order_cmd.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "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 
00089 void Order::MakeGoToDepot(DepotID destination, OrderDepotTypeFlags order, OrderNonStopFlags non_stop_type, OrderDepotActionFlags action, CargoID cargo, byte subtype)
00090 {
00091   this->type = OT_GOTO_DEPOT;
00092   this->SetDepotOrderType(order);
00093   this->SetDepotActionType(action);
00094   this->SetNonStopType(non_stop_type);
00095   this->dest = destination;
00096   this->SetRefit(cargo, subtype);
00097 }
00098 
00103 void Order::MakeGoToWaypoint(StationID destination)
00104 {
00105   this->type = OT_GOTO_WAYPOINT;
00106   this->flags = 0;
00107   this->dest = destination;
00108 }
00109 
00114 void Order::MakeLoading(bool ordered)
00115 {
00116   this->type = OT_LOADING;
00117   if (!ordered) this->flags = 0;
00118 }
00119 
00123 void Order::MakeLeaveStation()
00124 {
00125   this->type = OT_LEAVESTATION;
00126   this->flags = 0;
00127 }
00128 
00132 void Order::MakeDummy()
00133 {
00134   this->type = OT_DUMMY;
00135   this->flags = 0;
00136 }
00137 
00142 void Order::MakeConditional(VehicleOrderID order)
00143 {
00144   this->type = OT_CONDITIONAL;
00145   this->flags = order;
00146   this->dest = 0;
00147 }
00148 
00153 void Order::MakeImplicit(StationID destination)
00154 {
00155   this->type = OT_IMPLICIT;
00156   this->dest = destination;
00157 }
00158 
00165 void Order::SetRefit(CargoID cargo, byte subtype)
00166 {
00167   this->refit_cargo = cargo;
00168   this->refit_subtype = subtype;
00169 }
00170 
00176 bool Order::Equals(const Order &other) const
00177 {
00178   /* In case of go to nearest depot orders we need "only" compare the flags
00179    * with the other and not the nearest depot order bit or the actual
00180    * destination because those get clear/filled in during the order
00181    * evaluation. If we do not do this the order will continuously be seen as
00182    * a different order and it will try to find a "nearest depot" every tick. */
00183   if ((this->IsType(OT_GOTO_DEPOT) && this->type == other.type) &&
00184       ((this->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0 ||
00185        (other.GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0)) {
00186     return this->GetDepotOrderType() == other.GetDepotOrderType() &&
00187         (this->GetDepotActionType() & ~ODATFB_NEAREST_DEPOT) == (other.GetDepotActionType() & ~ODATFB_NEAREST_DEPOT);
00188   }
00189 
00190   return this->type == other.type && this->flags == other.flags && this->dest == other.dest;
00191 }
00192 
00199 uint32 Order::Pack() const
00200 {
00201   return this->dest << 16 | this->flags << 8 | this->type;
00202 }
00203 
00209 uint16 Order::MapOldOrder() const
00210 {
00211   uint16 order = this->GetType();
00212   switch (this->type) {
00213     case OT_GOTO_STATION:
00214       if (this->GetUnloadType() & OUFB_UNLOAD) SetBit(order, 5);
00215       if (this->GetLoadType() & OLFB_FULL_LOAD) SetBit(order, 6);
00216       if (this->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS) SetBit(order, 7);
00217       order |= GB(this->GetDestination(), 0, 8) << 8;
00218       break;
00219     case OT_GOTO_DEPOT:
00220       if (!(this->GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) SetBit(order, 6);
00221       SetBit(order, 7);
00222       order |= GB(this->GetDestination(), 0, 8) << 8;
00223       break;
00224     case OT_LOADING:
00225       if (this->GetLoadType() & OLFB_FULL_LOAD) SetBit(order, 6);
00226       break;
00227   }
00228   return order;
00229 }
00230 
00235 Order::Order(uint32 packed)
00236 {
00237   this->type    = (OrderType)GB(packed,  0,  8);
00238   this->flags   = GB(packed,  8,  8);
00239   this->dest    = GB(packed, 16, 16);
00240   this->next    = NULL;
00241   this->refit_cargo   = CT_NO_REFIT;
00242   this->refit_subtype = 0;
00243   this->wait_time     = 0;
00244   this->travel_time   = 0;
00245   this->max_speed     = UINT16_MAX;
00246 }
00247 
00253 void InvalidateVehicleOrder(const Vehicle *v, int data)
00254 {
00255   SetWindowDirty(WC_VEHICLE_VIEW, v->index);
00256 
00257   if (data != 0) {
00258     /* Calls SetDirty() too */
00259     InvalidateWindowData(WC_VEHICLE_ORDERS,    v->index, data);
00260     InvalidateWindowData(WC_VEHICLE_TIMETABLE, v->index, data);
00261     return;
00262   }
00263 
00264   SetWindowDirty(WC_VEHICLE_ORDERS,    v->index);
00265   SetWindowDirty(WC_VEHICLE_TIMETABLE, v->index);
00266 }
00267 
00275 void Order::AssignOrder(const Order &other)
00276 {
00277   this->type  = other.type;
00278   this->flags = other.flags;
00279   this->dest  = other.dest;
00280 
00281   this->refit_cargo   = other.refit_cargo;
00282   this->refit_subtype = other.refit_subtype;
00283 
00284   this->wait_time   = other.wait_time;
00285   this->travel_time = other.travel_time;
00286   this->max_speed   = other.max_speed;
00287 }
00288 
00294 void OrderList::Initialize(Order *chain, Vehicle *v)
00295 {
00296   this->first = chain;
00297   this->first_shared = v;
00298 
00299   this->num_orders = 0;
00300   this->num_manual_orders = 0;
00301   this->num_vehicles = 1;
00302   this->timetable_duration = 0;
00303 
00304   for (Order *o = this->first; o != NULL; o = o->next) {
00305     ++this->num_orders;
00306     if (!o->IsType(OT_IMPLICIT)) ++this->num_manual_orders;
00307     this->timetable_duration += o->wait_time + o->travel_time;
00308   }
00309 
00310   for (Vehicle *u = this->first_shared->PreviousShared(); u != NULL; u = u->PreviousShared()) {
00311     ++this->num_vehicles;
00312     this->first_shared = u;
00313   }
00314 
00315   for (const Vehicle *u = v->NextShared(); u != NULL; u = u->NextShared()) ++this->num_vehicles;
00316 }
00317 
00323 void OrderList::FreeChain(bool keep_orderlist)
00324 {
00325   Order *next;
00326   for (Order *o = this->first; o != NULL; o = next) {
00327     next = o->next;
00328     delete o;
00329   }
00330 
00331   if (keep_orderlist) {
00332     this->first = NULL;
00333     this->num_orders = 0;
00334     this->num_manual_orders = 0;
00335     this->timetable_duration = 0;
00336   } else {
00337     delete this;
00338   }
00339 }
00340 
00346 Order *OrderList::GetOrderAt(int index) const
00347 {
00348   if (index < 0) return NULL;
00349 
00350   Order *order = this->first;
00351 
00352   while (order != NULL && index-- > 0) {
00353     order = order->next;
00354   }
00355   return order;
00356 }
00357 
00367 const Order *OrderList::GetBestLoadableNext(const Vehicle *v, const Order *o2, const Order *o1) const
00368 {
00369   SmallMap<CargoID, uint> capacities;
00370   v->GetConsistFreeCapacities(capacities);
00371   uint loadable1 = 0;
00372   uint loadable2 = 0;
00373   StationID st1 = o1->GetDestination();
00374   StationID st2 = o2->GetDestination();
00375   const Station *cur_station = Station::Get(v->last_station_visited);
00376   for (SmallPair<CargoID, uint> *i = capacities.Begin(); i != capacities.End(); ++i) {
00377     const StationCargoPacketMap *loadable_packets = cur_station->goods[i->first].cargo.Packets();
00378     uint loadable_cargo = 0;
00379     std::pair<StationCargoPacketMap::const_iterator, StationCargoPacketMap::const_iterator> p =
00380         loadable_packets->equal_range(st1);
00381     for (StationCargoPacketMap::const_iterator j = p.first; j != p.second; ++j) {
00382       loadable_cargo = (*j)->Count();
00383     }
00384     loadable1 += min(i->second, loadable_cargo);
00385 
00386     loadable_cargo = 0;
00387     p = loadable_packets->equal_range(st2);
00388     for (StationCargoPacketMap::const_iterator j = p.first; j != p.second; ++j) {
00389       loadable_cargo = (*j)->Count();
00390     }
00391     loadable2 += min(i->second, loadable_cargo);
00392   }
00393   if (loadable1 == loadable2) return RandomRange(2) == 0 ? o1 : o2;
00394   return loadable1 > loadable2 ? o1 : o2;
00395 }
00396 
00408 const Order *OrderList::GetNextStoppingOrder(const Vehicle *v, const Order *next, uint hops, bool is_loading) const
00409 {
00410   if (hops > this->GetNumOrders() || next == NULL) return NULL;
00411 
00412   if (next->IsType(OT_CONDITIONAL)) {
00413     if (is_loading && next->GetConditionVariable() == OCV_LOAD_PERCENTAGE) {
00414       /* If the condition is based on load percentage we can't
00415        * tell what it will do. So we choose randomly. */
00416       const Order *skip_to = this->GetNextStoppingOrder(v,
00417           this->GetOrderAt(next->GetConditionSkipToOrder()),
00418           hops + 1);
00419       const Order *advance = this->GetNextStoppingOrder(v,
00420           this->GetNext(next), hops + 1);
00421       if (advance == NULL) return skip_to;
00422       if (skip_to == NULL) return advance;
00423       return this->GetBestLoadableNext(v, skip_to, advance);
00424     }
00425     /* Otherwise we're optimistic and expect that the
00426      * condition value won't change until it's evaluated. */
00427     VehicleOrderID skip_to = ProcessConditionalOrder(next, v);
00428     if (skip_to != INVALID_VEH_ORDER_ID) {
00429       return this->GetNextStoppingOrder(v, this->GetOrderAt(skip_to),
00430           hops + 1);
00431     }
00432     return this->GetNextStoppingOrder(v, this->GetNext(next), hops + 1);
00433   }
00434 
00435   if (next->IsType(OT_GOTO_DEPOT)) {
00436     if (next->GetDepotActionType() == ODATFB_HALT) return NULL;
00437     if (next->IsRefit()) return next;
00438   }
00439 
00440   if (!next->CanLoadOrUnload()) {
00441     return this->GetNextStoppingOrder(v, this->GetNext(next), hops + 1);
00442   }
00443 
00444   return next;
00445 }
00446 
00454 StationID OrderList::GetNextStoppingStation(const Vehicle *v) const
00455 {
00456 
00457   const Order *next = this->GetOrderAt(v->cur_implicit_order_index);
00458   if (next == NULL) {
00459     next = this->GetFirstOrder();
00460     if (next == NULL) return INVALID_STATION;
00461   } else {
00462     /* GetNext never returns NULL if there is a valid station in the list.
