FURL

Used in singleplayer and multiplayer, contains important data.

Init

• In PIE the URL is made in UGameInstance::StartPlayInEditorGameInstance.
• FUrlConfig FURL::UrlConfig is initialized on engine init (UEngine::Init) with FURL::StaticInit.

Portal

In UWorld::SpawnPlayActor, AGameModeBase::Login, AGameModeBase::InitNewPlayer the passed Portal (that’s notably used in AGameModeBase::FindPlayerStart_Implementation with PlayerStartTag to find a player start) comes from the URL.

Warning regading Current Camera Location

Setting a portal overrides this setting in PIE

To address this issue in PIE you can override Login in the game mode and read PlaySettings->LastExecutedPlayModeLocation (with ULevelEditorPlaySettings)

To set your portal string:

• go in DefaultEngine.ini
• if it doesn’t already exist, add a URL section
• under this section, add a Portal key
• write your string next as the value Full result:

[URL]  
Portal=StartPortal