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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.
*
* $URL: https://scummvm-misc.svn.sourceforge.net/svnroot/scummvm-misc/trunk/engines/tsage/saveload.h $
* $Id: saveload.h 209 2011-02-06 00:46:36Z dreammaster $
*
*/
#ifndef TSAGE_SAVELOAD_H
#define TSAGE_SAVELOAD_H
#include "common/scummsys.h"
#include "common/list.h"
#include "common/memstream.h"
#include "common/savefile.h"
#include "common/serializer.h"
namespace tSage {
typedef void (*SaveNotifierFn)(bool postFlag);
#define TSAGE_SAVEGAME_VERSION 1
class SavedObject;
struct tSageSavegameHeader {
uint8 version;
Common::String saveName;
Graphics::Surface *thumbnail;
int saveYear, saveMonth, saveDay;
int saveHour, saveMinutes;
int totalFrames;
};
/*--------------------------------------------------------------------------*/
#define SYNC_POINTER(x) s.syncPointer((SavedObject **)&x)
#define SYNC_ENUM(FIELD, TYPE) int v_##FIELD## = (int)FIELD; s.syncAsUint16LE(v_##FIELD##); \
if (s.isLoading()) FIELD = (TYPE)v_##FIELD##;
/**
* Derived serialiser class with extra synchronisation types
*/
class Serialiser: public Common::Serializer {
public:
Serialiser(Common::SeekableReadStream *in, Common::WriteStream *out): Common::Serializer(in, out) {}
void syncPointer(SavedObject **ptr, Common::Serializer::Version minVersion = 0,
Common::Serializer::Version maxVersion = kLastVersion);
void validate(const Common::String &s, Common::Serializer::Version minVersion = 0,
Common::Serializer::Version maxVersion = kLastVersion);
void validate(int v, Common::Serializer::Version minVersion = 0,
Common::Serializer::Version maxVersion = kLastVersion);
};
/*--------------------------------------------------------------------------*/
class Serialisable {
public:
virtual ~Serialisable() {}
virtual void synchronise(Serialiser &s) = 0;
};
class SaveListener {
public:
virtual ~SaveListener() {}
virtual void listenerSynchronise(Serialiser &s) = 0;
};
/*--------------------------------------------------------------------------*/
class SavedObject: public Serialisable {
public:
SavedObject();
virtual ~SavedObject();
virtual Common::String getClassName() { return "SavedObject"; }
virtual void synchronise(Serialiser &s) {}
static SavedObject *createInstance(const Common::String &className);
};
/*--------------------------------------------------------------------------*/
/**
* Derived list class with extra functionality
*/
template<typename T>
class List: public Common::List<T> {
public:
bool contains(T v) {
for (typename List<T>::iterator i = this->begin(); i != this->end(); ++i)
if (*i == v)
return true;
return false;
}
typedef void (*ForEachFn)(T fn);
void forEach(ForEachFn Fn) {
for (typename List<T>::iterator i = this->begin(); i != this->end(); ++i)
Fn(*i);
}
void synchronise(Serialiser &s) {
int entryCount;
if (s.isLoading()) {
List<T>::clear();
s.syncAsUint32LE(entryCount);
for (int idx = 0; idx < entryCount; ++idx) {
List<T>::push_back(static_cast<T>((T)NULL));
T &obj = List<T>::back();
s.syncPointer((SavedObject **)&obj);
}
} else {
// Get the list size
entryCount = 0;
typename List<T>::iterator i;
for (i = List<T>::begin(); i != List<T>::end(); ++i, ++entryCount)
;
// Write out list
s.syncAsUint32LE(entryCount);
for (i = List<T>::begin(); i != List<T>::end(); ++i) {
s.syncPointer((SavedObject **)&*i);
}
}
}
};
/**
* Derived list class for holding function pointers
*/
template<typename T>
class FunctionList: public List<void (*)(T)> {
public:
void notify(T v) {
for (typename List<void (*)(T)>::iterator i = this->begin(); i != this->end(); ++i) {
(*i)(v);
}
}
};
/*--------------------------------------------------------------------------*/
class SavedObjectRef {
public:
SavedObject **_savedObject;
int _objIndex;
SavedObjectRef(): _savedObject(NULL), _objIndex(-1) {}
SavedObjectRef(SavedObject **so, int objIndex): _savedObject(so), _objIndex(objIndex) {}
};
typedef SavedObject *(*SavedObjectFactory)(const Common::String &className);
class Saver {
private:
List<SavedObject *> _objList;
FunctionList<bool> _saveNotifiers;
FunctionList<bool> _loadNotifiers;
List<SaveListener *> _listeners;
Common::List<SavedObjectRef> _unresolvedPtrs;
SavedObjectFactory _factoryPtr;
bool _macroSaveFlag;
bool _macroRestoreFlag;
int _saveSlot;
void resolveLoadPointers();
public:
Saver();
~Saver();
Common::Error save(int slot, const Common::String &saveName);
Common::Error restore(int slot);
static bool readSavegameHeader(Common::InSaveFile *in, tSageSavegameHeader &header);
static void writeSavegameHeader(Common::OutSaveFile *out, tSageSavegameHeader &header);
void addListener(SaveListener *obj);
void addSaveNotifier(SaveNotifierFn fn);
void addLoadNotifier(SaveNotifierFn fn);
void addObject(SavedObject *obj);
void removeObject(SavedObject *obj);
void addFactory(SavedObjectFactory fn) { _factoryPtr = fn; }
void addSavedObjectPtr(SavedObject **ptr, int objIndex) {
_unresolvedPtrs.push_back(SavedObjectRef(ptr, objIndex));
}
bool savegamesExist() const;
bool getMacroSaveFlag() const { return _macroSaveFlag; }
bool getMacroRestoreFlag() const { return _macroRestoreFlag; }
int blockIndexOf(SavedObject *p);
};
extern Saver *_saver;
} // End of namespace tSage
#endif
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