Select — choose value based on index or boolean

Pure node. Type-specific variants: SelectFloat, SelectInt, SelectVector, SelectObject, SelectString, SelectColor.

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

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

string

string

OR Boolean — logical OR of two booleans

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.

BooleanAND — logical AND

OR=BooleanOR, NOT=Not_PreBool, XOR=BooleanXOR

AND Boolean — logical AND of two booleans

Switch

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

Array: build dynamic list, iterate, find and remove items

ADD: Array Add (Target Array=MyArray, New Item=newElement). READ: Array Get (Target Array=MyArray, Index=i) → use 'Item' output. FIND: Array Contains (returns bool) or Array Find (returns index, -1 if not found). REMOVE by index: Array Remove (Target Array=MyArray, Index=i). REMOVE by value: Array Remove Item (Target Array=MyArray, Item=value). ITERATE: ForEachLoop(Array=MyArray) → 'Array Element' output is the current item. LENGTH: Array Length (returns int). Key: Array nodes operate on the array BY REFERENCE — always connect the array variable directly.

Branch — conditional if/else flow control