Bouncing Balls in OSG

#include "StdAfx.h"
#include "Change.h"
#include "Simulator.h"

CChange::CChange()
{
	enabled = false;
}

CChange::~CChange(void)
{
}

double CChange::Time() const
{
	return t;
}

int CChange::Index() const
{
	return index;
}

void CChange::Expire()
{
}

void CChange::ChangeTime(double t)
{
    Simulator()->ChangeTime(this, t);
}

bool CChange::IsEnabled() const
{
	return enabled;
}

void CChange::Enable(bool enable)
{
	Simulator()->Enable( this, enable );
}

bool CChange::operator <(const CChange &change) const
{
	if( enabled )
		if( change.enabled )
			return Time() < change.Time();
		else
			return true;
	else
		return false;
}