#gameplay-ai | Unreal Source | Page 113

lyric flint Jul 7, 2019, 2:21 PM

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Can I adjust the eye thing manually @pine steeple ?

pine steeple Jul 7, 2019, 2:22 PM

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so its kinda tricky

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i dont see any BP exposed way to do it

lyric flint Jul 7, 2019, 2:23 PM

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Well is there a way to make your model detect you instead of seeing you?

pine steeple Jul 7, 2019, 2:23 PM

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{
    const AActor* OwnerActor = Cast<AActor>(GetOuter());
    if (OwnerActor != nullptr)
    {
        FRotator ViewRotation(ForceInitToZero);
        OwnerActor->GetActorEyesViewPoint(Location, ViewRotation);
        Direction = ViewRotation.Vector();
    }
}```

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that is how it gets the location and direction the pawn is looking

lyric flint Jul 7, 2019, 2:24 PM

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I don't use c++

pine steeple Jul 7, 2019, 2:24 PM

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and

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void AActor::GetActorEyesViewPoint( FVector& OutLocation, FRotator& OutRotation ) const
{
OutLocation = GetActorLocation();
OutRotation = GetActorRotation();
}

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so basically, on a basic actor

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it returns location/rotation

lyric flint Jul 7, 2019, 2:24 PM

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How would I do on a BP?

pine steeple Jul 7, 2019, 2:25 PM

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is it a pawn?

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i assume so

lyric flint Jul 7, 2019, 2:25 PM

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Yes

pine steeple Jul 7, 2019, 2:25 PM

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so

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{
    return GetActorLocation() + FVector(0.f,0.f,BaseEyeHeight);
}```

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this gets called

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from a deep chain of stuff

lyric flint Jul 7, 2019, 2:25 PM

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Again

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Dont

pine steeple Jul 7, 2019, 2:25 PM

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meaning you need to adjust the BaseEyeHeight

lyric flint Jul 7, 2019, 2:25 PM

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Use

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C++

pine steeple Jul 7, 2019, 2:26 PM

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which is an exposed variable

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    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Camera)
    float BaseEyeHeight;```

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so in your Pawn class

lyric flint Jul 7, 2019, 2:26 PM

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Ok I'm done

pine steeple Jul 7, 2019, 2:26 PM

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you need to adjust BaseEyeHeight

lyric flint Jul 7, 2019, 2:26 PM

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You wont listen goodbye

pine steeple Jul 7, 2019, 2:26 PM

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that is the height at which the pawn can see

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:/

shrewd swan Jul 7, 2019, 2:26 PM

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He's telling you why it works

lyric flint Jul 7, 2019, 2:27 PM

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Oh

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I thought he was telling me to use c++

pine steeple Jul 7, 2019, 2:27 PM

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so adjust BaseEyeHeight;#

lyric flint Jul 7, 2019, 2:27 PM

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Continue

pine steeple Jul 7, 2019, 2:27 PM

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on you pawn

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that is the Z location of your pawns "eyes"

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http://www.interkaos.com/grabs/UE4Editor-Win64-DebugGame_S1qsuiAZFv.png

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it defaults to 64

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http://www.interkaos.com/grabs/UE4Editor-Win64-DebugGame_G3OcshH4No.png

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this is the default eye height of 64

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http://www.interkaos.com/grabs/UE4Editor-Win64-DebugGame_4gba6p2jgc.png

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you can debug using this

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on your pawn

cursive vector Jul 7, 2019, 3:25 PM

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anyone know keywords i could google or tutorials or examples for techniques for having lots of pedestrians/crowds walking around in a world efficiently?

pine steeple Jul 7, 2019, 3:35 PM

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crowd following and animation sharing

cursive vector Jul 7, 2019, 4:41 PM

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thanks @pine steeple

stark zealot Jul 8, 2019, 12:38 AM

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Is there a simple way to make an enemy zombie climb a wall? Nothing fancy I just need them to slowly accend to the roof then keep chasing player

azure cliff Jul 8, 2019, 6:26 AM

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Hey guys, can anyone explain whats search start in service?

slow bobcat Jul 8, 2019, 9:43 AM

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Question about Perception System:
I'm having trouble understanding when does the "Aging" of the perceived actor triggers.
I see there's a timer that runs the aging process, but I can't see the exact moment that aging is actually valid.

This is what happens:

Enemy chases the player
The player goes around a corner
Enemy can see the player, aging of the stimulus starts
After N seconds (depends on the Max Age in the sight sense config) of not seeing the player, sense marks it as Expired.

All I'm trying to do is to get the exact moment where 3 happens. Maybe a callback, maybe a check I can do somewhere.

Any suggestions?

This is where the Timer is set in void UAIPerceptionSystem::StartPlay()

UWorld* World = GetWorld();
if (World)
{
    World->GetTimerManager().SetTimer(AgeStimuliTimerHandle, this, &UAIPerceptionSystem::AgeStimuli, PerceptionAgingRate, /*inbLoop=*/true);
}

And the function itself, which runs constantly

void UAIPerceptionSystem::AgeStimuli()
{
    // age all stimuli in all listeners by PerceptionAgingRate
    const float ConstPerceptionAgingRate = PerceptionAgingRate;

    for (AIPerception::FListenerMap::TIterator ListenerIt(ListenerContainer); ListenerIt; ++ListenerIt)
    {
        FPerceptionListener& Listener = ListenerIt->Value;
        if (Listener.Listener.IsValid())
        {
            // AgeStimuli will return true if this listener requires an update after stimuli aging
            if (Listener.Listener->AgeStimuli(ConstPerceptionAgingRate))
            {
                Listener.MarkForStimulusProcessing();
                bSomeListenersNeedUpdateDueToStimuliAging = true;
            }
        }
    }
}

lyric flint Jul 8, 2019, 9:46 AM

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How can I change the eye height for ai perception? Can I change eye width? Like how apart they are?

slow bobcat Jul 8, 2019, 9:48 AM

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@lyric flint you have different ways but, the easiest, is to attach the Perception Component to the Head bone (or any other bone you might have at eyes height in your skeletal mesh)

lyric flint Jul 8, 2019, 9:49 AM

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I dont really have eye meshes but an eye texture @slow bobcat

slow bobcat Jul 8, 2019, 9:49 AM

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https://www.youtube.com/watch?v=MBEnZfErPcw

YouTube

Kaylee Urwin

Attach AI Perception To A Characters Head Socket in UE4 : Tutorial

This tutorial shows you the necessary steps to attach an AI perception component to the head socket/bone of a character (rather than conventionally attaching...

▶ Play video

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is this in a character? do you have an skeletal mesh in the character?

lyric flint Jul 8, 2019, 9:50 AM

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No do I need one?

slow bobcat Jul 8, 2019, 9:50 AM

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if you don't have an skeleton mesh in your actor, you can always have a Scene Component and attach the Perception Component to it

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No do I need one?
Well, unless it's an actor with animations etc, no, you don't

lyric flint Jul 8, 2019, 9:51 AM

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That eorks?

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Works*

slow bobcat Jul 8, 2019, 9:53 AM

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No, you're right. The Perception Component is an Actor component. Sorry, my mistake.

lyric flint Jul 8, 2019, 9:54 AM

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?

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So it wont work

slow bobcat Jul 8, 2019, 9:55 AM

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ok, there's a much easier way
https://answers.unrealengine.com/questions/780021/how-to-set-the-ai-perception-eyes-location.html?sort=oldest

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you just need to override GetActorEyesViewPoint

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Option A) Attach it to a socket (requires skeletal mesh)
Option B) Override GetActorEyesViewPoint

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Any of those will work

lyric flint Jul 8, 2019, 9:56 AM

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Ok question

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How do I make cpp class work?

slow bobcat Jul 8, 2019, 9:58 AM

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That's a question for a different forum I'm afraid.
You can start here: https://www.youtube.com/watch?v=EIBWsvSNRQs

YouTube

Jayanam

UE4 C++ beginner tutorial

This is an Unreal engine 4 (UE4) beginner tutorial for programming with C++ with UE4 and Visual Studio 2015. I show the basic concepts by example and I creat...

▶ Play video

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ok... I just found the answer to my question... turns out that ProcessStimuli() runs on tick and overrides the age when refreshing the stimulus. When the stimulus WasSuccessfullySensed() == false, the refresh doesn't trigger so the aging actually accumulates.
I wasn't expecting this to be "detect - refresh/override - age" on tick.

void UAIPerceptionComponent::RefreshStimulus(FAIStimulus& StimulusStore, const FAIStimulus& NewStimulus)
{
    // if new stimulus is younger or stronger
    // note that stimulus Age depends on PerceptionSystem::PerceptionAgingRate. It's possible that 
    // both already stored and the new stimulus have Age of 0, but stored stimulus' acctual age is in [0, PerceptionSystem::PerceptionAgingRate)
    if (NewStimulus.GetAge() <= StimulusStore.GetAge() || StimulusStore.Strength < NewStimulus.Strength)
    {
        StimulusStore = NewStimulus;
        // update stimulus 
    }
}

pine steeple Jul 8, 2019, 12:55 PM

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@lyric flint i already told you how to change the eye height

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you need to change the BaseEyeHeight on your pawn!

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if you actually read what i wrote the other day instead of being ignorant and not listen to me

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eyes is just a single point

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its not 2 eyes

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its just a point to do a line trace from

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which is normally middle of you pawn at the eye level

slow bobcat Jul 8, 2019, 12:57 PM

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📎 unknown.png

pine steeple Jul 8, 2019, 12:57 PM

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and you can't attach the perception component to any bone

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its not a scene component

slow bobcat Jul 8, 2019, 12:57 PM

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yep. I didn't know that was exposed. Barely use BP's if I can avoid

pine steeple Jul 8, 2019, 12:57 PM

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and it should be on the AI controller

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so how can you attach it to a bone?

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honestly i think sometimes i talk to myself 😄

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the perception system is a bit hmm garbage tbh

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i mean it works

slow bobcat Jul 8, 2019, 1:02 PM

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You can't and you're right about it.
What I meant is to "grab a bone location socket and use it in GetActorEyerViewPoint", which is what the video does. I misused the word Attach in this case
https://www.youtube.com/watch?v=MBEnZfErPcw

YouTube

Kaylee Urwin

Attach AI Perception To A Characters Head Socket in UE4 : Tutorial

This tutorial shows you the necessary steps to attach an AI perception component to the head socket/bone of a character (rather than conventionally attaching...

▶ Play video

pine steeple Jul 8, 2019, 1:02 PM

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ah

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that makes more sense 😄

slow bobcat Jul 8, 2019, 1:03 PM

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I should have clarify. Also: morning tea before jumping here would be a followed up rule for me from now on XD

pine steeple Jul 8, 2019, 1:03 PM

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but the baseeyeheight does that for you

slow bobcat Jul 8, 2019, 1:03 PM

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yeah, I can SEE that now (pun intended)

pine steeple Jul 8, 2019, 1:03 PM

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only reason you would adjust that is if you had some really odd shaped pawn

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i mean override the GetActorEyes

slow bobcat Jul 8, 2019, 1:04 PM

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yeah, in my experience is more about how do you detect the thing you want to detect rather than from where

lyric flint Jul 8, 2019, 3:17 PM

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sorry @pine steeple didnt mean to ignore you

tulip shale Jul 8, 2019, 7:46 PM

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anyone else have a problem with the Stat --> Advanced list for debug stuff? mine goes off screen i cant scroll to the top to enable the ai stuff

slow bobcat Jul 9, 2019, 7:23 AM

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do you mean the stat AI, stat AIBehaviorTree commands?

tulip shale Jul 9, 2019, 6:35 PM

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not sure, cant see them but the docs say there are options there. i wanted to see the ai perception

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also, can anyone give me an idea about the best way to have information on the pawn set a value on the behavior tree blackboard? i feel like a service constantly checking the values would be a bit rough and some people said dont set blackboard values outside of the behavior tree, so im not sure =/

lyric flint Jul 9, 2019, 8:54 PM

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Will open up the engine

ocean sleet Jul 9, 2019, 8:54 PM

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Is there a comma missing or is the spelling wrong on that message?

lyric flint Jul 9, 2019, 8:55 PM

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First of all, do you have a character derived from Character class?

