Unreal Engine 4 Tutorial - AI - Part 2 AI Perception

[@TyrelChambers]

Legend has it that the dummy A.I. is still running to random locations to this day.

[@gargrumel]

Thank you, this has been very informative and so easy to follow.

[@argmon9090]

😭

[@merronmist2368]

hope this series continues for a good while. Thought I'd pose my scenario here: My ai is a child of my main player character. I have 4 ai in the scene, all of which run randomly as expected. :) But when they view one another, canseeplayer will be turned true. To avoid this, I simply do a "isplayercontrolled" check/branch before moving to set the canseeplayer bool to equal successfullysensed.

[@Sarcantuna]

I have been trying to get Behavior Trees to work for months, this is the first series that I've been able to follow! Thank you!

[@lowpolyambitions5853]

Your Videos are like a TV show. Kills me when an episode ends and I can't wait for the next ;) Nice Job! Keep em comin'

[@commoncure3335]

i'm not even a game dev i just like to look at the node graphs

[@kilbyfilms8132]

one of the greatest UE4 tutorials i've EVER seen.

[@RyanLaley]

Thanks Kilby that means a lot!

[@kilbyfilms8132]

@@RyanLaley wow thanks! but i ran into a problem on part 3. when i just open the NPC in the ai folder to get to the graph editor, it just says "unrecognized tab" do you know how to fix that? or did i just mess up? i looked at the comments to see if anyone else had that problem, and i think i was the only one who did. if you could help me out or give me a tip, that would be great. i did just start yesterday though, so it's most likely on me. thanks. :)

[@RyanLaley]

(going from memory here so could be inaccurate) Up top is the windows menu option. Click on that and you should see something like reset tabs/windows or something. That will reset the windows to default settings. That may fix it

[@kilbyfilms8132]

@@RyanLaley thanks :D it worked! btw, while i was waiting for a response, i was just running around in what i had so far from your tutorials (i had fun) XD. thanks

[@luckyducky7819]

Thanks again for telling me about this series on reddit. I understand more of how to do dynamic AI, and I've subbed and rung the bell to wait for more episodes!

[@RyanLaley]

Thanks glad I could help. More coming every Thursday :)

[@DRAWKCABLLA]

@@RyanLaley unreal keeps fucking changing shit. 2:45 doesnt work

[@JamesGorman]

@@DRAWKCABLLA Hope you got this sorted but after I double checked everything then switched to 'Get Player Pawn' instead and it worked for me.

[@valiant7057]

Thanks for keeping the videos short and succinct. No fluff or setting up adjacencies that aren't core to the mechanic being taught

[@memmytv2637]

This series is literally saving my life in my course on Unreal Engine rn lmao

[@robertdavies5139]

Thanks Ryan. Very clear delivery. I was using pawn sensing based on sight and that was working well but doesn't give me the flexibility I wanted. Behaviour trees seem to be the way to go so, thanks to your videos, I'm happily building out my enemy BT's :)

[@joshc3802]

Very well made shows, thanks for the content it helps those of us that are strictly visual hands on learners.

[@kvtys]

this vid series is honestly a life saver, thank you

[@DannyshRosli]

Okay hey everyone , for the one that have issue where player doesnt chase you. First you need to debug whats the issue. Unconnect Random Location from behaviour tree. And just focus on chase player first. You need to be in debug mode so that you can see if the player is actually seeing you. If it the doesnt, it is likely is your pawn. My silly mistake was , i did not have a game mode in my map. So the AI cant really tell whos the pawn, even having a AI Perception Stimuli also it doesnt sense my Character. Hence fixing the AI cant see you. After having a gamemode, it can now SENSE you. Dont forget to change your pawn in gamemode options to your Player Character. Now if the AI sees you, but instead of running towards you, it runs away from you everytime it can see you. It is because, in your FindPlayerLocation task,you may have to remove Navigable Radius node, and just slot in Actor Location to the Value. Now it make more sense, instead of everytime the AI sees you, it literally runs to your location, ratther than run towards RandomDirection. Hope i make sense.

