I want to use a custom level streaming class, as I have a few extra things I want to do on top of LevelStreamingDynamic. I created a simple derived class like the following:
UCLASS(BlueprintType)
class MONSTERMOBILE_API UMMLevelStreamingDynamic : public ULevelStreamingDynamic
{
GENERATED_UCLASS_BODY()
}
Editor Preferences has a setting under LevelEditorMiscSettings for DefaultLevelStreamingClass. Now my issue is that once I set my new derived class UMMLevelStreamingDynamic as the desired class, the setting gets cleared on relaunch of the editor, and this setting class appears as None. This setting is only used when the FStreamingLevelCollectionModel is constructed, thus changing the setting once the editor has loaded has no impact! Thus, I have to set it, relaunch the editor, and see it loads in blank each time. I am not sure why this keeps failing.
My DefaultEditorPerProjectUserSettings.ini has the following:
[/Script/UnrealEd.LevelEditorMiscSettings]
DefaultLevelStreamingClass=/Script/CoreUObject.Class’/Script/MonsterMobile.MMLevelStreamingDynamic’
I am really baffled why this is happening. It’s obvious the editor recognizes my class, as its a selectable value in the dropdown, but it fails to load on launch in the settings. My end goal is to setup a persistent level with all of my custom streaming levels, so if there is a better way to do this, please let me know.
Edit:
Doing a bit of digging, and found that the CDO loads a nullptr for the the settings during editor load. All of the other engine streaming level classes work fine, but my specific class doesn’t. I wonder if there’s some issue where the class is not yet loaded/known by the editor, and thus it fails to find the reference. If so, is there some way to ensure my class is loaded and available beforehand?