This file simplyfies and embeds a common mechanism of loading/saving and mapping of grf entities. More...

#include "sprite.h"
#include "core/alloc_type.hpp"
#include "command_type.h"
#include "direction_type.h"
#include "company_type.h"

Data Structures
struct	TileLayoutRegisters
	Additional modifiers for items in sprite layouts. More...

struct	NewGRFSpriteLayout
	NewGRF supplied spritelayout. More...

struct	EntityIDMapping
	Maps an entity id stored on the map to a GRF file. More...

class	OverrideManagerBase

class	HouseOverrideManager

class	IndustryOverrideManager

class	IndustryTileOverrideManager

class	AirportOverrideManager

class	AirportTileOverrideManager

class	ObjectOverrideManager

struct	GRFFilePropsBase< Tcnt >
	Data related to the handling of grf files. More...

struct	GRFFileProps
	Data related to the handling of grf files. More...

Enumerations
enum	TileContext { TCX_NORMAL , TCX_UPPER_HALFTILE , TCX_ON_BRIDGE }
	Context for tile accesses. More...

enum	TileLayoutFlags { TLF_NOTHING = 0x00 , TLF_DODRAW = 0x01 , TLF_SPRITE = 0x02 , TLF_PALETTE = 0x04 , TLF_CUSTOM_PALETTE = 0x08 , TLF_BB_XY_OFFSET = 0x10 , TLF_BB_Z_OFFSET = 0x20 , TLF_CHILD_X_OFFSET = 0x10 , TLF_CHILD_Y_OFFSET = 0x20 , TLF_SPRITE_VAR10 = 0x40 , TLF_PALETTE_VAR10 = 0x80 , TLF_KNOWN_FLAGS = 0xFF , TLF_DRAWING_FLAGS = ~TLF_CUSTOM_PALETTE , TLF_NON_GROUND_FLAGS = TLF_BB_XY_OFFSET \| TLF_BB_Z_OFFSET \| TLF_CHILD_X_OFFSET \| TLF_CHILD_Y_OFFSET , TLF_VAR10_FLAGS = TLF_SPRITE_VAR10 \| TLF_PALETTE_VAR10 , TLF_SPRITE_REG_FLAGS = TLF_DODRAW \| TLF_SPRITE \| TLF_BB_XY_OFFSET \| TLF_BB_Z_OFFSET \| TLF_CHILD_X_OFFSET \| TLF_CHILD_Y_OFFSET , TLF_PALETTE_REG_FLAGS = TLF_PALETTE }
	Flags to enable register usage in sprite layouts. More...

Functions
uint	GetConstructionStageOffset (uint construction_stage, uint num_sprites)
	Determines which sprite to use from a spriteset for a specific construction stage. More...

uint32_t	GetTerrainType (TileIndex tile, TileContext context=TCX_NORMAL)
	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=true, Axis axis=INVALID_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 struct Livery *l=nullptr)

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 struct GRFFile *grffile, uint16_t cbid, uint16_t cb_res)

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

Variables
static const uint	TLR_MAX_VAR10 = 7
	Maximum value for var 10.

HouseOverrideManager	_house_mngr

IndustryOverrideManager	_industry_mngr

IndustryTileOverrideManager	_industile_mngr

AirportOverrideManager	_airport_mngr

AirportTileOverrideManager	_airporttile_mngr

ObjectOverrideManager	_object_mngr

Detailed Description

This file simplyfies and embeds a common mechanism of loading/saving and mapping of grf entities.

Definition in file newgrf_commons.h.

Enumeration Type Documentation

◆ TileContext

enum TileContext

Context for tile accesses.

Enumerator
TCX_NORMAL	Nothing special.
TCX_UPPER_HALFTILE	Querying information about the upper part of a tile with halftile foundation.
TCX_ON_BRIDGE	Querying information about stuff on the bridge (via some bridgehead).

Definition at line 23 of file newgrf_commons.h.

◆ TileLayoutFlags

enum TileLayoutFlags

Flags to enable register usage in sprite layouts.

Enumerator
TLF_DODRAW	Only draw sprite if value of register TileLayoutRegisters::dodraw is non-zero.
TLF_SPRITE	Add signed offset to sprite from register TileLayoutRegisters::sprite.
TLF_PALETTE	Add signed offset to palette from register TileLayoutRegisters::palette.
TLF_CUSTOM_PALETTE	Palette is from Action 1 (moved to SPRITE_MODIFIER_CUSTOM_SPRITE in palette during loading).
TLF_BB_XY_OFFSET	Add signed offset to bounding box X and Y positions from register TileLayoutRegisters::delta.parent[0..1].
TLF_BB_Z_OFFSET	Add signed offset to bounding box Z positions from register TileLayoutRegisters::delta.parent[2].
TLF_CHILD_X_OFFSET	Add signed offset to child sprite X positions from register TileLayoutRegisters::delta.child[0].
TLF_CHILD_Y_OFFSET	Add signed offset to child sprite Y positions from register TileLayoutRegisters::delta.child[1].
TLF_SPRITE_VAR10	Resolve sprite with a specific value in variable 10.
TLF_PALETTE_VAR10	Resolve palette with a specific value in variable 10.
TLF_KNOWN_FLAGS	Known flags. Any unknown set flag will disable the GRF.
TLF_DRAWING_FLAGS	Flags which are still required after loading the GRF.
TLF_NON_GROUND_FLAGS	Flags which do not work for the (first) ground sprite.
TLF_VAR10_FLAGS	Flags which refer to using multiple action-1-2-3 chains.
TLF_SPRITE_REG_FLAGS	Flags which require resolving the action-1-2-3 chain for the sprite, even if it is no action-1 sprite.
TLF_PALETTE_REG_FLAGS	Flags which require resolving the action-1-2-3 chain for the palette, even if it is no action-1 palette.

Definition at line 32 of file newgrf_commons.h.

Function Documentation

◆ 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.

◆ GetConstructionStageOffset()

uint GetConstructionStageOffset	(	uint	construction_stage,
		uint	num_sprites
	)

inline

Determines which sprite to use from a spriteset for a specific construction stage.

Parameters

construction_stage	Construction stage 0 - 3.
num_sprites	Number of available sprites to select stage from.

Returns: Sprite to use

Definition at line 74 of file newgrf_commons.h.

Referenced by TileLayoutSpriteGroup::ProcessRegisters().

◆ 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().

Data Structures

Enumerations

Functions

Variables

Detailed Description

Enumeration Type Documentation

◆ TileContext

◆ TileLayoutFlags

Function Documentation

◆ ErrorUnknownCallbackResult()

◆ GetConstructionStageOffset()

◆ GetErrorMessageFromLocationCallbackResult()

◆ GetNearbyTile()

◆ GetNearbyTileInformation()

◆ GetTerrainType()