State machine pattern using enum variable and switch

Variables: CurrentState (your EState enum: Idle, Patrol, Chase, Attack, Dead). EventTick or custom Update event → Switch on EState(CurrentState) → Idle: [idle logic] → Patrol: [patrol logic] → Chase: [chase logic] etc. State transitions via custom events: OnEnemySpotted → SetVariable(CurrentState=EState::Chase). OnEnemyLost → SetVariable(CurrentState=EState::Patrol). OnDamaged → Branch(Health<=0) → True: SetVariable(CurrentState=EState::Dead). Key: Switch On Enum node — connect enum variable to the input, each value gets an exec output pin.

Flip-Flop

Alternates between A and B output pins on each execution. Useful for toggle switches and ping-pong logic.

Switch

Routes execution based on the value of an integer, name, or enum. Cleaner than chained Branches for >2 outcomes.

Main menu with widget switching and button navigation

Pattern: WBP_MainMenu with WidgetSwitcher containing panels (Main, Options, Credits). Buttons: OnClicked → SetActiveWidgetIndex(WidgetSwitcher, PanelIndex). Play button: RemoveFromParent → OpenLevel(GameMap). Quit: QuitGame. Level BP BeginPlay: CreateWidget(MainMenu) → AddToViewport → SetInputModeUIOnly → SetShowMouseCursor(true).

Enum

A named set of fixed values (e.g. EWeaponType: Pistol/Shotgun/Rifle). Pairs well with Switch on Enum.

Gate — open/close/toggle flow gate

Macro. Enter only passes through when gate is open.

FlipFlop — alternate between two execution paths

Macro from StandardMacros. Alternates A→B→A→B.

NOT Boolean — logical NOT (invert boolean)

OR Boolean — logical OR of two booleans

BooleanAND — logical AND

OR=BooleanOR, NOT=Not_PreBool, XOR=BooleanXOR