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Diffstat (limited to 'engines/avalanche/detection.cpp')
| -rw-r--r-- | engines/avalanche/detection.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/engines/avalanche/detection.cpp b/engines/avalanche/detection.cpp new file mode 100644 index 0000000000..5f4f03a78b --- /dev/null +++ b/engines/avalanche/detection.cpp @@ -0,0 +1,209 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +/* + * This code is based on the original source code of Lord Avalot d'Argent version 1.3. + * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman. + */ + +#include "avalanche/avalanche.h" + +#include "common/system.h" +#include "common/savefile.h" + +#include "engines/advancedDetector.h" +#include "graphics/thumbnail.h" + +namespace Avalanche { + +uint32 AvalancheEngine::getFeatures() const { + return _gameDescription->desc.flags; +} + +const char *AvalancheEngine::getGameId() const { + return _gameDescription->desc.gameid; +} + +static const PlainGameDescriptor avalancheGames[] = { + {"avalanche", "Lord Avalot d'Argent"}, + {0, 0} +}; + +static const ADGameDescription gameDescriptions[] = { + { + "avalanche", 0, + { + {"avalot.sez", 0, "de10eb353228013da3d3297784f81ff9", 48763}, + {"mainmenu.avd", 0, "89f31211af579a872045b175cc264298", 18880}, + AD_LISTEND + }, + Common::EN_ANY, + Common::kPlatformDOS, + ADGF_NO_FLAGS, + GUIO0() + }, + + AD_TABLE_END_MARKER +}; + +class AvalancheMetaEngine : public AdvancedMetaEngine { +public: + AvalancheMetaEngine() : AdvancedMetaEngine(gameDescriptions, sizeof(AvalancheGameDescription), avalancheGames) { + } + + const char *getName() const { + return "Avalanche"; + } + + const char *getOriginalCopyright() const { + return "Avalanche Engine Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman."; + } + + bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const; + bool hasFeature(MetaEngineFeature f) const; + + int getMaximumSaveSlot() const { return 99; } + SaveStateList listSaves(const char *target) const; + void removeSaveState(const char *target, int slot) const; + SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const; +}; + +bool AvalancheMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const { + if (gd) + *engine = new AvalancheEngine(syst, (const AvalancheGameDescription *)gd); + return gd != 0; +} + +bool AvalancheMetaEngine::hasFeature(MetaEngineFeature f) const { + return + (f == kSupportsListSaves) || + (f == kSupportsDeleteSave) || + (f == kSupportsLoadingDuringStartup) || + (f == kSavesSupportMetaInfo) || + (f == kSavesSupportThumbnail); +} + +SaveStateList AvalancheMetaEngine::listSaves(const char *target) const { + Common::SaveFileManager *saveFileMan = g_system->getSavefileManager(); + Common::StringArray filenames; + Common::String pattern = target; + pattern.toUppercase(); + pattern += ".???"; + + filenames = saveFileMan->listSavefiles(pattern); + sort(filenames.begin(), filenames.end()); // Sort (hopefully ensuring we are sorted numerically..) + + SaveStateList saveList; + for (Common::StringArray::const_iterator filename = filenames.begin(); filename != filenames.end(); ++filename) { + const Common::String &fname = *filename; + int slotNum = atoi(fname.c_str() + fname.size() - 3); + if (slotNum >= 0 && slotNum <= getMaximumSaveSlot()) { + Common::InSaveFile *file = saveFileMan->openForLoading(fname); + if (file) { + // Check for our signature. + uint32 signature = file->readUint32LE(); + if (signature != MKTAG('A', 'V', 'A', 'L')) { + warning("Savegame of incompatible type!"); + delete file; + continue; + } + + // Check version. + byte saveVersion = file->readByte(); + if (saveVersion > kSavegameVersion) { + warning("Savegame of incompatible version!"); + delete file; + continue; + } + + // Read name. + uint32 nameSize = file->readUint32LE(); + if (nameSize >= 255) { + delete file; + continue; + } + char *name = new char[nameSize + 1]; + file->read(name, nameSize); + name[nameSize] = 0; + + saveList.push_back(SaveStateDescriptor(slotNum, name)); + delete[] name; + delete file; + } + } + } + + return saveList; +} + +void AvalancheMetaEngine::removeSaveState(const char *target, int slot) const { + Common::String fileName = Common::String::format("%s.%03d", target, slot); + g_system->getSavefileManager()->removeSavefile(fileName); +} + +SaveStateDescriptor AvalancheMetaEngine::querySaveMetaInfos(const char *target, int slot) const { + Common::String fileName = Common::String::format("%s.%03d", target, slot); + Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(fileName); + + if (f) { + // Check for our signature. + uint32 signature = f->readUint32LE(); + if (signature != MKTAG('A', 'V', 'A', 'L')) { + warning("Savegame of incompatible type!"); + delete f; + return SaveStateDescriptor(); + } + + // Check version. + byte saveVersion = f->readByte(); + if (saveVersion > kSavegameVersion) { + warning("Savegame of a too recent version!"); + delete f; + return SaveStateDescriptor(); + } + + // Read the description. + uint32 descSize = f->readUint32LE(); + Common::String description; + for (uint32 i = 0; i < descSize; i++) { + char actChar = f->readByte(); + description += actChar; + } + + SaveStateDescriptor desc(slot, description); + + Graphics::Surface *const thumbnail = Graphics::loadThumbnail(*f); + desc.setThumbnail(thumbnail); + + delete f; + return desc; + } + return SaveStateDescriptor(); +} + +} // End of namespace Avalanche + +#if PLUGIN_ENABLED_DYNAMIC(AVALANCHE) + REGISTER_PLUGIN_DYNAMIC(AVALANCHE, PLUGIN_TYPE_ENGINE, Avalanche::AvalancheMetaEngine); +#else + REGISTER_PLUGIN_STATIC(AVALANCHE, PLUGIN_TYPE_ENGINE, Avalanche::AvalancheMetaEngine); +#endif |