/* $Id$ */ /** @file gfxinit.cpp Initializing of the (GRF) graphics. */ #include "stdafx.h" #include "debug.h" #include "spritecache.h" #include "fileio_func.h" #include "fios.h" #include "newgrf.h" #include "md5.h" #include "fontcache.h" #include "gfx_func.h" #include "settings_type.h" #include "string_func.h" #include "ini_type.h" #include "table/sprites.h" #include "table/palette_convert.h" /** The currently used palette */ PaletteType _use_palette = PAL_AUTODETECT; /** Whether the given NewGRFs must get a palette remap or not. */ bool _palette_remap_grf[MAX_FILE_SLOTS]; /** Palette map to go from the !_use_palette to the _use_palette */ const byte *_palette_remap = NULL; /** Palette map to go from the _use_palette to the !_use_palette */ const byte *_palette_reverse_remap = NULL; char *_ini_graphics_set; /** Structure holding filename and MD5 information about a single file */ struct MD5File { const char *filename; ///< filename uint8 hash[16]; ///< md5 sum of the file const char *missing_warning; ///< warning when this file is missing }; /** Types of graphics in the base graphics set */ enum GraphicsFileType { GFT_BASE, ///< Base sprites for all climates GFT_LOGOS, ///< Logos, landscape icons and original terrain generator sprites GFT_ARCTIC, ///< Landscape replacement sprites for arctic GFT_TROPICAL, ///< Landscape replacement sprites for tropical GFT_TOYLAND, ///< Landscape replacement sprites for toyland GFT_EXTRA, ///< Extra sprites that were not part of the original sprites MAX_GFT ///< We are looking for this amount of GRFs }; /** Information about a single graphics set. */ struct GraphicsSet { const char *name; ///< The name of the graphics set const char *description; ///< Description of the graphics set uint32 shortname; ///< Four letter short variant of the name uint32 version; ///< The version of this graphics set PaletteType palette; ///< Palette of this graphics set MD5File files[MAX_GFT]; ///< All GRF files part of this set uint found_grfs; ///< Number of the GRFs that could be found GraphicsSet *next; ///< The next graphics set in this list /** Free everything we allocated */ ~GraphicsSet() { free((void*)this->name); free((void*)this->description); for (uint i = 0; i < MAX_GFT; i++) { free((void*)this->files[i].filename); free((void*)this->files[i].missing_warning); } delete this->next; } }; /** All graphics sets currently available */ static GraphicsSet *_available_graphics_sets = NULL; /** The one and only graphics set that is currently being used. */ static const GraphicsSet *_used_graphics_set = NULL; #include "table/files.h" #include "table/landscape_sprite.h" static const SpriteID * const _landscape_spriteindexes[] = { _landscape_spriteindexes_1, _landscape_spriteindexes_2, _landscape_spriteindexes_3, }; static uint LoadGrfFile(const char *filename, uint load_index, int file_index) { uint load_index_org = load_index; uint sprite_id = 0; FioOpenFile(file_index, filename); DEBUG(sprite, 2, "Reading grf-file '%s'", filename); while (LoadNextSprite(load_index, file_index, sprite_id)) { load_index++; sprite_id++; if (load_index >= MAX_SPRITES) { usererror("Too many sprites. Recompile with higher MAX_SPRITES value or remove some custom GRF files."); } } DEBUG(sprite, 2, "Currently %i sprites are loaded", load_index); return load_index - load_index_org; } void LoadSpritesIndexed(int file_index, uint *sprite_id, const SpriteID *index_tbl) { uint start; while ((start = *index_tbl++) != END) { uint end = *index_tbl++; do { bool b = LoadNextSprite(start, file_index, *sprite_id); assert(b); (*sprite_id)++; } while (++start <= end); } } static void LoadGrfIndexed(const char *filename, const SpriteID *index_tbl, int file_index) { uint sprite_id = 0; FioOpenFile(file_index, filename); DEBUG(sprite, 2, "Reading indexed grf-file '%s'", filename); LoadSpritesIndexed(file_index, &sprite_id, index_tbl); } /** * Calculate and check the MD5 hash of the supplied filename. * @param file filename and expected MD5 hash for the given filename. * @return true if the checksum is correct. */ static bool FileMD5(const MD5File file) { size_t size; FILE *f = FioFOpenFile(file.filename, "rb", DATA_DIR, &size); if (f != NULL) { Md5 checksum; uint8 buffer[1024]; uint8 digest[16]; size_t len; while ((len = fread(buffer, 1, (size > sizeof(buffer)) ? sizeof(buffer) : size, f)) != 0 && size != 0) { size -= len; checksum.Append(buffer, len); } FioFCloseFile(f); checksum.Finish(digest); return memcmp(file.hash, digest, sizeof(file.hash)) == 0; } else { // file not found return false; } } /** * Determine the graphics pack that has to be used. * The one with the most correct files wins. */ static bool DetermineGraphicsPack() { if (_used_graphics_set != NULL) return true; const GraphicsSet *best = _available_graphics_sets; for (const GraphicsSet *c = _available_graphics_sets; c != NULL; c = c->next) { if (best->found_grfs < c->found_grfs || (best->found_grfs == c->found_grfs && ( (best->shortname == c->shortname && best->version < c->version) || (best->palette != _use_palette && c->palette == _use_palette)))) { best = c; } } _used_graphics_set = best; return _used_graphics_set != NULL; } extern void UpdateNewGRFConfigPalette(); /** * Determine the palette that has to be used. * - forced palette via command line -> leave it that way * - otherwise -> palette based on the graphics pack */ static void DeterminePalette() { assert(_used_graphics_set != NULL); if (_use_palette >= MAX_PAL) _use_palette = _used_graphics_set->palette; switch (_use_palette) { case PAL_DOS: _palette_remap = _palmap_w2d; _palette_reverse_remap = _palmap_d2w; break; case PAL_WINDOWS: _palette_remap = _palmap_d2w; _palette_reverse_remap = _palmap_w2d; break; default: NOT_REACHED(); } UpdateNewGRFConfigPalette(); } /** * Checks whether the MD5 checksums of the files are correct. * * @note Also checks sample.cat and other required non-NewGRF GRFs for corruption. */ void CheckExternalFiles() { DeterminePalette(); DEBUG(grf, 1, "Using the %s base graphics set with the %s palette", _used_graphics_set->name, _use_palette == PAL_DOS ? "DOS" : "Windows"); static const size_t ERROR_MESSAGE_LENGTH = 128; char error_msg[ERROR_MESSAGE_LENGTH * (MAX_GFT + 1)]; error_msg[0] = '\0'; char *add_pos = error_msg; const char *last = lastof(error_msg); for (uint i = 0; i < lengthof(_used_graphics_set->files); i++) { if (!FileMD5(_used_graphics_set->files[i])) { add_pos += seprintf(add_pos, last, "Your '%s' file is corrupted or missing! %s\n", _used_graphics_set->files[i].filename, _used_graphics_set->files[i].missing_warning); } } bool sound = false; for (uint i = 0; !sound && i < lengthof(_sound_sets); i++) { sound = FileMD5(_sound_sets[i]); } if (!sound) { add_pos += seprintf(add_pos, last, "Your 'sample.cat' file is corrupted or missing! You can find 'sample.cat' on your Transport Tycoon Deluxe CD-ROM.