00463      * As the given "next" is already valid and a station in the list, we
00464      * don't have to check for NULL here.
00465      */
00466     next = this->GetNext(next);
00467     assert(next != NULL);
00468   }
00469 
00470   uint hops = 0;
00471   do {
00472     next = this->GetNextStoppingOrder(v, next, ++hops, true);
00473     /* Don't return a next stop if the vehicle has to unload everything. */
00474     if (next == NULL || (next->GetDestination() == v->last_station_visited &&
00475         (next->GetUnloadType() & (OUFB_TRANSFER | OUFB_UNLOAD)) == 0)) {
00476       return INVALID_STATION;
00477     }
00478   } while (next->IsType(OT_GOTO_DEPOT) || next->GetDestination() == v->last_station_visited);
00479 
00480   return next->GetDestination();
00481 }
00482 
00488 void OrderList::InsertOrderAt(Order *new_order, int index)
00489 {
00490   if (this->first == NULL) {
00491     this->first = new_order;
00492   } else {
00493     if (index == 0) {
00494       /* Insert as first or only order */
00495       new_order->next = this->first;
00496       this->first = new_order;
00497     } else if (index >= this->num_orders) {
00498       /* index is after the last order, add it to the end */
00499       this->GetLastOrder()->next = new_order;
00500     } else {
00501       /* Put the new order in between */
00502       Order *order = this->GetOrderAt(index - 1);
00503       new_order->next = order->next;
00504       order->next = new_order;
00505     }
00506   }
00507   ++this->num_orders;
00508   if (!new_order->IsType(OT_IMPLICIT)) ++this->num_manual_orders;
00509   this->timetable_duration += new_order->wait_time + new_order->travel_time;
00510 
00511   /* We can visit oil rigs and buoys that are not our own. They will be shown in
00512    * the list of stations. So, we need to invalidate that window if needed. */
00513   if (new_order->IsType(OT_GOTO_STATION) || new_order->IsType(OT_GOTO_WAYPOINT)) {
00514     BaseStation *bs = BaseStation::Get(new_order->GetDestination());
00515     if (bs->owner == OWNER_NONE) InvalidateWindowClassesData(WC_STATION_LIST, 0);
00516   }
00517 
00518 }
00519 
00520 
00525 void OrderList::DeleteOrderAt(int index)
00526 {
00527   if (index >= this->num_orders) return;
00528 
00529   Order *to_remove;
00530 
00531   if (index == 0) {
00532     to_remove = this->first;
00533     this->first = to_remove->next;
00534   } else {
00535     Order *prev = GetOrderAt(index - 1);
00536     to_remove = prev->next;
00537     prev->next = to_remove->next;
00538   }
00539   --this->num_orders;
00540   if (!to_remove->IsType(OT_IMPLICIT)) --this->num_manual_orders;
00541   this->timetable_duration -= (to_remove->wait_time + to_remove->travel_time);
00542   delete to_remove;
00543 }
00544 
00550 void OrderList::MoveOrder(int from, int to)
00551 {
00552   if (from >= this->num_orders || to >= this->num_orders || from == to) return;
00553 
00554   Order *moving_one;
00555 
00556   /* Take the moving order out of the pointer-chain */
00557   if (from == 0) {
00558     moving_one = this->first;
00559     this->first = moving_one->next;
00560   } else {
00561     Order *one_before = GetOrderAt(from - 1);
00562     moving_one = one_before->next;
00563     one_before->next = moving_one->next;
00564   }
00565 
00566   /* Insert the moving_order again in the pointer-chain */
00567   if (to == 0) {
00568     moving_one->next = this->first;
00569     this->first = moving_one;
00570   } else {
00571     Order *one_before = GetOrderAt(to - 1);
00572     moving_one->next = one_before->next;
00573     one_before->next = moving_one;
00574   }
00575 }
00576 
00582 void OrderList::RemoveVehicle(Vehicle *v)
00583 {
00584   --this->num_vehicles;
00585   if (v == this->first_shared) this->first_shared = v->NextShared();
00586 }
00587 
00592 bool OrderList::IsVehicleInSharedOrdersList(const Vehicle *v) const
00593 {
00594   for (const Vehicle *v_shared = this->first_shared; v_shared != NULL; v_shared = v_shared->NextShared()) {
00595     if (v_shared == v) return true;
00596   }
00597 
00598   return false;
00599 }
00600 
00606 int OrderList::GetPositionInSharedOrderList(const Vehicle *v) const
00607 {
00608   int count = 0;
00609   for (const Vehicle *v_shared = v->PreviousShared(); v_shared != NULL; v_shared = v_shared->PreviousShared()) count++;
00610   return count;
00611 }
00612 
00617 bool OrderList::IsCompleteTimetable() const
00618 {
00619   for (Order *o = this->first; o != NULL; o = o->next) {
00620     /* Implicit orders are, by definition, not timetabled. */
00621     if (o->IsType(OT_IMPLICIT)) continue;
00622     if (!o->IsCompletelyTimetabled()) return false;
00623   }
00624   return true;
00625 }
00626 
00630 void OrderList::DebugCheckSanity() const
00631 {
00632   VehicleOrderID check_num_orders = 0;
00633   VehicleOrderID check_num_manual_orders = 0;
00634   uint check_num_vehicles = 0;
00635   Ticks check_timetable_duration = 0;
00636 
00637   DEBUG(misc, 6, "Checking OrderList %hu for sanity...", this->index);
00638 
00639   for (const Order *o = this->first; o != NULL; o = o->next) {
00640     ++check_num_orders;
00641     if (!o->IsType(OT_IMPLICIT)) ++check_num_manual_orders;
00642     check_timetable_duration += o->wait_time + o->travel_time;
00643   }
00644   assert(this->num_orders == check_num_orders);
00645   assert(this->num_manual_orders == check_num_manual_orders);
00646   assert(this->timetable_duration == check_timetable_duration);
00647 
00648   for (const Vehicle *v = this->first_shared; v != NULL; v = v->NextShared()) {
00649     ++check_num_vehicles;
00650     assert(v->orders.list == this);
00651   }
00652   assert(this->num_vehicles == check_num_vehicles);
00653   DEBUG(misc, 6, "... detected %u orders (%u manual), %u vehicles, %i ticks",
00654       (uint)this->num_orders, (uint)this->num_manual_orders,
00655       this->num_vehicles, this->timetable_duration);
00656 }
00657 
00665 static inline bool OrderGoesToStation(const Vehicle *v, const Order *o)
00666 {
00667   return o->IsType(OT_GOTO_STATION) ||
00668       (v->type == VEH_AIRCRAFT && o->IsType(OT_GOTO_DEPOT) && !(o->GetDepotActionType() & ODATFB_NEAREST_DEPOT));
00669 }
00670 
00677 static void DeleteOrderWarnings(const Vehicle *v)
00678 {
00679   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_TOO_FEW_ORDERS);
00680   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_VOID_ORDER);
00681   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_DUPLICATE_ENTRY);
00682   DeleteVehicleNews(v->index, STR_NEWS_VEHICLE_HAS_INVALID_ENTRY);
00683 }
00684 
00691 TileIndex Order::GetLocation(const Vehicle *v, bool airport) const
00692 {
00693   switch (this->GetType()) {
00694     case OT_GOTO_WAYPOINT:
00695     case OT_GOTO_STATION:
00696     case OT_IMPLICIT:
00697       if (airport && v->type == VEH_AIRCRAFT) return Station::Get(this->GetDestination())->airport.tile;
00698       return BaseStation::Get(this->GetDestination())->xy;
00699 
00700     case OT_GOTO_DEPOT:
00701       if ((this->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0) return INVALID_TILE;
00702       return (v->type == VEH_AIRCRAFT) ? Station::Get(this->GetDestination())->xy : Depot::Get(this->GetDestination())->xy;
00703 
00704     default:
00705       return INVALID_TILE;
00706   }
00707 }
00708 
00718 uint GetOrderDistance(const Order *prev, const Order *cur, const Vehicle *v, int conditional_depth)
00719 {
00720   if (cur->IsType(OT_CONDITIONAL)) {
00721     if (conditional_depth > v->GetNumOrders()) return 0;
00722 
00723     conditional_depth++;
00724 
00725     int dist1 = GetOrderDistance(prev, v->GetOrder(cur->GetConditionSkipToOrder()), v, conditional_depth);
00726     int dist2 = GetOrderDistance(prev, cur->next == NULL ? v->orders.list->GetFirstOrder() : cur->next, v, conditional_depth);
00727     return max(dist1, dist2);
00728   }
00729 
00730   TileIndex prev_tile = prev->GetLocation(v, true);
00731   TileIndex cur_tile = cur->GetLocation(v, true);
00732   if (prev_tile == INVALID_TILE || cur_tile == INVALID_TILE) return 0;
00733   return v->type == VEH_AIRCRAFT ? DistanceSquare(prev_tile, cur_tile) : DistanceManhattan(prev_tile, cur_tile);
00734 }
00735 
00749 CommandCost CmdInsertOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00750 {
00751   VehicleID veh          = GB(p1,  0, 20);
00752   VehicleOrderID sel_ord = GB(p1, 20, 8);
00753   Order new_order(p2);
00754 
00755   Vehicle *v = Vehicle::GetIfValid(veh);
00756   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
00757 
00758   CommandCost ret = CheckOwnership(v->owner);
00759   if (ret.Failed()) return ret;
00760 
00761   /* Check if the inserted order is to the correct destination (owner, type),
00762    * and has the correct flags if any */
00763   switch (new_order.GetType()) {
00764     case OT_GOTO_STATION: {
