Function LoadSpriteTables

src/gfxinit.cpp:172–228

Actually load the sprite tables. */

/** Actually load the sprite tables. */
static void LoadSpriteTables()
{
	const GraphicsSet *used_set = BaseGraphics::GetUsedSet();

	LoadGrfFile(used_set->files[GFT_BASE].filename, 0, PAL_DOS != used_set->palette);

	/*
	 * The second basic file always starts at the given location and does
	 * contain a different amount of sprites depending on the "type"; DOS
	 * has a few sprites less. However, we do not care about those missing
	 * sprites as they are not shown anyway (logos in intro game).
	 */
	LoadGrfFile(used_set->files[GFT_LOGOS].filename, 4793, PAL_DOS != used_set->palette);

	/*
	 * Load additional sprites for climates other than temperate.
	 * This overwrites some of the temperate sprites, such as foundations
	 * and the ground sprites.
	 */
	if (_settings_game.game_creation.landscape != LandscapeType::Temperate) {
		LoadGrfFileIndexed(
			used_set->files[GFT_ARCTIC + to_underlying(_settings_game.game_creation.landscape) - 1].filename,
			_landscape_spriteindexes[to_underlying(_settings_game.game_creation.landscape) - 1],
			PAL_DOS != used_set->palette
		);
	}

	/* Initialize the unicode to sprite mapping table */
	InitializeUnicodeGlyphMap();

	/*
	 * Load the base and extra NewGRF with OTTD required graphics as first NewGRF.
	 * However, we do not want it to show up in the list of used NewGRFs,
	 * so we have to manually add it, and then remove it later.
	 */

	auto default_extra = GetDefaultExtraGRFConfig();
	auto baseset_extra = GetBasesetExtraGRFConfig();
	std::string default_filename = default_extra->filename;

	_grfconfig.insert(std::begin(_grfconfig), std::move(default_extra));
	_grfconfig.insert(std::next(std::begin(_grfconfig)), std::move(baseset_extra));

	LoadNewGRF(SPR_NEWGRFS_BASE, 2);

	uint total_extra_graphics = SPR_NEWGRFS_BASE - SPR_OPENTTD_BASE;
	Debug(sprite, 4, "Checking sprites from fallback grf");
	_missing_extra_graphics = GetSpriteCountForFile(default_filename, SPR_OPENTTD_BASE, SPR_NEWGRFS_BASE);
	Debug(sprite, 1, "{} extra sprites, {} from baseset, {} from fallback", total_extra_graphics, total_extra_graphics - _missing_extra_graphics, _missing_extra_graphics);

	/* The original baseset extra graphics intentionally make use of the fallback graphics.
	 * Let's say everything which provides less than 500 sprites misses the rest intentionally. */
	if (500 + _missing_extra_graphics > total_extra_graphics) _missing_extra_graphics = 0;

	/* Remove the default and baseset extra graphics from the config. */
	_grfconfig.erase(std::begin(_grfconfig), std::next(std::begin(_grfconfig), 2));
}