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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia 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.
//
// Nestopia 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 Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#ifndef NST_API_REWINDER_H
#define NST_API_REWINDER_H
#include "NstApi.hpp"
#ifdef NST_PRAGMA_ONCE
#pragma once
#endif
#if NST_ICC >= 810
#pragma warning( push )
#pragma warning( disable : 304 444 )
#elif NST_MSVC >= 1200
#pragma warning( push )
#pragma warning( disable : 4512 )
#endif
namespace Nes
{
namespace Api
{
/**
* Game rewinder interface.
*/
class Rewinder : public Base
{
struct StateCaller;
public:
/**
* Interface constructor.
*
* @param instance emulator instance
*/
template<typename T>
Rewinder(T& instance)
: Base(instance) {}
/**
* Direction.
*/
enum Direction
{
/**
* Forward.
*/
FORWARD,
/**
* Backward.
*/
BACKWARD
};
/**
* Enables rewinder.
*
* @param state true to enable
* @return result code
*/
Result Enable(bool state=true) throw();
/**
* Checks if rewinder is enabled.
*
* @return true if enabled
*/
bool IsEnabled() const throw();
/**
* Resets rewinder.
*/
void Reset() throw();
/**
* Enables backward sound.
*
* @param state true to enable
*/
void EnableSound(bool state=true) throw();
/**
* Checks if backward sound is enabled.
*
* @return true if enabled
*/
bool IsSoundEnabled() const throw();
/**
* Sets direction.
*
* @param direction direction, FORWARD or BACKWARD
* @return result code
*/
Result SetDirection(Direction direction) throw();
/**
* Returns the current direction.
*
* @return current direction
*/
Direction GetDirection() const throw();
/**
* Rewinder state.
*/
enum State
{
/**
* Rewinding has stopped.
*/
STOPPED,
/**
* Rewinding will soon start.
*/
PREPARING,
/**
* Rewinding has begun.
*/
REWINDING
};
enum
{
NUM_STATE_CALLBACKS = 3
};
/**
* Rewinder state callback prototype.
*
* @param userData optional user data
* @param state type of state
*/
typedef void (NST_CALLBACK *StateCallback) (UserData userData,State state);
/**
* Rewinder state callback manager.
*
* Static object used for adding the user defined callback.
*/
static StateCaller stateCallback;
};
/**
* Rewinder state callback invoker.
*
* Used internally by the core.
*/
struct Rewinder::StateCaller : Core::UserCallback<Rewinder::StateCallback>
{
void operator () (State state) const
{
if (function)
function( userdata, state );
}
};
}
}
#if NST_MSVC >= 1200 || NST_ICC >= 810
#pragma warning( pop )
#endif
#endif
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