Unreal Engine Blueprint Visual Scripting 4

Question 1

In Unreal Engine Blueprints, what is a 'Macro' and how does it differ from a function?

Accepted Answer

A Macro is a reusable graph that is inlined at every call site and can have multiple execution inputs/outputs, unlike functions

Answer

Macros are inlined graph templates that support multiple exec pins (useful for loops/branches) but cannot be overridden or called on other objects.

Question 2

What is the purpose of the 'Set Timer by Event' node in Blueprint?

Accepted Answer

Schedules a custom event to fire after a delay, with optional looping

Answer

'Set Timer by Event' binds a custom event delegate and fires it after the specified interval, optionally repeating.

Question 3

Which Blueprint node retrieves the player's Pawn from the world?

Accepted Answer

Get Player Character

Answer

'Get Player Character' returns the ACharacter-derived Pawn possessed by the specified player controller index.

Question 4

How do you call a function on every actor of a specific class currently in the level?

Accepted Answer

Use 'Get All Actors Of Class' then loop through the array calling the function on each

Answer

'Get All Actors Of Class' returns an array of all matching actors, which you then iterate with a For Each Loop to call functions on each.

Question 5

What does the 'Spawn Actor From Class' node require as a minimum valid input to succeed?

Accepted Answer

A valid Class reference and a collision response profile

Answer

At minimum, Spawn Actor From Class needs a non-null Actor class and a Spawn Transform defining position, rotation, and scale.

Unreal Engine Practice Test