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If yes, does it have a movement component?

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One such as this

📎 unknown.png

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The compnent highlighted with my mouse

ocean sleet Jul 9, 2019, 8:56 PM

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I have a pawn. Do I need a character?

lyric flint Jul 9, 2019, 8:57 PM

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Change parent class to character, will make life easier

ocean sleet Jul 9, 2019, 8:57 PM

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Where do I do that?

lyric flint Jul 9, 2019, 8:58 PM

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WIll show;

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📎 unknown.png

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Click class Settings, and on the default menu to the right, cahnge parent class to Character

ocean sleet Jul 9, 2019, 8:59 PM

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Aight

lyric flint Jul 9, 2019, 9:00 PM

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Now if you click on character here and write ai in the detail tab's search window youll get this

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📎 unknown.png

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Set to auto possess to make sure it always possesses the cahracter, and you should now make a custom AI-controller class derived from Ai-controller

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character*

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So make another BP derived from that, after you've done that go back to the character and in the details panel under AI controller you set the one you just made

ocean sleet Jul 9, 2019, 9:04 PM

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?

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📎 Screenshot_1565.png

lyric flint Jul 9, 2019, 9:04 PM

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That is correct, you will initialize the BT like that, now open the BT and its blackboard

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Do you haev any variables in teh Blackboard?

ocean sleet Jul 9, 2019, 9:05 PM

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no

lyric flint Jul 9, 2019, 9:06 PM

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Ok make one variable for now, of Object type and set it to actor like this

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📎 unknown.png

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Now we get to teh part where you actually make it follow you, in the behavour tree toolbar you should see some buttons

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New Task, New Service, New Decorator,

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Press New service, A service will run while it's doing the steps below it ar running, and will therefor be able to update any variables and can change teh outcome of tasks or abort tasks when needed,
so we are going to make a service to find all actors of the class and set the closest actor to ActorObject, I will show how

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I will add comments to the graph in the image I post, so its easily understandable

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wait 2 minutes

lyric flint Jul 9, 2019, 9:32 PM

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In your service; @ocean sleet

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📎 unknown.png

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📎 unknown.png

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📎 unknown.png

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📎 unknown.png

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THis is the heavy lifting so to speak, now there is only minor stuff to do in teh BT and you should be done for getting him to follow you

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Hope my comments are explaining it well enough

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If you have ay question btw jsut shoot @ocean sleet

ocean sleet Jul 9, 2019, 9:38 PM

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What is that "get"?

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Wait, found it

lyric flint Jul 9, 2019, 9:39 PM

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Okok

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THen after you've made your service I suggest you go into the content browser and rename it to something clear, it's autogenerated name is awful

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after that;

ocean sleet Jul 9, 2019, 9:44 PM

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distance (vector)?

lyric flint Jul 9, 2019, 9:45 PM

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Yes,Distance( vector)

ocean sleet Jul 9, 2019, 9:46 PM

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Cant find that one

lyric flint Jul 9, 2019, 9:46 PM

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After your sevice is done and saved; In your BT, draw a sequence (or selector) from the root node and add your sevice to it like this

📎 unknown.png

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Not finding it like this?

📎 unknown.png

ocean sleet Jul 9, 2019, 9:48 PM

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Nope

lyric flint Jul 9, 2019, 9:48 PM

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gettig any distance nodes?

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can you prntscreen what you are getting? Easier then to explain maybe

ocean sleet Jul 9, 2019, 9:49 PM

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📎 Screenshot_1566.png

lyric flint Jul 9, 2019, 9:50 PM

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Ok lets make our own distance function then, open a new function

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Add two inputs, both vectors, name them whatever you find fitting

ocean sleet Jul 9, 2019, 9:52 PM

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Where do I do function?

lyric flint Jul 9, 2019, 9:52 PM

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Were gonna do some simple vectorm ath here I'll do the same as before with an images with a comments to explain what is goig on;
On teh left sidebar you see Event graph Tab, and just below that a function tab* , press the + button on the function tab

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Not teh Ovveride button, the + button just next to it

ocean sleet Jul 9, 2019, 9:54 PM

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Aight

lyric flint Jul 9, 2019, 10:02 PM

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Distance function with comments

📎 unknown.png

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AFter this function is created in its Details Tab* check the Pure checkbox, you can see the checkbos in teh image, just above teh inputs/outputs in teh settings tab

ocean sleet Jul 9, 2019, 10:05 PM

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How do I get that squaring thing?

lyric flint Jul 9, 2019, 10:06 PM

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right click on the graph and type sqrt

ocean sleet Jul 9, 2019, 10:06 PM

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details that would probably be necessary

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I don't know how to get any of the math stuff. It's difficult when there's about 100 functions named "multiply"

lyric flint Jul 9, 2019, 10:09 PM

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So using the pythagorean theorom we know the distance of a line will be its components squared, summed then squarerooted

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Just type * and choose the ' Float * Float '

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asme with + , choose ' Float + FLoat '

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and ' Vector - Vector ' for the vector subtraction at the beginning of the function

ocean sleet Jul 9, 2019, 10:13 PM

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📎 Screenshot_1567.png

lyric flint Jul 9, 2019, 10:14 PM

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I would say remove the two bytes, the non used inputs, and tehn check teh "Pure" box here

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📎 unknown.png

ocean sleet Jul 9, 2019, 10:15 PM

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not sure how to remove those

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nvm

lyric flint Jul 9, 2019, 10:16 PM

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after the function is saved you can right click in the BP's event graph, and serach for your specific function name nad add it to teh graph, because you have set it to pure it should look like this;

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📎 unknown.png

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You can now use that because the othe functions were missing, but hey you learned some vector math by it so its still good I say

ocean sleet Jul 9, 2019, 10:19 PM

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distance array?

lyric flint Jul 9, 2019, 10:20 PM

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Make a new variable, make it a Float, in its Detail Tab click here and choose this to make the variable an array

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📎 unknown.png

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Yousee the litte drop down of symbols by "Float" in the right side, the details tab?

ocean sleet Jul 9, 2019, 10:21 PM

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Got it

lyric flint Jul 9, 2019, 10:21 PM

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the one looking ike a grid is to make it into an Array

ocean sleet Jul 9, 2019, 10:24 PM

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Alright,

📎 Screenshot_1568.png

lyric flint Jul 9, 2019, 10:25 PM

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Ok one small but important thing before you head bac kto the Behaviour Tree, click in teh Variable Enemykey

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click on teh eye next to it, it should become Yellow and open, instead of gray and closed

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this indicates it is accessible from other places

ocean sleet Jul 9, 2019, 10:26 PM

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That's more disturbing than an actual cryengine game

lyric flint Jul 9, 2019, 10:27 PM

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haha 😂

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If you scroll up you'll see an image where I show you how to add your newly created service to a selector or sequence in the BT

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after you've added it you set it to read your enemy key like this;

📎 unknown.png

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THen add a move <to task, they are native tasks so you don't have to build one your self, and set it to read target as your enemy key, because you have set tie Blackboard to read your enemy key from teh service it will use that balckboard value in the task and move teh character towads you

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📎 unknown.png

ocean sleet Jul 9, 2019, 10:31 PM

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I only see SelfActor

lyric flint Jul 9, 2019, 10:31 PM

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Can you show teh variables of teh service, if you open the service again

ocean sleet Jul 9, 2019, 10:33 PM

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📎 Screenshot_1570.png

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📎 Screenshot_1569.png

lyric flint Jul 9, 2019, 10:33 PM

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Ok, so click the BlockBoard tab on the right panel

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You have no keys set up there I think, make one of Object type and name it something with enemy, the click it and in its details tab set it up like this;

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https://cdn.discordapp.com/attachments/221798778208780288/598259015302119426/unknown.png

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Now after this is saved you should see this variable in the drop down under SelfActor

ocean sleet Jul 9, 2019, 10:42 PM

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Aight

lyric flint Jul 9, 2019, 10:43 PM

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Ok after you've placed the builtin "Move To" Task by right clicking the BT graph and typing Move To, you set it to read your Actor like I showed a few images back

ocean sleet Jul 9, 2019, 10:45 PM

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Move to?

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I don't remember being asked to make that one

lyric flint Jul 9, 2019, 10:45 PM

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No it is already made

ocean sleet Jul 9, 2019, 10:45 PM

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Where?

lyric flint Jul 9, 2019, 10:46 PM

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In the BT, right click on the graph area and click Tasks

ocean sleet Jul 9, 2019, 10:46 PM

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okay, now I see it

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was more than a few

lyric flint Jul 9, 2019, 10:47 PM

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Now its almost done

📎 unknown.png

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Now in teh Level, place a Navemsh Bounds Volume and make it such a size it encompasses the walkable areas you want the AI to traverse

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Save ofc

ocean sleet Jul 9, 2019, 10:48 PM

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Already did the navmesh thing

lyric flint Jul 9, 2019, 10:49 PM

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Ok then it's done, before you play though, make sure in the Service that it is looking for the Class you are going to play as, so if you play as pawn search for pawn actors instead of characters

ocean sleet Jul 9, 2019, 10:50 PM

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Does this also cover movement?

lyric flint Jul 9, 2019, 10:52 PM

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Yes, it should autmove, but this reminds me, you need to 'Allow Strafe' in the 'move to' detail panel

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📎 unknown.png

ocean sleet Jul 9, 2019, 10:52 PM

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📎 Screenshot_1571.png

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Do I set this to my player?

lyric flint Jul 9, 2019, 10:53 PM

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Are you playing as a Clawrich BP class? I thought it was teh AI that used that bp

ocean sleet Jul 9, 2019, 10:53 PM

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Clawrich is the monster

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Yes, the game is very... German

lyric flint Jul 9, 2019, 10:54 PM

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ok then no, don't set it to clawrich there, then it will only look for itself and not you

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Are you playing as a Pawn? when in play

ocean sleet Jul 9, 2019, 10:54 PM

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You mean the blueprint that I put in to play as?

lyric flint Jul 9, 2019, 10:54 PM

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Yes

ocean sleet Jul 9, 2019, 10:55 PM

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it's a character named player_bp

lyric flint Jul 9, 2019, 10:55 PM

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Ok, then search for that class

ocean sleet Jul 9, 2019, 10:55 PM

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Yeah... I tried that

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📎 Screenshot_1572.png

lyric flint Jul 9, 2019, 10:56 PM

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Ok so the probelm is you set it to wrong actor when setting it up, so all the nodes want another class

ocean sleet Jul 9, 2019, 10:57 PM

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I don't remember any other place I'd have to change

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unless You're about to ask me to break the connections and remake them to refresh it

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Which would be BS

lyric flint Jul 9, 2019, 10:58 PM

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Yes, you didn't set it to the correct actor in teh beginning, unreal engine does not update some changes like nodes from spefific arrays

ocean sleet Jul 9, 2019, 10:59 PM

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I'm honestly surprised I got that right

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What do I put down for the "GET" node connected to get all?

lyric flint Jul 9, 2019, 11:01 PM

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The get node gets a spefic item in the array, to get all would be to juse use the array

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I might have isunderstood your question though

ocean sleet Jul 9, 2019, 11:02 PM

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Probably, since I didn't ask what the get all node does

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📎 Screenshot_1573.png

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The "GET" thing that's missing here, not sure which one to grab for it

lyric flint Jul 9, 2019, 11:03 PM

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Aha, grab the 'Out actors' from the first node

ocean sleet Jul 9, 2019, 11:08 PM

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Can i get it from right clicking the grid?

lyric flint Jul 9, 2019, 11:11 PM

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So here I first right clicked the graph and search * Get a copy ' then I connect the blue grid from the first node to the gray grid in the get node, the get node will become of the same type as the one you connected with

