# vehicle_sl.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 "../vehicle_func.h"
    00014 #include "../train.h"
    00015 #include "../roadveh.h"
    00016 #include "../ship.h"
    00017 #include "../aircraft.h"
    00018 #include "../station_base.h"
    00019 #include "../effectvehicle_base.h"
    00020
    00021 #include "saveload.h"
    00022
    00023 #include <map>
    00024
    00025 /*
    00026  * Link front and rear multiheaded engines to each other
    00027  * This is done when loading a savegame
    00028  */
    00029 void ConnectMultiheadedTrains()
    00030 {
    00031   Train *v;
    00032
    00033   FOR_ALL_TRAINS(v) {
    00034     v->other_multiheaded_part = NULL;
    00035   }
    00036
    00037   FOR_ALL_TRAINS(v) {
    00038     if (v->IsFrontEngine() || v->IsFreeWagon()) {
    00039       /* Two ways to associate multiheaded parts to each other:
    00040        * sequential-matching: Trains shall be arranged to look like <..>..<..>..<..>..
    00041        * bracket-matching:    Free vehicle chains shall be arranged to look like ..<..<..>..<..>..>..
    00042        *
    00043        * Note: Old savegames might contain chains which do not comply with these rules, e.g.
    00044        *   - the front and read parts have invalid orders
    00045        *   - different engine types might be combined
    00046        *   - there might be different amounts of front and rear parts.
    00047        *
    00048        * Note: The multiheaded parts need to be matched exactly like they are matched on the server, else desyncs will occur.
    00049        *   This is why two matching strategies are needed.
    00050        */
    00051
    00052       bool sequential_matching = v->IsFrontEngine();
    00053
    00054       for (Train *u = v; u != NULL; u = u->GetNextVehicle()) {
    00055         if (u->other_multiheaded_part != NULL) continue; // we already linked this one
    00056
    00057         if (u->IsMultiheaded()) {
    00058           if (!u->IsEngine()) {
    00059             /* we got a rear car without a front car. We will convert it to a front one */
    00060             u->SetEngine();
    00061             u->spritenum--;
    00062           }
    00063
    00064           /* Find a matching back part */
    00065           EngineID eid = u->engine_type;
    00066           Train *w;
    00067           if (sequential_matching) {
    00068             for (w = u->GetNextVehicle(); w != NULL; w = w->GetNextVehicle()) {
    00069               if (w->engine_type != eid || w->other_multiheaded_part != NULL || !w->IsMultiheaded()) continue;
    00070
    00071               /* we found a car to partner with this engine. Now we will make sure it face the right way */
    00072               if (w->IsEngine()) {
    00073                 w->ClearEngine();
    00074                 w->spritenum++;
    00075               }
    00076               break;
    00077             }
    00078           } else {
    00079             uint stack_pos = 0;
    00080             for (w = u->GetNextVehicle(); w != NULL; w = w->GetNextVehicle()) {
    00081               if (w->engine_type != eid || w->other_multiheaded_part != NULL || !w->IsMultiheaded()) continue;
    00082
    00083               if (w->IsEngine()) {
    00084                 stack_pos++;
    00085               } else {
    00086                 if (stack_pos == 0) break;
    00087                 stack_pos--;
    00088               }
    00089             }
    00090           }
    00091
    00092           if (w != NULL) {
    00093             w->other_multiheaded_part = u;
    00094             u->other_multiheaded_part = w;
    00095           } else {
    00096             /* we got a front car and no rear cars. We will fake this one for forget that it should have been multiheaded */
    00097             u->ClearMultiheaded();
    00098           }
    00099         }
    00100       }
    00101     }
    00102   }
    00103 }
    00104
    00109 void ConvertOldMultiheadToNew()
    00110 {
    00111   Train *t;
    00112   FOR_ALL_TRAINS(t) SetBit(t->subtype, 7); // indicates that it's the old format and needs to be converted in the next loop
    00113
    00114   FOR_ALL_TRAINS(t) {
    00115     if (HasBit(t->subtype, 7) && ((t->subtype & ~0x80) == 0 || (t->subtype & ~0x80) == 4)) {
    00116       for (Train *u = t; u != NULL; u = u->Next()) {
    00117         const RailVehicleInfo *rvi = RailVehInfo(u->engine_type);
    00118
    00119         ClrBit(u->subtype, 7);
