Files @ r19056:723de07a18e9
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Location: cpp/openttd-patchpack/source/src/saveload/vehicle_sl.cpp - annotation

rubidium
(svn r23924) -Fix [FS#5054]: [NoGo] "Some" news messages would cause an assertion to be triggered due to a missing proper location for the viewport of the news message, so only allow building when valid data for the viewport is provided or no viewport is used
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/* $Id$ */

/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */

/** @file vehicle_sl.cpp Code handling saving and loading of vehicles */

#include "../stdafx.h"
#include "../vehicle_func.h"
#include "../train.h"
#include "../roadveh.h"
#include "../ship.h"
#include "../aircraft.h"
#include "../station_base.h"
#include "../effectvehicle_base.h"

#include "saveload.h"

#include <map>

/**
 * Link front and rear multiheaded engines to each other
 * This is done when loading a savegame
 */
void ConnectMultiheadedTrains()
{
	Train *v;

	FOR_ALL_TRAINS(v) {
		v->other_multiheaded_part = NULL;
	}

	FOR_ALL_TRAINS(v) {
		if (v->IsFrontEngine() || v->IsFreeWagon()) {
			/* Two ways to associate multiheaded parts to each other:
			 * sequential-matching: Trains shall be arranged to look like <..>..<..>..<..>..
			 * bracket-matching:    Free vehicle chains shall be arranged to look like ..<..<..>..<..>..>..
			 *
			 * Note: Old savegames might contain chains which do not comply with these rules, e.g.
			 *   - the front and read parts have invalid orders
			 *   - different engine types might be combined
			 *   - there might be different amounts of front and rear parts.
			 *
			 * Note: The multiheaded parts need to be matched exactly like they are matched on the server, else desyncs will occur.
			 *   This is why two matching strategies are needed.
			 */

			bool sequential_matching = v->IsFrontEngine();

			for (Train *u = v; u != NULL; u = u->GetNextVehicle()) {
				if (u->other_multiheaded_part != NULL) continue; // we already linked this one

				if (u->IsMultiheaded()) {
					if (!u->IsEngine()) {
						/* we got a rear car without a front car. We will convert it to a front one */
						u->SetEngine();
						u->spritenum--;
					}

					/* Find a matching back part */
					EngineID eid = u->engine_type;
					Train *w;
					if (sequential_matching) {
						for (w = u->GetNextVehicle(); w != NULL; w = w->GetNextVehicle()) {
							if (w->engine_type != eid || w->other_multiheaded_part != NULL || !w->IsMultiheaded()) continue;

							/* we found a car to partner with this engine. Now we will make sure it face the right way */
							if (w->IsEngine()) {
								w->ClearEngine();
								w->spritenum++;
							}
							break;
						}
					} else {
						uint stack_pos = 0;
						for (w = u->GetNextVehicle(); w != NULL; w = w->GetNextVehicle()) {
							if (w->engine_type != eid || w->other_multiheaded_part != NULL || !w->IsMultiheaded()) continue;

							if (w->IsEngine()) {
								stack_pos++;
							} else {
								if (stack_pos == 0) break;
								stack_pos--;
							}
						}
					}

					if (w != NULL) {
						w->other_multiheaded_part = u;
						u->other_multiheaded_part = w;
					} else {
						/* we got a front car and no rear cars. We will fake this one for forget that it should have been multiheaded */
						u->ClearMultiheaded();
					}
				}
			}
		}
	}
}

/**
 *  Converts all trains to the new subtype format introduced in savegame 16.2
 *  It also links multiheaded engines or make them forget they are multiheaded if no suitable partner is found
 */
void ConvertOldMultiheadToNew()
{
	Train *t;
	FOR_ALL_TRAINS(t) SetBit(t->subtype, 7); // indicates that it's the old format and needs to be converted in the next loop

	FOR_ALL_TRAINS(t) {
		if (HasBit(t->subtype, 7) && ((t->subtype & ~0x80) == 0 || (t->subtype & ~0x80) == 4)) {
			for (Train *u = t; u != NULL; u = u->Next()) {
				const RailVehicleInfo *rvi = RailVehInfo(u->engine_type);

				ClrBit(u->subtype, 7);
				switch (u->subtype) {
					case 0: // TS_Front_Engine
						if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
						u->SetFrontEngine();
						u->SetEngine();
						break;

					case 1: // TS_Artic_Part
						u->subtype = 0;
						u->SetArticulatedPart();
						break;

					case 2: // TS_Not_First
						u->subtype = 0;
						if (rvi->railveh_type == RAILVEH_WAGON) {
							/* normal wagon */
							u->SetWagon();
							break;
						}
						if (rvi->railveh_type == RAILVEH_MULTIHEAD && rvi->image_index == u->spritenum - 1) {
							/* rear end of a multiheaded engine */
							u->SetMultiheaded();
							break;
						}
						if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
						u->SetEngine();
						break;

					case 4: // TS_Free_Car
						u->subtype = 0;
						u->SetWagon();
						u->SetFreeWagon();
						break;
					default: SlErrorCorrupt("Invalid train subtype");
				}
			}
		}
	}
}