00765       const Station *st = Station::GetIfValid(new_order.GetDestination());
00766       if (st == NULL) return CMD_ERROR;
00767 
00768       if (st->owner != OWNER_NONE) {
00769         CommandCost ret = CheckOwnership(st->owner);
00770         if (ret.Failed()) return ret;
00771       }
00772 
00773       if (!CanVehicleUseStation(v, st)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00774       for (Vehicle *u = v->FirstShared(); u != NULL; u = u->NextShared()) {
00775         if (!CanVehicleUseStation(u, st)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER_SHARED);
00776       }
00777 
00778       /* Non stop only allowed for ground vehicles. */
00779       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && !v->IsGroundVehicle()) return CMD_ERROR;
00780 
00781       /* Filter invalid load/unload types. */
00782       switch (new_order.GetLoadType()) {
00783         case OLF_LOAD_IF_POSSIBLE: case OLFB_FULL_LOAD: case OLF_FULL_LOAD_ANY: case OLFB_NO_LOAD: break;
00784         default: return CMD_ERROR;
00785       }
00786       switch (new_order.GetUnloadType()) {
00787         case OUF_UNLOAD_IF_POSSIBLE: case OUFB_UNLOAD: case OUFB_TRANSFER: case OUFB_NO_UNLOAD: break;
00788         default: return CMD_ERROR;
00789       }
00790 
00791       /* Filter invalid stop locations */
00792       switch (new_order.GetStopLocation()) {
00793         case OSL_PLATFORM_NEAR_END:
00794         case OSL_PLATFORM_MIDDLE:
00795           if (v->type != VEH_TRAIN) return CMD_ERROR;
00796           /* FALL THROUGH */
00797         case OSL_PLATFORM_FAR_END:
00798           break;
00799 
00800         default:
00801           return CMD_ERROR;
00802       }
00803 
00804       break;
00805     }
00806 
00807     case OT_GOTO_DEPOT: {
00808       if ((new_order.GetDepotActionType() & ODATFB_NEAREST_DEPOT) == 0) {
00809         if (v->type == VEH_AIRCRAFT) {
00810           const Station *st = Station::GetIfValid(new_order.GetDestination());
00811 
00812           if (st == NULL) return CMD_ERROR;
00813 
00814           CommandCost ret = CheckOwnership(st->owner);
00815           if (ret.Failed()) return ret;
00816 
00817           if (!CanVehicleUseStation(v, st) || !st->airport.HasHangar()) {
00818             return CMD_ERROR;
00819           }
00820         } else {
00821           const Depot *dp = Depot::GetIfValid(new_order.GetDestination());
00822 
00823           if (dp == NULL) return CMD_ERROR;
00824 
00825           CommandCost ret = CheckOwnership(GetTileOwner(dp->xy));
00826           if (ret.Failed()) return ret;
00827 
00828           switch (v->type) {
00829             case VEH_TRAIN:
00830               if (!IsRailDepotTile(dp->xy)) return CMD_ERROR;
00831               break;
00832 
00833             case VEH_ROAD:
00834               if (!IsRoadDepotTile(dp->xy)) return CMD_ERROR;
00835               break;
00836 
00837             case VEH_SHIP:
00838               if (!IsShipDepotTile(dp->xy)) return CMD_ERROR;
00839               break;
00840 
00841             default: return CMD_ERROR;
00842           }
00843         }
00844       }
00845 
00846       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && !v->IsGroundVehicle()) return CMD_ERROR;
00847       if (new_order.GetDepotOrderType() & ~(ODTFB_PART_OF_ORDERS | ((new_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0 ? ODTFB_SERVICE : 0))) return CMD_ERROR;
00848       if (new_order.GetDepotActionType() & ~(ODATFB_HALT | ODATFB_NEAREST_DEPOT)) return CMD_ERROR;
00849       if ((new_order.GetDepotOrderType() & ODTFB_SERVICE) && (new_order.GetDepotActionType() & ODATFB_HALT)) return CMD_ERROR;
00850       break;
00851     }
00852 
00853     case OT_GOTO_WAYPOINT: {
00854       const Waypoint *wp = Waypoint::GetIfValid(new_order.GetDestination());
00855       if (wp == NULL) return CMD_ERROR;
00856 
00857       switch (v->type) {
00858         default: return CMD_ERROR;
00859 
00860         case VEH_TRAIN: {
00861           if (!(wp->facilities & FACIL_TRAIN)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00862 
00863           CommandCost ret = CheckOwnership(wp->owner);
00864           if (ret.Failed()) return ret;
00865           break;
00866         }
00867 
00868         case VEH_SHIP:
00869           if (!(wp->facilities & FACIL_DOCK)) return_cmd_error(STR_ERROR_CAN_T_ADD_ORDER);
00870           if (wp->owner != OWNER_NONE) {
00871             CommandCost ret = CheckOwnership(wp->owner);
00872             if (ret.Failed()) return ret;
00873           }
00874           break;
00875       }
00876 
00877       /* Order flags can be any of the following for waypoints:
00878        * [non-stop]
00879        * non-stop orders (if any) are only valid for trains */
00880       if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && v->type != VEH_TRAIN) return CMD_ERROR;
00881       break;
00882     }
00883 
00884     case OT_CONDITIONAL: {
00885       VehicleOrderID skip_to = new_order.GetConditionSkipToOrder();
00886       if (skip_to != 0 && skip_to >= v->GetNumOrders()) return CMD_ERROR; // Always allow jumping to the first (even when there is no order).
00887       if (new_order.GetConditionVariable() >= OCV_END) return CMD_ERROR;
00888 
00889       OrderConditionComparator occ = new_order.GetConditionComparator();
00890       if (occ >= OCC_END) return CMD_ERROR;
00891       switch (new_order.GetConditionVariable()) {
00892         case OCV_REQUIRES_SERVICE:
00893           if (occ != OCC_IS_TRUE && occ != OCC_IS_FALSE) return CMD_ERROR;
00894           break;
00895 
00896         case OCV_UNCONDITIONALLY:
00897           if (occ != OCC_EQUALS) return CMD_ERROR;
00898           if (new_order.GetConditionValue() != 0) return CMD_ERROR;
00899           break;
00900 
00901         case OCV_LOAD_PERCENTAGE:
00902         case OCV_RELIABILITY:
00903           if (new_order.GetConditionValue() > 100) return CMD_ERROR;
00904           /* FALL THROUGH */
00905         default:
00906           if (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) return CMD_ERROR;
00907           break;
00908       }
00909       break;
00910     }
00911 
00912     default: return CMD_ERROR;
00913   }
00914 
00915   if (sel_ord > v->GetNumOrders()) return CMD_ERROR;
00916 
00917   if (v->GetNumOrders() >= MAX_VEH_ORDER_ID) return_cmd_error(STR_ERROR_TOO_MANY_ORDERS);
00918   if (!Order::CanAllocateItem()) return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
00919   if (v->orders.list == NULL && !OrderList::CanAllocateItem()) return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
00920 
00921   if (v->type == VEH_SHIP && _settings_game.pf.pathfinder_for_ships != VPF_NPF) {
00922     /* Make sure the new destination is not too far away from the previous */
00923     const Order *prev = NULL;
00924     uint n = 0;
00925 
00926     /* Find the last goto station or depot order before the insert location.
00927      * If the order is to be inserted at the beginning of the order list this
00928      * finds the last order in the list. */
00929     const Order *o;
00930     FOR_VEHICLE_ORDERS(v, o) {
00931       switch (o->GetType()) {
00932         case OT_GOTO_STATION:
00933         case OT_GOTO_DEPOT:
00934         case OT_GOTO_WAYPOINT:
00935           prev = o;
00936           break;
00937 
00938         default: break;
00939       }
00940       if (++n == sel_ord && prev != NULL) break;
00941     }
00942     if (prev != NULL) {
00943       uint dist;
00944       if (new_order.IsType(OT_CONDITIONAL)) {
00945         /* The order is not yet inserted, so we have to do the first iteration here. */
00946         dist = GetOrderDistance(prev, v->GetOrder(new_order.GetConditionSkipToOrder()), v);
00947       } else {
00948         dist = GetOrderDistance(prev, &new_order, v);
00949       }
00950 
00951       if (dist >= 130) {
00952         return_cmd_error(STR_ERROR_TOO_FAR_FROM_PREVIOUS_DESTINATION);
00953       }
00954     }
00955   }
00956 
00957   if (flags & DC_EXEC) {
00958     Order *new_o = new Order();
00959     new_o->AssignOrder(new_order);
00960     InsertOrder(v, new_o, sel_ord);
00961   }
00962 
00963   return CommandCost();
00964 }
00965 
00972 void InsertOrder(Vehicle *v, Order *new_o, VehicleOrderID sel_ord)
00973 {
00974   /* Create new order and link in list */
00975   if (v->orders.list == NULL) {
00976     v->orders.list = new OrderList(new_o, v);
00977   } else {
00978     v->orders.list->InsertOrderAt(new_o, sel_ord);
00979   }
00980 
00981   Vehicle *u = v->FirstShared();
00982   DeleteOrderWarnings(u);
00983   for (; u != NULL; u = u->NextShared()) {
00984     assert(v->orders.list == u->orders.list);
00985 
00986     /* If there is added an order before the current one, we need
00987      * to update the selected order. We do not change implicit/real order indices though.
