Pickup and collectible system with overlap trigger

Pattern: Pickup actor with SphereCollision(overlap), StaticMesh visual. OnComponentBeginOverlap → CastTo PlayerCharacter → Success: call AddScore/AddItem interface on player → PlaySoundAtLocation → SpawnEmitterAtLocation → DestroyActor(self). Set collision to OverlapOnlyPawn for performance.

Set (Collection)

An unordered collection with unique elements. (The Set node for writing variables is a separate concept — see the entry for 'Set'.)

Create a Blueprint Actor for a collectible coin that rotates, plays a sound, and adds score when picked up

GetOwner — get the actor that owns this actor

Possess — make a Controller possess a Pawn

string

string

CreateDynamicMaterialInstance — create a runtime-editable material copy

Must call this before SetScalarParameterValue/SetVectorParameterValue. Store the result in a variable for reuse.

CreateDynamicMaterialInstance — create runtime modifiable material

UPrimitiveComponent method. Store result in variable and reuse. Create once in BeginPlay.

GetController — get the Controller possessing this Pawn

Pure node. Cast to AIController or PlayerController. Returns null if not possessed.

Character

A Pawn pre-built for bipedal movement. Comes with a CharacterMovementComponent for walking/jumping/swimming.