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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.
*
*/
#include "glk/alan3/save.h"
#include "glk/alan3/acode.h"
#include "glk/alan3/current.h"
#include "glk/alan3/event.h"
#include "glk/alan3/instance.h"
#include "glk/alan3/lists.h"
#include "glk/alan3/memory.h"
#include "glk/alan3/msg.h"
#include "glk/alan3/options.h"
#include "glk/alan3/score.h"
#include "glk/alan3/types.h"
namespace Glk {
namespace Alan3 {
static void saveGameInfo(Common::WriteStream *saveFile) {
saveFile->writeUint32BE(MKTAG('A', 'S', 'A', 'V'));
saveFile->write(header->version, 4);
saveFile->writeUint32LE(header->uid);
}
static void verifySaveFile(CONTEXT, Common::SeekableReadStream *saveFile) {
if (saveFile->readUint32BE() != MKTAG('A', 'S', 'A', 'V'))
error(context, M_NOTASAVEFILE);
}
static void verifyCompilerVersion(CONTEXT, Common::SeekableReadStream *saveFile) {
char savedVersion[4];
saveFile->read(&savedVersion, 4);
if (!ignoreErrorOption && memcmp(savedVersion, header->version, 4))
error(context, M_SAVEVERS);
}
static void verifyGameId(CONTEXT, Common::SeekableReadStream *saveFile) {
Aword savedUid = saveFile->readUint32LE();
if (!ignoreErrorOption && savedUid != header->uid)
error(context, M_SAVEVERS);
}
void syncGame(Common::Serializer &s) {
// Current values
current.synchronize(s);
// Attributes area
for (Aint i = 0; i < header->attributesAreaSize / 3; ++i)
attributes[i].synchronize(s);
// Admin data
for (uint i = 1; i <= header->instanceMax; i++)
admin[i].synchronize(s);
// Event queue
s.syncAsSint32LE(eventQueueTop);
for (int i = 0; i < eventQueueTop; ++i)
eventQueue[i].synchronize(s);
// Scores
for (Aint i = 0; i < header->scoreCount; ++i)
s.syncAsUint32LE(scores[i]);
// Strings
if (header->stringInitTable != 0)
for (StringInitEntry *initEntry = (StringInitEntry *)pointerTo(header->stringInitTable);
!isEndOfArray(initEntry); initEntry++) {
if (s.isSaving()) {
char *attr = (char *)getInstanceStringAttribute(initEntry->instanceCode, initEntry->attributeCode);
Aint length = strlen(attr) + 1;
s.syncAsUint32LE(length);
s.syncBytes((byte *)attr, length);
} else {
Aint length = 0;
s.syncAsUint32LE(length);
char *string = (char *)allocate(length + 1);
s.syncBytes((byte *)string, length);
setInstanceAttribute(initEntry->instanceCode, initEntry->attributeCode, toAptr(string));
}
}
// Sets
if (header->setInitTable != 0) {
for (SetInitEntry *initEntry = (SetInitEntry *)pointerTo(header->setInitTable);
!isEndOfArray(initEntry); initEntry++) {
if (s.isSaving()) {
Set *attr = (Set *)getInstanceSetAttribute(initEntry->instanceCode, initEntry->attributeCode);
s.syncAsUint32LE(attr->size);
for (int i = 0; i < attr->size; ++i)
s.syncAsUint32LE(attr->members[i]);
} else {
Aword setSize = 0, member = 0;
s.syncAsUint32BE(setSize);
Set *set = newSet(setSize);
for (uint i = 0; i < setSize; ++i) {
s.syncAsUint32LE(member);
addToSet(set, member);
}
setInstanceAttribute(initEntry->instanceCode, initEntry->attributeCode, toAptr(set));
}
}
}
}
void saveGame(Common::WriteStream *saveFile) {
// Save tag, version of interpreter, and unique id of game
saveGameInfo(saveFile);
// Save game data
Common::Serializer s(nullptr, saveFile);
syncGame(s);
}
bool restoreGame(Common::SeekableReadStream *saveFile) {
Context ctx;
verifySaveFile(ctx, saveFile);
if (ctx._break) return false;
// Verify version of compiler/interpreter of saved game with us
verifyCompilerVersion(ctx, saveFile);
if (ctx._break) return false;
// Verify unique id of game
verifyGameId(ctx, saveFile);
if (ctx._break) return false;
// Restore game data
Common::Serializer s(saveFile, nullptr);
syncGame(s);
return true;
}
} // End of namespace Alan3
} // End of namespace Glk
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