blueprint

[remote meteor]

a character has these by default

[lament karma]

I have a student who is trying to pass information from one widget to another. Does anyone know how to accomplish this?

[onyx token]

[remote meteor]

you can add your skeletal mesh to the CharacterMesh0

[onyx token]

i literally spent like 6 hours total

on this fucking bug

[gentle urchin]

Many ways. In what context? Drag and drop? Just two random widgets needing to communicate

[remote meteor]

you are essentially now creating a prefab of a walking character that consist of other stuff

[dark heron]

awesome

I linked the mesh now

[remote meteor]

you can adjust it within the viewport

[dark heron]

yeah

[remote meteor]

then in your class default

there are these option

[dark heron]

Where can I find that?

[remote meteor]

im still in ue4 so might look different 😅

[lament karma]

She just needs to pass a boolean variable from one widget to another. It is a point and click style game. She is trying to do it through the Player Controller because there is no Player Character. I'm not sure if that makes a difference.

[remote meteor]

try search for class defaults

[dark heron]

Got it, thanks!

[remote meteor]

on your details panel you should be able to find it

[gentle urchin]

Like a puzzle kinda thing?

[dark heron]

I see the ai controller class now

[gentle urchin]

Knowing if one pressed A before B?

[remote meteor]

by default, it will be possessed by an empty AI Controller

yeah

so if you want to add your own thing to the controller

[dark heron]

Hmm not seeing anything custom

[remote meteor]

such as codes that controls the behavior tree and blackboard

you need to create them first

back to the content browser

create a new ai controller

[lament karma]

Kind of. If something has happened in one widget, it determines what is allowed to happen in another. It's pretty simple, but I'm not sure how to do it yet and she has been trying to figure it out for a long time.

[remote meteor]

there are 2 other types of ai controller, but we will go for the usual one first

[dark heron]

Got it

the dropdown wasn't expanded before

[gentle urchin]

Could sound like it should be handled in the controller (or whatever game state tracker in use). Like a map of contextual data, where any widget can read it from the playercontroller

[dark heron]

The player now uses the new controller as the AI Controller Class

[remote meteor]

so when you see this 2 option, the first one says "when should i be AI possessed"
second one says "Which AI controller should i be possessed by?"

[lament karma]

My student is back. She is going to jump in and take it from here.

[remote meteor]

then now you can setup the links

[lament karma]

Thank you!

[dark heron]

So it's all linked up now I believe - I just need to create a variable to store the other player I think

[obtuse herald]

You need a reference to the other widget to communicate with it. Your student probably stores the widget references inside the controller, so it should be something like this:
GetPlayerController -> Cast to (Player Controller Here) -> Get (My Widget Variable Here). But it's probably better to handle such stuff centralized inside the player controller .

[dark heron]

Also I'm saving this conversation for later - it's been incredibly helpful ❤️

[zealous moth]

is there a way i can trigger ragdolling in editor?

[wise crescent]

Hi ! Actual student here : ) I’ve got that, I’m about to send a screenshot. I’m not getting any errors or anything, it just isn’t working?

[gentle urchin]

If you're checking validity of the widget, and not handling invalid, this may be the reason why its not working, and not throwing errors

[obtuse herald]

Yeah, also if you are casting make sure the cast succeeds

[gentle urchin]

Or toss yourself a bone (print string) if it doesnt

Good practice

Good practice

[wise crescent]

So this is what I’ve got:

[obtuse herald]

print a string after Cast Failed and after False to check if the code actually gets executed

[gentle urchin]

Also be carefull with naming classes and variables :) overlapping or undetermined naming is gonna bite you in the behind later on

[wise crescent]

Gotcha, trying now

[gentle urchin]

Controller is super vague, along with VeggieCheck doesnt really say anything about the expected result and what it implies

[dark heron]

Is there a way to set a blueprint class' instance variable in the details window?

Or is that not how it works

[remote meteor]

you make it instance editable

[obtuse herald]

True, there is already an engine class named Controller (technically AController)

[dark heron]

Did that, not sure where to look to set the variable

[gentle urchin]

In the editor, with the actor instance selected

In the details panel

[wise crescent]

Oh ok ! Thank you ! So the cast is indeed failing.

[dark heron]

which category is it in?

[gentle urchin]

Whichever you put it in

[dark heron]

Currently default

[obtuse herald]

First try renaming your player controller to something not sounding like an engine class (like MyPlayerControllor). Second make sure your player controller actually gets used instead of the default one.

[remote meteor]

you create your own variable

then tick the eyes or instance editable

[dark heron]

On my player controller, I have this variable:

I have it set to instance editable

I have it set to instance editable

But I don't see it anywhere

[gritty elm]

how to predict project path to specific actor?

[remote meteor]

it has to be in the character first

the character is the one that is in the level designer

[dark heron]

Yeah

I'm looking here

[gentle urchin]

Playercontroller is spawned at runtime

[wise crescent]

Ok so I renamed it & made sure it was being used. I ran the code again & the cast doesn’t seem to be failing, but it’s also not conducting the following code.

[gentle urchin]

So the instance variable is not editable

[dark heron]

I see. Not sure what the proper solution is then

[gentle urchin]

Does it run false on the branch?

[remote meteor]

you expose the variable on the TagPlayer first

[dark heron]

Yeah that's where the variable is

[remote meteor]

then TagPlayer will pass it along to its controller

[dark heron]

by controller I meant the whole controller, not the ai controller

[remote meteor]

it should be under default, by default

[wise crescent]

It seems to, but the Boolean variable that it checks for in the branch is set to true. It shouldn’t be running false.

[dark heron]

if I search for it, nothing shows up

even under All

[wise crescent]

It seems to, but the Boolean variable that it checks for in the branch is set to true. It shouldn’t be running false.

[remote meteor]

this is in TagPlayer right?

[dark heron]

yeah

[remote meteor]

🤔

[gentle urchin]

Yet it does ;p are you sure its true

[remote meteor]

try dragging the tag player into the level designer again

[gentle urchin]

It says its dalse

I tend to believe the code, not the coder

[obtuse herald]

print a string after true aswell

[dark heron]

new one doesn't have the variable either

[wise crescent]

It’s definitely possible that it’s just me because I’m new to Unreal, but the variable gets set to true in the widget that the variable belongs to. I know the code in that widget runs so it should be setting it to true.

[dark heron]

I can probably take it from here as I have to head out for now. Thanks for the help everyone!

[golden frigate]

ive got this for blending per bone im trying to do an anim montage on left and right arm independently

but if i play my left arm montage (which does not blend out so the arm stays in final position), then i play right arm montage later, it resets the left arm

any way around that?

[gentle urchin]

tbh i'd try to structure this a little differently anyways

something like this in the playercontroller

the veggie widget would then do something like this ;

(I have it set to toggle, but whatever makes sense for you ofcourse)

this way you can generically pass in conditions to the playercontroller, with their state (true/false in the example)

[gritty elm]

how to predict projectile path to specific actor?. for example it start from player and end at specific at location

[obtuse herald]

(it's better to use Name instead of String for such things (case insensitive and optimized for comparison))

[gentle urchin]

I'd probably suggest gameplaytags really, but yes, you have a point 🙂

[wise crescent]

Thank you so much for you guys’ help! I’ll restructure it! You guys are so patient, thank you : D

[gritty elm]

Thanks!

does this works with one actor to other actor?

[remote meteor]

you can just use their ActorLocation for the start and end location

[gentle urchin]

I'd probably also use an event dispatcher so that i can get an event call whenever UI needs updating
just a mockup of how it could be done

[gritty elm]

like this?

[remote meteor]

thats a huge radius for a projectile 😅

also specify a launch speed

[dark heron]

@remote meteor the issue was simple - I never compiled

[cyan bone]

Oh i see. But thats not my case. I only have world location of points. And i need to Add text render in those points that are world. They are not related to my actor though. They a vectors calculated for destinations.

[remote meteor]

spawn a few actor with text render i guess

[gentle urchin]

sounds more like something that belongs to some UI element/map thing

but i guess some prefer them in world

[cold dragon]

how can i edit GameMode Blueprint ? It opens blank

[last abyss]

at the top, click on window and add the windows back

like blueprint, details, toolbar, etc.