    00120         switch (u->subtype) {
    00121           case 0: // TS_Front_Engine
    00122             if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
    00123             u->SetFrontEngine();
    00124             u->SetEngine();
    00125             break;
    00126
    00127           case 1: // TS_Artic_Part
    00128             u->subtype = 0;
    00129             u->SetArticulatedPart();
    00130             break;
    00131
    00132           case 2: // TS_Not_First
    00133             u->subtype = 0;
    00134             if (rvi->railveh_type == RAILVEH_WAGON) {
    00135               /* normal wagon */
    00136               u->SetWagon();
    00137               break;
    00138             }
    00139             if (rvi->railveh_type == RAILVEH_MULTIHEAD && rvi->image_index == u->spritenum - 1) {
    00140               /* rear end of a multiheaded engine */
    00141               u->SetMultiheaded();
    00142               break;
    00143             }
    00144             if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
    00145             u->SetEngine();
    00146             break;
    00147
    00148           case 4: // TS_Free_Car
    00149             u->subtype = 0;
    00150             u->SetWagon();
    00151             u->SetFreeWagon();
    00152             break;
    00153           default: NOT_REACHED();
    00154         }
    00155       }
    00156     }
    00157   }
    00158 }
    00159
    00160
    00162 void UpdateOldAircraft()
    00163 {
    00164   /* set airport_flags to 0 for all airports just to be sure */
    00165   Station *st;
    00166   FOR_ALL_STATIONS(st) {
    00167     st->airport_flags = 0; // reset airport
    00168   }
    00169
    00170   Aircraft *a;
    00171   FOR_ALL_AIRCRAFT(a) {
    00172     /* airplane has another vehicle with subtype 4 (shadow), helicopter also has 3 (rotor)
    00173      * skip those */
    00174     if (a->IsNormalAircraft()) {
    00175       /* airplane in terminal stopped doesn't hurt anyone, so goto next */
    00176       if ((a->vehstatus & VS_STOPPED) && a->state == 0) {
    00177         a->state = HANGAR;
    00178         continue;
    00179       }
    00180
    00181       AircraftLeaveHangar(a); // make airplane visible if it was in a depot for example
    00182       a->vehstatus &= ~VS_STOPPED; // make airplane moving
    00183       a->cur_speed = a->max_speed; // so aircraft don't have zero speed while in air
    00184       if (!a->current_order.IsType(OT_GOTO_STATION) && !a->current_order.IsType(OT_GOTO_DEPOT)) {
    00185         /* reset current order so aircraft doesn't have invalid "station-only" order */
    00186         a->current_order.MakeDummy();
    00187       }
    00188       a->state = FLYING;
    00189       AircraftNextAirportPos_and_Order(a); // move it to the entry point of the airport
    00190       GetNewVehiclePosResult gp = GetNewVehiclePos(a);
    00191       a->tile = 0; // aircraft in air is tile=0
    00192
    00193       /* correct speed of helicopter-rotors */
    00194       if (a->subtype == AIR_HELICOPTER) a->Next()->Next()->cur_speed = 32;
    00195
    00196       /* set new position x,y,z */
    00197       SetAircraftPosition(a, gp.x, gp.y, GetAircraftFlyingAltitude(a));
    00198     }
    00199   }
    00200 }
    00201
    00209 static void CheckValidVehicles()
    00210 {
    00211   size_t total_engines = Engine::GetPoolSize();
    00212   EngineID first_engine[4] = { INVALID_ENGINE, INVALID_ENGINE, INVALID_ENGINE, INVALID_ENGINE };
    00213
    00214   Engine *e;
    00215   FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) { first_engine[VEH_TRAIN] = e->index; break; }
    00216   FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) { first_engine[VEH_ROAD] = e->index; break; }
    00217   FOR_ALL_ENGINES_OF_TYPE(e, VEH_SHIP) { first_engine[VEH_SHIP] = e->index; break; }
    00218   FOR_ALL_ENGINES_OF_TYPE(e, VEH_AIRCRAFT) { first_engine[VEH_AIRCRAFT] = e->index; break; }
    00219
    00220   Vehicle *v;
    00221   FOR_ALL_VEHICLES(v) {
    00222     /* Test if engine types match */
    00223     switch (v->type) {
    00224       case VEH_TRAIN:
    00225       case VEH_ROAD:
    00226       case VEH_SHIP:
    00227       case VEH_AIRCRAFT:
    00228         if (v->engine_type >= total_engines || v->type != Engine::Get(v->engine_type)->type) {
    00229           v->engine_type = first_engine[v->type];
    00230         }
    00231         break;
    00232
    00233       default:
