Create a box trace V4

gistfile1.cpp

FHitResult HitResult;

FVector WorldCenter = Mesh->GetComponentLocation(); // Get the center of the meshFVector 
SweepExtent = Mesh->GetStaticMesh()->GetBounds().BoxExtent; // Get the extent of the meshFRotator
ActorRotation = Mesh->GetComponentRotation(); // Get the rotation of the meshFQuat

QuatRotation = FQuat(ActorRotation); // Convert the rotation to a quaternion
SweepExtent += FVector(5.0f, 5.0f, 5.0f); // Add a little extra to the extent

FCollisionQueryParams QueryParams;
QueryParams.AddIgnoredActor(this);
QueryParams.bTraceComplex = true;

FCollisionShape BoxCollision = FCollisionShape::MakeBox(SweepExtent);

GetWorld()->SweepSingleByChannel(HitResult, WorldCenter, WorldCenter, QuatRotation, ECC_WorldStatic, BoxCollision, QueryParams);

DrawDebugBox(GetWorld(), WorldCenter, SweepExtent, QuatRotation, FColor::Red, false, 2.0f); // Draw a debug box to visualize the sweep

if(!HitResult.bBlockingHit)
{    
  DestroyBarricade();
}