00367   uint loadable2 = 0;
00368   StationID st1 = o1->GetDestination();
00369   StationID st2 = o2->GetDestination();
00370   const Station *cur_station = Station::Get(v->last_station_visited);
00371   for (SmallPair<CargoID, uint> *i = capacities.Begin(); i != capacities.End(); ++i) {
00372     const StationCargoPacketMap *loadable_packets = cur_station->goods[i->first].cargo.Packets();
00373     uint loadable_cargo = 0;
00374     std::pair<StationCargoPacketMap::const_iterator, StationCargoPacketMap::const_iterator> p =
00375         loadable_packets->equal_range(st1);
00376     for (StationCargoPacketMap::const_iterator j = p.first; j != p.second; ++j) {
00377       loadable_cargo = (*j)->Count();
00378     }
00379     loadable1 += min(i->second, loadable_cargo);
00380 
00381     loadable_cargo = 0;
00382     p = loadable_packets->equal_range(st2);
00383     for (StationCargoPacketMap::const_iterator j = p.first; j != p.second; ++j) {
00384       loadable_cargo = (*j)->Count();
00385     }
00386     loadable2 += min(i->second, loadable_cargo);
00387   }
00388   if (loadable1 == loadable2) return RandomRange(2) == 0 ? o1 : o2;
00389   return loadable1 > loadable2 ? o1 : o2;
00390 }
00391 
00403 const Order *OrderList::GetNextStoppingOrder(const Vehicle *v, const Order *next, uint hops, bool is_loading) const
00404 {
00405   if (hops > this->GetNumOrders() || next == NULL) return NULL;
00406 
00407   if (next->IsType(OT_CONDITIONAL)) {
00408     if (is_loading && next->GetConditionVariable() == OCV_LOAD_PERCENTAGE) {
00409       /* If the condition is based on load percentage we can't
00410        * tell what it will do. So we choose randomly. */
00411       const Order *skip_to = this->GetNextStoppingOrder(v,
00412           this->GetOrderAt(next->GetConditionSkipToOrder()),
00413           hops + 1);
00414       const Order *advance = this->GetNextStoppingOrder(v,
00415           this->GetNext(next), hops + 1);
00416       if (advance == NULL) return skip_to;
00417       if (skip_to == NULL) return advance;
00418       return this->GetBestLoadableNext(v, skip_to, advance);
00419     }
00420     /* Otherwise we're optimistic and expect that the
00421      * condition value won't change until it's evaluated. */
00422     VehicleOrderID skip_to = ProcessConditionalOrder(next, v);
00423     if (skip_to != INVALID_VEH_ORDER_ID) {
00424       return this->GetNextStoppingOrder(v, this->GetOrderAt(skip_to),
00425           hops + 1);
00426     }
00427     return this->GetNextStoppingOrder(v, this->GetNext(next), hops + 1);
00428   }
00429 
00430   if (next->IsType(OT_GOTO_DEPOT)) {
00431     if (next->GetDepotActionType() == ODATFB_HALT) return NULL;
00432     if (next->IsRefit()) return next;
00433   }
00434 
00435   if (!next->CanLoadOrUnload()) {
00436     return this->GetNextStoppingOrder(v, this->GetNext(next), hops + 1);
00437   }
00438 
00439   return next;
00440 }
00441 
00449 StationID OrderList::GetNextStoppingStation(const Vehicle *v) const
00450 {
00451 
00452   const Order *next = this->GetOrderAt(v->cur_implicit_order_index);
00453   if (next == NULL) {
00454     next = this->GetFirstOrder();
00455     if (next == NULL) return INVALID_STATION;
00456   } else {
00457     /* GetNext never returns NULL if there is a valid station in the list.
00458      * As the given "next" is already valid and a station in the list, we
00459      * don't have to check for NULL here.
00460      */
00461     next = this->GetNext(next);
00462     assert(next != NULL);
00463   }
00464 
00465   uint hops = 0;
00466   do {
00467     next = this->GetNextStoppingOrder(v, next, ++hops, true);
00468     /* Don't return a next stop if the vehicle has to unload everything. */
00469     if (next == NULL || (next->GetDestination() == v->last_station_visited &&
00470         (next->GetUnloadType() & (OUFB_TRANSFER | OUFB_UNLOAD)) == 0)) {
00471       return INVALID_STATION;
00472     }
00473   } while (next->IsType(OT_GOTO_DEPOT) || next->GetDestination() == v->last_station_visited);
00474 
00475   return next->GetDestination();
00476 }
00477 
00483 void OrderList::InsertOrderAt(Order *new_order, int index)
00484 {
00485   if (this->first == NULL) {
00486     this->first = new_order;
00487   } else {
00488     if (index == 0) {
00489       /* Insert as first or only order */
00490       new_order->next = this->first;
00491       this->first = new_order;
00492     } else if (index >= this->num_orders) {
00493       /* index is after the last order, add it to the end */
00494       this->GetLastOrder()->next = new_order;
00495     } else {
00496       /* Put the new order in between */
00497       Order *order = this->GetOrderAt(index - 1);
00498       new_order->next = order->next;
00499       order->next = new_order;
00500     }
00501   }
00502   ++this->num_orders;
00503   if (!new_order->IsType(OT_IMPLICIT)) ++this->num_manual_orders;
00504   this->timetable_duration += new_order->wait_time + new_order->travel_time;
00505 
00506   /* We can visit oil rigs and buoys that are not our own. They will be shown in
00507    * the list of stations. So, we need to invalidate that window if needed. */
00508   if (new_order->IsType(OT_GOTO_STATION) || new_order->IsType(OT_GOTO_WAYPOINT)) {
00509     BaseStation *bs = BaseStation::Get(new_order->GetDestination());
00510     if (bs->owner == OWNER_NONE) InvalidateWindowClassesData(WC_STATION_LIST, 0);
00511   }
00512 
00513 }
00514 
00515 
00520 void OrderList::DeleteOrderAt(int index)
00521 {
00522   if (index >= this->num_orders) return;
00523 
00524   Order *to_remove;
00525 
00526   if (index == 0) {
00527     to_remove = this->first;
00528     this->first = to_remove->next;
00529   } else {
00530     Order *prev = GetOrderAt(index - 1);
00531     to_remove = prev->next;
00532     prev->next = to_remove->next;
00533   }
00534   --this->num_orders;
00535   if (!to_remove->IsType(OT_IMPLICIT)) --this->num_manual_orders;
00536   this->timetable_duration -= (to_remove->wait_time + to_remove->travel_time);
00537   delete to_remove;
00538 }
00539 
00545 void OrderList::MoveOrder(int from, int to)
00546 {
00547   if (from >= this->num_orders || to >= this->num_orders || from == to) return;
00548 
00549   Order *moving_one;
00550 
00551   /* Take the moving order out of the pointer-chain */
00552   if (from == 0) {
00553     moving_one = this->first;
00554     this->first = moving_one->next;
00555   } else {
00556     Order *one_before = GetOrderAt(from - 1);
00557     moving_one = one_before->next;
00558     one_before->next = moving_one->next;
00559   }
00560 
00561   /* Insert the moving_order again in the pointer-chain */
00562   if (to == 0) {
00563     moving_one->next = this->first;
00564     this->first = moving_one;
00565   } else {
00566     Order *one_before = GetOrderAt(to - 1);
00567     moving_one->next = one_before->next;
00568     one_before->next = moving_one;
00569   }
00570 }
00571 
00577 void OrderList::RemoveVehicle(Vehicle *v)
00578 {
00579   --this->num_vehicles;
00580   if (v == this->first_shared) this->first_shared = v->NextShared();
00581 }
00582 
00587 bool OrderList::IsVehicleInSharedOrdersList(const Vehicle *v) const
00588 {
00589   for (const Vehicle *v_shared = this->first_shared; v_shared != NULL; v_shared = v_shared->NextShared()) {
00590     if (v_shared == v) return true;
00591   }
00592 
00593   return false;
00594 }
00595 
00601 int OrderList::GetPositionInSharedOrderList(const Vehicle *v) const
00602 {
00603   int count = 0;
00604   for (const Vehicle *v_shared = v->PreviousShared(); v_shared != NULL; v_shared = v_shared->PreviousShared()) count++;
00605   return count;
00606 }
00607 
00612 bool OrderList::IsCompleteTimetable() const
00613 {
00614   for (Order *o = this->first; o != NULL; o = o->next) {
00615     /* Implicit orders are, by definition, not timetabled. */
00616     if (o->IsType(OT_IMPLICIT)) continue;
00617     if (!o->IsCompletelyTimetabled()) return false;
00618   }
00619   return true;
00620 }
00621 
00625 void OrderList::DebugCheckSanity() const
00626 {
00627   VehicleOrderID check_num_orders = 0;
00628   VehicleOrderID check_num_manual_orders = 0;
00629   uint check_num_vehicles = 0;
00630   Ticks check_timetable_duration = 0;
00631 
00632   DEBUG(misc, 6, "Checking OrderList %hu for sanity...", this->index);
00633 
00634   for (const Order *o = this->first; o != NULL; o = o->next) {
00635     ++check_num_orders;
00636     if (!o->IsType(OT_IMPLICIT)) ++check_num_manual_orders;
00637     check_timetable_duration += o->wait_time + o->travel_time;
00638   }
00639   assert(this->num_orders == check_num_orders);