📎 unknown.png

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And you need to to teh same with the nodes I highlighted, replace them that is;

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📎 unknown.png

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Wait, you might be able to to this; disconnect the pins, if they turn gray then they have become wildcard and you can Re-connect and it should be fixed

ocean sleet Jul 9, 2019, 11:17 PM

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He is not moving

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And I got a error from a BT with Task in its name

lyric flint Jul 9, 2019, 11:17 PM

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Hm, when in play press this button on they keyboard '

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What does teh error say?

ocean sleet Jul 9, 2019, 11:18 PM

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Something not compiled right

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The error isn't happening anymore, so I can't get the exact details

lyric flint Jul 9, 2019, 11:19 PM

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Can you show an iamge of teh graph, teh Loop part

ocean sleet Jul 9, 2019, 11:20 PM

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📎 Screenshot_1574.png

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📎 Screenshot_1575.png

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📎 Screenshot_1576.png

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The BT the error is in has Task in the name, so it's not this one

lyric flint Jul 9, 2019, 11:21 PM

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For Loop is not connected

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MEaning it passes Null value to teh task, causing the task to error

ocean sleet Jul 9, 2019, 11:22 PM

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ForEachLoop?

lyric flint Jul 9, 2019, 11:22 PM

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Yes

ocean sleet Jul 9, 2019, 11:22 PM

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Where does it connect?

lyric flint Jul 9, 2019, 11:22 PM

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To the same as Array as teh Get node uses

ocean sleet Jul 9, 2019, 11:23 PM

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Is Valid Index is the only thing I can connect to without screwing up another connection

lyric flint Jul 9, 2019, 11:24 PM

#

You need to conenct teh Get to the Set Value As Object like this as well, so the blackboard can read it

📎 unknown.png

ocean sleet Jul 9, 2019, 11:25 PM

#

That was just something I forgot while connecting everything again

#

The only place I can put ForEachLoop is IsValidIndex

lyric flint Jul 9, 2019, 11:27 PM

#

Place a new for each loop like this, because you need to replace the one you already have if you can not connect to it without errors

📎 unknown.png

ocean sleet Jul 9, 2019, 11:31 PM

#

alright

#

I'm not getting errors anymore

#

It's simply not moving

lyric flint Jul 9, 2019, 11:31 PM

#

Ok press apostrophe button while in play window

#

you should get a AI degub soverlay on teh screen

#

On the left top corner of the screen

ocean sleet Jul 9, 2019, 11:33 PM

#

Aight

#

📎 Screenshot_1577.png

lyric flint Jul 9, 2019, 11:35 PM

#

press 0 3 adn 4 and move back and take an image of teh groudn below you and below the Ai, if teh navmesh is working proeprly it will light the ground green where it has calculated a path

ocean sleet Jul 9, 2019, 11:36 PM

#

📎 Screenshot_1578.png

lyric flint Jul 9, 2019, 11:36 PM

#

does it follow you if you move further back?, and does the green area change when you mve out f it like some meters beyond it

#

Shit I forgot one thing which will cause issues, but it is minor and can be fixed in ten seconds

ocean sleet Jul 9, 2019, 11:38 PM

#

It does change

#

Shit sorry

#

fuckin choked while typing

lyric flint Jul 9, 2019, 11:39 PM

#

neat, that is working, it knows where you are at, teh nwe need to find out why it ins't moving, but its good it changes, it means it has targeted your character correctly

ocean sleet Jul 9, 2019, 11:39 PM

#

📎 Screenshot_1579.png

lyric flint Jul 9, 2019, 11:39 PM

#

still do this change in teh service before continuing

#

stop teh play and add this; it will make sure teh array is cleard each tiem it runs teh service so it doesn't stack up each tick when it shouldn't

📎 unknown.png

#

📎 unknown.png

#

Add that and the service is finsihed, but finding out why it doesn't move even after finding you
hmm , did you check the 'Allow Strafe* box in the BT, teh detial panel of the Move To task

ocean sleet Jul 9, 2019, 11:44 PM

#

📎 Screenshot_1580.png

lyric flint Jul 9, 2019, 11:45 PM

#

I know that causes the ai to lag, if strafe is not allowed it doens't move in every direction

ocean sleet Jul 9, 2019, 11:45 PM

#

Yes I did

#

📎 Screenshot_1581.png

lyric flint Jul 9, 2019, 11:46 PM

#

ok see in teh lower left corner

#

it says it is moving to self actor

ocean sleet Jul 9, 2019, 11:46 PM

#

Already got that down, it's working

lyric flint Jul 9, 2019, 11:47 PM

#

But did you check that it hadn't reverted to Self actor after remaking the connections that broke?

#

The BT has a learning curve, but you've encountered most of it by now and soon you'l get used to things reverting back and you needing to do quick edits,

ocean sleet Jul 9, 2019, 11:50 PM

#

Sounds like the game would be unstable when launched

lyric flint Jul 9, 2019, 11:51 PM

#

When you make small edits in the services the BT reverst back to self actor often, won't be an issue when it's finsihed and comiled to a game, only isseud whe nin active development, but you are almost finsihed with everything

ocean sleet Jul 9, 2019, 11:52 PM

#

Would it be possible to change a value when it starts moving so I can play a running animation?

lyric flint Jul 9, 2019, 11:53 PM

#

So why I have made it so it targets the players actor is becasue it will change direction and follow the players changing direction, if we had used location it would not change its target location continuously

ocean sleet Jul 9, 2019, 11:53 PM

#

It does not rotate

#

Oh

#

Shit, I read that wrong

lyric flint Jul 9, 2019, 11:54 PM

#

I mistyped a bit aswell making it harder to understand, I'll edit and fix the typos

ocean sleet Jul 9, 2019, 11:56 PM

#

If there's a value that is up when it's moving, I can make it switch animation

lyric flint Jul 9, 2019, 11:58 PM

#

YEs, you will need to set up comms to teh animBP tehn, I would use interface events to fire some logic set up in teh animBP

#

But I gotta go, you've got an almost finished basic AI going, whatever issues there are are minor, if it won't move I think some setting in the Clawmans BP might have been left unchecked, everything with finding you seemed to work well as it was confirmed by the navmesh recalculating to your position

#

I will see if someone in general can hel you though, maybe mathew is still up

ocean sleet Jul 10, 2019, 12:01 AM

#

Aight

thorny gyro Jul 10, 2019, 12:06 AM

#

so the issue is it won't move to the player still?

ocean sleet Jul 10, 2019, 12:08 AM

#

It moves fine, I was just wondering how difficult it would be to make the movement of Clawrich activate an animation, maybe through a variable

thorny gyro Jul 10, 2019, 12:08 AM

#

ah. well normally you would just set up a normal animation blueprint and have it handle it just like a player

ocean sleet Jul 10, 2019, 12:08 AM

#

If there's an issue, I'd say that it's maybe the short range that Clawrich can see the player at

thorny gyro Jul 10, 2019, 12:09 AM

#

get the speed and any other variables -> set the correct animation in the anim bp -> let it play.

ocean sleet Jul 10, 2019, 12:09 AM

#

Aight

thorny gyro Jul 10, 2019, 12:10 AM

#

the third person anim BP would be exactly what you would use for it. get some stuff from the thing it's on, determine what animations should be playing, adjust the animations as needed, repeat

#

and what is the problem with the short range that it can see the player at?

ocean sleet Jul 10, 2019, 12:11 AM

#

You gotta be like, distance where he would instantly collide with You in order to make him start following

thorny gyro Jul 10, 2019, 12:12 AM

#

what does your blueprint look like in the behaviour tree?

ocean sleet Jul 10, 2019, 12:13 AM

#

I'm not sure I understand the question

#

If You mean Clawrich or the Player, they are referenced

thorny gyro Jul 10, 2019, 12:14 AM

#

your service where you find the player to set him as the target

ocean sleet Jul 10, 2019, 12:15 AM

#

📎 Screenshot_1582.png

#

📎 Screenshot_1583.png

#

📎 Screenshot_1584.png

thorny gyro Jul 10, 2019, 12:16 AM

#

ok so your for each loop seems like it has nothing plugged into it, the one before your get actor locations

#

it should have the results of the get all actors of class node

#

you arent actually doing anything with the actors you find (your player)

ocean sleet Jul 10, 2019, 12:18 AM

#

The ForEachLoop in the first picture is extra from when he said I needed one, we didn't really end up needing it to make the follow work

thorny gyro Jul 10, 2019, 12:18 AM

#

the for each loop in the second picture

#

what is hooked into it?

#

the one right before your get actor location nodes

ocean sleet Jul 10, 2019, 12:19 AM

#

Branch and IsValidIndex

thorny gyro Jul 10, 2019, 12:20 AM

#

... I think you are missing the question

ocean sleet Jul 10, 2019, 12:20 AM

#

I took it as what is in the recieving end of the node

thorny gyro Jul 10, 2019, 12:21 AM

#

https://i.imgur.com/9MjJ5x1.png

Imgur

ocean sleet Jul 10, 2019, 12:21 AM

#

Like I said, Is Valid Index

thorny gyro Jul 10, 2019, 12:21 AM

#

I don't see anything plugged into that

#

you have the is valid plugged into the OUTPUT of the Get All Actors of Class node

#

you have nothing plugged into this For Each Loop

#

do you have more than 1 player? and will there ever be more than 1 player?

ocean sleet Jul 10, 2019, 12:23 AM

#

No. Definitely not in 3D instances

thorny gyro Jul 10, 2019, 12:24 AM

#

unhook the bottom input (the integer) on the Is Valid Index so it just shows 0

#

in the first picture unhook the bottom input of the GET node so it shows 0 as well

ocean sleet Jul 10, 2019, 12:25 AM

#

Still works without error

thorny gyro Jul 10, 2019, 12:26 AM

#

this is not the best way of doing this but this will basically get all actors of your character (should be 1 or index 0), check to see if it found anything (is valid index 0), and if so when the look completes with nothing in it it should set your blackboard value to the only thing in your get all actors array (index 0) which is your player

#

this should let it find the player anywhere it is in the world when this code is ran

#

the only downside to this is you have no distance check for the player at all

#

but this code should let it work right when you play assuming your blackboard is running correctly and has no other checks, it should set up the target wherever it is as the player when it starts

ocean sleet Jul 10, 2019, 12:28 AM

#

So this is a sort of... Zombie level of intelligence

#

📎 2019-07-09_21-33-52.mp4

#

I never realised how uh... Offputting this character is

thorny gyro Jul 10, 2019, 12:41 AM

#

this BTW is a bit more efficient basic way to do what you want https://i.imgur.com/K2ryYpv.png , it atleast does not check for all actors once you have one every tick but it only does it once.

