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rscfile.h

/* 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-0-11-1/engines/saga/rscfile.h $
 * $Id: rscfile.h 30944 2008-02-23 22:50:18Z sev $
 *
 */

// RSC Resource file management header file

#ifndef SAGA_RSCFILE_H
#define SAGA_RSCFILE_H

#include "common/file.h"

namespace Saga {

#define MAC_BINARY_HEADER_SIZE 128
#define RSC_TABLEINFO_SIZE 8
#define RSC_TABLEENTRY_SIZE 8

#define RSC_MIN_FILESIZE (RSC_TABLEINFO_SIZE + RSC_TABLEENTRY_SIZE + 1)

struct PatchData {
      bool _deletePatchFile;
      Common::File *_patchFile;
      const GamePatchDescription *_patchDescription;

      PatchData(const GamePatchDescription *patchDescription): _patchDescription(patchDescription), _deletePatchFile(true) {
            _patchFile = new Common::File();
      }
      PatchData(Common::File *patchFile): _patchDescription(NULL), _patchFile(patchFile), _deletePatchFile(false) {
      }

      ~PatchData() {
            if (_deletePatchFile) {
                  delete _patchFile;
            }
      }
};

struct ResourceData {
      size_t offset;
      size_t size;
      PatchData *patchData;
      void fillSoundPatch(const GameSoundInfo *&soundInfo) {
            if (patchData != NULL) {
                  if (patchData->_patchDescription != NULL) {
                        if (patchData->_patchDescription->soundInfo != NULL) {
                              soundInfo = patchData->_patchDescription->soundInfo;
                        }
                  }
            }
      }
};

struct ResourceContext {
      const char *fileName;
      uint16 fileType;
      Common::File *file;
      int serial;

      bool isBigEndian;
      ResourceData *table;
      size_t count;

      Common::File *getFile(ResourceData *resourceData) const {
            if (resourceData->patchData != NULL) {
                  if (!resourceData->patchData->_patchFile->isOpen())
                        resourceData->patchData->_patchFile->open(resourceData->patchData->_patchDescription->fileName);
                  return resourceData->patchData->_patchFile;
            } else {
                  return file;
            }
      }
};

struct MetaResource {
      int16 sceneIndex;
      int16 objectCount;
      int32 objectsStringsResourceID;
      int32 inventorySpritesID;
      int32 mainSpritesID;
      int32 objectsResourceID;
      int16 actorCount;
      int32 actorsStringsResourceID;
      int32 actorsResourceID;
      int32 protagFaceSpritesID;
      int32 field_22;
      int16 field_26;
      int16 protagStatesCount;
      int32 protagStatesResourceID;
      int32 cutawayListResourceID;
      int32 songTableID;

      MetaResource() {
            memset(this, 0, sizeof(*this));
      }
};

class Resource {
public:
      Resource(SagaEngine *vm);
      ~Resource();
      bool createContexts();
      void clearContexts();
      void loadResource(ResourceContext *context, uint32 resourceId, byte*&resourceBuffer, size_t &resourceSize);
      size_t getResourceSize(ResourceContext *context, uint32 resourceId);
      uint32 convertResourceId(uint32 resourceId);

      void loadGlobalResources(int chapter, int actorsEntrance);

      ResourceContext *getContext(uint16 fileType, int serial = 0) {
            int i;
            for (i = 0; i < _contextsCount; i++) {
                  if ((_contexts[i].fileType & fileType) && _contexts[i].serial == serial) {
                        return &_contexts[i];
                  }
            }
            return NULL;
      }

      bool validResourceId(ResourceContext *context, uint32 resourceId) const {
            return (resourceId < context->count);
      }

      size_t getResourceSize(ResourceContext *context, uint32 resourceId) const {
            return getResourceData(context, resourceId)->size;
      }

      size_t getResourceOffset(ResourceContext *context, uint32 resourceId) const {
            return getResourceData(context, resourceId)->offset;
      }

      ResourceData *getResourceData(ResourceContext *context, uint32 resourceId) const {
            if (!validResourceId(context, resourceId)) {
                  warning("Resource::getResourceData() wrong resourceId %d", resourceId);
                  assert(0);
            }
            return &context->table[resourceId];
      }

private:
      SagaEngine *_vm;
      ResourceContext *_contexts;
      int _contextsCount;
      char _voicesFileName[8][256];

      bool loadContext(ResourceContext *context);
      bool loadMacContext(ResourceContext *context);
      bool loadSagaContext(ResourceContext *context, uint32 contextOffset, uint32 contextSize); 

public:
      MetaResource _metaResource;
};

} // End of namespace Saga

#endif

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