blueprint

[astral epoch]

So say a squad of 25 characters walks into view, that's gonna trigger 26 times.

[solar sequoia]

you implement it on any number of classes and can test "Does implement interface" on an object to test in a similar way to a cast success. Much more efficient

[astral epoch]

Huh, didn't think of that.

So I just need to tie an interface to the squads for it to register?

[limber parcel]

how would i actually reshape the collision things? so far i only figured out how to move and delete them

[solar sequoia]

toggle through these options

[solar sequoia]

you would probably put an interface on whatever actors you might want them to see

[limber parcel]

bruh

[solar sequoia]

yeah same thing

or you can press w/e/r to toggle through them

[limber parcel]

but none of them lets me move the vertices

[solar sequoia]

you can deform the individual collision volumes to change their shape

[limber parcel]

deform?

[solar sequoia]

in the scaling tool, yes

collision data is a bunch of individual shapes. Just modify those shapes to fit how you need

[limber parcel]

i added a simple capsule collision now and adjusted it to fit the tree

[solar sequoia]

looks good to me

[spark steppe]

you can't manipulate the form of a convex collision

[limber parcel]

ohh ok

[spark steppe]

if you want to do this, you have to make your own collision mesh in blender or similar

[gentle fog]

How can I react to physics overlap event in my blueprint? It seems that none of the events are available (Static Mesh Component)?

[limber parcel]

search for event start overlap

or check the overrides

[gentle fog]

does not exist

[spark steppe]

when you right click the component in the hierarchy, the events dont show up?

[gentle fog]

End Play is the only override I can find

[spark steppe]

onComponentBeginOverlap

[spark steppe]

right click the component in the hierarchy

in the contextmenu theres an option to add events specifically for that component

[gentle fog]

(sorry im noob)

[spark steppe]

that's an instance, not the blueprint....

[gentle fog]

ah

[lofty hound]

I see, so if I multiply by -1 and then add 50 to that will it move backwards by 50?

[gentle fog]

well I can't find the hierarchy on the blueprint

[spark steppe]

top left usually

components list

[spark steppe]

in main menu, window => components

[spark steppe]

why are you like this?

click the window in main menue while you have opened the blueprint

[gentle fog]

like what? I can't find it...

[spark steppe]

wait

[solar sequoia]

it depends on if you want to move the character in 3d space or not

[spark steppe]

sorry

[gentle fog]

If you mean the window with the viewport, it also does not have anything about components

[spark steppe]

what the heck is that blueprint

what is the parent class? it shows on top right corner

[lofty hound]

Yes backward in relation to forward rotation in 3d space

[solar sequoia]

he probably moved tabs around for whatever reason

[gentle fog]

It says "Static Mesh Component"

[solar sequoia]

then yeah, it should be fine

[spark steppe]

do you want to make your own static mesh component class?

[brazen crystal]

Can anyone help find out why my break vector and break rotators aren't working...?

[spark steppe]

or do you rather want an actor with a static mesh?

[solar sequoia]

aren't working in what way?

[astral epoch]

So I noticed a little... issue with this approach. Well with detection in general.

The Squad is doing the detecting but is seeing all of the characters that are a part of the squad.

Any way to create an ignore list?

[gentle fog]

Hm, kinda, not sure. I basically want a building component that adds the shape of a building and some behavior, then my hope is to add tons more of those components to my city actor. I'm doing it this way because I heard in some video that if you have lots of meshes it's better to have them as component instead of actor. Not sure if that is true though (or even possible)? @spark steppe

[brazen crystal]

The vector and rotator values going in are fine, but are zeroed out on the X Y an Z outputs, giving me Accessed None errors

[solar sequoia]

are you testing if they implement the interface?

[astral epoch]

Yes. My concern is more the sheer amount of calls regardless of the branch outcome.

[spark steppe]

thats bullshit 😄

you dont want to make a whole city in one blueprint

[solar sequoia]

I believe that DII checks are less costly than casting

[gentle fog]

indeed I don't want to do that. So I'm guessing actor is the way?

