C++ BEGIN_READ函数代码示例

// Message handler for Secondary Ammo Icon
// Sets an ammo value
// takes two values:
//		byte:  ammo index
//		byte:  ammo value
int CHudAmmoSecondary::MsgFunc_SecAmmoVal( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );

	int index = READ_BYTE();
	if( index < 0 || index >= MAX_SEC_AMMO_VALUES )
		return 1;

	m_iAmmoAmounts[index] = READ_BYTE();
	m_iFlags |= HUD_ACTIVE;

	// check to see if there is anything left to draw
	int count = 0;
	for( int i = 0; i < MAX_SEC_AMMO_VALUES; i++ )
	{
		count += max( 0, m_iAmmoAmounts[i] );
	}

	if( count == 0 ) 
	{
		// the ammo fields are all empty, so turn off this hud area
		m_iFlags &= ~HUD_ACTIVE;
		return 1;
	}

	// make the icons light up
	m_fFade = 200.0f;

	return 1;
}

int CHudHealth::MsgFunc_Damage( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );

	int armor = READ_BYTE();	// armor
	int damageTaken = READ_BYTE();	// health
	long bitsDamage = READ_LONG(); // damage bits

	vec3_t vecFrom;

	for( int i = 0; i < 3; i++ )
		vecFrom[i] = READ_COORD();

	UpdateTiles( gHUD.m_flTime, bitsDamage );

	// Actually took damage?
	if( damageTaken > 0 || armor > 0 )
	{
		CalcDamageDirection( vecFrom );

                if( gMobileEngfuncs && damageTaken > 0 )
                {
			float time = damageTaken * 4.0f;

			if( time > 200.0f )
				time = 200.0f;
			gMobileEngfuncs->pfnVibrate( time, 0 );
                }
	}

	return 1;
}

int CHudAmmo::MsgFunc_HideWeapon( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );
	
	gHUD.m_iHideHUDDisplay = READ_BYTE();

	if (gEngfuncs.IsSpectateOnly())
		return 1;

	if ( gHUD.m_iHideHUDDisplay & ( HIDEHUD_WEAPONS | HIDEHUD_ALL ) )
	{
		static wrect_t nullrc;
		gpActiveSel = NULL;
		// Removed by Pcjoe
//		SetCrosshair( 0, nullrc, 0, 0, 0 );
	}
	else
	{
	/* Removed by Pcjoe
		if ( m_pWeapon )
			SetCrosshair( m_pWeapon->hCrosshair, m_pWeapon->rcCrosshair, 255, 255, 255 );
	*/
	}

	return 1;
}

int CHudMOTD :: MsgFunc_MOTD( const char *pszName, int iSize, void *pbuf )
{
	if( m_iFlags & HUD_ACTIVE )
	{
		Reset(); // clear the current MOTD in prep for this one
	}

	BEGIN_READ( pszName, pbuf, iSize );

	int is_finished = READ_BYTE();
	Q_strcat( m_szMOTD, READ_STRING( ));

	if( is_finished )
	{
		m_iFlags |= HUD_ACTIVE;

		MOTD_DISPLAY_TIME = CVAR_GET_FLOAT( "motd_display_time" );

		m_flActiveTill = gHUD.m_flTime + MOTD_DISPLAY_TIME;

		// count the number of lines in the MOTD
		for( char *sz = m_szMOTD; *sz != 0; sz++ )
			if( *sz == '\n' ) m_iLines++;
	}

	END_READ();

	return 1;
}

int CHud::MsgFunc_SetFOV(const char *pszName,  int iSize, void *pbuf)
{
	BEGIN_READ( pbuf, iSize );

	int newfov = READ_BYTE();
	int def_fov = CVAR_GET_FLOAT( "default_fov" );

	if ( newfov == 0 )
	{
		m_iFOV = def_fov;
	}
	else
	{
		m_iFOV = newfov;
	}

	// the clients fov is actually set in the client data update section of the hud

	// Set a new sensitivity
	if ( m_iFOV == def_fov )
	{  
		// reset to saved sensitivity
		m_flMouseSensitivity = 0;
	}
	else
	{  
		// set a new sensitivity that is proportional to the change from the FOV default
		m_flMouseSensitivity = sensitivity->value * ((float)newfov / (float)def_fov) * CVAR_GET_FLOAT("zoom_sensitivity_ratio");
	}

	return 1;
}

//LRC
int CHud::MsgFunc_SetFog( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );

	for ( int i = 0; i < 3; i++ )
		 g_fFogColor[ i ] = READ_BYTE();

	g_fFadeDuration = READ_SHORT();
	g_fStartDist = READ_SHORT();

	if (g_fFadeDuration > 0)
	{
//		// fading in
		g_iFinalEndDist = READ_SHORT();
		g_fEndDist = FOG_LIMIT;
	}
	else if (g_fFadeDuration < 0)
	{
//		// fading out
		g_iFinalEndDist = g_fEndDist = READ_SHORT();
	}
	else
	{
		g_fEndDist = READ_SHORT();
	}
	return 1;
}

void CVoiceStatus::HandleVoiceMaskMsg(int iSize, void *pbuf)
{
	BEGIN_READ( pbuf, iSize );

	uint32 dw;
	for(dw=0; dw < VOICE_MAX_PLAYERS_DW; dw++)
	{
		m_AudiblePlayers.SetDWord(dw, (uint32)READ_LONG());
		m_ServerBannedPlayers.SetDWord(dw, (uint32)READ_LONG());

		if(gEngfuncs.pfnGetCvarFloat("voice_clientdebug"))
		{
			char str[256];
			gEngfuncs.pfnConsolePrint("CVoiceStatus::HandleVoiceMaskMsg\n");
			
			sprintf(str, "    - m_AudiblePlayers[%d] = %lu\n", dw, m_AudiblePlayers.GetDWord(dw));
			gEngfuncs.pfnConsolePrint(str);
			
			sprintf(str, "    - m_ServerBannedPlayers[%d] = %lu\n", dw, m_ServerBannedPlayers.GetDWord(dw));
			gEngfuncs.pfnConsolePrint(str);
		}
	}

	m_bServerModEnable = READ_BYTE();
}

void CHud :: MsgFunc_SetSkin( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );
	gHUD.m_iSkin = READ_BYTE();
	cl_entity_s *view = gEngfuncs.GetViewModel();
	view->curstate.skin = gHUD.m_iSkin;
}

