A little optimizations.

cl_dll/hud_spectator.cpp

@@ -842,7 +842,7 @@ bool CHudSpectator::ParseOverviewFile()
 	m_OverviewData.layersHeights[0] = 0.0f;
 	strcpy( m_OverviewData.map, gEngfuncs.pfnGetLevelName() );
 
-	if( strlen( m_OverviewData.map ) == 0 )
+	if( m_OverviewData.map[0] == '\0' )
 		return false; // not active yet
 
 	strcpy( levelname, m_OverviewData.map + 5 );

cl_dll/input.cpp

@@ -169,7 +169,7 @@ int KB_ConvertString( char *in, char **ppout )
 			*pEnd = '\0';
 
 			pBinding = NULL;
-			if( strlen( binding + 1 ) > 0 )
+			if( binding[1] != '\0' )
 			{
 				// See if there is a binding for binding?
 				pBinding = gEngfuncs.Key_LookupBinding( binding + 1 );

dlls/animation.cpp

@@ -203,7 +203,7 @@ void SequencePrecache( void *pmodel, const char *pSequenceName )
 			// of it's name if it is.
 			if( IsSoundEvent( pevent[i].event ) )
 			{
-				if( !strlen( pevent[i].options ) )
+				if( pevent[i].options[0] == '\0' )
 				{
 					ALERT( at_error, "Bad sound event %d in sequence %s :: %s (sound is \"%s\")\n", pevent[i].event, pstudiohdr->name, pSequenceName, pevent[i].options );
 				}

dlls/bmodels.cpp

@@ -434,7 +434,7 @@ void CFuncRotating::Precache( void )
 	BOOL NullSound = FALSE;
 
 	// set up fan sounds
-	if( !FStringNull( pev->message ) && strlen( szSoundFile ) > 0 )
+	if( !FStringNull( pev->message ) && szSoundFile[0] != '\0' )
 	{
 		// if a path is set for a wave, use it
 	}

dlls/buttons.cpp

@@ -694,7 +694,7 @@ CBaseButton::BUTTON_CODE CBaseButton::ButtonResponseToTouch( void )
 void CBaseButton::ButtonTouch( CBaseEntity *pOther )
 {
 	// Ignore touches by anything but players
-	if( !FClassnameIs( pOther->pev, "player" ) )
+	if( !pOther->IsPlayer() )
 		return;
 
 	m_hActivator = pOther;

dlls/doors.cpp

@@ -520,10 +520,8 @@ void CBaseDoor::Precache( void )
 //
 void CBaseDoor::DoorTouch( CBaseEntity *pOther )
 {
-	entvars_t *pevToucher = pOther->pev;
-
 	// Ignore touches by anything but players
-	if( !FClassnameIs( pevToucher, "player" ) )
+	if( !pOther->IsPlayer() )
 		return;
 
 	// If door has master, and it's not ready to trigger, 
@@ -542,7 +540,7 @@ void CBaseDoor::DoorTouch( CBaseEntity *pOther )
 
 	m_hActivator = pOther;// remember who activated the door
 
-	if( DoorActivate())
+	if( DoorActivate() )
 		SetTouch( NULL ); // Temporarily disable the touch function, until movement is finished.
 }
 

dlls/h_battery.cpp

@@ -106,8 +106,12 @@ void CRecharge::Precache()
 
 void CRecharge::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
 { 
+	// Make sure that we have a caller
+	if( !pActivator )
+		return;
+
 	// if it's not a player, ignore
-	if( !FClassnameIs( pActivator->pev, "player" ) )
+	if( !pActivator->IsPlayer() )
 		return;
 
 	// if there is no juice left, turn it off
@@ -135,16 +139,8 @@ void CRecharge::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE use
 	if( m_flNextCharge >= gpGlobals->time )
 		return;
 
-	// Make sure that we have a caller
-	if( !pActivator )
-		return;
-
 	m_hActivator = pActivator;
 