00988      * If the new order is between the current implicit order and real order, the implicit order will
00989      * later skip the inserted order. */
00990     if (sel_ord <= u->cur_real_order_index) {
00991       uint cur = u->cur_real_order_index + 1;
00992       /* Check if we don't go out of bound */
00993       if (cur < u->GetNumOrders()) {
00994         u->cur_real_order_index = cur;
00995       }
00996     }
00997     if (sel_ord == u->cur_implicit_order_index && u->IsGroundVehicle()) {
00998       /* We are inserting an order just before the current implicit order.
00999        * We do not know whether we will reach current implicit or the newly inserted order first.
01000        * So, disable creation of implicit orders until we are on track again. */
01001       uint16 &gv_flags = u->GetGroundVehicleFlags();
01002       SetBit(gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
01003     }
01004     if (sel_ord <= u->cur_implicit_order_index) {
01005       uint cur = u->cur_implicit_order_index + 1;
01006       /* Check if we don't go out of bound */
01007       if (cur < u->GetNumOrders()) {
01008         u->cur_implicit_order_index = cur;
01009       }
01010     }
01011     /* Update any possible open window of the vehicle */
01012     InvalidateVehicleOrder(u, INVALID_VEH_ORDER_ID | (sel_ord << 8));
01013   }
01014 
01015   /* As we insert an order, the order to skip to will be 'wrong'. */
01016   VehicleOrderID cur_order_id = 0;
01017   Order *order;
01018   FOR_VEHICLE_ORDERS(v, order) {
01019     if (order->IsType(OT_CONDITIONAL)) {
01020       VehicleOrderID order_id = order->GetConditionSkipToOrder();
01021       if (order_id >= sel_ord) {
01022         order->SetConditionSkipToOrder(order_id + 1);
01023       }
01024       if (order_id == cur_order_id) {
01025         order->SetConditionSkipToOrder((order_id + 1) % v->GetNumOrders());
01026       }
01027     }
01028     cur_order_id++;
01029   }
01030 
01031   /* Make sure to rebuild the whole list */
01032   InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01033 }
01034 
01040 static CommandCost DecloneOrder(Vehicle *dst, DoCommandFlag flags)
01041 {
01042   if (flags & DC_EXEC) {
01043     DeleteVehicleOrders(dst);
01044     InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01045     InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01046   }
01047   return CommandCost();
01048 }
01049 
01059 CommandCost CmdDeleteOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01060 {
01061   VehicleID veh_id = GB(p1, 0, 20);
01062   VehicleOrderID sel_ord = GB(p2, 0, 8);
01063 
01064   Vehicle *v = Vehicle::GetIfValid(veh_id);
01065 
01066   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01067 
01068   CommandCost ret = CheckOwnership(v->owner);
01069   if (ret.Failed()) return ret;
01070 
01071   /* If we did not select an order, we maybe want to de-clone the orders */
01072   if (sel_ord >= v->GetNumOrders()) return DecloneOrder(v, flags);
01073 
01074   if (v->GetOrder(sel_ord) == NULL) return CMD_ERROR;
01075 
01076   if (flags & DC_EXEC) DeleteOrder(v, sel_ord);
01077   return CommandCost();
01078 }
01079 
01084 static void CancelLoadingDueToDeletedOrder(Vehicle *v)
01085 {
01086   assert(v->current_order.IsType(OT_LOADING));
01087   /* NON-stop flag is misused to see if a train is in a station that is
01088    * on his order list or not */
01089   v->current_order.SetNonStopType(ONSF_STOP_EVERYWHERE);
01090   /* When full loading, "cancel" that order so the vehicle doesn't
01091    * stay indefinitely at this station anymore. */
01092   if (v->current_order.GetLoadType() & OLFB_FULL_LOAD) v->current_order.SetLoadType(OLF_LOAD_IF_POSSIBLE);
01093 }
01094 
01100 void DeleteOrder(Vehicle *v, VehicleOrderID sel_ord)
01101 {
01102   v->orders.list->DeleteOrderAt(sel_ord);
01103 
01104   Vehicle *u = v->FirstShared();
01105   DeleteOrderWarnings(u);
01106   for (; u != NULL; u = u->NextShared()) {
01107     assert(v->orders.list == u->orders.list);
01108 
01109     if (sel_ord == u->cur_real_order_index && u->current_order.IsType(OT_LOADING)) {
01110       CancelLoadingDueToDeletedOrder(u);
01111     }
01112 
01113     if (sel_ord < u->cur_real_order_index) {
01114       u->cur_real_order_index--;
01115     } else if (sel_ord == u->cur_real_order_index) {
01116       u->UpdateRealOrderIndex();
01117     }
01118 
01119     if (sel_ord < u->cur_implicit_order_index) {
01120       u->cur_implicit_order_index--;
01121     } else if (sel_ord == u->cur_implicit_order_index) {
01122       /* Make sure the index is valid */
01123       if (u->cur_implicit_order_index >= u->GetNumOrders()) u->cur_implicit_order_index = 0;
01124 
01125       /* Skip non-implicit orders for the implicit-order-index (e.g. if the current implicit order was deleted */
01126       while (u->cur_implicit_order_index != u->cur_real_order_index && !u->GetOrder(u->cur_implicit_order_index)->IsType(OT_IMPLICIT)) {
01127         u->cur_implicit_order_index++;
01128         if (u->cur_implicit_order_index >= u->GetNumOrders()) u->cur_implicit_order_index = 0;
01129       }
01130     }
01131 
01132     /* Update any possible open window of the vehicle */
01133     InvalidateVehicleOrder(u, sel_ord | (INVALID_VEH_ORDER_ID << 8));
01134   }
01135 
01136   /* As we delete an order, the order to skip to will be 'wrong'. */
01137   VehicleOrderID cur_order_id = 0;
01138   Order *order = NULL;
01139   FOR_VEHICLE_ORDERS(v, order) {
01140     if (order->IsType(OT_CONDITIONAL)) {
01141       VehicleOrderID order_id = order->GetConditionSkipToOrder();
01142       if (order_id >= sel_ord) {
01143         order_id = max(order_id - 1, 0);
01144       }
01145       if (order_id == cur_order_id) {
01146         order_id = (order_id + 1) % v->GetNumOrders();
01147       }
01148       order->SetConditionSkipToOrder(order_id);
01149     }
01150     cur_order_id++;
01151   }
01152 
01153   InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01154 }
01155 
01165 CommandCost CmdSkipToOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01166 {
01167   VehicleID veh_id = GB(p1, 0, 20);
01168   VehicleOrderID sel_ord = GB(p2, 0, 8);
01169 
01170   Vehicle *v = Vehicle::GetIfValid(veh_id);
01171 
01172   if (v == NULL || !v->IsPrimaryVehicle() || sel_ord == v->cur_implicit_order_index || sel_ord >= v->GetNumOrders() || v->GetNumOrders() < 2) return CMD_ERROR;
01173 
01174   CommandCost ret = CheckOwnership(v->owner);
01175   if (ret.Failed()) return ret;
01176 
01177   if (flags & DC_EXEC) {
01178     if (v->current_order.IsType(OT_LOADING)) v->LeaveStation();
01179 
01180     v->cur_implicit_order_index = v->cur_real_order_index = sel_ord;
01181     v->UpdateRealOrderIndex();
01182 
01183     InvalidateVehicleOrder(v, VIWD_MODIFY_ORDERS);
01184   }
01185 
01186   /* We have an aircraft/ship, they have a mini-schedule, so update them all */
01187   if (v->type == VEH_AIRCRAFT) SetWindowClassesDirty(WC_AIRCRAFT_LIST);
01188   if (v->type == VEH_SHIP) SetWindowClassesDirty(WC_SHIPS_LIST);
01189 
01190   return CommandCost();
01191 }
01192 
01206 CommandCost CmdMoveOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01207 {
01208   VehicleID veh = GB(p1, 0, 20);
01209   VehicleOrderID moving_order = GB(p2,  0, 16);
01210   VehicleOrderID target_order = GB(p2, 16, 16);
01211 
01212   Vehicle *v = Vehicle::GetIfValid(veh);
01213   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01214 
01215   CommandCost ret = CheckOwnership(v->owner);
01216   if (ret.Failed()) return ret;
01217 
01218   /* Don't make senseless movements */
01219   if (moving_order >= v->GetNumOrders() || target_order >= v->GetNumOrders() ||
01220       moving_order == target_order || v->GetNumOrders() <= 1) return CMD_ERROR;
01221 
01222   Order *moving_one = v->GetOrder(moving_order);
01223   /* Don't move an empty order */
01224   if (moving_one == NULL) return CMD_ERROR;
01225 
01226   if (flags & DC_EXEC) {
01227     v->orders.list->MoveOrder(moving_order, target_order);
01228 
01229     /* Update shared list */
01230     Vehicle *u = v->FirstShared();
01231 
01232     DeleteOrderWarnings(u);
01233 
01234     for (; u != NULL; u = u->NextShared()) {
01235       /* Update the current order.
