all ScreenSelect derivatives already have a hard-coded subscribe to PlayerJoined

stepmania/Themes/default/metrics.ini

@@ -166,7 +166,7 @@ HelpText=ScreenString("HelpTextNormal")
 IdleCommentSeconds=0
 IdleTimeoutSeconds=0
 TimerSeconds=0
-UpdateOnMessage="PlayerJoined"
+UpdateOnMessage=""
 PrevScreen="ScreenTitleMenu"
 ChoiceNames="1,2,3"
 # The "name" here affects the announcer, eg. "ScreenSelectStyle comment single".

stepmania/src/ScreenSelect.cpp

@@ -28,7 +28,7 @@ void ScreenSelect::Init()
 	split( UPDATE_ON_MESSAGE, ",", m_asSubscribedMessages );
 	for( unsigned i = 0; i < m_asSubscribedMessages.size(); ++i )
 		MESSAGEMAN->Subscribe( this, m_asSubscribedMessages[i] );
-	// Only subscribe once.
+	// Subscribe to PlayerJoined, if not already.
 	if( !MESSAGEMAN->IsSubscribedToMessage(this, Message_PlayerJoined) )
 		this->SubscribeToMessage( Message_PlayerJoined );