Blueprint Interfaces | More Efficient Interactions | Interact Interface - Unreal Engine 4 Tutorial

[@MattAspland]

For anyone wanting to interact when overlapping, instead of looking at. This below code should work for you. Let me know if you want any further explanation :) imgur.com/a/Dq5biqK

[@karakamen]

I watched 10 interfaces explanation tutorials and yours was simple enough for the whole concept to click. Thanks

[@stormhooten9755]

This just helped me so much not for destroying the object, but taking the same principle and having an object transfer me to the new level. Thank you!

[@braxtonburks7108]

Stellar tutorial! Simple and to the point. I’ve been hearing that Casting is not ideal and I can see now why interfaces are awesome

[@geeksinsuits]

Best Intefaces explanation found on youtube ! Thank you buddy !

[@aerobiker8230]

Heyyy! Love how unreal has maaany ways to do different things. I just started learning and all I know was using collision boxes but this is great too! Thanks! Love your channel

[@MattAspland]

Hey man, yeah you'll always be finding new and better ways of doing things! Part of the reason I love it :) Thank you for your kind words too man, all the best to you! :)

[@static2601]

Thanks. Was banging my head for hours trying to figure out how to get the actor of a line trace so I can call a function of that actor. Problem is, unless you cast to a specific blueprint, you cant access its variables in game. Works great now, I need to learn more about interfaces, while ive done them in the past, I didnt know they could be used like this.

[@MiniSlac]

Literally was just looking for this type of video! Lol NOICE

[@MattAspland]

Ha great timing man :)

[@MiniSlac]

Yep!! :)

[@stevenwynn819]

Glad you made a video to cover this important topic since it can be confusing. You've cleared things up, as usual!

[@scc1940]

Thank you so much! I was learning how to communicate between blueprints with a linetrace and I couldn't get it to work until I saw this video.

[@Mj3DArts]

thank you so much for this one.. i wanted to shoot out lights with a linetrace and couldn't figure it out. this works perfectly like you say..

[@MattAspland]

That's great to hear bro, happy to help! :)

[@Mj3DArts]

@@MattAspland now i just need to be able to turn of the emissive material in the lightbulb.. do i need a parameter collection and a timeline to do it? is there a function or something else that would make that happen easier?

[@MattAspland]

@@Mj3DArts You could make the material a material instance, and have the emissive colour as a parameter. Then you can access and change that parameter via the instance at run time. I did something similar in this series, where I am changing the door colour at runtime based upon a value I set. I do this on the construction script, but you'd do it when you shoot out the lightbulb. I believe it is near the beginning. kzbin.info/www/bejne/hImsiqyMiqtnkJY

[@Mj3DArts]

@@MattAspland Yes Thank you again, it works like a charm..

[@MattAspland]

@@Mj3DArts Ah perfect, no problem bro! All the best to you :)

[@fleurbird]

Nice! This is something I don't know anything about.

[@MattAspland]

No problem Fleur, yeah it's simpler then people think, and it's way more efficient :)

[@BM_100]

Thank you very much Matt for your videos. Your videos always help me solve problems that I thought I couldn't solve.

[@nvermr]

Thank you, Matt. I'm always learning something new about unreal engine because of you!

[@Ghostreborn11]

thank you so much this was really useful, found what i was looking for all this time.

[@izzyharvin]

Is this also another way to interact with a picture where it plays a video for you? I'm assuming I have to put the video widget in the interface node at 8:36 in the video? I also look at your other videos to try to make it happen. Thank you for the help

[@abdullahsohail5395]

Nice video 😀

[@MattAspland]

Thanks a lot bro! :)

[@begolu9907]

Please make more ue4 tutorial, ur tutor simple n easy for learn. Thanks u

[@Georgooo]

Hi i aply this to ue5, but it´s not working, can you help me ?

[@ricardogoncalves7043]

Hi Matt Aspland. Please, would you like to help me with a difficult question here?... I did the crosshair that you did in your tutorial (Create An Interact Dot Crosshair - Unreal Engine 4_5 Tutorial). I would like to use just one button ( mouse or keyboard, really doesnt matter) to interact with every mesh that has interact implementation. How do i do that? For example, if i want to use the left mouse button to interact with a door or/and with a material changes or/and even call a variant manager and keep my dot crosshair like the one in your tutorial, how do i do that? Thanks again

[@C1ayz]

Hi how to make a box when you go on it it give you play a small box in the screen moving random item and the item it show you get

[@MattAspland]

Hey, I can look into that. You'd essentially want to create a widget, and create a sliding animation inside of it. Then set the image and text on that widget, to represent the item you just picked up.

[@C1ayz]

@@MattAspland thx

[@papasheev8924]

Does anyone know why Interact Message is not there for me and why I cant change its target from self?

