Event dispatcher pattern for decoupled communication between actors

Pattern: Actor A declares EventDispatcher OnScoreChanged(int NewScore). Actor B (listener) BeginPlay: GetActorOfClass(A) → BindEvent(OnScoreChanged) → custom event handler. Actor A calls OnScoreChanged.Broadcast(Score) when score changes. Bind in BeginPlay, Unbind in EndPlay to avoid dangling references.

BreakVector2D — decompose FVector2D into X Y

UnPossess — detach Controller from currently possessed Pawn

MultiGate — distribute execution across multiple outputs

Pickup and collectible system with overlap trigger

Pattern: Pickup actor with SphereCollision(overlap), StaticMesh visual. OnComponentBeginOverlap → CastTo PlayerCharacter → Success: call AddScore/AddItem interface on player → PlaySoundAtLocation → SpawnEmitterAtLocation → DestroyActor(self). Set collision to OverlapOnlyPawn for performance.

BreakVector — decompose FVector into X Y Z

Possess — make a Controller possess a Pawn

SetSimulatePhysics — enable or disable physics simulation on a component

Call on the mesh/primitive component, NOT on the actor itself. Use GetMesh() to get SkeletalMeshComponent first.

Less (float) — A < B

BreakRotator — decompose FRotator into Roll Pitch Yaw

UKismetMathLibrary::BreakRotator. NOT BreakRot.