cgametimer.cpp

symbian 60 3d 的一个很经典的例子

    /*
    *
============================================================================
    *  Name     : CGameTimer.cpp
    *  Part of  : Example3D
    *  Created  : 12/14/2003 by Forum Nokia
    *  Description:
    *     This is the project specification file for Example3D.
    *     Initial content was generated by Series 60 AppWizard.
    *
    *  Version  : 1.0.0
    *  Copyright: Forum Nokia
    *
============================================================================
    */

// INCLUDES
#include "CGameTimer.h"
#include <e32svr.h>
#include <coemain.h>
#include "MGameTimerObserver.h"
			
// MEMBER FUNCTIONS

CGameTimer* CGameTimer::NewLC(MGameTimerObserver& aObserver)
	{
	CGameTimer* self = new (ELeave) CGameTimer( aObserver );
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
	}

CGameTimer* CGameTimer::NewL(MGameTimerObserver& aObserver)
	{
	CGameTimer* self = CGameTimer::NewLC( aObserver );
	CleanupStack::Pop();
	return self;
	}

CGameTimer::CGameTimer( MGameTimerObserver& aObserver )
	: iObserver( aObserver )
	{
	}

void CGameTimer::ConstructL()
	{
	iIdle = CIdle::NewL( CIdle::EPriorityIdle );
	}



CGameTimer::~CGameTimer()
	{
	iIdle->Cancel();
	delete iIdle;
	}



void CGameTimer::Start()
	{
	iIdle->Start( TCallBack( IdleCallBack, this ) );
	}

void CGameTimer::Cancel()
	{
	iIdle->Cancel();
	}


TInt CGameTimer::IdleCallBack( TAny* aPtr )
	{
	return ( ( CGameTimer* )aPtr )->DoCall();
	}

TInt CGameTimer::DoCall()
	{
	return iObserver.DoGameFrameL();
	}