-	//only recharge the player
-	if( !m_hActivator->IsPlayer() )
-		return;
-	
 	// Play the on sound or the looping charging sound
 	if( !m_iOn )
 	{
@@ -152,6 +148,7 @@ void CRecharge::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE use
 		EMIT_SOUND( ENT( pev ), CHAN_ITEM, "items/suitchargeok1.wav", 0.85, ATTN_NORM );
 		m_flSoundTime = 0.56 + gpGlobals->time;
 	}
+
 	if( ( m_iOn == 1 ) && ( m_flSoundTime <= gpGlobals->time ) )
 	{
 		m_iOn++;

dlls/multiplay_gamerules.cpp

@@ -1331,7 +1331,8 @@ int ReloadMapCycleFile( const char *filename, mapcycle_t *cycle )
 			hasbuffer = 0;
 
 			pFileList = COM_Parse( pFileList );
-			if( strlen( com_token ) <= 0 )
+
+			if( com_token[0] == '\0' )
 				break;
 
 			strcpy( szMap, com_token );
@@ -1340,7 +1341,8 @@ int ReloadMapCycleFile( const char *filename, mapcycle_t *cycle )
 			if( COM_TokenWaiting( pFileList ) )
 			{
 				pFileList = COM_Parse( pFileList );
-				if( strlen( com_token ) > 0 )
+
+				if( com_token[0] != '\0' )
 				{
 					hasbuffer = 1;
 					strcpy( szBuffer, com_token );
@@ -1496,7 +1498,8 @@ void ExtractCommandString( char *s, char *szCommand )
 		*o = 0;
 
 		strcat( szCommand, pkey );
-		if( strlen( value ) > 0 )
+
+		if( value[0] != '\0' )
 		{
 			strcat( szCommand, " " );
 			strcat( szCommand, value );
@@ -1631,13 +1634,15 @@ void CHalfLifeMultiplay::ChangeLevel( void )
 	{
 		ALERT( at_console, "PLAYER COUNT:  min %i max %i current %i\n", minplayers, maxplayers, curplayers );
 	}
-	if( strlen( szRules ) > 0 )
+
+	if( szRules != '\0' )
 	{
 		ALERT( at_console, "RULES:  %s\n", szRules );
 	}
 
 	CHANGE_LEVEL( szNextMap, NULL );
-	if( strlen( szCommands ) > 0 )
+
+	if( szCommands[0] != '\0' )
 	{
 		SERVER_COMMAND( szCommands );
 	}

dlls/plats.cpp

@@ -358,8 +358,7 @@ void CPlatTrigger::SpawnInsideTrigger( CFuncPlat *pPlatform )
 void CPlatTrigger::Touch( CBaseEntity *pOther )
 {
 	// Ignore touches by non-players
-	entvars_t *pevToucher = pOther->pev;
+	if( !pOther->IsPlayer() )
-	if( !FClassnameIs( pevToucher, "player" ) )
 		return;
 
 	CFuncPlat *pPlatform = (CFuncPlat*)(CBaseEntity*)m_hPlatform;

dlls/player.cpp

@@ -2762,7 +2762,7 @@ edict_t *EntSelectSpawnPoint( CBaseEntity *pPlayer )
 	}
 
 	// If startspot is set, (re)spawn there.
-	if( FStringNull( gpGlobals->startspot ) || !strlen(STRING( gpGlobals->startspot ) ) )
+	if( FStringNull( gpGlobals->startspot ) || (STRING( gpGlobals->startspot ) )[0] == '\0')
 	{
 		pSpot = UTIL_FindEntityByClassname( NULL, "info_player_start" );
 		if( !FNullEnt( pSpot ) )
@@ -4432,7 +4432,7 @@ void CBasePlayer::DropPlayerItem( char *pszItemName )
 		return;
 	}
 
-	if( !strlen( pszItemName ) )
+	if( pszItemName[0] == '\0' )
 	{
 		// if this string has no length, the client didn't type a name!
 		// assume player wants to drop the active item.

dlls/scripted.cpp

@@ -1068,14 +1068,17 @@ BOOL CScriptedSentence::AcceptableSpeaker( CBaseMonster *pMonster )
 	{
 		if( pev->spawnflags & SF_SENTENCE_FOLLOWERS )
 		{
-			if( pMonster->m_hTargetEnt == 0 || !FClassnameIs( pMonster->m_hTargetEnt->pev, "player" ) )
+			if( pMonster->m_hTargetEnt == 0 || !pMonster->m_hTargetEnt->IsPlayer() )
 				return FALSE;
 		}
+
 		BOOL override;
+
 		if( pev->spawnflags & SF_SENTENCE_INTERRUPT )
 			override = TRUE;
 		else
 			override = FALSE;
+
 		if( pMonster->CanPlaySentence( override ) )
 			return TRUE;
 	}

dlls/sound.cpp

@@ -184,7 +184,7 @@ void CAmbientGeneric::Spawn( void )
 
 	const char *szSoundFile = STRING( pev->message );
 