00640   assert(this->num_manual_orders == check_num_manual_orders);
00641   assert(this->timetable_duration == check_timetable_duration);
00642 
00643   for (const Vehicle *v = this->first_shared; v != NULL; v = v->NextShared()) {
00644     ++check_num_vehicles;
00645     assert(v->orders.list == this);
00646   }
00647   assert(this->num_vehicles == check_num_vehicles);
00648   DEBUG(misc, 6, "... detected %u orders (%u manual), %u vehicles, %i ticks",
00649       (uint)this->num_orders, (uint)this->num_manual_orders,
00650       this->num_vehicles, this->timetable_duration);
00651 }
00652 
00660 static inline bool OrderGoesToStation(const Vehicle *v, const Order *o)
00661 {
00662   return o->IsType(OT_GOTO_STATION) ||
00663       (v->type == VEH_AIRCRAFT && o->IsType(OT_GOTO_DEPOT) && !(o->GetDepotActionType() & ODATFB_NEAREST_DEPOT));
00664 }
00665 
00672 static void DeleteOrderWarnings(const Vehicle *v)
00673 {
00674   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_TOO_FEW_ORDERS);
00675   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_VOID_ORDER);
00676   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_DUPLICATE_ENTRY);
00677   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_INVALID_ENTRY);
00678 }
00679 
00686 TileIndex Order::GetLocation(const Vehicle *v, bool airport) const
00687 {
00688   switch (this->GetType()) {
00689     case OT_GOTO_WAYPOINT:
00690     case OT_GOTO_STATION:
00691     case OT_IMPLICIT:
00692       if (airport && v->type == VEH_AIRCRAFT) return Station::Get(this->GetDestination())->airport.tile;
00693       return BaseStation::Get(this->GetDestination())->xy;
00694 
00695     case OT_GOTO_DEPOT:
00696       if ((this->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0) return INVALID_TILE;
00697       return (v->type == VEH_AIRCRAFT) ? Station::Get(this->GetDestination())->xy : Depot::Get(this->GetDestination())->xy;
00698 
00699     default:
00700       return INVALID_TILE;
00701   }
00702 }
00703 
00713 uint GetOrderDistance(const Order *prev, const Order *cur, const Vehicle *v, int conditional_depth)
00714 {
00715   if (cur->IsType(OT_CONDITIONAL)) {
00716     if (conditional_depth > v->GetNumOrders()) return 0;
00717 
00718     conditional_depth++;
00719 
00720     int dist1 = GetOrderDistance(prev, v->GetOrder(cur->GetConditionSkipToOrder()), v, conditional_depth);
00721     int dist2 = GetOrderDistance(prev, cur->next == NULL ? v->orders.list->GetFirstOrder() : cur->next, v, conditional_depth);
00722     return max(dist1, dist2);
00723   }
00724 
00725   TileIndex prev_tile = prev->GetLocation(v, true);
00726   TileIndex cur_tile = cur->GetLocation(v, true);
00727   if (prev_tile == INVALID_TILE || cur_tile == INVALID_TILE) return 0;
00728   return v->type == VEH_AIRCRAFT ? DistanceSquare(prev_tile, cur_tile) : DistanceManhattan(prev_tile, cur_tile);
00729 }
00730 
00744 CommandCost CmdInsertOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00745 {
00746   VehicleID veh          = GB(p1,  0, 20);
00747   VehicleOrderID sel_ord = GB(p1, 20, 8);
00748   Order new_order(p2);
00749 
00750   Vehicle *v = Vehicle::GetIfValid(veh);
00751   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00752 
00753   CommandCost ret = CheckOwnership(v->owner);
00754   if (ret.Failed()) return ret;
00755 
00756   /* Check if the inserted order is to the correct destination (owner, type),
00757    * and has the correct flags if any */
00758   switch (new_order.GetType()) {
00759     case OT_GOTO_STATION: {
00760       const Station *st = Station::GetIfValid(new_order.GetDestination());
00761       if (st == NULL) return CMD_ERROR;
00762 
00763       if (st->owner != OWNER_NONE) {
00764         CommandCost ret = CheckOwnership(st->owner);
00765         if (ret.Failed()) return ret;
00766       }
00767 
00768       if (!CanVehicleUseStation(v, st)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00769       for (Vehicle *u = v->FirstShared(); u != NULL; u = u->NextShared()) {
00770         if (!CanVehicleUseStation(u, st)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER_SHARED);
00771       }
00772 
00773       /* Non stop only allowed for ground vehicles. */
00774       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && !v->IsGroundVehicle()) return CMD_ERROR;
00775 
00776       /* Filter invalid load/unload types. */
00777       switch (new_order.GetLoadType()) {
00778         case OLF_LOAD_IF_POSSIBLE: case OLFB_FULL_LOAD: case OLF_FULL_LOAD_ANY: case OLFB_NO_LOAD: break;
00779         default: return CMD_ERROR;
00780       }
00781       switch (new_order.GetUnloadType()) {
00782         case OUF_UNLOAD_IF_POSSIBLE: case OUFB_UNLOAD: case OUFB_TRANSFER: case OUFB_NO_UNLOAD: break;
00783         default: return CMD_ERROR;
00784       }
00785 
00786       /* Filter invalid stop locations */
00787       switch (new_order.GetStopLocation()) {
00788         case OSL_PLATFORM_NEAR_END:
00789         case OSL_PLATFORM_MIDDLE:
00790           if (v->type != VEH_TRAIN) return CMD_ERROR;
00791           /* FALL THROUGH */
00792         case OSL_PLATFORM_FAR_END:
00793           break;
00794 
00795         default:
00796           return CMD_ERROR;
00797       }
00798 
00799       break;
00800     }
00801 
00802     case OT_GOTO_DEPOT: {
00803       if ((new_order.GetDepotActionType() & ODATFB_NEAREST_DEPOT) == 0) {
00804         if (v->type == VEH_AIRCRAFT) {
00805           const Station *st = Station::GetIfValid(new_order.GetDestination());
00806 
00807           if (st == NULL) return CMD_ERROR;
00808 
00809           CommandCost ret = CheckOwnership(st->owner);
00810           if (ret.Failed()) return ret;
00811 
00812           if (!CanVehicleUseStation(v, st) || !st->airport.HasHangar()) {
00813             return CMD_ERROR;
00814           }
00815         } else {
00816           const Depot *dp = Depot::GetIfValid(new_order.GetDestination());
00817 
00818           if (dp == NULL) return CMD_ERROR;
00819 
00820           CommandCost ret = CheckOwnership(GetTileOwner(dp->xy));
00821           if (ret.Failed()) return ret;
00822 
00823           switch (v->type) {
00824             case VEH_TRAIN:
00825               if (!IsRailDepotTile(dp->xy)) return CMD_ERROR;
00826               break;
00827 
00828             case VEH_ROAD:
00829               if (!IsRoadDepotTile(dp->xy)) return CMD_ERROR;
00830               break;
00831 
00832             case VEH_SHIP:
00833               if (!IsShipDepotTile(dp->xy)) return CMD_ERROR;
00834               break;
00835 
00836             default: return CMD_ERROR;
00837           }
00838         }
00839       }
00840 
00841       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && !v->IsGroundVehicle()) return CMD_ERROR;
00842       if (new_order.GetDepotOrderType() & ~(ODTFB_PART_OF_ORDERS | ((new_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0 ? ODTFB_SERVICE : 0))) return CMD_ERROR;
00843       if (new_order.GetDepotActionType() & ~(ODATFB_HALT | ODATFB_NEAREST_DEPOT)) return CMD_ERROR;
00844       if ((new_order.GetDepotOrderType() & ODTFB_SERVICE) && (new_order.GetDepotActionType() & ODATFB_HALT)) return CMD_ERROR;
00845       break;
00846     }
00847 
00848     case OT_GOTO_WAYPOINT: {
00849       const Waypoint *wp = Waypoint::GetIfValid(new_order.GetDestination());
00850       if (wp == NULL) return CMD_ERROR;
00851 
00852       switch (v->type) {
00853         default: return CMD_ERROR;
00854 
00855         case VEH_TRAIN: {
00856           if (!(wp->facilities & FACIL_TRAIN)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00857 
00858           CommandCost ret = CheckOwnership(wp->owner);
00859           if (ret.Failed()) return ret;
00860           break;
00861         }
00862 
00863         case VEH_SHIP:
00864           if (!(wp->facilities & FACIL_DOCK)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00865           if (wp->owner != OWNER_NONE) {
00866             CommandCost ret = CheckOwnership(wp->owner);
00867             if (ret.Failed()) return ret;
00868           }
00869           break;
00870       }
00871 
00872       /* Order flags can be any of the following for waypoints:
00873        * [non-stop]
00874        * non-stop orders (if any) are only valid for trains */
00875       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && v->type != VEH_TRAIN) return CMD_ERROR;
00876       break;
00877     }
00878 
00879     case OT_CONDITIONAL: {
00880       VehicleOrderID skip_to = new_order.GetConditionSkipToOrder();
00881       if (skip_to != 0 && skip_to >= v->GetNumOrders()) return CMD_ERROR; // Always allow jumping to the first (even when there is no order).
