Streamed Levels, Test If Actor Is In Level Bounds

Overview

Author: ()

Dear Community,

Here's how you can determine if an actor is within the bounds of a streamed in level!

//in playercontroller class

//Get the Currently Streamed Levels
const TArray& StreamedLevels = GetWorld()->StreamingLevels;

for(const ULevelStreaming* EachLevelStreaming : StreamedLevels)
{
    if( !EachLevelStreaming) 
    {
        continue;
    }
    
    ULevel* EachLevel =  EachLevelStreaming->GetLoadedLevel();
    
    //Is This Level Valid and Visible?
    if( !EachLevel 

 !EachLevel->bIsVisible) 
    {
        continue;
    }
         
    //Print Name of current Level Streaming to know which level the unit is in!
    ClientMessage( EachLevelStreaming->GetWorldAssetPackageName() );
      
    //Is the Player Location Within this Level's Bounds
    if(ALevelBounds::CalculateLevelBounds(EachLevel).IsInside(GetPawn()->GetActorLocation()))
    {
        ClientMessage("Yes Player Is Within This Level");
    }
}

Calculate Level Bounds

The most notable function here is:

FBox ALevelBounds::CalculateLevelBounds

IsInside

CalculateLevelBounds returns an FBox,

IsInside is an FBox function that takes in an FVector and sees if the FVector is within that box's bounds

ALevelBounds::CalculateLevelBounds(EachLevel).IsInside(GetPawn()->GetActorLocation())

Getting the Streaming Level Name

Please note as of 4.8 the way to obtain the name of the streaming level is:

EachLevelStreaming->GetWorldAssetPackageName()

Summary

Enjoy!

()