SetFieldOfView — set camera field of view angle

UCameraComponent method. Default 90.

Line trace from camera to detect what player is looking at

Pattern: GetPlayerController → GetPlayerViewPoint(outputs Location,Rotation) → GetForwardVector(Rotation) → Multiply_VectorFloat(A=Forward, B=TraceDistance) → Add_VectorVector(A=CameraLocation, B=Offset) → LineTraceByChannel(Start=CameraLocation, End=TraceEnd). GetPlayerViewPoint exec in='execute', exec out='then', outputs: 'Location' (Vector) and 'Rotation' (Rotator).

Camera

Defines a viewpoint into the world. The active PlayerController's view comes from one camera at a time.

SetViewTargetWithBlend — smoothly blend camera to a new view target

BlendTime in seconds. BlendFunc: VTBlend_Linear, VTBlend_Cubic, VTBlend_EaseIn, VTBlend_EaseOut. Call on the PlayerController.

LineTraceByChannel — raycast along a line and return first hit

TraceChannel: ETraceTypeQuery::TraceTypeQuery1=Visibility, TraceTypeQuery2=Camera. DrawDebugType: None/ForOneFrame/ForDuration/Persistent.

VInterpTo — smoothly interpolate a Vector toward target each frame

GetPlayerViewPoint — get camera world location and rotation

Outputs are 'Location' and 'Rotation' — NOT ReturnValue. Used for line traces from camera.

AddToViewport — add widget to the game viewport

UUserWidget::AddToViewport.

Smooth camera follow with lag using VInterpTo every tick

Pattern: EventTick → GetActorLocation(TargetActor) → VInterpTo(CurrentCameraLocation, TargetLocation, DeltaSeconds, InterpSpeed) → SetActorLocation(Camera, Result). InterpSpeed 3-10 for smooth follow. Alternative: use SpringArmComponent with CameraLag enabled.

Third person camera relative movement using controller rotation

Pattern: EnhancedInputAction IA_Move → GetControlRotation → MakeRotator(0, Yaw, 0) → GetForwardVector(YawRotation) = ForwardDir, GetRightVector(YawRotation) = RightDir. AddMovementInput(ForwardDir, InputY) + AddMovementInput(RightDir, InputX). SpringArm: UsePawnControlRotation=true. CharacterMovement: OrientRotationToMovement=true, bUseControllerDesiredRotation=false.