Common return value for all commands. More...

#include <command_type.h>

Public Member Functions
	CommandCost ()
	Creates a command cost return with no cost and no error.

	CommandCost (StringID msg, StringID extra_msg=INVALID_STRING_ID)
	Creates a command return value with one, or optionally two, error message strings.

	CommandCost (ExpensesType ex_t)
	Creates a command cost with given expense type and start cost of 0. More...

	CommandCost (ExpensesType ex_t, const Money &cst)
	Creates a command return value with the given start cost and expense type. More...

void	AddCost (const Money &cost)
	Adds the given cost to the cost of the command. More...

void	AddCost (const CommandCost &cmd_cost)
	Adds the cost of the given command return value to this cost. More...

void	MultiplyCost (int factor)
	Multiplies the cost of the command by the given factor. More...

Money	GetCost () const
	The costs as made up to this moment. More...

ExpensesType	GetExpensesType () const
	The expense type of the cost. More...

void	MakeError (StringID message, StringID extra_message=INVALID_STRING_ID)
	Makes this CommandCost behave like an error command. More...

void	UseTextRefStack (const GRFFile *grffile, uint num_registers)
	Activate usage of the NewGRF TextRefStack for the error message. More...

const GRFFile *	GetTextRefStackGRF () const
	Returns the NewGRF providing the TextRefStack of the error message. More...

uint	GetTextRefStackSize () const
	Returns the number of uint32_t values for the TextRefStack of the error message. More...

const uint32_t *	GetTextRefStack () const
	Returns a pointer to the values for the TextRefStack of the error message. More...

StringID	GetErrorMessage () const
	Returns the error message of a command. More...

StringID	GetExtraErrorMessage () const
	Returns the extra error message of a command. More...

bool	Succeeded () const
	Did this command succeed? More...

bool	Failed () const
	Did this command fail? More...

Private Attributes
Money	cost
	The cost of this action.

StringID	message
	Warning message for when success is unset.

ExpensesType	expense_type
	the type of expence as shown on the finances view

bool	success
	Whether the command went fine up to this moment.

const GRFFile *	textref_stack_grffile = nullptr
	NewGRF providing the TextRefStack content.

uint	textref_stack_size = 0
	Number of uint32_t values to put on the TextRefStack for the error message.

StringID	extra_message = INVALID_STRING_ID
	Additional warning message for when success is unset.

Static Private Attributes
static uint32_t	textref_stack [16]
	Values to put on the TextRefStack for the error message. More...

Detailed Description

Common return value for all commands.

Wraps the cost and a possible error message/state together.

Definition at line 23 of file command_type.h.

Constructor & Destructor Documentation

◆ CommandCost() [1/2]

CommandCost::CommandCost ( ExpensesType ex_t )

inlineexplicit

Creates a command cost with given expense type and start cost of 0.

Parameters

ex_t	the expense type

Definition at line 49 of file command_type.h.

◆ CommandCost() [2/2]

CommandCost::CommandCost	(	ExpensesType	ex_t,
		const Money &	cst
	)

inline

Creates a command return value with the given start cost and expense type.

Parameters

ex_t	the expense type
cst	the initial cost of this command

Definition at line 56 of file command_type.h.

Member Function Documentation

◆ AddCost() [1/2]

void CommandCost::AddCost ( const CommandCost & ret )

Adds the cost of the given command return value to this cost.

Also takes a possible error message when it is set.

Parameters

ret	The command to add the cost of.

Definition at line 401 of file command.cpp.

References AddCost(), cost, message, and success.

◆ AddCost() [2/2]

void CommandCost::AddCost ( const Money & cost )

inline

Adds the given cost to the cost of the command.

Parameters

cost	the cost to add

Definition at line 63 of file command_type.h.

References cost.

Referenced by AddCost(), CalculateRoadStopCost(), CheckBuildableTile(), CheckFlatLandAirport(), CheckFlatLandRoadStop(), CmdAutoreplaceVehicle(), CmdBuildLongRoad(), CmdBuildObjectArea(), CmdBuildRoadDepot(), CmdBuildTrainDepot(), CmdClearArea(), CmdConvertRail(), CmdDepotMassAutoReplace(), CmdDepotSellAllVehicles(), CmdLandscapeClear(), CmdLevelLand(), CmdSellRailWagon(), CmdTerraformLand(), CompaniesGenStatistics(), CopyHeadSpecificThings(), DoBuildLock(), RemoveAirport(), RemoveFromRailBaseStation(), and ReplaceFreeUnit().

◆ Failed()

bool CommandCost::Failed ( ) const

inline

Did this command fail?

Returns: true if and only if it failed

Definition at line 171 of file command_type.h.

References success.

Referenced by BuildReplacementVehicle(), BuildStationPart(), CalculateRoadStopCost(), CheckBuildableTile(), CheckFlatLandAirport(), CheckFlatLandRoadStop(), CheckIfIndustryTilesAreFree(), CmdAutofillTimetable(), CmdAutoreplaceVehicle(), CmdBuildLongRoad(), CmdBuildObjectArea(), CmdClearArea(), CmdCloneOrder(), CmdCloneVehicle(), CmdConvertRail(), CmdDeleteOrder(), CmdForceTrainProceed(), CmdInsertOrder(), CmdLevelLand(), CmdMoveOrder(), CmdMoveRailVehicle(), CmdOpenCloseAirport(), CmdOrderRefit(), CmdRefitVehicle(), CmdRenameDepot(), CmdRenameStation(), CmdRenameVehicle(), CmdRenameWaypoint(), CmdReverseTrainDirection(), CmdSellRailWagon(), CmdSellVehicle(), CmdSetTimetableStart(), CmdSetVehicleOnTime(), CmdSkipToOrder(), CmdStartStopVehicle(), CmdTurnRoadVeh(), DoBuildLock(), DoClearBridge(), DoClearTunnel(), CommandHelperBase::InternalExecuteProcessResult(), CommandHelperBase::InternalExecuteValidateTestAndPrepExec(), IsRoadAllowedHere(), RemoveAirport(), RemoveBuoy(), RemoveDock(), RemoveFromRailBaseStation(), RemoveLock(), RemoveRoadStop(), RemoveRoadWaypointStop(), Vehicle::SendToDepot(), ShowBuildBridgeWindow(), and ValidateTrains().

