Handling of trains. More...

#include "stdafx.h"
#include "error.h"
#include "articulated_vehicles.h"
#include "command_func.h"
#include "error_func.h"
#include "pathfinder/yapf/yapf.hpp"
#include "news_func.h"
#include "company_func.h"
#include "newgrf_sound.h"
#include "newgrf_text.h"
#include "strings_func.h"
#include "viewport_func.h"
#include "vehicle_func.h"
#include "sound_func.h"
#include "ai/ai.hpp"
#include "game/game.hpp"
#include "newgrf_station.h"
#include "effectvehicle_func.h"
#include "network/network.h"
#include "spritecache.h"
#include "core/random_func.hpp"
#include "company_base.h"
#include "newgrf.h"
#include "order_backup.h"
#include "zoom_func.h"
#include "newgrf_debug.h"
#include "framerate_type.h"
#include "train_cmd.h"
#include "misc_cmd.h"
#include "timer/timer_game_calendar.h"
#include "timer/timer_game_economy.h"
#include "table/strings.h"
#include "table/train_sprites.h"
#include "safeguards.h"

Data Structures
class	VehicleOrderSaver
	This class will save the current order of a vehicle and restore it on destruction. More...

struct	AccelerationSlowdownParams
	Data structure for storing engine speed changes of an acceleration type. More...

struct	TrainCollideChecker
	Temporary data storage for testing collisions. More...

Typedefs
typedef std::vector< Train * >	TrainList
	Helper type for lists/vectors of trains.

Functions
static Track	ChooseTrainTrack (Train v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool got_reservation, bool mark_stuck)

static bool	TrainCheckIfLineEnds (Train *v, bool reverse)
	Checks for line end. More...

bool	TrainController (Train v, Vehicle nomove, bool reverse)
	Move a vehicle chain one movement stop forwards. More...

static TileIndex	TrainApproachingCrossingTile (const Train *v)
	Determines whether train is approaching a rail-road crossing (thus making it barred) More...

static void	CheckIfTrainNeedsService (Train *v)
	Check whether a train needs service, and if so, find a depot or service it. More...

static void	CheckNextTrainTile (Train *v)
	Check if the train is on the last reserved tile and try to extend the path then. More...

template<>
bool	IsValidImageIndex< VEH_TRAIN > (uint8_t image_index)

uint8_t	FreightWagonMult (CargoID cargo)
	Return the cargo weight multiplier to use for a rail vehicle. More...

void	CheckTrainsLengths ()
	Checks if lengths of all rail vehicles are valid. More...

int	GetTrainStopLocation (StationID station_id, TileIndex tile, const Train v, int station_ahead, int *station_length)
	Get the stop location of (the center) of the front vehicle of a train at a platform of a station. More...

static SpriteID	GetDefaultTrainSprite (uint8_t spritenum, Direction direction)

static void	GetRailIcon (EngineID engine, bool rear_head, int &y, EngineImageType image_type, VehicleSpriteSeq *result)

void	DrawTrainEngine (int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)

void	GetTrainSpriteSize (EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
	Get the size of the sprite of a train sprite heading west, or both heads (used for lists). More...

static CommandCost	CmdBuildRailWagon (DoCommandFlag flags, TileIndex tile, const Engine e, Vehicle *ret)
	Build a railroad wagon. More...

void	NormalizeTrainVehInDepot (const Train *u)
	Move all free vehicles in the depot to the train.

static void	AddRearEngineToMultiheadedTrain (Train *v)

CommandCost	CmdBuildRailVehicle (DoCommandFlag flags, TileIndex tile, const Engine e, Vehicle *ret)
	Build a railroad vehicle. More...

static Train *	FindGoodVehiclePos (const Train *src)

static void	MakeTrainBackup (TrainList &list, Train *t)
	Make a backup of a train into a train list. More...

static void	RestoreTrainBackup (TrainList &list)
	Restore the train from the backup list. More...

static void	RemoveFromConsist (Train *part, bool chain=false)
	Remove the given wagon from its consist. More...

static void	InsertInConsist (Train dst, Train chain)
	Inserts a chain into the train at dst. More...

static void	NormaliseDualHeads (Train *t)
	Normalise the dual heads in the train, i.e. More...

static void	NormaliseSubtypes (Train *chain)
	Normalise the sub types of the parts in this chain. More...

static CommandCost	CheckNewTrain (Train original_dst, Train dst, Train original_src, Train src)
	Check/validate whether we may actually build a new train. More...

static CommandCost	CheckTrainAttachment (Train *t)
	Check whether the train parts can be attached. More...

static CommandCost	ValidateTrains (Train original_dst, Train dst, Train original_src, Train src, bool check_limit)
	Validate whether we are going to create valid trains. More...

static void	ArrangeTrains (Train *dst_head, Train dst, Train *src_head, Train src, bool move_chain)
	Arrange the trains in the wanted way. More...

static void	NormaliseTrainHead (Train *head)
	Normalise the head of the train again, i.e. More...

CommandCost	CmdMoveRailVehicle (DoCommandFlag flags, VehicleID src_veh, VehicleID dest_veh, bool move_chain)
	Move a rail vehicle around inside the depot. More...

CommandCost	CmdSellRailWagon (DoCommandFlag flags, Vehicle *t, bool sell_chain, bool backup_order, ClientID user)
	Sell a (single) train wagon/engine. More...

static void	MarkTrainAsStuck (Train *v)
	Mark a train as stuck and stop it if it isn't stopped right now. More...

static void	SwapTrainFlags (uint16_t swap_flag1, uint16_t swap_flag2)
	Swap the two up/down flags in two ways: More...

static void	UpdateStatusAfterSwap (Train *v)
	Updates some variables after swapping the vehicle. More...

void	ReverseTrainSwapVeh (Train *v, int l, int r)
	Swap vehicles l and r in consist v, and reverse their direction. More...

static Vehicle *	TrainOnTileEnum (Vehicle v, void )
	Check if the vehicle is a train. More...

bool	TrainOnCrossing (TileIndex tile)
	Check if a level crossing tile has a train on it. More...

static Vehicle *	TrainApproachingCrossingEnum (Vehicle v, void data)
	Checks if a train is approaching a rail-road crossing. More...

static bool	TrainApproachingCrossing (TileIndex tile)
	Finds a vehicle approaching rail-road crossing. More...

static bool	CheckLevelCrossing (TileIndex tile)
	Check if a level crossing should be barred. More...

static void	UpdateLevelCrossingTile (TileIndex tile, bool sound, bool force_barred)
	Sets a level crossing tile to the correct state. More...

void	UpdateLevelCrossing (TileIndex tile, bool sound, bool force_bar)
	Update a level crossing to barred or open (crossing may include multiple adjacent tiles). More...

void	MarkDirtyAdjacentLevelCrossingTiles (TileIndex tile, Axis road_axis)
	Find adjacent level crossing tiles in this multi-track crossing and mark them dirty. More...

void	UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval (TileIndex tile, Axis road_axis)
	Update adjacent level crossing tiles in this multi-track crossing, due to removal of a level crossing tile. More...

static void	MaybeBarCrossingWithSound (TileIndex tile)
	Bars crossing and plays ding-ding sound if not barred already. More...

static void	AdvanceWagonsBeforeSwap (Train *v)
	Advances wagons for train reversing, needed for variable length wagons. More...

static void	AdvanceWagonsAfterSwap (Train *v)
	Advances wagons for train reversing, needed for variable length wagons. More...

static bool	IsWholeTrainInsideDepot (const Train *v)

void	ReverseTrainDirection (Train *v)
	Turn a train around. More...