[@jasonelliott729]

Thanks! Mine wasn't working until I unplugged the random location. Thanks for saving me a lot of time because I'm new to Unreal.

[@SevenYearsGoodLuck]

I can't believe I am making a game. Thank you for enabling my dream game to come true. I am glad I subscribed.

[@bagsy4884]

Amazing as always

[@Eric_Malbos]

Works very well, thanks for this tutorial. The decorator Can't see Player is not compulsory, it will work as well even if there is just the decorator See Player.

[@wayatvideos2142]

You're good at getting to the point my friend, excellent

[@StewRatDev]

Hey, as a heads up if you went though this and your AI refuses to move/moves to the player once then nothing, check the node connected to root. It should be a SELECTOR, if it is a SEQUENCE you will get this bizarre behavior. This is because a selector stops when it hits a success, and a sequence stops if it hits a fail.

[@PiterTraceurFA]

God damn those behaviour trees, but I think I'm finally getting the hang of it

[@brianmartin4178]

I'm replicating this in C++ (I know, I'm mad but can't stand Blueprints). It didn't work - the AI wasn't following me even when it saw me because I'd not set "Observer Aborts" to "Both" on the decorators in the behaviour tree so the selector wasn't switching to the "Chase Player" sequence node. Maybe I missed it but can't see this being done in the video so this might be another difference between C++ and Blueprints (trust me, there's lots of differences). Anyway, good video that shows just how sophisticated the perception system and AI system in UE4 is.

[@blinkrogue1344]

im very new to all this c++ and blueprint stuff, but if im correct, blueprint is good for kinda prototyping a system, then refine the system with c++. But how is the behaviour tree? is that good enough to a point where i can only code my AI with the behaviour tree?

[@megtwin]

This is great, as I follow, I'm separating them between Animals and Humans. Thanks for providing these tutorials!

[@zigglyDev]

If you did everything and your Ai is not working then change "move to" to "directly move to". It worked for me.

[@megtwin]

To everyone who has had issues and expects the AI to follow you , he won't, this video just makes it move to the last location where you were. Do the next video in this series.

[@manideepadithya1120]

THIS IS THE BEST SERIES...THANK YOU VERY MUCH

[@jyashi1]

If any of you are having the problem where the AI just stands there watching you but does not RUN towards you / follow you, then make sure that the Vector blackboard key variable is public and also that in Decision tree the Vector is set to TargetLocation. That did it for me.

[@CrazyRabbit0228]

Also don't forget to set the Finish execute to true

[@magdalenaszulecka7969]

hey my enemy doest chase me I checked if the success box is ticked , is the radius is 100, that I used "vector" get and nothing happening any idea?

[@JoffreyRs]

Hey, did you figure out a solution for this?

[@magdalenaszulecka7969]

@@JoffreyRs I don't remember how but he did in the end or I found an clue how to fix that in next video part

[@GaryParkin]

It would be interesting if there was more then one npc and they could work together. I may try this after learning more. Thank you.

[@shubhamlal8188]

Well U can just create NPCs and in Class Defaults section just chuck in the NPC_AI in AI Controller Class....😊

[@Ertie]

Neatly explained. Thanks!

[@SpiritMagicka]

1:39 let's capitalize this because it's going to set me off... i LOL'd. much relate bro =]

[@Alaa_alshahed]

very helpfull and clear tutorial :)

[@HammerSlammers]

thanks for the videos somehow it still works even on UE5

[@alexpotts619]

Hey, I don't know if you still lurk on these older videos but I'm having a problem with the Cansee bool. The AI can perceive me but doesn't switch the bool despite that, using debug mode shows that i am visible but the Cansee bool doesn't switch Any Ideas?

[@pagoda_dimensionale9761]

same

[@megtwin]

same here, did you fix it?