◆ GetCost()

Money CommandCost::GetCost ( ) const

inline

The costs as made up to this moment.

Returns: the costs

Definition at line 83 of file command_type.h.

References cost.

Referenced by CheckCompanyHasMoney(), CmdAutoreplaceVehicle(), CmdBuildObjectArea(), CmdClearArea(), CmdGiveMoney(), CmdLevelLand(), CommandHelperBase::InternalExecuteProcessResult(), SubtractMoneyFromAnyCompany(), and SubtractMoneyFromCompanyFract().

◆ GetErrorMessage()

StringID CommandCost::GetErrorMessage ( ) const

inline

Returns the error message of a command.

Returns: the error message, if succeeded INVALID_STRING_ID

Definition at line 142 of file command_type.h.

References INVALID_STRING_ID, and message.

Referenced by CmdBuildLongRoad(), CmdLevelLand(), and ShowBuildBridgeWindow().

◆ GetExpensesType()

ExpensesType CommandCost::GetExpensesType ( ) const

inline

The expense type of the cost.

Returns: the expense type

Definition at line 92 of file command_type.h.

References expense_type.

Referenced by SubtractMoneyFromAnyCompany(), and SubtractMoneyFromCompanyFract().

◆ GetExtraErrorMessage()

StringID CommandCost::GetExtraErrorMessage ( ) const

inline

Returns the extra error message of a command.

Returns: the extra error message, if succeeded INVALID_STRING_ID

Definition at line 152 of file command_type.h.

References extra_message, and INVALID_STRING_ID.

◆ GetTextRefStack()

const uint32_t* CommandCost::GetTextRefStack ( ) const

inline

Returns a pointer to the values for the TextRefStack of the error message.

Returns: uint32_t values for the TextRefStack

Definition at line 133 of file command_type.h.

References textref_stack.

◆ GetTextRefStackGRF()

const GRFFile* CommandCost::GetTextRefStackGRF ( ) const

inline

Returns the NewGRF providing the TextRefStack of the error message.

Returns: the NewGRF.

Definition at line 115 of file command_type.h.

References textref_stack_grffile.

◆ GetTextRefStackSize()

uint CommandCost::GetTextRefStackSize ( ) const

inline

Returns the number of uint32_t values for the TextRefStack of the error message.

Returns: number of uint32_t values.

Definition at line 124 of file command_type.h.

References textref_stack_size.

◆ MakeError()

void CommandCost::MakeError	(	StringID	message,
		StringID	extra_message = `INVALID_STRING_ID`
	)

inline

Makes this CommandCost behave like an error command.

Parameters

message The error message.

Definition at line 101 of file command_type.h.

References extra_message, INVALID_STRING_ID, and message.

Referenced by CheckCompanyHasMoney(), and CmdConvertRail().

◆ MultiplyCost()

void CommandCost::MultiplyCost ( int factor )

inline

Multiplies the cost of the command by the given factor.

Parameters

factor factor to multiply the costs with

Definition at line 74 of file command_type.h.

◆ Succeeded()

bool CommandCost::Succeeded ( ) const

inline

Did this command succeed?

Returns: true if and only if it succeeded

Definition at line 162 of file command_type.h.

References success.

Referenced by CanBuildTramTrackOnTile(), CheckClearTile(), ClearMakeHouseTile(), CmdAutoreplaceVehicle(), CmdDepotMassAutoReplace(), CmdDepotSellAllVehicles(), CmdLevelLand(), CopyHeadSpecificThings(), DoBuildLock(), CommandHelperBase::InternalDoAfter(), RemoveDock(), RemoveLock(), ReplaceFreeUnit(), and SendAllVehiclesToDepot().

◆ UseTextRefStack()

void CommandCost::UseTextRefStack	(	const GRFFile *	grffile,
		uint	num_registers
	)

Activate usage of the NewGRF TextRefStack for the error message.

Parameters

grffile	NewGRF that provides the TextRefStack
num_registers	number of entries to copy from the temporary NewGRF registers

Definition at line 422 of file command.cpp.

Field Documentation

◆ textref_stack

uint32_t CommandCost::textref_stack

staticprivate

Values to put on the TextRefStack for the error message.

There is only one static instance of the array, just like there is only one instance of normal DParams.

Definition at line 32 of file command_type.h.

Referenced by GetTextRefStack().

The documentation for this class was generated from the following files:

src/command_type.h
src/command.cpp

Public Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CommandCost() [1/2]

◆ CommandCost() [2/2]

Member Function Documentation

◆ AddCost() [1/2]

◆ AddCost() [2/2]

◆ Failed()

◆ GetCost()

◆ GetErrorMessage()

◆ GetExpensesType()

◆ GetExtraErrorMessage()

◆ GetTextRefStack()

◆ GetTextRefStackGRF()

◆ GetTextRefStackSize()

◆ MakeError()

◆ MultiplyCost()

◆ Succeeded()

◆ UseTextRefStack()

Field Documentation

◆ textref_stack