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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/cine/detection.cpp $
 * $Id: detection.cpp 50944 2010-07-16 21:56:30Z fingolfin $
 *
 */

#include "base/plugins.h"

#include "engines/advancedDetector.h"
#include "common/system.h"

#include "cine/cine.h"
#include "cine/various.h"

namespace Cine {

00036 struct CINEGameDescription {
      ADGameDescription desc;

      int gameType;
      uint32 features;
};

int CineEngine::getGameType() const { return _gameDescription->gameType; }
uint32 CineEngine::getFeatures() const { return _gameDescription->features; }
Common::Language CineEngine::getLanguage() const { return _gameDescription->desc.language; }
Common::Platform CineEngine::getPlatform() const { return _gameDescription->desc.platform; }

} // End of namespace Cine

static const PlainGameDescriptor cineGames[] = {
      {"cine", "Cinematique evo.1 engine game"},
      {"fw", "Future Wars"},
      {"os", "Operation Stealth"},
      {0, 0}
};

static const ADObsoleteGameID obsoleteGameIDsTable[] = {
      {"fw", "cine", Common::kPlatformUnknown},
      {"os", "cine", Common::kPlatformUnknown},
      {0, 0, Common::kPlatformUnknown}
};

#include "cine/detection_tables.h"

static const ADParams detectionParams = {
      // Pointer to ADGameDescription or its superset structure
      (const byte *)Cine::gameDescriptions,
      // Size of that superset structure
      sizeof(Cine::CINEGameDescription),
      // Number of bytes to compute MD5 sum for
      5000,
      // List of all engine targets
      cineGames,
      // Structure for autoupgrading obsolete targets
      obsoleteGameIDsTable,
      // Name of single gameid (optional)
      "cine",
      // List of files for file-based fallback detection (optional)
      0,
      // Flags
      0,
      // Additional GUI options (for every game}
      Common::GUIO_NOSPEECH | Common::GUIO_NOMIDI,
      // Maximum directory depth
      1,
      // List of directory globs
      0
};

00090 class CineMetaEngine : public AdvancedMetaEngine {
public:
      CineMetaEngine() : AdvancedMetaEngine(detectionParams) {}

00094       virtual const char *getName() const {
            return "Cinematique evo 1 engine";
      }

00098       virtual const char *getOriginalCopyright() const {
            return "Future Wars & Operation Stealth (C) Delphine Software";
      }

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

00109 bool CineMetaEngine::hasFeature(MetaEngineFeature f) const {
      return
            (f == kSupportsListSaves) ||
            (f == kSupportsLoadingDuringStartup) ||
            (f == kSupportsDeleteSave);
}

00116 bool Cine::CineEngine::hasFeature(EngineFeature f) const {
      return
            (f == kSupportsRTL) ||
            (f == kSupportsLoadingDuringRuntime) ||
            (f == kSupportsSavingDuringRuntime);
}

bool CineMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
      const Cine::CINEGameDescription *gd = (const Cine::CINEGameDescription *)desc;
      if (gd) {
            *engine = new Cine::CineEngine(syst, gd);
      }
      return gd != 0;
}

00131 SaveStateList CineMetaEngine::listSaves(const char *target) const {
      Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
      SaveStateList saveList;

      Common::String pattern = target;
      pattern += ".?";
      Common::StringArray filenames = saveFileMan->listSavefiles(pattern);
      sort(filenames.begin(), filenames.end());
      Common::StringArray::const_iterator file;

      Common::String filename = target;
      filename += ".dir";
      Common::InSaveFile *in = saveFileMan->openForLoading(filename);
      if (in) {
            typedef char CommandeType[20];
            CommandeType saveNames[10];

            // Initialize all savegames' descriptions to empty strings
            // so that if the savegames' descriptions can only be partially read from file
            // then the missing ones are correctly set to empty strings.
            memset(saveNames, 0, sizeof(saveNames));

            in->read(saveNames, 10 * 20);
            CommandeType saveDesc;

            for (file = filenames.begin(); file != filenames.end(); ++file) {
                  // Jump over savegame files that don't end with a digit (e.g. "fw.3" is ok, "fw.a" is not).
                  if (!isdigit(file->lastChar()))
                        continue;