\n"); } if (add_pos != error_msg) ShowInfoF(error_msg); } static void LoadSpriteTables() { memset(_palette_remap_grf, 0, sizeof(_palette_remap_grf)); uint i = FIRST_GRF_SLOT; _palette_remap_grf[i] = (_use_palette != _used_graphics_set->palette); LoadGrfFile(_used_graphics_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] = (_use_palette != _used_graphics_set->palette); LoadGrfFile(_used_graphics_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] = (_use_palette != _used_graphics_set->palette); LoadGrfIndexed( _used_graphics_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 = CallocT<GRFConfig>(1); master->filename = strdup(_used_graphics_set->files[GFT_EXTRA].filename); FillGRFDetails(master, false); master->windows_paletted = (_used_graphics_set->palette == PAL_WINDOWS); ClrBit(master->flags, GCF_INIT_ONLY); master->next = top; _grfconfig = master; LoadNewGRF(SPR_NEWGRFS_BASE, i); /* Free and remove the top element. */ ClearGRFConfig(&master); _grfconfig = top; } void GfxLoadSprites() { DEBUG(sprite, 2, "Loading sprite set %d", _settings_game.game_creation.landscape); GfxInitSpriteMem(); LoadSpriteTables(); GfxInitPalettes(); } /** * Try to read a single piece of metadata and return false if it doesn't exist. * @param name the name of the item to fetch. */ #define fetch_metadata(name) \ item = metadata->GetItem(name, false); \ if (item == NULL || strlen(item->value) == 0) { \ DEBUG(grf, 0, "Base graphics set detail loading: %s field missing", name); \ return false; \ } /** Names corresponding to the GraphicsFileType */ static const char *_gft_names[MAX_GFT] = { "base", "logos", "arctic", "tropical", "toyland", "extra" }; /** * Read the graphics set information from a loaded ini. * @param graphics the graphics set to write to * @param ini the ini to read from * @param path the path to this ini file (for filenames) * @return true if loading was successful. */ static bool FillGraphicsSetDetails(GraphicsSet *graphics, IniFile *ini, const char *path) { memset(graphics, 0, sizeof(*graphics)); IniGroup *metadata = ini->GetGroup("metadata"); IniItem *item; fetch_metadata("name"); graphics->name = strdup(item->value); fetch_metadata("description"); graphics->description = strdup(item->value); fetch_metadata("shortname"); for (uint i = 0; item->value[i] != '\0' && i < 4; i++) { graphics->shortname |= ((uint8)item->value[i]) << (i * 8); } fetch_metadata("version"); graphics->version = atoi(item->value); fetch_metadata("palette"); graphics->palette = (*item->value == 'D' || *item->value == 'd') ? PAL_DOS : PAL_WINDOWS; /* For each of the graphics file types we want to find the file, MD5 checksums and warning messages. */ IniGroup *files = ini->GetGroup("files"); IniGroup *md5s = ini->GetGroup("md5s"); IniGroup *origin = ini->GetGroup("origin"); for (uint i = 0; i < MAX_GFT; i++) { MD5File *file = &graphics->files[i]; /* Find the filename first. */ item = files->GetItem(_gft_names[i], false); if (item == NULL) { DEBUG(grf, 0, "No graphics file for: %s", _gft_names[i]); return false; } const char *filename = item->value; file->filename = MallocT<char>(strlen(filename) + strlen(path) + 1); sprintf((char*)file->filename, "%s%s", path, filename); /* Then find the MD5 checksum */ item = md5s->GetItem(filename, false); if (item == NULL) { DEBUG(grf, 0, "No MD5 checksum specified for: %s", filename); return false; } char *c = item->value; for (uint i = 0; i < sizeof(file->hash) * 2; i++, c++) { uint j; if ('0' <= *c && *c <= '9') { j = *c - '0'; } else if ('a' <= *c && *c <= 'f') { j = *c - 'a' + 10; } else if ('A' <= *c && *c <= 'F') { j = *c - 'A' + 10; } else { DEBUG(grf, 0, "Malformed MD5 checksum specified for: %s", filename); return false; } if (i % 2 == 0) { file->hash[i / 2] = j << 4; } else { file->hash[i / 2] |= j; } } /* Then find the warning message when the file's missing */ item = origin->GetItem(filename, false); if (item == NULL) item = origin->GetItem("default", false); if (item == NULL) { DEBUG(grf, 1, "No origin warning message specified for: %s", filename); file->missing_warning = strdup(""); } else { file->missing_warning = strdup(item->value); } if (FileMD5(*file)) graphics->found_grfs++; } return true; } /** Helper for scanning for files with GRF as extension */ class OBGFileScanner : FileScanner { public: /* virtual */ bool AddFile(const char *filename, size_t basepath_length); /** Do the scan for OBGs. */ static uint DoScan() { OBGFileScanner fs; return fs.Scan(".obg", DATA_DIR); } }; /** * Try to add a graphics set with the given filename. * @param filename the full path to the file to read * @param basepath_length amount of characters to chop of before to get a relative DATA_DIR filename * @return true if the file is added. */ bool OBGFileScanner::AddFile(const char *filename, size_t basepath_length) { bool ret = false; DEBUG(grf, 1, "Found %s as base graphics set", filename); GraphicsSet *graphics = new GraphicsSet();; IniFile *ini = new IniFile(); ini->LoadFromDisk(filename); char *path = strdup(filename + basepath_length); char *psep = strrchr(path, PATHSEPCHAR); if (psep != NULL) { psep[1] = '\0'; } else { *path = '\0'; } if (FillGraphicsSetDetails(graphics, ini, path)) { bool duplicate = false; for (const GraphicsSet *c = _available_graphics_sets; !duplicate && c != NULL; c = c->next) { duplicate = (strcmp(c->name, graphics->name) == 0 || c->shortname == graphics->shortname) && c->version == graphics->version; } if (duplicate) { delete graphics; } else { graphics->next = _available_graphics_sets; _available_graphics_sets = graphics; ret = true; } } else { delete graphics; } free(path); delete ini; return ret; } /** Scan for all Grahpics sets */ void FindGraphicsSets() { DEBUG(grf, 1, "Scanning for Graphics sets"); OBGFileScanner::DoScan(); } /** * Set the graphics set to be used. * @param name of the graphics set to use * @return true if it could be loaded */ bool SetGraphicsSet(const char *name) { if (StrEmpty(name)) { if (!DetermineGraphicsPack()) return false; CheckExternalFiles(); return true; } for (const GraphicsSet *g = _available_graphics_sets; g != NULL; g = g->next) { if (strcmp(name, g->name) == 0) { _used_graphics_set = g; CheckExternalFiles(); return true; } } return false; } /** * Returns a list with the graphics sets. * @param p where to print to * @param last the last character to print to * @return the last printed character */ char *GetGraphicsSetsList(char *p, const char *last) { p += seprintf(p, last, "List of graphics sets:\n"); for (const GraphicsSet *g = _available_graphics_sets; g != NULL; g = g->next) { if (g->found_grfs <= 1) continue; p += seprintf(p, last, "%18s: %s", g->name, g->description); int difference = MAX_GFT - g->found_grfs; if (difference != 0) { p += seprintf(p, last, " (missing %i file%s)\n", difference, difference == 1 ? "" : "s"); } else { p += seprintf(p, last, "\n"); } } p += seprintf(p, last, "\n"); return p; } #if defined(ENABLE_NETWORK) #include "network/network_content.h" /** * Check whether we have an graphics with the exact characteristics as ci. * @param ci the characteristics to search on (shortname and md5sum) * @param md5sum whether to check the MD5 checksum * @return true iff we have an graphics set matching. */ bool HasGraphicsSet(const ContentInfo *ci, bool md5sum) { assert(ci->type == CONTENT_TYPE_BASE_GRAPHICS); for (const GraphicsSet *g = _available_graphics_sets; g != NULL; g = g->next) { if (g->found_grfs <= 1) continue; if (g->shortname != ci->unique_id) continue; if (!md5sum) return true; byte md5[16]; memset(md5, 0, sizeof(md5)); for (uint i = 0; i < MAX_GFT; i++) { for (uint j = 0; j < sizeof(md5); j++) { md5[j] ^= g->files[i].hash[j]; } } if (memcmp(md5, ci->md5sum, sizeof(md5)) == 0) return true; } return false; } #endif /* ENABLE_NETWORK */