[spark steppe]

yes

[gentle fog]

Alright, thanks a lot! 🙂

[solar sequoia]

it shouldn't give accessed none if it's a float. Are you setting and that's invalid or something?

[astral epoch]

You said. But I mean the pawn sensing is calling its event regardless of how I'm checking validity.

And its going to be doing it a lot

[solar sequoia]

I'm not really the person to ask about AI, but isn't there a stimuli you add to individual actors who should be sensed?

[astral epoch]

Hmm, might need to look into that.

[brazen crystal]

Well, I checked using 0's for the transforms and it ran without any accessed none, so I'm assuming it's the rotator and vectors

[solar sequoia]

it's the widget that's invalid

so tick fires immediately, and it's probably racing your widget creation

[brazen crystal]

Even though the Input vector seems to have the correct value?

(1st sc)

[solar sequoia]

that I don't know, but my guess as soon as looking at it is that the tick is calling the widget or its owner too soon

if you right click an object node, you can convert it from a pure node to a "Validated Get", meaning it's basically an "is valid" check and a branch node together. I'd test it with that if I were you

[brazen crystal]

I'll check that out, but as you can see, widget is being used for other things and it works fine. I might experiment with the timing though.

[solar sequoia]

I would definitely check that out first

[brazen crystal]

Also, further complicating things, this is for a VR game, so some objects just aren't created, like the hands

[solar sequoia]

I won't even pretend to know anything about VR

[brazen crystal]

I mean I just started doing this unreal stuff 1 day ago haha

[tawdry surge]

You have prior experience with programming?

[brazen crystal]

Yeah, courses of java at uni

[paper galleon]

Hmmm..

[brazen crystal]

1st year was pretty much just the basics, and this year we went upto javafx, database control, serialisation etc

you know, typical uni crap

[tawdry surge]

I only ask cuz neither VR nor multi-player is something I'd pick as a beginner
Adds alot of complexity before you're comfortable with the engine

[silk hinge]

Hey guys.

I'm working on something specific. I need people to be able to importe there own textures and use those for materials.

So I need to know if there is any way to let people import a PNG file Into the project. at runtime. thanks

[spark steppe]

yes, there is a way

[unborn maple]

what do i use to destroy a weapon that get attach to the enemy. when i destroy the enemy the weapon still floats, i simply try just getting all the remaining weapons and destroying them but for some reason that didnt work

[icy dragon]

Are you destroying the enemy actor right away? No calling event?

[unborn maple]

im getting all the actors in the arry , getting the length and then destroying them using a interface event

[icy dragon]

Destroy the attached weapon first before you destroy the enemy actor itself

[unborn maple]

thanks makoto it work deleting the weapon first

[snow hatch]

is it possible to recreate the farming system from Farming Simulator using blueprints? I'm interested in doing the planting, fertilizing and harvesting

[foggy dew]

I'm not particularly knowledgeable about Farming Simulator, but I can't see why not? Is there some specific part about it that you're worried about, or just generally unsure about how much you can do with blueprints?

[snow hatch]

I'm unsure how much I'm able to do with the blueprints and that's why I wanted to ask if it's possible

[foggy dew]

Unless there's something very strange going on in farming sim, blueprints can generally do just about any game mechanic
they might be slightly less efficient for performance, but I'd say it should be doable just fine

[vapid grotto]

does any one has idea how to work with camera post processiong setting relating to DOF control in character BP. ?

[snow hatch]

Nothing that strange, driving with a certain vehicle will turn that portion of the plot into the crop plot which grows overtime, and the harvesting does the harvesting. What method should I use for this?

can I make it so the vehicle paints a different terrain texture over certain types of terrains?