CommandCost	CmdReverseTrainDirection (DoCommandFlag flags, VehicleID veh_id, bool reverse_single_veh)
	Reverse train. More...

CommandCost	CmdForceTrainProceed (DoCommandFlag flags, VehicleID veh_id)
	Force a train through a red signal. More...

static FindDepotData	FindClosestTrainDepot (Train *v, int max_distance)
	Try to find a depot nearby. More...

static bool	CheckTrainStayInDepot (Train *v)
	Will the train stay in the depot the next tick? More...

static void	ClearPathReservation (const Train *v, TileIndex tile, Trackdir track_dir)
	Clear the reservation of tile that was just left by a wagon on track_dir. More...

void	FreeTrainTrackReservation (const Train *v)
	Free the reserved path in front of a vehicle. More...

static Track	DoTrainPathfind (const Train v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo dest, TileIndex *final_dest)
	Perform pathfinding for a train. More...

static PBSTileInfo	ExtendTrainReservation (const Train v, TrackBits new_tracks, DiagDirection *enterdir)
	Extend a train path as far as possible. More...

static bool	TryReserveSafeTrack (const Train *v, TileIndex tile, Trackdir td, bool override_railtype)
	Try to reserve any path to a safe tile, ignoring the vehicle's destination. More...

bool	TryPathReserve (Train *v, bool mark_as_stuck, bool first_tile_okay)
	Try to reserve a path to a safe position. More...

static bool	CheckReverseTrain (const Train *v)

static void	TrainEnterStation (Train *v, StationID station)
	Trains enters a station, send out a news item if it is the first train, and start loading. More...

static bool	CheckCompatibleRail (const Train *v, TileIndex tile)

static void	AffectSpeedByZChange (Train *v, int old_z)
	Modify the speed of the vehicle due to a change in altitude. More...

static bool	TrainMovedChangeSignals (TileIndex tile, DiagDirection dir)

static uint	TrainCrashed (Train *v)
	Marks train as crashed and creates an AI event. More...

static Vehicle *	FindTrainCollideEnum (Vehicle v, void data)
	Collision test function. More...

static bool	CheckTrainCollision (Train *v)
	Checks whether the specified train has a collision with another vehicle. More...

static Vehicle *	CheckTrainAtSignal (Vehicle v, void data)

static Vehicle *	CollectTrackbitsFromCrashedVehiclesEnum (Vehicle v, void data)
	Collect trackbits of all crashed train vehicles on a tile. More...

static bool	IsRailStationPlatformOccupied (TileIndex tile)

static void	DeleteLastWagon (Train *v)
	Deletes/Clears the last wagon of a crashed train. More...

static void	ChangeTrainDirRandomly (Train *v)
	Rotate all vehicles of a (crashed) train chain randomly to animate the crash. More...

static bool	HandleCrashedTrain (Train *v)
	Handle a crashed train. More...

static bool	TrainApproachingLineEnd (Train *v, bool signal, bool reverse)
	Train is approaching line end, slow down and possibly reverse. More...

static bool	TrainCanLeaveTile (const Train *v)
	Determines whether train would like to leave the tile. More...

static bool	TrainLocoHandler (Train *v, bool mode)

Variables
static const uint8_t	_vehicle_initial_x_fract [4] = {10, 8, 4, 8}

static const uint8_t	_vehicle_initial_y_fract [4] = { 8, 4, 8, 10}

static const uint8_t	_initial_tile_subcoord [6][4][3]

static const AccelerationSlowdownParams	_accel_slowdown []
	Speed update fractions for each acceleration type. More...

static const uint16_t	_breakdown_speeds [16]
	Maximum speeds for train that is broken down or approaching line end. More...

Detailed Description

Handling of trains.

Definition in file train_cmd.cpp.

Function Documentation

◆ AdvanceWagonsAfterSwap()

static void AdvanceWagonsAfterSwap ( Train * v )

static

Advances wagons for train reversing, needed for variable length wagons.

This one is called after the train is reversed.

Parameters

v	First vehicle in chain

Definition at line 1902 of file train_cmd.cpp.

References GetRailDepotTrack(), SpecializedVehicle< T, Type >::Last(), SpecializedVehicle< T, Type >::Next(), TicksToLeaveDepot(), Vehicle::tile, TRACK_BIT_DEPOT, TrackToTrackBits(), TrainController(), Vehicle::vehstatus, and VS_HIDDEN.

◆ AdvanceWagonsBeforeSwap()

static void AdvanceWagonsBeforeSwap ( Train * v )

static

Advances wagons for train reversing, needed for variable length wagons.

This one is called before the train is reversed.

Parameters

v	First vehicle in chain

Definition at line 1874 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::Last().

◆ AffectSpeedByZChange()

static void AffectSpeedByZChange	(	Train *	v,
		int	old_z
	)

inlinestatic

Modify the speed of the vehicle due to a change in altitude.

Parameters

v	Train to update.
old_z	Previous height.

Definition at line 3059 of file train_cmd.cpp.

References _settings_game, VehicleSettings::train_acceleration_model, GameSettings::vehicle, and Vehicle::z_pos.

◆ ArrangeTrains()

static void ArrangeTrains	(	Train **	dst_head,
		Train *	dst,
		Train **	src_head,
		Train *	src,
		bool	move_chain
	)

static

Arrange the trains in the wanted way.

Parameters

dst_head	The destination chain of the to be moved vehicle.
dst	The destination for the to be moved vehicle.
src_head	The source chain of the to be moved vehicle.
src	The to be moved vehicle.
move_chain	Whether to move all vehicles after src or not.

Definition at line 1122 of file train_cmd.cpp.

References Train::GetNextUnit(), SpecializedVehicle< T, Type >::GetNextVehicle(), InsertInConsist(), GroundVehicle< T, Type >::IsMultiheaded(), NormaliseDualHeads(), and RemoveFromConsist().

Referenced by CmdSellRailWagon().

◆ ChangeTrainDirRandomly()

static void ChangeTrainDirRandomly ( Train * v )

static

Rotate all vehicles of a (crashed) train chain randomly to animate the crash.

Parameters

v	First crashed vehicle.

Definition at line 3707 of file train_cmd.cpp.

References ChangeDir(), DIRDIFF_45LEFT, DIRDIFF_45RIGHT, DIRDIFF_SAME, Vehicle::direction, GB(), Vehicle::vehstatus, and VS_HIDDEN.

◆ CheckIfTrainNeedsService()

static void CheckIfTrainNeedsService ( Train * v )

static

Check whether a train needs service, and if so, find a depot or service it.

Returns: v Train to check.

Definition at line 4138 of file train_cmd.cpp.

References _settings_game, FindDepotData::best_length, Vehicle::current_order, FindClosestTrainDepot(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::Get(), GroundVehicle< T, Type >::IsChainInDepot(), Order::IsType(), YAPFSettings::maximum_go_to_depot_penalty, Vehicle::NeedsAutomaticServicing(), Vehicle::owner, GameSettings::pf, VehicleServiceInDepot(), and PathfinderSettings::yapf.