00882       if (new_order.GetConditionVariable() >= OCV_END) return CMD_ERROR;
00883 
00884       OrderConditionComparator occ = new_order.GetConditionComparator();
00885       if (occ >= OCC_END) return CMD_ERROR;
00886       switch (new_order.GetConditionVariable()) {
00887         case OCV_REQUIRES_SERVICE:
00888           if (occ != OCC_IS_TRUE && occ != OCC_IS_FALSE) return CMD_ERROR;
00889           break;
00890 
00891         case OCV_UNCONDITIONALLY:
00892           if (occ != OCC_EQUALS) return CMD_ERROR;
00893           if (new_order.GetConditionValue() != 0) return CMD_ERROR;
00894           break;
00895 
00896         case OCV_LOAD_PERCENTAGE:
00897         case OCV_RELIABILITY:
00898           if (new_order.GetConditionValue() > 100) return CMD_ERROR;
00899           /* FALL THROUGH */
00900         default:
00901           if (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) return CMD_ERROR;
00902           break;
00903       }
00904       break;
00905     }
00906 
00907     default: return CMD_ERROR;
00908   }
00909 
00910   if (sel_ord > v->GetNumOrders()) return CMD_ERROR;
00911 
00912   if (v->GetNumOrders() >= MAX_VEH_ORDER_ID) return_cmd_error(STR_ERROR_TOO_MANY_ORDERS);
00913   if (!Order::CanAllocateItem()) return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
00914   if (v->orders.list == NULL && !OrderList::CanAllocateItem()) return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
00915 
00916   if (v->type == VEH_SHIP && _settings_game.pf.pathfinder_for_ships != VPF_NPF) {
00917     /* Make sure the new destination is not too far away from the previous */
00918     const Order *prev = NULL;
00919     uint n = 0;
00920 
00921     /* Find the last goto station or depot order before the insert location.
00922      * If the order is to be inserted at the beginning of the order list this
00923      * finds the last order in the list. */
00924     const Order *o;
00925     FOR_VEHICLE_ORDERS(v, o) {
00926       switch (o->GetType()) {
00927         case OT_GOTO_STATION:
00928         case OT_GOTO_DEPOT:
00929         case OT_GOTO_WAYPOINT:
00930           prev = o;
00931           break;
00932 
00933         default: break;
00934       }
00935       if (++n == sel_ord && prev != NULL) break;
00936     }
00937     if (prev != NULL) {
00938       uint dist;
00939       if (new_order.IsType(OT_CONDITIONAL)) {
00940         /* The order is not yet inserted, so we have to do the first iteration here. */
00941         dist = GetOrderDistance(prev, v->GetOrder(new_order.GetConditionSkipToOrder()), v);
00942       } else {
00943         dist = GetOrderDistance(prev, &new_order, v);
00944       }
00945 
00946       if (dist >= 130) {
00947         return_cmd_error(STR_ERROR_TOO_FAR_FROM_PREVIOUS_DESTINATION);
00948       }
00949     }
00950   }
00951 
00952   if (flags & DC_EXEC) {
00953     Order *new_o = new Order();
00954     new_o->AssignOrder(new_order);
00955     InsertOrder(v, new_o, sel_ord);
00956   }
00957 
00958   return CommandCost();
00959 }
00960 
00967 void InsertOrder(Vehicle *v, Order *new_o, VehicleOrderID sel_ord)
00968 {
00969   /* Create new order and link in list */
00970   if (v->orders.list == NULL) {
00971     v->orders.list = new OrderList(new_o, v);
00972   } else {
00973     v->orders.list->InsertOrderAt(new_o, sel_ord);
00974   }
00975 
00976   Vehicle *u = v->FirstShared();
00977   DeleteOrderWarnings(u);
00978   for (; u != NULL; u = u->NextShared()) {
00979     assert(v->orders.list == u->orders.list);
00980 
00981     /* If there is added an order before the current one, we need
00982      * to update the selected order. We do not change implicit/real order indices though.
00983      * If the new order is between the current implicit order and real order, the implicit order will
00984      * later skip the inserted order. */
00985     if (sel_ord <= u->cur_real_order_index) {
00986       uint cur = u->cur_real_order_index + 1;
00987       /* Check if we don't go out of bound */
00988       if (cur < u->GetNumOrders()) {
00989         u->cur_real_order_index = cur;
00990       }
00991     }
00992     if (sel_ord == u->cur_implicit_order_index && u->IsGroundVehicle()) {
00993       /* We are inserting an order just before the current implicit order.
00994        * We do not know whether we will reach current implicit or the newly inserted order first.
00995        * So, disable creation of implicit orders until we are on track again. */
00996       uint16 &gv_flags = u->GetGroundVehicleFlags();
00997       SetBit(gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
00998     }
00999     if (sel_ord <= u->cur_implicit_order_index) {
01000       uint cur = u->cur_implicit_order_index + 1;
01001       /* Check if we don't go out of bound */
01002       if (cur < u->GetNumOrders()) {
01003         u->cur_implicit_order_index = cur;
01004       }
01005     }
01006     /* Update any possible open window of the vehicle */
01007     InvalidateVehicleOrder(u, INVALID_VEH_ORDER_ID | (sel_ord << 8));
01008   }
01009 
01010   /* As we insert an order, the order to skip to will be 'wrong'. */
01011   VehicleOrderID cur_order_id = 0;
01012   Order *order;
01013   FOR_VEHICLE_ORDERS(v, order) {
01014     if (order->IsType(OT_CONDITIONAL)) {
01015       VehicleOrderID order_id = order->GetConditionSkipToOrder();
01016       if (order_id >= sel_ord) {
01017         order->SetConditionSkipToOrder(order_id + 1);
01018       }
01019       if (order_id == cur_order_id) {
01020         order->SetConditionSkipToOrder((order_id + 1) % v->GetNumOrders());
01021       }
01022     }
01023     cur_order_id++;
01024   }
01025 
01026   /* Make sure to rebuild the whole list */
01027   InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01028 }
01029 
01035 static CommandCost DecloneOrder(Vehicle *dst, DoCommandFlag flags)
01036 {
01037   if (flags & DC_EXEC) {
01038     DeleteVehicleOrders(dst);
01039     InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01040     InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01041   }
01042   return CommandCost();
01043 }
01044 
01054 CommandCost CmdDeleteOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01055 {
01056   VehicleID veh_id = GB(p1, 0, 20);
01057   VehicleOrderID sel_ord = GB(p2, 0, 8);
01058 
01059   Vehicle *v = Vehicle::GetIfValid(veh_id);
01060 
01061   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01062 
01063   CommandCost ret = CheckOwnership(v->owner);
01064   if (ret.Failed()) return ret;
01065 
01066   /* If we did not select an order, we maybe want to de-clone the orders */
01067   if (sel_ord >= v->GetNumOrders()) return DecloneOrder(v, flags);
01068 
01069   if (v->GetOrder(sel_ord) == NULL) return CMD_ERROR;
01070 
01071   if (flags & DC_EXEC) DeleteOrder(v, sel_ord);
01072   return CommandCost();
01073 }
01074 
01079 static void CancelLoadingDueToDeletedOrder(Vehicle *v)
01080 {
01081   assert(v->current_order.IsType(OT_LOADING));
01082   /* NON-stop flag is misused to see if a train is in a station that is
01083    * on his order list or not */
01084   v->current_order.SetNonStopType(ONSF_STOP_EVERYWHERE);
01085   /* When full loading, "cancel" that order so the vehicle doesn't
01086    * stay indefinitely at this station anymore. */
01087   if (v->current_order.GetLoadType() & OLFB_FULL_LOAD) v->current_order.SetLoadType(OLF_LOAD_IF_POSSIBLE);
01088 }
01089 
01095 void DeleteOrder(Vehicle *v, VehicleOrderID sel_ord)
01096 {
01097   v->orders.list->DeleteOrderAt(sel_ord);
01098 
01099   Vehicle *u = v->FirstShared();