[foggy dew]

You definitely can, but how to go about it is a more difficult question
So basically all you need (beyond obviously needing the whole vehicle thing first)
is a collider attached to the vehicle that when overlapping the plot converts it either to crops or grown crops into a collected resource?
how to efficiently handle the crops/plot is a bit out of my element
but this is definitely blueprint doable, might just take some research to find the best angle

[snow hatch]

Is it possible for the terrain to change by itself after a set amount of time? I would like to have multiple crop growing stages. As for the crops to not use many resources, they are gonna be similar to how plants in minecraft are made. 1 texture file overlapping another using intersecting lines.

[faint pasture]

Yes absolutely

[faint pasture]

Changing the landscape itself would be tough, but a million instanced static meshes for your plants will be fine.

You'd have to work your way up though, if you're asking the question, you're not gonna make it right out the gate. Start by trying to make a plant actor that has internal stats and grows over time.

Also, for a farming game where you might be far away from the growing things for a long amount of time, you won't really want your growth function to be stateful

That is, PlantStatsDay2 should not depend on PlantStatsDay1, but instead be a function that can be evaluated at any time

[snow hatch]

I want the growing to be spontaneous into another stage not linearly

Wouldn't it be less resource intensive if I tie the different stages of the crop to a certain terrain texture?

[dry lynx]

Hi, does anyone know how to change a float from double-precision to single-precision?

[faint pasture]

There's all sorts of ways to tackle it. Start with getting something to "grow" over time.

The final thing would probably look like fields as actors with a size and stats and growth levels etc, but it all depends.

I would not go 1 actor per plant though, you could easily have all your plants just be a bigass array of raw data that's interpreted by something else. Start small though.

TArray<FPlantStruct> MyPlants

PlantStruct:
-vector Location
-name Species
-float Nutrients
-float Water
-float Sun
-float Disease
-float Growth
-float Yield

[flat coral]

Is there a way in BPs to easily figure out what the parent of a built-in class is? Like say I'm looking at the humble MeshComponent here and I want to find out what it subclasses

[mental trellis]

You want to find its subclasses or its parent classes?

[faint pasture]

Then you have some system (Subsystem or GameMode or GameState or wherever) that can update all your plants on some timer or whatever.
That is the model. What you see in the game is your view, which interprets the model to show the meshes for the plants within visible range etc.

[flat coral]

Parent class

Like for the longest time I had no idea that StaticMesh and SkeletalMesh had a common parent. I assumed they should but I had no idea how to find it

[faint pasture]

IDK about in engine but you can cruise the docs.

[mental trellis]

Well, I'd use the API.

Yeah.

[flat coral]

ugghhh docs

[mental trellis]

If you have chrome, I have an amazing ide chrome extension too.

[flat coral]

I just realized for the first time in like a decade I don't have any IDE installed anyways

[flat coral]

What site is this anyways? I've got this page but it's honestly useless https://docs.unrealengine.com/5.0/en-US/BlueprintAPI/

[icy dragon]

That's the docs for you.

The real docs are pretty much the source code itself.

[flat coral]

Yeah so.... the statement "you can cruise the docs" is not entirely accurate

[icy dragon]

It's accurate if you can sight read C++ code

[faint pasture]

https://docs.unrealengine.com/4.27/en-US/API/Runtime/Engine/Components/UStaticMeshComponent/

[flat coral]

That's well and good for this instance, but I feel like the moment I use the search box I get transported to a different, worse website

[icy dragon]

||apparently it's based on bing||

[flat coral]

Yikes.

Like if I wanted to know something like "what's the original class that declares OnComponentHit" the search gets me nowhere

[mental trellis]

The new api search page is fucking awful.

And why don't the blueprint docs link to other things in the blueprint docs like c++ stuff does?

The worst part about the search is, sometimes, if you put in an exact class name, the first result isn't that class

So awful.

[flat coral]

^^^ the statement "if you want to get decent documentation for blueprints, you gotta be able to read C++", while it might be true, is fucking stupid. Luckily I can, but aren't BPs in general supposed to make it easy for people who can't?

[icy dragon]

The turn tables when you search with Google.

