Unreal Engine 4.21 Released!

[DamirH]

New: APlayerState now maintains a reference to the Pawn it controls. APawn::PlayerState is now private and setting it will update APlayerState’s bi-directional Pawn reference. Use GetPlayerState and SetPlayerState to access / manipulate.

New: Added template cast versions of UWorld::GetFirstPlayerController, UWorld::GetFirstLocalPlayerFromController, AActor::GetGameInstance, AController::GetPlayerState, APawn::GetController, and UUserWidget::GetOwningLocalPlayer.

New: Added CreateWeakLambda() and BindWeakLambda() to delegates and AddWeakLambda() to multicast delegates. It enables a lambda to be bound with a UObject* where the lambda will not get invoked by the delegate if the object has been destroyed.

New: Added a new allocator, TNonRelocatableInlineAllocator, which eliminates conditional logic from the GetAllocation function at the expense of not being trivially relocatable. It provides a significant performance increase for allocators that are dereferenced frequently. However, it prevents instances of it being stored inside other allocators, which are expected to be trivially relocatable by default.

New: Made UActorComponent.bCanEverAffectNavigation configurable via ini files so that it can be change perf component class project wide. Useful if you want only deliberately picked components to affect navigation. This also allowed for some optimizations in SceneComponent resulting in never calling PostUpdateNavigationData for components that are never nav-relevant.

Animation Notify Improvements New Animation Notifies have been added that enable you to manage the state of dynamics and cloth simulations. We have also updated Notify add/replace menus to use class pickers for better searching of BP and native notifies. To add a Notify, right-click on a Notifies track, then under Add Notify, select the type of Notify you wish to add.

**Improvement: **The Widget Reflector is getting a big boost!

• It now has a Details view in Editor builds enabling you to see the realtime UObject values of the corresponding UWidget if the Slate widget was created by a UMG counterpart.
• There are now two picking modes, 1) what we’ve always had, hit testing based picking, and 2) visual tree picking which actively captures the paint stack and enables you to hit test against the painted geometry rather than the hit testable geometry. It’s very useful when examining elements on a HUD.

The best features always get the least attention!

New: Fix typo in taskgraph. May offer a slight performance improvement.

I demand clarification!