GetInputAxisValue — get current value of a named input axis (-1 to 1)

Legacy Input System. The axis name must match one defined in Project Settings → Input → Axis Mappings.

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).

WASD character movement using AddMovementInput with input axis events

Pattern: InputAxis MoveForward → Multiply_FloatFloat(A=AxisValue, B=1.0) → AddMovementInput(WorldDirection=GetActorForwardVector, ScaleValue=Product). Repeat for MoveRight with GetActorRightVector. Key pins: AddMovementInput inputs: 'WorldDirection' (Vector) and 'ScaleValue' (float). Input Axis event output pin is named 'Axis Value' (float).

MakeRotFromX — make Rotator with X-axis aligned to input Vector

Good for aligning to impact normals. MakeRotFromZ aligns Z-axis (good for surface normals from below).

MakeRotFromZ — make Rotator with Z-axis aligned to input Vector

Vector

A 3D point or direction (X, Y, Z). Used for positions, directions, scales. Z is up by default in UE.

Rotator

A 3D rotation (Pitch, Yaw, Roll) in degrees. Combine with Vector for full positioning.

Smooth rotation toward a target location using RInterpTo on Tick

Pattern: EventTick → FindLookAtRotation(Start=GetActorLocation, Target=TargetLocation) → RInterpTo(Current=GetActorRotation, Target=LookAt, DeltaTime=DeltaSeconds, InterpSpeed=5.0) → SetActorRotation(NewRotation=InterpResult). Key pins: FindLookAtRotation inputs are 'Start' and 'Target' (both Vectors). RInterpTo inputs: 'Current' (Rotator), 'Target' (Rotator), 'DeltaTime' (float), 'InterpSpeed' (float). SetActorRotation input: 'NewRotation' (Rotator).

Atan2 — two-argument arctangent for angle calculation

Returns radians. Use RadiansToDegrees to convert.

SetActorScale3D — set actor scale