-	if( FStringNull( pev->message ) || strlen( szSoundFile ) < 1 )
+	if( FStringNull( pev->message ) || szSoundFile[0] == '\0' )
 	{
 		ALERT( at_error, "EMPTY AMBIENT AT: %f, %f, %f\n", pev->origin.x, pev->origin.y, pev->origin.z );
 		pev->nextthink = gpGlobals->time + 0.1;
@@ -218,7 +218,7 @@ void CAmbientGeneric::Precache( void )
 {
 	const char *szSoundFile = STRING( pev->message );
 
-	if( !FStringNull( pev->message ) && strlen( szSoundFile ) > 1 )
+	if( !FStringNull( pev->message ) && szSoundFile[0] != '\0' )
 	{
 		if( *szSoundFile != '!' )
 			PRECACHE_SOUND( szSoundFile );
@@ -1732,7 +1732,7 @@ void CSpeaker::Spawn( void )
 {
 	const char *szSoundFile = STRING( pev->message );
 
-	if( !m_preset && ( FStringNull( pev->message ) || strlen( szSoundFile ) < 1 ) )
+	if( !m_preset && ( FStringNull( pev->message ) || szSoundFile[0] == '\0' ) )
 	{
 		ALERT( at_error, "SPEAKER with no Level/Sentence! at: %f, %f, %f\n", pev->origin.x, pev->origin.y, pev->origin.z );
 		pev->nextthink = gpGlobals->time + 0.1;

dlls/teamplay_gamerules.cpp

@@ -52,14 +52,14 @@ CHalfLifeTeamplay::CHalfLifeTeamplay()
 		if( teamoverride.value )
 		{
 			const char *pTeamList = STRING( pWorld->v.team );
-			if( pTeamList && strlen( pTeamList ) )
+			if( pTeamList && pTeamList[0] != '\0' )
 			{
 				strncpy( m_szTeamList, pTeamList, TEAMPLAY_TEAMLISTLENGTH );
 			}
 		}
 	}
 	// Has the server set teams
-	if( strlen( m_szTeamList ) )
+	if( m_szTeamList[0] != '\0' )
 		m_teamLimit = TRUE;
 	else
 		m_teamLimit = FALSE;

dlls/triggers.cpp

@@ -1124,7 +1124,7 @@ void CBaseTrigger::ActivateMultiTrigger( CBaseEntity *pActivator )
 	if( pev->nextthink > gpGlobals->time )
 		return;         // still waiting for reset time
 
-	if( !UTIL_IsMasterTriggered( m_sMaster,pActivator ) )
+	if( !UTIL_IsMasterTriggered( m_sMaster, pActivator ) )
 		return;
 
 	if( FClassnameIs( pev, "trigger_secret" ) )
@@ -1191,7 +1191,7 @@ void CBaseTrigger::CounterUse( CBaseEntity *pActivator, CBaseEntity *pCaller, US
 
 	BOOL fTellActivator =
 		( m_hActivator != 0 ) &&
-		FClassnameIs( m_hActivator->pev, "player" ) &&
+		m_hActivator->IsPlayer() &&
 		!FBitSet( pev->spawnflags, SPAWNFLAG_NOMESSAGE );
 	if( m_cTriggersLeft != 0 )
 	{
@@ -1499,7 +1499,7 @@ void CChangeLevel::ChangeLevelNow( CBaseEntity *pActivator )
 //
 void CChangeLevel::TouchChangeLevel( CBaseEntity *pOther )
 {
-	if( !FClassnameIs( pOther->pev, "player" ) )
+	if( !pOther->IsPlayer() )
 		return;
 
 	ChangeLevelNow( pOther );

dlls/util.cpp

@@ -2196,7 +2196,7 @@ int CRestore::ReadField( void *pBaseData, TYPEDESCRIPTION *pFields, int fieldCou
 							pString++;
 						}
 						pInputData = pString;
-						if( strlen( (char *)pInputData ) == 0 )
+						if( ( (char *)pInputData )[0] == '\0' )
 							*( (string_t *)pOutputData ) = 0;
 						else
 						{
@@ -2291,7 +2291,7 @@ int CRestore::ReadField( void *pBaseData, TYPEDESCRIPTION *pFields, int fieldCou
 						*( (void**)pOutputData ) = *(void **)pInputData;
 						break;
 					case FIELD_FUNCTION:
-						if( strlen( (char *)pInputData ) == 0 )
+						if( ( (char *)pInputData )[0] == '\0' )
 							*( (void**)pOutputData ) = 0;
 						else
 							*( (void**)pOutputData ) = (void*)FUNCTION_FROM_NAME( (char *)pInputData );