class myLight
{
public:
	D3DLIGHT8*			Light;
        bool				Alive;
};

//----------------------------------------------------------------

// Class that encapsulates the lights

//----------------------------------------------------------------

class myLightSystem
{
public:
	myLightSystem();
	~myLightSystem();

	//----------------------------------------------------------------

	// The lights that the system makes sure directx updates

	//----------------------------------------------------------------

	myLight*   Lights[MAX_LIGHTS];

	//----------------------------------------------------------------

	// The current number of lights in the system

	//----------------------------------------------------------------

	int		   m_nLights;

	//----------------------------------------------------------------

	// Adds a light to the Lights array

	//----------------------------------------------------------------

	void addLight( myLight* );

	//----------------------------------------------------------------

	// Makes sure that if a light has changed it is updated

	//----------------------------------------------------------------

	void Update(float);
};


//----------------------------------------------------------------

// Adds a light to the Lights array

//----------------------------------------------------------------

void myLightSystem::addLight( myLight* pLight )
{
	for ( int i=0; i<MAX_LIGHTS; i++ )
	{
		if ( Lights[i] == NULL )
		{
			Lights[ i ] = pLight;
			d3dApp.m_pd3dDevice->SetLight( i, pLight->Light );
			d3dApp.m_pd3dDevice->LightEnable( i, TRUE );
			return;
		}
	}
}
//------------------------------------------------------------

// Makes sure that if a light has changed it is updated

//------------------------------------------------------------

void myLightSystem::Update(float m_fElapsedTime)
{
	for ( int i=0; i<MAX_LIGHTS; i++ )
	{
		if( Lights[i] == NULL )
		{
			continue;
		}

		d3dApp.m_pd3dDevice->SetLight( i, Lights[i]->Light );
		d3dApp.m_pd3dDevice->LightEnable( i, Lights[i]->Alive );
		
		//------------------------------------------------------------

		// No longer process this light if it isn''t alive anymore

		//------------------------------------------------------------

		if ( !Lights[i]->Alive )
		{
			Lights[i] = NULL;
		}
	}
}



void classA :: createLight()
{
    m_Light = new myLight();
    //code to set all the values for the light, diffuse, etc....

    g_LightSystem.addLight( m_Light );
}

void classA :: Load ()
{
   createLight();
}

void classA :: Update ()
{

	if ( m_Light && m_Light->Light )
	{ 
		if( m_Light->Alive )
		{
   			m_Light->Light->Position.x = Position.x; //left right

			m_Light->Light->Position.y = Position.y + 5; //  torwards camera

			m_Light->Light->Position.z = Position.z; //up down

			m_Light->Changed = true;
			m_Light->Alive = m_Alive;
		}
		else
		{
			SAFE_DELETE( m_Light );
		}
	}
}