◆ CheckLevelCrossing()

static bool CheckLevelCrossing ( TileIndex tile )

inlinestatic

Check if a level crossing should be barred.

Parameters

tile	The tile to check.

Returns: True if the crossing should be barred, else false.

Definition at line 1738 of file train_cmd.cpp.

References HasCrossingReservation(), TrainApproachingCrossing(), and TrainOnCrossing().

Referenced by UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval(), UpdateLevelCrossing(), and UpdateLevelCrossingTile().

◆ CheckNewTrain()

static CommandCost CheckNewTrain	(	Train *	original_dst,
		Train *	dst,
		Train *	original_src,
		Train *	src
	)

static

Check/validate whether we may actually build a new train.

Note: All vehicles are/were 'heads' of their chains.

Parameters

original_dst	The original destination chain.
dst	The destination chain after constructing the train.
original_src	The original source chain.
src	The source chain after constructing the train.

Returns: possible error of this command.

Definition at line 969 of file train_cmd.cpp.

References _settings_game, GetFreeUnitNumber(), GroundVehicle< T, Type >::IsEngine(), VehicleSettings::max_trains, return_cmd_error, VEH_TRAIN, and GameSettings::vehicle.

Referenced by ValidateTrains().

◆ CheckNextTrainTile()

static void CheckNextTrainTile ( Train * v )

static

Check if the train is on the last reserved tile and try to extend the path then.

Parameters

v	Train that needs its path extended.

Definition at line 2201 of file train_cmd.cpp.

References _settings_game, Vehicle::current_order, Order::GetType(), PathfinderSettings::path_backoff_interval, GameSettings::pf, and TRACK_BIT_DEPOT.

◆ CheckTrainAttachment()

static CommandCost CheckTrainAttachment ( Train * t )

static

Check whether the train parts can be attached.

Parameters

t	the train to check

Returns: possible error of this command.

Definition at line 993 of file train_cmd.cpp.

References _settings_game, GroundVehicleCache::cached_veh_length, GroundVehicleCache::first_engine, GroundVehicle< T, Type >::gcache, INVALID_ENGINE, Vehicle::InvalidateNewGRFCache(), Vehicle::IsArticulatedPart(), GroundVehicle< T, Type >::IsEngine(), GroundVehicle< T, Type >::IsRearDualheaded(), VehicleSettings::max_train_length, SpecializedVehicle< T, Type >::Next(), return_cmd_error, Vehicle::SetNext(), TILE_SIZE, and GameSettings::vehicle.

Referenced by ValidateTrains().

◆ CheckTrainCollision()

static bool CheckTrainCollision ( Train * v )

static

Checks whether the specified train has a collision with another vehicle.

If so, destroys this vehicle, and the other vehicle if its subtype has TS_Front. Reports the incident in a flashy news item, modifies station ratings and plays a sound.

Parameters

v	Train to test.

Definition at line 3226 of file train_cmd.cpp.

References FindTrainCollideEnum(), FindVehicleOnPos(), FindVehicleOnPosXY(), GetOtherTunnelBridgeEnd(), TrainCollideChecker::num, SetDParam(), Vehicle::tile, TileVirtXY(), TRACK_BIT_DEPOT, TRACK_BIT_WORMHOLE, TrainCollideChecker::v, Vehicle::x_pos, and Vehicle::y_pos.

◆ CheckTrainsLengths()

void CheckTrainsLengths ( )

Checks if lengths of all rail vehicles are valid.

If not, shows an error message.

Definition at line 76 of file train_cmd.cpp.

References _networking, abs(), INVALID_STRING_ID, SpecializedVehicle< T, Type >::Iterate(), SpecializedVehicle< T, Type >::Next(), PM_PAUSED_ERROR, SetDParam(), ShowErrorMessage(), TicksToLeaveDepot(), TRACK_BIT_DEPOT, VS_CRASHED, and WL_CRITICAL.

◆ CheckTrainStayInDepot()

static bool CheckTrainStayInDepot ( Train * v )

static

Will the train stay in the depot the next tick?

Parameters

v	Train to check.

Returns: True if it stays in the depot, false otherwise.

Definition at line 2263 of file train_cmd.cpp.

References _settings_game, GroundVehicleCache::cached_power, Vehicle::current_order, GroundVehicle< T, Type >::gcache, HasDepotReservation(), INVALID_DIAGDIR, Order::IsType(), Vehicle::IsWaitingForUnbunching(), SpecializedVehicle< T, Type >::Next(), Vehicle::owner, GameSettings::pf, PathfinderSettings::reserve_paths, SetWindowClassesDirty(), SetWindowDirty(), SIGSEG_FULL, SIGSEG_PBS, TFP_NONE, Vehicle::tile, TRACK_BIT_DEPOT, UpdateSignalsOnSegment(), Vehicle::vehstatus, VS_STOPPED, Train::wait_counter, WC_TRAINS_LIST, and WC_VEHICLE_DEPOT.

◆ ClearPathReservation()

static void ClearPathReservation	(	const Train *	v,
		TileIndex	tile,
		Trackdir	track_dir
	)

static

Clear the reservation of tile that was just left by a wagon on track_dir.

Parameters

v	Train owning the reservation.
tile	Tile with reservation to clear.
track_dir	Track direction to clear.

Definition at line 2345 of file train_cmd.cpp.

References _settings_client, GetOtherTunnelBridgeEnd(), GetTunnelBridgeDirection(), ClientSettings::gui, IsBridge(), IsCompatibleTrainStationTile(), IsRailStationTile(), IsTileType(), MarkBridgeDirty(), MarkTileDirtyByTile(), MP_TUNNELBRIDGE, ReverseDiagDir(), SetRailStationPlatformReservation(), SetTunnelBridgeReservation(), GUISettings::show_track_reservation, TileAddByDiagDir(), TrackdirToExitdir(), TrackdirToTrack(), TunnelBridgeIsFree(), and UnreserveRailTrack().

Referenced by Train::Crash().

◆ CmdBuildRailVehicle()

CommandCost CmdBuildRailVehicle	(	DoCommandFlag	flags,
		TileIndex	tile,
		const Engine *	e,
		Vehicle **	ret
	)

Build a railroad vehicle.

Parameters

	flags	type of operation.
	tile	tile of the depot where rail-vehicle is built.
	e	the engine to build.
[out]	ret	the vehicle that has been built.

Returns: the cost of this operation or an error.

Definition at line 750 of file train_cmd.cpp.

References CMD_ERROR, CmdBuildRailWagon(), DC_EXEC, GetRailDepotDirection(), GetRailType(), HasPowerOnRail(), RailVehicleInfo::railtype, and RAILVEH_WAGON.

◆ CmdBuildRailWagon()

static CommandCost CmdBuildRailWagon	(	DoCommandFlag	flags,
		TileIndex	tile,
		const Engine *	e,
		Vehicle **	ret
	)

static

Build a railroad wagon.

Parameters

	flags	type of operation.
	tile	tile of the depot where rail-vehicle is built.
	e	the engine to build.
[out]	ret	the vehicle that has been built.

Returns: the cost of this operation or an error.

