NewGRF handling of engines. More...

#include "stdafx.h"
#include "debug.h"
#include "train.h"
#include "roadveh.h"
#include "company_func.h"
#include "newgrf_cargo.h"
#include "newgrf_spritegroup.h"
#include "timer/timer_game_calendar.h"
#include "vehicle_func.h"
#include "core/random_func.hpp"
#include "core/container_func.hpp"
#include "aircraft.h"
#include "station_base.h"
#include "company_base.h"
#include "newgrf_railtype.h"
#include "newgrf_roadtype.h"
#include "ship.h"
#include "safeguards.h"

Data Structures
struct	ListOrderChange

Enumerations
enum	TTDPAircraftMovementStates { AMS_TTDP_HANGAR , AMS_TTDP_TO_HANGAR , AMS_TTDP_TO_PAD1 , AMS_TTDP_TO_PAD2 , AMS_TTDP_TO_PAD3 , AMS_TTDP_TO_ENTRY_2_AND_3 , AMS_TTDP_TO_ENTRY_2_AND_3_AND_H , AMS_TTDP_TO_JUNCTION , AMS_TTDP_LEAVE_RUNWAY , AMS_TTDP_TO_INWAY , AMS_TTDP_TO_RUNWAY , AMS_TTDP_TO_OUTWAY , AMS_TTDP_WAITING , AMS_TTDP_TAKEOFF , AMS_TTDP_TO_TAKEOFF , AMS_TTDP_CLIMBING , AMS_TTDP_FLIGHT_APPROACH , AMS_TTDP_UNUSED_0x11 , AMS_TTDP_FLIGHT_TO_TOWER , AMS_TTDP_UNUSED_0x13 , AMS_TTDP_FLIGHT_FINAL , AMS_TTDP_FLIGHT_DESCENT , AMS_TTDP_BRAKING , AMS_TTDP_HELI_TAKEOFF_AIRPORT , AMS_TTDP_HELI_TO_TAKEOFF_AIRPORT , AMS_TTDP_HELI_LAND_AIRPORT , AMS_TTDP_HELI_TAKEOFF_HELIPORT , AMS_TTDP_HELI_TO_TAKEOFF_HELIPORT , AMS_TTDP_HELI_LAND_HELIPORT }

enum	TTDPAircraftMovementActions { AMA_TTDP_IN_HANGAR , AMA_TTDP_ON_PAD1 , AMA_TTDP_ON_PAD2 , AMA_TTDP_ON_PAD3 , AMA_TTDP_HANGAR_TO_PAD1 , AMA_TTDP_HANGAR_TO_PAD2 , AMA_TTDP_HANGAR_TO_PAD3 , AMA_TTDP_LANDING_TO_PAD1 , AMA_TTDP_LANDING_TO_PAD2 , AMA_TTDP_LANDING_TO_PAD3 , AMA_TTDP_PAD1_TO_HANGAR , AMA_TTDP_PAD2_TO_HANGAR , AMA_TTDP_PAD3_TO_HANGAR , AMA_TTDP_PAD1_TO_TAKEOFF , AMA_TTDP_PAD2_TO_TAKEOFF , AMA_TTDP_PAD3_TO_TAKEOFF , AMA_TTDP_HANGAR_TO_TAKOFF , AMA_TTDP_LANDING_TO_HANGAR , AMA_TTDP_IN_FLIGHT }

Functions
void	SetWagonOverrideSprites (EngineID engine, CargoID cargo, const SpriteGroup *group, std::span< EngineID > engine_ids)

const SpriteGroup *	GetWagonOverrideSpriteSet (EngineID engine, CargoID cargo, EngineID overriding_engine)

void	SetCustomEngineSprites (EngineID engine, uint8_t cargo, const SpriteGroup *group)

void	SetEngineGRF (EngineID engine, const GRFFile *file)
	Tie a GRFFile entry to an engine, to allow us to retrieve GRF parameters etc during a game. More...

static int	MapOldSubType (const Vehicle *v)

static uint8_t	MapAircraftMovementState (const Aircraft *v)
	Map OTTD aircraft movement states to TTDPatch style movement states (VarAction 2 Variable 0xE2)

static uint8_t	MapAircraftMovementAction (const Aircraft *v)
	Map OTTD aircraft movement states to TTDPatch style movement actions (VarAction 2 Variable 0xE6) This is not fully supported yet but it's enough for Planeset.