[cold dragon]

got it, thanks

[modest monolith]

Hello, I am trying to implement a power up that makes me break certain obstacles, i'm using apex destroyer plugin. I created the power up but my blocks breaks in any case unless I remove the collisions.. also.. how can I do that the block doesn't kill me if i'm hitting the destroyable obstacle?
Sine the obstacle is a child of Obstacle_Base it kills me even if i have the buff and i destroy it
Whatever collision and settings I put
I can't manage to get a combination where the obstacle doesn't break and it stays rigid when I don't have the buff
and it breaks when I have it
and doesn't kill me
Can I remove the child actor obstacle mesh since I have the destroyable one ?
I don't need it

How can I say to the game: Okay if you bump into obstacle_base then die... but if the child of obstacle_base is destroyable, then die unless you have the buff to destroy stuff

?

[dusk cave]

should DestroyActor work with StaticMeshComponent?

[gentle urchin]

No

Sorta in the name

DestroyActor

Theres another one for destroy component

[dawn gazelle]

No. A component is something added to an Actor. You want DestroyComponent

[gentle urchin]

Jk

[dawn gazelle]

Yea ._.

I was verifying in the editor XD

[gentle urchin]

😂 i took a gamble, rolled the dice!

[modest monolith]

._.

[modest monolith]

Ok sorry for asking

[gentle urchin]

Not familiar with your issue, sorry

Havnt used apex destroyer at all

[cyan birch]

It may take some time for someone familiar with that type of issue to see your message. Just because someone is answered after you doesn't mean you were ignored, it means people knew the answer to the next question, not yours.

[foggy escarp]

I'm not familiar with your game and why your character is dying, but if it's the hit result that's doing it and you still want to be able to overlap to collect the power up, then using overlap collision respons for character may be the fix.

You could also override the parent event/function that's killing your character.

[modest monolith]

I explained my self very bad

Basically i'm making an endless runner

and of course if i hit an Obstacle I die.. However, certain obstacles are destroyable with a powerup that we will call "hammer"

But my Destroyable obstacle is a child of obstacle_base so also the other obstacles that are not destroyable

So I would need to do that if I hit an obstacle my character will recognize if it is a normal obstacle or a destroyable

if it's a destroyable and i have the hammer it will break

I'm trying to do that when I hit I apply damage of 1

and i set the mesh with 1 hp

but seems to not die

[desert juniper]

this is all so cunfusing. but I think you already answered your own question

How can I say to the game: Okay if you bump into obstacle_base then die... but if the child of obstacle_base is destroyable, then die unless you have the buff to destroy stuff

literally just do that

when collision is detected, simply check to see if it is destroyable

then do whatever actions you want

[modest monolith]

How???

[desert juniper]

oof

[modest monolith]

I can't put an object reference as a boolean condition lol

how can I tell to the branch "hey if this is A do this"

[foggy escarp]

Cast to your character and check if it has the status your looking for

[modest monolith]

I don't need to cast to my character

[foggy escarp]

Then just use a branch

[modest monolith]

Which status ?

the buff you mean ?

[foggy escarp]

^

[desert juniper]

https://dev.epicgames.com/community/learning

[gentle urchin]

Im imagining super mario

With star buff

[obtuse herald]

cast Other Actor to Destroyable Obstacle (or however you called the child class). If the cast succeeds it is a destroyable obstacle. If it fails it's something else.

[modest monolith]

But destroyable obst is a child of obstacle base

so the cast would succeed even if it's not the destroyable

am i wrong ?

[paper galleon]

Yes

[modest monolith]

So it won't work

[paper galleon]

It would ONLY succeed if it is a destroyable so you're wrong in assuming that it would if it isn't

[modest monolith]

ok so I can cancel obstacle base cast and just link the cast failed for it ?

[paper galleon]

Do this

[modest monolith]

Ok

[paper galleon]

You want only the destroyable to respond to the event, no?

[modest monolith]

Well

With normal obstacle the player just dies

[paper galleon]

Then cast from the other actor in the hit result to a destroyable.

[obtuse herald]

wait I'll start my engine to send you a screenshot

[paper galleon]

This is another event. I'm referring specifically to the hit event

Have you used any tutorials or learning resources?
You need a few more lessons.
We can help as best as we can here but you'd need to learn a bit more so that our solutions make more sense.

[obtuse herald]

😔

[modest monolith]

You mean drag the other actor pin?

[paper galleon]

Yes.

😐

[modest monolith]

Ok now I try to cancel obstacle_Base and use only destroyable with cast failed

[paper galleon]

Why cast failed?

[near glen]

Hey people! Can you hint me on some courses or tutorials about implementing something like modular vehicle editing in any way, where player can build his own for example ship, base e.t.c. For example games like Avorion, Interstellar rift, Stormworks

[paper galleon]

Hmm.. this is a tall order.

It's like the tutorial for some full games

[near glen]

well yeah maybe, but it's just a mechanic of a game...

[modest monolith]

https://tenor.com/view/amirite-hadesdisney-hades-gif-5584633

[obtuse herald]

what's wrong?

[modest monolith]

What do you think about mine ?

XD

[paper galleon]

If you want modular building there's a bunch of YouTube tutorials. Any one of them should do. Just type in the words.
You need the knowledge of how it works anyways not the exact implementation imo.

[modest monolith]

Ah amazing

I tried mine

and I die as soon as I touch the floor

XDDD

[obtuse herald]

You'll die hitting anythig

yea

[modest monolith]

XDDD

I try yours

[gaunt viper]

Indeed, I ended up starting from scratch, about to try again

[near glen]

yeah I mean that, but I just cannot find something on youtube by that searches, why I'm asking it here

[paper galleon]

Hmm weird. Lemme search if I can find one for you

[modest monolith]

https://tenor.com/view/amirite-hadesdisney-hades-gif-5584633

Eheh

what do you think

[near glen]

ah, found some by "base building"

[obtuse herald]

should work

[modest monolith]

I think I have some really serious problem of coding

[obtuse herald]

If you want to know more about casting, check this guide out:
https://docs.google.com/document/d/17bEGQEC1_G5KQKAI3_ixbe4S0BIulEH5w4qS9b7fuqc/edit
(it's from Datura iirc)

[modest monolith]

This child class is giving me many problems

how can i remove an inherited component ?

[paper galleon]

Great.

[obtuse herald]

you can't

[paper galleon]

You can't. It's inherited. You may be able to destroy it at runtime though. But not in the editor

[modest monolith]

ok

I mean i think it collides and creates problemm

because even if I am iron skinned sometimes I die hitting the stuff

[paper galleon]

Just create another actor class without that particular component

Ez pz

[modest monolith]

Yes but...

[paper galleon]

?

[modest monolith]

All my obstacles are randomly spawned

[obtuse herald]

make a base obstacle class with no mesh. create 2 child classes. 1 is destructible. 1 is not.

[modest monolith]

My obstacles spawner spawns all obstacle_base in the map

[modest monolith]

Will I delete all the obstacles already made ?

I mean their meshes ?

[obtuse herald]

I don't know what you mean exactly

[modest monolith]

I mean

I have already 5-10 obstacles made from obstacle_Base

with the inherited mesh

if I delete the parent component

will I open a dark hole

[paper galleon]

Seriously, learn a few more things rather than trying to implement something.
It seems like you're trying to brute force a solution to one particular problem.

[modest monolith]

that will suck all my game

in another dimension

[obtuse herald]

yeah you would need to redo those

I don't think reparenting will help you there

[modest monolith]

Because i see that when I delete the parent mesh and compile

I receive this

[obtuse herald]

that is correct

[modest monolith]

Oh I have an idea

I'll duplicate all of them

and then just replace

[kindred remnant]

I've downloaded a character and it's animations off Mixamo, however I can't seem to make this the player character. Does anyone know how to do this? https://gyazo.com/76b4e5cf2aaa0b9df0d1ff6cf618ec10 I also assume there's others steps to actually link up these animations as well to controls, isn't there?

[paper galleon]

You just imported into the engine and did nothing else?

You'd need to create a character class and set the skeletal mesh to be this mixamo character that you imported.

[kindred remnant]

I should preface that i'm a Sound Designer fudging my way through UE5 to try and make some sound implementation demos. I've followed a tut and set up a retargeter but that doesn't seem to have done much.

Ahhhh okay, thank you

[paper galleon]

If you want the mixamo character to use the mannequin animations in the engine, you need to take extra steps to convert the mixamo character to a ue skeleton.

I'd suggest you use YouTube for that as it's a bit complex

[paper galleon]

Oh you already retargeted 😅

[kindred remnant]

Yeeeee I just don't know what i'm doing hahahahaha

[vast widget]

Some of these steps may be different, but the general gist should still be the same: https://www.youtube.com/watch?v=92rag3qStI4

[paper galleon]

Ah perfect

[kindred remnant]

Ahhhh thank you so much to you both!