#

I still would not do it this way tho as there is no reason to check for the player every tick (using a service) but it works

lyric flint Jul 10, 2019, 12:44 AM

#

Ok I'm aboutto crahs but I popped in before ,I saw this needed to be fixed adn I'll try to explain as short as possible; The FOrEachLoop needs to be replaced because the one currently connected is a for reach loop of a different type, becasue he had set wrong base class when first building the service;

📎 DW9q0V.jpg.png

#

YEs but if there are other players around or other NPC's lter check for each, if only one player it does not need distance check that is true, but the idea was to show how to distance check and use it in rpractice to show it works

thorny gyro Jul 10, 2019, 12:50 AM

#

I know you had to leave in the middle so not all gone done. I think it's all goodish now lol. I think it was a bit much to try and get him to do it "better" from the start and he got lost 😦

lyric flint Jul 10, 2019, 12:52 AM

#

But, I gotta ask him did he learn more from this then the tutorials, if yes It is good atleast I think, but yes maybe it was a bit too much to start with sorting distances

#

@ocean sleet

ocean sleet Jul 10, 2019, 12:54 AM

#

The tutorials said to do something much more simple, but it just didn't work in any circumstance

#

It asked me to use some premade movement script that was never stated

#

"Use the blueprint we made last video-" "Last video" in the series is them explaining maths

#

Every single tutorial I tried did exactly that

thorny gyro Jul 10, 2019, 12:57 AM

#

well I know for a fact that is not true because mine don't do that 😛

ocean sleet Jul 10, 2019, 12:58 AM

#

I said the ones I tried

thorny gyro Jul 10, 2019, 12:58 AM

#

oh wait you said every one you tried so yeah i guess that could be a possibility lol

#

weird more than one would say that tho

ocean sleet Jul 10, 2019, 12:58 AM

#

I mean, not exactly a video on maths, but never had anything to do with movement

lyric flint Jul 10, 2019, 1:01 AM

#

mathews tutorials are great, check his channel out, he shows how to do things from the ground up,
Many others don't show how to do it from the ground up and don't explain well

pine steeple Jul 10, 2019, 1:02 AM

#

i never use get all actors of class lol

#

its way to expensive

#

i use it on functions that is only ever called once

ocean sleet Jul 10, 2019, 1:02 AM

#

That's why I avoid tutorials that say "Lets use the third person blueprint"

pine steeple Jul 10, 2019, 1:02 AM

#

but thats it

ocean sleet Jul 10, 2019, 1:03 AM

#

It doesn't tell me how to do it myself, it just tells me how to build upon what is only meant as an example

pine steeple Jul 10, 2019, 1:03 AM

#

create a blank project and build it all 😃

ocean sleet Jul 10, 2019, 1:04 AM

#

If I do that, the tutorial doesn't work because I don't know what I need to make it move toward the player in BP

#

Because, there is a much simpler way to do it that the tutorials show, that is based on sense rather than proximity and such, but it just doesn't tell me how to make what I need in order for it to work

pine steeple Jul 10, 2019, 1:05 AM

#

single player game?

ocean sleet Jul 10, 2019, 1:05 AM

#

Yeah

pine steeple Jul 10, 2019, 1:05 AM

#

just use GetPlayerCharacter

#

with index 0

#

that is your player

ocean sleet Jul 10, 2019, 1:06 AM

#

It's the movement part that is difficult to figure out

pine steeple Jul 10, 2019, 1:06 AM

#

then have the ai move to that player

#

using goal tracking

#

if you want to use senses, then use Perception Component

#

but for very basic

#

goal tracking your player will make him chase the place

#

as a kinda brainless zombie

ocean sleet Jul 10, 2019, 1:07 AM

#

This is what every video tutorial asks me to make

📎 Screenshot_1591.png

pine steeple Jul 10, 2019, 1:07 AM

#

pawnsensing is obsolete

#

don't use it

ocean sleet Jul 10, 2019, 1:08 AM

#

Good to know

#

The environment I'm using for the game is a house. So Clawrich would probably get stuck very often as a zombie

lyric flint Jul 10, 2019, 1:09 AM

#

So the idea was to show how to do something more then just picking the first player but nothing complex just sorting ditances based on all players aroudn and piccking the closest,

ideally you want to find the player using perception and not use Find All,
but that would have made it all even longer and more convoluted for his first basic AI,
costs don't matter as much as starting to understand how things work was my approach

pine steeple Jul 10, 2019, 1:10 AM

#

http://www.interkaos.com/grabs/UE4Editor_k2XAw4JU8O.png

lyric flint Jul 10, 2019, 1:10 AM

#

So goaltacking plus a distance sorting

pine steeple Jul 10, 2019, 1:10 AM

#

that is all you would need

#

for very basic

#

hunt the player

#

if you want sight, hearing, etc

#

then AI Perception

ocean sleet Jul 10, 2019, 1:11 AM

#

Already sounds better than pawn sensing

pine steeple Jul 10, 2019, 1:11 AM

#

http://www.interkaos.com/grabs/UE4Editor_R6xVBUsuyW.png

#

that is all find player does

#

thing is

#

he will chase you regardless of where you are

#

doesn't need sight or anything

#

if you want sight and all that stuff, use perception system, but out of the box its kinda garbage

#

i ended up ripping it all about

#

and generating aggro values based on percieved senses

#

                    float Aggro = ActorAggro.Find(Actor)->GetAggro();
                    EPerceptionSense Sense = UAggroComponent::GetEnumBySense(StimulusInfo.Type);
                    FAIPerceptionAggro* PerceptionAggroResponse = ActorAggroPtr->PerceptionAggro.FindByKey(Sense);

                    float CalculatedSenseAggro = 0.f;

                    if (!PerceptionAggroResponse) 
                    {
                        AGGRO_VLOG(GetOwner(), "Tried to update perception aggro for: %s but found no Perception Aggro response for sense: %s.", *GetNameSafe(Actor), *UAggroComponent::GetSenseNameBySenseID(StimulusInfo.Type));
                        continue;
                    }

                    switch (Sense)
                    {
                    case EPerceptionSense::EPS_SIGHT:
                    {
                        const float Range = Cast<UAISenseConfig_Sight>(MyController->GetPerceptionComponent()->GetSenseConfig(StimulusInfo.Type))->SightRadius;
                        const float Distance = (StimulusInfo.StimulusLocation - StimulusInfo.ReceiverLocation).Size();
                        const float DistMulti = 1.0f - FMath::Clamp((Distance / Range), 0.f, 1.f);
                        CalculatedSenseAggro = (BasePerceptionAggro * PerceptionAggroResponse->GetMultiplier()) * DistMulti;
            
                        if (FMath::IsNearlyZero(Actor->GetVelocity().Size()))
                        {
                            CalculatedSenseAggro += StationaryMarineMultiplier;
                        }````

#

this kinda stuff 😄

ocean sleet Jul 10, 2019, 1:14 AM

#

jesus

#

And I thought the new KoRn song was overproduced

pine steeple Jul 10, 2019, 1:16 AM

#

thats nothing

#

that just produces the aggro

#

sends it off to the ai controller

#

who then decides if a new target has more aggro than the previous target and if he should change his target 😄

#

and each player has a set of tokens

#

that ai need to take

#

if they cant get a token, they don't pursue that player

#

so one player doesnt end up with 50 monsters attacking it

#

8 player co-op game

#

so would be bad if the monsters just targeted one player 😄

ocean sleet Jul 10, 2019, 1:17 AM

#

I'm still disappointed of how rare 4 player split screen is these days

pine steeple Jul 10, 2019, 1:18 AM

#

last split screen game i ever played was Modern Warfare 2

#

back in 2009

ocean sleet Jul 10, 2019, 1:18 AM

#

BO2 had three player split screen

#

maybe 4, idk

#

It almost crashes the console, but it's worth it

#

It's like... The option for split screen needs to be there for people who can take the heat

lyric flint Jul 10, 2019, 1:19 AM

#

const, haven't you tried having an effect whihc basically mutiplies a players token for a period of time, so lets say the most effective players kills a big mosnter, he get 3 times more toeksn for a short period and he gets a hard time, if the rest of the team wises up they might be able to save him otherwise they loose their best player for teh game

pine steeple Jul 10, 2019, 1:19 AM

#

yeah

lyric flint Jul 10, 2019, 1:20 AM

#

And good gaemplay idea acocrding to me, jsut waiting to be tested out

pine steeple Jul 10, 2019, 1:20 AM

#

another thing we have is, if a player is being targeted by a boss

#

he gets his tokens reduced

#

so he doesnt get too many little monsters attacking him the same itme

lyric flint Jul 10, 2019, 1:20 AM

#

That is good

ocean sleet Jul 10, 2019, 1:21 AM

#

I still wish Zombie games were more brutal

#

Dead Rising 1 level, I have never seen matched

lyric flint Jul 10, 2019, 1:22 AM

#

have you played dying light?

ocean sleet Jul 10, 2019, 1:23 AM

#

Not the kind of brutal I want

#

In Dead Rising 1, You get death animations where people get torn to pieces or have their tongue ripped out

lyric flint Jul 10, 2019, 1:24 AM

#

Aha you mean like that, absrud brutality, true not many gaems like that anymore, was more common before

ocean sleet Jul 10, 2019, 1:25 AM

#

I played 30 hours of Dying Light so I could get some enemies into a zombie filled situation

#

Death animation not very satisfying

#

And before You say something about edginess, consider how much of a pain armed soldiers are early on

lyric flint Jul 10, 2019, 1:26 AM

#

Well you haven' used teh stom or teh kick enough I would say

#

Stomp

#

and kick

#

best attacks in dying light

#

kappa

ocean sleet Jul 10, 2019, 1:26 AM

#

I mean more zombie stuff

#

I still play Dying Light a lot, I just wish that one thing was present

lyric flint Jul 10, 2019, 1:28 AM

#

yeah I can see what you mean, maybe you'll make the next dead rising type of brutal game, if it something you really like to make then it's a worthwile goal

ocean sleet Jul 10, 2019, 1:28 AM

#

I'm not much for modelling humans

lyric flint Jul 10, 2019, 1:32 AM

#

Start with smaller projects and build to a goal project, starting wiht the goal project can make it overwhelming, don't care about the modeling yet, work on the mechanics and build to wahtever part you need, modeling humasn should be a concern for much later

ocean sleet Jul 10, 2019, 1:33 AM

#

In a game with a compact house, it would probably be necessary to have some sort of stealth (well, ability to lose him)

lyric flint Jul 10, 2019, 1:37 AM

#

THat is true,having to steathl around adds a bit of uncertainty and works great in small spaces for adding stress and also some confusion at times when playing

ocean sleet Jul 10, 2019, 1:38 AM

#

I think the confusion for my game will be why the monster is friendly until halfway through

#

I had a PT, kind of Granny type idea for it

#

Go through the house and find keys on the way to the end of the house while the monster is docile, do it again but the monster is angry, third time, things go wrong, all detail I'll give

#

plus, if the monster is running right at the player, it'll probably get stuck

tulip shale Jul 10, 2019, 4:22 AM

#

so if i have this in my blackboard...

📎 unknown.png

#

should this work in a task?

📎 unknown.png

#

for things like MoveTo, ThreatActor works in the BT. it also says in simulation/pie that it sets a ThreatActor, but whenever i try to get its value like this its empty

tulip shale Jul 10, 2019, 4:40 AM

#

apparently an editor restart fixed it? no idea...

azure cliff Jul 10, 2019, 8:25 AM

#

Hey guys, how do i get service to run once in BB?

lyric flint Jul 10, 2019, 12:35 PM

#

Maybe set it up as a task instead @azure cliff Or set up a a check in teh service so it only runs the logic once and next time it ticks it won't get past a DoOnce or an If Branch (examples on ways to stop it)

#

Have tou connected tehm in the details panel of the service/task/decorator ? @tulip shale

azure cliff Jul 10, 2019, 12:52 PM

#

@lyric flint ah i see, thanks! I will try that

odd hazel Jul 10, 2019, 1:44 PM

#

My AI dont work after build

#

only this one with have BH

#

statick/dynamic same story

#

on standalone works fine

sleek holly Jul 10, 2019, 4:45 PM

#

I came back to my projexct, first time from few months and my nav mesh doesnt work
I have navMesh bounds volume but AI can't move

#

I already tried replacing navMesh bounds volume

tulip shale Jul 10, 2019, 5:27 PM

#

@lyric flint what do you mean connect them? it does work now, i just had to restart the editor for some reason. maybe im missing something though? O.o

lyric flint Jul 10, 2019, 5:35 PM

#

Well if it works then you had it already set up, adn my question wasn't necessary, maybe just a bug with the editor @tulip shale

tulip shale Jul 10, 2019, 5:38 PM

#

not the first time a restart has fixed a problem eh

ocean sleet Jul 10, 2019, 8:33 PM

#

https://wiki.unrealengine.com/Blueprint_Behavior_Tree_Tutorial

Blueprint Behavior Tree Tutorial

#

Not really sure what the deal is with this one, but it's not really working out

pine steeple Jul 10, 2019, 9:41 PM

#

yuck

#

that tutorial sucks

#

but

#

better than other ones out there

ocean sleet Jul 10, 2019, 10:02 PM

#

This is why I don't like it when people say to read the documentation

#

This is the only thing that I found

#

All other links redirect me to the beginning of the documentation, so this is the only one that even works

#

Well... The link works, I'm not sure what I'm doing wrong for the actual instructions

pine steeple Jul 10, 2019, 10:29 PM

#

Documentation not tutorials 😄

ocean sleet Jul 10, 2019, 10:51 PM

#

The documentation has nothing on behavior trees

#

it gives links that just redirect to the main page

#

well... The links don't really exist

#

but if You use them from google, it shows the url correctly, but still redirects to the main page (Beginning of documentation)

#

That "tutorial" is the only thing I have found so far on the UE4 site that remotely teaches behavior trees

pine steeple Jul 10, 2019, 11:06 PM

#

there is a video tutorial

#

on ai behaviours

#

that epic live streamed

ocean sleet Jul 10, 2019, 11:44 PM

#

four years old

#

and it's already concerning enough what a six month old tutorial showed me

#

And I'm starting to think they aren't actually in English

#

You can see they're not actually speaking the words that are heard

ocean sleet Jul 11, 2019, 1:49 AM

#

Can someone try that tutorial to verify to me that I'm not insane?