[@alexpotts619]

@@megtwin Yes my problem was based around two things, firstly It needed to be within the controller class and secondly it needed to be cast to the third person character, hope this helps

[@megtwin]

@@alexpotts619 Its working after watching the beginning of the next video, lol! Thanks for responding.

[@JoffreyRs]

@@alexpotts619 Hi, When you say it has to be within the controller class what do you mean? Could you elaborate more?

[@sebastiendns1074]

I've been following your tutorials for a couple of weeks, it's great learning with you. Thx a lot. I added variables to my NPC and i want to transfer them to SightRadius and PeripheralVisionHalfAngleDegrees. I added a visual vision Cone to my NPC like in Desperados 3 (simpler though, for the moment) and want the detection to match it. i can't figure out how to cast the stimulus to AISense_Sight to set the value... Is this the wrong way to do it ?

[@DRAWKCABLLA]

same issue FUCK EPIC GAMES FOR CHANGING THE ENGINE

[@benjaminsiegel3865]

If you want to make it easier to see if he's going to chase you or not, increase his peripheral vision (which he shows at 8:35) to the max

[@tylerbaker2873]

Having a hard time getting the ai to follow me I’m not using the mannequin I’m using my own character which I gave stimuli and changed the cast to to the character I’m using I followed the video to the t but there is a mix up when not using mannequin. It keeps saying there’s is an issue with ai controller setting the value of the bool

[@JoffreyRs]

Hey, did you end up figuring out the solution for this?

[@tylerbaker2873]

@@JoffreyRs no I haven’t unfortunately

[@marlowes3413]

oof I think I did something wrong because it isn't working. Now my ai won't move at all.

[@Duckamoly]

I watch all your videos for a while but use them when i need them. It was working until I added the decorators and now it only does the random move to once? Please help if u do much appreciated. (sorry i set the wrong key *facepalm*)

[@XMan-lp9bb]

Is anyone got this massage ? Blueprint Runtime Error: "Accessed None trying to read property CallFunc_GetPlayerCharacter_ReturnValue". Blueprint: FindPlayerLocation Function: Execute Ubergraph Find Player Location Graph: EventGraph Node: Set Blackboard Value as Vector

[@dmitriypotapoff7115]

As mentioned in other comment, if you use MotionControllerPawn (VR), just use Get Player Pawn instead of GetPlayerCharacter

[@craigbrown5879]

Hi, I've followed this tutorial series and absolutely love it however I seem to have an issue where the AI can see the player once they enter a nav mesh. Even if the sight radius is small they can still see exactly where the person is and I just have no idea what the solution could be. Any help would be fantastic!

[@FreakSheepVODS]

Change the PeriphalVisionHalfAngleDegree on in the AiPerception in the AI controller from 90 to a normal eye sight of 45 this shut help with youre problem 90 means he hase a 90deg angle on sight

[@ATP2555ify]

My guy is not following. I did everything you did and he still runs around. He sometimes turns to look at me when I run up in his face but goes back to running around.

[@megtwin]

Same here, I'm using v23, what version are you using and did you fix it?

[@NunWithaSpudSpun]

If he looks at you, you most likely have an error with acceptance radius or target radius. So the AI will turn to you, but think he's already at you and achieved his goal

[@Xavid-yj3hk]

@@NunWithaSpudSpun how can i fix this?

[@GaryParkin]

@@Xavid-yj3hk Did you remember to Check the Success box on the Finish Execute in the FindPlayerLocation BP? That's what my issue was.

[@beastmodejelly8654]

the first time that i tried i had the same problem,now i re-did the process and made sure to drag Vector as (get) not as (set) "i think that this is how i messed it up the first time",second..i made sure to save in both "behavior tree" and in "blackboard",and compiled all the time,now the AI is chasing me like an animal lol

[@raziela6904]

2:19 Have my AI set to walk to an object instead of to a player, tried using the "GetActorLocation" and had an object reference in place. Kept getting errors and whatnot, so just wondering how to get it to walk to the instance of the object it saw. Cheers

[@mahad-3443]

I followed this Guide step by step, but my AI is dont chasing me. I think it has to do with the fact that I already have a larger map, but i dont get it can someone give me a advice?