< Same depot

< A free wagon chain

< Same type

< Don't connect to ourself

< Not crashed/flooded

Definition at line 616 of file train_cmd.cpp.

References CMD_ERROR, DC_EXEC, DiagDirToDir(), Vehicle::direction, Vehicle::engine_type, GroundVehicleCache::first_engine, GroundVehicle< T, Type >::gcache, GetRailDepotDirection(), GetRailType(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, INVALID_ENGINE, IsCompatibleRail(), RailVehicleInfo::railtype, Vehicle::spritenum, and Vehicle::tile.

Referenced by CmdBuildRailVehicle().

◆ CmdForceTrainProceed()

CommandCost CmdForceTrainProceed	(	DoCommandFlag	flags,
		VehicleID	veh_id
	)

Force a train through a red signal.

Parameters

flags	type of operation
veh_id	train to ignore the red signal

Returns: the cost of this operation or an error

Definition at line 2132 of file train_cmd.cpp.

References CheckOwnership(), CMD_ERROR, DC_EXEC, CommandCost::Failed(), SpecializedVehicle< T, Type >::GetIfValid(), HasBit(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, GroundVehicle< T, Type >::IsChainInDepot(), Train::IsPrimaryVehicle(), Vehicle::owner, BaseConsist::ResetDepotUnbunching(), SetWindowDirty(), TFP_NONE, TFP_SIGNAL, TFP_STUCK, VRF_TRAIN_STUCK, and WC_VEHICLE_VIEW.

◆ CmdMoveRailVehicle()

CommandCost CmdMoveRailVehicle	(	DoCommandFlag	flags,
		VehicleID	src_veh,
		VehicleID	dest_veh,
		bool	move_chain
	)

Move a rail vehicle around inside the depot.

Parameters

flags	type of operation Note: DC_AUTOREPLACE is set when autoreplace tries to undo its modifications or moves vehicles to temporary locations inside the depot.
src_veh	source vehicle index
dest_veh	what wagon to put the source wagon AFTER, XXX - INVALID_VEHICLE to make a new line
move_chain	move all vehicles following the source vehicle

Returns: the cost of this operation or an error

Definition at line 1193 of file train_cmd.cpp.

References CheckOwnership(), CMD_ERROR, DC_AUTOREPLACE, CommandCost::Failed(), SpecializedVehicle< T, Type >::GetIfValid(), INVALID_VEHICLE, GroundVehicle< T, Type >::IsEngine(), Vehicle::owner, Vehicle::vehstatus, and VS_CRASHED.

◆ CmdReverseTrainDirection()

CommandCost CmdReverseTrainDirection	(	DoCommandFlag	flags,
		VehicleID	veh_id,
		bool	reverse_single_veh
	)

Reverse train.

Parameters

flags	type of operation
veh_id	train to reverse
reverse_single_veh	if true, reverse a unit in a train (needs to be in a depot)

Returns: the cost of this operation or an error

Definition at line 2059 of file train_cmd.cpp.

References CheckOwnership(), CMD_ERROR, CommandCost::Failed(), SpecializedVehicle< T, Type >::GetIfValid(), HasBit(), GroundVehicle< T, Type >::IsMultiheaded(), and Vehicle::owner.

◆ CmdSellRailWagon()

CommandCost CmdSellRailWagon	(	DoCommandFlag	flags,
		Vehicle *	t,
		bool	sell_chain,
		bool	backup_order,
		ClientID	user
	)

Sell a (single) train wagon/engine.

Parameters

flags	type of operation
t	the train wagon to sell
sell_chain	the selling mode sell_chain = false: only sell the single dragged wagon/engine (and any belonging rear-engines) sell_chain = true: sell the vehicle and all vehicles following it in the chain if the wagon is dragged, don't delete the possibly belonging rear-engine to some front
backup_order	make order backup?
user	the user for the order backup.

Returns: the cost of this operation or an error

Definition at line 1391 of file train_cmd.cpp.

References CommandCost::AddCost(), Vehicle::AddToShared(), ArrangeTrains(), OrderBackup::Backup(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_orderlist_pool >::CanAllocateItem(), Vehicle::CopyVehicleConfigAndStatistics(), GroupStatistics::CountVehicle(), DC_AUTOREPLACE, DC_EXEC, DeleteVehicleOrders(), EXPENSES_NEW_VEHICLES, CommandCost::Failed(), SpecializedVehicle< T, Type >::First(), SpecializedVehicle< T, Type >::From(), InvalidateWindowClassesData(), InvalidateWindowData(), GroundVehicle< T, Type >::IsEngine(), Vehicle::IsFrontEngine(), Train::IsPrimaryVehicle(), GroundVehicle< T, Type >::IsRearDualheaded(), MakeTrainBackup(), SpecializedVehicle< T, Type >::Next(), NormaliseSubtypes(), NormaliseTrainHead(), Vehicle::orders, RestoreTrainBackup(), return_cmd_error, Vehicle::tile, ValidateTrains(), WC_TRAINS_LIST, and WC_VEHICLE_DEPOT.

Referenced by CmdSellVehicle().

◆ CollectTrackbitsFromCrashedVehiclesEnum()

static Vehicle* CollectTrackbitsFromCrashedVehiclesEnum	(	Vehicle *	v,
		void *	data
	)

static

Collect trackbits of all crashed train vehicles on a tile.

Parameters

v	Vehicle passed from Find/HasVehicleOnPos()
data	trackdirbits for the result

Returns: nullptr to iterate over all vehicles on the tile.

Definition at line 3599 of file train_cmd.cpp.

References DiagDirToDiagTrackBits(), SpecializedVehicle< T, Type >::From(), GetTunnelBridgeDirection(), Vehicle::tile, TRACK_BIT_DEPOT, TRACK_BIT_WORMHOLE, BaseVehicle::type, VEH_TRAIN, Vehicle::vehstatus, and VS_CRASHED.

Referenced by DeleteLastWagon().

◆ DeleteLastWagon()

static void DeleteLastWagon ( Train * v )

static

Deletes/Clears the last wagon of a crashed train.

It takes the engine of the train, then goes to the last wagon and deletes that. Each call to this function will remove the last wagon of a crashed train. If this wagon was on a crossing, or inside a tunnel/bridge, recalculate the signals as they might need updating

Parameters

v	the Vehicle of which last wagon is to be removed

Definition at line 3637 of file train_cmd.cpp.

References CCF_ARRANGE, CollectTrackbitsFromCrashedVehiclesEnum(), Train::ConsistChanged(), DiagDirToDiagTrackBits(), FindVehicleOnPos(), SpecializedVehicle< T, Type >::First(), GetTunnelBridgeDirection(), HasReservedTracks(), Vehicle::last_station_visited, SpecializedVehicle< T, Type >::Next(), Vehicle::owner, Vehicle::SetNext(), SetWindowDirty(), Vehicle::tile, TRACK_BEGIN, TRACK_BIT_DEPOT, TRACK_BIT_NONE, TRACK_BIT_WORMHOLE, TRACK_X, TRACK_Y, TrackBitsToTrack(), UnreserveRailTrack(), and WC_VEHICLE_DEPOT.

◆ DoTrainPathfind()

static Track DoTrainPathfind	(	const Train *	v,
		TileIndex	tile,
		DiagDirection	enterdir,
		TrackBits	tracks,
		bool &	path_found,
		bool	do_track_reservation,
		PBSTileInfo *	dest,
		TileIndex *	final_dest
	)

static

Perform pathfinding for a train.

