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https://github.com/ZDoom/raze-gles.git
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83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
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/*
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** savegame.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2019 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OFf
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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** This is for keeping my sanity while working with the horrible mess
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** that is the savegame code in Duke Nukem.
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** Without handling this in global variables it is a losing proposition
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** to save custom data along with the regular snapshot. :(
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** With this the savegame code can mostly pretend to load from and write
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** to files while really using a composite archive.
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*/
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#include "compositesaveame.h"
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#include "savegamehelp.h"
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static CompositeSavegameWriter savewriter;
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static FResourceFile *savereader;
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void OpenSaveGameForWrite(const char *name)
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{
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savewriter.Clear();
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savewriter.SetFileName(name);
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}
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bool OpenSaveGameForRead(const char *name)
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{
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if (savereader) delete savereader;
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savereader = FResourceFile::OpenResourceFile(name, true, true);
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return savereader != nullptr;
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}
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FileWriter *WriteSavegameChunk(const char *name)
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{
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return &savewriter.NewElement(name);
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}
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FileReader ReadSavegameChunk(const char *name)
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{
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if (!savereader) return FileReader();
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auto lump = savereader->FindLump(name);
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if (!lump) return FileReader();
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return lump->NewReader();
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}
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bool FinishSavegameWrite()
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{
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return savewriter.WriteToFile();
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}
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void FinishSavegameRead()
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{
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delete savereader;
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savereader = nullptr;
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}
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