[@preston748159263]

did u ever solve this one

[@sfm_pakic3527]

these is any tutorial on youtube to show how to change the crosshair when you look at a object that you can interract?

[@RozvozceTofu]

i tryed with replicated interact for playing and stopping Music in fps game, it works perfectly 😇

[@rekt4759]

Matt, i know this vid is old now but how would I use different functions in the same interface? so if I push E on this object - do this function but on that object - do that function. I see in the Line trace graph you need to specify the function there so how/where do I specify which func to implement on that graph? Hope i explained this correctly

[@justindeines6724]

How would one get this to work with your pickup/rotate item tutorial. I want to use this interface system with that. Not sure if that would remove all casting from your other video or not but I am curious.

[@toren4317]

Hi! If the first time the line hits the object and triggers the interaction, how do I stop it from triggering multiple times if I keep pressing the keyboard input? I want to pair this with a dialogue system and I think this might be a problem

[@SaynYT]

Thanks!!! I was using casting before and it was a total nightmare

[@radicalgamettv]

Is it possible to add a Flip Flop to the Interact interface to make it toggleable (on a per object basis, perhaps?) thanks in advance.

[@kyleholcombe]

Great tutorial-even in UE 5.2. Would you be able to show me a blueprint for how to display the "E" onscreen as well-on hover, before the object interaction (sort of like in your thumbnail)?

[@gamingtotdemaxi]

How would I go about detecting when I'm no longer interacting with said object when using a linetrace each frame?

[@dangancopa111]

is there a way to start a sequence player when you cast a ray to hit something, I want to look at a couch click "e" and then have the sequence play where the camera moves the actor on the couch

[@wolfiedgr8t]

Hi Matt, could you make a video showing other examples of using blueprint interfaces? I'm not 100% on how I could use them and are they better to use over cast to nodes?

[@atenmusic1027]

Hello, thank you for the rundown on this interface, it's awesome but I'm having some trouble with it. I'm trying to open a closet door with this blueprint but, this method doesn't allow the "Timeline" or "Move Component To" node to be called so, the door will just snap into place. How would you ease the door open?? Thank you again for all your help.

[@pupster8956]

You can create a custom event int the event graph and call the even within the function

[@atenmusic1027]

@@pupster8956 I tried that but it didn't work... sadly. I'm not sure how to work it.

[@wtwmikey]

what would the tpp interacting blueprints look like? im having troubles figuring this out.

[@freddywastaken9531]

How do you make a sound and a widget animation play when you pick the item up?

[@jp3d911]

hey Matt, thanks a lot for this clarification .. I have one question : what's the point of testing if an actor implement an interface prior to call a function through this interface since doing so on a actor that does not implement the interface doesn't return any error... ??

[@baddweather6362]

Any idea why this wouldnt work while your using the crouch funcitonality?

[@sunnymon1436]

Fun fact, interact does use casting, it just doesn't do it by you calling the cast node. I learned this from watching an unreal live demo.

[@KondixOfficial]

Hello! How to make a computer in ue4?

[@Emarketsarts]

Something i don't understand , if i add a function to the interface and add an input on it , i can create the input , but it will not let me name the input. It just keeps going back to " parameter " , no matter what i try to name it.

[@mr.zeping4800]

Hello Matt, so when my PC went boom boom I took a break from programming And the break is over 😀 I'm thinking of making a battle Royale! 😀

[@MattAspland]

Great to have you back! That sounds like a great idea too, that could be amazing :D

[@orccomputers2145]

can u make a video on making car parts interactable for machanical games? ty

[@teamnobz501]

Hi! i have a question i have a tree and i want to like destroy it but i dont have a event graph of the tree can you please help me with that?

[@alexjr977]

Thanks Matt :) , how many times do i say thank you lol

[@MattAspland]

Haha, more then enough. All the best to you man :)

[@akzork]

You can not add delay or timeline inside the interface functions, right?

[@SuperVillianStudios]

How does this work if you need to pass data between two actors? Like if you were to equip a weapon but you need to pass the socket, weapon mesh, and weapon type (struct) along the interface?

[@RapidRealityRJC]

Please, tell me how to make it when you hover over the object it shows a widget!.

[@mostafaeid2275]

what if i want to overlap box instead of line trace !!!!!!!!!!!!!!!!!!

[@frizar999]

lol, Event Begin Overlap -> call Interact function. It's just the same.

[@mostafaeid2275]

@@frizar999 sorry cuz my knowledge is very simple

[@frizar999]

@@mostafaeid2275 then learn basics (and most important - PRACTICE). you don't really need to use interfaces for now if you are at beginning. just do small things and use casting, it's ok. when you understand how it works then you can use more specific things like interfaces.