Parameters

	v	The train
	tile	The tile the train is about to enter
	enterdir	Diagonal direction the train is coming from
	tracks	Usable tracks on the new tile
[out]	path_found	Whether a path has been found or not.
	do_track_reservation	Path reservation is requested
[out]	dest	State and destination of the requested path
[out]	final_dest	Final tile of the best path found

Returns: The best track the train should follow

Definition at line 2469 of file train_cmd.cpp.

References INVALID_TILE, and YapfTrainChooseTrack().

◆ ExtendTrainReservation()

static PBSTileInfo ExtendTrainReservation	(	const Train *	v,
		TrackBits *	new_tracks,
		DiagDirection *	enterdir
	)

static

Extend a train path as far as possible.

Stops on encountering a safe tile, another reservation or a track choice.

Returns: INVALID_TILE indicates that the reservation failed.

Definition at line 2480 of file train_cmd.cpp.

◆ FindClosestTrainDepot()

static FindDepotData FindClosestTrainDepot	(	Train *	v,
		int	max_distance
	)

static

Try to find a depot nearby.

Parameters

v	Train that wants a depot.
max_distance	Maximal search distance.

Returns: Information where the closest train depot is located.

Precondition: The given vehicle must not be crashed!

Definition at line 2166 of file train_cmd.cpp.

References Vehicle::vehstatus, VS_CRASHED, and YapfTrainFindNearestDepot().

Referenced by CheckIfTrainNeedsService(), and Train::FindClosestDepot().

◆ FindTrainCollideEnum()

static Vehicle* FindTrainCollideEnum	(	Vehicle *	v,
		void *	data
	)

static

Collision test function.

Parameters

v	Train vehicle to test collision with.
data	Train being examined.

Returns: nullptr (always continue search)

Definition at line 3179 of file train_cmd.cpp.

References abs(), GroundVehicleCache::cached_veh_length, SpecializedVehicle< T, Type >::From(), GroundVehicle< T, Type >::gcache, TrainCollideChecker::num, Vehicle::owner, TRACK_BIT_DEPOT, TrainCrashed(), BaseVehicle::type, TrainCollideChecker::v, VEH_TRAIN, Vehicle::x_pos, Vehicle::y_pos, and Vehicle::z_pos.

Referenced by CheckTrainCollision().

◆ FreeTrainTrackReservation()

void FreeTrainTrackReservation ( const Train * v )

Free the reserved path in front of a vehicle.

Parameters

v	Train owning the reserved path.

Definition at line 2386 of file train_cmd.cpp.

References GetStationIndex(), Train::GetVehicleTrackdir(), Vehicle::IsFrontEngine(), IsRailStationTile(), IsTileType(), MP_TUNNELBRIDGE, and Vehicle::tile.

Referenced by CmdConvertRail(), Train::Crash(), and FreeTrainReservation().

◆ FreightWagonMult()

uint8_t FreightWagonMult ( CargoID cargo )

Return the cargo weight multiplier to use for a rail vehicle.

Parameters

cargo Cargo type to get multiplier for

Returns: Cargo weight multiplier

Definition at line 69 of file train_cmd.cpp.

References _settings_game, VehicleSettings::freight_trains, CargoSpec::Get(), and GameSettings::vehicle.

◆ GetTrainSpriteSize()

void GetTrainSpriteSize	(	EngineID	engine,
		uint &	width,
		uint &	height,
		int &	xoffs,
		int &	yoffs,
		EngineImageType	image_type
	)

Get the size of the sprite of a train sprite heading west, or both heads (used for lists).

Parameters

	engine	The engine to get the sprite from.
[out]	width	The width of the sprite.
[out]	height	The height of the sprite.
[out]	xoffs	Number of pixels to shift the sprite to the right.
[out]	yoffs	Number of pixels to shift the sprite downwards.
	image_type	Context the sprite is used in.

Definition at line 581 of file train_cmd.cpp.

◆ GetTrainStopLocation()

int GetTrainStopLocation	(	StationID	station_id,
		TileIndex	tile,
		const Train *	v,
		int *	station_ahead,
		int *	station_length
	)

Get the stop location of (the center) of the front vehicle of a train at a platform of a station.

Parameters

station_id	the ID of the station where we're stopping
tile	the tile where the vehicle currently is
v	the vehicle to get the stop location of
station_ahead	'return' the amount of 1/16th tiles in front of the train
station_length	'return' the station length in 1/16th tiles

Returns: the location, calculated from the begin of the station to stop at.

Definition at line 263 of file train_cmd.cpp.

References GroundVehicleCache::cached_total_length, Vehicle::current_order, Vehicle::direction, DirToDiagDir(), GroundVehicle< T, Type >::gcache, SpecializedStation< Station, false >::Get(), Station::GetPlatformLength(), Order::IsType(), OSL_PLATFORM_FAR_END, OSL_PLATFORM_MIDDLE, and TILE_SIZE.

◆ HandleCrashedTrain()

static bool HandleCrashedTrain ( Train * v )

static

Handle a crashed train.

Parameters

v	First train vehicle.

Returns: Vehicle chain still exists.

Definition at line 3735 of file train_cmd.cpp.

References Chance16R(), Train::crash_anim_pos, CreateEffectVehicleRel(), EV_EXPLOSION_LARGE, Vehicle::vehstatus, and VS_HIDDEN.

◆ InsertInConsist()

static void InsertInConsist	(	Train *	dst,
		Train *	chain
	)

static

Inserts a chain into the train at dst.

Parameters

dst	the place where to append after.
chain	the chain to actually add.

Definition at line 901 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::Last(), SpecializedVehicle< T, Type >::Next(), and Vehicle::SetNext().

Referenced by ArrangeTrains(), and NormaliseDualHeads().

◆ MakeTrainBackup()

static void MakeTrainBackup	(	TrainList &	list,
		Train *	t
	)

static

Make a backup of a train into a train list.

Parameters

list	to make the backup in
t	the train to make the backup of

Definition at line 852 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::Next().

Referenced by CmdSellRailWagon().

◆ MarkDirtyAdjacentLevelCrossingTiles()

void MarkDirtyAdjacentLevelCrossingTiles	(	TileIndex	tile,
		Axis	road_axis
	)

Find adjacent level crossing tiles in this multi-track crossing and mark them dirty.

Parameters

tile	The tile which causes the update.
road_axis	The road axis.

Definition at line 1805 of file train_cmd.cpp.

References AxisToDiagDir(), GetCrossingRoadAxis(), IsLevelCrossingTile(), MarkTileDirtyByTile(), ReverseDiagDir(), Map::Size(), and TileAddByDiagDir().

◆ MarkTrainAsStuck()

static void MarkTrainAsStuck ( Train * v )

static

Mark a train as stuck and stop it if it isn't stopped right now.

Parameters

v	Train to mark as being stuck.

Definition at line 1541 of file train_cmd.cpp.

References Vehicle::cur_speed, HasBit(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, SetBit(), GroundVehicle< T, Type >::SetLastSpeed(), SetWindowWidgetDirty(), Vehicle::subspeed, VRF_TRAIN_STUCK, Train::wait_counter, WC_VEHICLE_VIEW, and WID_VV_START_STOP.