/** need to be called to load aircraft from old version */
void UpdateOldAircraft()
{
	/* set airport_flags to 0 for all airports just to be sure */
	Station *st;
	FOR_ALL_STATIONS(st) {
		st->airport.flags = 0; // reset airport
	}

	Aircraft *a;
	FOR_ALL_AIRCRAFT(a) {
		/* airplane has another vehicle with subtype 4 (shadow), helicopter also has 3 (rotor)
		 * skip those */
		if (a->IsNormalAircraft()) {
			/* airplane in terminal stopped doesn't hurt anyone, so goto next */
			if ((a->vehstatus & VS_STOPPED) && a->state == 0) {
				a->state = HANGAR;
				continue;
			}

			AircraftLeaveHangar(a, a->direction); // make airplane visible if it was in a depot for example
			a->vehstatus &= ~VS_STOPPED; // make airplane moving
			UpdateAircraftCache(a);
			a->cur_speed = a->vcache.cached_max_speed; // so aircraft don't have zero speed while in air
			if (!a->current_order.IsType(OT_GOTO_STATION) && !a->current_order.IsType(OT_GOTO_DEPOT)) {
				/* reset current order so aircraft doesn't have invalid "station-only" order */
				a->current_order.MakeDummy();
			}
			a->state = FLYING;
			AircraftNextAirportPos_and_Order(a); // move it to the entry point of the airport
			GetNewVehiclePosResult gp = GetNewVehiclePos(a);
			a->tile = 0; // aircraft in air is tile=0

			/* correct speed of helicopter-rotors */
			if (a->subtype == AIR_HELICOPTER) a->Next()->Next()->cur_speed = 32;

			/* set new position x,y,z */
			SetAircraftPosition(a, gp.x, gp.y, GetAircraftFlyingAltitude(a));
		}
	}
}

/**
 * Check all vehicles to ensure their engine type is valid
 * for the currently loaded NewGRFs (that includes none...)
 * This only makes a difference if NewGRFs are missing, otherwise
 * all vehicles will be valid. This does not make such a game
 * playable, it only prevents crash.
 */
static void CheckValidVehicles()
{
	size_t total_engines = Engine::GetPoolSize();
	EngineID first_engine[4] = { INVALID_ENGINE, INVALID_ENGINE, INVALID_ENGINE, INVALID_ENGINE };

	Engine *e;
	FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) { first_engine[VEH_TRAIN] = e->index; break; }
	FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) { first_engine[VEH_ROAD] = e->index; break; }
	FOR_ALL_ENGINES_OF_TYPE(e, VEH_SHIP) { first_engine[VEH_SHIP] = e->index; break; }
	FOR_ALL_ENGINES_OF_TYPE(e, VEH_AIRCRAFT) { first_engine[VEH_AIRCRAFT] = e->index; break; }

	Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		/* Test if engine types match */
		switch (v->type) {
			case VEH_TRAIN:
			case VEH_ROAD:
			case VEH_SHIP:
			case VEH_AIRCRAFT:
				if (v->engine_type >= total_engines || v->type != v->GetEngine()->type) {
					v->engine_type = first_engine[v->type];
				}
				break;

			default:
				break;
		}
	}
}

extern byte _age_cargo_skip_counter; // From misc_sl.cpp

/** Called after load to update coordinates */
void AfterLoadVehicles(bool part_of_load)
{
	Vehicle *v;

	FOR_ALL_VEHICLES(v) {
		/* Reinstate the previous pointer */
		if (v->Next() != NULL) v->Next()->previous = v;
		if (v->NextShared() != NULL) v->NextShared()->previous_shared = v;

		if (part_of_load) v->fill_percent_te_id = INVALID_TE_ID;
		v->first = NULL;
		if (v->IsGroundVehicle()) v->GetGroundVehicleCache()->first_engine = INVALID_ENGINE;
	}

	/* AfterLoadVehicles may also be called in case of NewGRF reload, in this
	 * case we may not convert orders again. */
	if (part_of_load) {
		/* Create shared vehicle chain for very old games (pre 5,2) and create
		 * OrderList from shared vehicle chains. For this to work correctly, the
		 * following conditions must be fulfilled:
		 * a) both next_shared and previous_shared are not set for pre 5,2 games
		 * b) both next_shared and previous_shared are set for later games
		 */
		std::map<Order*, OrderList*> mapping;