    00234         break;
    00235     }
    00236   }
    00237 }
    00238
    00240 void AfterLoadVehicles(bool part_of_load)
    00241 {
    00242   Vehicle *v;
    00243
    00244   FOR_ALL_VEHICLES(v) {
    00245     /* Reinstate the previous pointer */
    00246     if (v->Next() != NULL) v->Next()->previous = v;
    00247     if (v->NextShared() != NULL) v->NextShared()->previous_shared = v;
    00248
    00249     v->UpdateDeltaXY(v->direction);
    00250
    00251     if (part_of_load) v->fill_percent_te_id = INVALID_TE_ID;
    00252     v->first = NULL;
    00253     if (v->type == VEH_TRAIN) Train::From(v)->tcache.first_engine = INVALID_ENGINE;
    00254     if (v->type == VEH_ROAD)  RoadVehicle::From(v)->rcache.first_engine = INVALID_ENGINE;
    00255   }
    00256
    00257   /* AfterLoadVehicles may also be called in case of NewGRF reload, in this
    00258    * case we may not convert orders again. */
    00259   if (part_of_load) {
    00260     /* Create shared vehicle chain for very old games (pre 5,2) and create
    00261      * OrderList from shared vehicle chains. For this to work correctly, the
    00262      * following conditions must be fulfilled:
    00263      * a) both next_shared and previous_shared are not set for pre 5,2 games
    00264      * b) both next_shared and previous_shared are set for later games
    00265      */
    00266     std::map<Order*, OrderList*> mapping;
    00267
    00268     FOR_ALL_VEHICLES(v) {
    00269       if (v->orders.old != NULL) {
    00270         if (CheckSavegameVersion(105)) { // Pre-105 didn't save an OrderList
    00271           if (mapping[v->orders.old] == NULL) {
    00272             /* This adds the whole shared vehicle chain for case b */
    00273             v->orders.list = mapping[v->orders.old] = new OrderList(v->orders.old, v);
    00274           } else {
    00275             v->orders.list = mapping[v->orders.old];
    00276             /* For old games (case a) we must create the shared vehicle chain */
    00277             if (CheckSavegameVersionOldStyle(5, 2)) {
    00278               v->AddToShared(v->orders.list->GetFirstSharedVehicle());
    00279             }
    00280           }
    00281         } else { // OrderList was saved as such, only recalculate not saved values
    00282           if (v->PreviousShared() == NULL) {
    00283             v->orders.list->Initialize(v->orders.list->first, v);
    00284           }
    00285         }
    00286       }
    00287     }
    00288   }
    00289
    00290   FOR_ALL_VEHICLES(v) {
    00291     /* Fill the first pointers */
    00292     if (v->Previous() == NULL) {
    00293       for (Vehicle *u = v; u != NULL; u = u->Next()) {
    00294         u->first = v;
    00295       }
    00296     }
    00297   }
    00298
    00299   if (CheckSavegameVersion(105)) {
    00300     /* Before 105 there was no order for shared orders, thus it messed up horribly */
    00301     FOR_ALL_VEHICLES(v) {
    00302       if (v->First() != v || v->orders.list != NULL || v->previous_shared != NULL || v->next_shared == NULL) continue;
    00303
    00304       v->orders.list = new OrderList(NULL, v);
    00305       for (Vehicle *u = v; u != NULL; u = u->next_shared) {
    00306         u->orders.list = v->orders.list;
    00307       }
    00308     }
    00309   }
    00310
    00311   CheckValidVehicles();
    00312
    00313   FOR_ALL_VEHICLES(v) {
    00314     assert(v->first != NULL);
    00315
    00316     if (v->type == VEH_TRAIN) {
    00317       Train *t = Train::From(v);
    00318       if (t->IsFrontEngine() || t->IsFreeWagon()) {
    00319         t->tcache.last_speed = t->cur_speed; // update displayed train speed
    00320         TrainConsistChanged(t, false);
    00321       }
    00322     } else if (v->type == VEH_ROAD) {
    00323       RoadVehicle *rv = RoadVehicle::From(v);
    00324       if (rv->IsRoadVehFront()) {
    00325         RoadVehUpdateCache(rv);
    00326       }
    00327     }
    00328   }
    00329
    00330   /* Stop non-front engines */
    00331   if (CheckSavegameVersion(112)) {
    00332     FOR_ALL_VEHICLES(v) {
    00333       if (v->type == VEH_TRAIN) {
    00334         Train *t = Train::From(v);
    00335         if (!t->IsFrontEngine()) {
    00336           if (t->IsEngine()) t->vehstatus |= VS_STOPPED;
    00337           /* cur_speed is now relevant for non-front parts - nonzero breaks
    00338            * moving-wagons-inside-depot- and autoreplace- code */
    00339           t->cur_speed = 0;