Referenced by TryPathReserve().

◆ MaybeBarCrossingWithSound()

static void MaybeBarCrossingWithSound ( TileIndex tile )

inlinestatic

Bars crossing and plays ding-ding sound if not barred already.

Parameters

tile	tile with crossing

Precondition: tile is a rail-road crossing

Definition at line 1860 of file train_cmd.cpp.

References IsCrossingBarred(), SetCrossingReservation(), and UpdateLevelCrossing().

◆ NormaliseDualHeads()

static void NormaliseDualHeads ( Train * t )

static

Normalise the dual heads in the train, i.e.

if one is missing move that one to this train.

Parameters

t	the train to normalise.

Definition at line 915 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::GetNextVehicle(), InsertInConsist(), GroundVehicle< T, Type >::IsEngine(), GroundVehicle< T, Type >::IsMultiheaded(), SpecializedVehicle< T, Type >::Next(), and RemoveFromConsist().

Referenced by ArrangeTrains().

◆ NormaliseSubtypes()

static void NormaliseSubtypes ( Train * chain )

static

Normalise the sub types of the parts in this chain.

Parameters

chain the chain to normalise.

Definition at line 937 of file train_cmd.cpp.

References GroundVehicle< T, Type >::ClearFreeWagon(), GroundVehicle< T, Type >::ClearFrontEngine(), GroundVehicle< T, Type >::IsEngine(), GroundVehicle< T, Type >::IsWagon(), SpecializedVehicle< T, Type >::Next(), SpecializedVehicle< T, Type >::Previous(), GroundVehicle< T, Type >::SetFreeWagon(), and GroundVehicle< T, Type >::SetFrontEngine().

Referenced by CmdSellRailWagon().

◆ NormaliseTrainHead()

static void NormaliseTrainHead ( Train * head )

static

Normalise the head of the train again, i.e.

that is tell the world that we have changed and update all kinds of variables.

Parameters

head	the train to update.

Definition at line 1163 of file train_cmd.cpp.

References CCF_ARRANGE, Train::ConsistChanged(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::Get(), GetFreeUnitNumber(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, InvalidateWindowData(), Vehicle::IsFrontEngine(), Vehicle::owner, SetWindowWidgetDirty(), BaseVehicle::type, Vehicle::unitnumber, UpdateTrainGroupID(), VEH_TRAIN, VIWD_CONSIST_CHANGED, WC_VEHICLE_REFIT, WC_VEHICLE_VIEW, and WID_VV_REFIT.

Referenced by CmdSellRailWagon().

◆ RemoveFromConsist()

static void RemoveFromConsist	(	Train *	part,
		bool	chain = `false`
	)

static

Remove the given wagon from its consist.

Parameters

part	the part of the train to remove.
chain	whether to remove the whole chain.

Definition at line 884 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::GetLastEnginePart(), SpecializedVehicle< T, Type >::Last(), SpecializedVehicle< T, Type >::Next(), SpecializedVehicle< T, Type >::Previous(), and Vehicle::SetNext().

Referenced by ArrangeTrains(), and NormaliseDualHeads().

◆ RestoreTrainBackup()

static void RestoreTrainBackup ( TrainList & list )

static

Restore the train from the backup list.

Parameters

list	the train to restore.

Definition at line 861 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::Previous(), and Vehicle::SetNext().

Referenced by CmdSellRailWagon().

◆ ReverseTrainDirection()

void ReverseTrainDirection ( Train * v )

Turn a train around.

Parameters

v	Train to turn around.

Definition at line 1967 of file train_cmd.cpp.

References IsRailDepotTile(), and Vehicle::tile.

◆ ReverseTrainSwapVeh()

void ReverseTrainSwapVeh	(	Train *	v,
		int	l,
		int	r
	)

Swap vehicles l and r in consist v, and reverse their direction.

Parameters

v	Consist to change.
l	Vehicle index in the consist of the first vehicle.
r	Vehicle index in the consist of the second vehicle.

Definition at line 1630 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::Next().

◆ SwapTrainFlags()

static void SwapTrainFlags	(	uint16_t *	swap_flag1,
		uint16_t *	swap_flag2
	)

static

Swap the two up/down flags in two ways:

Swap values of swap_flag1 and swap_flag2, and
If going up previously (GVF_GOINGUP_BIT set), the GVF_GOINGDOWN_BIT is set, and vice versa.
Parameters

[in,out] swap_flag1 First train flag.

[in,out] swap_flag2 Second train flag.

Definition at line 1565 of file train_cmd.cpp.

◆ TrainApproachingCrossing()

static bool TrainApproachingCrossing ( TileIndex tile )

static

Finds a vehicle approaching rail-road crossing.

Parameters

tile	tile to test

Returns: true if a vehicle is approaching the crossing

Precondition: tile is a rail-road crossing

Definition at line 1718 of file train_cmd.cpp.

References AxisToDiagDir(), GetCrossingRailAxis(), HasVehicleOnPos(), IsLevelCrossingTile(), ReverseDiagDir(), TileOffsByDiagDir(), and TrainApproachingCrossingEnum().

Referenced by CheckLevelCrossing().

◆ TrainApproachingCrossingEnum()

static Vehicle* TrainApproachingCrossingEnum	(	Vehicle *	v,
		void *	data
	)

static

Checks if a train is approaching a rail-road crossing.

Parameters

v	vehicle on tile
data	tile with crossing we are testing

Returns: v if it is approaching a crossing, nullptr otherwise

Definition at line 1697 of file train_cmd.cpp.

References SpecializedVehicle< T, Type >::From(), Vehicle::IsFrontEngine(), TrainApproachingCrossingTile(), BaseVehicle::type, VEH_TRAIN, Vehicle::vehstatus, and VS_CRASHED.

Referenced by TrainApproachingCrossing().

◆ TrainApproachingCrossingTile()

static TileIndex TrainApproachingCrossingTile ( const Train * v )

static

Determines whether train is approaching a rail-road crossing (thus making it barred)

Parameters

v	front engine of train

Returns: TileIndex of crossing the train is approaching, else INVALID_TILE

Precondition: v in non-crashed front engine

Definition at line 3862 of file train_cmd.cpp.

References DiagDirToAxis(), Vehicle::direction, GetCrossingRoadAxis(), INVALID_TILE, Vehicle::IsFrontEngine(), IsLevelCrossingTile(), Vehicle::tile, TileOffsByDiagDir(), TrainCanLeaveTile(), VehicleExitDir(), Vehicle::vehstatus, and VS_CRASHED.

Referenced by Train::Crash(), and TrainApproachingCrossingEnum().

◆ TrainApproachingLineEnd()

static bool TrainApproachingLineEnd	(	Train *	v,
		bool	signal,
		bool	reverse
	)

static

Train is approaching line end, slow down and possibly reverse.

Parameters

v	front train engine
signal	not line end, just a red signal
reverse	Set to false to not execute the vehicle reversing. This does not change any other logic.

Returns: true iff we did NOT have to reverse

Definition at line 3787 of file train_cmd.cpp.

◆ TrainCanLeaveTile()

static bool TrainCanLeaveTile ( const Train * v )

static

Determines whether train would like to leave the tile.