#

Cause I've looked it over the past 8 hours and could not find what I did wrong

flint trail Jul 11, 2019, 2:14 AM

#

@tardy scarab do you happen to know if there are some AI goodies in 4.23 ? It feels like AI is the most stagnant part of UE4 :/

ocean sleet Jul 11, 2019, 3:50 AM

#

📎 Screenshot_1599.png

#

📎 Screenshot_1600.png

#

Unsure what's gone wrong here... It picks a spot, but doesn't move to it

tulip shale Jul 11, 2019, 3:54 AM

#

u have a navmesh?

ocean sleet Jul 11, 2019, 3:54 AM

#

yes

#

i also do have allow strafe enabled

tulip shale Jul 11, 2019, 3:55 AM

#

it may be case sensitive

ocean sleet Jul 11, 2019, 3:55 AM

#

what, exactly?

tulip shale Jul 11, 2019, 3:55 AM

#

nvm that was dumb of me, keys screw me up sometimes. hmm

#

does it work without your blackboard condition?

ocean sleet Jul 11, 2019, 3:56 AM

#

blackboard as vector?

tulip shale Jul 11, 2019, 3:57 AM

#

no the canseeplayer

ocean sleet Jul 11, 2019, 3:57 AM

#

I checked and it doesn't change anything

#

But my question is: Why would that be the issue if it's already going down that path as it is?

tulip shale Jul 11, 2019, 3:58 AM

#

happened to me before, even when my blackboard says a value is set, ive had conditions fail stuff below it. not sure why

ocean sleet Jul 11, 2019, 3:59 AM

#

And that's the thing that confused me. It would be moving to the chaseplayer one if it was failing, but it's not

#

And I'm confused as to what is keeping the blueprint from moving, since that seems to be the issue

#

It doesn't have any trouble getting the vector, and I've made sure the vectors are within the navmesh

tulip shale Jul 11, 2019, 4:01 AM

#

📎 unknown.png

#

i use this for random vector

ocean sleet Jul 11, 2019, 4:01 AM

#

I tried navigableradius already

#

it's just off screen, under the other radius one

tulip shale Jul 11, 2019, 4:02 AM

#

maybe try setting it as a variable before setting blackboard value

ocean sleet Jul 11, 2019, 4:02 AM

#

Alright

#

What do I put down to get that "set"?

#

the list of "set"s is pretty huge

tulip shale Jul 11, 2019, 4:03 AM

#

well u have to make a vector variable on the left, drag it out and Set

#

my variable is called RandomVector, if thats what u mean

ocean sleet Jul 11, 2019, 4:05 AM

#

"makeset"?

tulip shale Jul 11, 2019, 4:05 AM

#

no?

ocean sleet Jul 11, 2019, 4:05 AM

#

Vector set?

tulip shale Jul 11, 2019, 4:05 AM

#

hang on... when u hit simulate is the random vector actually different each time?

ocean sleet Jul 11, 2019, 4:06 AM

#

It's different every time MoveTo finishes

#

also, I can't do that thing where You drag out a line and get valid nodes

#

I literally had to look up how to build certain functions because they are missing from my list

tulip shale Jul 11, 2019, 4:08 AM

#

not sure why that would be

ocean sleet Jul 11, 2019, 4:08 AM

#

Maybe You don't know which one I mean...

tulip shale Jul 11, 2019, 4:08 AM

#

did you make a variable though? u can call it whatever u want... its just the little + button

ocean sleet Jul 11, 2019, 4:09 AM

#

📎 unknown_12.png

#

What do I type in to get this?

tulip shale Jul 11, 2019, 4:10 AM

#

📎 unknown.png

#

on the left... u have to make a variable

#

set it to vector

#

call it whatever u want

ocean sleet Jul 11, 2019, 4:11 AM

#

Okay, You could've said "Drag the variable out and click set"

tulip shale Jul 11, 2019, 4:11 AM

#

this probably isnt the problem though

ocean sleet Jul 11, 2019, 4:11 AM

#

I feel like "Click" was the big missing word there

tulip shale Jul 11, 2019, 4:11 AM

#

📎 unknown.png

#

i didnt think this was that bad for instructions

ocean sleet Jul 11, 2019, 4:12 AM

#

I've powered through ones that had much worse spelling

tulip shale Jul 11, 2019, 4:12 AM

#

either way, probably not the problem. did you build the MoveTo node or is it the default?

ocean sleet Jul 11, 2019, 4:13 AM

#

Default

#

And "Set" didn't really change anything

tulip shale Jul 11, 2019, 4:13 AM

#

also, im assuming your AI has a movement component?

ocean sleet Jul 11, 2019, 4:13 AM

#

That depends on what You mean

tulip shale Jul 11, 2019, 4:13 AM

#

that part cant really depend on much it either does or doesnt

ocean sleet Jul 11, 2019, 4:13 AM

#

The AI? The Blueprint? the Tree?

tulip shale Jul 11, 2019, 4:14 AM

#

the ai, with the mesh

#

the npc whatever u want to call it, not the controller

ocean sleet Jul 11, 2019, 4:14 AM

#

The AI doesn't have a mesh

#

The Blueprint does

tulip shale Jul 11, 2019, 4:14 AM

#

ur ai is a blueprint

ocean sleet Jul 11, 2019, 4:15 AM

#

But it doesn't contain the skeletal mesh, or the collision

tulip shale Jul 11, 2019, 4:15 AM

#

then what does?

ocean sleet Jul 11, 2019, 4:15 AM

#

the BP does

tulip shale Jul 11, 2019, 4:15 AM

#

ffs...

#

whatever ur trying to move

#

make sure it has a movement component

ocean sleet Jul 11, 2019, 4:16 AM

#

Let's just clarify that there's a Character BP with a CharacterMovement, mesh, and a collision. Who's self has a setting that makes it use the AI Controller, which has three nodes that make it use the Tree and BlackBoard

#

Like literally every tutorial I've used has said to do

tulip shale Jul 11, 2019, 4:17 AM

#

yes the tutorial ur following probably explained that part fine

ocean sleet Jul 11, 2019, 4:18 AM

#

I was just looking for the proper terminology so I can be 100% sure on what I'm reading

tulip shale Jul 11, 2019, 4:18 AM

#

only 1 of those things exists in the world, the rest have no location and cant move, but thats entirely beside the point

ocean sleet Jul 11, 2019, 4:19 AM

#

And so, the answer is, if You mean the BP; yes. AI? No. Tree? No

#

And that's dependant on if a CharacterMovement is what You even mean

tulip shale Jul 11, 2019, 4:20 AM

#

there are other types of movement components

#

and of those things its the only thing that could even have one

ocean sleet Jul 11, 2019, 4:21 AM

#

That's where I got confused, because the itself AI, if I'm correct, is the controller. The BP is just it's body

#

So "AI BP" is really hard to tell if You mean the BP, or the Node Editor in the AI Controller

#

And I still haven't heard if CharacterMovement is what You're looking for

tulip shale Jul 11, 2019, 4:21 AM

#

ya sure

ocean sleet Jul 11, 2019, 4:22 AM

#

"Not 100%"

tulip shale Jul 11, 2019, 4:24 AM

#

and ur sure the navmesh is fine, press P it shows up normally?

ocean sleet Jul 11, 2019, 4:24 AM

#

Yes

#

It's like saying "Put the knife in the jar" instead of "Lower the knife into the jar with a grip". You're increasing the risk of Me unknowingly not doing what You want me to

tulip shale Jul 11, 2019, 4:29 AM

#

ur not an ai, it shouldnt have to be literal. humans should be able to interpret things or at least come close. ur not always going to have things typed out for you to follow. as for your problem, dunno. looks like a pretty simple function. if its in that stage of the BT i would guess it is being told to move. u say the vector changes so its getting a vector. only guess would be it cant get to that vector because its underground or in the sky or something navmesh related.

#

u could probably put a Wait in there after you tell it to move

ocean sleet Jul 11, 2019, 4:30 AM

#

I have also tried wait

#

I have also tried wait

#

It's like... People have been saying for the past two days "use documentation" when the links are broken on Behavior Tree documentation

#

And the UE4 Live Training session I keep getting linked is already what I'm having the issues with

#

I'll even try a wait right now

tulip shale Jul 11, 2019, 4:32 AM

#

https://www.youtube.com/watch?v=zNJEvAGiw7w

YouTube

Ryan Laley

Unreal Engine 4 Tutorial - AI - Part 1 The Behaviour Tree

Welcome to the start of a brand new series. This time we are diving into AI for games. This episode introduces the concepts being used in AI design and in pa...

▶ Play video

#

this one seemed helpful, has a few parts to it

ocean sleet Jul 11, 2019, 4:33 AM

#

That was the one I used for this

tulip shale Jul 11, 2019, 4:34 AM

#

i followed that a while ago and it worked. since your BT is showing the vector and MoveTo is selected, something is stopping it from moving but im not sure

ocean sleet Jul 11, 2019, 4:35 AM

#

I remember someone saying that it's never going to work if I don't go in from the beginning. Well... I'm pretty damn sure this is as basic as it gets

tulip shale Jul 11, 2019, 4:36 AM

#

are you spawning these with a bp or do you place them in the world?

ocean sleet Jul 11, 2019, 4:36 AM

#

I drag the BP into the world and it acts on what the Controller gets from the tree

tulip shale Jul 11, 2019, 4:37 AM

#

so in your character bp, on the right under Pawn, AI Controller Class it has your custom class in it?

ocean sleet Jul 11, 2019, 4:37 AM

#

Yes

tulip shale Jul 11, 2019, 4:38 AM

#

and in your controller you have it RunBehaviorTree on Event BeginPlay?

ocean sleet Jul 11, 2019, 4:38 AM

#

yes

tulip shale Jul 11, 2019, 4:39 AM

#

ya i figured... cuz it prolly wouldnt show it doing anything if it didnt exist/run

ocean sleet Jul 11, 2019, 4:39 AM

#

Well, let's test that

tulip shale Jul 11, 2019, 4:40 AM

#

well... have you tried MoveDirectlyToward instead of MoveTo?

ocean sleet Jul 11, 2019, 4:40 AM

#

that would create more issues

tulip shale Jul 11, 2019, 4:41 AM

#

but does it move?

ocean sleet Jul 11, 2019, 4:41 AM

#

because even if it worked, my NPC wouldn't be capable of walking around a pillar, let alone a chair

tulip shale Jul 11, 2019, 4:41 AM

#

im aware

ocean sleet Jul 11, 2019, 4:41 AM

#

Doesn't do a thing

#

if I'm correct, both my task and my moveto would use the targetlocation key, yes?

tulip shale Jul 11, 2019, 4:43 AM

#

findlocation looks like it sets a vector, MoveTo uses that vector. as far as i can tell

ocean sleet Jul 11, 2019, 4:43 AM

#

yes

#

I do have one that works to chase the player...