Most of the time the first result is the typename you want

[flat coral]

Yeah I might just end up having a site:docs.unrealengine.com/* bookmark like I do with reddit

[mental trellis]

https://www.google.com/search?q=ustaticmesh+inurl%3Adocs.unrealengine.com i think I'ma change my search prefix to this.

[icy dragon]

Also credit where credit is due, the docs for C++ API tells what module it comes from and what to include

[mental trellis]

site: even better

[flat coral]

What's the difference between inurl and site anyways?

[mental trellis]

inurl can be anywhere in the url.

www.test.com/docs.unrealengine.com would also qualify

I'm assuming site tests the host

[flat coral]

God nothing about BPs quite bugs me like the lack of generics. I could do such clever shit.

[lone arch]

hey guys
i am using Timelines here , the timeline on the Day event works fine but the timeline on the night event does not work for some reason it is kind of stuck on 0.055556

any idea why is this happening?
any solution?

[faint pasture]

Why two timelines?

why not 1 timeline, and night event reverses it

that's probably your problem btw, you got two places where you're setting Intensity, so it keeps being set back to 0 if both timelines are playing at the same time

[lone arch]

ok got it i will try this

[lapis saddle]

Anyone know how to properly work with browser pop up windows if used? I have managed to open the pop up but when it’s finished there’s nothing I found that closes it (the overlay) or even returns back to the last screen as it usually would vanish and present back the main page with new info added.

[silk hinge]

@spark steppe hey, so could you tell me more about the way you can use to let people import there own textures ?
So I can look into it and lurn how to use it ? 🙂

[spark steppe]

yes i could

[warm glacier]

can someone describe this phenomenon for me?

[spark steppe]

well you "delay" the camera vehicle rotation

so it lags behind the actual vehicle camera rotation

[warm glacier]

how to do it then?

[spark steppe]

what's your goal?

[warm glacier]

I want to add some delay to the mesh when I rotate it to the forward vector of the camera.

[faint pasture]

K so camera drives TARGET ROTATION.
You RInterp ACTUAL ROTATION towards TARGET

You have 2 rotations

where you wanna be

and where you are

where you are smoothly interpolates towards where you wanna be

Camera (control rotation actually but whatever) drives where you wanna be

interpolation speed controls how fast where you are chases where you wanna be

[spark steppe]

yea why does camera rotation drive your vehicle rotation?

[faint pasture]

Personal choice I guess, for mouse steering Halo style

[warm glacier]

I actually want to do it more like in The Forest

[spark steppe]

yea but it should drive the vehicle

the camera should rotate with the vehicle

[faint pasture]

Show a clip of what you're trying to achieve

[spark steppe]

and/or you have to limit the camera rotation

so that it can't drift to far off the vehicle rotation

[warm glacier]

https://www.youtube.com/watch?v=APECiISBjA4&ab_channel=CaptureRapture
0:35

[spark steppe]

do they use chaos physics? 😄

[warm glacier]

1:17 better
https://www.youtube.com/watch?v=eB6zFMg9wcU&t=239s&ab_channel=Wolfszeit

[faint pasture]

That looks like a fairly free camera and the sled mechanics steering the sled towards the camera orientation. I'd split the 2 up, make a vehicle that can steer towards an orientation, and then just feed the vehicle your desired orientation from ControlRotation when you're riding it.

[spark steppe]

isn't the sledge a pawn anyways?

[warm glacier]

it is

[spark steppe]

posses it when the player interacts with it, so you can have your own control logic on the sledge

[warm glacier]

I already did that

magically I could do that without errors

[spark steppe]

😄

ok, then don't rotate the camera with you player input, but the sledge

and interp to the control rotation

and let the camera just inherit the mesh rotation

[warm glacier]

Ok I will process this and come back probably earlier than you think

[flat coral]

What's the cleanest way to figure out which of two GUIDs is larger? I promise this isn't as stupid as it sounds.

[faint pasture]

Larger in what way?