[vast widget]

You'll probably have better luck in your google searching if you look for UE4 vs UE5

most of the tutorials haven't been remade

[kindred remnant]

All I want is a dude with a sword so I can test out some physics stuff using Wwise, this should have been the "easy" part LUL

Ahhhh yeah that's very true, thank you

[paper galleon]

It probably is. Lol

The easy part...

[kindred remnant]

Yeah, believe it or not i'm quite comfortable with Wwise and Unreal! It's just these beginning steps i've never done, as the levels I work on are usually sorted prior to that point hahaha

[paper galleon]

You still need to create a custom character and set it as the default pawn class

[kindred remnant]

So i've created a Player Character, what am I doing with it btw?

[paper galleon]

The artist, got it. 😆

[kindred remnant]

YEP😂

[modest monolith]

How can I find other documents like these ?

unreal documentation says real basic stuff

[vast widget]

Not to be rude

but that is fairly basic

[paper galleon]

Go to the world settings in the main editor it's in one of the tabs. Look for the default pawn class drop-down and set it to the character you just created

[kindred remnant]

to me?

[vast widget]

no

That was to Goro

[kindred remnant]

Ahh yep! got it

[modest monolith]

I know but less basic that unreal documentation that says "This button does this.. bye "

[vast widget]

Oh

you're reading the API Docs

not the actual documentation

yeah, that stuff is garbo lol

[obtuse herald]

This guide was from someone of this community. But UE Docs should generally do just fine.

[vast widget]

the actual docs on specific topics are mostly good

[modest monolith]

Thank you

[paper galleon]

Mostly

Lol

[vast widget]

the UE Docs should be your jumping point to search for more info if you can't find anything, you can always ask here

[obtuse herald]

The docs for specific nodes on the other hand are a bit.. slim

[vast widget]

but there's also the community wiki

[paper galleon]

That thing is actually quite elusive to me

[vast widget]

ie: https://unrealcommunity.wiki/

[paper galleon]

Bookmarking this

Probably don't need it again tho

[vast widget]

Most of them are just BP accessor to C++ functions which are fairly self explanatory when you read them (usually) or have comments in code.

They could be better for BP only folks

[obtuse herald]

Yeah I know, the doc itself just doesn't really help at all most of the time.

Would be cool if they at least included a github link to the source of the node.

[vast widget]

if you have source code downloaded, you can just doubleclick the node

and it'll open in your IDE

[obtuse herald]

You need debug symbols as well

[vast widget]

Should only need source code

I usually run a source build though, so I could be wrong

[obtuse herald]

It doesn't work for me and I only have the source code

[paper galleon]

Used to work then it didn't anymore.
It was between engine versions though so maybe I had debug symbols in one and didn't in the other

[obtuse herald]

log says this LogSelectionDetails: Warning: NavigateToFunctionSource: Unable to find symbols for 'UStaticMeshComponent::SetStaticMesh' [Element nicht gefunden.] so I presume I need debug symboles as well

[paper galleon]

But I usually just go to source manually anyways

[obtuse herald]

I would not if I had the possibility tbh

[paper galleon]

Same tbh, but I work primarily in C++ nowadays so the IDE is always open.

[vast widget]

^

[obtuse herald]

If I search manually manually it takes me ages to find something and if I let intellisense search something it navigates me to some weird scuffed function no-one saw for ages half of the time.

[vast widget]

I think you're right about the editor debugging symbols though

that's silly

[obtuse herald]

yeah

[vast widget]

download rider

[obtuse herald]

also 40 gb

[vast widget]

search everywhere using the function name

takes like 2s tops

Intellisense is hot garbo for UE projects

[obtuse herald]

oh yeah it is

[paper galleon]

It doesn't take long to find at all seeing as most BP functions are just wrappers

[zealous fog]

Does the amount of blueprint components an actor has have any impact on anything I should know about? Is there a con to just adding 20 components on an actor for example? Or 50 or whatever number

[modest monolith]

I don't understand why my mesh doesn't destroy on damage

[paper galleon]

Not really but you generally wouldn't add that many. You should probably redesign.
Also if I'm guessing right, those components are similar static meshes. You should use instanced static mesh if that is the case.

[waxen gull]

I am having trouble in finding a method that gives me the ability to get an angle between two vectors: The method i found (Yellow marked) is not exact

[paper galleon]

That is the usual method

[waxen gull]

i get an angle of 70

when i rotate that vector about 90 degrees

[paper galleon]

And you should get ??

[waxen gull]

90

[zealous fog]

No, I mean blueprint components like logic. I saw a video on youtube where they have an AI and make it basically by adding components like "Explode on Death", "Follow player", "Enemy Weapon System" etc

[obtuse herald]

yeah actually maybe I should use ctrl + q instead of ctrl + f to search for such stuff, thanks

[zealous fog]

So it got me wondering, if I just make reuseable components for a lot of things would that negatively impact anything

[paper galleon]

Yeah, same deal. It may or may not hurt performance depending on the logic and if you're ticking all of them.

If the logic is small and not reusable across actors just move it to the actor blueprint.

Emphasis on not reuseable across actors

[zealous fog]

Ofcourse it depends on the logic itself, but would the same logic be less/more/equally performant if its split into components vs in a single BP

Sorry if I was unclear

[paper galleon]

Does your design actually require up to 20 or 50?
I doubt that you would need up to that.
It's all about proper design. If two or more components don't make sense without each other you should combine them into one component.
Things like that. If the component ends up being used in only one actor, move the logic into that actor.

You should also consider interfaces. They're more lightweight.

[paper galleon]

Lol. You're asking follow up questions to my answers even before they land.
Nice.

[waxen gull]

does anybody know how to get an Exact Angle between two vectors ?

[paper galleon]

Sorry. Yeah, that's the method, tbh.

[mellow folio]

Don’t think of components as helping performance, think of them as helping you

If it doesn’t help you, don’t do it

[modest monolith]

Bro this apex destruction is a mess

totally random

[paper galleon]

Also, it's probably too early to worry about performance until it actually slows down your game.

[zealous fog]

That's true, which is why I want to know the pros/cons and performance of them so I know when to use them in my design and when to use something else

[mellow folio]

Putting logic on parent classes is a bit more preferred

[zealous fog]

I'm not worrying about an issue I have right now I just want to understand components better

[mellow folio]

If you don’t understand why to put logic on components, then you shouldn’t do it

[paper galleon]

The performance implications, if you want them explicit is their tick and replication (multiplayer) costs. Turn off tick if you don't need it and if your game is multiplayer only replicate information that is needed.

[mellow folio]

Do what makes sense in your head

[zealous fog]

Which is why I want to understand why

[paper galleon]

Primary use of components is reuseable logic. Simply put. Not to help performance. Just reuseable logic

If many different types of actors need the same logic, use a component

[zealous fog]

Right now I have an inventory component that communicates through an interface with the actor its attached to

[modest monolith]

I DID IT!!!!!!

https://tenor.com/view/hades-hercules-disney-mad-angry-gif-16807168

[paper galleon]

Inventory is a prime candidate for a component

[zealous fog]

But it feels like a lot of steps and that im missing something that makes it more streamlined

I'll show some screens give me a few mins

[mellow folio]

Using an interface to communicate with an attached component probably makes no sense at all because it doesn’t save you anything, you can just interact with the inventory directly

[paper galleon]

Again, do many types of actors need that component, a character, an item like a bag, Enemies, a component is fine.
If you feel like the logic is bloated, take a look at the logic and not the decision to use a component

[mellow folio]

What do you probably want instead, is that objects that interact with inventories can access the inventory component of an object through an interface and then operate on the inventory directly without needing to deal with the actor

[modest monolith]

Ezzzzzzzz

[paper galleon]

Good, now go and actually learn.

It'll save you a lot more time than you think

[trim matrix]

can someone help me with this how can i open again the level editor its been an hour and havent found a way to open it?

[paper galleon]

Don't spam messages across channels
Also, have you checked the "window" tab?

[trim matrix]

sorry i spam cuz no one was answering

yeah and it doesnt work

[obtuse herald]

not the best habbit

[paper galleon]

Someone will eventually answer. You're risking a ban is what I'm saying

[paper galleon]

Really? No viewport option there?
I thought there would be. I don't know for sure btw

[trim matrix]

yeah i fixed it thank you

[paper galleon]

Aiit

[zealous fog]

Okay, so I am making a fast food restaurant simulator, and when an actor is overlapping with a food station this event is called through and interface

In the employee blueprints it will send a message to the component

In the component it gets added to the int of that product

[modest monolith]

Oh can I deactivate collision on chunks created by apex destr?

