OR Boolean — logical OR of two booleans

AND Boolean — logical AND of two booleans

BooleanAND — logical AND

OR=BooleanOR, NOT=Not_PreBool, XOR=BooleanXOR

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

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

Overlap

Two collision shapes occupying the same space without blocking. Use for triggers (volume, pickup).

string

string

Less (float) — A < B

Two Blueprints reference each other in a way that can't compile

Why: '{a}' includes '{b}' as a hard reference, AND '{b}' includes '{a}' as a hard reference. UE5 can't compile either one first without the other already being compiled. Fix: Break the cycle by making ONE side use a SOFT reference (TSoftObjectPtr). Pick the side that doesn't need {b} immediately at construction — change the variable type to 'Soft Object Reference' instead of 'Object Reference'. Use Load Asset to resolve it at runtime.

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.

Add_FloatFloat — add two floats

Pin names A, B, ReturnValue.