100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef TITANIC_DIALOGUE_FILE_H
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#define TITANIC_DIALOGUE_FILE_H
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#include "titanic/support/simple_file.h"
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#include "titanic/support/string.h"
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namespace Titanic {
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struct DialogueIndexEntry {
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uint _v1, _offset;
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DialogueIndexEntry() : _v1(0), _offset(0) {}
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void load(Common::SeekableReadStream &s);
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};
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struct DialogueResource {
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bool _active;
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uint _offset, _bytesRead, _size;
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DialogueIndexEntry *_entryPtr;
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DialogueResource() : _active(false), _offset(0),
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_bytesRead(0), _size(0), _entryPtr(nullptr) {}
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/**
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* Return the size of a cache entry
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*/
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size_t size() const { return _active ? _size : 0; }
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};
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class CDialogueFile {
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private:
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File _file;
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Common::Array<DialogueIndexEntry> _index;
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Common::Array<DialogueResource> _cache;
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private:
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/**
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* Add a dialogue file entry to the active cache
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*/
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DialogueResource *addToCache(int index);
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public:
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CDialogueFile(const CString &filename, uint count);
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~CDialogueFile();
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/**
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* Clear the loaded data
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*/
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void clear();
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File *getFile() { return &_file; }
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/**
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* Sets up a text entry within the dialogue file for access
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*/
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DialogueResource *openTextEntry(int index) {
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return addToCache(index * 2);
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}
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/**
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* Sets up a wave (sound) entry within the dialogue file for access
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*/
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DialogueResource *openWaveEntry(int index) {
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return addToCache(index * 2 + 1);
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}
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/**
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* Removes an entry from the cache
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*/
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bool closeEntry(DialogueResource *cacheEntry);
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/**
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* Read data for a resource
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*/
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bool read(DialogueResource *cacheEntry, byte *buffer, size_t bytesToRead);
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};
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} // End of namespace Titanic
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#endif /* TITANIC_TITLE_ENGINE_H */
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