01100   DeleteOrderWarnings(u);
01101   for (; u != NULL; u = u->NextShared()) {
01102     assert(v->orders.list == u->orders.list);
01103 
01104     if (sel_ord == u->cur_real_order_index && u->current_order.IsType(OT_LOADING)) {
01105       CancelLoadingDueToDeletedOrder(u);
01106     }
01107 
01108     if (sel_ord < u->cur_real_order_index) {
01109       u->cur_real_order_index--;
01110     } else if (sel_ord == u->cur_real_order_index) {
01111       u->UpdateRealOrderIndex();
01112     }
01113 
01114     if (sel_ord < u->cur_implicit_order_index) {
01115       u->cur_implicit_order_index--;
01116     } else if (sel_ord == u->cur_implicit_order_index) {
01117       /* Make sure the index is valid */
01118       if (u->cur_implicit_order_index >= u->GetNumOrders()) u->cur_implicit_order_index = 0;
01119 
01120       /* Skip non-implicit orders for the implicit-order-index (e.g. if the current implicit order was deleted */
01121       while (u->cur_implicit_order_index != u->cur_real_order_index && !u->GetOrder(u->cur_implicit_order_index)->IsType(OT_IMPLICIT)) {
01122         u->cur_implicit_order_index++;
01123         if (u->cur_implicit_order_index >= u->GetNumOrders()) u->cur_implicit_order_index = 0;
01124       }
01125     }
01126 
01127     /* Update any possible open window of the vehicle */
01128     InvalidateVehicleOrder(u, sel_ord | (INVALID_VEH_ORDER_ID << 8));
01129   }
01130 
01131   /* As we delete an order, the order to skip to will be 'wrong'. */
01132   VehicleOrderID cur_order_id = 0;
01133   Order *order = NULL;
01134   FOR_VEHICLE_ORDERS(v, order) {
01135     if (order->IsType(OT_CONDITIONAL)) {
01136       VehicleOrderID order_id = order->GetConditionSkipToOrder();
01137       if (order_id >= sel_ord) {
01138         order_id = max(order_id - 1, 0);
01139       }
01140       if (order_id == cur_order_id) {
01141         order_id = (order_id + 1) % v->GetNumOrders();
01142       }
01143       order->SetConditionSkipToOrder(order_id);
01144     }
01145     cur_order_id++;
01146   }
01147 
01148   InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01149 }
01150 
01160 CommandCost CmdSkipToOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01161 {
01162   VehicleID veh_id = GB(p1, 0, 20);
01163   VehicleOrderID sel_ord = GB(p2, 0, 8);
01164 
01165   Vehicle *v = Vehicle::GetIfValid(veh_id);
01166 
01167   if (v == NULL || !v->IsPrimaryVehicle() || sel_ord == v->cur_implicit_order_index || sel_ord >= v->GetNumOrders() || v->GetNumOrders() < 2) return CMD_ERROR;
01168 
01169   CommandCost ret = CheckOwnership(v->owner);
01170   if (ret.Failed()) return ret;
01171 
01172   if (flags & DC_EXEC) {
01173     if (v->current_order.IsType(OT_LOADING)) v->LeaveStation();
01174 
01175     v->cur_implicit_order_index = v->cur_real_order_index = sel_ord;
01176     v->UpdateRealOrderIndex();
01177 
01178     InvalidateVehicleOrder(v, VIWD_MODIFY_ORDERS);
01179   }
01180 
01181   /* We have an aircraft/ship, they have a mini-schedule, so update them all */
01182   if (v->type == VEH_AIRCRAFT) SetWindowClassesDirty(WC_AIRCRAFT_LIST);
01183   if (v->type == VEH_SHIP) SetWindowClassesDirty(WC_SHIPS_LIST);
01184 
01185   return CommandCost();
01186 }
01187 
01201 CommandCost CmdMoveOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01202 {
01203   VehicleID veh = GB(p1, 0, 20);
01204   VehicleOrderID moving_order = GB(p2,  0, 16);
01205   VehicleOrderID target_order = GB(p2, 16, 16);
01206 
01207   Vehicle *v = Vehicle::GetIfValid(veh);
01208   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01209 
01210   CommandCost ret = CheckOwnership(v->owner);
01211   if (ret.Failed()) return ret;
01212 
01213   /* Don't make senseless movements */
01214   if (moving_order >= v->GetNumOrders() || target_order >= v->GetNumOrders() ||
01215       moving_order == target_order || v->GetNumOrders() <= 1) return CMD_ERROR;
01216 
01217   Order *moving_one = v->GetOrder(moving_order);
01218   /* Don't move an empty order */
01219   if (moving_one == NULL) return CMD_ERROR;
01220 
01221   if (flags & DC_EXEC) {
01222     v->orders.list->MoveOrder(moving_order, target_order);
01223 
01224     /* Update shared list */
01225     Vehicle *u = v->FirstShared();
01226 
01227     DeleteOrderWarnings(u);
01228 
01229     for (; u != NULL; u = u->NextShared()) {
01230       /* Update the current order.
01231        * There are multiple ways to move orders, which result in cur_implicit_order_index
01232        * and cur_real_order_index to not longer make any sense. E.g. moving another
01233        * real order between them.
01234        *
01235        * Basically one could choose to preserve either of them, but not both.
01236        * While both ways are suitable in this or that case from a human point of view, neither
01237        * of them makes really sense.
01238        * However, from an AI point of view, preserving cur_real_order_index is the most
01239        * predictable and transparent behaviour.
01240        *
01241        * With that decision it basically does not matter what we do to cur_implicit_order_index.
01242        * If we change orders between the implicit- and real-index, the implicit orders are mostly likely
01243        * completely out-dated anyway. So, keep it simple and just keep cur_implicit_order_index as well.
01244        * The worst which can happen is that a lot of implicit orders are removed when reaching current_order.
01245        */
01246       if (u->cur_real_order_index == moving_order) {
01247         u->cur_real_order_index = target_order;
01248       } else if (u->cur_real_order_index > moving_order && u->cur_real_order_index <= target_order) {
01249         u->cur_real_order_index--;
01250       } else if (u->cur_real_order_index < moving_order && u->cur_real_order_index >= target_order) {
01251         u->cur_real_order_index++;
01252       }
01253 
01254       if (u->cur_implicit_order_index == moving_order) {
01255         u->cur_implicit_order_index = target_order;
01256       } else if (u->cur_implicit_order_index > moving_order && u->cur_implicit_order_index <= target_order) {
01257         u->cur_implicit_order_index--;
01258       } else if (u->cur_implicit_order_index < moving_order && u->cur_implicit_order_index >= target_order) {
01259         u->cur_implicit_order_index++;
01260       }
01261 
01262       assert(v->orders.list == u->orders.list);
01263       /* Update any possible open window of the vehicle */
01264       InvalidateVehicleOrder(u, moving_order | (target_order << 8));
01265     }
01266 
01267     /* As we move an order, the order to skip to will be 'wrong'. */
01268     Order *order;
01269     FOR_VEHICLE_ORDERS(v, order) {
01270       if (order->IsType(OT_CONDITIONAL)) {
01271         VehicleOrderID order_id = order->GetConditionSkipToOrder();
01272         if (order_id == moving_order) {
01273           order_id = target_order;
01274         } else if (order_id > moving_order && order_id <= target_order) {
01275           order_id--;
01276         } else if (order_id < moving_order && order_id >= target_order) {
01277           order_id++;
01278         }
01279         order->SetConditionSkipToOrder(order_id);
01280       }
01281     }
01282 
01283     /* Make sure to rebuild the whole list */
01284     InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01285   }
01286 
01287   return CommandCost();
01288 }
01289 
01305 CommandCost CmdModifyOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01306 {
01307   VehicleOrderID sel_ord = GB(p1, 20,  8);
01308   VehicleID veh          = GB(p1,  0, 20);