I mean I've put that after hitting set no collisions

but still it collides

[obtuse herald]

you probably want to set the macros return value to Pass-by-Reference

[paper galleon]

You can eliminate the interface by using a get component function and checking if it's valid

[obtuse herald]

wait nvm

[paper galleon]

If the actor contains that component, all well and good, if not? You check the validity.
Only justification for an interface is if each actor type handles the overlap differently

[modest monolith]

https://tenor.com/view/hercules-hades-thumbs-up-good-great-gif-5148075

[mellow folio]

The purpose of interfaces is to cause objects to not have to have a hard reference to one another. In traditional blueprints, an actor always has a hard reference to his components. Therefore, Sending interface messages to a component inside of an actor is wasted work

[paper galleon]

Also looks like you're calling the interface twice.
Totally unneeded

Once as a message, and another as an event. Both essentially do the same thing.
Slight differences but similar outcomes

[zealous fog]

Just like this then

[zealous fog]

Dont know what this means hehe

[paper galleon]

Eliminate all use of the interface.

You don't need it

[obtuse herald]

yeah no forget that I'm just dumb and will go to bed now lmao

[paper galleon]

From Manning employee, do get component by class and select the staff inventory.

The add product function can be implemented as a normal function within the inventory class.

Or you can even get the component reference manually.

Without using get component by class

The above function is useful when you don't know the type of actor and if it contains that component

Say from a hit result or overlap result

[paper galleon]

Do you know the type of Manning employee? Is it a generic actor or you know if it's a character

[zealous fog]

its a character

[paper galleon]

Like the reference specifically states that it's a character?

[jolly surge]

Is there a way to get more numbers after the decimal point with a vector variable?

[paper galleon]

If so, remove the get component node and simply get the inventory reference

[zealous fog]

Oh no, the variable type is an actor

[runic parrot]

Hi! does anyone know of a way to bypass this?

I already removed all the references i could find and still throws the error

[paper galleon]

Okay, get component is good. Make sure to check the return value is valid.
Add an is valid node. And continue off the true branch

[modest monolith]

You must study more guys

too many questions

[zealous fog]

Should be impossible for the return value to be invalid

[paper galleon]

It may be. The overlap can capture all types of actors.

[zealous fog]

Only becomes manned employee if it is an employee (who always have inventories)

[paper galleon]

Ah.. you have a tagging system.
The check is still useful cause a null reference can crash your game.

[zealous fog]

Fair point

[paper galleon]

It's best practice to handle any exceptions that may occur in your code.

[zealous fog]

😎

[paper galleon]

This can allow you to even remove the initial tag check. Cause only employees will have the component anyways. And for some reason, certain employees may not

[zealous fog]

But then any actor would become the manned emplotee

If it overlaps

[paper galleon]

Probably easier and better ways of doing this but yeah. This is removes the indirection of the interface

[paper galleon]

Okay. So only "people' with the inventory are meant to call those functions not just any actor with the inventory.
Makes sense

[paper galleon]

Looke through your code for anywhere that uses that tag before deleting.

No easy way to bypass.
You can close the editor and manually delete the tag from the GameplayTags.ini file but you'll very likely break your game by the time you restart the editor.

Furthermore, I thought there was an option to rename tags. Hmm, I must be thinking of something else.

[zealous fog]

Because I removed the interface, I now need a way to update the HUD when the event is called in the inventory

Would this be the way to go?

[paper galleon]

The HUD reference, where is it?

[zealous fog]

On the character that the player is controlling

[paper galleon]

Btw, you're still using the interface in the inventory, no need for it

Change that function to a regular member function in the inventory and remove the interface completely.

[zealous fog]

Oh lol woops yeah wrong event

Fixed it

[paper galleon]

The HUD reference is a bit tricky cause I don't want you to cast. But it seems like the way to go.

Only employees have the HUD I presume?

[zealous fog]

Yes, only the player character

[paper galleon]

In the add product function of the inventory. After incrementing the value, get owner and cast to the character class that has the HUD. Get the HUD from the reference and call the relevant function.

You can delete the event dispatcher

The cast automatically handles a null reference so you should be fine

There's negligible performance cost to the cast

The upside to this method is that if the owning actor does not have a HUD, nothing happens

[zealous fog]

Is it wrong to use an event dispatcher?

[paper galleon]

Not really, but again extra complexity.
You have to bind the dispatcher somewhere. Meaning you have to keep track of one more branching point.
It's best to keep the logic as linear and explicit as possible

[burnt canyon]

What is the proper way to rotate a Rotator by something like 180 in one axis

[paper galleon]

Rotate a rotator?
Weird. But you'd usually add 180 to the pitch, yaw, or roll depending on the axis you want.

[zealous fog]

I think an event dispatcher works best since stations themselves also have inventories and will respond differently

But that could ofcourse also be a branch before the cast I suppose

[burnt canyon]

Pretty sure if you do that then the engine will freak out once you pass 360 correct?

[paper galleon]

Do stations have HUD?

[zealous fog]

not HUD, but they do have a widget that displays their inventory

[paper galleon]

Is it different from the HUD class in the character?

[zealous fog]

Yes

This is the character HUD atm

Im just prototyping right now

[paper galleon]

I'm not sure about this. But you can normalise the rotator after to deal with wrap arounds

[paper galleon]

Dispatcher might be better then. As long as you bind them.

[trim matrix]

Isn’t there a node called CombineRotators

Use that

Thought there was also nodes to add rotations as well

To an actor

Like AddLocalRotation? Nodes like that

[zealous fog]

It's funny I'm a manager at a fast food restaurant atm and you'd think I wouldn't want to deal with any more fast food but working on this game actually is a lot of fun

[paper galleon]

It's a nice hobby that actually has the potential to pay out

[zealous fog]

I'm going to school for game design in september

So right now I'm just making games and prototypes

To practise a bit

[paper galleon]

That's a good decision. And that HUD is a lot more than I've done.
I can't actually showcase any of my progress to anyone besides programmers

I'm terrible with UI.

[zealous fog]

Ugh I made a dynamic order system it took me a week and still looks crap lol

[fiery swallow]

Any reason something might not take radial damage, but will take apply damage?

nvm

https://gyazo.com/cad0e40e4aed7d9f31ea746f6111a95d

took a little bit of using my brain

[flat coral]

Okay this question sucks, but I swear to god there was a node like "get look-at rotation" which took an actor's rotation and a location vector, and returned how the actor would have to rotate to look at the point.
Does anyone have any idea what I'm talking about?

[fiery swallow]

find look at rotation?

[flat coral]

Oh my GOD thank you

Why can I get a control desired rotation but not set it?

I'm trying to tell an AI pawn to face a given point

I guess I could just manually rotate the pawn

[plain hemlock]

Hello! Is it possible to create a NavProxy in runtime within a Blueprint? ! am randomly building a level with "blocks" of different heights and I'd like to add a Navproxy to the taller ones for the AI to jump off of... Possible?

[half portal]

Currently working within a Top Down Template, can I switch to third person controls, which essentially means copying over the 3rd Person Template setup? Without breaking shit haha

[flat coral]

Interestingly this doesn't work, the behavior tree doesn't run frequently enough to get a smooth rotation

[solid sable]

how can i make my top down character aim where where the cursor is pointing but still able to use wasd? looking to make a drop off path with it later every weapon will have a different drop off, wasd works just need the aiming aspect now.

[spark steppe]

set control rotation

if you set it, it will turn with the turn speed, guess desired get's set by that

[flat coral]

Unfortunately this isn't working

[calm citrus]

anyone know how to fix camera clipping into walls when using True First Person without making the capsule radius bigger?

[tranquil gorge]

hello everyone im having what could be a pretty basic issue but i was wondering if anyone could help me use the cinecameraactor as my active camera. I pretty much dragged it into the main view window and deleted my 3rd person blueprint cameras since i wanted there to be a nuetral camera activity amongs the players. and i started to code the camera in the level blueprint however it doesnt seem to want to use or identify my camera at all. Any tips?

[spark steppe]

doesn't it rotate at all, or what exactly is "not working"?

you are aware that there is a rotate to AI task?

