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/* 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.
*
*/
#ifndef TITANIC_DIALOGUE_FILE_H
#define TITANIC_DIALOGUE_FILE_H
#include "titanic/support/simple_file.h"
#include "titanic/support/string.h"
namespace Titanic {
struct DialogueIndexEntry {
uint _v1, _offset;
DialogueIndexEntry() : _v1(0), _offset(0) {}
void load(Common::SeekableReadStream &s);
};
struct DialogueResource {
bool _active;
uint _offset, _bytesRead, _size;
DialogueIndexEntry *_entryPtr;
DialogueResource() : _active(false), _offset(0),
_bytesRead(0), _size(0), _entryPtr(nullptr) {}
/**
* Return the size of a cache entry
*/
size_t size() const { return _active ? _size : 0; }
};
class CDialogueFile {
private:
File _file;
Common::Array<DialogueIndexEntry> _index;
Common::Array<DialogueResource> _cache;
private:
/**
* Add a dialogue file entry to the active cache
*/
DialogueResource *addToCache(int index);
public:
CDialogueFile(const CString &filename, uint count);
~CDialogueFile();
/**
* Clear the loaded data
*/
void clear();
File *getFile() { return &_file; }
/**
* Sets up a text entry within the dialogue file for access
*/
DialogueResource *openTextEntry(int index) {
return addToCache(index * 2);
}
/**
* Sets up a wave (sound) entry within the dialogue file for access
*/
DialogueResource *openWaveEntry(int index) {
return addToCache(index * 2 + 1);
}
/**
* Removes an entry from the cache
*/
bool closeEntry(DialogueResource *cacheEntry);
/**
* Read data for a resource
*/
bool read(DialogueResource *cacheEntry, byte *buffer, size_t bytesToRead);
};
} // End of namespace Titanic
#endif /* TITANIC_TITLE_ENGINE_H */
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