    00340         }
    00341       }
    00342       /* trains weren't stopping gradually in old OTTD versions (and TTO/TTD)
    00343        * other vehicle types didn't have zero speed while stopped (even in 'recent' OTTD versions) */
    00344       if ((v->vehstatus & VS_STOPPED) && (v->type != VEH_TRAIN || CheckSavegameVersionOldStyle(2, 1))) {
    00345         v->cur_speed = 0;
    00346       }
    00347     }
    00348   }
    00349
    00350   FOR_ALL_VEHICLES(v) {
    00351     switch (v->type) {
    00352       case VEH_ROAD: {
    00353         RoadVehicle *rv = RoadVehicle::From(v);
    00354         rv->roadtype = HasBit(EngInfo(v->First()->engine_type)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD;
    00355         rv->compatible_roadtypes = RoadTypeToRoadTypes(rv->roadtype);
    00356       }
    00357         /* FALL THROUGH */
    00358       case VEH_TRAIN:
    00359       case VEH_SHIP:
    00360         v->cur_image = v->GetImage(v->direction);
    00361         break;
    00362
    00363       case VEH_AIRCRAFT:
    00364         if (Aircraft::From(v)->IsNormalAircraft()) {
    00365           v->cur_image = v->GetImage(v->direction);
    00366
    00367           /* The plane's shadow will have the same image as the plane */
    00368           Vehicle *shadow = v->Next();
    00369           shadow->cur_image = v->cur_image;
    00370
    00371           /* In the case of a helicopter we will update the rotor sprites */
    00372           if (v->subtype == AIR_HELICOPTER) {
    00373             Vehicle *rotor = shadow->Next();
    00374             rotor->cur_image = GetRotorImage(Aircraft::From(v));
    00375           }
    00376
    00377           UpdateAircraftCache(Aircraft::From(v));
    00378         }
    00379         break;
    00380       default: break;
    00381     }
    00382
    00383     v->coord.left = INVALID_COORD;
    00384     VehicleMove(v, false);
    00385   }
    00386 }
    00387
    00388 static uint8  _cargo_days;
    00389 static uint16 _cargo_source;
    00390 static uint32 _cargo_source_xy;
    00391 static uint16 _cargo_count;
    00392 static uint16 _cargo_paid_for;
    00393 static Money  _cargo_feeder_share;
    00394 static uint32 _cargo_loaded_at_xy;
    00395
    00401 const SaveLoad *GetVehicleDescription(VehicleType vt)
    00402 {
    00404   static const SaveLoad _common_veh_desc[] = {
    00405          SLE_VAR(Vehicle, subtype,               SLE_UINT8),
    00406
    00407          SLE_REF(Vehicle, next,                  REF_VEHICLE_OLD),
    00408      SLE_CONDVAR(Vehicle, name,                  SLE_NAME,                     0,  83),
    00409      SLE_CONDSTR(Vehicle, name,                  SLE_STR, 0,                  84, SL_MAX_VERSION),
    00410      SLE_CONDVAR(Vehicle, unitnumber,            SLE_FILE_U8  | SLE_VAR_U16,   0,   7),
    00411      SLE_CONDVAR(Vehicle, unitnumber,            SLE_UINT16,                   8, SL_MAX_VERSION),
    00412          SLE_VAR(Vehicle, owner,                 SLE_UINT8),
    00413      SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00414      SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
    00415      SLE_CONDVAR(Vehicle, dest_tile,             SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00416      SLE_CONDVAR(Vehicle, dest_tile,             SLE_UINT32,                   6, SL_MAX_VERSION),
    00417
    00418      SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00419      SLE_CONDVAR(Vehicle, x_pos,                 SLE_UINT32,                   6, SL_MAX_VERSION),
    00420      SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00421      SLE_CONDVAR(Vehicle, y_pos,                 SLE_UINT32,                   6, SL_MAX_VERSION),
    00422          SLE_VAR(Vehicle, z_pos,                 SLE_UINT8),
    00423          SLE_VAR(Vehicle, direction,             SLE_UINT8),
    00424
    00425     SLE_CONDNULL(2,                                                            0,  57),
    00426          SLE_VAR(Vehicle, spritenum,             SLE_UINT8),
    00427     SLE_CONDNULL(5,                                                            0,  57),
    00428          SLE_VAR(Vehicle, engine_type,           SLE_UINT16),
    00429
    00430          SLE_VAR(Vehicle, max_speed,             SLE_UINT16),
    00431          SLE_VAR(Vehicle, cur_speed,             SLE_UINT16),
    00432          SLE_VAR(Vehicle, subspeed,              SLE_UINT8),
    00433          SLE_VAR(Vehicle, acceleration,          SLE_UINT8),