[flat coral]

Doesn't rotate at all. Moves around all over the place facing the same way

[flat coral]

TELL ME MORE the trick here is unfortunately I'm not just using the AI Move To Location because that wasn't working on a flying AI and I dont want to use nav meshes either (i'm doing my own obstacle avoidance logic)

That's my movement function

[spark steppe]

rotate to face bb entry

while the entry can be an location or an actor

[flat coral]

aw hell yeah I can work with this! does it use the rotation speed of the actor?

[spark steppe]

i think so, yea

and i dont know if that matters but on my NPC i have disabled "use controller desired rotation"

[flat coral]

I bet you have this on tho

My understanding is either works but it's one or the other

[spark steppe]

no, they are off, too 🤷

let me check another thing

[flat coral]

Huh! Then what's actually turning your pawn?

[spark steppe]

the ai task

i don't even have an CMC for my flying pawn, just using the floatingPawnMovement component

[flat coral]

Interesting! I should probably be using that component

instead of CMC

[spark steppe]

but well, may depend on what you have

my flying thing is a drone which does a bunch of stupid things

xD

ah

i'm doing the rotation on tick

because it also tilts depending on the velocity

[flat coral]

Ahh clever

[spark steppe]

so i pick the control rotation (which the ai task sets) and apply it on tick

[flat coral]

This will not, it's either a missile that tracks the player or a sorta... lightning alien, that does AOE damage

(They'll have the same brain don't tell anyone)

[spark steppe]

so my actual turnrate is the interp speed

[flat coral]

Do you have an AiController class or are you just using the default?

[spark steppe]

however, something similar should work for you too, just that you probably also want roll/pitch

using the default

well, some custom, but its not adding anything relevant

[flat coral]

Yeah, this thing has to be pretty smart in calculating movement because it starts with physics velocity. Gets kicked out by a kinetic launcher, then activates and tracks

[spark steppe]

just kicking of my behavior tree

[flat coral]

Does the standard AI MoveTo work on the FloatingPawnMovement or are you doing something custom?

[spark steppe]

seems to work with the AI task and FPC alone

it's been a while since i made that, so i have to read the BP, don't take anything for granted 😄

[half portal]

https://www.youtube.com/watch?v=D-zdSV8kPww this might help!

[flat coral]

Well I'll try it out that way at least, I want as little custom in this as possible

[spark steppe]

yea that floating pawn movement component might suit you better

as you don't need swimming, and all that stuff which the CMC adds

[fickle nebula]

I have a scene capture and when I change it to orthographic view it hides the sky, anyone knows why?

[flat coral]

Yeah CMC definitely felt bloated for this task, it just flies around

[fiery glen]

perhaps your skysphere has no bottom?

unless it's facing the same way here

[fickle nebula]

it's the unreal standard

[fiery glen]

which one

BP_sky? Sky atmosphere?

[fickle nebula]

I just started a new level to test this idea, I was using unreal split screen feature, but I'm thinking to do a custom split screen

[fiery glen]

not sure what the best practices are there

seems certain materials with fresnel might not show up in ortho views

might be related

[tranquil gorge]

does anyone know why unreal keeps failing to save or auto save parts of my project

also should i downgrade to ue4 because of this

[dark crow]

Well, not without the warning

[sudden nimbus]

there will most certainly be some kind of useful message in the Output Log*

[runic parrot]

Hi! does anyone have problems with a DataTable using soft references to class? Every time i restart the engine, i need to go and manually compile each one of the classes that the soft reference are referencing. If not, they are not recognized.

[sudden nimbus]

Not recognized how?

[runic parrot]

This is my table ST
If i try to get some row from there and do "Resolve soft reference" on the soft references, they will say NO some times after a restart. I need to go and compile those clases, the soft references can be resolved after that.

[split ginkgo]

What is the best way to detect when the player looks at something that it can interact with. The only thing I can think of is doing a line trace every tick, but wouldn't that be expensive?

[brazen pike]

go for it. It would take thousands of line traces every tick to make a noticeable performance hit

[sudden nimbus]

There are some gotchas with soft references. Have you watched https://www.youtube.com/watch?v=K0ENnLV19Cw ?

[dark crow]

I think I had some problems with Soft References in DTs too

[split ginkgo]

Oh okay awesome, I just wasn't sure. Thanks!

[dark crow]

Would not load sometimes

[runic parrot]

The reference breaking after a restart sounds like a bug.
I haven't seen that one, i'm gonna check it, thanks.

[sudden nimbus]

It could be, but honestly, it likely isn't. They are just tricky 🙂

[leaden dock]

when i get a class type as output, how can i check if that class is not None?

like if class is not none, create a new object from that class

well seems like checking if its a child of the class i want to create an object of is enough

[tight schooner]

Maybe an "IsValid" node would've worked too

[flat coral]

Hey if I wanted to write my own Movement Component, is there an interface or something so the pawn can get commands from an AIController?

[twilit heath]

there is a fairly deep inheritance

you'd probably want to start with UNavMovementComponent,, or UPawnMovementComponent

[flat coral]

Do you know which inherits from the other? I'm deliberately trying to avoid the UE nav movement stuff because I'm rolling my own navigation

[twilit heath]

pawn from nav

and that doesn't really matter for a movement component

its the PathFollowingComponent on the AI controller that will calculate what goes into AddMovementInput

movement component just takes things from there

[flat coral]

Hmm. Ok so the root of this frustration is that using the AI MoveTo command on a basic pawn with FloatingPawnMovement just doesn't work, and I've been assuming that was because I'm not using any nav mesh

[twilit heath]

navmesh is there so path can be calculated

not to move on

[flat coral]

This all begs the question of why MoveTo isn't working with this pawn lol

[twilit heath]

if its flying... probably because the pathfinding request fails

[flat coral]

I don't want it to do pathfinding

[twilit heath]

use visual logger and record what happens when you give it move command

[flat coral]

Wait what's the visual logger

[twilit heath]

its last on the developer tools list

very useful for debugging controllers, pathfinding and behavior trees

as it logs everything

i think epic has it reasonably well documented

[flat coral]

Man this is latin to me

[twilit heath]

docs

but on recorded frames where it deals with pathing, it logs all requests and all results in the right hand side window

[flat coral]

This seems like the frame with the issue but damned if I know what it means

yeah lol google says this happens if the end point is not on a nav mesh.

So if I dont wanna use their nav shit I gotta roll my own movement i guess

[brazen merlin]

U can try making the navmesh height a really big number

[flat coral]

I dont have a nav mesh

Frankly I find the concept of a nav mesh extremely silly. My level's already made out of meshes.

[brazen merlin]

Yeah, for flying i usually see a custom setup

[twilit heath]

not your own movement, but your own pathing

there is a massive difference between the two

[flat coral]

I totally understand that but where I'm failing to bridge the gap is I dont understand how to get the AI behavior tree to pass commands to a basic FloatingPawnMovement pawn

Since MoveTo craps out when you don't have a nav mesh, which I wont.

[twilit heath]

that would be by rolling your custom PathFollowingComponent

the default one uses navmesh

so it craps out

[flat coral]

Would that be in a custom controller then?

[twilit heath]

you do need a custom controller in c++ to swap the PathFollowingComponent class

ADetourCrowdAIController::ADetourCrowdAIController(const FObjectInitializer& ObjectInitializer)
    : Super(ObjectInitializer.SetDefaultSubobjectClass<UCrowdFollowingComponent>(TEXT("PathFollowingComponent")))
{

}```

like so

[flat coral]

Ehhhhh I haven't had to cross the bridge to C++ yet, I won't do it for this when I can just write a custom movement component that actually knows how to listen to a behavior tree

[twilit heath]

you can't do this in BP

[flat coral]

Bet you I can

[twilit heath]

no, you really can't

[flat coral]

I know for a fact I can call AddForce on the pawn that's literally all I need

[twilit heath]

like not even a small portion of it

as nothing in PathFollowing is exposed to BP

[flat coral]

So I throw PathFollowing in the trash and make my own

[twilit heath]

then you need to do the same with AIController

or you can't use its API to move

[flat coral]

Nah I'm just using the default AIController anyways, I can just sidestep it

[twilit heath]

and whatever you do here will be a frankenstein's monster, even if it somewhat works, without c++

its possible you can find a plugin that did most of the work for you though

[flat coral]

Everyone else called it a monster because they didn't understand. But to Frankenstein it was just science.

[twilit heath]

ontop of all the other problems, blueprints are spectacularly inefficient running algorithms like pathfinding

tallying up 100x the c++ cost easily

[flat coral]

I can transcode selective parts to C++ later if I have to. Premature optimization has cost us more than algorithm inefficiency ever did. Most waste is high level anyways.

