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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.
*
*/
#ifndef ENGINES_SAVESTATE_H
#define ENGINES_SAVESTATE_H
#include "common/array.h"
#include "common/hash-str.h"
#include "common/ptr.h"
namespace Graphics {
struct Surface;
}
/**
* A hashmap describing details about a given save state.
* TODO
* Guaranteed to contain save_slot and description values.
* Additional ideas: Playtime, creation date, thumbnail, ...
*/
class SaveStateDescriptor : public Common::StringMap {
protected:
Common::SharedPtr<Graphics::Surface> _thumbnail; // can be 0
public:
SaveStateDescriptor() : _thumbnail() {
setVal("save_slot", "-1"); // FIXME: default to 0 (first slot) or to -1 (invalid slot) ?
setVal("description", "");
}
SaveStateDescriptor(int s, const Common::String &d) : _thumbnail() {
char buf[16];
sprintf(buf, "%d", s);
setVal("save_slot", buf);
setVal("description", d);
}
SaveStateDescriptor(const Common::String &s, const Common::String &d) : _thumbnail() {
setVal("save_slot", s);
setVal("description", d);
}
/** The saveslot id, as it would be passed to the "-x" command line switch. */
Common::String &save_slot() { return getVal("save_slot"); }
/** The saveslot id, as it would be passed to the "-x" command line switch (read-only variant). */
const Common::String &save_slot() const { return getVal("save_slot"); }
/** A human readable description of the save state. */
Common::String &description() { return getVal("description"); }
/** A human readable description of the save state (read-only variant). */
const Common::String &description() const { return getVal("description"); }
/** Optional entries only included when querying via MetaEngine::querySaveMetaInfo */
/**
* Returns the value of a given key as boolean.
* It accepts 'true', 'yes' and '1' for true and
* 'false', 'no' and '0' for false.
* (FIXME:) On unknown value it errors out ScummVM.
* On unknown key it returns false as default.
*/
bool getBool(const Common::String &key) const;
/**
* Sets the 'is_deletable' key, which indicates if the
* given savestate is safe for deletion.
*/
void setDeletableFlag(bool state);
/**
* Sets the 'is_write_protected' key, which indicates if the
* given savestate can be overwritten or not
*/
void setWriteProtectedFlag(bool state);
/**
* Return a thumbnail graphics surface representing the savestate visually.
* This is usually a scaled down version of the game graphics. The size
* should be either 160x100 or 160x120 pixels, depending on the aspect
* ratio of the game. If another ratio is required, contact the core team.
*/
const Graphics::Surface *getThumbnail() const { return _thumbnail.get(); }
/**
* Set a thumbnail graphics surface representing the savestate visually.
* Ownership of the surface is transferred to the SaveStateDescriptor.
* Hence the caller must not delete the surface.
*/
void setThumbnail(Graphics::Surface *t);
/**
* Sets the 'save_date' key properly, based on the given values.
*/
void setSaveDate(int year, int month, int day);
/**
* Sets the 'save_time' key properly, based on the given values.
*/
void setSaveTime(int hour, int min);
/**
* Sets the 'play_time' key properly, based on the given values.
*/
void setPlayTime(int hours, int minutes);
/**
* Sets the 'play_time' key properly, based on the given value.
*/
void setPlayTime(uint32 msecs);
};
/** List of savestates. */
typedef Common::Array<SaveStateDescriptor> SaveStateList;
#endif
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