Logo Search packages:      
Sourcecode: scummvm version File versions  Download package

game.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004-2006 The ScummVM project
 *
 * The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
 *
 * 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://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/saga/game.cpp $
 * $Id: game.cpp 23752 2006-08-26 11:33:41Z kirben $
 *
 */

// Game detection, general game parameters

#include "saga/saga.h"

#include "common/file.h"
#include "common/md5.h"
#include "common/hashmap.h"
#include "common/config-manager.h"
#include "base/plugins.h"
#include "backends/fs/fs.h"

#include "saga/rscfile.h"
#include "saga/interface.h"
#include "saga/scene.h"
#include "saga/sagaresnames.h"


namespace Saga {
static DetectedGameList GAME_detectGames(const FSList &fslist);
}

static const PlainGameDescriptor saga_games[] = {
      {"ite", "Inherit the Earth: Quest for the Orb"},
      //{"ihnm", "I Have No Mouth and I Must Scream"},
      {0, 0}
};

GameList Engine_SAGA_gameIDList() {
      GameList games;
      const PlainGameDescriptor *g = saga_games;

      while (g->gameid) {
            games.push_back(*g);
            g++;
      }

      return games;
}

GameDescriptor Engine_SAGA_findGameID(const char *gameid) {
      const PlainGameDescriptor *g = saga_games;
      while (g->gameid) {
            if (0 == scumm_stricmp(gameid, g->gameid))
                  break;
            g++;
      }
      return *g;
}

DetectedGameList Engine_SAGA_detectGames(const FSList &fslist) {
      return Saga::GAME_detectGames(fslist);
}

PluginError Engine_SAGA_create(OSystem *syst, Engine **engine) {
      assert(syst);
      assert(engine);

      FSList fslist;
      FilesystemNode dir(ConfMan.get("path"));
      if (!dir.listDir(fslist, FilesystemNode::kListFilesOnly)) {
            warning("SagaEngine: invalid game path '%s'", dir.path().c_str());
            return kInvalidPathError;
      }

      // Invoke the detector
      Common::String gameid = ConfMan.get("gameid");
      DetectedGameList detectedGames = Engine_SAGA_detectGames(fslist);

      for (uint i = 0; i < detectedGames.size(); i++) {
            if (detectedGames[i].gameid == gameid) {
                  *engine = new Saga::SagaEngine(syst);
                  return kNoError;
            }
      }

      warning("SagaEngine: Unable to locate game data at path '%s'", dir.path().c_str());
      return kNoGameDataFoundError;
}

REGISTER_PLUGIN(SAGA, "SAGA Engine");

namespace Saga {
#include "sagagame.cpp"

DetectedGame toDetectedGame(const GameDescription &g) {
      const char *title;
      title = saga_games[g.gameType].description;
      DetectedGame dg(g.name, title, g.language, g.platform);
      dg.updateDesc(g.extra);
      return dg;
}

static int detectGame(const FSList *fslist, Common::Language language, Common::Platform platform, int*& returnMatches) {
      int gamesCount = ARRAYSIZE(gameDescriptions);
      int filesCount;

      typedef Common::HashMap<Common::String, bool> StringSet;
      StringSet filesList;

      typedef Common::HashMap<Common::String, Common::String> StringMap;
      StringMap filesMD5;

      Common::String tstr;
      
      int i, j;
      char md5str[32+1];
      uint8 md5sum[16];

      int matched[ARRAYSIZE(gameDescriptions)];
      int matchedCount = 0;
      bool fileMissing;
      GameFileDescription *fileDesc;

      // First we compose list of files which we need MD5s for
      for (i = 0; i < gamesCount; i++) {
            for (j = 0; j < gameDescriptions[i].filesCount; j++) {
                  tstr = Common::String(gameDescriptions[i].filesDescriptions[j].fileName);
                  tstr.toLowercase();
                  filesList[tstr] = true;
            }
      }
      
      if (fslist != NULL) {
            for (FSList::const_iterator file = fslist->begin(); file != fslist->end(); ++file) {
                  if (file->isDirectory()) continue;
                  tstr = file->displayName();
                  tstr.toLowercase();

                  if (!filesList.contains(tstr)) continue;

                  if (!Common::md5_file(file->path().c_str(), md5sum, FILE_MD5_BYTES)) continue;
                  for (j = 0; j < 16; j++) {
                        sprintf(md5str + j*2, "%02x", (int)md5sum[j]);
                  }
                  filesMD5[tstr] = Common::String(md5str);
            }
      } else {
            Common::File testFile;

            for (StringSet::const_iterator file = filesList.begin(); file != filesList.end(); ++file) {
                  tstr = file->_key;
                  tstr.toLowercase();

                  if(!filesMD5.contains(tstr)) {
                        if (testFile.open(file->_key)) {
                              testFile.close();

