grf.cpp File Reference

Reading graphics data from (New)GRF files. More...

#include "../stdafx.h"
#include "../gfx_func.h"
#include "../debug.h"
#include "../settings_type.h"
#include "../strings_func.h"
#include "table/strings.h"
#include "../error.h"
#include "../core/math_func.hpp"
#include "../core/alloc_type.hpp"
#include "../core/bitmath_func.hpp"
#include "../spritecache.h"
#include "grf.hpp"
#include "../safeguards.h"

Go to the source code of this file.

Functions
static bool	WarnCorruptSprite (const SpriteFile &file, size_t file_pos, int line)
	We found a corrupted sprite. More...
bool	DecodeSingleSprite (SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, int64_t num, uint8_t type, ZoomLevel zoom_lvl, uint8_t colour_fmt, uint8_t container_format)
	Decode the image data of a single sprite. More...
uint8_t	LoadSpriteV1 (SpriteLoader::SpriteCollection &sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp)
uint8_t	LoadSpriteV2 (SpriteLoader::SpriteCollection &sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint8_t control_flags)

Variables
const uint8_t	_palmap_w2d []

Detailed Description

Reading graphics data from (New)GRF files.

Definition in file grf.cpp.

Function Documentation

DecodeSingleSprite()

bool DecodeSingleSprite	(	SpriteLoader::Sprite *	sprite,
		SpriteFile &	file,
		size_t	file_pos,
		SpriteType	sprite_type,
		int64_t	num,
		uint8_t	type,
		ZoomLevel	zoom_lvl,
		uint8_t	colour_fmt,
		uint8_t	container_format
	)

Decode the image data of a single sprite.

Parameters

[in,out]	sprite	Filled with the sprite image data.
	file	The file with the sprite data.
	file_pos	File position.
	sprite_type	Type of the sprite we're decoding.
	num	Size of the decompressed sprite.
	type	Type of the encoded sprite.
	zoom_lvl	Requested zoom level.
	colour_fmt	Colour format of the sprite.
	container_format	Container format of the GRF this sprite is in.

Returns

True if the sprite was successfully loaded.

Definition at line 60 of file grf.cpp.

References SpriteLoader::Sprite::AllocateData(), SpriteLoader::Sprite::height, RandomAccessFile::ReadByte(), SCC_ALPHA, SCC_PAL, SCC_RGB, WarnCorruptSprite(), and SpriteLoader::Sprite::width.

WarnCorruptSprite()

static bool WarnCorruptSprite ( const SpriteFile &  file, size_t  file_pos, int  line  )

static

We found a corrupted sprite.

This means that the sprite itself contains invalid data or is too small for the given dimensions.

Parameters

file_slot	the file the errored sprite is in
file_pos	the location in the file of the errored sprite
line	the line where the error occurs.

Returns

always false (to tell loading the sprite failed)

Definition at line 35 of file grf.cpp.

References Debug, RandomAccessFile::GetSimplifiedFilename(), INVALID_STRING_ID, SetDParamStr(), ShowErrorMessage(), and WL_ERROR.

Referenced by DecodeSingleSprite().