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).

FindLookAtRotation — get rotation to look from Start toward Target

FindLookAtRotation — rotation from Start point looking at Target point

Returns the Rotator needed to look from Start toward Target. Common for aiming and facing.

EventHit — fires when actor is hit by or hits something

Requires Simulation Generates Hit Events on physics body.

StopMontage — stop a currently playing AnimMontage

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).

BoxTraceSingle — box sweep for collision detection

OnHit

Fires when a physics collision happens. Use for impact effects, damage on contact.

Atan2 — two-argument arctangent for angle calculation

Returns radians. Use RadiansToDegrees to convert.

SpawnEmitterAtLocation — spawn a legacy Cascade particle system

Legacy Cascade system. Prefer Niagara (SpawnSystemAtLocation) for new projects.