01236        * There are multiple ways to move orders, which result in cur_implicit_order_index
01237        * and cur_real_order_index to not longer make any sense. E.g. moving another
01238        * real order between them.
01239        *
01240        * Basically one could choose to preserve either of them, but not both.
01241        * While both ways are suitable in this or that case from a human point of view, neither
01242        * of them makes really sense.
01243        * However, from an AI point of view, preserving cur_real_order_index is the most
01244        * predictable and transparent behaviour.
01245        *
01246        * With that decision it basically does not matter what we do to cur_implicit_order_index.
01247        * If we change orders between the implict- and real-index, the implicit orders are mostly likely
01248        * completely out-dated anyway. So, keep it simple and just keep cur_implicit_order_index as well.
01249        * The worst which can happen is that a lot of implicit orders are removed when reaching current_order.
01250        */
01251       if (u->cur_real_order_index == moving_order) {
01252         u->cur_real_order_index = target_order;
01253       } else if (u->cur_real_order_index > moving_order && u->cur_real_order_index <= target_order) {
01254         u->cur_real_order_index--;
01255       } else if (u->cur_real_order_index < moving_order && u->cur_real_order_index >= target_order) {
01256         u->cur_real_order_index++;
01257       }
01258 
01259       if (u->cur_implicit_order_index == moving_order) {
01260         u->cur_implicit_order_index = target_order;
01261       } else if (u->cur_implicit_order_index > moving_order && u->cur_implicit_order_index <= target_order) {
01262         u->cur_implicit_order_index--;
01263       } else if (u->cur_implicit_order_index < moving_order && u->cur_implicit_order_index >= target_order) {
01264         u->cur_implicit_order_index++;
01265       }
01266 
01267       assert(v->orders.list == u->orders.list);
01268       /* Update any possible open window of the vehicle */
01269       InvalidateVehicleOrder(u, moving_order | (target_order << 8));
01270     }
01271 
01272     /* As we move an order, the order to skip to will be 'wrong'. */
01273     Order *order;
01274     FOR_VEHICLE_ORDERS(v, order) {
01275       if (order->IsType(OT_CONDITIONAL)) {
01276         VehicleOrderID order_id = order->GetConditionSkipToOrder();
01277         if (order_id == moving_order) {
01278           order_id = target_order;
01279         } else if (order_id > moving_order && order_id <= target_order) {
01280           order_id--;
01281         } else if (order_id < moving_order && order_id >= target_order) {
01282           order_id++;
01283         }
01284         order->SetConditionSkipToOrder(order_id);
01285       }
01286     }
01287 
01288     /* Make sure to rebuild the whole list */
01289     InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
01290   }
01291 
01292   return CommandCost();
01293 }
01294 
01310 CommandCost CmdModifyOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01311 {
01312   VehicleOrderID sel_ord = GB(p1, 20,  8);
01313   VehicleID veh          = GB(p1,  0, 20);
01314   ModifyOrderFlags mof   = Extract<ModifyOrderFlags, 0, 4>(p2);
01315   uint16 data            = GB(p2,  4, 11);
01316 
01317   if (mof >= MOF_END) return CMD_ERROR;
01318 
01319   Vehicle *v = Vehicle::GetIfValid(veh);
01320   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01321 
01322   CommandCost ret = CheckOwnership(v->owner);
01323   if (ret.Failed()) return ret;
01324 
01325   /* Is it a valid order? */
01326   if (sel_ord >= v->GetNumOrders()) return CMD_ERROR;
01327 
01328   Order *order = v->GetOrder(sel_ord);
01329   switch (order->GetType()) {
01330     case OT_GOTO_STATION:
01331       if (mof == MOF_COND_VARIABLE || mof == MOF_COND_COMPARATOR || mof == MOF_DEPOT_ACTION || mof == MOF_COND_VALUE) return CMD_ERROR;
01332       break;
01333 
01334     case OT_GOTO_DEPOT:
01335       if (mof != MOF_NON_STOP && mof != MOF_DEPOT_ACTION) return CMD_ERROR;
01336       break;
01337 
01338     case OT_GOTO_WAYPOINT:
01339       if (mof != MOF_NON_STOP) return CMD_ERROR;
01340       break;
01341 
01342     case OT_CONDITIONAL:
01343       if (mof != MOF_COND_VARIABLE && mof != MOF_COND_COMPARATOR && mof != MOF_COND_VALUE && mof != MOF_COND_DESTINATION) return CMD_ERROR;
01344       break;
01345 
01346     default:
01347       return CMD_ERROR;
01348   }
01349 
01350   switch (mof) {
01351     default: NOT_REACHED();
01352 
01353     case MOF_NON_STOP:
01354       if (!v->IsGroundVehicle()) return CMD_ERROR;
01355       if (data >= ONSF_END) return CMD_ERROR;
01356       if (data == order->GetNonStopType()) return CMD_ERROR;
01357       break;
01358 
01359     case MOF_STOP_LOCATION:
01360       if (v->type != VEH_TRAIN) return CMD_ERROR;
01361       if (data >= OSL_END) return CMD_ERROR;
01362       break;
01363 
01364     case MOF_UNLOAD:
01365       if ((data & ~(OUFB_UNLOAD | OUFB_TRANSFER | OUFB_NO_UNLOAD)) != 0) return CMD_ERROR;
01366       /* Unload and no-unload are mutual exclusive and so are transfer and no unload. */
01367       if (data != 0 && ((data & (OUFB_UNLOAD | OUFB_TRANSFER)) != 0) == ((data & OUFB_NO_UNLOAD) != 0)) return CMD_ERROR;
01368       if (data == order->GetUnloadType()) return CMD_ERROR;
01369       break;
01370 
01371     case MOF_LOAD:
01372       if (data > OLFB_NO_LOAD || data == 1) return CMD_ERROR;
01373       if (data == order->GetLoadType()) return CMD_ERROR;
01374       break;
01375 
01376     case MOF_DEPOT_ACTION:
01377       if (data >= DA_END) return CMD_ERROR;
01378       break;
01379 
01380     case MOF_COND_VARIABLE:
01381       if (data >= OCV_END) return CMD_ERROR;
01382       break;
01383 
01384     case MOF_COND_COMPARATOR:
01385       if (data >= OCC_END) return CMD_ERROR;
01386       switch (order->GetConditionVariable()) {
01387         case OCV_UNCONDITIONALLY: return CMD_ERROR;
01388 
01389         case OCV_REQUIRES_SERVICE:
01390           if (data != OCC_IS_TRUE && data != OCC_IS_FALSE) return CMD_ERROR;
01391           break;
01392 
01393         default:
01394           if (data == OCC_IS_TRUE || data == OCC_IS_FALSE) return CMD_ERROR;
01395           break;
01396       }
01397       break;
01398 
01399     case MOF_COND_VALUE:
01400       switch (order->GetConditionVariable()) {
01401         case OCV_UNCONDITIONALLY: return CMD_ERROR;
01402 
01403         case OCV_LOAD_PERCENTAGE:
01404         case OCV_RELIABILITY:
01405           if (data > 100) return CMD_ERROR;
01406           break;
01407 
01408         default:
01409           if (data > 2047) return CMD_ERROR;
01410           break;
01411       }
01412       break;
01413 
01414     case MOF_COND_DESTINATION:
01415       if (data >= v->GetNumOrders()) return CMD_ERROR;
01416       break;
01417   }
01418 
01419   if (flags & DC_EXEC) {
01420     switch (mof) {
01421       case MOF_NON_STOP:
01422         order->SetNonStopType((OrderNonStopFlags)data);
01423         if (data & ONSF_NO_STOP_AT_DESTINATION_STATION) order->SetRefit(CT_NO_REFIT);
01424         break;
01425 
01426       case MOF_STOP_LOCATION:
01427         order->SetStopLocation((OrderStopLocation)data);
01428         break;
01429 
01430       case MOF_UNLOAD:
01431         order->SetUnloadType((OrderUnloadFlags)data);
01432         break;
01433 
01434       case MOF_LOAD:
01435         order->SetLoadType((OrderLoadFlags)data);
01436         if (data & OLFB_NO_LOAD) order->SetRefit(CT_NO_REFIT);
01437         break;
01438 
01439       case MOF_DEPOT_ACTION: {
01440         switch (data) {
01441           case DA_ALWAYS_GO:
01442             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01443             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01444             break;
01445 
01446           case DA_SERVICE:
01447             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() | ODTFB_SERVICE));
01448             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01449             order->SetRefit(CT_NO_REFIT);
01450             break;
01451 
01452           case DA_STOP:
01453             order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01454             order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() | ODATFB_HALT));
01455             order->SetRefit(CT_NO_REFIT);
01456             break;
01457 
01458           default:
01459             NOT_REACHED();
01460         }
01461         break;
01462       }
01463 
01464       case MOF_COND_VARIABLE: {
01465         order->SetConditionVariable((OrderConditionVariable)data);
01466 
01467         OrderConditionComparator occ = order->GetConditionComparator();
01468         switch (order->GetConditionVariable()) {
01469           case OCV_UNCONDITIONALLY:
01470             order->SetConditionComparator(OCC_EQUALS);
01471             order->SetConditionValue(0);
01472             break;
01473 
01474           case OCV_REQUIRES_SERVICE:
01475             if (occ != OCC_IS_TRUE && occ != OCC_IS_FALSE) order->SetConditionComparator(OCC_IS_TRUE);
01476             break;
01477 
01478           case OCV_LOAD_PERCENTAGE:
01479           case OCV_RELIABILITY:
01480             if (order->GetConditionValue() > 100) order->SetConditionValue(100);
01481             /* FALL THROUGH */
01482           default:
01483             if (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) order->SetConditionComparator(OCC_EQUALS);
01484             break;
01485         }
01486         break;
01487       }
01488 
01489       case MOF_COND_COMPARATOR:
01490         order->SetConditionComparator((OrderConditionComparator)data);
01491         break;
01492 
01493       case MOF_COND_VALUE:
01494         order->SetConditionValue(data);
01495         break;
01496 
01497       case MOF_COND_DESTINATION:
01498         order->SetConditionSkipToOrder(data);
01499         break;
01500 
01501       default: NOT_REACHED();
01502     }
01503 
01504     /* Update the windows and full load flags, also for vehicles that share the same order list */
01505     Vehicle *u = v->FirstShared();
01506     DeleteOrderWarnings(u);
01507     for (; u != NULL; u = u->NextShared()) {
01508       /* Toggle u->current_order "Full load" flag if it changed.
