EnhancedInputAction — Enhanced Input system action event

K2Node_EnhancedInputAction. ActionValue type depends on InputAction (Bool, Float, Axis2D, Axis3D). Triggers: Started, Ongoing, Triggered, Completed, Canceled.

Enhanced Input

The modern UE input system (5.0+). InputAction + InputMappingContext replace the legacy axis/action mappings.

AddMappingContext — add input mapping context to Enhanced Input subsystem

UEnhancedInputLocalPlayerSubsystem::AddMappingContext. Get subsystem via GetEnhancedInputLocalPlayerSubsystem.

AddMappingContext — add Enhanced Input mapping context to player

Get subsystem: GetSubsystem(UEnhancedInputLocalPlayerSubsystem, GetPlayerController(0)). Call in EventBeginPlay on the Character or PlayerController. Priority: higher number overrides lower number mappings.

Enhanced Input setup: add mapping context and bind actions in UE5

SETUP (once per project): 1. Create Input Mapping Context (IMC_Default) in content browser. 2. Create Input Actions (IA_Move, IA_Jump, IA_Look) — set Value Type. 3. In IMC_Default, map keys to each IA. IN CHARACTER EventBeginPlay: GetController → CastTo<PlayerController> → GetSubsystem(UEnhancedInputLocalPlayerSubsystem) → AddMappingContext(IMC_Default, Priority=0). IN EVENT GRAPH: Right-click → search IA_Move → 'IA_Move (EnhancedInputAction)' node appears with Triggered/Started/Completed exec outputs and 'Action Value' data output. For 2D movement: IA_Move → GetAxis2D(ActionValue) → X to AddMovementInput(GetActorRightVector, ScaleValue=X), Y to AddMovementInput(GetActorForwardVector, ScaleValue=Y).

Enhanced Input Action asset is missing

Why: A node references the InputAction '{ia}' which was deleted, renamed, or never created. The compiler can't bind to it. Fix: In Content Browser, search for '{ia}'. If found: re-link the node by dropping it on the workspace + replacing the broken reference. If missing: create the InputAction (Content Browser → right-click → Input → Input Action), then add it to your InputMappingContext.

Get Enhanced Input Axis Value — read 1D/2D/3D axis from InputActionValue

Call GetAxis(1D), GetAxis2D, or GetAxis3D depending on IA type. For movement IA mapped to WASD: use GetAxis2D (X=horizontal, Y=vertical).

Greater Equal (float) — A >= B

Power — raise base to exponent power

Internal function name is MultiplyMultiply_FloatFloat (operator **).

Less (float) — A < B