How To Open A Locked Door With A Key - Unreal Engine 4 Tutorial

Hey guys, in today's video, I'm going to be showing you how to open a locked door using a key. The door will be locked by default and you will need to pick up a key to open it. This will also include sound effects.
Key Model: www.cgtrader.com/free-3d-mode...
Locked Door SFX: freesound.org/people/Benjamin...
Key Pickup SFX: freesound.org/people/niamhd00...
#Ue4 #UnrealEngine4 #Ue4Tutorial
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00:00 - Intro
00:19 - Overview
00:39 - Creating The Door BP
10:30 - Creating The Key BP
14:21 - Final Overview
14:37 - Outro
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[@GlitchingColors]

Thank you so much i looked everywhere for a tutorial for a lockable door and now i found my favourite Ue4 Tutor!!! 🤩

[@PatrickTheDM]

Warning! if your character dies/respawns the key variable will reset to to false. Simply create the variable in Third Person Game Mode instead of Third Person Character to prevent this.

[@seanposkea]

I've done five or six other door tutorials and this is by far the simplest and cleanest way. Thank you.

[@TheLastEpiscopalian]

All your videos are insane. Best on youtube by far man.

[@mr.john.m.f.1323]

Your channel is awesome!!! You are the only KZbinr that I have watched that the Code actuly works every time!!!

[@Limey-pu3ms]

Fast paced, love it

[@alexjr977]

Great man ! Next video "how to randomly place objects like in many horror games " Thank you soo much for your time

[@athelstanm7298]

Thank You for this Great Tutorial!

[@Alex_Panagiotidis7]

exactly what i needed thank u!!!

[@justwill7467]

really helpful, thank you!

[@ChrisRed147]

thank you very much mate, great explanation

[@guerosoometv]

thank you man, you're amazing!

[@aleksboboychev]

Thank you!

[@MrsHorridVR]

i just wanted to thank you. im planning on making a horror game as my first release :D so thank you so much for making these tutorials theyre helping a lot

[@wawa_enjoyer]

Yoo same here dude

[@puri7597]

Thank you so mcuh fot the tutorial!

[@Mrkev217]

good idea as always matt

[@MattAspland]

Thanks so much man! :)

[@Stopmotioniscool]

Thank you this helped me

[@mrdragancrazy02]

Amazing Video Tnx Man :)

[@fosterboy1587]

thanks for this matt just what i was after cheers

[@MattAspland]

No worries man, always happy to help!

[@fosterboy1587]

@@MattAspland hi matt i have another issue woundering if you could help i have put stairs in my level and when you go up them it hovers up instead of walking up step by step is there a way to fix this

[@nofrillbear]

great tut just wondering how would you set it up so a message will display when it's locked and when you use the key the message goes away

[@ninyqin7086]

Hey man I tried this in the mobile mode, I can pick up the key but I can't open the door. I did about everything you did in the tutorial except for using cast to first person character and having separate names of collision for door and key. btw I'm clicking on the door in iOS mode, with mouse. I rlly appreciate your work and it would be so nice if you can help out.

[@MotivationMagicc]

Good Tutroial even works in Unreal Engine 5 Thanks :)

[@isolophobiaofficialgame]

It didnt work for me when i trigger r nothing happesn i even tried doing a print string and still wont trigger

[@abdullahsohail5395]

Nice video . I Appreciate it

[@MattAspland]

Thank you, glad I could help!

[@shallah3113]

Nice video! It's just a suggestion or question, i don't know, but can you make a video where you can lock the door by yourself and unlock it with widget? (the widget only shows when you looking at the door).

[@jas-jr3rv]

and how do i add a sound for when its opening? great tut by the way!

[@TheLastEpiscopalian]

From flipflop onward to open close door, can we compile that into one node so we just tell the flip flop to link to the ‘open/close door’ node? Or is that the definition of an interface? Instead of having to constantly write the open close door blue prints.

[@rat1n69]

THANKS VERY MUCHHH, i very happy! I can`t find a tutor for that, but u help me

[@fosterboy1587]

hi matt another question on this is there a way to add text on screen once you have picked it up saying you have the key

[@SafouaneAYADI]

thanks, bro

[@kummistudios8755]

LEGEND

[@luqmanhakeem6539]

interesting way of opening/closing door, most video i watch about door they dont use gate or lerp function. now i know, thanks 😊 edited: so this method doesn't use array system, what if you have a lot of looked room with different kind of keys? love your video tutorial.

[@MattAspland]

No problem, glad you know this way too! :) And you are very right yeah, you could use multiple Booleans, or follow a way I did for a keycard system, which is very similar. In that, I used arrays to have multiple doors and keycards :) Part 0: Overview: kzbin.info/www/bejne/hnjMkmmDiLCBkM0

[@artdrawing6682]

@@MattAspland my friend please i send you message in Instagram and the gate node not working for me i need your help please and thank so mush

[@Pezz323]

theoretically would i be able to combine this video with the randomized spawn video?