    00434          SLE_VAR(Vehicle, progress,              SLE_UINT8),
    00435
    00436          SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),
    00437      SLE_CONDVAR(Vehicle, last_station_visited,  SLE_FILE_U8  | SLE_VAR_U16,   0,   4),
    00438      SLE_CONDVAR(Vehicle, last_station_visited,  SLE_UINT16,                   5, SL_MAX_VERSION),
    00439
    00440          SLE_VAR(Vehicle, cargo_type,            SLE_UINT8),
    00441      SLE_CONDVAR(Vehicle, cargo_subtype,         SLE_UINT8,                   35, SL_MAX_VERSION),
    00442     SLEG_CONDVAR(         _cargo_days,           SLE_UINT8,                    0,  67),
    00443     SLEG_CONDVAR(         _cargo_source,         SLE_FILE_U8  | SLE_VAR_U16,   0,   6),
    00444     SLEG_CONDVAR(         _cargo_source,         SLE_UINT16,                   7,  67),
    00445     SLEG_CONDVAR(         _cargo_source_xy,      SLE_UINT32,                  44,  67),
    00446          SLE_VAR(Vehicle, cargo_cap,             SLE_UINT16),
    00447     SLEG_CONDVAR(         _cargo_count,          SLE_UINT16,                   0,  67),
    00448      SLE_CONDLST(Vehicle, cargo.packets,         REF_CARGO_PACKET,            68, SL_MAX_VERSION),
    00449
    00450          SLE_VAR(Vehicle, day_counter,           SLE_UINT8),
    00451          SLE_VAR(Vehicle, tick_counter,          SLE_UINT8),
    00452      SLE_CONDVAR(Vehicle, running_ticks,         SLE_UINT8,                   88, SL_MAX_VERSION),
    00453
    00454          SLE_VAR(Vehicle, cur_order_index,       SLE_UINT8),
    00455     /* num_orders is now part of OrderList and is not saved but counted */
    00456     SLE_CONDNULL(1,                                                            0, 104),
    00457
    00458     /* This next line is for version 4 and prior compatibility.. it temporarily reads
    00459      type and flags (which were both 4 bits) into type. Later on this is
    00460      converted correctly */
    00461      SLE_CONDVAR(Vehicle, current_order.type,    SLE_UINT8,                    0,   4),
    00462      SLE_CONDVAR(Vehicle, current_order.dest,    SLE_FILE_U8  | SLE_VAR_U16,   0,   4),
    00463
    00464     /* Orders for version 5 and on */
    00465      SLE_CONDVAR(Vehicle, current_order.type,    SLE_UINT8,                    5, SL_MAX_VERSION),
    00466      SLE_CONDVAR(Vehicle, current_order.flags,   SLE_UINT8,                    5, SL_MAX_VERSION),
    00467      SLE_CONDVAR(Vehicle, current_order.dest,    SLE_UINT16,                   5, SL_MAX_VERSION),
    00468
    00469     /* Refit in current order */
    00470      SLE_CONDVAR(Vehicle, current_order.refit_cargo,   SLE_UINT8,             36, SL_MAX_VERSION),
    00471      SLE_CONDVAR(Vehicle, current_order.refit_subtype, SLE_UINT8,             36, SL_MAX_VERSION),
    00472
    00473     /* Timetable in current order */
    00474      SLE_CONDVAR(Vehicle, current_order.wait_time,     SLE_UINT16,            67, SL_MAX_VERSION),
    00475      SLE_CONDVAR(Vehicle, current_order.travel_time,   SLE_UINT16,            67, SL_MAX_VERSION),
    00476      SLE_CONDVAR(Vehicle, timetable_start,       SLE_INT32,                  129, SL_MAX_VERSION),
    00477
    00478      SLE_CONDREF(Vehicle, orders,                REF_ORDER,                    0, 104),
    00479      SLE_CONDREF(Vehicle, orders,                REF_ORDERLIST,              105, SL_MAX_VERSION),
    00480
    00481      SLE_CONDVAR(Vehicle, age,                   SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
    00482      SLE_CONDVAR(Vehicle, age,                   SLE_INT32,                   31, SL_MAX_VERSION),
    00483      SLE_CONDVAR(Vehicle, max_age,               SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
    00484      SLE_CONDVAR(Vehicle, max_age,               SLE_INT32,                   31, SL_MAX_VERSION),
    00485      SLE_CONDVAR(Vehicle, date_of_last_service,  SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
    00486      SLE_CONDVAR(Vehicle, date_of_last_service,  SLE_INT32,                   31, SL_MAX_VERSION),
    00487      SLE_CONDVAR(Vehicle, service_interval,      SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
    00488      SLE_CONDVAR(Vehicle, service_interval,      SLE_INT32,                   31, SL_MAX_VERSION),
    00489          SLE_VAR(Vehicle, reliability,           SLE_UINT16),
    00490          SLE_VAR(Vehicle, reliability_spd_dec,   SLE_UINT16),
    00491          SLE_VAR(Vehicle, breakdown_ctr,         SLE_UINT8),