[flat coral]

I know they've got a ToString but I can't figure out how to compare strings

[flat coral]

Doesn't actually matter so long as it's consistent

[faint pasture]

You have 4 ints

go nuts

[flat coral]

I've got an edge case where two different handlers will both try to handle audio for a collision, so I figure assign all audio handlers a GUID and in this case they check each other's guids and the one with the "larger" one handles audio and the one with the "smaller" one gracefully exits

Hmm. Weird.

[faint pasture]

Just compare one pair of the ints then

this is not #blueprint territory tho

[flat coral]

Well, it is insofar as I'm doing this with blueprints lol

[faint pasture]

Are your only conversion options to string?

[flat coral]

Looks like it. No break node either.

[faint pasture]

Why not use mass or something

[flat coral]

They could easily be different instances of the same object. In fact, that's the most likely case

Really it's kinda weird that there's no way to compare strings in BPs. How do you sort a string array?

[faint pasture]

Don't do all that.

[spark steppe]

it is, GUIDs are editor only data

[faint pasture]

What's runtime unique, display name? there's gotta be something

I'm using FGUID for inventory but it's a totally different scenario

[flat coral]

I'm pretttty sure they're not. I've used them as the keys on a map before

[tight schooner]

Maybe... World location? What are the odds they occupy the exact same space?

[spark steppe]

yes

[faint pasture]

Or hit normal

you got the hit right?

[flat coral]

They both have the hit

[faint pasture]

They have inverse normals right?

[spark steppe]

we are the hit

[flat coral]

It's kind of a fun problem. Two identical objects hit. They know everything about each other, but they can't talk. They both have to pick the same one as the "winner"

[faint pasture]

Sign(HitNormal.Z)?

[junior hedge]

anyway I can stop these errors? its just a simple stop(sequence) node but its technically stopping sequences that aren't declared yet so it leads to errors, nothing is crashing but it is annoying

I just don't want the errors

[spark steppe]

then don't call stop

[flat coral]

Just check if it's valid before you call

[spark steppe]

or maybe make an isValid check before

both valid options

[tight schooner]

"accessed none" means a node is trying to get data that doesn't exist, like from an unset variable or w/e

[junior hedge]

***but its technically stopping sequences that aren't declared yet so it leads to errors, nothing is crashing but it is annoying

---

[tight schooner]

Yeah, use an IsValid node

[junior hedge]

like this?

or after it

[flat coral]

.....why would you connect "is not valid" to anything lol

[spark steppe]

xD

[tight schooner]

IsValid node needs an input to check. You're checking if there's data there or not

[spark steppe]

ok slow

you have an animation sequence variable

rightclick that, and chose "convert to validated get"

then, replace the isValid you have with it, and only connect the isValid pin to the stop call

[flat coral]

Also just in general connecting two exit pins from a macro to the same thing should raise alarm bells. There are very few good reasons to ever have a graph that looks like this

[junior hedge]

ok

[junior hedge]

wdym by that

[silk hinge]

@spark steppe Then could you explain plz ?

[flat coral]

You've literally made this

[spark steppe]

it's really not hard to figure out, like really not (with a bit of effort, like a 20 second google search)

[flat coral]

"The illusion... of control flow"

[spark steppe]

ok it took me more than 20 seconds

[silk hinge]

People wont have acess to any file or editor , I want people to be able to import things from there own pc from a fully build app.

So i need to use something like a factory, and import assets nodes ?

[spark steppe]

because the web is full of idiots who are too stupid to drag and drop an texture in the content browser...

long story short, theres a blueprint node for it

[silk hinge]

look kid I'm talking about a fully build app instead of trolling people just read properly

So there is like 20 nodes for "import assets things"

Some are requiring a reference to a "Factory"

[spark steppe]

ok now im out

[silk hinge]

This is not a matter of drag and drop wtf

[spark steppe]

i was about to hand you the link to the docs, but whatever

go on

[flat coral]

Is there a way to get a reference to max int in a BP?