                  // Obtain the last digit of the filename, since they correspond to the save slot
                  int slotNum = atoi(file->c_str() + file->size() - 1);

                  // Copy the savegame description making sure it ends with a trailing zero
                  strncpy(saveDesc, saveNames[slotNum], 20);
                  saveDesc[sizeof(CommandeType) - 1] = 0;

                  saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
            }
      }

      delete in;

      return saveList;
}

00177 int CineMetaEngine::getMaximumSaveSlot() const { return 9; }

00179 void CineMetaEngine::removeSaveState(const char *target, int slot) const {
      // Load savegame descriptions from index file
      typedef char CommandeType[20];
      CommandeType saveNames[10];

      // Initialize all savegames' descriptions to empty strings
      // so that if the savegames' descriptions can only be partially read from file
      // then the missing ones are correctly set to empty strings.
      memset(saveNames, 0, sizeof(saveNames));

      Common::InSaveFile *in;
      char tmp[80];

      snprintf(tmp, 80, "%s.dir", target);
      in = g_system->getSavefileManager()->openForLoading(tmp);

      if (!in)
            return;

      in->read(saveNames, 10 * 20);
      delete in;

      // Set description for selected slot
      char slotName[20];
      slotName[0] = 0;
      strncpy(saveNames[slot], slotName, 20);

      // Update savegame descriptions
      char indexFile[80];
      snprintf(indexFile, 80, "%s.dir", target);

      Common::OutSaveFile *out = g_system->getSavefileManager()->openForSaving(indexFile);
      if (!out) {
            warning("Unable to open file %s for saving", indexFile);
            return;
      }

      out->write(saveNames, 10 * 20);
      delete out;

      // Delete save file
      char saveFileName[256];
      sprintf(saveFileName, "%s.%1d", target, slot);

      g_system->getSavefileManager()->removeSavefile(saveFileName);
}

#if PLUGIN_ENABLED_DYNAMIC(CINE)
      REGISTER_PLUGIN_DYNAMIC(CINE, PLUGIN_TYPE_ENGINE, CineMetaEngine);
#else
      REGISTER_PLUGIN_STATIC(CINE, PLUGIN_TYPE_ENGINE, CineMetaEngine);
#endif

namespace Cine {

00234 Common::Error CineEngine::loadGameState(int slot) {
      char saveNameBuffer[256];
      sprintf(saveNameBuffer, "%s.%1d", _targetName.c_str(), slot);
      bool gameLoaded = makeLoad(saveNameBuffer);

      return gameLoaded ? Common::kNoError : Common::kUnknownError;
}

00242 Common::Error CineEngine::saveGameState(int slot, const char *desc) {
      // Load savegame descriptions from index file
      loadSaveDirectory();

      // Set description for selected slot making sure it ends with a trailing zero
      strncpy(currentSaveName[slot], desc, 20);
      currentSaveName[slot][sizeof(CommandeType) - 1] = 0;

      // Update savegame descriptions
      char indexFile[80];
      snprintf(indexFile, 80, "%s.dir", _targetName.c_str());

      Common::OutSaveFile *fHandle = _saveFileMan->openForSaving(indexFile);
      if (!fHandle) {
            warning("Unable to open file %s for saving", indexFile);
            return Common::kUnknownError;
      }

      fHandle->write(currentSaveName, 10 * 20);
      delete fHandle;

      // Save game
      char saveFileName[256];
      sprintf(saveFileName, "%s.%1d", _targetName.c_str(), slot);
      makeSave(saveFileName);

      checkDataDisk(-1);

      return Common::kNoError;
}

00273 bool CineEngine::canLoadGameStateCurrently() {
      return (!disableSystemMenu && !inMenu);
}

00277 bool CineEngine::canSaveGameStateCurrently() {
      return (allowPlayerInput && !disableSystemMenu && !inMenu);
}

} // End of namespace Cine

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