Construction Script accessing data that's not ready yet

Why: Construction Script runs while the actor is being placed in the editor — before BeginPlay. Other actors in the world don't exist yet from this actor's perspective. Some self properties are also not yet initialized. Fix: Move the logic from Construction Script to Event BeginPlay. Construction Script should only set up THIS actor's components/properties, not query the world. If you need editor-time behavior, use the ifEditorOnly check + restricted property reads.

Trying to spawn an actor from Construction Script

Why: Construction Script runs in the editor before the world is fully loaded. Spawning actors here is unsupported because the receiving world might not exist yet. Fix: Move the Spawn Actor node from Construction Script to Event BeginPlay. BeginPlay runs at runtime when the world is ready and other actors can be spawned safely.

Construct Object From Class — create UObject in BP

Blueprint-exposed version of NewObject. Cast result to your specific class.

MakeVector — construct FVector from X Y Z

Make

Constructs a struct value from its individual fields (e.g. Make Vector from X/Y/Z, Make Transform).

MakeColor — construct FLinearColor from R G B A

Make HitResult — construct a HitResult struct manually

MakeVector2D — construct FVector2D from X Y

BuildString — build formatted string with prefix, suffix, and value

Also: BuildString_Int, BuildString_Name, BuildString_Vector, etc.

CreateDynamicMaterialInstance — create runtime modifiable material

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