[@beastNick7713]

I remember my self 1 year ago that i didnt know how to do this and now i know about 10 more things about ue4

[@notadhdeveloper4994]

Is there a way to make the door lock if you have the key?

[@patrickmiller1723]

how do you change the pivot point of the door in the blueprint

[@GainsGuru761]

Hi Matt I was wondering how you could do this but once you use the key it gets destroyed and cant use it again. I would be greatly appreciated if you could help.

[@inheritorofthewilloffire2547]

Did anyone else have trouble with the key not working? The key just sits still for me in the environment and I'm unable to pick it up or interact with it. The door seems to work, I just can't open it since the key is not working for me. I'm using a cube static mesh as the static mesh for the key, could this have something to do with the issue I'm having?

[@inheritorofthewilloffire2547]

I will also mention that I am now testing it with the key model and it still is not working. The door has working colliders but the key does not seem to have any colliders at all and I cannot pick it up. It sits there in the environment and I can walk through it. I'm not certain if this is an issue with the static mesh or it has something to do with the blueprint.

[@xfedonaras]

@@inheritorofthewilloffire2547 im having the same issue did you find the solution?

[@beastNick7713]

Maybe the box collision is not big enough and if u interact with it and it doesnt disappear u have to put destroy actor and make sure that the variable that u have put is checked in the key blueprint

[@madar382]

Is this for multiplayer too?

[@surflexy]

so ive added a widget to notify on the player's screen that he doesnt have the key so he needs to find it however if i press down my interact key twice quickly, the widget will no longer get removed from the screen after the 2 seconds delay. any ideas on how to fix that? thanks

[@neutrino76]

Excuse me, how do you switch from third person view to first person view during play?

[@5qsgreatchannel]

the boolean variable doesnt come up when i use a "get" or "set" blueprint. It's set on the character. Any idea why this isn't working?

[@MattJSowards]

Hey matt will this show for other players if its multiplayer?

[@gevorggevorgyan8099]

Yes

[@Si-Toecutter]

lock pick tutorial would be epic

[@MattAspland]

Nice idea, I'll write it down!

[@meganbishop7652]

hi, i have a small issue when I'm animating the door, everything works fine until i attempt to open the door. its laying flat on the floor instead what do i do to fix this?

[@Alex00m]

Nice one bro,iam back again😊, ❤️❤️❤️❤️

[@MattAspland]

Thank you so much, good to have you back! :)

[@spellwhisperrr]

fallow exact for the variable info Get and Set

[@adrjen55]

Great tutorial! Can you made tutorial about AI hear player footstep?

[@MattAspland]

Thank you! I can definitely look into doing that yep :)

[@alexanderdimitrov7965]

+1 sub

[@sas-vo1cs]

First think you so much, second can you make a tutorial of how to make a car drift in ue4 because i searched in youtube but i didn't got any thing and sorry for my bad English

[@MattAspland]

Hey, no problem man, and I can definitely add it to my list yep :)

[@sas-vo1cs]

@@MattAspland thanks❤️

[@tombriader8389]

Nice man but when i dont have key i can walk through door can you tell me why ?

[@fernandosouza0308]

Hey man, ik the video is more than one year old but could you tell me how to set collision for the door? my character simply walks through it

[@stevieselva7124]

is there a way to make the key only work 1 time?

[@fosterboy1587]

hi matt just wondered how you add an unlock sound once you got the key and opened door

[@MattAspland]

Hey mate, out of the exit for the gate, you could get a "Sequence". Then 0 goes into the code we have now, and Then 1 goes into a DoOnce. Out of this DoOnce, get "Play Sound At Location", with the location as "Get Actor Location", and the SFX and the sound for unlocking the door. This means we can play a SFX for unlocking the door, only the first time we open it. So after we unlock it. Hope this helps :)

[@fosterboy1587]

@@MattAspland I will give that a go thanks matt

[@fosterboy1587]

@@MattAspland thanks that worked a treat much appreciated

[@MattAspland]

@@fosterboy1587 No problem mate :)

[@fosterboy1587]

@@MattAspland can you add text to the door and key so with door being locked it says door locked need a key

[@connorappleton1945]

My character can still walk through the door when I don't have the key, any solutions?

[@albinodino.stevied3976]

I'm using a top down blueprint and it doesn't seem to be working, the door has no collision and doesn't make a sound when I press E in the vicinity.