    00492          SLE_VAR(Vehicle, breakdown_delay,       SLE_UINT8),
    00493          SLE_VAR(Vehicle, breakdowns_since_last_service, SLE_UINT8),
    00494          SLE_VAR(Vehicle, breakdown_chance,      SLE_UINT8),
    00495      SLE_CONDVAR(Vehicle, build_year,            SLE_FILE_U8 | SLE_VAR_I32,    0,  30),
    00496      SLE_CONDVAR(Vehicle, build_year,            SLE_INT32,                   31, SL_MAX_VERSION),
    00497
    00498          SLE_VAR(Vehicle, time_counter,          SLE_UINT16),
    00499     SLEG_CONDVAR(         _cargo_paid_for,       SLE_UINT16,                  45, SL_MAX_VERSION),
    00500      SLE_CONDVAR(Vehicle, vehicle_flags,         SLE_UINT8,                   40, SL_MAX_VERSION),
    00501
    00502      SLE_CONDVAR(Vehicle, profit_this_year,      SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
    00503      SLE_CONDVAR(Vehicle, profit_this_year,      SLE_INT64,                   65, SL_MAX_VERSION),
    00504      SLE_CONDVAR(Vehicle, profit_last_year,      SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
    00505      SLE_CONDVAR(Vehicle, profit_last_year,      SLE_INT64,                   65, SL_MAX_VERSION),
    00506     SLEG_CONDVAR(         _cargo_feeder_share,   SLE_FILE_I32 | SLE_VAR_I64,  51,  64),
    00507     SLEG_CONDVAR(         _cargo_feeder_share,   SLE_INT64,                   65,  67),
    00508     SLEG_CONDVAR(         _cargo_loaded_at_xy,   SLE_UINT32,                  51,  67),
    00509      SLE_CONDVAR(Vehicle, value,                 SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
    00510      SLE_CONDVAR(Vehicle, value,                 SLE_INT64,                   65, SL_MAX_VERSION),
    00511
    00512      SLE_CONDVAR(Vehicle, random_bits,           SLE_UINT8,                    2, SL_MAX_VERSION),
    00513      SLE_CONDVAR(Vehicle, waiting_triggers,      SLE_UINT8,                    2, SL_MAX_VERSION),
    00514
    00515      SLE_CONDREF(Vehicle, next_shared,           REF_VEHICLE,                  2, SL_MAX_VERSION),
    00516     SLE_CONDNULL(2,                                                            2,  68),
    00517     SLE_CONDNULL(4,                                                           69, 100),
    00518
    00519      SLE_CONDVAR(Vehicle, group_id,              SLE_UINT16,                  60, SL_MAX_VERSION),
    00520
    00521      SLE_CONDVAR(Vehicle, current_order_time,    SLE_UINT32,                  67, SL_MAX_VERSION),
    00522      SLE_CONDVAR(Vehicle, lateness_counter,      SLE_INT32,                   67, SL_MAX_VERSION),
    00523
    00524     /* reserve extra space in savegame here. (currently 10 bytes) */
    00525     SLE_CONDNULL(10,                                                           2, SL_MAX_VERSION),
    00526
    00527          SLE_END()
    00528   };
    00529
    00530
    00531   static const SaveLoad _train_desc[] = {
    00532     SLE_WRITEBYTE(Vehicle, type, VEH_TRAIN),
    00533     SLE_VEH_INCLUDE(),
    00534          SLE_VAR(Train, crash_anim_pos,      SLE_UINT16),
    00535          SLE_VAR(Train, force_proceed,       SLE_UINT8),
    00536          SLE_VAR(Train, railtype,            SLE_UINT8),
    00537          SLE_VAR(Train, track,               SLE_UINT8),
    00538
    00539      SLE_CONDVAR(Train, flags,               SLE_FILE_U8  | SLE_VAR_U16,   2,  99),
    00540      SLE_CONDVAR(Train, flags,               SLE_UINT16,                 100, SL_MAX_VERSION),
    00541     SLE_CONDNULL(2, 2, 59),
    00542
    00543     SLE_CONDNULL(2, 2, 19),
    00544     /* reserve extra space in savegame here. (currently 11 bytes) */
    00545     SLE_CONDNULL(11, 2, SL_MAX_VERSION),
    00546
    00547          SLE_END()
    00548   };
    00549
    00550   static const SaveLoad _roadveh_desc[] = {
    00551     SLE_WRITEBYTE(Vehicle, type, VEH_ROAD),
    00552     SLE_VEH_INCLUDE(),
    00553          SLE_VAR(RoadVehicle, state,                SLE_UINT8),
    00554          SLE_VAR(RoadVehicle, frame,                SLE_UINT8),
    00555          SLE_VAR(RoadVehicle, blocked_ctr,          SLE_UINT16),
    00556          SLE_VAR(RoadVehicle, overtaking,           SLE_UINT8),
    00557          SLE_VAR(RoadVehicle, overtaking_ctr,       SLE_UINT8),
    00558          SLE_VAR(RoadVehicle, crashed_ctr,          SLE_UINT16),
    00559          SLE_VAR(RoadVehicle, reverse_ctr,          SLE_UINT8),
    00560
    00561     SLE_CONDNULL(2,                                                               6,  68),
