mirror of
https://github.com/libretro/scummvm.git
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124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/translation.h"
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#include "common/savefile.h"
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#include "common/system.h"
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#include "m4/metaengine.h"
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#include "m4/detection.h"
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#include "m4/burger/burger.h"
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#include "m4/riddle/riddle.h"
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namespace M4 {
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static const ADExtraGuiOptionsMap optionsList[] = {
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{
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GAMEOPTION_ORIGINAL_SAVELOAD,
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{
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_s("Use original save/load screens"),
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_s("Use the original save/load screens instead of the ScummVM ones"),
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"original_menus",
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false,
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0,
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0
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}
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},
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AD_EXTRA_GUI_OPTIONS_TERMINATOR
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};
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} // End of namespace M4
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const char *M4MetaEngine::getName() const {
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return "m4";
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}
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const ADExtraGuiOptionsMap *M4MetaEngine::getAdvancedExtraGuiOptions() const {
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return M4::optionsList;
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}
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Common::Error M4MetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
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const M4::M4GameDescription *gd = (const M4::M4GameDescription *)desc;
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switch (gd->gameType) {
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case M4::GType_Burger:
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*engine = new M4::Burger::BurgerEngine(syst, gd);
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break;
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case M4::GType_Riddle:
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*engine = new M4::Riddle::RiddleEngine(syst, gd);
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break;
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default:
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return Common::kUnsupportedGameidError;
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}
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return Common::kNoError;
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}
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bool M4MetaEngine::hasFeature(MetaEngineFeature f) const {
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return checkExtendedSaves(f) ||
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(f == kSupportsLoadingDuringStartup);
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}
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SaveStateDescriptor M4MetaEngine::querySaveMetaInfos(const char *target, int slot) const {
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Common::String saveName = Common::String::format("%s.%03u", target, slot);
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Common::InSaveFile *save = getOriginalSave(saveName);
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if (save) {
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save->skip(4);
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char saveDesc[32];
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save->read(saveDesc, 32);
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saveDesc[31] = '\0';
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delete save;
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SaveStateDescriptor desc(this, slot, saveDesc);
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return desc;
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} else {
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return AdvancedMetaEngine::querySaveMetaInfos(target, slot);
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}
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}
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Common::InSaveFile *M4MetaEngine::getOriginalSave(const Common::String &saveName) const {
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Common::InSaveFile *save = g_system->getSavefileManager()->openForLoading(saveName);
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char name[16];
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if (save) {
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if (save->seek(-44, SEEK_END) && save->read(name, 7) == 7 &&
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!strncmp(name, "MIRROR", 7)) {
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save->seek(0);
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return save;
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} else if (save->seek(-44, SEEK_END) && save->read(name, 7) == 7 &&
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!strncmp(name, "FAUCET ", 7)) {
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save->seek(0);
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return save;
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}
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delete save;
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}
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return nullptr;
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}
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#if PLUGIN_ENABLED_DYNAMIC(M4)
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REGISTER_PLUGIN_DYNAMIC(M4, PLUGIN_TYPE_ENGINE, M4MetaEngine);
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#else
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REGISTER_PLUGIN_STATIC(M4, PLUGIN_TYPE_ENGINE, M4MetaEngine);
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#endif
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