[@albinodino.stevied3976]

I should clarify, the door itself has no collision, i believe the box collision is working because when I shoot projectiles within the collision box they stay in place, however interacting with the door does nothing and I can walk right through it. Is this a topdown blueprint problem?

[@MattAspland]

Hi mate, if you are using the starter content door, then it will be a problem with that. For some reason, by default it has no collision. To fix it, you can open up the static mesh for the door, and change the "Collision Complexity" to "Use Complex Collision as Simple"

[@albinodino.stevied3976]

@@MattAspland THANK YOU

[@MattAspland]

@@albinodino.stevied3976 No problem :)

[@supperfprs5102]

how do i make so one key can only open one door like a blue key can only open a blue door not a red door

[@thejules.]

My door is just gone. Would anyone know why it’s not showing up? It’s in the blueprint viewport but doesn’t show up when I put it in my world

[@EerieRealms123]

Im making a game with several locked doors but i want each door to be opened with a different key each time but i dont know how to can someone tell me?

[@lokikennedy]

For some reason this method MAJORLY bugs out for me from test to test. I can get the door to open and close and all that if I remove the key requirement. It's clearly interactive... But whether or not the key will work or break my door is a total crapshoot. I've had it work. Hit stop, play and immediately it can't find the key. The blueprint claims it's Accessing None trying to read the SET HAS KEY node. No clue why it keeps crapping out.

[@molinarigamesltda2582]

Comecei a criar este mesmo sistema mas não estou tendo sucesso

[@glitchy489]

bro I can't connect the variable haskey to cast to third person character

[@ahggxb2285]

bro...do u know how to edit the pivot?

[@MattAspland]

Hey, there are a few different ways of doing it. Did you make the model yourself? If so, changing it in the model before exporting is the most efficient way of doing it. However, you can also try: "ALT + MiddleMouse" to move the pivot, then Right-click the actor and choose Pivot > Set as Pivot Offset to save. " Hope this helps :)

[@fuzzypanda1684]

So this works for me except the door won't close when I press the interact key again after it opens. I can't figure out why. I've tried putting the "B" output of the Flip Flop node into "Reverse" and "Reverse from End" but I can't get it to work. I even bypassed the check for the key so it just opens when you hit interact and once again it opens, but won't close. Does anyone know why? EDIT: I solved it in case anyone else has similar issues. After endless frustration I decided to look at the door blueprint while playing and noticed that everything was fine until I used the key to open the door. At that moment, the box collider disappeared. Then I noticed that I had the box collider attached to the door static mesh instead of the defaultrootscene. I uncoupled the box collider from the door mesh and now everything works perfectly.

[@musicdiary3789]

The door itself doesn't have collision so I can just walk thru it. How do I add collision to the door?

[@mihovilmikulec]

You need to set up door collision. Do what the guy in this video did: kzbin.info/www/bejne/p6uplWCGm7JoocU (starts at 5:40)

[@Splatoony_ahh_channel]

I followed every single one of your steps, the key gets destroyed but it doesn't open the door, what do I do?

[@user-ft2uq5yy5y]

why do i go through the door? even when its locked?

[@voyrex2675]

Hi i need help about 2d side scroller crouch animation i watched your video i did exactly what you did b ut animation wont work

[@MattAspland]

Hi, is this for my crouching video? If so, do the animations not work at all? Make sure you are setting and using the Boolean correctly. If you want, you can send screenshots of your code for me to take a look at.

[@voyrex2675]

@@MattAspland animations is not working i have custom character not using template character

[@MattAspland]

@@voyrex2675 Right okay, you will need to retarget the animations to your new skeleton then. I have a video on it here :) kzbin.info/www/bejne/nIa4lKGtn8Z8nbc

[@voyrex2675]

@@MattAspland i send you a video by mail

[@MattAspland]

@@voyrex2675 No worries, I've just replied :)

[@TraumniniumnGames]

I copied the same exact nodes and the time line is paused

[@imZANETTI]

it worked great but i had a problem.. when i get the key, and after that my artificial intelligence kills me, the key is no longer there and i cant open the door

[@happycakes8469]

When I import the key model, the key isnt there

[@MattAspland]

Hi, you might need to scale it up a lot before you can visually see it. Let me know if that works for you :)

[@murphy1934]

i cant pickup the key

[@aliahmedgaming6083]

💪 I want the floor creak because i am making horror game in unreal engine 4

[@MattAspland]

Great idea, I can add it to my list!

[@mhze]

I cant import sounds...:(

[@MattAspland]

Hey, make sure that your sound files are .wav 16 bit. You can use this free online converter to get them into that format :) Change the bit resolution to 16 bit. audio.online-convert.com/convert-to-wav

[@auragaming2776]

Door open but I can't go throw door.

[@MYMP22]

doesnt work and i literally doing all the same as you doing :(