01509        * However, as the same flag is used for depot orders, check
01510        * whether we are not going to a depot as there are three
01511        * cases where the full load flag can be active and only
01512        * one case where the flag is used for depot orders. In the
01513        * other cases for the OrderTypeByte the flags are not used,
01514        * so do not care and those orders should not be active
01515        * when this function is called.
01516        */
01517       if (sel_ord == u->cur_real_order_index &&
01518           (u->current_order.IsType(OT_GOTO_STATION) || u->current_order.IsType(OT_LOADING)) &&
01519           u->current_order.GetLoadType() != order->GetLoadType()) {
01520         u->current_order.SetLoadType(order->GetLoadType());
01521       }
01522       InvalidateVehicleOrder(u, VIWD_MODIFY_ORDERS);
01523     }
01524   }
01525 
01526   return CommandCost();
01527 }
01528 
01536 static bool CheckAircraftOrderDistance(const Aircraft *v_new, const Vehicle *v_order, const Order *first)
01537 {
01538   if (first == NULL || v_new->acache.cached_max_range == 0) return true;
01539 
01540   /* Iterate over all orders to check the distance between all
01541    * 'goto' orders and their respective next order (of any type). */
01542   for (const Order *o = first; o != NULL; o = o->next) {
01543     switch (o->GetType()) {
01544       case OT_GOTO_STATION:
01545       case OT_GOTO_DEPOT:
01546       case OT_GOTO_WAYPOINT:
01547         /* If we don't have a next order, we've reached the end and must check the first order instead. */
01548         if (GetOrderDistance(o, o->next != NULL ? o->next : first, v_order) > v_new->acache.cached_max_range_sqr) return false;
01549         break;
01550 
01551       default: break;
01552     }
01553   }
01554 
01555   return true;
01556 }
01557 
01569 CommandCost CmdCloneOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01570 {
01571   VehicleID veh_src = GB(p2, 0, 20);
01572   VehicleID veh_dst = GB(p1, 0, 20);
01573 
01574   Vehicle *dst = Vehicle::GetIfValid(veh_dst);
01575   if (dst == NULL || !dst->IsPrimaryVehicle()) return CMD_ERROR;
01576 
01577   CommandCost ret = CheckOwnership(dst->owner);
01578   if (ret.Failed()) return ret;
01579 
01580   switch (GB(p1, 30, 2)) {
01581     case CO_SHARE: {
01582       Vehicle *src = Vehicle::GetIfValid(veh_src);
01583 
01584       /* Sanity checks */
01585       if (src == NULL || !src->IsPrimaryVehicle() || dst->type != src->type || dst == src) return CMD_ERROR;
01586 
01587       CommandCost ret = CheckOwnership(src->owner);
01588       if (ret.Failed()) return ret;
01589 
01590       /* Trucks can't share orders with busses (and visa versa) */
01591       if (src->type == VEH_ROAD && RoadVehicle::From(src)->IsBus() != RoadVehicle::From(dst)->IsBus()) {
01592         return CMD_ERROR;
01593       }
01594 
01595       /* Is the vehicle already in the shared list? */
01596       if (src->FirstShared() == dst->FirstShared()) return CMD_ERROR;
01597 
01598       const Order *order;
01599 
01600       FOR_VEHICLE_ORDERS(src, order) {
01601         if (!OrderGoesToStation(dst, order)) continue;
01602 
01603         /* Allow copying unreachable destinations if they were already unreachable for the source.
01604          * This is basically to allow cloning / autorenewing / autoreplacing vehicles, while the stations
01605          * are temporarily invalid due to reconstruction. */
01606         const Station *st = Station::Get(order->GetDestination());
01607         if (CanVehicleUseStation(src, st) && !CanVehicleUseStation(dst, st)) {
01608           return_cmd_error(STR_ERROR_CAN_T_COPY_SHARE_ORDER);
01609         }
01610       }
01611 
01612       /* Check for aircraft range limits. */
01613       if (dst->type == VEH_AIRCRAFT && !CheckAircraftOrderDistance(Aircraft::From(dst), src, src->GetFirstOrder())) {
01614         return_cmd_error(STR_ERROR_AIRCRAFT_NOT_ENOUGH_RANGE);
01615       }
01616 
01617       if (src->orders.list == NULL && !OrderList::CanAllocateItem()) {
01618         return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01619       }
01620 
01621       if (flags & DC_EXEC) {
01622         /* If the destination vehicle had a OrderList, destroy it.
01623          * We only reset the order indices, if the new orders are obviously different.
01624          * (We mainly do this to keep the order indices valid and in range.) */
01625         DeleteVehicleOrders(dst, false, dst->GetNumOrders() != src->GetNumOrders());
01626 
01627         dst->orders.list = src->orders.list;
01628 
01629         /* Link this vehicle in the shared-list */
01630         dst->AddToShared(src);
01631 
01632         InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01633         InvalidateVehicleOrder(src, VIWD_MODIFY_ORDERS);
01634 
01635         InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01636       }
01637       break;
01638     }
01639 
01640     case CO_COPY: {
01641       Vehicle *src = Vehicle::GetIfValid(veh_src);
01642 
01643       /* Sanity checks */
01644       if (src == NULL || !src->IsPrimaryVehicle() || dst->type != src->type || dst == src) return CMD_ERROR;
01645 
01646       CommandCost ret = CheckOwnership(src->owner);
01647       if (ret.Failed()) return ret;
01648 
01649       /* Trucks can't copy all the orders from busses (and visa versa),
01650        * and neither can helicopters and aircarft. */
01651       const Order *order;
01652       FOR_VEHICLE_ORDERS(src, order) {
01653         if (OrderGoesToStation(dst, order) &&
01654             !CanVehicleUseStation(dst, Station::Get(order->GetDestination()))) {
01655           return_cmd_error(STR_ERROR_CAN_T_COPY_SHARE_ORDER);
01656         }
01657       }
01658 
01659       /* Check for aircraft range limits. */
01660       if (dst->type == VEH_AIRCRAFT && !CheckAircraftOrderDistance(Aircraft::From(dst), src, src->GetFirstOrder())) {
01661         return_cmd_error(STR_ERROR_AIRCRAFT_NOT_ENOUGH_RANGE);
01662       }
01663 
01664       /* make sure there are orders available */
01665       if (!Order::CanAllocateItem(src->GetNumOrders()) || !OrderList::CanAllocateItem()) {
01666         return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01667       }
01668 
01669       if (flags & DC_EXEC) {
01670         const Order *order;
01671         Order *first = NULL;
01672         Order **order_dst;
01673 
01674         /* If the destination vehicle had an order list, destroy the chain but keep the OrderList.
01675          * We only reset the order indices, if the new orders are obviously different.
