// $Revision: 1.10 $
//------------------------------------------------------------------------------
//
// Copyright (C) 1994 Taligent, Inc. All rights reserved.
//
// Project:			ConcurrentActors
// File:			MovementSubsystem.h
// Build/Version:	1.0.0
//
// Description:		The Movement subsystem maintains a thread that tracks 
//					movable objects and decides when to move them.
//
//------------------------------------------------------------------------------

#ifndef TaligentSamples_MOVEMENTSUBSYSTEM
#define TaligentSamples_MOVEMENTSUBSYSTEM

class MMoving;
class TMoverThread;

#ifndef Taligent_COLLECTIONS
#include <Taligent/Collections.h>
#endif
#ifndef Taligent_SYNCHRONIZATION
#include <Taligent/Synchronization.h>
#endif
#ifndef Taligent_CLOCK
#include <Taligent/Clock.h>
#endif

#ifndef TaligentSamples_LOCALUTILITIES
#include "LocalUtilities.h"
#endif

//==============================================================================
// MMoving

class MMoving {
public:
							MMoving();
	virtual					~MMoving();

	virtual void			PreMove(const TTime& interval);
	virtual void			Move(const TTime& interval) = 0;
	virtual void			PostMove(const TTime& interval);
};

//==============================================================================
// TMoverThread

class TMoverThread : public TPeriodicThread {
public:
	static const TTime&		kDefaultMoveInterval;
	
							TMoverThread(const TTime& moveInterval = kDefaultMoveInterval);
	virtual					~TMoverThread();
	
	virtual void			Add(MMoving* object);
	virtual MMoving*		Remove(MMoving& object);
	virtual void			RemoveAll();
	
protected:
	virtual void			HandleIntervalPassed(const TTime& interval);
	virtual void			GetDelayInterval(TTime& interval) const;

private:
	TSeconds				fInterval;
	TDequeOf<MMoving>		fObjects;
};

#endif