[flat coral]

More actionable question: How do I call AddForce on a generic actor, where I cant reliably cast it to a known class?

[gentle urchin]

Interface ?

[gentle urchin]

#cpp ?

[storm pivot]

AnyDamage (called ReceiveAnyDamage in C++) is not a virtual event & will not override TakeDamage. It gets fired manually from the default TakeDamage implementation. I guess you have overridden the TakeDamage function and not calling ReceiveAnyDamage so it won't fire that event in blueprint. You need to call it manually.

[dusky topaz]

For storing health values (both current and max) would it be wise to make a 2D vector to allow storing of both current and max values in a single map?

[obtuse herald]

You could also create your own struct to name the fields properly

[ornate hatch]

hey guys i am actually just struggling with bullet wind physics here

[dusky topaz]

I could, I've just been kinda turned off from creating structs when not strictly necessary, as my previous iteration of this project ended up with a million and one structs and somewhere along the way one of them broke and the project just stopped working

[ornate hatch]

i tried most of mine own methods but didnt got good results

and even cant find tuts

[obtuse herald]

Yeah, blueprint structs like to break sometimes

[obtuse herald]

At the core you only need to add a constant force to the bullet in the direction of the wind

[ornate hatch]

i am using projectile movement component on the bullet

so is there anyway to manipulate it

?

[obtuse herald]

I don't think that matters really, but I could be wrong since I kinda lack experience in that field

[ornate hatch]

tho i know i can change the X,Y velocity via blueprints but this kinda sucks

[obtuse herald]

Use AddForce

[ornate hatch]

ohh wait

i am trying it now

[grizzled jungle]

hi there ^^

is there a way to convert the Key Structure into a string?

[sly relic]

If you're just looking to get the name of the Key, you can try Get Key Display Name, this will give you a Text output but you can convert that to a String

[lime silo]

I'm trying to compute some data for some physics meshes, what's the best place to actually do that/store it? Ideally I would do it once per asset or at worst per game launch

[grizzled jungle]

thx. will try that

[leaden dock]

are there no math functions in blueprint?

like smoothstep() or so

[jagged stone]

Is there a quick way to reset all the Game State Variables to their defaults (without loading level)?

[mental trellis]

Not really.

[icy dragon]

Other than having a function to set them back to their defaults you set, not really.

[cyan bone]

https://blueprintue.com/blueprint/d2ccogg4/

I created this function that compares an array of Points, and gets which one is the Lowest Angle in comparison to my Original Point using dot product, or cross product.

It gets the Average Center of All points, then the dot product of All Points relative to that Average Center.

After testing it for hours, I dont understand why it is not working. And im thinking maybe the Dot Product has some bug?

Sometimes it gets points that are not lower in the Angle. Other times it gets the right one. Pls help me. What am i doing wrong?

[harsh coral]

Yeah, never mind, I fixed the problem by simply changing the blueprint itself, so I don´t need to copy settings anymore...:)

BUT,

[faint pasture]

I'm your guy, what's up?

You using the stock projectile movement component or did you roll your own?

[harsh coral]

Now I have a different problem...I exposed some parameters to cinematics, so I can have a master sequence and then have a few duplicate instances of it to render several layers in one go.
The idea was to then add the blueprint with the exposed parameters and simply key them differently for each instanced sequence.
Unfortunately the keyed changes don´t evaluate in the master sequence.

Actually, just figured out that they also don´t evaluate in the instanced sequence itself, so its something inside the blueprint that doesn´t work in teh sequence...

Wohoo! Figured it out:
"In the blueprint’s “Class Settings” you need to tick “Run construction script in Sequencer”"

[onyx pawn]

how can one get the actor that is at an index in an array and call that world location that of that actor

[mental trellis]

"call that world location"?

[hallow gate]

Really niche (maybe) and weird issue here, I'm trying to capture "Photos" using render targets, and it all works fine, except when I try to print the pictures to a render (Cube in the shape of paper), it only works on the SECOND attempt?

There's also the issue of having to re-capture the photos after entering the widget again before I can print over again, and my attempts to fix that have also flopped. Honestly it's too complex for my brain to explain in text and would very much appreciate assistance in a VC

Ah, hang on, I've maybe solved my own "Print" issue, give me a sec

[cyan bone]

@mental trellis Do you know what might be the problem here? im stuck on this for hours now 😦

[hallow gate]

Nope, still confused, LOL

[mental trellis]

A bit of a misunderstanding, @cyan bone

You don't dot product a vector and a position

You have to dot product 2 vectors.

[cyan bone]

thats what im doing. i dot product after the subtraction between 2 locations. Right?

[mental trellis]

You have to do (Top-Center) . (Point-Center)

That will give you the angle between the 2 lines.

Well, a representation of that angle.

[cyan bone]

Thats what im doing? I compare my vector from point of origin - Center of points with All vectors from Point of origin to Points

and what boggles my mind is that sometimes it gets it right

[mental trellis]

You have your pisn a little messed up

That bottom - pin is wrong

You want the loop line to go into the top pin

and the center value to go into teh bottom

[icy dragon]

FYI: BP nodes aren't wireless.

[cyan bone]

I did that and tried a few more things still doesnt work. I will make a video, to show you what is happening

[hallow gate]

Okay I think I figured out my issue, thanks anyway

[mental trellis]

No no, Clop!

[cyan bone]

@mental trellis Did exactly that right now. Same result. It keeps selecting this dot, when the blue line is clearly more to the right 😦

But it understands that all others are not to be selected.

Should select blue line

updated it. still doesnt understand that last blue thingie is the most to the right

[fallen glade]

Is it possible for a binded event (1) to know what has triggered it? (2)

[gentle urchin]

If you do custom dispatcher, you can provide along what else you need

Not sure id add a component for each footstep tho

Id rather just play the sound

[mental trellis]

I can only assume your point of origin is wrong then.

[fallen glade]

I would do as well but I need to change the cue with the correct rattle/floor material, sound intensity etc. What is this custom dispatcher thing? I googled it but nothing is coming up

this stuff

[mental trellis]

Instead of adding a new component, you can just change the cue.

Alternatively, there's probalby just "play sound at location"

But for single player only obv

[fallen glade]

I've tried to do that but how do you do it? Every cue I spawn plays instantly

wait, you mean edit a cue variable and then feed it to a spawn? I didn't try that

[cyan bone]

@mental trellis Its always this one line that bugs it. It seems like a bug in the actual dot product/cross product.

it works 90% of the times

Is the cross product influenced by the distance of the point?

[lament fox]

hello , i googled but i couldnt find a way to save my saved structure bp as a csv . I have a structure and i change the variable when i play the game. But i need to save that as a csv in my content. is that possible? or do you have more wise idea?

[faint pasture]

So given a view position, target position, and array of points, select the point at smallest angle from the view->target vector?

That will be the point with the largest Dot(Normalize(Target-View),Normalize(Point-View))

no cross product needed for this

Select E right?

[gritty juniper]

Hey guys, how to change TPGameMode to FPGameMode in gameplay

I supposed it will work, but it failed

I am using TPGameMode, so i assume Get Game Mode will return TPGameMode

[faint pasture]

You don't change it at runtime, you either set it constant throughout the whole project, override it on a per-level basis, or open a level with a gamemode option.

[faint pasture]

What are you trying to do? How many GameModes do you have?

[gritty juniper]

I want to achieve both FirstPerson and ThirdPerson in game

I suppose changing GameMode is a more intuitive way

u mentioned "open a level with a gamemode option", what would be the node of that?

[silk cosmos]

Do you mean be able to swap from fp to tp?

[gritty juniper]

yeah

[silk cosmos]

You could just use two camera in a single pawn and swap between them, updating visibility of required meshes

[cyan bone]

Thanks. But no. In this case its the C. Its the one that is the most outer to the right. And B is the most outer to the left.

I thought cross product could do this. Because i have done a Convex Hull in blueprints using cross product. It can tell what is the most right and the most left of a group of points.

[magic summit]

hello, I try to use random integer from stream, for some reason it generates every time different result even tho stream (random seed) is same
what am I doing wrong?

[faint pasture]

You said lowest angle right? Which angle are you talking about? Your phrasing makes it sound like you want the point at lowest angle from the Origin-Target line

[cyan bone]

Im trying to get the 2 most outer points from the Green point.

sorry if i dont explain myself well. this is confusing.