01309   ModifyOrderFlags mof   = Extract<ModifyOrderFlags, 0, 4>(p2);
01310   uint16 data            = GB(p2,  4, 11);
01311 
01312   if (mof >= MOF_END) return CMD_ERROR;
01313 
01314   Vehicle *v = Vehicle::GetIfValid(veh);
01315   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01316 
01317   CommandCost ret = CheckOwnership(v->owner);
01318   if (ret.Failed()) return ret;
01319 
01320   /* Is it a valid order? */
01321   if (sel_ord >= v->GetNumOrders()) return CMD_ERROR;
01322 
01323   Order *order = v->GetOrder(sel_ord);
01324   switch (order->GetType()) {
01325     case OT_GOTO_STATION:
01326       if (mof == MOF_COND_VARIABLE || mof == MOF_COND_COMPARATOR || mof == MOF_DEPOT_ACTION || mof == MOF_COND_VALUE) return CMD_ERROR;
01327       break;
01328 
01329     case OT_GOTO_DEPOT:
01330       if (mof != MOF_NON_STOP && mof != MOF_DEPOT_ACTION) return CMD_ERROR;
01331       break;
01332 
01333     case OT_GOTO_WAYPOINT:
01334       if (mof != MOF_NON_STOP) return CMD_ERROR;
01335       break;
01336 
01337     case OT_CONDITIONAL:
01338       if (mof != MOF_COND_VARIABLE && mof != MOF_COND_COMPARATOR && mof != MOF_COND_VALUE && mof != MOF_COND_DESTINATION) return CMD_ERROR;
01339       break;
01340 
01341     default:
01342       return CMD_ERROR;
01343   }
01344 
01345   switch (mof) {
01346     default: NOT_REACHED();
01347 
01348     case MOF_NON_STOP:
01349       if (!v->IsGroundVehicle()) return CMD_ERROR;
01350       if (data >= ONSF_END) return CMD_ERROR;
01351       if (data == order->GetNonStopType()) return CMD_ERROR;
01352       break;
01353 
01354     case MOF_STOP_LOCATION:
01355       if (v->type != VEH_TRAIN) return CMD_ERROR;
01356       if (data >= OSL_END) return CMD_ERROR;
01357       break;
01358 
01359     case MOF_UNLOAD:
01360       if ((data & ~(OUFB_UNLOAD | OUFB_TRANSFER | OUFB_NO_UNLOAD)) != 0) return CMD_ERROR;
01361       /* Unload and no-unload are mutual exclusive and so are transfer and no unload. */
01362       if (data != 0 && ((data & (OUFB_UNLOAD | OUFB_TRANSFER)) != 0) == ((data & OUFB_NO_UNLOAD) != 0)) return CMD_ERROR;
01363       if (data == order->GetUnloadType()) return CMD_ERROR;
01364       break;
01365 
01366     case MOF_LOAD:
01367       if (data > OLFB_NO_LOAD || data == 1) return CMD_ERROR;
01368       if (data == order->GetLoadType()) return CMD_ERROR;
01369       break;
01370 
01371     case MOF_DEPOT_ACTION:
01372       if (data >= DA_END) return CMD_ERROR;
01373       break;
01374 
01375     case MOF_COND_VARIABLE:
01376       if (data >= OCV_END) return CMD_ERROR;
01377       break;
01378 
01379     case MOF_COND_COMPARATOR:
01380       if (data >= OCC_END) return CMD_ERROR;
01381       switch (order->GetConditionVariable()) {
01382         case OCV_UNCONDITIONALLY: return CMD_ERROR;
01383 
01384         case OCV_REQUIRES_SERVICE:
01385           if (data != OCC_IS_TRUE && data != OCC_IS_FALSE) return CMD_ERROR;
01386           break;
01387 
01388         default:
01389           if (data == OCC_IS_TRUE || data == OCC_IS_FALSE) return CMD_ERROR;
01390           break;
01391       }
01392       break;
01393 
01394     case MOF_COND_VALUE:
01395       switch (order->GetConditionVariable()) {
01396         case OCV_UNCONDITIONALLY: return CMD_ERROR;
01397 
01398         case OCV_LOAD_PERCENTAGE:
01399         case OCV_RELIABILITY:
01400           if (data > 100) return CMD_ERROR;
01401           break;
01402 
01403         default:
01404           if (data > 2047) return CMD_ERROR;
01405           break;
01406       }
01407       break;
01408 
01409     case MOF_COND_DESTINATION:
01410       if (data >= v->GetNumOrders()) return CMD_ERROR;
01411       break;
01412   }
01413 
01414   if (flags & DC_EXEC) {
01415     switch (mof) {
01416       case MOF_NON_STOP:
01417         order->SetNonStopType((OrderNonStopFlags)data);
01418         if (data & ONSF_NO_STOP_AT_DESTINATION_STATION) order->SetRefit(CT_NO_REFIT);
01419         break;
01420 
01421       case MOF_STOP_LOCATION:
01422         order->SetStopLocation((OrderStopLocation)data);
01423         break;
01424 
01425       case MOF_UNLOAD:
01426         order->SetUnloadType((OrderUnloadFlags)data);
01427         break;
01428 
01429       case MOF_LOAD:
01430         order->SetLoadType((OrderLoadFlags)data);
01431         if (data & OLFB_NO_LOAD) order->SetRefit(CT_NO_REFIT);
01432         break;
01433 
01434       case MOF_DEPOT_ACTION: {
01435         switch (data) {
01436           case DA_ALWAYS_GO:
01437             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01438             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01439             break;
01440 
01441           case DA_SERVICE:
01442             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() | ODTFB_SERVICE));
01443             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01444             order->SetRefit(CT_NO_REFIT);
01445             break;
01446 
01447           case DA_STOP:
01448             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01449             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() | ODATFB_HALT));
01450             order->SetRefit(CT_NO_REFIT);
01451             break;
01452 
01453           default:
01454             NOT_REACHED();
01455         }
01456         break;
01457       }
01458 
01459       case MOF_COND_VARIABLE: {
01460         order->SetConditionVariable((OrderConditionVariable)data);
01461 
01462         OrderConditionComparator occ = order->GetConditionComparator();
01463         switch (order->GetConditionVariable()) {
01464           case OCV_UNCONDITIONALLY:
01465             order->SetConditionComparator(OCC_EQUALS);
01466             order->SetConditionValue(0);
01467             break;
01468 
01469           case OCV_REQUIRES_SERVICE:
01470             if (occ != OCC_IS_TRUE && occ != OCC_IS_FALSE) order->SetConditionComparator(OCC_IS_TRUE);
01471             break;
01472 
01473           case OCV_LOAD_PERCENTAGE:
01474           case OCV_RELIABILITY:
01475             if (order->GetConditionValue() > 100) order->SetConditionValue(100);
01476             /* FALL THROUGH */
01477           default:
01478             if (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) order->SetConditionComparator(OCC_EQUALS);
01479             break;
01480         }
01481         break;
01482       }
01483 
01484       case MOF_COND_COMPARATOR:
01485         order->SetConditionComparator((OrderConditionComparator)data);
01486         break;
01487 
01488       case MOF_COND_VALUE:
01489         order->SetConditionValue(data);
01490         break;
01491 
01492       case MOF_COND_DESTINATION:
01493         order->SetConditionSkipToOrder(data);
01494         break;
01495 
01496       default: NOT_REACHED();
01497     }
01498 
01499     /* Update the windows and full load flags, also for vehicles that share the same order list */
01500     Vehicle *u = v->FirstShared();
01501     DeleteOrderWarnings(u);
01502     for (; u != NULL; u = u->NextShared()) {
01503       /* Toggle u->current_order "Full load" flag if it changed.
01504        * However, as the same flag is used for depot orders, check
01505        * whether we are not going to a depot as there are three
01506        * cases where the full load flag can be active and only
01507        * one case where the flag is used for depot orders. In the
01508        * other cases for the OrderTypeByte the flags are not used,
01509        * so do not care and those orders should not be active
01510        * when this function is called.