[@JDKDKDLDKDKDKDKKKDERYY]

have you expanded the object which is saying the AI where it can go? Anyway, one year... i dont think you'll need any advice anymore, do you?

[@bazinga7994]

Great tutorial mate. Got a Sub from me. But i got one problem. The ai does follow the UE Mannequin Blueprint , but not my selfmade Charater Blueprint. Any suggestions?

[@tylerbaker2873]

I need this answer as well using a fpc from the horror engine set it up the way I would for the first person character but not a damn tging

[@AT-jg2jj]

Hi, did everything like you said, but it seems the NPC can't perceive the player, I can't see AI debug while ingame (as I don't know where the apostrophe key is on an azerty keyboard, tried the # key on left (like to show console in a game) but it does not work. Anyway, while in game, if I look at the beehavior tree, it seems that the NPC can't see the player, it refuses to engage the "Chase Player" sequence. Tried three times already, i'm on UE 4.22, is your method still up to date ? The AI stiluli is correctly set too on my main character so I have no idea why it does not work. I made a test by disconnecting the random location sequence and the NPC goes to a certain point and then not move anymore. Also, during this test if I get in front of the NPC it turns immediatly and continue his road to another unknow point. Very strange EDIT : I've succeded to change the key for the debug AI, so now what I can see is that when I'm in front of the NPC, the CanSeePlayer becomes true but for some reason the chase sequence does not engage still, the NPC continues on the Find Random Loc sequence

[@IvanSorce]

did you find a solution?

[@WolframSaga]

@@IvanSorce GetPlayerPawn worked for me instead of GetPlayerController in the FindPlayerLocation BP.

[@6FingerGames]

You are the best!!! Thanks.

[@Mr.Biegel]

again... Love you man

[@fish3010]

Thanks mate! This helps a lot

[@deadgamesdeadman]

omg this is the third time watching this video and I was here for 12:11

[@bertani6134]

Amazing

[@conorlowe5514]

Hi, really enjoy the videos, they're incredibly useful. I seem to be having an issue however when I try to recreate this for my 1st person game. The AI run around randomly but don't seem to be able to see or follow the player.

[@fragelius]

problem is probably that you are casting to third person character in your case you need to cast into first person character... I had same problem but I have top down character :)

[@FF-FAN9999]

seems like on 4.27 the on target perception info updated node doesnt have the actor output anymore. any clue on how to fix this?

[@felicebagnulo3618]

Hi, I noticed that between the first video and the second, it is not shown in the creation of the SelfActor variable on the blackboard, by chance it is not used or is it necessary?

[@megtwin]

@Thefan Go into your char BP and turn him 90 degrees to face forward

[@SPSSkals]

Thank you for the video.

[@TheRedflash777]

What I've noticed, you don't have to mandatory add stimuli source to player character, AI sees him in any case.

[@Jackinyourbox]

This doesnt work on my version, the NPC will rotate on the spot, but does not physically move at all. I rotated the mesh as other users suggested, deleted the nav mesh and the recast nav mesh then created a new nav mesh which generates a new recast mesh. Still nothing. I even deleted my project and restarted it from scratch with the same result. Any thoughts?

[@MrBobrossftw]

I took "findRandomlocationinnavmesh" out of the find player location task and it made it stop dub-stepping at me if I stopped. I was worried it would make it too accurate but you can still lose them if need be. Perfect for Zombies.

[@lokergames7058]

Thank all work one question two people talking?

[@madridfan9946]

Is there a way to get the NPC to see an object (ball, etc) and move towards that when saw rather than the Playable Character?

[@vegitoblue2187]

you do not need to add a stimuli source as all pawns are registered as stimuli source by default

[@nklz7005]

At 3:02 , should I higher the radius if I have a bigger map?

