CreateDynamicMaterialInstance — create runtime modifiable material

UPrimitiveComponent method. Store result in variable and reuse. Create once in BeginPlay.

Event Dispatcher: create, bind, and call with custom data

SETUP: In your BP, create an Event Dispatcher (e.g. 'OnPlayerDied') in the My Blueprint panel. BIND (in another BP): Get reference to actor → Bind Event to OnPlayerDied → connect a Custom Event as the target. CALL (in owning BP): Call OnPlayerDied (appears as a pink node) → this broadcasts to all bound listeners. Key: Event Dispatchers are called with 'Call <DispatcherName>' (not 'Broadcast'). Binding is done via 'Bind Event to <DispatcherName>' which has an 'Event' exec-like pin.

CreateSaveGameObject — create a new SaveGame instance

Cast ReturnValue to your SaveGame subclass (e.g. UBP_SaveGame) to set variables on it.

Create a Blueprint for a projectile that moves forward, bounces off walls, and explodes after 3 seconds

Create a Blueprint for a simple FPS weapon that shoots raycasts and deals damage

CreateSaveGameObject — create save game instance

UGameplayStatics::CreateSaveGameObject. Cast result to your SaveGame class.

CreateWidget — create a UserWidget instance

Always pass a valid PlayerController as OwningPlayer. Cast the ReturnValue to your specific widget class.

CreateDynamicMaterialInstance — create a runtime-editable material copy

Must call this before SetScalarParameterValue/SetVectorParameterValue. Store the result in a variable for reuse.

NewObject — create a new UObject instance (non-Actor)

For non-Actor objects (UObjects). Actors must use SpawnActorFromClass instead. Outer is usually 'self' or GetTransientPackage().

SpawnActorFromClass — spawn a new Actor into the world

Cast ReturnValue to the specific class to access its properties.