#

📎 Screenshot_1602.png

tulip shale Jul 11, 2019, 4:44 AM

#

weird because your chase player is set to SelfActor

ocean sleet Jul 11, 2019, 4:44 AM

#

but this is a little bit fucking overkill for a beginner to work with

tulip shale Jul 11, 2019, 4:45 AM

#

i cant see it, screenshot is huge and barely shows that but................. why is there so much stuff

ocean sleet Jul 11, 2019, 4:45 AM

#

Every single node was necessary for it to work

tulip shale Jul 11, 2019, 4:45 AM

#

📎 unknown.png

#

this is how i chase whatever the target is

#

which i assure u is backwards

ocean sleet Jul 11, 2019, 4:46 AM

#

Well, You've seen by now how well it works when I try the simple way

tulip shale Jul 11, 2019, 4:46 AM

#

but im lazy and havent fixed it

#

ok ya but if ur doing something super messy somewhere it can make the simple way not know what to do. however, end of the day... u get a vector and its not moving to it. can you try the GetRandomPointInNavigableRadius again and use a smaller radius value like 200?

ocean sleet Jul 11, 2019, 4:47 AM

#

Why would it need to be smaller?

tulip shale Jul 11, 2019, 4:48 AM

#

because maybe its trying to go somewhere it cant

#

also its testing, change stuff see what does something

ocean sleet Jul 11, 2019, 4:49 AM

#

📎 Screenshot_1603.png

#

I feel like when I hear the word testing, that it's strange that no one has been able to find the issue yet

tulip shale Jul 11, 2019, 4:50 AM

#

well, without knowing everything youve done everywhere else before you even thought about working on ai...

#

a simple checkbox somewhere can screw things up

ocean sleet Jul 11, 2019, 4:50 AM

#

I'd think that someone would know where things can go wrong

tulip shale Jul 11, 2019, 4:51 AM

#

well ya assuming nothing else is changed

ocean sleet Jul 11, 2019, 4:53 AM

#

Taking "It's all relative" into account, I would think that anything I did in animation, or importing skeletal meshes, or movement scripts won't affect this tree

tulip shale Jul 11, 2019, 4:54 AM

#

you have custom movement?

ocean sleet Jul 11, 2019, 4:54 AM

#

for a player blueprint, not for Clawrichs blueprint

#

Unless You're just astonished that someone in my situation figured out how to open notepad

tulip shale Jul 11, 2019, 4:55 AM

#

dont know why ud think that but ok

#

probably unrelated but have you turned on EQS?

ocean sleet Jul 11, 2019, 4:56 AM

#

Well, we haven't really gotten that far yet, seeing as my problems are on the first 7 minutes of every tutorial

#

I could tell You what BFFLTDDUP means, but I haven't got a damn clue what EQS is

#

... Maybe I am not entirely human

tulip shale Jul 11, 2019, 4:57 AM

#

no i think most ppl know what that means

#

uhm... EQS is in Edit (top left) Editor Preferences --> Experimental --> AI its a checkbox

ocean sleet Jul 11, 2019, 4:58 AM

#

"X to doubt"

#

That is a long fucking acronym, I guarentee You'll mess up at least one word

tulip shale Jul 11, 2019, 4:59 AM

#

environment query system. shouldnt effect anything really im just trying to get the same stuff set to rule it out

ocean sleet Jul 11, 2019, 4:59 AM

#

Alright, You misread what I said than

#

The acronym I sent

#

That might explain why You said it was that obvious

tulip shale Jul 11, 2019, 5:00 AM

#

well then theres more than 1 meaning but really unimportant no matter what it is

ocean sleet Jul 11, 2019, 5:00 AM

#

knowledge is power

#

EQS is enabled

tulip shale Jul 11, 2019, 5:00 AM

#

knowledge isnt power thats a dumb saying

#

i dont care about some acronym, im trying to help figure out what ur ai problem is

ocean sleet Jul 11, 2019, 5:01 AM

#

Knowledge makes me better than the guy with a Justin Bieber haircut who moons girls

tulip shale Jul 11, 2019, 5:01 AM

#

matter of opinion i suppose

ocean sleet Jul 11, 2019, 5:02 AM

#

And I would assume that I'm able to fill in the awkward silence while I'm trying to find EQS (which is now enabled)

#

Just because You don't know me doesn't mean there isn't an extremely high chance I'm not as much as a dick as that guy

#

jesus the fuckin double negative there...

tulip shale Jul 11, 2019, 5:02 AM

#

its not awkward silence in text, its not like were sitting at a table here. im going through from the beginning and i made an ai that can move randomly again

ocean sleet Jul 11, 2019, 5:02 AM

#

I can't even tell what I actually said

tulip shale Jul 11, 2019, 5:03 AM

#

so im not sure why urs doesnt move

#

what project template are u using?

ocean sleet Jul 11, 2019, 5:03 AM

#

blank project

tulip shale Jul 11, 2019, 5:04 AM

#

i started with the 3rd person template so i dont know if theres something missing from the blank one

ocean sleet Jul 11, 2019, 5:05 AM

#

I don't use templates for learning because I wouldn't use a template to make and sell a game

#

And that adds to a state of principle that if I can't do in a blank what I can do in a template meant for learning, it doesn't really teach You that much

tulip shale Jul 11, 2019, 5:06 AM

#

well ya but by that logic neither does a tutorial

#

or using an engine at all

#

why not just code it urself in C++

ocean sleet Jul 11, 2019, 5:07 AM

#

Because even if I had a full manual with comprehensible explanations, and I made 0 errors, it would take months

tulip shale Jul 11, 2019, 5:07 AM

#

and to expect a tutorial to work when ur not using the same template

#

months? decades prolly

ocean sleet Jul 11, 2019, 5:07 AM

#

Nah, I've seen people do it solo in 3 months out of collage

#

but the hours are considerable there, they probably had no life

tulip shale Jul 11, 2019, 5:08 AM

#

and it probably sucks

ocean sleet Jul 11, 2019, 5:08 AM

#

and the tutorials all use different templates

#

some of them don't even specify

tulip shale Jul 11, 2019, 5:09 AM

#

u picked ue4 for a reason. theres nothing wrong with learning how something works in its usual state before going back and starting from a lower point

#

have u seen this?

#

https://forums.unrealengine.com/development-discussion/blueprint-visual-scripting/3544-blank-project-cant-make-a-pawn-move

Unreal Engine Forums

Build powerful visual scripts without code.

ocean sleet Jul 11, 2019, 5:10 AM

#

Weird. when I made it completely blank, the lighting went blue

#

that entire project is really... The best word is fuccy. I had to make a new one

#

And the problem with learning that way is that I don't know what settings need to be changed to make it work. I am never told that

tulip shale Jul 11, 2019, 5:11 AM

#

with a blank project u still dont know

ocean sleet Jul 11, 2019, 5:12 AM

#

And with a template the default settings might not allow me to do everything I want to accomplish without, again, knowing the settings

tulip shale Jul 11, 2019, 5:12 AM

#

well ya but its a lot easier to ask and find out about settings than it is to reinvent them

#

after that point nobody can help you because nobody else knows it

#

step #1 isnt rebuild everything from scratch. step 1 is figure out how it works to begin with. get a prototype. then maybe make a blank project and try to recreate what you have already made

#

im not 100% sure ur problem is the blank thing but it does seem like a lot of people have issues with ai/movement in general. dunno. since ue4 came out ive used the 3rd person template

ocean sleet Jul 11, 2019, 5:16 AM

#

I've always been confused that it seems like when an engine goes free, it's almost like "Let's all figure this out together" and it comes in that fashion that it seems like the developers are even losing track at this point

#

Unity, for example, hasn't updated some pieces of its documentation in years

tulip shale Jul 11, 2019, 5:18 AM

#

things are constantly changing and to have a programmer go out of their way to update the docs every time they change something would slow development. its difficult to expect anyone else to even know whats changed

#

a majority of things still work like they did since they were made though, even if behind the scenes theyre different

ocean sleet Jul 11, 2019, 5:19 AM

#

The first things You see on learning Unity are video tutorials from 2010

tulip shale Jul 11, 2019, 5:19 AM

#

probably because the concept is the same

ocean sleet Jul 11, 2019, 5:19 AM

#

some of the core principles they teach You aren't even there anymore

tulip shale Jul 11, 2019, 5:19 AM

#

ok well thats their problem i guess?

#

u also cant assume everyone is using the newest version of the engine

ocean sleet Jul 11, 2019, 5:20 AM

#

I wouldn't expect people to use a version that has been outdated since before anyone could have even ran next gen games

tulip shale Jul 11, 2019, 5:21 AM

#

next gen is a relative term

#

FF7 was next gen when i was growing up

ocean sleet Jul 11, 2019, 5:21 AM

#

Well, next gen and 2010 come together to tell which generation is in question

tulip shale Jul 11, 2019, 5:22 AM

#

also, look how long it takes titles to be developed. there are games that started their development in 2010 that are still going today

ocean sleet Jul 11, 2019, 5:22 AM

#

7D2D isn't exactly an alpha

tulip shale Jul 11, 2019, 5:23 AM

#

i dont see ur point

#

still going like... still regularly updated games

ocean sleet Jul 11, 2019, 5:25 AM

#

the point is exactly what I said

tulip shale Jul 11, 2019, 5:25 AM

#

ya thx for clarification there

#

point is... ue4 is not a game. not everything is fed to you so you can complete your task

#

it is constantly being developed so the docs are sometimes outdated but thats also relative

#

you can almost always google exactly what your problem is and find results. if not, people here can be helpful

ocean sleet Jul 11, 2019, 5:27 AM

#

Alright, while You were going on about FF7, I remade everything in the third person example, and it's still not working

#

I bet You're surprised I was even doing anything

tulip shale Jul 11, 2019, 5:27 AM

#

well i didnt go on i said it literally once but ok

#

why do you assume so much about what im thinking?

#

as if im some adversary. im trying to help you

ocean sleet Jul 11, 2019, 5:29 AM

#

Because all but one person I've spoken to so far has defaulted to "use documentation" or sent me a link to a video I've already tried

tulip shale Jul 11, 2019, 5:29 AM

#

because 99% of the time its the correct answer

ocean sleet Jul 11, 2019, 5:29 AM

#

And a few people have come down hard on me for daring to try learning AI in the first place

#

Don't know why

tulip shale Jul 11, 2019, 5:30 AM

#

well, ya its the culmination of everything else... you should know everything else ai uses before using it

#

but im not saying that. i dont care what you spend your time on

#

you have a problem and im trying to help fix it. ur time is ur time

#

did you copy paste or did you rebuild the BT from scratch

ocean sleet Jul 11, 2019, 5:31 AM

#

rebuilt from the tutorial

tulip shale Jul 11, 2019, 5:31 AM

#

using default mannequin as your character for the ai?

ocean sleet Jul 11, 2019, 5:31 AM

#

yes

tulip shale Jul 11, 2019, 5:32 AM

#

show me the top left of your ai controller class, im assuming its parent is AIController

#

📎 unknown.png

#

simple like this? without perception probably

ocean sleet Jul 11, 2019, 5:33 AM

#

yes

#

I feel like there's something fucking wrong if we both get different results when we make a brand new controller, so that's a pretty thankful way for things to go

tulip shale Jul 11, 2019, 5:34 AM

#

show me the BT

ocean sleet Jul 11, 2019, 5:36 AM

#

just the tree, or do You want an introductory catalog of tree town?

tulip shale Jul 11, 2019, 5:37 AM

#

just the BT will be fine

ocean sleet Jul 11, 2019, 5:37 AM

#

📎 Screenshot_1604.png

tulip shale Jul 11, 2019, 5:38 AM

#

get rid of allow strafe

ocean sleet Jul 11, 2019, 5:38 AM

#

good choice anyway, they just call it a catalog so they can charge you more

#

doesn't really change the AI

tulip shale Jul 11, 2019, 5:39 AM

#

well with Allow Strafe checked, mine doesnt move

#

unchecked, moves fine

ocean sleet Jul 11, 2019, 5:40 AM

#

Weird when allow strafe is necessary for the one I got to work

#

The only way I got that mess to work was because I'm usually the marquis of bullshitting my way through things

tulip shale Jul 11, 2019, 5:41 AM

#

technically im not sure strafe would be touched in the MoveTo anyway, that seems more like an AnimBP thing. MoveTo just wants your actor to move to a location

#

does it move when Allow Strafe is unchecked?

ocean sleet Jul 11, 2019, 5:41 AM

#

no

tulip shale Jul 11, 2019, 5:44 AM

#

your bp has CharacterMovement, it is set to use your AIController, your AI Controller runs the BT on BeginPlay. You have a navmesh (P shows the walkable surface green)... all that right?

ocean sleet Jul 11, 2019, 5:44 AM

#

yes

tulip shale Jul 11, 2019, 5:44 AM

#

this is my random vector task

#

📎 unknown.png

ocean sleet Jul 11, 2019, 5:45 AM

#

my only difference is I set a range myself

tulip shale Jul 11, 2019, 5:45 AM

#

this is my BT

#

📎 unknown.png

#

i did too its just in the variable

ocean sleet Jul 11, 2019, 5:48 AM

#

motherfucker, it's working...

