What is a Macro? And what is a Blueprint Macro Library? | Unreal Engine 5 Tutorial

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In this video we take a look at what Macros are, what a Blueprint Macro Library is, how we can use them to our advantage, and why you should be using them in your projects.
Blueprint Macro Libraries allow you to re-use your handy Macros throughout your classes. No more need to write specific Macros on a per-class basis.
I also explain the differences between Macros and Functions, and what the Pros and Cons of each are.
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#unrealengine #macro #tutorial #blueprintmacrolibrary
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[@Kekdot]

Hey guys, 👨‍🏫 My Patreon link: www.patreon.com/kekdot Download Project Files | Premium Tutorials | Courses 💦 Get our Game on Steam | Kekdot Center: store.steampowered.com/app/1487180/Kekdot_Center/

[@34959]

so the game is a roblox obby? better be able to parkour into obama and get digested

[@MarekZeman91]

Few notes about macros: 1. You can use variables in macro, check the foreach. You can create it but you have to use it through directly connected nodes. 2. The reason macro can use Delay (asynchronous actions) is because the macro will be copied into your code. Functions are REUSABLE code that is created once per class/actor. Macro is duplicated and runs on main thread like your BeginPlay and so on. 3. Function has one return/result. Macro is just a wrapped code chunk so it can have multiple output nodes. It is literally just piece of your code hidden under a name.

[@polardevs8883]

This is such a great comment! I like to compare Macros to the "Collapse Nodes" graph box. It's basically a re-usable version of a Collapsed Graph. If you've ever tried to duplicate a Collapsed Graph to use it somewhere else in your BP, you could instead turn it into a Macro. The end result in the compiled/interpreted code is the same but you can update a Macro in one place, instead of needing to update several duplicated collapsed graphs.

[@arsen1156]

Macro has nothing to do about threads. It will run on the same thread that previous node runs on (i.e. one connected to input pin of our macro).

[@MarekZeman91]

@@arsen1156 Yeah, that is kinda what I meant. Not the main thread but the thread it was run from.

[@speedwaylabsdev]

Building an Unreal project is like building a house.

[@Kekdot]

Extremely true

[@Biboz0r]

By the time you get to a no return point, you regret your designs? Checks out

[@Kekdot]

Hahaha, You just got to carefully plan and at some point cut some ropes. But yeah, it can get complex at certain times :p

[@billupsti]

You’re doing daily vids now???? Let’s gooooo

[@Kekdot]

Yesss sirr

[@iblisellis7114]

The more I use Blueprints the easier C++ becomes for me, lol.

[@jcruz6888]

I think this is what I was looking for

[@first9279]

What happend to coinbattle?

[@Kekdot]

Haha funny that you still remember. Coinbattle was part of a startup company which unfortunatly closed during covid because of being unable to raise money for it. Since it's still owned by the startup we can't continue on it and it has since then been abandoned.