static const Livery *	LiveryHelper (EngineID engine, const Vehicle *v)
	Determines the livery of an engine. More...

static uint32_t	PositionHelper (const Vehicle *v, bool consecutive)
	Helper to get the position of a vehicle within a chain of vehicles. More...

static uint32_t	VehicleGetVariable (Vehicle v, const VehicleScopeResolver object, uint8_t variable, uint32_t parameter, bool &available)

static const GRFFile *	GetEngineGrfFile (EngineID engine_type)
	Get the grf file associated with an engine type. More...

void	GetCustomEngineSprite (EngineID engine, const Vehicle v, Direction direction, EngineImageType image_type, VehicleSpriteSeq result)

void	GetRotorOverrideSprite (EngineID engine, const struct Aircraft v, EngineImageType image_type, VehicleSpriteSeq result)

bool	UsesWagonOverride (const Vehicle *v)
	Check if a wagon is currently using a wagon override. More...

uint16_t	GetVehicleCallback (CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v)
	Evaluate a newgrf callback for vehicles. More...

uint16_t	GetVehicleCallbackParent (CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle v, const Vehicle parent)
	Evaluate a newgrf callback for vehicles with a different vehicle for parent scope. More...

int	GetVehicleProperty (const Vehicle *v, PropertyID property, int orig_value, bool is_signed)

int	GetEngineProperty (EngineID engine, PropertyID property, int orig_value, const Vehicle *v, bool is_signed)

bool	TestVehicleBuildProbability (Vehicle *v, EngineID engine, BuildProbabilityType type)
	Test for vehicle build probablity type. More...

static void	DoTriggerVehicle (Vehicle *v, VehicleTrigger trigger, uint16_t base_random_bits, bool first)

void	TriggerVehicle (Vehicle *v, VehicleTrigger trigger)

void	AlterVehicleListOrder (EngineID engine, uint target)
	Record a vehicle ListOrderChange. More...

static bool	EnginePreSort (const EngineID &a, const EngineID &b)
	Comparator function to sort engines via scope-GRFID and local ID. More...

void	CommitVehicleListOrderChanges ()
	Deternine default engine sorting and execute recorded ListOrderChanges from AlterVehicleListOrder.

void	FillNewGRFVehicleCache (const Vehicle *v)
	Fill the grf_cache of the given vehicle. More...

Variables
static std::vector< ListOrderChange >	_list_order_changes

Detailed Description

NewGRF handling of engines.

Definition in file newgrf_engine.cpp.

Function Documentation

◆ AlterVehicleListOrder()

void AlterVehicleListOrder	(	EngineID	engine,
		uint	target
	)

Record a vehicle ListOrderChange.

Parameters

engine	Engine to move
target	Local engine ID to move engine in front of

Note: All sorting is done later in CommitVehicleListOrderChanges

Definition at line 1299 of file newgrf_engine.cpp.

◆ EnginePreSort()

static bool EnginePreSort	(	const EngineID &	a,
		const EngineID &	b
	)

static

Comparator function to sort engines via scope-GRFID and local ID.

Parameters

a	left side
b	right side

Returns: comparison result

Definition at line 1311 of file newgrf_engine.cpp.

Referenced by CommitVehicleListOrderChanges().

◆ FillNewGRFVehicleCache()

void FillNewGRFVehicleCache ( const Vehicle * v )

Fill the grf_cache of the given vehicle.

Parameters

v	The vehicle to fill the cache for.

Definition at line 1382 of file newgrf_engine.cpp.

References NewGRFCache::cache_valid, Vehicle::engine_type, VehicleResolverObject::GetScope(), ScopeResolver::GetVariable(), Vehicle::grf_cache, HasBit(), lengthof, NCVV_COMPANY_INFORMATION, NCVV_CONSIST_CARGO_INFORMATION, NCVV_END, NCVV_POSITION_CONSIST_LENGTH, NCVV_POSITION_IN_VEHICLE, NCVV_POSITION_SAME_ID_LENGTH, VSG_SCOPE_SELF, and VehicleResolverObject::WO_NONE.

◆ GetEngineGrfFile()

static const GRFFile* GetEngineGrfFile ( EngineID engine_type )

static

Get the grf file associated with an engine type.

Parameters

engine_type Engine to query.

Returns: grf file associated with the engine.

Definition at line 1022 of file newgrf_engine.cpp.

References Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_engine_pool >::Get(), and Engine::GetGRF().

