ServerTravel

GameModel有效后，不能包含：

1. %
2. ：或者 \

   bool UWorld::ServerTravel(const FString& FURL, bool bAbsolute, bool bShouldSkipGameNotify)
       bool AGameModeBase::CanServerTravel(const FString& FURL, bool bAbsolute)
           /** Handles request for server to travel to a new URL, with all players */
           void AGameModeBase::ProcessServerTravel(const FString& URL, bool bAbsolute)
           // Notify clients we're switching level and give them time to receive.
           APlayerController* AGameModeBase::ProcessClientTravel(FString& FURL, FGuid NextMapGuid, bool bSeamless, bool bAbsolute)
           //Seamless Travel
           void UWorld::SeamlessTravel(const FString& SeamlessTravelURL, bool bAbsolute, FGuid MapPackageGuid)

ClientTravel

void APlayerController::ClientTravel(const FString& URL, ETravelType TravelType, bool bSeamless, FGuid MapPackageGiuid)
    //ClientTravelInternal----(Reliable, Client)
    void APlayerController::ClientTravelInternal_Implementation(const FString& URL, ETravelType TravelType, bool bSeamless, FGuid MapPackageGuid)
        // Warn the client.
        void APlayerController::PreClientTravel( const FString& PendingURL, ETravelType TravelType, bool bIsSeamlessTravel )
        //Seamless Travel
        void UWorld::SeamlessTravel(const FString& SeamlessTravelURL, bool bAbsolute, FGuid MapPackageGuid)
        // Do the travel.
        void UEngine::SetClientTravel( UWorld *InWorld, const TCHAR* NextURL, ETravelType InTravelType )