cgametimer.cpp

S60 3D游戏引擎开发案例 S60 3D游戏引擎开发案例

   /*
============================================================================
    * Name : CGameTimer.cpp
    * Part of : Example3D
    * Description : Definition of CGameTimer
    * Copyright (c) 2007 Nokia Corporation
============================================================================
    */

// 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();
	}