[faint pasture]

I'm not 100% sure that it'd have no edge cases but those 2 points should be the ones that result in the highest and lowest Z component of Cross(Normalize(Average-View),Normalize(Point-View))

So Cross(Normalize(Average-View),Normalize(Point-View)).Z is the number you want to look at. Largest and smallest will be your 2 points.

[magic summit]

what is strange, it works if I break and make it again

[faint pasture]

assuming all points are in the XY plane

[cyan bone]

Thats exactly what i have done. And it works 90% of the time. There is just 1 point sometimes that is given a wrong Z, that looks like a bug of the cross product node.

[faint pasture]

You weren't normalizing before which is why it wasn't working

[cyan bone]

normalizing?

[faint pasture]

Yes, normalize the vectors before cross product

Otherwise distance will come into play

a further point at a shallower angle could have a higher cross product magnitude

[magic summit]

thats true, I as also once caught off-guard by this distance in dot or cross product

assumed dot product normalizes it automatically

[faint pasture]

You sometimes want to use a dot product with non-normalized vectors (projecting an impulse on to a normal for example, to determine armor penetration)

[cyan bone]

That absolutely fixed it. I just tested it like 10 times, and seems like its fixed. Thanks so much @faint pasture

This was driving me insane

[magic summit]

anybody help with random from stream?

[faint pasture]

Magnitude of dot product is area of the parallelogram

[cyan bone]

It was really that the problem. Because i noticed the bug was always when 2 points were very close, but the one a bit more far away (yet wrong), gets to win the other. And i was so confused.

[faint pasture]

The easy way to think about it is

Dot(A,B) = How aligned they are x A.length x B.length

Cross(A,B) = a vector at right angles to both inputs where length is how orthogonal they are x A.length x B.length

When you normalize the inputs, they're both of length 1 so you just get how aligned they are and how orthogonal they are

[wanton galleon]

Hey, sometimes I see some screenshots from BP code where line connecting pins are not curvy but totally (or nearly) straight, does someone know how they do this please ?

[old swift]

electronic nodes plugin on the marketplace

[wanton galleon]

Thanks !

[tawdry surge]

Pretty sure you can set the interpolation of the wires in editor preferences too

[digital bison]

How can I make it so that I will jump as soon as I touch the ground whilst holding space? preferably as if I had never actually touched the ground at all (to prevent friction taking action)

[torn kettle]

:no_entry_sign: Nico.ckt#0900 was banned.

[nimble vortex]

thanks!

[upper summit]

Thank you!

[old swift]

So I have this animBP event that provides an Action Type enum, selects a montage to play, then I want to call a callback notifying the native code that the montage has finished or otherwise exited. My issue is that the Action Type is incorrect when the callback is called by the Play Montage node. I guess the input variable from the event doesn't remain valid across a "latent" node? Is this expected behavior? If so, how do BP enjoyers typically deal with this kind of thing?

[grim peak]

I have question. I have this widget menu. On the menu I have exit button. When I press th Exit_btn. I want to exit widget so close menu (does this, but my thirdpersoncharacter (default one) is gone. 😦 How do I fix this? thanks

[faint pasture]

You are hiding the player character.....

[trim matrix]

hello all, i had a question....
i have a parent class (that inherits from character) and i have many child classes i wish to change variables on etc.
however, there is a variable i wish to change on all the children classes that is on an actor component of the parent class.
this variable does not appear in the 'data only blueprint' view despite other component variables being visible (eg, the skeletal mesh of the skeletal mesh component)

so tl;dr: i was wondering, how do i get a variable on my own custom actor component visible in the 'data only blueprint' view ?

thank you.

[vestal gull]

how to get first person camera walking shake like this?

[tiny comet]

Hello I'm trying to setup a character controller, and sending an object reference through an interface, however I get an error that tells me that even though it is referencing the self of the main character, the controller is not seeing that. I'm not sure what to do and the discord server for the class that I'm taking no longer exists

Any help would be greatly appreciated

[grim peak]

Thanks... I missed the checkbox (hidden) thirdperson is back again 🙂

[fallen glade]

Keep failing to set variables to a cue unless it's an audio component reference

:/

[mental trellis]

Use 1 audio component and change its cue.

[trim matrix]

if any one was curious.... i will just make a blueprint variable and set it on the component in construction script. not ideal but it works...

[fallen glade]

But then it can play only one sound at a time right?

[mental trellis]

Have one for each foot?

I'm not entirely sure what'd happen if you have an audio component and changed its cue half way through playing...

[fallen glade]

Problem is I will have stuff with up to 8 feet (for now) is it more expensive to have a few audio components per actor or spawning new one per step do you think?

[brazen merlin]

I do footsteps as anim notify events, per foot, then check the PM which plays the right sound.

[mental trellis]

Spawning ad hoc components is always bad if you do it continuously.

[fallen glade]

Is it just an audio file? Because I need to tweak my audio cue.... I guess I could play separate files for rattles etc

[fallen glade]

Thanks for the help

[mental trellis]

Better to have 1 per foot, even if you spawn those dynamically, don't deleet and add them.

[brazen merlin]

I believe the PM identifies the audio to play, not tied to the PM, just used to look it up.

[mental trellis]

Are you doing SP or MP, @fallen glade ?

[brazen merlin]

I kinda end up using data tables for everything but u dont have to

[faint pasture]

Why would multiplayer make a difference here?

[fallen glade]

Single player no way I can deal with multiplayer

[faint pasture]

Not being snarky, I genuinely can't think of why it'd change anything

[mental trellis]

You don't technically even need an audio component... I think.

[fallen glade]

??

[mental trellis]

I'm sure there's a fire and forget function to just play an audio cue.

[faint pasture]

Yeah just play sound at location

[fallen glade]

yeah but I need to tweak that cue and can't do it without a component

[mental trellis]

The component implies some sort of ongoing sound that moves with your character. Like maybe background music.

[faint pasture]

Tweak it how?

[fallen glade]

stuff like this

etc

[faint pasture]

OK so you have a continuous cue with step transients?

[fallen glade]

To mix theese

[mental trellis]

If you can guarantee that your footstep sounds won't overlap (the next footfall happens after the sound ends) you can just use a single component for that.

[faint pasture]

This is probably more an #audio talk but yeah if it's something that's sort of continuous like armor clanging or rattling then yeah a component on the character would make sense. You'd probably have a continuous cue and then some transient step sounds

You're somewhere on the spectrum between say, a car engine and a gun shot. continuous vs transient

[fallen glade]

I'd say i'm more like a gun shot. The rattles are footstep rattles, not continue

I'll stop clogging this thanks for the help everyone!

[bold phoenix]

Hey ! Anyone knows if it possible to save and load the game from a folder path rather than slot ?

[gusty shuttle]

Do you guys get the issue where when you hit "save as" it wants to make a new level or save as a new level?
How does one get around this?

[mental trellis]

Isn't that what it's meant to do? Not sure I understand the problem.

[gusty shuttle]

Lol, normally when you hit Save All, it won't want you to save a new version of your level

[mental trellis]

Well, you didn't say "save all" 😄

[gusty shuttle]

Sorry, wrong words. But you get the point

[mental trellis]

It'll come up with that when you hit save all if something hasn't been saved before, I assume, and it needs a name.

[gusty shuttle]

Aye, I suppose it wants me to save an auto save level. I'll try to recreate. Seems to happen after fixing redirectors

I'll try to recreate the issue

Well whatever it was it's "fixed". Seems like an issue that's being tracked on the forums

I fixed it by closing the project and reopening, fixing redirectors and that seemed to clear it up, for the record

[mild crystal]

Hi everyone. I make this function to check which attack i will play.

My question is instead of disable all input is it possible to only disable the input from F key?

[mental trellis]

Don't disable the F key.

Just stop it executing the attack if there's already an attack happening.

Add some sort of bool. "IsAttacking" or whatever.

Set it to true when you hit F and then to false when the attack has finished,

[mild crystal]

ok

its because i made this and i dont want to play multiple times the same animations if for exemple

someone spam F key

[blissful grail]

https://tenor.com/bfksb.gif

[rare gale]

Wouldn't the Select node work to clean that up rather than a Switch?

[mild crystal]

ive already tried with it but im using the enum in game so i kinda need to use here

[rare gale]

Select would still use the enum, just picks a different AnimMontage for each one and runs through only one set of those execution nodes... I can't see all you're doing so maybe not though

[digital bison]

Why will my character not jump when it lands?

[mild crystal]

Is it possible to remove the input from F key

I need help

can someone tell me how do i remove input from only F Key

[winter pebble]

I wonder if it has something to do with the way the engine tracks jumping and landing. What happens if you add a small delay after the OnLanded event so it has time to register that the character has hit the ground again before trying to jump?