    00562     SLE_CONDNULL(4,                                                              69, 130),
    00563     SLE_CONDNULL(2,                                                               6, 130),
    00564     /* reserve extra space in savegame here. (currently 16 bytes) */
    00565     SLE_CONDNULL(16,                                                              2, SL_MAX_VERSION),
    00566
    00567          SLE_END()
    00568   };
    00569
    00570   static const SaveLoad _ship_desc[] = {
    00571     SLE_WRITEBYTE(Vehicle, type, VEH_SHIP),
    00572     SLE_VEH_INCLUDE(),
    00573          SLE_VAR(Ship, state, SLE_UINT8),
    00574
    00575     /* reserve extra space in savegame here. (currently 16 bytes) */
    00576     SLE_CONDNULL(16, 2, SL_MAX_VERSION),
    00577
    00578          SLE_END()
    00579   };
    00580
    00581   static const SaveLoad _aircraft_desc[] = {
    00582     SLE_WRITEBYTE(Vehicle, type, VEH_AIRCRAFT),
    00583     SLE_VEH_INCLUDE(),
    00584          SLE_VAR(Aircraft, crashed_counter,       SLE_UINT16),
    00585          SLE_VAR(Aircraft, pos,                   SLE_UINT8),
    00586
    00587      SLE_CONDVAR(Aircraft, targetairport,         SLE_FILE_U8  | SLE_VAR_U16,   0, 4),
    00588      SLE_CONDVAR(Aircraft, targetairport,         SLE_UINT16,                   5, SL_MAX_VERSION),
    00589
    00590          SLE_VAR(Aircraft, state,                 SLE_UINT8),
    00591
    00592      SLE_CONDVAR(Aircraft, previous_pos,          SLE_UINT8,                    2, SL_MAX_VERSION),
    00593      SLE_CONDVAR(Aircraft, last_direction,        SLE_UINT8,                    2, SL_MAX_VERSION),
    00594      SLE_CONDVAR(Aircraft, number_consecutive_turns, SLE_UINT8,                 2, SL_MAX_VERSION),
    00595
    00596     /* reserve extra space in savegame here. (currently 13 bytes) */
    00597     SLE_CONDNULL(13,                                                           2, SL_MAX_VERSION),
    00598
    00599          SLE_END()
    00600   };
    00601
    00602   static const SaveLoad _special_desc[] = {
    00603     SLE_WRITEBYTE(Vehicle, type, VEH_EFFECT),
    00604
    00605          SLE_VAR(Vehicle, subtype,               SLE_UINT8),
    00606
    00607      SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00608      SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
    00609
    00610      SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
    00611      SLE_CONDVAR(Vehicle, x_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
    00612      SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
    00613      SLE_CONDVAR(Vehicle, y_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
    00614          SLE_VAR(Vehicle, z_pos,                 SLE_UINT8),
    00615
    00616          SLE_VAR(Vehicle, cur_image,             SLE_UINT16),
    00617     SLE_CONDNULL(5,                                                            0,  57),
    00618          SLE_VAR(Vehicle, progress,              SLE_UINT8),
    00619          SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),
    00620
    00621          SLE_VAR(EffectVehicle, animation_state,    SLE_UINT16),
    00622          SLE_VAR(EffectVehicle, animation_substate, SLE_UINT8),
    00623
    00624      SLE_CONDVAR(Vehicle, spritenum,             SLE_UINT8,                    2, SL_MAX_VERSION),
    00625
    00626     /* reserve extra space in savegame here. (currently 15 bytes) */
    00627     SLE_CONDNULL(15,                                                           2, SL_MAX_VERSION),
    00628
    00629          SLE_END()
    00630   };
    00631
    00632   static const SaveLoad _disaster_desc[] = {
    00633     SLE_WRITEBYTE(Vehicle, type, VEH_DISASTER),
    00634
    00635          SLE_REF(Vehicle, next,                  REF_VEHICLE_OLD),
    00636
    00637          SLE_VAR(Vehicle, subtype,               SLE_UINT8),
    00638      SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00639      SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
    00640      SLE_CONDVAR(Vehicle, dest_tile,             SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
    00641      SLE_CONDVAR(Vehicle, dest_tile,             SLE_UINT32,                   6, SL_MAX_VERSION),
    00642
    00643      SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
    00644      SLE_CONDVAR(Vehicle, x_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
    00645      SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
    00646      SLE_CONDVAR(Vehicle, y_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
