/**
* Handle all procedures for bootstrapping OpenTTD without a base graphics set.
* This requires all kinds of trickery that is needed to avoid the use of
* sprites from the base graphics set which are pretty interwoven.
* @return True if a base set exists, otherwise false.
*/
bool HandleBootstrap()
{
if (BaseGraphics::GetUsedSet() != NULL) return true;
/* No user interface, bail out with an error. */
if (BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() == 0) goto failure;
/* If there is no network or no freetype, then there is nothing we can do. Go straight to failure. */
#if defined(ENABLE_NETWORK) && defined(WITH_FREETYPE) && !defined(__APPLE__) && (defined(WITH_FONTCONFIG) || defined(WIN32))
if (!_network_available) goto failure;
/* First tell the game we're bootstrapping. */
_game_mode = GM_BOOTSTRAP;
/* Initialise the freetype font code. */
InitializeUnicodeGlyphMap();
/* Next "force" finding a suitable freetype font as the local font is missing. */
CheckForMissingGlyphs(false);
/* Initialise the palette. The biggest step is 'faking' some recolour sprites.
* This way the mauve and gray colours work and we can show the user interface. */
GfxInitPalettes();
static const int offsets[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0, 0, 0x04, 0x08 };
for (uint i = 0; i != 16; i++) {
for (int j = 0; j < 8; j++) {
_colour_gradient[i][j] = offsets[i] + j;
}
}
/* Finally ask the question. */
new BootstrapBackground();
new BootstrapAskForDownloadWindow();
/* Process the user events. */
_video_driver->MainLoop();
/* _exit_game is used to get out of the video driver's main loop.
* In case GM_BOOTSTRAP is still set we did not exit it via the
* "download complete" event, so it was a manual exit. Obey it. */
_exit_game = _game_mode == GM_BOOTSTRAP;
if (_exit_game) return false;
/* Try to probe the graphics. Should work this time. */
if (!BaseGraphics::SetSet(NULL)) goto failure;
/* Finally we can continue heading for the menu. */
_game_mode = GM_MENU;
return true;
#endif
/* Failure to get enough working to get a graphics set. */
failure:
usererror("Failed to find a graphics set. Please acquire a graphics set for OpenTTD. See section 4.1 of readme.txt.");
return false;
}
/** Actually load the sprite tables. */
static void LoadSpriteTables()
{
memset(_palette_remap_grf, 0, sizeof(_palette_remap_grf));
uint i = FIRST_GRF_SLOT;
const GraphicsSet *used_set = BaseGraphics::GetUsedSet();
_palette_remap_grf[i] = (PAL_DOS != used_set->palette);
LoadGrfFile(used_set->files[GFT_BASE].filename, 0, i++);
/*
* 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).
*/
_palette_remap_grf[i] = (PAL_DOS != used_set->palette);
LoadGrfFile(used_set->files[GFT_LOGOS].filename, 4793, i++);
/*
* 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 != LT_TEMPERATE) {
_palette_remap_grf[i] = (PAL_DOS != used_set->palette);
LoadGrfFileIndexed(
used_set->files[GFT_ARCTIC + _settings_game.game_creation.landscape - 1].filename,
_landscape_spriteindexes[_settings_game.game_creation.landscape - 1],
i++
);
}
/* Initialize the unicode to sprite mapping table */
InitializeUnicodeGlyphMap();
/*
* Load the base 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.
*/
GRFConfig *top = _grfconfig;
GRFConfig *master = new GRFConfig(used_set->files[GFT_EXTRA].filename);
/* We know the palette of the base set, so if the base NewGRF is not
* setting one, use the palette of the base set and not the global
* one which might be the wrong palette for this base NewGRF.
* The value set here might be overridden via action14 later. */
switch (used_set->palette) {
case PAL_DOS: master->palette |= GRFP_GRF_DOS; break;
case PAL_WINDOWS: master->palette |= GRFP_GRF_WINDOWS; break;
default: break;
}
FillGRFDetails(master, false, BASESET_DIR);
ClrBit(master->flags, GCF_INIT_ONLY);
master->next = top;
_grfconfig = master;
LoadNewGRF(SPR_NEWGRFS_BASE, i);
/* Free and remove the top element. */
delete master;
_grfconfig = top;
}