[@RyanLaley]

All depend on how far you want your AI to sense the player

[@nklz7005]

Yeah I tried a a pretty high value but then he just randomly roamed around instead

[@danielpower5713]

if anyone can't seem to get the npc to follow you correctly check to make sure it's the player character not player controller getting the actor location on find player location. Took me a while to figure that one out >.

[@wei8856]

How can I transform player controller to player character,I guess it's the problem that my AI can't follow my MotionControllerPawn in VR template.Please help me

[@danielpower5713]

@@wei8856Hope, I'm not too late.. but I'm not sure what you're trying to do. What I did first was I used the player controller to get the players location but later on, I figured out he was using player character so I just used the player character instead and the npc followed me. Hope that helps..

[@theawesomegoldfish9567]

I have a strange problem, not sure if it's a misstep on my part but at 8:18 when you select the senses config, I click on "AI Sight config" and it remains at "none" the weirder part is that I have the option to compile as if I changed something, yet I'm not able to add the sense and the drop down for it never appears. Any help would be appreciated thank you!

[@leegami3234]

Same problem...

[@leegami3234]

If you still having this problem, try removing the AIPerception component and create another one, and DON'T change its original name. Strangely it works for me...

[@Struggles_yt]

hey could this be packaged up and used modular throughout different projects or would i have to kind of change things around or reset values? obviously i would need to create a navmesh but just wondering if its plug and play, watched all videos thank you man

[@maui-studios]

Hey bud, are you able to swap out a Player Character for VR eg HMD or VR Motion Controller Pawn? So that the NPC AI is chasing the VR user?

[@Leegf]

There's no need add ai stimuli source to player, ai perception automatically perceps pawns

[@RyanLaley]

Funnily I noticed this two nights ago :)

[@adeptguy1634]

Hi Ryan , i need some help ony my project, i need the player to get closer to charcter, and then he punches him if character moves he should move towards him, do you have any idea or can make a video on this, would be helpful,

[@skilatgamedev3353]

Heloo there, I'm sure that you know more than me but I was just wondering why it was better to use the "Ai perception" rather than the "PawnSensing" that looks more simple to use eventually. I have also made an "ai move to" to follow me to "success" but I find it unfortunate that the enemy does not follow me at the moment when he sees me but when he has finish the execute only

[@MatterOfFire]

It's probably going to be a late answer, but still: pawnsensing is sort of a legacy at this point, and unreal devs suggest using ai perception, as it is more effective resource-wise at doing the same tasks

[@clebo99]

Do you have a video that goes over how you would do more specific kinds of movement actions? For example, I want to be able to say have my player walk to a location on the map and at that point, an NPC will walk over to my character (think of it like a waiter coming over to a table where the people just sat down). Do you have a video for that or could you do something like that? And I don't mean necessarily a cinematic/cutscene. This would be in-game. Really love the videos. Great stuff as always.

[@aaronh248]

That sounds like a basic trigger activated event. So put down like a box trigger ( box collision ) that will reference the NPC, and look for the player to walk into it, and then activate the A.I of that NPC through the reference. That is my guess and sounds about right. I'm still fairly new to all this

[@migueldomingos4570]

At 7:27 you say that sequences execute all of them regardless ifthey fail or not, but they stop executing if one of them fails, right?

[@TylerSerino]

So something I've noticed is based on the way you have it set up in this video, even without the perception source in the main character, the ai still chases me.

[@Kunaj_8]

A quick question. I've already made an AI system for a follower npc and an enemy npc. The follower npc can roam freely, stop movement or follow the player by command. The enemy chases the player when the player is in range. All the code is done inside the character blueprints. Should I just scrap all the code I have made already and use this method instead? This seems way more complex. Will this be more efficient method in the end?

[@chinuonchaitanya8340]

Is there a way to cast to multiple character..isntead of third person character...i have a character selection screen ....so i have multiple character blueprints classes

[@2hawks125]

Hi Ryan, Great vids. How does one make the AI Character chase and-or interact with another instance of the AI Character? If, for example, I place 2 copies of the NPC_AI character into the world I can get them to perceive each other by adding AIPerception and AIPerceptionStimuliSource to the NPC_AI file. But when it comes to chasing (finding the location to move to of the other AI) I am unable to figure out how to do that. GetPlayerCharacter seems to just get the location of the human controlled player. Anyone point me in the right direction?