Parameters

v	train to test

Returns: true iff vehicle is NOT entering or inside a depot or tunnel/bridge

Definition at line 3832 of file train_cmd.cpp.

References DiagDirToDir(), Vehicle::direction, GetRailDepotDirection(), GetTunnelBridgeDirection(), IsRailDepotTile(), IsTileType(), MP_TUNNELBRIDGE, ReverseDiagDir(), Vehicle::tile, TRACK_BIT_DEPOT, and TRACK_BIT_WORMHOLE.

Referenced by TrainApproachingCrossingTile().

◆ TrainCheckIfLineEnds()

static bool TrainCheckIfLineEnds	(	Train *	v,
		bool	reverse
	)

static

Checks for line end.

Also, bars crossing at next tile if needed

Parameters

v	vehicle we are checking
reverse	Set to false to not execute the vehicle reversing. This does not change any other logic.

Returns: true iff we did NOT have to reverse

Definition at line 3889 of file train_cmd.cpp.

References Vehicle::breakdown_ctr, Vehicle::vehstatus, and VS_TRAIN_SLOWING.

Referenced by TrainController().

◆ TrainController()

bool TrainController	(	Train *	v,
		Vehicle *	nomove,
		bool	reverse
	)

Move a vehicle chain one movement stop forwards.

Parameters

v	First vehicle to move.
nomove	Stop moving this and all following vehicles.
reverse	Set to false to not execute the vehicle reversing. This does not change any other logic.

Returns: True if the vehicle could be moved forward, false otherwise.

Definition at line 3278 of file train_cmd.cpp.

References DIAGDIR_BEGIN, DiagdirBetweenTiles(), DiagdirReachesTrackdirs(), FindFirstTrack(), SpecializedVehicle< T, Type >::First(), GetNewVehiclePos(), GetTileRailType(), GetTileTrackStatus(), HasBit(), Vehicle::IsFrontEngine(), IsValidDiagDirection(), GetNewVehiclePosResult::new_tile, SpecializedVehicle< T, Type >::Next(), GetNewVehiclePosResult::old_tile, SpecializedVehicle< T, Type >::Previous(), Rail90DegTurnDisallowed(), ReverseDiagDir(), TRACK_BIT_DEPOT, TRACK_BIT_NONE, TRACK_BIT_WORMHOLE, TrackCrossesTracks(), TrackdirBitsToTrackBits(), TrackStatusToRedSignals(), TrackStatusToTrackdirBits(), TrainCheckIfLineEnds(), TrainEnterStation(), TRANSPORT_RAIL, VehicleEnterTile(), VETS_CANNOT_ENTER, VETS_ENTERED_STATION, VETS_STATION_ID_OFFSET, Vehicle::x_pos, GetNewVehiclePosResult::y, and Vehicle::y_pos.

Referenced by AdvanceWagonsAfterSwap(), and FixupTrainLengths().

◆ TrainCrashed()

static uint TrainCrashed ( Train * v )

static

Marks train as crashed and creates an AI event.

Doesn't do anything if the train is crashed already.

Parameters

v	first vehicle of chain

Returns: number of victims (including 2 drivers; zero if train was already crashed)

Definition at line 3149 of file train_cmd.cpp.

References Train::Crash(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Game::NewEvent(), AI::NewEvent(), Vehicle::owner, Train::ReserveTrackUnderConsist(), Vehicle::tile, Vehicle::vehstatus, and VS_CRASHED.

Referenced by FindTrainCollideEnum().

◆ TrainEnterStation()

static void TrainEnterStation	(	Train *	v,
		StationID	station
	)

static

Trains enters a station, send out a news item if it is the first train, and start loading.

Parameters

v	Train that entered the station.
station	Station visited.

Definition at line 3003 of file train_cmd.cpp.

References _local_company, AddVehicleNewsItem(), Vehicle::BeginLoading(), SpecializedStation< Station, false >::Get(), HVOT_TRAIN, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Vehicle::last_station_visited, Game::NewEvent(), AI::NewEvent(), NT_ARRIVAL_COMPANY, NT_ARRIVAL_OTHER, Vehicle::owner, SetDParam(), SetWindowDirty(), SRT_TRAIN_ARRIVES, TFP_NONE, Vehicle::tile, TriggerStationRandomisation(), and WC_VEHICLE_VIEW.

Referenced by TrainController().

◆ TrainOnCrossing()

bool TrainOnCrossing ( TileIndex tile )

Check if a level crossing tile has a train on it.

Parameters

tile	tile to test

Returns: true if a train is on the crossing

Precondition: tile is a level crossing

Definition at line 1683 of file train_cmd.cpp.

References HasVehicleOnPos(), IsLevelCrossingTile(), and TrainOnTileEnum().

Referenced by CheckLevelCrossing().

◆ TrainOnTileEnum()

static Vehicle* TrainOnTileEnum	(	Vehicle *	v,
		void *
	)

static

Check if the vehicle is a train.

Parameters

v	vehicle on tile

Returns: v if it is a train, nullptr otherwise

Definition at line 1672 of file train_cmd.cpp.

References BaseVehicle::type, and VEH_TRAIN.

Referenced by TrainOnCrossing().

◆ TryPathReserve()

bool TryPathReserve	(	Train *	v,
		bool	mark_as_stuck,
		bool	first_tile_okay
	)

Try to reserve a path to a safe position.

Parameters

v	The vehicle
mark_as_stuck	Should the train be marked as stuck on a failed reservation?
first_tile_okay	True if no path should be reserved if the current tile is a safe position.

Returns: True if a path could be reserved.

Definition at line 2866 of file train_cmd.cpp.

References _settings_client, ClrBit(), DiagdirReachesTrackdirs(), DiagdirReachesTracks(), FollowTrainReservation(), GetRailDepotDirection(), GetTileRailType(), GetTileTrackStatus(), ClientSettings::gui, HasBit(), HasDepotReservation(), HasReservedTracks(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Vehicle::IsFrontEngine(), MarkTileDirtyByTile(), MarkTrainAsStuck(), PBSTileInfo::okay, Rail90DegTurnDisallowed(), SetDepotReservation(), SetWindowWidgetDirty(), GUISettings::show_track_reservation, PBSTileInfo::tile, Vehicle::tile, TileAddByDiagDir(), TRACK_BIT_DEPOT, TrackCrossesTracks(), PBSTileInfo::trackdir, TrackdirBitsToTrackBits(), TrackdirToExitdir(), TrackdirToTrack(), TrackStatusToTrackdirBits(), TRANSPORT_RAIL, VRF_TRAIN_STUCK, WC_VEHICLE_VIEW, and WID_VV_START_STOP.

Referenced by CmdConvertRail(), and RestoreTrainReservation().

◆ TryReserveSafeTrack()

static bool TryReserveSafeTrack	(	const Train *	v,
		TileIndex	tile,
		Trackdir	td,
		bool	override_railtype
	)

static

Try to reserve any path to a safe tile, ignoring the vehicle's destination.

Safe tiles are tiles in front of a signal, depots and station tiles at end of line.

Parameters

v	The vehicle.
tile	The tile the search should start from.
td	The trackdir the search should start from.
override_railtype	Whether all physically compatible railtypes should be followed.

Returns: True if a path to a safe stopping tile could be reserved.

Definition at line 2593 of file train_cmd.cpp.