◆ GetVehicleCallback()

uint16_t GetVehicleCallback	(	CallbackID	callback,
		uint32_t	param1,
		uint32_t	param2,
		EngineID	engine,
		const Vehicle *	v
	)

Evaluate a newgrf callback for vehicles.

Parameters

callback	The callback to evaluate
param1	First parameter of the callback
param2	Second parameter of the callback
engine	Engine type of the vehicle to evaluate the callback for
v	The vehicle to evaluate the callback for, or nullptr if it doesn't exist yet

Returns: The value the callback returned, or CALLBACK_FAILED if it failed

Definition at line 1149 of file newgrf_engine.cpp.

◆ GetVehicleCallbackParent()

uint16_t GetVehicleCallbackParent	(	CallbackID	callback,
		uint32_t	param1,
		uint32_t	param2,
		EngineID	engine,
		const Vehicle *	v,
		const Vehicle *	parent
	)

Evaluate a newgrf callback for vehicles with a different vehicle for parent scope.

Parameters

callback	The callback to evaluate
param1	First parameter of the callback
param2	Second parameter of the callback
engine	Engine type of the vehicle to evaluate the callback for
v	The vehicle to evaluate the callback for, or nullptr if it doesn't exist yet
parent	The vehicle to use for parent scope

Returns: The value the callback returned, or CALLBACK_FAILED if it failed

Definition at line 1165 of file newgrf_engine.cpp.

◆ LiveryHelper()

static const Livery* LiveryHelper	(	EngineID	engine,
		const Vehicle *	v
	)

static

Determines the livery of an engine.

This always uses dual company colours independent of GUI settings. So it is desync-safe.

Parameters

engine	Engine type
v	Vehicle, nullptr in purchase list.

Returns: Livery to use

Definition at line 373 of file newgrf_engine.cpp.

References _current_company, Vehicle::engine_type, GroundVehicleCache::first_engine, GetEngineLivery(), Vehicle::GetGroundVehicleCache(), INVALID_ENGINE, Vehicle::IsGroundVehicle(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::IsValidID(), LIT_ALL, and Vehicle::owner.

Referenced by VehicleScopeResolver::GetVariable().

◆ PositionHelper()

static uint32_t PositionHelper	(	const Vehicle *	v,
		bool	consecutive
	)

static

Helper to get the position of a vehicle within a chain of vehicles.

Parameters

v	the vehicle to get the position of.
consecutive	whether to look at the whole chain or the vehicles with the same 'engine type'.

Returns: the position in the chain from front and tail and chain length.

Definition at line 396 of file newgrf_engine.cpp.

References Vehicle::engine_type, Vehicle::First(), and Vehicle::Next().

◆ SetEngineGRF()

void SetEngineGRF	(	EngineID	engine,
		const GRFFile *	file
	)

Tie a GRFFile entry to an engine, to allow us to retrieve GRF parameters etc during a game.

Parameters

engine	Engine ID to tie the GRFFile to.
file	Pointer of GRFFile to tie.

Definition at line 71 of file newgrf_engine.cpp.

References Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_engine_pool >::Get(), Engine::grf_prop, and GRFFilePropsBase< Tcnt >::grffile.

◆ TestVehicleBuildProbability()

bool TestVehicleBuildProbability	(	Vehicle *	v,
		EngineID	engine,
		BuildProbabilityType	type
	)

Test for vehicle build probablity type.

Parameters

v	Vehicle whose build probability to test.
type	Build probability type to test for.

Returns: True iff the probability result says so.

Definition at line 1201 of file newgrf_engine.cpp.

◆ UsesWagonOverride()

bool UsesWagonOverride ( const Vehicle * v )

Check if a wagon is currently using a wagon override.

Parameters

v	The wagon to check

Returns: true if it is using an override, false otherwise

Definition at line 1134 of file newgrf_engine.cpp.

References SpecializedVehicle< T, Type >::From(), BaseVehicle::type, and VEH_TRAIN.

Data Structures

Enumerations

Functions

Variables

Detailed Description

Function Documentation

◆ AlterVehicleListOrder()

◆ EnginePreSort()

◆ FillNewGRFVehicleCache()

◆ GetEngineGrfFile()

◆ GetVehicleCallback()

◆ GetVehicleCallbackParent()

◆ LiveryHelper()

◆ PositionHelper()

◆ SetEngineGRF()

◆ TestVehicleBuildProbability()

◆ UsesWagonOverride()