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00e59a3122
This commit introduces the following changes: 1. Graphics::loadThumbnail() Now returns a boolean and takes a new argument skipThumbnail which defaults to false. In case of true, loadThumbnail() reads past the thumbnail data in the input stream instead of actually loading the thumbnail. This simplifies savegame handling where, up until now, many engines always read the whole savegame metadata (including the thumbnail) and then threw away the thumbnail when not needed (which is in almost all cases, the most common exception being MetaEngine::querySaveMetaInfos() which is responsible for loading savegame metadata for displaying it in the GUI launcher. 2. readSavegameHeader() Engines which already implement such a method (name varies) now take a new argument skipThumbnail (default: true) which is passed through to loadThumbnail(). This means that the default case for readSavegameHeader() is now _not_ loading the thumbnail from a savegame and just reading past it. In those cases, e.g. querySaveMetaInfos(), where we actually are interested in loading the thumbnail readSavegameHeader() needs to explicitely be called with skipThumbnail == false. Engines whose readSavegameHeader() (name varies) already takes an argument loadThumbnail have been adapted to have a similar prototype and semantics. I.e. readSaveHeader(in, loadThumbnail, header) now is readSaveHeader(in, header, skipThumbnail). 3. Error handling Engines which previously did not check the return value of readSavegameHeader() (name varies) now do so ensuring that possibly broken savegames (be it a broken thumbnail or something else) don't make it into the GUI launcher list in the first place.
75 lines
2.3 KiB
C++
75 lines
2.3 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on original Mortville Manor DOS source code
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* Copyright (c) 1987-1989 Lankhor
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*/
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#ifndef MORTEVIELLE_SAVELOAD_H
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#define MORTEVIELLE_SAVELOAD_H
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#include "common/savefile.h"
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#include "common/serializer.h"
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#include "graphics/palette.h"
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#include "graphics/scaler.h"
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#include "graphics/thumbnail.h"
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#define SAVEGAME_VERSION 1
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namespace Mortevielle {
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struct SavegameHeader {
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uint8 version;
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Common::String saveName;
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Graphics::Surface *thumbnail;
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int saveYear, saveMonth, saveDay;
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int saveHour, saveMinutes;
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int totalFrames;
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};
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class MortevielleEngine;
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class SavegameManager {
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private:
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MortevielleEngine *_vm;
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byte _tabdonSaveBuffer[391];
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void sync_save(Common::Serializer &sz);
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public:
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SavegameManager(MortevielleEngine *vm);
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bool loadSavegame(const Common::String &filename);
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Common::Error loadGame(const Common::String &filename);
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Common::Error saveGame(int n, const Common::String &saveName);
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Common::Error loadGame(int slot);
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Common::Error saveGame(int slot);
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void writeSavegameHeader(Common::OutSaveFile *out, const Common::String &saveName);
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WARN_UNUSED_RESULT static bool readSavegameHeader(Common::InSaveFile *in, SavegameHeader &header, bool skipThumbnail = true);
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static SaveStateList listSaves(const Common::String &target);
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static SaveStateDescriptor querySaveMetaInfos(const Common::String &fileName);
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};
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} // End of namespace Mortevielle
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#endif
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