Collision fix not working

[sryan]

After utilising the sweep stuff defined in this post:

The move-left-then-right workaround

It’s not clear to me if the tweak we make using movement +1 then -1 is to work around a bug maybe related to our choice of character? Or is this just like a standard Unreal thing you need to do if other actors are going to push your character around?

Still seeing janky collisions and not sure why … perhaps I’ve misunderstood. Any thoughts?

// Called every frame
void AMovingPlatform::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);

	// if stationary there is no movement necessary
	if ( MaxDistance == 0.0 )
		return;
	
	FVector const NewLocation = GetActorLocation() + (PlatformVelocity*DeltaTime);
	FHitResult Hit;
	SetActorLocation(NewLocation, true, &Hit);

	if ( Hit.GetActor() )
	{
		UpdatePushedLocation(Hit);
		SetActorLocation(NewLocation);
	}
		
	
	DistanceMoved = FVector::Dist(AnchorLocation,NewLocation);
	if ( DistanceMoved > MaxDistance )
	{
		// We are moving the new anchor to be the start + *exactly* the max distance to guarantee Dist() is 0
		AnchorLocation = AnchorLocation + ( PlatformVelocity.GetSafeNormal() * MaxDistance );
		SetActorLocation(AnchorLocation);
		PlatformVelocity = -PlatformVelocity;		
	}
}

// updates the item that there is overlap with
void AMovingPlatform::UpdatePushedLocation(const FHitResult& HitResult )
{
	const double Distance = FVector::Dist(HitResult.TraceStart, HitResult.TraceEnd);
	const FVector Direction = PlatformVelocity.GetSafeNormal();
	const FVector Delta = Direction * Distance;
	HitResult.GetActor()->AddActorWorldOffset(Delta);	
}```

[sryan]

I found something in the comment in the lesson titled “DO NOT use EventTick …”.

The NB regarding sweep only occurring on the root component is spot on.