Method SetParent

Source/Engine/Scripting/Script.cpp:81–143

}

void Script::SetParent(Actor* value, bool canBreakPrefabLink)
{
    // Check if value won't change
    if (_parent == value)
        return;
    if (IsDuringPlay() && !IsInMainThread())
    {
        LOG(Error, "Editing scene hierarchy is only allowed on a main thread.");
        return;
    }

    // Unlink from the old one
    if (_parent)
    {
        if (!value && _parent->IsDuringPlay() && _parent->IsActiveInHierarchy() && GetEnabled() && _wasEnableCalled)
        {
            // Call disable when script is removed from actor (new actor is null)
            Disable();
        }

        _parent->Scripts.RemoveKeepOrder(this);
    }

    // Set value
    const auto previous = _parent;
    _parent = value;

    // Link to the new one
    if (_parent)
    {
        _parent->Scripts.Add(this);
    }

    // Break prefab link for prefab instance objects
    if (HasPrefabLink() && IsDuringPlay() && canBreakPrefabLink)
    {
        BreakPrefabLink();
    }

    // Check if actor is already in play but script isn't
    if (value && value->IsDuringPlay() && !IsDuringPlay())
    {
        // Prepare for gameplay
        Initialize();
        {
            SceneBeginData beginData;
            BeginPlay(&beginData);
            beginData.OnDone();
        }

        // Fire events for scripting
        if (GetEnabled())
        {
            Start();
            Enable();
        }
    }
    else if (!previous && value && value->IsDuringPlay() && value->IsActiveInHierarchy() && GetEnabled())