    00647          SLE_VAR(Vehicle, z_pos,                 SLE_UINT8),
    00648          SLE_VAR(Vehicle, direction,             SLE_UINT8),
    00649
    00650     SLE_CONDNULL(5,                                                            0,  57),
    00651          SLE_VAR(Vehicle, owner,                 SLE_UINT8),
    00652          SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),
    00653      SLE_CONDVAR(Vehicle, current_order.dest,    SLE_FILE_U8 | SLE_VAR_U16,    0,   4),
    00654      SLE_CONDVAR(Vehicle, current_order.dest,    SLE_UINT16,                   5, SL_MAX_VERSION),
    00655
    00656          SLE_VAR(Vehicle, cur_image,             SLE_UINT16),
    00657      SLE_CONDVAR(Vehicle, age,                   SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
    00658      SLE_CONDVAR(Vehicle, age,                   SLE_INT32,                   31, SL_MAX_VERSION),
    00659          SLE_VAR(Vehicle, tick_counter,          SLE_UINT8),
    00660
    00661          SLE_VAR(DisasterVehicle, image_override,            SLE_UINT16),
    00662          SLE_VAR(DisasterVehicle, big_ufo_destroyer_target,  SLE_UINT16),
    00663
    00664     /* reserve extra space in savegame here. (currently 16 bytes) */
    00665     SLE_CONDNULL(16,                                                           2, SL_MAX_VERSION),
    00666
    00667          SLE_END()
    00668   };
    00669
    00670
    00671   static const SaveLoad * const _veh_descs[] = {
    00672     _train_desc,
    00673     _roadveh_desc,
    00674     _ship_desc,
    00675     _aircraft_desc,
    00676     _special_desc,
    00677     _disaster_desc,
    00678     _common_veh_desc,
    00679   };
    00680
    00681   return _veh_descs[vt];
    00682 }
    00683
    00685 static void Save_VEHS()
    00686 {
    00687   Vehicle *v;
    00688   /* Write the vehicles */
    00689   FOR_ALL_VEHICLES(v) {
    00690     SlSetArrayIndex(v->index);
    00691     SlObject(v, GetVehicleDescription(v->type));
    00692   }
    00693 }
    00694
    00696 void Load_VEHS()
    00697 {
    00698   int index;
    00699
    00700   _cargo_count = 0;
    00701
    00702   while ((index = SlIterateArray()) != -1) {
    00703     Vehicle *v;
    00704     VehicleType vtype = (VehicleType)SlReadByte();
    00705
    00706     switch (vtype) {
    00707       case VEH_TRAIN:    v = new (index) Train();           break;
    00708       case VEH_ROAD:     v = new (index) RoadVehicle();     break;
    00709       case VEH_SHIP:     v = new (index) Ship();            break;
    00710       case VEH_AIRCRAFT: v = new (index) Aircraft();        break;
    00711       case VEH_EFFECT:   v = new (index) EffectVehicle();   break;
    00712       case VEH_DISASTER: v = new (index) DisasterVehicle(); break;
    00713       case VEH_INVALID: /* Savegame shouldn't contain invalid vehicles */
    00714       default: NOT_REACHED();
    00715     }
    00716
    00717     SlObject(v, GetVehicleDescription(vtype));
    00718
    00719     if (_cargo_count != 0 && IsCompanyBuildableVehicleType(v)) {
    00720       /* Don't construct the packet with station here, because that'll fail with old savegames */
    00721       CargoPacket *cp = new CargoPacket(_cargo_count, _cargo_days, _cargo_source, _cargo_source_xy, _cargo_loaded_at_xy, _cargo_feeder_share);
    00722       v->cargo.Append(cp);
    00723     }
    00724
    00725     /* Old savegames used 'last_station_visited = 0xFF' */
    00726     if (CheckSavegameVersion(5) && v->last_station_visited == 0xFF)
    00727       v->last_station_visited = INVALID_STATION;
    00728
    00729     if (CheckSavegameVersion(5)) {
    00730       /* Convert the current_order.type (which is a mix of type and flags, because
    00731        *  in those versions, they both were 4 bits big) to type and flags */
    00732       v->current_order.flags = GB(v->current_order.type, 4, 4);
    00733       v->current_order.type &= 0x0F;
    00734     }
    00735
    00736     /* Advanced vehicle lists got added */
    00737     if (CheckSavegameVersion(60)) v->group_id = DEFAULT_GROUP;
    00738   }
    00739 }
    00740
    00741 static void Ptrs_VEHS()
    00742 {
    00743   Vehicle *v;
    00744   FOR_ALL_VEHICLES(v) {
    00745     SlObject(v, GetVehicleDescription(v->type));
    00746   }
    00747 }
    00748
    00749 extern const ChunkHandler _veh_chunk_handlers[] = {
    00750   { 'VEHS', Save_VEHS, Load_VEHS, Ptrs_VEHS, CH_SPARSE_ARRAY | CH_LAST},
    00751 };