		FOR_ALL_VEHICLES(v) {
			if (v->orders.old != NULL) {
				if (IsSavegameVersionBefore(105)) { // Pre-105 didn't save an OrderList
					if (mapping[v->orders.old] == NULL) {
						/* This adds the whole shared vehicle chain for case b */

						/* Creating an OrderList here is safe because the number of vehicles
						 * allowed in these savegames matches the number of OrderLists. As
						 * such each vehicle can get an OrderList and it will (still) fit. */
						assert(OrderList::CanAllocateItem());
						v->orders.list = mapping[v->orders.old] = new OrderList(v->orders.old, v);
					} else {
						v->orders.list = mapping[v->orders.old];
						/* For old games (case a) we must create the shared vehicle chain */
						if (IsSavegameVersionBefore(5, 2)) {
							v->AddToShared(v->orders.list->GetFirstSharedVehicle());
						}
					}
				} else { // OrderList was saved as such, only recalculate not saved values
					if (v->PreviousShared() == NULL) {
						v->orders.list->Initialize(v->orders.list->first, v);
					}
				}
			}
		}
	}

	FOR_ALL_VEHICLES(v) {
		/* Fill the first pointers */
		if (v->Previous() == NULL) {
			for (Vehicle *u = v; u != NULL; u = u->Next()) {
				u->first = v;
			}
		}
	}

	if (part_of_load) {
		if (IsSavegameVersionBefore(105)) {
			/* Before 105 there was no order for shared orders, thus it messed up horribly */
			FOR_ALL_VEHICLES(v) {
				if (v->First() != v || v->orders.list != NULL || v->previous_shared != NULL || v->next_shared == NULL) continue;

				/* As above, allocating OrderList here is safe. */
				assert(OrderList::CanAllocateItem());
				v->orders.list = new OrderList(NULL, v);
				for (Vehicle *u = v; u != NULL; u = u->next_shared) {
					u->orders.list = v->orders.list;
				}
			}
		}

		if (IsSavegameVersionBefore(157)) {
			/* The road vehicle subtype was converted to a flag. */
			RoadVehicle *rv;
			FOR_ALL_ROADVEHICLES(rv) {
				if (rv->subtype == 0) {
					/* The road vehicle is at the front. */
					rv->SetFrontEngine();
				} else if (rv->subtype == 1) {
					/* The road vehicle is an articulated part. */
					rv->subtype = 0;
					rv->SetArticulatedPart();
				} else {
					SlErrorCorrupt("Invalid road vehicle subtype");
				}
			}
		}

		if (IsSavegameVersionBefore(160)) {
			/* In some old savegames there might be some "crap" stored. */
			FOR_ALL_VEHICLES(v) {
				if (!v->IsPrimaryVehicle() && v->type != VEH_DISASTER) {
					v->current_order.Free();
					v->unitnumber = 0;
				}
			}
		}

		if (IsSavegameVersionBefore(162)) {
			/* Set the vehicle-local cargo age counter from the old global counter. */
			FOR_ALL_VEHICLES(v) {
				v->cargo_age_counter = _age_cargo_skip_counter;
			}
		}
	}

	CheckValidVehicles();

	FOR_ALL_VEHICLES(v) {
		assert(v->first != NULL);

		switch (v->type) {
			case VEH_TRAIN: {
				Train *t = Train::From(v);
				if (t->IsFrontEngine() || t->IsFreeWagon()) {
					t->gcache.last_speed = t->cur_speed; // update displayed train speed
					t->ConsistChanged(false);
				}
				break;
			}

			case VEH_ROAD: {
				RoadVehicle *rv = RoadVehicle::From(v);
				if (rv->IsFrontEngine()) {
					rv->gcache.last_speed = rv->cur_speed; // update displayed road vehicle speed
					RoadVehUpdateCache(rv);
					if (_settings_game.vehicle.roadveh_acceleration_model != AM_ORIGINAL) {
						rv->CargoChanged();
					}
				}
				break;
			}

			case VEH_SHIP:
				Ship::From(v)->UpdateCache();
				break;

			default: break;
		}
	}

	/* Stop non-front engines */
	if (part_of_load && IsSavegameVersionBefore(112)) {
		FOR_ALL_VEHICLES(v) {
			if (v->type == VEH_TRAIN) {
				Train *t = Train::From(v);
				if (!t->IsFrontEngine()) {
					if (t->IsEngine()) t->vehstatus |= VS_STOPPED;
					/* cur_speed is now relevant for non-front parts - nonzero breaks
					 * moving-wagons-inside-depot- and autoreplace- code */
					t->cur_speed = 0;
				}
			}
			/* trains weren't stopping gradually in old OTTD versions (and TTO/TTD)
			 * other vehicle types didn't have zero speed while stopped (even in 'recent' OTTD versions) */
			if ((v->vehstatus & VS_STOPPED) && (v->type != VEH_TRAIN || IsSavegameVersionBefore(2, 1))) {
				v->cur_speed = 0;
			}
		}
	}