[@RyanLaley]

You want to get a reference to the instance you wish it to chase (could be nearest one eg.) Then with that reference saved as a variable (called target or something) this can then be fed to the blackboard and stored there

[@2hawks125]

@@RyanLaley Thanks Ryan! I know this is noob-ish of me, but how do I get a reference to the instance. In this video, when following player with the ChasePlayer event graph, we use Get Player Character -> GetActorLocation (etc). I really have looked all over the place to see if I could find this listed somewhere but it seems to be hiding from me. All that said, you are making great vids and I hope you make them for a long time to come.

[@RyanLaley]

Thanks man. It's not a noonish question at all. There are many ways to get a reference. For example Get all actors of class and choose one randomly, or sort them into nearest first. Either way, you will get one out of the array and then you promote that to a variable

[@okanerenli]

I'm always been in to blackboard stuff. Problem is I'm using this and more complicated techniques in Parent AI Class. What is the benefits of this. I read Blackboard is good at for multiple AI management, more like a commander. Is still feels like making a function library for AI and trigger event command system is looks easier for me.

[@arnoldvld]

Something with UE5 makes it that i can't find the Add Event For AIPerception as seen at 10:29..... what changed?!?!?!

[@fairy-killer7222]

Did you ever find out why ? Same thing for mw

[@salimf6041]

thanks , god bless you❤

[@YoutubeAccountMan]

How would the task at 2:30 change if there are multiple players?

[@aidanbobhog6303]

2:19 I have a question, so Instead of an npc chasing a player, I want it to chase another npc. Infact, I want it to be every npc for themselves. And everything else I got to work except for what you place right here. I can't find the NPC alternative to this "get player location" node. What should I do?

[@typicalretard6968]

maybe cast it to the npc class and get the actor location from there?

[@Shumaro-dy5xn]

I want to create a Stealth game, so the idea is that you can hide in a shadow (bp actor), how can I disable the pawn sensing?, you make a cast to the player, so you shouldn't just disable the AIPerceptionStimuliSource

[@Drewppp]

Any idea why my NPC runs forward but is looking 45 degrees to the right? I turned off Yaw and tried both Use Controller Desired Rotation and Orient Rotation to Movement and he still runs straight but does not look the way he is running...

[@defiant4eva]

Your NPC mesh is set at the wrong facing angle. Go into your NPC Character>Viewport>Mesh (characterMesh0) (Inheretred) and rotate it 90degrees in the view you need. Compile and run the game to see if it is correct, rotate again if it isn't or until you get the right forward direction

[@vegitoblue2187]

I'm tring to make a visual of the line of sight for the characters which i could change procedurally to make it easier for the player to avoid them. Any ideas how I could do this??

[@jameskoss]

It seems like a bad idea to reference the key by a static name. Isn't there some way to get the key name by reference from the blackboard? (Set Value as Bool -> Make Literal Name)

[@XMan-lp9bb]

I tried GetPlayerCharacter many times . but Runtime Error Massage "Accessed None trying to read property CallFunc_GetPlayerCharacter_ReturnValue" always . So Version4.23 is not support it

[@chemistchemist228]

@Ryan Laley! Your tutorials are very good but can you make them in 4k resolution or increase the video quality because all videos are not crispy sharp instead the text are blurred and there is a lot of details that people like Me and other with poor sight cannot see and missing them even on my 28" inch Full Hd monitor. It is just my suggestion - it does not cost a lot to add for tutorials higher resolution. Kind Regards!

[@RevolutionaryWillRegan]

I am having trouble changing from default 3rd person character and getting the NPC to still recognize my character. Is there anything I must do other than add a stimulus perception, add the drop down sight into its array, and check the auto register as source at start box?

