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detection.cpp

/* 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-1-2-1/engines/draci/detection.cpp $
 * $Id: detection.cpp 51707 2010-08-03 17:09:27Z spalek $
 *
 */

#include "draci/draci.h"
#include "draci/saveload.h"

#include "base/plugins.h"
#include "common/system.h"
#include "engines/advancedDetector.h"
#include "engines/metaengine.h"

static const PlainGameDescriptor draciGames[] = {
      { "draci", "Draci Historie" },
      { 0, 0 }
};

namespace Draci {

using Common::GUIO_NONE;

const ADGameDescription gameDescriptions[] = {
      {
            "draci",
            0,
            AD_ENTRY1s("INIT.DFW", "b890a5aeebaf16af39219cba2416b0a3", 906),
            Common::EN_ANY,
            Common::kPlatformPC,
            ADGF_NO_FLAGS,
            GUIO_NONE
      },

      {
            "draci",
            0,
            AD_ENTRY1s("INIT.DFW", "9921c8f0045679a8f37eca8d41c5ec02", 906),
            Common::CZ_CZE,
            Common::kPlatformPC,
            ADGF_NO_FLAGS,
            GUIO_NONE
      },

      {
            "draci",
            0,
            AD_ENTRY1s("INIT.DFW", "76b9b78a8a8809a240acc395df4d0715", 906),
            Common::PL_POL,
            Common::kPlatformPC,
            ADGF_NO_FLAGS,
            GUIO_NONE
      },

      {
            "draci",
            0,
            AD_ENTRY1s("INIT.DFW", "9a7115b91cdea361bcaff3e046ac7ded", 906),
            Common::DE_DEU,
            Common::kPlatformPC,
            ADGF_NO_FLAGS,
            GUIO_NONE
      },

      AD_TABLE_END_MARKER
};

} // End of namespace Draci

const ADParams detectionParams = {
      // Pointer to ADGameDescription or its superset structure
      (const byte *)Draci::gameDescriptions,
      // Size of that superset structure
      sizeof(ADGameDescription),
      // Number of bytes to compute MD5 sum for
      5000,
      // List of all engine targets
      draciGames,
      // Structure for autoupgrading obsolete targets
      0,
      // Name of single gameid (optional)
      "draci",
      // List of files for file-based fallback detection (optional)
      0,
      // Flags
      0,
      // Global GUI options
      Common::GUIO_NONE,
      // Maximum directory depth
      1,
      // List of directory globs
      0
};

00114 class DraciMetaEngine : public AdvancedMetaEngine {
public:
      DraciMetaEngine() : AdvancedMetaEngine(detectionParams) {}

00118       virtual const char *getName() const {
            return "Draci Historie Engine";
      }

00122       virtual const char *getOriginalCopyright() const {
            return "Copyright (C) 1995 NoSense";
      }

      virtual bool hasFeature(MetaEngineFeature f) const;
00127       virtual int getMaximumSaveSlot() const { return 99; }
      virtual SaveStateList listSaves(const char *target) const;
      virtual void removeSaveState(const char *target, int slot) const;
      virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
      virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
};

00134 bool DraciMetaEngine::hasFeature(MetaEngineFeature f) const {
      return
            (f == kSupportsListSaves) ||
            (f == kSupportsDeleteSave) ||
            (f == kSavesSupportMetaInfo) ||
            (f == kSavesSupportThumbnail) ||
            (f == kSavesSupportCreationDate) ||
            (f == kSavesSupportPlayTime) ||
            (f == kSupportsLoadingDuringStartup);
}

00145 SaveStateList DraciMetaEngine::listSaves(const char *target) const {
      Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
      Common::StringArray filenames;
      Common::String pattern("draci.s??");

      filenames = saveFileMan->listSavefiles(pattern);
      sort(filenames.begin(), filenames.end()); // Sort (hopefully ensuring we are sorted numerically..)

      SaveStateList saveList;
      for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
            // Obtain the last 2 digits of the filename, since they correspond to the save slot
            int slotNum = atoi(file->c_str() + file->size() - 2);

            if (slotNum >= 0 && slotNum <= 99) {
                  Common::InSaveFile *in = saveFileMan->openForLoading(*file);
                  if (in) {
                        Draci::DraciSavegameHeader header;
                        if (Draci::readSavegameHeader(in, header)) {
                              saveList.push_back(SaveStateDescriptor(slotNum, header.saveName));
                              if (header.thumbnail) {
                                    header.thumbnail->free();
                                    delete header.thumbnail;
                              }
                        }
                        delete in;
                  }
            }
      }

      return saveList;
}

00177 void DraciMetaEngine::removeSaveState(const char *target, int slot) const {
      g_system->getSavefileManager()->removeSavefile(Draci::DraciEngine::getSavegameFile(slot));
}

00181 SaveStateDescriptor DraciMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
      Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(
            Draci::DraciEngine::getSavegameFile(slot));
      assert(f);

      Draci::DraciSavegameHeader header;
      Draci::readSavegameHeader(f, header);
      delete f;

      // Create the return descriptor
      SaveStateDescriptor desc(slot, header.saveName);
      desc.setDeletableFlag(true);
      desc.setWriteProtectedFlag(false);
      desc.setThumbnail(header.thumbnail);

      int day = (header.date >> 24) & 0xFF;
      int month = (header.date >> 16) & 0xFF;
      int year = header.date & 0xFFFF;
      desc.setSaveDate(year, month, day);

      int hour = (header.time >> 8) & 0xFF;
      int minutes = header.time & 0xFF;
      desc.setSaveTime(hour, minutes);

      minutes = header.playtime / 60;
      hour = minutes / 60;
      minutes %= 60;
      desc.setPlayTime(hour, minutes);

      return desc;
}

bool DraciMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
      if (desc) {
            *engine = new Draci::DraciEngine(syst, desc);
      }
      return desc != 0;
}

#if PLUGIN_ENABLED_DYNAMIC(DRACI)
      REGISTER_PLUGIN_DYNAMIC(DRACI, PLUGIN_TYPE_ENGINE, DraciMetaEngine);
#else
      REGISTER_PLUGIN_STATIC(DRACI, PLUGIN_TYPE_ENGINE, DraciMetaEngine);
#endif

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