	FOR_ALL_VEHICLES(v) {
		switch (v->type) {
			case VEH_ROAD: {
				RoadVehicle *rv = RoadVehicle::From(v);
				rv->roadtype = HasBit(EngInfo(v->First()->engine_type)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD;
				rv->compatible_roadtypes = RoadTypeToRoadTypes(rv->roadtype);
				/* FALL THROUGH */
			}

			case VEH_TRAIN:
			case VEH_SHIP:
				v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
				break;

			case VEH_AIRCRAFT:
				if (Aircraft::From(v)->IsNormalAircraft()) {
					v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);

					/* The plane's shadow will have the same image as the plane */
					Vehicle *shadow = v->Next();
					shadow->cur_image = v->cur_image;

					/* In the case of a helicopter we will update the rotor sprites */
					if (v->subtype == AIR_HELICOPTER) {
						Vehicle *rotor = shadow->Next();
						rotor->cur_image = GetRotorImage(Aircraft::From(v), EIT_ON_MAP);
					}

					UpdateAircraftCache(Aircraft::From(v), true);
				}
				break;
			default: break;
		}

		v->UpdateDeltaXY(v->direction);
		v->coord.left = INVALID_COORD;
		VehicleUpdatePosition(v);
		VehicleUpdateViewport(v, false);
	}
}

bool TrainController(Train *v, Vehicle *nomove, bool reverse = true); // From train_cmd.cpp
void ReverseTrainDirection(Train *v);
void ReverseTrainSwapVeh(Train *v, int l, int r);

/** Fixup old train spacing. */
void FixupTrainLengths()
{
	/* Vehicle center was moved from 4 units behind the front to half the length
	 * behind the front. Move vehicles so they end up on the same spot. */
	Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_TRAIN && v->IsPrimaryVehicle()) {
			/* The vehicle center is now more to the front depending on vehicle length,
			 * so we need to move all vehicles forward to cover the difference to the
			 * old center, otherwise wagon spacing in trains would be broken upon load. */
			for (Train *u = Train::From(v); u != NULL; u = u->Next()) {
				if (u->track == TRACK_BIT_DEPOT || (u->vehstatus & VS_CRASHED)) continue;

				Train *next = u->Next();

				/* Try to pull the vehicle half its length forward. */
				int diff = (VEHICLE_LENGTH - u->gcache.cached_veh_length) / 2;
				int done;
				for (done = 0; done < diff; done++) {
					if (!TrainController(u, next, false)) break;
				}

				if (next != NULL && done < diff && u->IsFrontEngine()) {
					/* Pulling the front vehicle forwards failed, we either encountered a dead-end
					 * or a red signal. To fix this, we try to move the whole train the required
					 * space backwards and re-do the fix up of the front vehicle. */

					/* Ignore any signals when backtracking. */
					TrainForceProceeding old_tfp = u->force_proceed;
					u->force_proceed = TFP_SIGNAL;

					/* Swap start<>end, start+1<>end-1, ... */
					int r = CountVehiclesInChain(u) - 1; // number of vehicles - 1
					int l = 0;
					do ReverseTrainSwapVeh(u, l++, r--); while (l <= r);

					/* We moved the first vehicle which is now the last. Move it back to the
					 * original position as we will fix up the last vehicle later in the loop. */
					for (int i = 0; i < done; i++) TrainController(u->Last(), NULL);

					/* Move the train backwards to get space for the first vehicle. As the stopping
					 * distance from a line end is rounded up, move the train one unit more to cater
					 * for front vehicles with odd lengths. */
					int moved;
					for (moved = 0; moved < diff + 1; moved++) {
						if (!TrainController(u, NULL, false)) break;
					}

					/* Swap start<>end, start+1<>end-1, ... again. */
					r = CountVehiclesInChain(u) - 1; // number of vehicles - 1
					l = 0;
					do ReverseTrainSwapVeh(u, l++, r--); while (l <= r);

					u->force_proceed = old_tfp;

					/* Tracks are too short to fix the train length. The player has to fix the
					 * train in a depot. Bail out so we don't damage the vehicle chain any more. */
					if (moved < diff + 1) break;

					/* Re-do the correction for the first vehicle. */
					for (done = 0; done < diff; done++) TrainController(u, next, false);

					/* We moved one unit more backwards than needed for even-length front vehicles,
					 * try to move that unit forward again. We don't care if this step fails. */
					TrainController(u, NULL, false);
				}