// buz: special tank message
int CHud :: MsgFunc_SpecTank( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );
	
	m_SpecTank_on = READ_BYTE();
	if (m_SpecTank_on == 0) // turn off
		return 1;
	else if (m_SpecTank_on == 2) // only ammo update
	{
		m_SpecTank_Ammo = READ_LONG();
		m_SpecTank_Ammo2 = READ_LONG();
		m_SpecTank_CrossSize = READ_BYTE();
	}
	else // turn on
	{
		m_SpecTank_point.x = READ_COORD();
		m_SpecTank_point.y = READ_COORD();
		m_SpecTank_point.z = READ_COORD();
		m_SpecTank_defYaw = READ_COORD();
		m_SpecTank_coneHor = READ_COORD();
		m_SpecTank_coneVer = READ_COORD();
		m_SpecTank_distFwd = READ_COORD();
		m_SpecTank_distUp = READ_COORD();
		m_SpecTank_Ammo = READ_LONG();
		m_SpecTank_Ammo2 = READ_LONG();
		m_SpecTank_CrossSize = READ_BYTE();
	}
	return 1;
}

//LRC
void CHud :: MsgFunc_SetFog( const char *pszName, int iSize, void *pbuf )
{
//	CONPRINT("MSG:SetFog");
	BEGIN_READ( pbuf, iSize );

	for ( int i = 0; i < 3; i++ )
		 g_fFogColor[ i ] = READ_BYTE();

	g_fFadeDuration = READ_SHORT();
	g_fStartDist = READ_SHORT();

	if (g_fFadeDuration > 0)
	{
//		// fading in
//		g_fStartDist = READ_SHORT();
		g_iFinalEndDist = READ_SHORT();
//		g_fStartDist = FOG_LIMIT;
		g_fEndDist = FOG_LIMIT;
	}
	else if (g_fFadeDuration < 0)
	{
//		// fading out
//		g_iFinalStartDist =
		g_iFinalEndDist = g_fEndDist = READ_SHORT();
	}
	else
	{
//		g_fStartDist = READ_SHORT();
		g_fEndDist = READ_SHORT();
	}
}

// QUAKECLASSIC
int CHud :: MsgFunc_QItems(const char *pszName, int iSize, void *pbuf)
{
	BEGIN_READ( pbuf, iSize );
	m_iQuakeItems = READ_LONG();

	return 1;
}

//
// WeaponList -- Tells the hud about a new weapon type.
//
int CHudAmmo::MsgFunc_WeaponList(const char *pszName, int iSize, void *pbuf)
{
	BEGIN_READ(pbuf, iSize);

	WEAPON Weapon;

	strcpy(Weapon.szName, READ_STRING());
	Weapon.iAmmoType = (int)READ_CHAR();

	Weapon.iMax1 = READ_BYTE();
	if(Weapon.iMax1 == 255)
		Weapon.iMax1 = -1;

	Weapon.iAmmo2Type = READ_BYTE();
	Weapon.iMax2      = READ_BYTE();
	if(Weapon.iMax2 == 255)
		Weapon.iMax2 = -1;

	Weapon.iSlot    = READ_BYTE();
	Weapon.iSlotPos = READ_BYTE();
	Weapon.iId      = READ_LONG();

	Weapon.iFlags = READ_BYTE();

	Weapon.iClip = 0;

	gWR.AddWeapon(&Weapon);

	return 1;
}

//LRC
void CHud :: MsgFunc_KeyedDLight( const char *pszName, int iSize, void *pbuf )
{
//	CONPRINT("MSG:KeyedDLight");
	BEGIN_READ( pbuf, iSize );

// as-yet unused:
//	float	decay;				// drop this each second
//	float	minlight;			// don't add when contributing less
//	qboolean	dark;			// subtracts light instead of adding (doesn't seem to do anything?)

	int iKey = READ_BYTE();
	dlight_t *dl = gEngfuncs.pEfxAPI->CL_AllocDlight( iKey );

	int bActive = READ_BYTE();
	if (!bActive)
	{
		// die instantly
		dl->die = gEngfuncs.GetClientTime();
	}
	else
	{
		// never die
		dl->die = gEngfuncs.GetClientTime() + 1E6;

		dl->origin[0] = READ_COORD();
		dl->origin[1] = READ_COORD();
		dl->origin[2] = READ_COORD();
		dl->radius = READ_BYTE();
		dl->color.r = READ_BYTE();
		dl->color.g = READ_BYTE();
		dl->color.b = READ_BYTE();
	}
}

int CHud :: MsgFunc_GameMode(const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );
	m_Teamplay = READ_BYTE();

	return 1;
}

void CHud :: MsgFunc_SetBody( const char *pszName, int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );
	gHUD.m_iBody = READ_BYTE();
	cl_entity_s *view = gEngfuncs.GetViewModel();
	view->curstate.body = gHUD.m_iBody;
	//gEngfuncs.pfnWeaponAnim( 2, gHUD.m_iBody );//UNDONE: custom frame for view model don't working
}