#

You know... I've spent 16 hour days, since sunday, trying to get this to work

tulip shale Jul 11, 2019, 5:49 AM

#

whatd u change?

ocean sleet Jul 11, 2019, 5:49 AM

#

That's the thing, I'm not sure

tulip shale Jul 11, 2019, 5:49 AM

#

whats weird is i tested like 20 times.... allow strafe stopped my ai from moving. but now it doesnt

#

ok but if u had a clean project right now...

#

u should be able to DESTROY all ur clutter in ur other project, replace with the working stuff

#

its pretty easy to scroll and look for the yellow <-- arrows to see what uve changed, but its been pretty well documented here in the channel

ocean sleet Jul 11, 2019, 5:50 AM

#

Reading that is like hearing the collage guy say "Beer-ROIDS" in Mr. Pickles

tulip shale Jul 11, 2019, 5:50 AM

#

i had a problem the other day, i had to restart the editor then it worked. not sure why

ocean sleet Jul 11, 2019, 5:51 AM

#

example of what I mean when I say "marquis of bullshit"

#

If I sent You the blend file for my PFP, You would wonder how the fuck I got it to look good at all

#

if You zoom in... It gets hellish quick

#

You might crash if You're using anything weaker than a 1060

#

Which is why I keep saying: Grease pencil isn't ready for untrained use yet

tulip shale Jul 11, 2019, 5:53 AM

#

ive never used it

ocean sleet Jul 11, 2019, 5:53 AM

#

And that shit has no tutorials

tulip shale Jul 11, 2019, 5:54 AM

#

i dont see the purpose of it really. i dont need to draw what i want something to look like i just make it look like it

#

but we are getting off topic in the ai channel. still no idea what isnt broken?

ocean sleet Jul 11, 2019, 5:54 AM

#

I'm not sure

#

It's 3AM, so I don't have long to figure it out

#

I'm gonna listen to 4AM at 3AM

tulip shale Jul 11, 2019, 5:56 AM

#

well at least it does work. tomorrow or whatever im guessing ur goal is to figure out if the problem is in your AI, or the project itself

ocean sleet Jul 11, 2019, 5:57 AM

#

I'm gonna figure that out right now

#

And in my opinion: Anyone who has a blatantly negative opinion on all of A7X (Avenged Sevenfold) can 👉 🚪

#

I can only see it as a issue on the project

tulip shale Jul 11, 2019, 6:07 AM

#

ok then the link i pasted earlier was about rebuilding some stuff that is missing from the blank project. it might have what u need

ocean sleet Jul 11, 2019, 6:08 AM

#

Just... Fuck it. You already got me to break principle. And I still believe that I will have to go very far out of my own way to find the proper settings

#

I have been here for almost an entire week of 16 hour days. And half of that time has been spent on this single Tree

tulip shale Jul 11, 2019, 6:09 AM

#

its good practice to test in different ways to see if its something ur doing wrong or something is just different

ocean sleet Jul 11, 2019, 6:10 AM

#

Although, I guarentee You that it will take more time than necessary to find the proper project settings

tulip shale Jul 11, 2019, 6:11 AM

#

well there was a whole tutorial series on it in that link i pasted

#

but i dont think its bad to at least make a learning project from a template

ocean sleet Jul 11, 2019, 6:12 AM

#

I cannot tell You the last time I have made a project that wasn't made to produce a product

#

It's possibly never

#

I learn by producing. If I can't I take the time necessary to figure out how

tulip shale Jul 11, 2019, 6:14 AM

#

well ur learning project probably shouldnt be ur production project

#

especially if 3 nodes can make an AI chase the player, and you gave someone that spaghetti dinner task

ocean sleet Jul 11, 2019, 6:15 AM

#

I don't even delete the tutorials that fail. I just store them to fix later

tulip shale Jul 11, 2019, 6:17 AM

#

i tend to start a new project to build a feature without the distraction of other stuff. i have 1 just for foliage, 1 for ai, 1 for inventory/equipment

ocean sleet Jul 11, 2019, 6:17 AM

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Can I? I do not know, but I usually get a result when I'm more persistent than a normal human would be willing to

tulip shale Jul 11, 2019, 6:17 AM

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not saying its a good thing, just what i do

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well, persistence is a good thing but... well itd take most of the people in this channel like 5 minutes to make a randomly roaming ai from scratch. at some point, experience and memory is better than being stubborn

ocean sleet Jul 11, 2019, 6:18 AM

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It has not failed me in three years

tulip shale Jul 11, 2019, 6:18 AM

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practice makes perfect is a very inaccurate thing people say. you can practice wrong

ocean sleet Jul 11, 2019, 6:18 AM

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Persistence got me this PFP

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Which again, Your PC could crash if You tried to open the blend file.

tulip shale Jul 11, 2019, 6:19 AM

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the gas mask?

ocean sleet Jul 11, 2019, 6:19 AM

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yes

tulip shale Jul 11, 2019, 6:19 AM

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no pc should crash trying to open something that looks so simple

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that means its poorly designed

ocean sleet Jul 11, 2019, 6:19 AM

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Grease Pencil is based on vertices

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So... The number is insane

tulip shale Jul 11, 2019, 6:19 AM

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why would u make it entirely in grease pencil then

ocean sleet Jul 11, 2019, 6:20 AM

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because in grease pencil, You can animate it

tulip shale Jul 11, 2019, 6:20 AM

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geometry is much easier, plus theres tons of other programs to make 2d stuff with

ocean sleet Jul 11, 2019, 6:20 AM

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easily, I might add

tulip shale Jul 11, 2019, 6:20 AM

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well u can animate geometry too its kind of the basis of every game engine

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or morph targets if u dont like to rig

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shape keys whatever ppl call em

ocean sleet Jul 11, 2019, 6:20 AM

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I usually just rig

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It's not the best, but it works for Source engine

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I feel like I defeat the personal goal of minimalism with my persistence and workflow

tulip shale Jul 11, 2019, 6:22 AM

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for a render it doesnt matter much but for real time gameplay, u want it to look complicated but be as simple as possible, so it runs well

ocean sleet Jul 11, 2019, 6:23 AM

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I could use this PFP as a logo, and no one would ever know the absolute shit show that ran behind it

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It's kinda like Treyarch

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"It works, so it's fine"

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I can't tell if You've even snickered at a thing I've said in the past three hours

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Cause, I've said a lot of shit that was meant to be funny to some degree

tulip shale Jul 11, 2019, 6:25 AM

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well ive been more focused on trying to fix problems

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and the, it works so its fine... sometimes its ok but other times.... i feel like shortcuts can ruin entire games for what would be 10 minutes to fix

ocean sleet Jul 11, 2019, 6:26 AM

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Again; sounds like Treyarch

tulip shale Jul 11, 2019, 6:26 AM

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well, theyve made more money and put more products in stores than i ever will so theres something to it

ocean sleet Jul 11, 2019, 6:27 AM

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They took a 180 turn in the past six years

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They can eat shit for making the past two Black Ops games

tulip shale Jul 11, 2019, 6:28 AM

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i think the last one i played was world at war. CoD1 was good though back in the day

ocean sleet Jul 11, 2019, 6:29 AM

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BO2 was the last good one, but only the zombies

tulip shale Jul 11, 2019, 6:29 AM

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ive lost interest in shooters anyway though. its always weird to me how ur arms are coming out of ur head... or ur 3 feet taller than everyone else and the camera is in ur chest. dunno

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i mean, i dunno about u but... my bullets come out of my helmet

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anywho, it is getting late and its 91 degrees in my room here so... im gonna go before i die

ocean sleet Jul 11, 2019, 6:30 AM

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Idk, I always thought multiplayer sucked

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I only really play zombie shooters for shooters

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Yeah, its 4AM almost here, I dont have much time left

tulip shale Jul 11, 2019, 6:31 AM

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i still got a lot of stuff to do around the house. would like to get it done before the sun comes up

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either way, at least ur ai thing works... somewhere. maybe not in ur original project but its at least progress, u know where the gap is

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just remember, simple tasks can go a long way. if it ends up being a huge tangled thing, someone here might be able to cut it down and work better

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good luck with stuff, prolly see me say some stupid stuff in here sooner than later~

glad jewel Jul 11, 2019, 12:57 PM

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Hey guys, can someone help me with the "Does path exist" BehaviourTree decorator? It always returns false, even for a path that definately exists.

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I know the path exists because a "Move to" Node will work, and the actor will walk there. But if I add a 'Does path exist' decorator, it will return false.

static crater Jul 11, 2019, 2:23 PM

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hi, tried this tutorial by rama to make custom path finding, but setting cost to 0.5 wont let my ai preffer to use the path?

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https://wiki.unrealengine.com/AI_Custom_Pathing,_How_To_Use_Nav_Modifiers_Query_Filters

AI Custom Pathing, How To Use Nav Modifiers Query Filters

flint trail Jul 11, 2019, 5:01 PM

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@timid island @supple tree @tardy scarab So I am wondering if there are any new AI goodies coming with 4.23 😊

flint trail Jul 11, 2019, 5:36 PM

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🤔

pine steeple Jul 11, 2019, 7:05 PM

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nope

flint trail Jul 11, 2019, 7:35 PM

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AI seems to be the most stagnant part of UE4 :/

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(also goes for training materials/streams about UE4's AI)

ocean sleet Jul 11, 2019, 8:27 PM

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📎 Screenshot_1611.png

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So when it sees the player it's supposed to move toward them, but it instead of moving toward the player, just finishes and it defaults back to a picking a random location to move to

pine steeple Jul 11, 2019, 9:12 PM

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if player location is invalid

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then where can it move to?

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if player location is invalid

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then where can it move to?

ocean sleet Jul 11, 2019, 9:23 PM

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Actually, it does begin to change course, but it changes before it reaches

ocean sleet Jul 11, 2019, 9:42 PM

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Alright, fuckin tutorial said to getactorlocation and connect the vector to getrandompointinnavigableradius. deleted getrandompoint and it works fine

tardy scarab Jul 11, 2019, 9:54 PM

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@flint trail Sorry I forgot to respond last time you mentioned me. I'll get back to you once I get a chance to read the full release notes.