01511        */
01512       if (sel_ord == u->cur_real_order_index &&
01513           (u->current_order.IsType(OT_GOTO_STATION) || u->current_order.IsType(OT_LOADING)) &&
01514           u->current_order.GetLoadType() != order->GetLoadType()) {
01515         u->current_order.SetLoadType(order->GetLoadType());
01516       }
01517       InvalidateVehicleOrder(u, VIWD_MODIFY_ORDERS);
01518     }
01519   }
01520 
01521   return CommandCost();
01522 }
01523 
01531 static bool CheckAircraftOrderDistance(const Aircraft *v_new, const Vehicle *v_order, const Order *first)
01532 {
01533   if (first == NULL || v_new->acache.cached_max_range == 0) return true;
01534 
01535   /* Iterate over all orders to check the distance between all
01536    * 'goto' orders and their respective next order (of any type). */
01537   for (const Order *o = first; o != NULL; o = o->next) {
01538     switch (o->GetType()) {
01539       case OT_GOTO_STATION:
01540       case OT_GOTO_DEPOT:
01541       case OT_GOTO_WAYPOINT:
01542         /* If we don't have a next order, we've reached the end and must check the first order instead. */
01543         if (GetOrderDistance(o, o->next != NULL ? o->next : first, v_order) > v_new->acache.cached_max_range_sqr) return false;
01544         break;
01545 
01546       default: break;
01547     }
01548   }
01549 
01550   return true;
01551 }
01552 
01564 CommandCost CmdCloneOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01565 {
01566   VehicleID veh_src = GB(p2, 0, 20);
01567   VehicleID veh_dst = GB(p1, 0, 20);
01568 
01569   Vehicle *dst = Vehicle::GetIfValid(veh_dst);
01570   if (dst == NULL || !dst->IsPrimaryVehicle()) return CMD_ERROR;
01571 
01572   CommandCost ret = CheckOwnership(dst->owner);
01573   if (ret.Failed()) return ret;
01574 
01575   switch (GB(p1, 30, 2)) {
01576     case CO_SHARE: {
01577       Vehicle *src = Vehicle::GetIfValid(veh_src);
01578 
01579       /* Sanity checks */
01580       if (src == NULL || !src->IsPrimaryVehicle() || dst->type != src->type || dst == src) return CMD_ERROR;
01581 
01582       CommandCost ret = CheckOwnership(src->owner);
01583       if (ret.Failed()) return ret;
01584 
01585       /* Trucks can't share orders with busses (and visa versa) */
01586       if (src->type == VEH_ROAD && RoadVehicle::From(src)->IsBus() != RoadVehicle::From(dst)->IsBus()) {
01587         return CMD_ERROR;
01588       }
01589 
01590       /* Is the vehicle already in the shared list? */
01591       if (src->FirstShared() == dst->FirstShared()) return CMD_ERROR;
01592 
01593       const Order *order;
01594 
01595       FOR_VEHICLE_ORDERS(src, order) {
01596         if (!OrderGoesToStation(dst, order)) continue;
01597 
01598         /* Allow copying unreachable destinations if they were already unreachable for the source.
01599          * This is basically to allow cloning / autorenewing / autoreplacing vehicles, while the stations
01600          * are temporarily invalid due to reconstruction. */
01601         const Station *st = Station::Get(order->GetDestination());
01602         if (CanVehicleUseStation(src, st) && !CanVehicleUseStation(dst, st)) {
01603           return_cmd_error(STR_ERROR_CAN_T_COPY_SHARE_ORDER);
01604         }
01605       }
01606 
01607       /* Check for aircraft range limits. */
01608       if (dst->type == VEH_AIRCRAFT && !CheckAircraftOrderDistance(Aircraft::From(dst), src, src->GetFirstOrder())) {
01609         return_cmd_error(STR_ERROR_AIRCRAFT_NOT_ENOUGH_RANGE);
01610       }
01611 
01612       if (src->orders.list == NULL && !OrderList::CanAllocateItem()) {
01613         return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01614       }
01615 
01616       if (flags & DC_EXEC) {
01617         /* If the destination vehicle had a OrderList, destroy it.
01618          * We only reset the order indices, if the new orders are obviously different.
01619          * (We mainly do this to keep the order indices valid and in range.) */
01620         DeleteVehicleOrders(dst, false, dst->GetNumOrders() != src->GetNumOrders());
01621 
01622         dst->orders.list = src->orders.list;
01623 
01624         /* Link this vehicle in the shared-list */
01625         dst->AddToShared(src);
01626 
01627         InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01628         InvalidateVehicleOrder(src, VIWD_MODIFY_ORDERS);
01629 
01630         InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01631       }
01632       break;
01633     }
01634 
01635     case CO_COPY: {
01636       Vehicle *src = Vehicle::GetIfValid(veh_src);
01637 
01638       /* Sanity checks */
01639       if (src == NULL || !src->IsPrimaryVehicle() || dst->type != src->type || dst == src) return CMD_ERROR;
01640 
01641       CommandCost ret = CheckOwnership(src->owner);
01642       if (ret.Failed()) return ret;
01643 
01644       /* Trucks can't copy all the orders from busses (and visa versa),
01645        * and neither can helicopters and aircraft. */
01646       const Order *order;
01647       FOR_VEHICLE_ORDERS(src, order) {
01648         if (OrderGoesToStation(dst, order) &&
01649             !CanVehicleUseStation(dst, Station::Get(order->GetDestination()))) {
01650           return_cmd_error(STR_ERROR_CAN_T_COPY_SHARE_ORDER);
01651         }
01652       }
01653 
01654       /* Check for aircraft range limits. */
01655       if (dst->type == VEH_AIRCRAFT && !CheckAircraftOrderDistance(Aircraft::From(dst), src, src->GetFirstOrder())) {
01656         return_cmd_error(STR_ERROR_AIRCRAFT_NOT_ENOUGH_RANGE);
01657       }
01658 
01659       /* make sure there are orders available */
01660       if (!Order::CanAllocateItem(src->GetNumOrders()) || !OrderList::CanAllocateItem()) {
01661         return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01662       }
01663 
01664       if (flags & DC_EXEC) {
01665         const Order *order;
01666         Order *first = NULL;
01667         Order **order_dst;
01668 
01669         /* If the destination vehicle had an order list, destroy the chain but keep the OrderList.
01670          * We only reset the order indices, if the new orders are obviously different.
01671          * (We mainly do this to keep the order indices valid and in range.) */
01672         DeleteVehicleOrders(dst, true, dst->GetNumOrders() != src->GetNumOrders());
01673 
01674         order_dst = &first;
01675         FOR_VEHICLE_ORDERS(src, order) {
01676           *order_dst = new Order();
01677           (*order_dst)->AssignOrder(*order);
01678           order_dst = &(*order_dst)->next;
01679         }
01680         if (dst->orders.list == NULL) {
01681           dst->orders.list = new OrderList(first, dst);
01682         } else {
01683           assert(dst->orders.list->GetFirstOrder() == NULL);
01684           assert(!dst->orders.list->IsShared());
01685           delete dst->orders.list;
01686           assert(OrderList::CanAllocateItem());
01687           dst->orders.list = new OrderList(first, dst);
01688         }
01689 
01690         InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01691 
01692         InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01693       }
01694       break;
01695     }
01696 
01697     case CO_UNSHARE: return DecloneOrder(dst, flags);
01698     default: return CMD_ERROR;
01699   }
01700 
01701   return CommandCost();
01702 }
01703 
01715 CommandCost CmdOrderRefit(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01716 {
01717   VehicleID veh = GB(p1, 0, 20);
01718   VehicleOrderID order_number  = GB(p2, 16, 8);
01719   CargoID cargo = GB(p2, 0, 8);
01720 
01721   if (cargo >= NUM_CARGO && cargo != CT_NO_REFIT && cargo != CT_AUTO_REFIT) return CMD_ERROR;
01722 
01723   const Vehicle *v = Vehicle::GetIfValid(veh);
01724   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01725 
01726   CommandCost ret = CheckOwnership(v->owner);
01727   if (ret.Failed()) return ret;
01728 
01729   Order *order = v->GetOrder(order_number);
01730   if (order == NULL) return CMD_ERROR;
01731 
01732   /* Automatic refit cargo is only supported for goto station orders. */
01733   if (cargo == CT_AUTO_REFIT && !order->IsType(OT_GOTO_STATION)) return CMD_ERROR;
01734 
01735   if (order->GetLoadType() & OLFB_NO_LOAD) return CMD_ERROR;
01736 
01737   if (flags & DC_EXEC) {
01738     order->SetRefit(cargo);
01739 
01740     /* Make the depot order an 'always go' order. */
01741     if (cargo != CT_NO_REFIT && order->IsType(OT_GOTO_DEPOT)) {
01742       order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01743       order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01744     }
01745 
01746     for (Vehicle *u = v->FirstShared(); u != NULL; u = u->NextShared()) {
01747       /* Update any possible open window of the vehicle */
01748       InvalidateVehicleOrder(u, VIWD_MODIFY_ORDERS);