References YapfTrainFindNearestSafeTile().

◆ UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval()

void UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval	(	TileIndex	tile,
		Axis	road_axis
	)

Update adjacent level crossing tiles in this multi-track crossing, due to removal of a level crossing tile.

Parameters

tile	The crossing tile which has been or is about to be removed, and which caused the update.
road_axis	The road axis.

Definition at line 1822 of file train_cmd.cpp.

References AxisToDiagDir(), CheckLevelCrossing(), GetCrossingRoadAxis(), IsCrossingBarred(), IsLevelCrossingTile(), MarkTileDirtyByTile(), ReverseDiagDir(), SetCrossingBarred(), Map::Size(), and TileOffsByDiagDir().

◆ UpdateLevelCrossing()

void UpdateLevelCrossing	(	TileIndex	tile,
		bool	sound,
		bool	force_bar
	)

Update a level crossing to barred or open (crossing may include multiple adjacent tiles).

Parameters

tile	Tile which causes the update.
sound	Should we play sound?
force_bar	Should we force the crossing to be barred?

Definition at line 1773 of file train_cmd.cpp.

References AxisToDiagDir(), CheckLevelCrossing(), GetCrossingRoadAxis(), IsLevelCrossingTile(), ReverseDiagDir(), Map::Size(), TileAddByDiagDir(), and UpdateLevelCrossingTile().

Referenced by Train::Crash(), MaybeBarCrossingWithSound(), TryReserveRailTrack(), and UnreserveRailTrack().

◆ UpdateLevelCrossingTile()

static void UpdateLevelCrossingTile	(	TileIndex	tile,
		bool	sound,
		bool	force_barred
	)

static

Sets a level crossing tile to the correct state.

Parameters

tile	Tile to update.
sound	Should we play sound?
force_barred	Should we set the crossing to barred?

Precondition: tile is a rail-road crossing.

Definition at line 1751 of file train_cmd.cpp.

References _settings_client, SoundSettings::ambient, CheckLevelCrossing(), IsCrossingBarred(), IsLevelCrossingTile(), and ClientSettings::sound.

Referenced by UpdateLevelCrossing().

◆ UpdateStatusAfterSwap()

static void UpdateStatusAfterSwap ( Train * v )

static

Updates some variables after swapping the vehicle.

Parameters

v	swapped vehicle

Definition at line 1593 of file train_cmd.cpp.

References Vehicle::direction, IsBridgeTile(), IsTileType(), MP_TUNNELBRIDGE, ReverseDir(), Vehicle::tile, TileVirtXY(), TRACK_BIT_DEPOT, TRACK_BIT_WORMHOLE, GroundVehicle< T, Type >::UpdateInclination(), Vehicle::UpdatePosition(), SpecializedVehicle< T, Type >::UpdateViewport(), VehicleEnterTile(), Vehicle::x_pos, and Vehicle::y_pos.

◆ ValidateTrains()

static CommandCost ValidateTrains	(	Train *	original_dst,
		Train *	dst,
		Train *	original_src,
		Train *	src,
		bool	check_limit
	)

static

Validate whether we are going to create valid trains.

Note: All vehicles are/were 'heads' of their chains.

Parameters

original_dst	The original destination chain.
dst	The destination chain after constructing the train.
original_src	The original source chain.
src	The source chain after constructing the train.
check_limit	Whether to check the vehicle limit.

Returns: possible error of this command.

Definition at line 1102 of file train_cmd.cpp.

References CheckNewTrain(), CheckTrainAttachment(), and CommandCost::Failed().

Referenced by CmdSellRailWagon().

Variable Documentation

◆ _accel_slowdown

const AccelerationSlowdownParams _accel_slowdown[]

static

Initial value:

= {
  
  {256 / 4, 256 / 2, 256 / 4, 2}, 
  {256 / 4, 256 / 2, 256 / 4, 2}, 
  {0,       256 / 2, 256 / 4, 2}, 
}

Speed update fractions for each acceleration type.

Definition at line 3047 of file train_cmd.cpp.

◆ _breakdown_speeds

const uint16_t _breakdown_speeds[16]

static

Initial value:

= {
  225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
}

Maximum speeds for train that is broken down or approaching line end.

Definition at line 3774 of file train_cmd.cpp.

◆ _initial_tile_subcoord

const uint8_t _initial_tile_subcoord[6][4][3]

static

Initial value:

= {
{{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0,  0, 0 }},
{{  0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
{{  0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0,  0, 0 }},
{{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
{{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0,  0, 0 }},
{{  0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
}

Definition at line 2447 of file train_cmd.cpp.

[in,out]	swap_flag1	First train flag.
[in,out]	swap_flag2	Second train flag.

Data Structures

Typedefs

Functions

Variables

Detailed Description

Function Documentation

◆ AdvanceWagonsAfterSwap()

◆ AdvanceWagonsBeforeSwap()

◆ AffectSpeedByZChange()

◆ ArrangeTrains()

◆ ChangeTrainDirRandomly()

◆ CheckIfTrainNeedsService()

◆ CheckLevelCrossing()

◆ CheckNewTrain()

◆ CheckNextTrainTile()

◆ CheckTrainAttachment()

◆ CheckTrainCollision()

◆ CheckTrainsLengths()

◆ CheckTrainStayInDepot()

◆ ClearPathReservation()

◆ CmdBuildRailVehicle()

◆ CmdBuildRailWagon()

◆ CmdForceTrainProceed()

◆ CmdMoveRailVehicle()

◆ CmdReverseTrainDirection()

◆ CmdSellRailWagon()

◆ CollectTrackbitsFromCrashedVehiclesEnum()

◆ DeleteLastWagon()

◆ DoTrainPathfind()

◆ ExtendTrainReservation()

◆ FindClosestTrainDepot()

◆ FindTrainCollideEnum()

◆ FreeTrainTrackReservation()

◆ FreightWagonMult()

◆ GetTrainSpriteSize()

◆ GetTrainStopLocation()

◆ HandleCrashedTrain()

◆ InsertInConsist()

◆ MakeTrainBackup()

◆ MarkDirtyAdjacentLevelCrossingTiles()

◆ MarkTrainAsStuck()

◆ MaybeBarCrossingWithSound()

◆ NormaliseDualHeads()

◆ NormaliseSubtypes()

◆ NormaliseTrainHead()

◆ RemoveFromConsist()

◆ RestoreTrainBackup()

◆ ReverseTrainDirection()

◆ ReverseTrainSwapVeh()

◆ SwapTrainFlags()

◆ TrainApproachingCrossing()

◆ TrainApproachingCrossingEnum()

◆ TrainApproachingCrossingTile()

◆ TrainApproachingLineEnd()

◆ TrainCanLeaveTile()

◆ TrainCheckIfLineEnds()

◆ TrainController()

◆ TrainCrashed()

◆ TrainEnterStation()

◆ TrainOnCrossing()

◆ TrainOnTileEnum()

◆ TryPathReserve()

◆ TryReserveSafeTrack()

◆ UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval()

◆ UpdateLevelCrossing()

◆ UpdateLevelCrossingTile()

◆ UpdateStatusAfterSwap()

◆ ValidateTrains()

Variable Documentation

◆ _accel_slowdown

◆ _breakdown_speeds

◆ _initial_tile_subcoord