[@RevolutionaryWillRegan]

Ok, figured this out. If anyone gets stumped on this - look in your NPC AI graph and find the flow chart element that says "cast to 3rd person character, " delete it and replace with a new element called "cast to " Mine was a paragon character class - predefined. It worked.

[@deltaghostprofessionalgame875]

where do you set " bSeePlayer" to false, so it stops following you ?

[@jcapo1803]

I'm having an issue with animations not working. My AI just slides in the idle animation when walking around

[@nasaeyong]

I have just encountered the same thing and spent a couple hours debug it, if your are using Unreal default animation blueprint try to disconnect the logic that checks for character acceleration in the event graph. For some reason the AI move to doesn't seem to add acceleration to the character hence the "Should Move" variable is never set to true in the ABP.

[@jcapo1803]

@@nasaeyong thanks, I have since figured things out, but still appreciate the response. My issue was that I was using a Paragon asset, and what you said was right. It would only detect input by a player controller so I just had to swap a node or two. :)

[@Moodydata]

Hi Ryan, just wondering is it possible to do something like "Can see player" for pawn sensing? I just feel more comfortable using that.

[@Need2pee]

Hey , maybe you could do that as well only that should be done in your enemy class I don't think you can do that in your AI controller rest all should be the same (try it out and let me know if it works) 👍🏻

[@gothbrickwomen]

OMGGG THANK YOU SOO MUCCCHH!!!! i was hoping you would do this!

[@gamerdweebentertainment1616]

You can use behaviour tree in player character, yes?

[@lewaplay]

WTF IS FundPlayerLocation? In which video do you wrote it?

[@MARCOAURELI0]

Hi, when the character gets a new random point before start his movement he rotate quickly in the direction of the new point .How can i get a smoothing rotation of character?

[@RyanLaley]

In the character movement component there is a setting for rotation rate. Turn it down.

[@sandy1234378]

Why is the AI character getting repelled by my TP character? The moment it looks at me, it turns sideways to face another direction and runs to a random location in that direction. EVERYTIME.

[@pumancz]

Hi, I have an issue. when the character sees me, it just stands on the place.

[@itsmorlok]

Make sure to set success on the finish execute node to true inside all of the tasks.

[@StewRatDev]

also make sure you have a selector node on root, i had a sequence and it was causing a similar issue.

[@patrickjesseman354]

Great as usual, look for me on Patreon I'll be on there! It's a no brainer!

[@seatony9917]

Why add AIPerception component to the controller not to character self? How to show debug draw like PawnSensing component?

[@RyanLaley]

You are able to give the same AI controller to multiple pawns. So you create one AI 'brain' and give it to multiple different characters. Debug is shown by pressing the apostrophe key and using the number pad to turn off/on views.

[@desanta4835]

IF NPC DOESN'T CHASE YOU: go to Blackboard - CanSeePlayer - MoveTo and increase Acceptable Radius

[@jey8446]

you didn t explain the SetActor key and how we do that

[@RyanLaley]

Where abouts in the video are you referring to?

[@jey8446]

@@RyanLaley 1:01

[@jey8446]

keys

[@jey8446]

@@RyanLaley because i think it s the thing i d ont have and thx for the answer😉

[@RyanLaley]

That says 'SelfActor' and it is there by default by the behaviour tree. It is simply a reference to the actor this tree is running on.

[@vegitoblue2187]

12:01 wont it be cleaner to do with a service on blackboard?

[@Levelworm]

Thanks for the tutorial. At 11:20 it seems that I do not have the Cast to Third/FirstPersonCharacter options, do you know what could be problem? Thanks in advance.

[@RyanLaley]

It will be "cast to (whatever your character actor is called)"

[@poshy221]

Sorry for a dumb question. I made a NPC for my enemies, now when I cast to do I cast to the NPC or do I cast to My character?

[@megtwin]

@@poshy221 Cast to your Player Character

[@GrounddevLF]

so i had this working but when i went back to the project the tree wont fire anymore anyone have any ideas?