Implementation of the class OverrideManagerBase and its descendance, present and future. More...

#include "stdafx.h"
#include "debug.h"
#include "landscape.h"
#include "house.h"
#include "industrytype.h"
#include "newgrf_config.h"
#include "clear_map.h"
#include "station_map.h"
#include "tree_map.h"
#include "tunnelbridge_map.h"
#include "newgrf_object.h"
#include "genworld.h"
#include "newgrf_spritegroup.h"
#include "newgrf_text.h"
#include "company_base.h"
#include "error.h"
#include "strings_func.h"
#include "string_func.h"
#include "table/strings.h"
#include "safeguards.h"

Functions
uint32_t	GetTerrainType (TileIndex tile, TileContext context)
	Function used by houses (and soon industries) to get information on type of "terrain" the tile it is queries sits on. More...

TileIndex	GetNearbyTile (uint8_t parameter, TileIndex tile, bool signed_offsets, Axis axis)
	Get the tile at the given offset. More...

uint32_t	GetNearbyTileInformation (TileIndex tile, bool grf_version8)
	Common part of station var 0x67, house var 0x62, indtile var 0x60, industry var 0x62. More...

uint32_t	GetCompanyInfo (CompanyID owner, const Livery *l)
	Returns company information like in vehicle var 43 or station var 43. More...

CommandCost	GetErrorMessageFromLocationCallbackResult (uint16_t cb_res, const GRFFile *grffile, StringID default_error)
	Get the error message from a shape/location/slope check callback result. More...

void	ErrorUnknownCallbackResult (uint32_t grfid, uint16_t cbid, uint16_t cb_res)
	Record that a NewGRF returned an unknown/invalid callback result. More...

bool	ConvertBooleanCallback (const GRFFile *grffile, uint16_t cbid, uint16_t cb_res)
	Converts a callback result into a boolean. More...

bool	Convert8bitBooleanCallback (const GRFFile *grffile, uint16_t cbid, uint16_t cb_res)
	Converts a callback result into a boolean. More...

Detailed Description

Implementation of the class OverrideManagerBase and its descendance, present and future.

Definition in file newgrf_commons.cpp.

Function Documentation

◆ Convert8bitBooleanCallback()

bool Convert8bitBooleanCallback	(	const GRFFile *	grffile,
		uint16_t	cbid,
		uint16_t	cb_res
	)

Converts a callback result into a boolean.

For grf version < 8 the first 8 bit of the result are checked for zero or non-zero. For grf version >= 8 the callback result must be 0 or 1.

Parameters

grffile	NewGRF returning the value.
cbid	Callback returning the value.
cb_res	Callback result.

Returns: Boolean value. True if cb_res != 0.

Definition at line 554 of file newgrf_commons.cpp.

◆ ConvertBooleanCallback()

bool ConvertBooleanCallback	(	const GRFFile *	grffile,
		uint16_t	cbid,
		uint16_t	cb_res
	)

Converts a callback result into a boolean.

For grf version < 8 the result is checked for zero or non-zero. For grf version >= 8 the callback result must be 0 or 1.

Parameters

grffile	NewGRF returning the value.
cbid	Callback returning the value.
cb_res	Callback result.

Returns: Boolean value. True if cb_res != 0.

Definition at line 535 of file newgrf_commons.cpp.

◆ ErrorUnknownCallbackResult()

void ErrorUnknownCallbackResult	(	uint32_t	grfid,
		uint16_t	cbid,
		uint16_t	cb_res
	)

Record that a NewGRF returned an unknown/invalid callback result.

Also show an error to the user.

Parameters

grfid	ID of the NewGRF causing the problem.
cbid	Callback causing the problem.
cb_res	Invalid result returned by the callback.

Definition at line 505 of file newgrf_commons.cpp.

◆ GetCompanyInfo()

uint32_t GetCompanyInfo	(	CompanyID	owner,
		const Livery *	l
	)

Returns company information like in vehicle var 43 or station var 43.