01676          * (We mainly do this to keep the order indices valid and in range.) */
01677         DeleteVehicleOrders(dst, true, dst->GetNumOrders() != src->GetNumOrders());
01678 
01679         order_dst = &first;
01680         FOR_VEHICLE_ORDERS(src, order) {
01681           *order_dst = new Order();
01682           (*order_dst)->AssignOrder(*order);
01683           order_dst = &(*order_dst)->next;
01684         }
01685         if (dst->orders.list == NULL) {
01686           dst->orders.list = new OrderList(first, dst);
01687         } else {
01688           assert(dst->orders.list->GetFirstOrder() == NULL);
01689           assert(!dst->orders.list->IsShared());
01690           delete dst->orders.list;
01691           assert(OrderList::CanAllocateItem());
01692           dst->orders.list = new OrderList(first, dst);
01693         }
01694 
01695         InvalidateVehicleOrder(dst, VIWD_REMOVE_ALL_ORDERS);
01696 
01697         InvalidateWindowClassesData(GetWindowClassForVehicleType(dst->type), 0);
01698       }
01699       break;
01700     }
01701 
01702     case CO_UNSHARE: return DecloneOrder(dst, flags);
01703     default: return CMD_ERROR;
01704   }
01705 
01706   return CommandCost();
01707 }
01708 
01721 CommandCost CmdOrderRefit(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01722 {
01723   VehicleID veh = GB(p1, 0, 20);
01724   VehicleOrderID order_number  = GB(p2, 16, 8);
01725   CargoID cargo = GB(p2, 0, 8);
01726   byte subtype  = GB(p2, 8, 8);
01727 
01728   if (cargo >= NUM_CARGO && cargo != CT_NO_REFIT && cargo != CT_AUTO_REFIT) return CMD_ERROR;
01729 
01730   const Vehicle *v = Vehicle::GetIfValid(veh);
01731   if (v == NULL || !v->IsPrimaryVehicle()) return CMD_ERROR;
01732 
01733   CommandCost ret = CheckOwnership(v->owner);
01734   if (ret.Failed()) return ret;
01735 
01736   Order *order = v->GetOrder(order_number);
01737   if (order == NULL) return CMD_ERROR;
01738 
01739   /* Automatic refit cargo is only supported for goto station orders. */
01740   if (cargo == CT_AUTO_REFIT && !order->IsType(OT_GOTO_STATION)) return CMD_ERROR;
01741 
01742   if (flags & DC_EXEC) {
01743     order->SetRefit(cargo, subtype);
01744 
01745     /* Make the depot order an 'always go' order. */
01746     if (cargo != CT_NO_REFIT && order->IsType(OT_GOTO_DEPOT)) {
01747       order->SetDepotOrderType((OrderDepotTypeFlags)(order->GetDepotOrderType() & ~ODTFB_SERVICE));
01748       order->SetDepotActionType((OrderDepotActionFlags)(order->GetDepotActionType() & ~ODATFB_HALT));
01749     }
01750 
01751     for (Vehicle *u = v->FirstShared(); u != NULL; u = u->NextShared()) {
01752       /* Update any possible open window of the vehicle */
01753       InvalidateVehicleOrder(u, VIWD_MODIFY_ORDERS);
01754 
01755       /* If the vehicle already got the current depot set as current order, then update current order as well */
01756       if (u->cur_real_order_index == order_number && (u->current_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) {
01757         u->current_order.SetRefit(cargo, subtype);
01758       }
01759     }
01760   }
01761 
01762   return CommandCost();
01763 }
01764 
01765 
01771 void CheckOrders(const Vehicle *v)
01772 {
01773   /* Does the user wants us to check things? */
01774   if (_settings_client.gui.order_review_system == 0) return;
01775 
01776   /* Do nothing for crashed vehicles */
01777   if (v->vehstatus & VS_CRASHED) return;
01778 
01779   /* Do nothing for stopped vehicles if setting is '1' */
01780   if (_settings_client.gui.order_review_system == 1 && (v->vehstatus & VS_STOPPED)) return;
01781 
01782   /* do nothing we we're not the first vehicle in a share-chain */
01783   if (v->FirstShared() != v) return;
01784 
01785   /* Only check every 20 days, so that we don't flood the message log */
01786   if (v->owner == _local_company && v->day_counter % 20 == 0) {
01787     int n_st, problem_type = -1;
01788     const Order *order;
01789     int message = 0;
01790 
01791     /* Check the order list */
01792     n_st = 0;
01793 
01794     FOR_VEHICLE_ORDERS(v, order) {
01795       /* Dummy order? */
01796       if (order->IsType(OT_DUMMY)) {
01797         problem_type = 1;
01798         break;
01799       }
01800       /* Does station have a load-bay for this vehicle? */
01801       if (order->IsType(OT_GOTO_STATION)) {
01802         const Station *st = Station::Get(order->GetDestination());
01803 
01804         n_st++;
01805         if (!CanVehicleUseStation(v, st)) problem_type = 3;
01806       }
01807     }
01808 
01809     /* Check if the last and the first order are the same */
01810     if (v->GetNumOrders() > 1) {
01811       const Order *last = v->GetLastOrder();
01812 
01813       if (v->orders.list->GetFirstOrder()->Equals(*last)) {
01814         problem_type = 2;
01815       }
01816     }
01817 
01818     /* Do we only have 1 station in our order list? */
01819     if (n_st < 2 && problem_type == -1) problem_type = 0;
01820 
01821 #ifndef NDEBUG
01822     if (v->orders.list != NULL) v->orders.list->DebugCheckSanity();
01823 #endif
01824 
01825     /* We don't have a problem */
01826     if (problem_type < 0) return;
01827 
01828     message = STR_NEWS_VEHICLE_HAS_TOO_FEW_ORDERS + problem_type;
01829     //DEBUG(misc, 3, "Triggered News Item for vehicle %d", v->index);
01830 
01831     SetDParam(0, v->index);
01832     AddVehicleAdviceNewsItem(message, v->index);
01833   }
01834 }
01835 
01841 void RemoveOrderFromAllVehicles(OrderType type, DestinationID destination)
01842 {
01843   Vehicle *v;
01844 
01845   /* Aircraft have StationIDs for depot orders and never use DepotIDs
01846    * This fact is handled specially below
01847    */
01848 
01849   /* Go through all vehicles */
01850   FOR_ALL_VEHICLES(v) {
01851     Order *order;
01852 
01853     order = &v->current_order;
01854     if ((v->type == VEH_AIRCRAFT && order->IsType(OT_GOTO_DEPOT) ? OT_GOTO_STATION : order->GetType()) == type &&
01855         v->current_order.GetDestination() == destination) {
01856       order->MakeDummy();
01857       SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01858     }
01859 
01860     /* Clear the order from the order-list */
01861     int id = -1;
01862     FOR_VEHICLE_ORDERS(v, order) {
01863       id++;
01864 restart:
01865 
01866       OrderType ot = order->GetType();
01867       if (ot == OT_GOTO_DEPOT && (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) != 0) continue;
01868       if (ot == OT_IMPLICIT || (v->type == VEH_AIRCRAFT && ot == OT_GOTO_DEPOT)) ot = OT_GOTO_STATION;
01869       if (ot == type && order->GetDestination() == destination) {
01870         /* We want to clear implicit orders, but we don't want to make them
01871          * dummy orders. They should just vanish. Also check the actual order
01872          * type as ot is currently OT_GOTO_STATION. */
01873         if (order->IsType(OT_IMPLICIT)) {
01874           order = order->next; // DeleteOrder() invalidates current order
01875           DeleteOrder(v, id);
01876           if (order != NULL) goto restart;
01877           break;
01878         }
01879 
01880         order->MakeDummy();
01881         for (const Vehicle *w = v->FirstShared(); w != NULL; w = w->NextShared()) {
01882           /* In GUI, simulate by removing the order and adding it back */
01883           InvalidateVehicleOrder(w, id | (INVALID_VEH_ORDER_ID << 8));
01884           InvalidateVehicleOrder(w, (INVALID_VEH_ORDER_ID << 8) | id);
01885         }
01886       }
01887     }
01888   }
01889 
01890   OrderBackup::RemoveOrder(type, destination);
01891 }
01892 
01897 bool Vehicle::HasDepotOrder() const
01898 {
01899   const Order *order;
01900 
01901   FOR_VEHICLE_ORDERS(this, order) {
01902     if (order->IsType(OT_GOTO_DEPOT)) return true;
01903   }
01904 
01905   return false;
01906 }
01907 
01917 void DeleteVehicleOrders(Vehicle *v, bool keep_orderlist, bool reset_order_indices)
01918 {
01919   DeleteOrderWarnings(v);
01920 
01921   if (v->IsOrderListShared()) {
01922     /* Remove ourself from the shared order list. */
01923     v->RemoveFromShared();
01924     v->orders.list = NULL;
01925   } else if (v->orders.list != NULL) {
01926     /* Remove the orders */
01927     v->orders.list->FreeChain(keep_orderlist);
01928     if (!keep_orderlist) v->orders.list = NULL;
01929   }
01930 
01931   if (reset_order_indices) {
01932     v->cur_implicit_order_index = v->cur_real_order_index = 0;
01933     if (v->current_order.IsType(OT_LOADING)) {
01934       CancelLoadingDueToDeletedOrder(v);
01935     }
01936   }
01937 }
01938 
01946 uint16 GetServiceIntervalClamped(uint interval, CompanyID company_id)
01947 {
01948   return (Company::Get(company_id)->settings.vehicle.servint_ispercent) ? Clamp(interval, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : Clamp(interval, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
01949 }
01950 
01959 static bool CheckForValidOrders(const Vehicle *v)
01960 {
01961   const Order *order;
01962 
01963   FOR_VEHICLE_ORDERS(v, order) {
01964     switch (order->GetType()) {
01965       case OT_GOTO_STATION:
01966       case OT_GOTO_DEPOT:
01967       case OT_GOTO_WAYPOINT:
01968         return true;
01969 
01970       default:
01971         break;
01972     }
01973   }
01974 
01975   return false;
01976 }
01977 
01981 static bool OrderConditionCompare(OrderConditionComparator occ, int variable, int value)
01982 {
01983   switch (occ) {
01984     case OCC_EQUALS:      return variable == value;
01985     case OCC_NOT_EQUALS:  return variable != value;
01986     case OCC_LESS_THAN:   return variable <  value;
01987     case OCC_LESS_EQUALS: return variable <= value;
01988     case OCC_MORE_THAN:   return variable >  value;
01989     case OCC_MORE_EQUALS: return variable >= value;
01990     case OCC_IS_TRUE:     return variable != 0;
01991     case OCC_IS_FALSE:    return variable == 0;
01992     default: NOT_REACHED();
01993   }
01994 }
01995 
02002 VehicleOrderID ProcessConditionalOrder(const Order *order, const Vehicle *v)
02003 {
