mirror of
https://github.com/libretro/scummvm.git
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139 lines
4.0 KiB
C++
139 lines
4.0 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/system.h"
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#include "common/savefile.h"
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#include "common/algorithm.h"
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#include "base/plugins.h"
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#include "engines/advancedDetector.h"
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#include "teenagent/resources.h"
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#include "teenagent/teenagent.h"
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#include "graphics/thumbnail.h"
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enum {
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MAX_SAVES = 20
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};
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class TeenAgentMetaEngine : public AdvancedMetaEngine {
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public:
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const char *getName() const override {
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return "teenagent";
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}
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bool hasFeature(MetaEngineFeature f) const override {
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switch (f) {
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case kSupportsListSaves:
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case kSupportsDeleteSave:
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case kSupportsLoadingDuringStartup:
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case kSavesSupportMetaInfo:
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case kSavesSupportThumbnail:
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return true;
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default:
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return false;
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}
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}
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Common::Error createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const override {
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*engine = new TeenAgent::TeenAgentEngine(syst, desc);
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return Common::kNoError;
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}
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Common::String getSavegameFile(int saveGameIdx, const char *target) const override {
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if (!target)
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target = getName();
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if (saveGameIdx == kSavegameFilePattern)
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return Common::String::format("%s.##", target);
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else
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return Common::String::format("%s.%02d", target, saveGameIdx);
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}
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SaveStateList listSaves(const char *target) const override {
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Common::String pattern = target;
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pattern += ".##";
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Common::StringArray filenames = g_system->getSavefileManager()->listSavefiles(pattern);
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SaveStateList saveList;
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for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
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int slot = atoi(file->c_str() + file->size() - 2);
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if (slot >= 0 && slot < MAX_SAVES) {
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Common::ScopedPtr<Common::InSaveFile> in(g_system->getSavefileManager()->openForLoading(*file));
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if (!in)
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continue;
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char buf[25];
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in->seek(0);
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in->read(buf, 24);
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buf[24] = 0;
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saveList.push_back(SaveStateDescriptor(this, slot, buf));
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}
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}
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// Sort saves based on slot number.
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Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
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return saveList;
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}
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int getMaximumSaveSlot() const override {
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return MAX_SAVES - 1;
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}
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void removeSaveState(const char *target, int slot) const override {
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g_system->getSavefileManager()->removeSavefile(getSavegameFile(slot, target));
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}
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SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const override {
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Common::String filename = getSavegameFile(slot, target);
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Common::ScopedPtr<Common::InSaveFile> in(g_system->getSavefileManager()->openForLoading(filename));
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if (!in)
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return SaveStateDescriptor();
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char buf[25];
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in->seek(0);
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in->read(buf, 24);
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buf[24] = 0;
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Common::String desc = buf;
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in->seek(TeenAgent::saveStateSize);
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if (!Graphics::checkThumbnailHeader(*in))
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return SaveStateDescriptor(this, slot, desc);
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SaveStateDescriptor ssd(this, slot, desc);
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//checking for the thumbnail
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Graphics::Surface *thumbnail;
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if (!Graphics::loadThumbnail(*in, thumbnail)) {
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return SaveStateDescriptor();
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}
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ssd.setThumbnail(thumbnail);
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return ssd;
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}
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};
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#if PLUGIN_ENABLED_DYNAMIC(TEENAGENT)
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REGISTER_PLUGIN_DYNAMIC(TEENAGENT, PLUGIN_TYPE_ENGINE, TeenAgentMetaEngine);
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#else
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REGISTER_PLUGIN_STATIC(TEENAGENT, PLUGIN_TYPE_ENGINE, TeenAgentMetaEngine);
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#endif
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