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cine.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-1-1-0/engines/cine/cine.cpp $
 * $Id: cine.cpp 47279 2010-01-12 21:07:56Z lordhoto $
 *
 */

#include "common/events.h"
#include "common/EventRecorder.h"
#include "common/file.h"
#include "common/savefile.h"
#include "common/config-manager.h"
#include "common/system.h"

#include "graphics/cursorman.h"

#include "sound/mididrv.h"
#include "sound/mixer.h"

#include "cine/cine.h"
#include "cine/bg_list.h"
#include "cine/main_loop.h"
#include "cine/object.h"
#include "cine/texte.h"
#include "cine/sound.h"
#include "cine/various.h"

namespace Cine {

Sound *g_sound;
Common::SaveFileManager *g_saveFileMan;

CineEngine *g_cine;

CineEngine::CineEngine(OSystem *syst, const CINEGameDescription *gameDesc) : Engine(syst), _gameDescription(gameDesc) {
      Common::addDebugChannel(kCineDebugScript, "Script", "Script debug level");
      Common::addDebugChannel(kCineDebugPart,   "Part",   "Part debug level");
      Common::addDebugChannel(kCineDebugSound,  "Sound",  "Sound debug level");

      // Setup mixer
      _mixer->setVolumeForSoundType(Audio::Mixer::kSFXSoundType, ConfMan.getInt("sfx_volume"));
      _mixer->setVolumeForSoundType(Audio::Mixer::kMusicSoundType, ConfMan.getInt("music_volume"));
      // Use music volume for plain sound types (At least the AdLib player uses a plain sound type
      // so previously the music and sfx volume controls didn't affect it at all).
      // FIXME: Make AdLib player differentiate between playing sound effects and music and remove this.
      _mixer->setVolumeForSoundType(Audio::Mixer::kPlainSoundType, ConfMan.getInt("music_volume"));

      g_cine = this;

      g_eventRec.registerRandomSource(_rnd, "cine");
}

CineEngine::~CineEngine() {
      if (g_cine->getGameType() == Cine::GType_OS) {
            freeErrmessDat();
      }
      Common::clearAllDebugChannels();
}

Common::Error CineEngine::run() {
      // Initialize backend
      initGraphics(320, 200, false);

      if (g_cine->getPlatform() == Common::kPlatformPC) {
            g_sound = new PCSound(_mixer, this);
      } else {
            // Paula chipset for Amiga and Atari versions
            g_sound = new PaulaSound(_mixer, this);
      }
      g_saveFileMan = _saveFileMan;

      initialize();

      CursorMan.showMouse(true);
      mainLoop(1);

      delete renderer;
      delete[] collisionPage;
      delete g_sound;

      return Common::kNoError;
}

int CineEngine::getTimerDelay() const {
      return (10923000 * _timerDelayMultiplier) / 1193180;
}

/*! \brief Modify game speed
 * \param speedChange Negative values slow game down, positive values speed it up, zero does nothing
 * \return Timer delay multiplier's value after the game speed change
 */
int CineEngine::modifyGameSpeed(int speedChange) {
      // If we want more speed we decrement the timer delay multiplier and vice versa.
      _timerDelayMultiplier = CLIP(_timerDelayMultiplier - speedChange, 1, 50);
      return _timerDelayMultiplier;
}

void CineEngine::initialize() {
      // Initialize all savegames' descriptions to empty strings
      memset(currentSaveName, 0, sizeof(currentSaveName));

      // Resize object table to its correct size and reset all its elements
      objectTable.resize(NUM_MAX_OBJECT);
      resetObjectTable();

      // Resize animation data table to its correct size and reset all its elements
      animDataTable.resize(NUM_MAX_ANIMDATA);
      freeAnimDataTable();

      // Resize zone data table to its correct size and reset all its elements
      zoneData.resize(NUM_MAX_ZONE);
      Common::set_to(zoneData.begin(), zoneData.end(), 0);

      // Resize zone query table to its correct size and reset all its elements
      zoneQuery.resize(NUM_MAX_ZONE);
      Common::set_to(zoneQuery.begin(), zoneQuery.end(), 0);

      _timerDelayMultiplier = 12; // Set default speed
      setupOpcodes();

      initLanguage(g_cine->getLanguage());

      if (g_cine->getGameType() == Cine::GType_OS) {
            renderer = new OSRenderer;
      } else {
            renderer = new FWRenderer;
      }

      renderer->initialize();

      collisionPage = new byte[320 * 200];

      // Clear part buffer as there's nothing loaded into it yet.
      // Its size will change when loading data into it with the loadPart function.
      partBuffer.clear();

      if (g_cine->getGameType() == Cine::GType_OS) {
            readVolCnf();
      }

      loadTextData("texte.dat");

      if (g_cine->getGameType() == Cine::GType_OS && !(g_cine->getFeatures() & GF_DEMO)) {
            loadPoldatDat("poldat.dat");
            loadErrmessDat("errmess.dat");
      }

      // in case ScummVM engines can be restarted in the future
      scriptTable.clear();
      relTable.clear();
      objectScripts.clear();
      globalScripts.clear();
      bgIncrustList.clear();
      freeAnimDataTable();
      overlayList.clear();
      messageTable.clear();
      resetObjectTable();

      var8 = 0;

      var2 = var3 = var4 = var5 = 0;

      musicIsPlaying = 0;
      currentDatName[0] = 0;

      _preLoad = false;
      if (ConfMan.hasKey("save_slot")) {
            char saveNameBuffer[256];

            sprintf(saveNameBuffer, "%s.%1d", _targetName.c_str(), ConfMan.getInt("save_slot"));

            bool res = makeLoad(saveNameBuffer);

            if (res)
                  _preLoad = true;
      }

      if (!_preLoad) {
            loadPrc(BOOT_PRC_NAME);
            strcpy(currentPrcName, BOOT_PRC_NAME);
            setMouseCursor(MOUSE_CURSOR_NORMAL);
      }
}

} // End of namespace Cine

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