01749 
01750       /* If the vehicle already got the current depot set as current order, then update current order as well */
01751       if (u->cur_real_order_index == order_number && (u->current_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) {
01752         u->current_order.SetRefit(cargo);
01753       }
01754     }
01755   }
01756 
01757   return CommandCost();
01758 }
01759 
01760 
01766 void CheckOrders(const Vehicle *v)
01767 {
01768   /* Does the user wants us to check things? */
01769   if (_settings_client.gui.order_review_system == 0) return;
01770 
01771   /* Do nothing for crashed vehicles */
01772   if (v->vehstatus & VS_CRASHED) return;
01773 
01774   /* Do nothing for stopped vehicles if setting is '1' */
01775   if (_settings_client.gui.order_review_system == 1 && (v->vehstatus & VS_STOPPED)) return;
01776 
01777   /* do nothing we we're not the first vehicle in a share-chain */
01778   if (v->FirstShared() != v) return;
01779 
01780   /* Only check every 20 days, so that we don't flood the message log */
01781   if (v->owner == _local_company && v->day_counter % 20 == 0) {
01782     int n_st, problem_type = -1;
01783     const Order *order;
01784     int message = 0;
01785 
01786     /* Check the order list */
01787     n_st = 0;
01788 
01789     FOR_VEHICLE_ORDERS(v, order) {
01790       /* Dummy order? */
01791       if (order->IsType(OT_DUMMY)) {
01792         problem_type = 1;
01793         break;
01794       }
01795       /* Does station have a load-bay for this vehicle? */
01796       if (order->IsType(OT_GOTO_STATION)) {
01797         const Station *st = Station::Get(order->GetDestination());
01798 
01799         n_st++;
01800         if (!CanVehicleUseStation(v, st)) problem_type = 3;
01801       }
01802     }
01803 
01804     /* Check if the last and the first order are the same */
01805     if (v->GetNumOrders() > 1) {
01806       const Order *last = v->GetLastOrder();
01807 
01808       if (v->orders.list->GetFirstOrder()->Equals(*last)) {
01809         problem_type = 2;
01810       }
01811     }
01812 
01813     /* Do we only have 1 station in our order list? */
01814     if (n_st < 2 && problem_type == -1) problem_type = 0;
01815 
01816 #ifndef NDEBUG
01817     if (v->orders.list != NULL) v->orders.list->DebugCheckSanity();
01818 #endif
01819 
01820     /* We don't have a problem */
01821     if (problem_type < 0) return;
01822 
01823     message = STR_NEWS_VEHICLE_HAS_TOO_FEW_ORDERS + problem_type;
01824     //DEBUG(misc, 3, "Triggered News Item for vehicle %d", v->index);
01825 
01826     SetDParam(0, v->index);
01827     AddVehicleAdviceNewsItem(message, v->index);
01828   }
01829 }
01830 
01836 void RemoveOrderFromAllVehicles(OrderType type, DestinationID destination)
01837 {
01838   Vehicle *v;
01839 
01840   /* Aircraft have StationIDs for depot orders and never use DepotIDs
01841    * This fact is handled specially below
01842    */
01843 
01844   /* Go through all vehicles */
01845   FOR_ALL_VEHICLES(v) {
01846     Order *order;
01847 
01848     order = &v->current_order;
01849     if ((v->type == VEH_AIRCRAFT && order->IsType(OT_GOTO_DEPOT) ? OT_GOTO_STATION : order->GetType()) == type &&
01850         v->current_order.GetDestination() == destination) {
01851       order->MakeDummy();
01852       SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01853     }
01854 
01855     /* Clear the order from the order-list */
01856     int id = -1;
01857     FOR_VEHICLE_ORDERS(v, order) {
01858       id++;
01859 restart:
01860 
01861       OrderType ot = order->GetType();
01862       if (ot == OT_GOTO_DEPOT && (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0) continue;
01863       if (ot == OT_IMPLICIT || (v->type == VEH_AIRCRAFT && ot == OT_GOTO_DEPOT)) ot = OT_GOTO_STATION;
01864       if (ot == type && order->GetDestination() == destination) {
01865         /* We want to clear implicit orders, but we don't want to make them
01866          * dummy orders. They should just vanish. Also check the actual order
01867          * type as ot is currently OT_GOTO_STATION. */
01868         if (order->IsType(OT_IMPLICIT)) {
01869           order = order->next; // DeleteOrder() invalidates current order
01870           DeleteOrder(v, id);
01871           if (order != NULL) goto restart;
01872           break;
01873         }
01874 
01875         order->MakeDummy();
01876         for (const Vehicle *w = v->FirstShared(); w != NULL; w = w->NextShared()) {
01877           /* In GUI, simulate by removing the order and adding it back */
01878           InvalidateVehicleOrder(w, id | (INVALID_VEH_ORDER_ID << 8));
01879           InvalidateVehicleOrder(w, (INVALID_VEH_ORDER_ID << 8) | id);
01880         }
01881       }
01882     }
01883   }
01884 
01885   OrderBackup::RemoveOrder(type, destination);
01886 }
01887 
01892 bool Vehicle::HasDepotOrder() const
01893 {
01894   const Order *order;
01895 
01896   FOR_VEHICLE_ORDERS(this, order) {
01897     if (order->IsType(OT_GOTO_DEPOT)) return true;
01898   }
01899 
01900   return false;
01901 }
01902 
01912 void DeleteVehicleOrders(Vehicle *v, bool keep_orderlist, bool reset_order_indices)
01913 {
01914   DeleteOrderWarnings(v);
01915 
01916   if (v->IsOrderListShared()) {
01917     /* Remove ourself from the shared order list. */
01918     v->RemoveFromShared();
01919     v->orders.list = NULL;
01920   } else if (v->orders.list != NULL) {
01921     /* Remove the orders */
01922     v->orders.list->FreeChain(keep_orderlist);
01923     if (!keep_orderlist) v->orders.list = NULL;
01924   }
01925 
01926   if (reset_order_indices) {
01927     v->cur_implicit_order_index = v->cur_real_order_index = 0;
01928     if (v->current_order.IsType(OT_LOADING)) {
01929       CancelLoadingDueToDeletedOrder(v);
01930     }
01931   }
01932 }
01933 
01941 uint16 GetServiceIntervalClamped(uint interval, bool ispercent)
01942 {
01943   return ispercent ? Clamp(interval, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : Clamp(interval, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
01944 }
01945 
01954 static bool CheckForValidOrders(const Vehicle *v)
01955 {
01956   const Order *order;
01957 
01958   FOR_VEHICLE_ORDERS(v, order) {
01959     switch (order->GetType()) {
01960       case OT_GOTO_STATION:
01961       case OT_GOTO_DEPOT:
01962       case OT_GOTO_WAYPOINT:
01963         return true;
01964 
01965       default:
01966         break;
01967     }
01968   }
01969 
01970   return false;
01971 }
01972 
01976 static bool OrderConditionCompare(OrderConditionComparator occ, int variable, int value)
01977 {
01978   switch (occ) {
01979     case OCC_EQUALS:      return variable == value;
01980     case OCC_NOT_EQUALS:  return variable != value;
01981     case OCC_LESS_THAN:   return variable <  value;
01982     case OCC_LESS_EQUALS: return variable <= value;
01983     case OCC_MORE_THAN:   return variable >  value;
01984     case OCC_MORE_EQUALS: return variable >= value;
01985     case OCC_IS_TRUE:     return variable != 0;
01986     case OCC_IS_FALSE:    return variable == 0;
01987     default: NOT_REACHED();
01988   }
01989 }
01990 
01997 VehicleOrderID ProcessConditionalOrder(const Order *order, const Vehicle *v)
01998 {
01999   if (order->GetType() != OT_CONDITIONAL) return INVALID_VEH_ORDER_ID;
02000 
02001   bool skip_order = false;
02002   OrderConditionComparator occ = order->GetConditionComparator();
02003   uint16 value = order->GetConditionValue();
02004 
02005   switch (order->GetConditionVariable()) {
02006     case OCV_LOAD_PERCENTAGE:    skip_order = OrderConditionCompare(occ, CalcPercentVehicleFilled(v, NULL), value); break;
02007     case OCV_RELIABILITY:        skip_order = OrderConditionCompare(occ, ToPercent16(v->reliability),       value); break;
02008     case OCV_MAX_SPEED:          skip_order = OrderConditionCompare(occ, v->GetDisplayMaxSpeed() * 10 / 16, value); break;
02009     case OCV_AGE:                skip_order = OrderConditionCompare(occ, v->age / DAYS_IN_LEAP_YEAR,        value); break;
02010     case OCV_REQUIRES_SERVICE:   skip_order = OrderConditionCompare(occ, v->NeedsServicing(),               value); break;
02011     case OCV_UNCONDITIONALLY:    skip_order = true; break;
02012     case OCV_REMAINING_LIFETIME: skip_order = OrderConditionCompare(occ, max(v->max_age - v->age + DAYS_IN_LEAP_YEAR - 1, 0) / DAYS_IN_LEAP_YEAR, value); break;
02013     default: NOT_REACHED();
02014   }
02015 
02016   return skip_order ? order->GetConditionSkipToOrder() : (VehicleOrderID)INVALID_VEH_ORDER_ID;
02017 }
02018 
02026 bool UpdateOrderDest(Vehicle *v, const Order *order, int conditional_depth, bool pbs_look_ahead)
02027 {
02028   if (conditional_depth > v->GetNumOrders()) return false;
02029 
02030   switch (order->GetType()) {
02031     case OT_GOTO_STATION:
02032       v->dest_tile = v->GetOrderStationLocation(order->GetDestination());
02033       return true;
02034 
02035     case OT_GOTO_DEPOT:
02036       if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !v->NeedsServicing()) {
02037         assert(!pbs_look_ahead);
02038         UpdateVehicleTimetable(v, true);
02039         v->IncrementRealOrderIndex();
02040         break;
02041       }
02042 
02043       if (v->current_order.GetDepotActionType() & ODATFB_NEAREST_DEPOT) {
02044         /* We need to search for the nearest depot (hangar). */
02045         TileIndex location;
02046         DestinationID destination;
02047         bool reverse;
02048 
02049         if (v->FindClosestDepot(&location, &destination, &reverse)) {
02050           /* PBS reservations cannot reverse */
02051           if (pbs_look_ahead && reverse) return false;
02052 
02053           v->dest_tile = location;
02054           v->current_order.MakeGoToDepot(destination, v->current_order.GetDepotOrderType(), v->current_order.GetNonStopType(), (OrderDepotActionFlags)(v->current_order.GetDepotActionType() & ~ODATFB_NEAREST_DEPOT), v->current_order.GetRefitCargo());
02055 
02056           /* If there is no depot in front, reverse automatically (trains only) */
02057           if (v->type == VEH_TRAIN && reverse) DoCommand(v->tile, v->index, 0, DC_EXEC, CMD_REVERSE_TRAIN_DIRECTION);
02058 
02059           if (v->type == VEH_AIRCRAFT) {
02060             Aircraft *a = Aircraft::From(v);
02061             if (a->state == FLYING && a->targetairport != destination) {
02062               /* The aircraft is now heading for a different hangar than the next in the orders */
02063               extern void AircraftNextAirportPos_and_Order(Aircraft *a);
02064               AircraftNextAirportPos_and_Order(a);
02065             }
02066           }
02067           return true;
02068         }
02069 
02070         /* If there is no depot, we cannot help PBS either. */
02071         if (pbs_look_ahead) return false;
02072 
02073         UpdateVehicleTimetable(v, true);
02074         v->IncrementRealOrderIndex();
02075       } else {
02076         if (v->type != VEH_AIRCRAFT) {
02077           v->dest_tile = Depot::Get(order->GetDestination())->xy;
02078         }
02079         return true;
02080       }
02081       break;
02082 
02083     case OT_GOTO_WAYPOINT:
02084       v->dest_tile = Waypoint::Get(order->GetDestination())->xy;
02085       return true;
02086 
02087     case OT_CONDITIONAL: {
02088       assert(!pbs_look_ahead);
02089       VehicleOrderID next_order = ProcessConditionalOrder(order, v);
02090       if (next_order != INVALID_VEH_ORDER_ID) {
02091         /* Jump to next_order. cur_implicit_order_index becomes exactly that order,
02092          * cur_real_order_index might come after next_order. */
02093         UpdateVehicleTimetable(v, false);
02094         v->cur_implicit_order_index = v->cur_real_order_index = next_order;
02095         v->UpdateRealOrderIndex();
02096         v->current_order_time += v->GetOrder(v->cur_real_order_index)->travel_time;
02097 
02098         /* Disable creation of implicit orders.
02099          * When inserting them we do not know that we would have to make the conditional orders point to them. */
02100         if (v->IsGroundVehicle()) {
02101           uint16 &gv_flags = v->GetGroundVehicleFlags();
02102           SetBit(gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
02103         }
02104       } else {
02105         UpdateVehicleTimetable(v, true);
02106         v->IncrementRealOrderIndex();
02107       }
02108       break;
02109     }
02110 
02111     default:
02112       v->dest_tile = 0;
02113       return false;
02114   }
02115 
02116   assert(v->cur_implicit_order_index < v->GetNumOrders());
02117   assert(v->cur_real_order_index < v->GetNumOrders());
02118 
02119   /* Get the current order */
02120   order = v->GetOrder(v->cur_real_order_index);
02121   if (order != NULL && order->IsType(OT_IMPLICIT)) {
02122     assert(v->GetNumManualOrders() == 0);
02123     order = NULL;
02124   }
02125 
02126   if (order == NULL) {
02127     v->current_order.Free();
02128     v->dest_tile = 0;
02129     return false;
02130   }
02131 
02132   v->current_order = *order;
02133   return UpdateOrderDest(v, order, conditional_depth + 1, pbs_look_ahead);
02134 }
02135 
02143 bool ProcessOrders(Vehicle *v)
02144 {
02145   switch (v->current_order.GetType()) {
02146     case OT_GOTO_DEPOT:
02147       /* Let a depot order in the orderlist interrupt. */
02148       if (!(v->current_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) return false;
02149       break;
02150 
02151     case OT_LOADING:
02152       return false;
02153 
02154     case OT_LEAVESTATION:
02155       if (v->type != VEH_AIRCRAFT) return false;
02156       break;
02157 
02158     default: break;
02159   }
02160 
02168   bool may_reverse = v->current_order.IsType(OT_NOTHING);
02169 
02170   /* Check if we've reached a 'via' destination. */
02171   if (((v->current_order.IsType(OT_GOTO_STATION) && (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION)) || v->current_order.IsType(OT_GOTO_WAYPOINT)) &&
02172       IsTileType(v->tile, MP_STATION) &&
02173       v->current_order.GetDestination() == GetStationIndex(v->tile)) {
02174     v->DeleteUnreachedImplicitOrders();
02175     /* We set the last visited station here because we do not want
02176      * the train to stop at this 'via' station if the next order
02177      * is a no-non-stop order; in that case not setting the last
02178      * visited station will cause the vehicle to still stop. */
02179     v->last_station_visited = v->current_order.GetDestination();
02180     UpdateVehicleTimetable(v, true);
02181     v->IncrementImplicitOrderIndex();
02182   }
02183 
02184   /* Get the current order */
02185   assert(v->cur_implicit_order_index == 0 || v->cur_implicit_order_index < v->GetNumOrders());
02186   v->UpdateRealOrderIndex();
02187 
02188   const Order *order = v->GetOrder(v->cur_real_order_index);
02189   if (order != NULL && order->IsType(OT_IMPLICIT)) {
02190     assert(v->GetNumManualOrders() == 0);
02191     order = NULL;
02192   }
02193 
02194   /* If no order, do nothing. */
02195   if (order == NULL || (v->type == VEH_AIRCRAFT && !CheckForValidOrders(v))) {
02196     if (v->type == VEH_AIRCRAFT) {
02197       /* Aircraft do something vastly different here, so handle separately */
02198       extern void HandleMissingAircraftOrders(Aircraft *v);
02199       HandleMissingAircraftOrders(Aircraft::From(v));
02200       return false;
02201     }
02202 
02203     v->current_order.Free();
02204     v->dest_tile = 0;
02205     return false;
02206   }
02207 
02208   /* If it is unchanged, keep it. */
02209   if (order->Equals(v->current_order) && (v->type == VEH_AIRCRAFT || v->dest_tile != 0) &&
02210       (v->type != VEH_SHIP || !order->IsType(OT_GOTO_STATION) || Station::Get(order->GetDestination())->dock_tile != INVALID_TILE)) {
02211     return false;
02212   }
02213 
02214   /* Otherwise set it, and determine the destination tile. */
02215   v->current_order = *order;
02216 
02217   InvalidateVehicleOrder(v, VIWD_MODIFY_ORDERS);
02218   switch (v->type) {
02219     default:
02220       NOT_REACHED();
02221 
02222     case VEH_ROAD:
02223     case VEH_TRAIN:
02224       break;
02225 
02226     case VEH_AIRCRAFT:
02227     case VEH_SHIP:
02228       SetWindowClassesDirty(GetWindowClassForVehicleType(v->type));
02229       break;
02230   }
02231 
02232   return UpdateOrderDest(v, order) && may_reverse;
02233 }
02234 
02242 bool Order::ShouldStopAtStation(const Vehicle *v, StationID station) const
02243 {
02244   bool is_dest_station = this->IsType(OT_GOTO_STATION) && this->dest == station;
02245 
02246   return (!this->IsType(OT_GOTO_DEPOT) || (this->GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0) &&
02247       v->last_station_visited != station && // Do stop only when we've not just been there
02248       /* Finally do stop when there is no non-stop flag set for this type of station. */
02249       !(this->GetNonStopType() & (is_dest_station ? ONSF_NO_STOP_AT_DESTINATION_STATION : ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS));
02250 }
02251 
02252 bool Order::CanLoadOrUnload() const
02253 {
02254   return (this->IsType(OT_GOTO_STATION) || this->IsType(OT_IMPLICIT)) &&
02255       (this->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) == 0 &&
02256       ((this->GetLoadType() & OLFB_NO_LOAD) == 0 ||
02257       (this->GetUnloadType() & OUFB_NO_UNLOAD) == 0);
02258 }
02259 
02266 bool Order::CanLeaveWithCargo(bool has_cargo) const
02267 {
02268   return (this->GetLoadType() & OLFB_NO_LOAD) == 0 || (has_cargo &&
02269       (this->GetUnloadType() & (OUFB_UNLOAD | OUFB_TRANSFER)) == 0);
02270 }