				/* If the next wagon is still in a depot, check if it shouldn't be outside already. */
				if (next != NULL && next->track == TRACK_BIT_DEPOT) {
					int d = TicksToLeaveDepot(u);
					if (d <= 0) {
						/* Next vehicle should have left the depot already, show it and pull forward. */
						next->vehstatus &= ~VS_HIDDEN;
						next->track = TrackToTrackBits(GetRailDepotTrack(next->tile));
						for (int i = 0; i >= d; i--) TrainController(next, NULL);
					}
				}
			}

			/* Update all cached properties after moving the vehicle chain around. */
			Train::From(v)->ConsistChanged(true);
		}
	}
}

static uint8  _cargo_days;
static uint16 _cargo_source;
static uint32 _cargo_source_xy;
static uint16 _cargo_count;
static uint16 _cargo_paid_for;
static Money  _cargo_feeder_share;
static uint32 _cargo_loaded_at_xy;

/**
 * Make it possible to make the saveload tables "friends" of other classes.
 * @param vt the vehicle type. Can be VEH_END for the common vehicle description data
 * @return the saveload description
 */
const SaveLoad *GetVehicleDescription(VehicleType vt)
{
	/** Save and load of vehicles */
	static const SaveLoad _common_veh_desc[] = {
		     SLE_VAR(Vehicle, subtype,               SLE_UINT8),

		     SLE_REF(Vehicle, next,                  REF_VEHICLE_OLD),
		 SLE_CONDVAR(Vehicle, name,                  SLE_NAME,                     0,  83),
		 SLE_CONDSTR(Vehicle, name,                  SLE_STR | SLF_ALLOW_CONTROL, 0, 84, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, unitnumber,            SLE_FILE_U8  | SLE_VAR_U16,   0,   7),
		 SLE_CONDVAR(Vehicle, unitnumber,            SLE_UINT16,                   8, SL_MAX_VERSION),
		     SLE_VAR(Vehicle, owner,                 SLE_UINT8),
		 SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, dest_tile,             SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, dest_tile,             SLE_UINT32,                   6, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_UINT32,                   6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_UINT32,                   6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_FILE_U8  | SLE_VAR_I32,   0, 163),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_INT32,                  164, SL_MAX_VERSION),
		     SLE_VAR(Vehicle, direction,             SLE_UINT8),

		SLE_CONDNULL(2,                                                            0,  57),
		     SLE_VAR(Vehicle, spritenum,             SLE_UINT8),
		SLE_CONDNULL(5,                                                            0,  57),
		     SLE_VAR(Vehicle, engine_type,           SLE_UINT16),

		SLE_CONDNULL(2,                                                            0,  151),
		     SLE_VAR(Vehicle, cur_speed,             SLE_UINT16),
		     SLE_VAR(Vehicle, subspeed,              SLE_UINT8),
		     SLE_VAR(Vehicle, acceleration,          SLE_UINT8),
		     SLE_VAR(Vehicle, progress,              SLE_UINT8),

		     SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),
		 SLE_CONDVAR(Vehicle, last_station_visited,  SLE_FILE_U8  | SLE_VAR_U16,   0,   4),
		 SLE_CONDVAR(Vehicle, last_station_visited,  SLE_UINT16,                   5, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, cargo_type,            SLE_UINT8),
		 SLE_CONDVAR(Vehicle, cargo_subtype,         SLE_UINT8,                   35, SL_MAX_VERSION),
		SLEG_CONDVAR(         _cargo_days,           SLE_UINT8,                    0,  67),
		SLEG_CONDVAR(         _cargo_source,         SLE_FILE_U8  | SLE_VAR_U16,   0,   6),
		SLEG_CONDVAR(         _cargo_source,         SLE_UINT16,                   7,  67),
		SLEG_CONDVAR(         _cargo_source_xy,      SLE_UINT32,                  44,  67),
		     SLE_VAR(Vehicle, cargo_cap,             SLE_UINT16),
		SLEG_CONDVAR(         _cargo_count,          SLE_UINT16,                   0,  67),
		 SLE_CONDLST(Vehicle, cargo.packets,         REF_CARGO_PACKET,            68, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, cargo_age_counter,     SLE_UINT16,                 162, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, day_counter,           SLE_UINT8),
		     SLE_VAR(Vehicle, tick_counter,          SLE_UINT8),
		 SLE_CONDVAR(Vehicle, running_ticks,         SLE_UINT8,                   88, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, cur_implicit_order_index,  SLE_UINT8),
		 SLE_CONDVAR(Vehicle, cur_real_order_index,  SLE_UINT8,                  158, SL_MAX_VERSION),
		/* num_orders is now part of OrderList and is not saved but counted */
		SLE_CONDNULL(1,                                                            0, 104),

		/* This next line is for version 4 and prior compatibility.. it temporarily reads
		 type and flags (which were both 4 bits) into type. Later on this is
		 converted correctly */
		 SLE_CONDVAR(Vehicle, current_order.type,    SLE_UINT8,                    0,   4),
		 SLE_CONDVAR(Vehicle, current_order.dest,    SLE_FILE_U8  | SLE_VAR_U16,   0,   4),