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@flint trail I'll be having Wes Bunn on the stream in two weeks with AI!

flint trail Jul 11, 2019, 10:53 PM

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@tardy scarab thanks.. Any chance we can submit suggestions for AI stream ? 😊

ocean sleet Jul 11, 2019, 11:00 PM

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blueprint runtime error: "accessed none trying to read property CallFunc_GetPlayerCharacter_ReturnValue"

📎 Screenshot_1617.png

thorny gyro Jul 11, 2019, 11:25 PM

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you should make sure the return from get player character is valid otherwise return failed on the finish execute. The task might be running before the player is spawned or if they are dead for example.

ocean sleet Jul 11, 2019, 11:29 PM

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I think it's that auto possessing the player doesn't work anymore. the settings aren't doing it on start since I changed graphics settings (for some reason)

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But that doesn't really make sense, since it begins chasing the player right away

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Before I even posses it

lyric flint Jul 12, 2019, 11:27 AM

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gameplay debugger broken ? EnableGDT doesnt work

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or why does VisLog only show one instance of any BTTask, despite numerous ai running around ?

lyric flint Jul 12, 2019, 12:55 PM

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im convinced theres something wrong with behavior trees

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have more then 1 ai and nothing works the same way

lyric flint Jul 12, 2019, 1:13 PM

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THERES A FINISH ABORT

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I DINT KNOW THERE WAS A FINISH ABORT OH MY GOD

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I DINT KNOW

📎 unknown.png

analog crown Jul 12, 2019, 1:27 PM

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Anyone doing AI in 4.22.3?

lyric flint Jul 12, 2019, 2:12 PM

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yea.. at least attempting to

lyric flint Jul 12, 2019, 2:52 PM

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really wish there was more documentation. i learned that VisLog in BehaviorTree nodes need a RedirectVisLog called for their playercontroller owner or only one instance will show up in vislog window (multiple ai's) and that Abort event needs FinishAbort called or else...

patent hornet Jul 12, 2019, 3:14 PM

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all tasks have to be finished in order to well... finish

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😄

analog crown Jul 12, 2019, 5:20 PM

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for some reason my behavior tree is stuck on the "Root" indefinitely

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got a job posting up for the issue if anyone's interested in taking a crack at it

pine steeple Jul 12, 2019, 7:53 PM

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@analog crown pm me

tulip shale Jul 13, 2019, 9:05 PM

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so is there a way to use the ai perception more... in the BT itself? or is it typically handled in the ai controller?

lyric flint Jul 14, 2019, 7:40 AM

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you can use it in bt aswell but sometimes it's best to set some bb vlues from events outside the BT if you want to have instamnt updates wihtout having to tick it on a service; ok but anyway to the question; by dragging a node from the owner controller then getting component by class and then you have access to the ai perception inside a service or task @tulip shale

lyric flint Jul 14, 2019, 9:50 AM

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how do i make it so when my AI here hears a noise, he does a function (i already have it setup)

📎 unknown.png

reef birch Jul 14, 2019, 7:11 PM

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im not sure

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but there was somethinng with ai perception stimulans

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u can assign on a actor

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and enable hearing

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maybe check some tutorials

vagrant summit Jul 15, 2019, 1:14 AM

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I am convinced the AI Move To (blackboard not BP) just doesn't work

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Spent several 8 hour days double checking my shit

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and the BP Version works fine.

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https://streamable.com/zgxkm

Streamable

iGBeNnphS5.mp4 - Streamable

▶ Play video

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the only time Moving the pawn works more than once, is when i do it with a BP MoveTo (in a custom task)

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The default Move To task is just bugged

cinder rock Jul 15, 2019, 10:30 AM

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can someone exaplain to me, why DrawDebugSphere in BehaviourTask doesnt work? duration is set to 10 seconds

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thnx

pine steeple Jul 15, 2019, 3:21 PM

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BT's dont have a world context

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you need to supply one

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so drag from owning actor to the world context pin

tulip shale Jul 15, 2019, 4:15 PM

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so if i wanted an ai to attack when its in range... (stab or something) i have some tasks and it seems to work, but i was thinking about it and theres like a billion ways to do it. i could have it play a montage in a task, from the controller, from the character, from the weapon itself... wheres the best place to handle it so that it knows when the animation is playing so it doesnt keep restarting it? i mean the animation could set a bool on start and end of anim as a blackboard condition but that doesnt matter where it is really

flint trail Jul 15, 2019, 6:35 PM

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@tardy scarab by chance, were you able to finding anything interesting about AI in 4.23 ?

tardy scarab Jul 15, 2019, 9:32 PM

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@flint trail As of yet, unfortunately not

flint trail Jul 15, 2019, 9:32 PM

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😦

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ok, thanks

fiery sorrel Jul 15, 2019, 10:36 PM

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Is there a way to modifiy a nav area cost at runtime?

Looking to extend nav links based on the number of moving agents on it.

lyric flint Jul 16, 2019, 12:04 AM

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anyone else had isses with Aicontroller>Blackboard>SetValueAsVector?

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can'tgetit to update it's value from outside the blackboard

lyric flint Jul 16, 2019, 1:29 AM

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solved it, by some reason unreal won't pass the default value of a name variable through the Send Noise Report node

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you have to set it in teh graph, weird. Anyways it's solved

tulip shale Jul 16, 2019, 2:38 AM

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is there some sort of sorcery required to make an ai play an animation?

vital pond Jul 16, 2019, 6:37 AM

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Would anyone know why my large AI actors cant navigate?

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When I set them to a scale larger than 1 they lose the ability to navigate

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or at least seem to stop trying to wander

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When I set them to a scale of 1 they can navigate again

night relic Jul 16, 2019, 10:17 AM

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About Behavior trees, if you update the destination vector of a MoveTo node while it's running, isn't the AI supposed to move to the updated value?

jaunty peak Jul 16, 2019, 10:25 AM

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Off the top of my head, you'd have to abort that part of the tree.

night relic Jul 16, 2019, 10:29 AM

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it seems so

vital pond Jul 16, 2019, 11:15 AM

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How are giant characters normally done, is it normal that they can't navigate when simply scaled large?

vital pond Jul 16, 2019, 12:15 PM

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I've got this giant chicken creature i'm working on but for some reason its unable to do any MoveTo actions at a past a certain size

📎 Sj4Ko9N.png

vast jacinth Jul 16, 2019, 1:16 PM

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@vital pond That has to do with Nav Agent Radius. You set the maximum for navmesh in project settings. For various sizes you'd set several supported agents. Breakpoints of sorts. You want to keep the number of agents low, as each supported agent will add a new recast navmesh into the level.

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if it's not clear: your character stops responding to MoveTo at certain scale, because its radius is larger than the maximum set for the nav mesh volume in your level.

flint trail Jul 16, 2019, 3:16 PM

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I am using 4.22.2, streaming levels (each has it's own Nav bounds) and ProjectPointToNavigation. ProjectPointToNavigation for the most part returns correct coordinates (and True bool), however, sometimes in some spots it returns 0,0,0 and False bool. I can see that trace hits those spots on static meshes (floor), nav mesh is drawn over those spots, but somehow ProjectPointToNavigation fails. Any idea why it could happen ?

flint trail Jul 16, 2019, 4:33 PM

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no one? :/

wary ivy Jul 16, 2019, 5:16 PM

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what kind of extents are you using for projection?

flint trail Jul 16, 2019, 5:26 PM

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28, 28, 100

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@wary ivy ^^

wary ivy Jul 16, 2019, 5:28 PM

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are you sure that's enough for from where you are projecting?

flint trail Jul 16, 2019, 5:31 PM

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how'd I determine what would be enough and what's not enough ?

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@wary ivy ^^

wary ivy Jul 16, 2019, 5:36 PM

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well, the extents you wrote is 100 units on Z axis, right?

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so on some XY coordinate, if you project a point at 0,0,200 and the navmesh below is further than 100 units then the project fails

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because the max extent is 100

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like if the navmesh below is at 0 Z

vital pond Jul 16, 2019, 5:38 PM

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@vast jacinth So basically I just need a new agent set to a larger scale than the character in project settings right?

vast jacinth Jul 16, 2019, 5:41 PM

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@vital pond You need a new supported type of an agent. Look for Navigation system in project settings. You will have 2 supported agent types in the project settings. One for the default size, one for your big sized pawns/characters/agents. Unreal will automatically create 2 recasts once you play/refresh the editor (move navmesh bounds volume for example).

flint trail Jul 16, 2019, 5:41 PM

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@wary ivy well, the way it looks in the Editor is navmesh is at the same distance from the floor in the point where ProjectPointToNavigation fails as the nearest point where ProjectPointToNavigation succeeds. I assume that bounds are max bounds where nav mesh should be between 0 (floor mesh) and 100 ?

wary ivy Jul 16, 2019, 5:43 PM

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I think it's the max distance to navmesh on the given axis, so with 100 Z extent it would look up and down 100 units from the projection point

flint trail Jul 16, 2019, 5:44 PM

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I see

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I guess I can play with Z and see if it makes any difference.

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I have a feeling it won't make any difference though

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(it's a flat area in parts of which ProjectPointToNavigation fails and in other parts it succeeds, so I don't see how nav mesh can be above/below 100 units from the trace hit point)

wary ivy Jul 16, 2019, 5:48 PM

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yea I encountered a similar issue a while ago

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no idea what caused it

flint trail Jul 16, 2019, 5:50 PM

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how did you work around it @wary ivy ?

wary ivy Jul 16, 2019, 5:50 PM

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I don't remember

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try changing the navmesh settings

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tile sizes and such

noble vault Jul 16, 2019, 6:45 PM

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One question, i am a newbei in UE4, i am making my final degree project.

I need to setup a city with and automatic traffic flow, but i dont know the best way to create this AI, can someone give me some extra info?

I googled but did not worked....

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BTW this is the right channel for this question?

lyric flint Jul 16, 2019, 7:05 PM

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Firstly, have you put thought into how you would achieve this, like building a mind map over what is needed

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that is the first step to any ai I say, but at basic ai these mind maps might not be so large it works, and for your project it would greatly help wiht having a rough plan thought out

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I do mind maps with pseudo code before a project, it is a great help

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@noble vault

wary ivy Jul 16, 2019, 7:30 PM

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why are you making a final degree work about something that you're not familiar with?

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sounds needlessly difficult

noble vault Jul 16, 2019, 7:35 PM

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i am not familiar with ue4, i am with programming, i am making it in ue to make it more visible and beauty

noble vault Jul 16, 2019, 8:01 PM

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@lyric flint what is a mind map?

My ideal is to make a small/medium and big city, with traffic (cars) and traffic lights, then if they are working properly i am able to work with my project

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i googled mind map but nothing came (i am spanish, and i dont know if i missunderstood what you mean)

vital pond Jul 16, 2019, 8:21 PM

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@vast jacinth Sorry for the tag, just want to make sure i'm doing this right

📎 unknown.png

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woops

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here

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📎 OGVOCXB.png

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Made this second nav mesh agent with a height that's double the capsule half-height and a radius that is the same as the character's capsule

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anything else I'd need to do?

vast jacinth Jul 16, 2019, 10:00 PM

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@vital pond Try and see 😃 Don't forget you can see the navmesh inside the editor by hitting 'P' or going to the top-left corner of the viewport and toggling navigation from the Show submenu. When you make the colour in your 'Giant" agent other than the default you'll be able to differentiate between the two.

vital pond Jul 16, 2019, 10:02 PM

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Thanks

vast jacinth Jul 16, 2019, 10:02 PM

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As for 'doing it right'. This was a recommended approach by the programmer behind the AI, but it really really depends on your project whether it's the way it works for you. Personally don't have as much experience to be able to tell you this will work 100% 😃

vital pond Jul 16, 2019, 10:02 PM

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ah right

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I just set "giant" to yellow but I can't see it in the viewport

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made a nav mesh that only recognizes giant

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so I guess there's one more step

vast jacinth Jul 16, 2019, 10:03 PM

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not sure on that. Last thing on AI in unreal from what I've seen is that it seems buggy half the time and only sometimes it is, the other it's a hidden setting somewhere

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try even restarting the engine (dont forget to save all 😃

vital pond Jul 16, 2019, 10:05 PM

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Right

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thanks for being so helpful by the way

vital pond Jul 16, 2019, 10:29 PM

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its just odd since my other project in .19 has no issue with scaling actors up

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i guess if i run out of options I could just make all the actors small

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Still not working otherwise

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I'll ask in blueprints just in case

vital pond Jul 17, 2019, 12:48 AM

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@vast jacinth i got it working