02004   if (order->GetType() != OT_CONDITIONAL) return INVALID_VEH_ORDER_ID;
02005 
02006   bool skip_order = false;
02007   OrderConditionComparator occ = order->GetConditionComparator();
02008   uint16 value = order->GetConditionValue();
02009 
02010   switch (order->GetConditionVariable()) {
02011     case OCV_LOAD_PERCENTAGE:    skip_order = OrderConditionCompare(occ, CalcPercentVehicleFilled(v, NULL), value); break;
02012     case OCV_RELIABILITY:        skip_order = OrderConditionCompare(occ, ToPercent16(v->reliability),       value); break;
02013     case OCV_MAX_SPEED:          skip_order = OrderConditionCompare(occ, v->GetDisplayMaxSpeed() * 10 / 16, value); break;
02014     case OCV_AGE:                skip_order = OrderConditionCompare(occ, v->age / DAYS_IN_LEAP_YEAR,        value); break;
02015     case OCV_REQUIRES_SERVICE:   skip_order = OrderConditionCompare(occ, v->NeedsServicing(),               value); break;
02016     case OCV_UNCONDITIONALLY:    skip_order = true; break;
02017     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;
02018     default: NOT_REACHED();
02019   }
02020 
02021   return skip_order ? order->GetConditionSkipToOrder() : (VehicleOrderID)INVALID_VEH_ORDER_ID;
02022 }
02023 
02031 bool UpdateOrderDest(Vehicle *v, const Order *order, int conditional_depth, bool pbs_look_ahead)
02032 {
02033   if (conditional_depth > v->GetNumOrders()) return false;
02034 
02035   switch (order->GetType()) {
02036     case OT_GOTO_STATION:
02037       v->dest_tile = v->GetOrderStationLocation(order->GetDestination());
02038       return true;
02039 
02040     case OT_GOTO_DEPOT:
02041       if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !v->NeedsServicing()) {
02042         assert(!pbs_look_ahead);
02043         UpdateVehicleTimetable(v, true);
02044         v->IncrementRealOrderIndex();
02045         break;
02046       }
02047 
02048       if (v->current_order.GetDepotActionType() & ODATFB_NEAREST_DEPOT) {
02049         /* We need to search for the nearest depot (hangar). */
02050         TileIndex location;
02051         DestinationID destination;
02052         bool reverse;
02053 
02054         if (v->FindClosestDepot(&location, &destination, &reverse)) {
02055           /* PBS reservations cannot reverse */
02056           if (pbs_look_ahead && reverse) return false;
02057 
02058           v->dest_tile = location;
02059           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(), v->current_order.GetRefitSubtype());
02060 
02061           /* If there is no depot in front, reverse automatically (trains only) */
02062           if (v->type == VEH_TRAIN && reverse) DoCommand(v->tile, v->index, 0, DC_EXEC, CMD_REVERSE_TRAIN_DIRECTION);
02063 
02064           if (v->type == VEH_AIRCRAFT) {
02065             Aircraft *a = Aircraft::From(v);
02066             if (a->state == FLYING && a->targetairport != destination) {
02067               /* The aircraft is now heading for a different hangar than the next in the orders */
02068               extern void AircraftNextAirportPos_and_Order(Aircraft *a);
02069               AircraftNextAirportPos_and_Order(a);
02070             }
02071           }
02072           return true;
02073         }
02074 
02075         /* If there is no depot, we cannot help PBS either. */
02076         if (pbs_look_ahead) return false;
02077 
02078         UpdateVehicleTimetable(v, true);
02079         v->IncrementRealOrderIndex();
02080       } else {
02081         if (v->type != VEH_AIRCRAFT) {
02082           v->dest_tile = Depot::Get(order->GetDestination())->xy;
02083         }
02084         return true;
02085       }
02086       break;
02087 
02088     case OT_GOTO_WAYPOINT:
02089       v->dest_tile = Waypoint::Get(order->GetDestination())->xy;
02090       return true;
02091 
02092     case OT_CONDITIONAL: {
02093       assert(!pbs_look_ahead);
02094       VehicleOrderID next_order = ProcessConditionalOrder(order, v);
02095       if (next_order != INVALID_VEH_ORDER_ID) {
02096         /* Jump to next_order. cur_implicit_order_index becomes exactly that order,
02097          * cur_real_order_index might come after next_order. */
02098         UpdateVehicleTimetable(v, false);
02099         v->cur_implicit_order_index = v->cur_real_order_index = next_order;
02100         v->UpdateRealOrderIndex();
02101         v->current_order_time += v->GetOrder(v->cur_real_order_index)->travel_time;
02102 
02103         /* Disable creation of implicit orders.
02104          * When inserting them we do not know that we would have to make the conditional orders point to them. */
02105         if (v->IsGroundVehicle()) {
02106           uint16 &gv_flags = v->GetGroundVehicleFlags();
02107           SetBit(gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
02108         }
02109       } else {
02110         UpdateVehicleTimetable(v, true);
02111         v->IncrementRealOrderIndex();
02112       }
02113       break;
02114     }
02115 
02116     default:
02117       v->dest_tile = 0;
02118       return false;
02119   }
02120 
02121   assert(v->cur_implicit_order_index < v->GetNumOrders());
02122   assert(v->cur_real_order_index < v->GetNumOrders());
02123 
02124   /* Get the current order */
02125   order = v->GetOrder(v->cur_real_order_index);
02126   if (order != NULL && order->IsType(OT_IMPLICIT)) {
02127     assert(v->GetNumManualOrders() == 0);
02128     order = NULL;
02129   }
02130 
02131   if (order == NULL) {
02132     v->current_order.Free();
02133     v->dest_tile = 0;
02134     return false;
02135   }
02136 
02137   v->current_order = *order;
02138   return UpdateOrderDest(v, order, conditional_depth + 1, pbs_look_ahead);
02139 }
02140 
02148 bool ProcessOrders(Vehicle *v)
02149 {
02150   switch (v->current_order.GetType()) {
02151     case OT_GOTO_DEPOT:
02152       /* Let a depot order in the orderlist interrupt. */
02153       if (!(v->current_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) return false;
02154       break;
02155 
02156     case OT_LOADING:
02157       return false;
02158 
02159     case OT_LEAVESTATION:
02160       if (v->type != VEH_AIRCRAFT) return false;
02161       break;
02162 
02163     default: break;
02164   }
02165 
02173   bool may_reverse = v->current_order.IsType(OT_NOTHING);
02174 
02175   /* Check if we've reached a 'via' destination. */
02176   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)) &&
02177       IsTileType(v->tile, MP_STATION) &&
02178       v->current_order.GetDestination() == GetStationIndex(v->tile)) {
02179     v->DeleteUnreachedImplicitOrders();
02180     /* We set the last visited station here because we do not want
02181      * the train to stop at this 'via' station if the next order
02182      * is a no-non-stop order; in that case not setting the last
02183      * visited station will cause the vehicle to still stop. */
02184     v->last_station_visited = v->current_order.GetDestination();
02185     UpdateVehicleTimetable(v, true);
02186     v->IncrementImplicitOrderIndex();
02187   }
02188 
02189   /* Get the current order */
02190   assert(v->cur_implicit_order_index == 0 || v->cur_implicit_order_index < v->GetNumOrders());
02191   v->UpdateRealOrderIndex();
02192 
02193   const Order *order = v->GetOrder(v->cur_real_order_index);
02194   if (order != NULL && order->IsType(OT_IMPLICIT)) {
02195     assert(v->GetNumManualOrders() == 0);
02196     order = NULL;
02197   }
02198 
02199   /* If no order, do nothing. */
02200   if (order == NULL || (v->type == VEH_AIRCRAFT && !CheckForValidOrders(v))) {
02201     if (v->type == VEH_AIRCRAFT) {
02202       /* Aircraft do something vastly different here, so handle separately */
02203       extern void HandleMissingAircraftOrders(Aircraft *v);
02204       HandleMissingAircraftOrders(Aircraft::From(v));
02205       return false;
02206     }
02207 
02208     v->current_order.Free();
02209     v->dest_tile = 0;
02210     return false;
02211   }
02212 
02213   /* If it is unchanged, keep it. */
02214   if (order->Equals(v->current_order) && (v->type == VEH_AIRCRAFT || v->dest_tile != 0) &&
02215       (v->type != VEH_SHIP || !order->IsType(OT_GOTO_STATION) || Station::Get(order->GetDestination())->dock_tile != INVALID_TILE)) {
02216     return false;
02217   }
02218 
02219   /* Otherwise set it, and determine the destination tile. */
02220   v->current_order = *order;
02221 
02222   InvalidateVehicleOrder(v, VIWD_MODIFY_ORDERS);
02223   switch (v->type) {
02224     default:
02225       NOT_REACHED();
02226 
02227     case VEH_ROAD:
02228     case VEH_TRAIN:
02229       break;
02230 
02231     case VEH_AIRCRAFT:
02232     case VEH_SHIP:
02233       SetWindowClassesDirty(GetWindowClassForVehicleType(v->type));
02234       break;
02235   }
02236 
02237   return UpdateOrderDest(v, order) && may_reverse;
02238 }
02239 
02247 bool Order::ShouldStopAtStation(const Vehicle *v, StationID station) const
02248 {
02249   bool is_dest_station = this->IsType(OT_GOTO_STATION) && this->dest == station;
02250 
02251   return (!this->IsType(OT_GOTO_DEPOT) || (this->GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0) &&
02252       v->last_station_visited != station && // Do stop only when we've not just been there
02253       /* Finally do stop when there is no non-stop flag set for this type of station. */
02254       !(this->GetNonStopType() & (is_dest_station ? ONSF_NO_STOP_AT_DESTINATION_STATION : ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS));
02255 }
02256 
02257 bool Order::CanLoadOrUnload() const
02258 {
02259   return (this->IsType(OT_GOTO_STATION) || this->IsType(OT_IMPLICIT)) &&
02260       (this->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) == 0 &&
02261       ((this->GetLoadType() & OLFB_NO_LOAD) == 0 ||
02262       (this->GetUnloadType() & OUFB_NO_UNLOAD) == 0);
02263 }
02264 
02271 bool Order::CanLeaveWithCargo(bool has_cargo) const
02272 {
02273   return (this->GetLoadType() & OLFB_NO_LOAD) == 0 || (has_cargo &&
02274       (this->GetUnloadType() & (OUFB_UNLOAD | OUFB_TRANSFER)) == 0);
02275 }