[digital bison]

Im pretty sure I tried that before, I'll give it another go

Wow it works XD thank you

[winter pebble]

No worries 🙂

[digital bison]

Is it possible to achieve it without a delay though?

For example, whenever the character is FREE to jump then it will execute?

Having my character touching the ground for a period of time is actually a bad thing 😦

[winter pebble]

You can probably make the delay like 0.01 and it'll still work and shouldn't be able to feel it in the game

[digital bison]

Hmmmm

Maybe I can get more access if I write the function in Cpp

Better control*

1 last question: Is there a way that I can make an exec flip the value of a bool?

[faint pasture]

bool = !bool

[digital bison]

But an exec is not a bool

[winter pebble]

Possibly. There's probably a cleaner way to achieve the same effect but I'm not sure what the best way to achieve it would be. It might be worth looking into how the engine handles jumps because that will give you a better idea of the different ways you can tackle the same problem.

[digital bison]

Yeah I'll check out the definition, thanks a lot

Do you know about the flipping a bool with an exec?

[winter pebble]

You should be able to use a branch node to check what state the bool is in and then set the state to the opposite on the other side of the node. I wouldn't be surprised if there was something like a 'toggle' node that does that for you also

[faint pasture]

On exec, set bool = !bool

[digital bison]

idk this is all I've got

But I don't think that does anything useful

[faint pasture]

What are you trying to do? Have bIsJumping true after a jump and false after landing?

[digital bison]

No I want to set isJumping to true when I press space and false when I let go

[faint pasture]

It's right there. Set it false on released

[digital bison]

"there" is where XD

[faint pasture]

Pressed -> set it true
Released -> set it false, then do the jump (for holding down jump to jump higher which I guess is what you're doing)

[digital bison]

No it's not what I'm doing

I'm trying to set the bool to true when I press space and false when I let go

Im also using UE5 and they don't seem to have an is input key down anymore...

[winter pebble]

It should look like:
Pressed -> Set IsJumping (True) -> Jump
Released -> Set IsJumping (False) > Stop Jumping

[digital bison]

Ah so what I have for pressed rn does actually set isJumping to true?

[winter pebble]

Yep 🙂

[gentle urchin]

Isnt there a jumping bool in the cmc?

[faint pasture]

Yes. What did you think it was?

[gentle urchin]

Or atleast inAir

[winter pebble]

I think there is yes

[faint pasture]

There's something along those lines

[digital bison]

I had no idea honestly it didn't make it very clear

So this

[faint pasture]

Yes that's as clear as can be

[winter pebble]

yes, and then connect the empty white arrows on the right to the "Jump" and "Stop Jumping" nodes afterwards as well 🙂

[digital bison]

I actually have no use for the stop jumping node but thanks guys

[gentle urchin]

IsJumping or just Jumping

Putting 'Is' in front of every bool is redundant imo

[winter pebble]

Kind of agree, thought with the engine kind of being written with that in mind it makes sense to continue the trend

[faint pasture]

bAreWeJumpingAtThisSpecificTimeInThisSpecificLocationAtThisTimeOrNot?

[digital bison]

Maybe but that seems to be what Unreal has done

[gentle urchin]

CanJump would be sensible tho

[gentle urchin]

The bool is true, so are we really jumping, or not ?

[winter pebble]

How can jumping be real if our feet aren't real?

[faint pasture]

yesn't

[gentle urchin]

Its UnReal

[winter pebble]

Touché

[gentle urchin]

Someone else did it poorly, so i continued on the same path

Well its up to each and every one i suppose^^

[digital bison]

Saying "is" at the start of a bool isn't doing it poorly

XD

You just have a personal preference on how bools should be named 🤷‍♂️

[winter pebble]

Fair, I don't have a preference but I can see the argument for keeping things standardised to keep things clear. I'm not sure how either branch would pan out in a large scale development ^.^

[gentle urchin]

I ment the argument

Was a poor one

[digital bison]

The argument depended on the context

And depending on the context

[gentle urchin]

Sorry if that was unclear:p

[digital bison]

It wasn't a poor argument

[gentle urchin]

Guess we'll disagree there :p

I'm not on to talk anyways, my style guide is fluxating a lot 😂

IsJumping isnt bad by any standard really, i've seen a lot worse

[ornate hatch]

Nah the stock one

[gentle urchin]

My earlier coworker swapped between english and norwegian for the variable names

Add inn typos and you're golden

Even calling the same thing different names in different program parts. Was hella confusing

[ornate hatch]

@faint pasture and is there any way i can set up perfect marks on a sniper scope for bullet drop and wind?

[winter pebble]

Yeah that sounds not fun to debug 😛

[gentle urchin]

Spent soon to be two years cleaning it up

[faint pasture]

First assignement is to figure out how you're gonna adjust the projectile velocity due to wind. Where does the wind vector live?

GameState is where I'd guess.

unless you're using some Wind system

[ornate hatch]

I need one tho

Like random wind after specific amount of time

Or just some static level based winds

[ornate hatch]

I have a basic drop setup ready

[faint pasture]

Is wind global? I'd guess so as it'd be a lot more complex if not

[ornate hatch]

Ya global

[faint pasture]

Won't be very predictable but a quick and dirty way would be to do this in the Projectile.

Tick -> PMC.Velocity = PMC.Velocity + (WindVelocity - PMC.Velocity) * DragCoefficient/Mass * DeltaSeconds

By not predictable I mean you'll get slightly different results at different framerates due to integration errors.

[ornate hatch]

Oh then instead of tick would timers work?

[faint pasture]

Why would you use a timer? PMC updates on tick anyway

You really want to make your own projectile system though and integrate drag into it, it'll be much better.

[ornate hatch]

Oh NVM i dont understand timers very well anyways

I thought PMC was the allin one dude

[faint pasture]

Check if the PMC can use force, IDK if it does or not. You can formulate the drag as a force in much the same way

It is sorta all in but not great for sim stuff

If you're doing a long range shooting game with semi-realistic ballistics I'd read up on integration techniques and make your own projectile system.

Mine uses line traces instead of shape sweeping (Don't care about the diameter of a bullet, it can be treated as a point)

[ornate hatch]

Ya i tried force method but it need physics simulation on actuall mesh and it disables the PMC

[ornate hatch]

Lol i am just using a squished sphere

[faint pasture]

Yeah I was just spitballing there because you can use Force with the character movement component so I guessed they mighta added the interface for that.

Just do a line trace system.

Tick
Update Velocity (Gravity, Drag, Wind, etc)
NewPosition = Position + Velocity * DeltaTime
Line trace from Position to NewPosition
Process hit if any
Position = NewPosition

[ornate hatch]

Why line traces, those can't be bent right?

[faint pasture]

What is a bend but a bunch of little lines

[ornate hatch]

Htf u do that???

[gentle urchin]

Divide and conquer

[faint pasture]

#blueprint message

[woven kiln]

Speaking of line traces, I'm having an issue with mine where sometimes the trace doesn't hit anything, nothing at all, giving me 0, 0, 0 on Impact Points/Locations with Printing.
Happens with all sorts of Static Meshes, Skeletals, whatever, like they've got holes in them that do not register any existing kind of collision

[ornate hatch]

Oh NVM lol

I will try it tomorrow

I don't have access to my home pc now

[gentle urchin]

Predict and trace projectile path may be helpfull

[faint pasture]

Drag and framerate exaggerated

[gentle urchin]

The wind would be static tho

[faint pasture]

Trace projectile path won't handle wind

[gentle urchin]

Sure it does

With some math

[ornate hatch]

Ya i saw that stuff on forums but didn't find anything related to that helpful

[gentle urchin]

Knowing distance, mass you can calculate accumulated wind force

[faint pasture]

Anything nonlinear (drag/wind) will rely on your timestep. Gravity does not. You'll want to make sure you have a non time-dependent integration

It all depends on what you consider "close enough" though.

[gentle urchin]

True

Is it ment to be static?

As in, once the shot is fired, wind remains static untill hit?

Not globally static, but static in context of that one shot ..

[faint pasture]

The thing about wind is your acceleration depends on your velocity. wind and gravity are completely different

[ornate hatch]

Ohh, thanks mate for the help!

btw where tf i openLevel blueprint in ue5

[faint pasture]

If you need to be insanely accurate I would simulate the path at a constant timestep and then interpolate for the tracing

[faint pasture]

You don't.

[ornate hatch]

Why