Parameters

owner	Owner of the object.
l	Livery of the object; nullptr to use default.

Returns: NewGRF company information.

Definition at line 456 of file newgrf_commons.cpp.

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

Referenced by VehicleScopeResolver::GetVariable(), and StationScopeResolver::GetVariable().

◆ GetErrorMessageFromLocationCallbackResult()

CommandCost GetErrorMessageFromLocationCallbackResult	(	uint16_t	cb_res,
		const GRFFile *	grffile,
		StringID	default_error
	)

Get the error message from a shape/location/slope check callback result.

Parameters

cb_res	Callback result to translate. If bit 10 is set this is a standard error message, otherwise a NewGRF provided string.
grffile	NewGRF to use to resolve a custom error message.
default_error	Error message to use for the generic error.

Returns: CommandCost indicating success or the error message.

Definition at line 469 of file newgrf_commons.cpp.

◆ GetNearbyTile()

TileIndex GetNearbyTile	(	uint8_t	parameter,
		TileIndex	tile,
		bool	signed_offsets,
		Axis	axis
	)

Get the tile at the given offset.

Parameters

parameter	The NewGRF "encoded" offset.
tile	The tile to base the offset from.
signed_offsets	Whether the offsets are to be interpreted as signed or not.
axis	Axis of a railways station.

Returns: The tile at the offset.

Definition at line 410 of file newgrf_commons.cpp.

Referenced by GetNearbyAirportTileInformation(), GetNearbyIndustryTileInformation(), GetNearbyObjectTileInformation(), GetNearbyTileInformation(), AirportTileScopeResolver::GetVariable(), ObjectScopeResolver::GetVariable(), and StationScopeResolver::GetVariable().

◆ GetNearbyTileInformation()

uint32_t GetNearbyTileInformation	(	TileIndex	tile,
		bool	grf_version8
	)

Common part of station var 0x67, house var 0x62, indtile var 0x60, industry var 0x62.

Parameters

tile	the tile of interest.
grf_version8	True, if we are dealing with a new NewGRF which uses GRF version >= 8.

Returns: 0czzbbss: c = TileType; zz = TileZ; bb: 7-3 zero, 4-2 TerrainType, 1 water/shore, 0 zero; ss = TileSlope

Definition at line 433 of file newgrf_commons.cpp.

References GetTerrainType(), GetTilePixelSlope(), GetTileType(), GetTreeGround(), GetWaterClass(), HasTileWaterClass(), IsRoadWaypointTile(), IsTileType(), MP_ROAD, MP_TREES, MP_WATER, TILE_HEIGHT, and TREE_GROUND_SHORE.

Referenced by GetNearbyAirportTileInformation(), GetNearbyIndustryTileInformation(), and GetNearbyObjectTileInformation().

◆ GetTerrainType()

uint32_t GetTerrainType	(	TileIndex	tile,
		TileContext	context
	)

Function used by houses (and soon industries) to get information on type of "terrain" the tile it is queries sits on.

Parameters

tile	TileIndex of the tile been queried
context	The context of the tile.

Returns: value corresponding to the grf expected format: Terrain type: 0 normal, 1 desert, 2 rainforest, 4 on or above snowline

Definition at line 335 of file newgrf_commons.cpp.

References _settings_game, GameSettings::game_creation, and GameCreationSettings::landscape.

Referenced by GetNearbyTileInformation(), AirportTileScopeResolver::GetVariable(), CanalScopeResolver::GetVariable(), HouseScopeResolver::GetVariable(), IndustriesScopeResolver::GetVariable(), IndustryTileScopeResolver::GetVariable(), and ObjectScopeResolver::GetVariable().

Functions

Detailed Description

Function Documentation

◆ Convert8bitBooleanCallback()

◆ ConvertBooleanCallback()

◆ ErrorUnknownCallbackResult()

◆ GetCompanyInfo()

◆ GetErrorMessageFromLocationCallbackResult()

◆ GetNearbyTile()

◆ GetNearbyTileInformation()

◆ GetTerrainType()