		/* Orders for version 5 and on */
		 SLE_CONDVAR(Vehicle, current_order.type,    SLE_UINT8,                    5, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, current_order.flags,   SLE_UINT8,                    5, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, current_order.dest,    SLE_UINT16,                   5, SL_MAX_VERSION),

		/* Refit in current order */
		 SLE_CONDVAR(Vehicle, current_order.refit_cargo,   SLE_UINT8,             36, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, current_order.refit_subtype, SLE_UINT8,             36, SL_MAX_VERSION),

		/* Timetable in current order */
		 SLE_CONDVAR(Vehicle, current_order.wait_time,     SLE_UINT16,            67, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, current_order.travel_time,   SLE_UINT16,            67, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, timetable_start,       SLE_INT32,                  129, SL_MAX_VERSION),

		 SLE_CONDREF(Vehicle, orders,                REF_ORDER,                    0, 104),
		 SLE_CONDREF(Vehicle, orders,                REF_ORDERLIST,              105, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, age,                   SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
		 SLE_CONDVAR(Vehicle, age,                   SLE_INT32,                   31, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, max_age,               SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
		 SLE_CONDVAR(Vehicle, max_age,               SLE_INT32,                   31, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, date_of_last_service,  SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
		 SLE_CONDVAR(Vehicle, date_of_last_service,  SLE_INT32,                   31, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, service_interval,      SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
		 SLE_CONDVAR(Vehicle, service_interval,      SLE_INT32,                   31, SL_MAX_VERSION),
		     SLE_VAR(Vehicle, reliability,           SLE_UINT16),
		     SLE_VAR(Vehicle, reliability_spd_dec,   SLE_UINT16),
		     SLE_VAR(Vehicle, breakdown_ctr,         SLE_UINT8),
		     SLE_VAR(Vehicle, breakdown_delay,       SLE_UINT8),
		     SLE_VAR(Vehicle, breakdowns_since_last_service, SLE_UINT8),
		     SLE_VAR(Vehicle, breakdown_chance,      SLE_UINT8),
		 SLE_CONDVAR(Vehicle, build_year,            SLE_FILE_U8 | SLE_VAR_I32,    0,  30),
		 SLE_CONDVAR(Vehicle, build_year,            SLE_INT32,                   31, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, load_unload_ticks,     SLE_UINT16),
		SLEG_CONDVAR(         _cargo_paid_for,       SLE_UINT16,                  45, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, vehicle_flags,         SLE_UINT8,                   40, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, profit_this_year,      SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
		 SLE_CONDVAR(Vehicle, profit_this_year,      SLE_INT64,                   65, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, profit_last_year,      SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
		 SLE_CONDVAR(Vehicle, profit_last_year,      SLE_INT64,                   65, SL_MAX_VERSION),
		SLEG_CONDVAR(         _cargo_feeder_share,   SLE_FILE_I32 | SLE_VAR_I64,  51,  64),
		SLEG_CONDVAR(         _cargo_feeder_share,   SLE_INT64,                   65,  67),
		SLEG_CONDVAR(         _cargo_loaded_at_xy,   SLE_UINT32,                  51,  67),
		 SLE_CONDVAR(Vehicle, value,                 SLE_FILE_I32 | SLE_VAR_I64,   0,  64),
		 SLE_CONDVAR(Vehicle, value,                 SLE_INT64,                   65, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, random_bits,           SLE_UINT8,                    2, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, waiting_triggers,      SLE_UINT8,                    2, SL_MAX_VERSION),

		 SLE_CONDREF(Vehicle, next_shared,           REF_VEHICLE,                  2, SL_MAX_VERSION),
		SLE_CONDNULL(2,                                                            2,  68),
		SLE_CONDNULL(4,                                                           69, 100),

		 SLE_CONDVAR(Vehicle, group_id,              SLE_UINT16,                  60, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, current_order_time,    SLE_UINT32,                  67, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, lateness_counter,      SLE_INT32,                   67, SL_MAX_VERSION),

		SLE_CONDNULL(10,                                                           2, 143), // old reserved space

		     SLE_END()
	};


	static const SaveLoad _train_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_TRAIN),
		SLE_VEH_INCLUDE(),
		     SLE_VAR(Train, crash_anim_pos,      SLE_UINT16),
		     SLE_VAR(Train, force_proceed,       SLE_UINT8),
		     SLE_VAR(Train, railtype,            SLE_UINT8),
		     SLE_VAR(Train, track,               SLE_UINT8),

		 SLE_CONDVAR(Train, flags,               SLE_FILE_U8  | SLE_VAR_U16,   2,  99),
		 SLE_CONDVAR(Train, flags,               SLE_UINT16,                 100, SL_MAX_VERSION),
		SLE_CONDNULL(2, 2, 59),