[@MattAspland]

Hey, what you could do is add a box collision on to the object blueprint. Then in your character blueprint, you can do the following code instead that I've just made. This will just see which objects you are overlapping, and then overlap with the first one it finds. Let me know if you want an extra explanation :) Code for interacting with overlapping items: imgur.com/a/pyrT7VA

[@MattAspland]

But yeah, for a more simple approach to interacting, you can use the following video which uses box collisions and casting :) kzbin.info/www/bejne/Y5emhmiOhs6tkKs

[@kuralluagondevelopment4829]

It did not work for me, I tried following this 4 times now and it had not worked, someone help

[@AlexanderThePerfect]

There is no "vecto x float" function. How fix?

[@mattix9795]

How would you do this with a timeline to make a door open?

[@root0062]

Any chance you could make a tutorial - Where you must pick up an object, and use that same object to interact with another object (say a button for example), which if done successfully by the player unlocks a door? I'm so close! Its just using the asset on another object to unlock a door is where I'm stuck :( I'd really appreciate it !!!

[@gamerdweebentertainment1616]

Comments saying good video... hmmm Okay, I'll stick around... LineTrace Interaction... expected something else, but this also good :) Was expecting more of a line like here's a door, here's an pick upable item, here's a pushable item and how interact with all of them differently while having one interaction interface. Then again should be self-explanatory already, if you know the basics. God tried so many tutorials by now, should be able to make somewhat a demo already. Should focus on that.

[@MattAspland]

Yeah this was more of a general video for using a blueprint interface. For opening doors, you should be able to do the same code from my previous videos, but start the interaction with this video, instead of the interaction in that one. So casting to, gates, action events. Just do it in the function :) I can give specific help if you'd like :) kzbin.info/aero/PLQN3U_-lMANNeRdjASe1vrm2WJ8X12oWP

[@CupCakeUnleashed]

The interact function is not firing at all. I dont know what's not working properly

[@rexx4K_]

Hi, I got a little problem am using the sphere collision method, on the actor being destroyed (The Pinned Comment One), but when I have multiple actors close together; when I press E it destroys only one.

[@Anonymous-mf8ip]

Hi, I am having a problem where I have a game which you need to press 6 buttons, everytime you press a button, it increments a variable inside of a different blueprint class but the cast doesn't seem to work. Do you have an idea of how I can increment a variable in a different class from a button class. Thanks in advance.

[@TheZoobZoobs]

Hello, I have used a number of your videos to resolve some serious issues my nodes had (god bless your soul for that) I was wondering, do you have a tutorial for resident evil or silent hill item pick up mechanics or something similar? I mean the function in those games which causes the item to appear in the screen as a large model or an image with a text prompt asking the player if they wish to pick it up. Sorry, I am not quite sure how I can search for that in terms wording.

[@MattAspland]

Hey mate, that's great to hear! And I don't have a video on it currently, but I know what you mean and I can add it to my list. You may want to look for an inspection system

[@TheZoobZoobs]

@@MattAspland Ah thank you very much!

[@zZzDarknezZz]

Followed exactly and cube doesn't delete. Not sure why.

[@Si-Toecutter]

Awesome 👍

[@MattAspland]

Thanks Simon! :)

[@mojiacademy9400]

tnx teacher for this helpfulll video Can you make video about reload with mag mesh I just serch the howl youtube and didnt found somting tnx alot

[@MattAspland]

Always a pleasure bro! And I can look into that one yeah :)

[@phantomgaming5199]

you are the BEST

[@TheGaminator800]

Can you do a generated room tutorial just like in SCP?

[@wolfiedgr8t]

Matt you beauty 👍

[@iaandrei]

Cheers!

[@MattAspland]

Always a pleasure bro!

[@juancharistheashawu]

No wonder u've had a lot of req about monetary support, it's bc u often make tutorials from viewers request. Oh what about you add "tutorial request in private" benefit on ur patreon membership so ur patreon via discord or something can request a tutorial and u give them the screenshot of the code/tutorial video/project file (according to the tier) Or "consultant" benefit so u can help ur discord members or patreons by giving some advice or simple code.

[@MattAspland]

Thanks man, and great idea! I can definitely look into it more :)

[@juancharistheashawu]

@@MattAspland just keep making tutorial from comment section too, that's one of the things that built ur channel.

[@MattAspland]

@@juancharistheashawu Yeah definitely cheers bro!

[@juancharistheashawu]

@@MattAspland tutorial suggestion: ai stops following you when you not only blocked by wall but also when you far enough from it.

[@MattAspland]

@@juancharistheashawu Great idea, I can add it to my list :)

[@ARANDOMOPENAIUSER]

7:00

[@Faizy_Writes]

First 🙂🖤

[@simbikgames6006]

You are gey

[@gebrailfodred6911]

You are nice

[@mintytavor8332]

Didn’t work

[@adamjensen253]

thank you so much this was really useful, found what i was looking for all this time.

[@ARANDOMOPENAIUSER]

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