                              if (Common::md5_file(file->_key.c_str(), md5sum, FILE_MD5_BYTES)) {
                                    for (j = 0; j < 16; j++) {
                                          sprintf(md5str + j*2, "%02x", (int)md5sum[j]);
                                    }
                                    filesMD5[tstr] = Common::String(md5str);
                              }
                        }
                  }
            }
      }

      for (i = 0; i < gamesCount; i++) {
            filesCount = gameDescriptions[i].filesCount;          
            fileMissing = false;

            // Try to open all files for this game
            for (j = 0; j < filesCount; j++) {
                  fileDesc = &gameDescriptions[i].filesDescriptions[j];
                  tstr = fileDesc->fileName;
                  tstr.toLowercase();

                  if (!filesMD5.contains(tstr)) {

                        if ((fileDesc->fileType & (GAME_SOUNDFILE | GAME_VOICEFILE | GAME_MUSICFILE)) != 0) {
                              //TODO: find recompressed files
                        }
                        fileMissing = true;
                        break;
                  }
                  if (strcmp(fileDesc->md5, filesMD5[tstr].c_str())) {
                        fileMissing = true;
                        break;
                  }
            }
            if (!fileMissing) {
                  debug(2, "Found game: %s", toDetectedGame(gameDescriptions[i]).description.c_str());
                  matched[matchedCount++] = i;
            }
      }

      if (!filesMD5.empty() && (matchedCount == 0)) {
            printf("MD5s of your game version are unknown. Please, report following data to\n");
            printf("ScummVM team along with your game name and version:\n");

            for (StringMap::const_iterator file = filesMD5.begin(); file != filesMD5.end(); ++file)
                  printf("%s: %s\n", file->_key.c_str(), file->_value.c_str());
      }

      // We have some resource sets which are superpositions of other
      // Particularly it is ite-demo-linux vs ite-demo-win
      // Now remove lesser set if bigger matches too

      if (matchedCount > 1) {
            // Search max number
            int maxcount = 0;
            for (i = 0; i < matchedCount; i++) {
                  maxcount = MAX(gameDescriptions[matched[i]].filesCount, maxcount);
            }

            // Now purge targets with number of files lesser than max
            for (i = 0; i < matchedCount; i++) {
                  if ((gameDescriptions[matched[i]].language != language && language != Common::UNK_LANG) ||
                        (gameDescriptions[matched[i]].platform != platform && platform != Common::kPlatformUnknown)) {
                        debug(2, "Purged %s", toDetectedGame(gameDescriptions[matched[i]]).description.c_str());
                        matched[i] = -1;
                        continue;
                  }

                  if (gameDescriptions[matched[i]].filesCount < maxcount) {
                        debug(2, "Purged: %s", toDetectedGame(gameDescriptions[matched[i]]).description.c_str());
                        matched[i] = -1;
                  }
            }
      }


      returnMatches = (int *)malloc(matchedCount * sizeof(int));
      j = 0;
      for (i = 0; i < matchedCount; i++)
            if (matched[i] != -1)
                  returnMatches[j++] = matched[i];
      return j;
}

bool SagaEngine::initGame() {
      uint16 gameCount = ARRAYSIZE(gameDescriptions);
      int gameNumber = -1;
      
      DetectedGameList detectedGames;
      int count;
      int* matches;
      Common::Language language = Common::UNK_LANG;
      Common::Platform platform = Common::kPlatformUnknown;

      if (ConfMan.hasKey("language"))
            language = Common::parseLanguage(ConfMan.get("language"));
      if (ConfMan.hasKey("platform"))
            platform = Common::parsePlatform(ConfMan.get("platform"));


      count = detectGame(NULL, language, platform, matches);

      if (count == 0) {
            warning("No valid games were found in the specified directory.");
            return false;
      }

      if (count != 1)
            warning("Conflicting targets detected (%d)", count);

      gameNumber = matches[0];

      free(matches);

      if (gameNumber >= gameCount || gameNumber == -1) {
            error("SagaEngine::loadGame wrong gameNumber");
      }

      _gameTitle = toDetectedGame(gameDescriptions[gameNumber]).description;
      debug(2, "Running %s", _gameTitle.c_str());

      _gameNumber = gameNumber;
      _gameDescription = &gameDescriptions[gameNumber];
      _gameDisplayInfo = *_gameDescription->gameDisplayInfo;
      _displayClip.right = _gameDisplayInfo.logicalWidth;
      _displayClip.bottom = _gameDisplayInfo.logicalHeight;

      if (!_resource->createContexts()) {
            return false;
      }
      return true;
}

DetectedGameList GAME_detectGames(const FSList &fslist) {
      DetectedGameList detectedGames;
      int count;
      int* matches;
      count = detectGame(&fslist, Common::UNK_LANG, Common::kPlatformUnknown, matches);

      for (int i = 0; i < count; i++)
            detectedGames.push_back(toDetectedGame(gameDescriptions[matches[i]]));
      free(matches);
      return detectedGames;
}

} // End of namespace Saga

Generated by  Doxygen 1.6.0   Back to index