		 SLE_CONDVAR(Train, wait_counter,        SLE_UINT16,                 136, SL_MAX_VERSION),

		SLE_CONDNULL(2, 2, 19),
		 SLE_CONDVAR(Train, gv_flags,            SLE_UINT16,                 139, SL_MAX_VERSION),
		SLE_CONDNULL(11, 2, 143), // old reserved space

		     SLE_END()
	};

	static const SaveLoad _roadveh_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_ROAD),
		SLE_VEH_INCLUDE(),
		     SLE_VAR(RoadVehicle, state,                SLE_UINT8),
		     SLE_VAR(RoadVehicle, frame,                SLE_UINT8),
		     SLE_VAR(RoadVehicle, blocked_ctr,          SLE_UINT16),
		     SLE_VAR(RoadVehicle, overtaking,           SLE_UINT8),
		     SLE_VAR(RoadVehicle, overtaking_ctr,       SLE_UINT8),
		     SLE_VAR(RoadVehicle, crashed_ctr,          SLE_UINT16),
		     SLE_VAR(RoadVehicle, reverse_ctr,          SLE_UINT8),

		SLE_CONDNULL(2,                                                               6,  68),
		 SLE_CONDVAR(RoadVehicle, gv_flags,             SLE_UINT16,                 139, SL_MAX_VERSION),
		SLE_CONDNULL(4,                                                              69, 130),
		SLE_CONDNULL(2,                                                               6, 130),
		SLE_CONDNULL(16,                                                              2, 143), // old reserved space

		     SLE_END()
	};

	static const SaveLoad _ship_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_SHIP),
		SLE_VEH_INCLUDE(),
		     SLE_VAR(Ship, state, SLE_UINT8),

		SLE_CONDNULL(16, 2, 143), // old reserved space

		     SLE_END()
	};

	static const SaveLoad _aircraft_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_AIRCRAFT),
		SLE_VEH_INCLUDE(),
		     SLE_VAR(Aircraft, crashed_counter,       SLE_UINT16),
		     SLE_VAR(Aircraft, pos,                   SLE_UINT8),

		 SLE_CONDVAR(Aircraft, targetairport,         SLE_FILE_U8  | SLE_VAR_U16,   0, 4),
		 SLE_CONDVAR(Aircraft, targetairport,         SLE_UINT16,                   5, SL_MAX_VERSION),

		     SLE_VAR(Aircraft, state,                 SLE_UINT8),

		 SLE_CONDVAR(Aircraft, previous_pos,          SLE_UINT8,                    2, SL_MAX_VERSION),
		 SLE_CONDVAR(Aircraft, last_direction,        SLE_UINT8,                    2, SL_MAX_VERSION),
		 SLE_CONDVAR(Aircraft, number_consecutive_turns, SLE_UINT8,                 2, SL_MAX_VERSION),

		 SLE_CONDVAR(Aircraft, turn_counter,          SLE_UINT8,                  136, SL_MAX_VERSION),
		 SLE_CONDVAR(Aircraft, flags,                 SLE_UINT8,                  167, SL_MAX_VERSION),

		SLE_CONDNULL(13,                                                           2, 143), // old reserved space

		     SLE_END()
	};

	static const SaveLoad _special_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_EFFECT),

		     SLE_VAR(Vehicle, subtype,               SLE_UINT8),

		 SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_FILE_U8  | SLE_VAR_I32,   0, 163),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_INT32,                  164, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, cur_image,             SLE_FILE_U16 | SLE_VAR_U32),
		SLE_CONDNULL(5,                                                            0,  57),
		     SLE_VAR(Vehicle, progress,              SLE_UINT8),
		     SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),

		     SLE_VAR(EffectVehicle, animation_state,    SLE_UINT16),
		     SLE_VAR(EffectVehicle, animation_substate, SLE_UINT8),

		 SLE_CONDVAR(Vehicle, spritenum,             SLE_UINT8,                    2, SL_MAX_VERSION),

		SLE_CONDNULL(15,                                                           2, 143), // old reserved space

		     SLE_END()
	};

	static const SaveLoad _disaster_desc[] = {
		SLE_WRITEBYTE(Vehicle, type, VEH_DISASTER),

		     SLE_REF(Vehicle, next,                  REF_VEHICLE_OLD),

		     SLE_VAR(Vehicle, subtype,               SLE_UINT8),
		 SLE_CONDVAR(Vehicle, tile,                  SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, tile,                  SLE_UINT32,                   6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, dest_tile,             SLE_FILE_U16 | SLE_VAR_U32,   0,   5),
		 SLE_CONDVAR(Vehicle, dest_tile,             SLE_UINT32,                   6, SL_MAX_VERSION),

