SetPercent on ProgressBar — set progress bar fill amount

UProgressBar::SetPercent. 0.0 to 1.0 range.

Widget health bar HUD that updates from player health variable

Pattern: WBP_HealthBar with ProgressBar(HealthBar, BindWidget). Player BeginPlay: CreateWidget(WBP_HealthBar, PC) → SET WidgetRef → AddToViewport. On health change: WidgetRef → SetPercent(HealthBar, CurrentHealth/MaxHealth). Alternative: use property binding in widget designer for auto-update.

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Pressure plate trigger that activates when enough weight is on it

Pattern: BoxCollision trigger, variable OverlappingActors(int)=0. OnBeginOverlap: OverlappingActors++ → Branch(OverlappingActors >= RequiredCount) → Activate. OnEndOverlap: OverlappingActors-- → Branch(OverlappingActors < RequiredCount) → Deactivate. Use interface or event dispatcher to notify connected actors (doors, platforms).

Less (float) — A < B

Sound Cue

A graph that mixes and routes one or more Sound Waves — fades, randomizes, attenuates. Older but battle-tested.

Select (float) — choose between two floats based on bool condition

Pure node. bPickA=true returns A, bPickA=false returns B. Works for any type.

LaunchCharacter — launch character with velocity

ACharacter::LaunchCharacter. Good for knockback, bouncing, jumppads.

RandomBoolWithWeight — random bool with probability weight

Weight 0.0=always false, 1.0=always true, 0.5=50%.

Elevator or moving platform with timeline and trigger

Pattern: Variables StartLocation(Vector), EndLocation(Vector). BeginPlay: SET StartLocation=GetActorLocation. Timeline MoveTimeline(Alpha 0→1 over Duration). Trigger overlap/button press → Play Timeline. Timeline Update: VLerp(StartLocation, EndLocation, Alpha) → SetActorLocation(Self, Result, bSweep=true). Finished: Delay → Reverse Timeline.