WasInputKeyJustPressed — true only on the frame the key was pressed

Button

A clickable UMG widget. Hook OnClicked in the Graph to handle the press.

Create a Blueprint for a simple elevator that moves between two floors when a button is pressed

Enhanced Input BindAction — bind an Input Action to a Blueprint function (UE5 new input)

UE5 Enhanced Input replaces legacy BindAxis/BindAction. In BP: use 'Enhanced Action Events' category nodes (IA_ nodes appear automatically). ETriggerEvent: Started (pressed), Triggered (held), Completed (released). Input Action outputs: 'Action Value' (InputActionValue struct) and typed output.

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).

AddImpulse — apply instant impulse to physics body

One-shot force. bVelChange=true treats Impulse as velocity change.

string

string

EnhancedInputAction — Enhanced Input system action event

K2Node_EnhancedInputAction. ActionValue type depends on InputAction (Bool, Float, Axis2D, Axis3D). Triggers: Started, Ongoing, Triggered, Completed, Canceled.

EventHit — fires when actor is hit by or hits something

Requires Simulation Generates Hit Events on physics body.

LaunchCharacter — apply a velocity impulse to a Character

bXYOverride/bZOverride: if true, replaces current velocity. If false, adds to it.