		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
		 SLE_CONDVAR(Vehicle, x_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_FILE_I16 | SLE_VAR_I32,   0,   5),
		 SLE_CONDVAR(Vehicle, y_pos,                 SLE_INT32,                    6, SL_MAX_VERSION),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_FILE_U8  | SLE_VAR_I32,   0, 163),
		 SLE_CONDVAR(Vehicle, z_pos,                 SLE_INT32,                  164, SL_MAX_VERSION),
		     SLE_VAR(Vehicle, direction,             SLE_UINT8),

		SLE_CONDNULL(5,                                                            0,  57),
		     SLE_VAR(Vehicle, owner,                 SLE_UINT8),
		     SLE_VAR(Vehicle, vehstatus,             SLE_UINT8),
		 SLE_CONDVAR(Vehicle, current_order.dest,    SLE_FILE_U8 | SLE_VAR_U16,    0,   4),
		 SLE_CONDVAR(Vehicle, current_order.dest,    SLE_UINT16,                   5, SL_MAX_VERSION),

		     SLE_VAR(Vehicle, cur_image,             SLE_FILE_U16 | SLE_VAR_U32),
		 SLE_CONDVAR(Vehicle, age,                   SLE_FILE_U16 | SLE_VAR_I32,   0,  30),
		 SLE_CONDVAR(Vehicle, age,                   SLE_INT32,                   31, SL_MAX_VERSION),
		     SLE_VAR(Vehicle, tick_counter,          SLE_UINT8),

		     SLE_VAR(DisasterVehicle, image_override,            SLE_UINT16),
		     SLE_VAR(DisasterVehicle, big_ufo_destroyer_target,  SLE_UINT16),

		SLE_CONDNULL(16,                                                           2, 143), // old reserved space

		     SLE_END()
	};


	static const SaveLoad * const _veh_descs[] = {
		_train_desc,
		_roadveh_desc,
		_ship_desc,
		_aircraft_desc,
		_special_desc,
		_disaster_desc,
		_common_veh_desc,
	};

	return _veh_descs[vt];
}

/** Will be called when the vehicles need to be saved. */
static void Save_VEHS()
{
	Vehicle *v;
	/* Write the vehicles */
	FOR_ALL_VEHICLES(v) {
		SlSetArrayIndex(v->index);
		SlObject(v, GetVehicleDescription(v->type));
	}
}

/** Will be called when vehicles need to be loaded. */
void Load_VEHS()
{
	int index;

	_cargo_count = 0;

	while ((index = SlIterateArray()) != -1) {
		Vehicle *v;
		VehicleType vtype = (VehicleType)SlReadByte();

		switch (vtype) {
			case VEH_TRAIN:    v = new (index) Train();           break;
			case VEH_ROAD:     v = new (index) RoadVehicle();     break;
			case VEH_SHIP:     v = new (index) Ship();            break;
			case VEH_AIRCRAFT: v = new (index) Aircraft();        break;
			case VEH_EFFECT:   v = new (index) EffectVehicle();   break;
			case VEH_DISASTER: v = new (index) DisasterVehicle(); break;
			case VEH_INVALID: // Savegame shouldn't contain invalid vehicles
			default: SlErrorCorrupt("Invalid vehicle type");
		}

		SlObject(v, GetVehicleDescription(vtype));

		if (_cargo_count != 0 && IsCompanyBuildableVehicleType(v) && CargoPacket::CanAllocateItem()) {
			/* Don't construct the packet with station here, because that'll fail with old savegames */
			CargoPacket *cp = new CargoPacket(_cargo_count, _cargo_days, _cargo_source, _cargo_source_xy, _cargo_loaded_at_xy, _cargo_feeder_share);
			v->cargo.Append(cp);
		}

		/* Old savegames used 'last_station_visited = 0xFF' */
		if (IsSavegameVersionBefore(5) && v->last_station_visited == 0xFF) {
			v->last_station_visited = INVALID_STATION;
		}

		if (IsSavegameVersionBefore(5)) {
			/* Convert the current_order.type (which is a mix of type and flags, because
			 *  in those versions, they both were 4 bits big) to type and flags */
			v->current_order.flags = GB(v->current_order.type, 4, 4);
			v->current_order.type &= 0x0F;
		}

		/* Advanced vehicle lists got added */
		if (IsSavegameVersionBefore(60)) v->group_id = DEFAULT_GROUP;
	}
}

static void Ptrs_VEHS()
{
	Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		SlObject(v, GetVehicleDescription(v->type));
	}
}

extern const ChunkHandler _veh_chunk_handlers[] = {
	{ 'VEHS', Save_VEHS, Load_VEHS, Ptrs_VEHS, NULL, CH_SPARSE_ARRAY | CH_LAST},
};