[spark steppe]

type a ton of 9s and it'll autoset it to maxint for the input field that you are typing in

[silk hinge]

Bro your literally trolling and insulting people on the internet you cant be surprised people get triggered

[spark steppe]

but there's no real reference other than that

[flat coral]

eeeeeewww

[spark steppe]

@silk hinge i'm pretty aware of what you want to do, i just revoke my comment that its 20 seconds of google search because i was wrong

as it mostly shows stuff about how to import textures in the editor...

but whatever, kid is out, hope for someone else to answer your question

[silk hinge]

You still took time to troll me twice so I guess kid is okay x)

[spark steppe]

indeed

[silk hinge]

Anyway I'm there to lurn, not getting trolled.

There is many nodes indeed, I Just dont understand those who asked me for "Factory" "Asset Tools" references etc...

[dry lynx]

Hi, anyone knows how to change a float from double-precision to single-precision?

[spark steppe]

you dont

[faint pasture]

Cast? Not sure if possible in BP tho

[dry lynx]

this is for a healthbar widget

in unreal 4 it was working perfectly

but when I moved to ue5 it stopped working

[spark steppe]

have you tried creating a new bind?

but also iirc that was quite buggy for some time...

but hold up

[dry lynx]

how do I create a new bind, I'm really new to blueprints

[spark steppe]

not only that a bind is suboptimal, your implementation is probably the worst it can get

you shouldn't call get all actors of class each tick (which you do with a bind)

a better (but not ideal) solution would be to store a reference to your witch in the widget once, and use that reference

a good solution would be an event dispatcher on your WitchBP which your widget could subscribe to (so your text / statusbar only updates when the health changes)

[dry lynx]

nice, I'm going to try it, thanks! 🙂

when u say to store a reference u mean to create a variable that is a reference of the witch?

that doesnt work

[jolly surge]

Is there a way to search for a comment throughout all my blueprints? I'm looking for stuff but i'm not sure at which blueprint it is

[dry lynx]

same error

[spark steppe]

yes

i highly recommend you to watch and try to understand those two videos
https://www.youtube.com/watch?v=ayCEqL7XFZY
https://www.youtube.com/watch?v=sEcoWGrF1Hg

[dry lynx]

okay

[spark steppe]

it's around 15mins total, but can and will save you a lot of time in the long run

[dry lynx]

thanks!

[spark steppe]

specially cpu time 😄

[warm glacier]

Like this? Something is still wrong, the sledge is still spinning.
I want to use force because I will put logs in it and I want the logs mass to influence the total mass.

[spark steppe]

you would add the input to your controller

e.g. player controller => add rotation

then on tick you use controller => control rotation as target reference

sorry for my brainfart, controller is correct

[warm glacier]

I am confused tbh

[spark steppe]

i had to doublecheck in unreal, sorry 😄

[warm glacier]

my entire life I was confused but now I reached a whole new level

I am so confused that I will react to my own statement of confusion

[dry lynx]

I think that the problem is about the double precision not the binding, yesterday I opened the project and it said single-precision today it changed to double, maybe its a bug

still thanks for the help

[spark steppe]

@warm glacier somehow like this i guess

don't take that solution for granted, it's mostly from memory 😄

[warm glacier]

oh so I set the whole actor rotation

that makes sense

[spark steppe]

even tho, it may auto turn to the control rotation, depending on how you set it up

that stuff is confusing, yes, because there's probably several ways to archive what you want

[warm glacier]

Ok the Mouse X thing doesn't work anymore now that I changed it

[spark steppe]

that may be different in your project

also check the details panel of your sledge pawn and search control rotation they should probably be all disabled

[dry lynx]

https://forums.unrealengine.com/t/unable-to-bind-doubleproperty/565425 found the solution if anyone has the same issue

[spark steppe]

next update they might break again

i guess they just forgot to change them to double precision, too

honestly, you should get rid of that binding... @dry lynx

[warm glacier]

and how do I make my camera to inherit controller rotation?

[dry lynx]

for now its a reference.. Im trying to understand the dispatchers

[outer elbow]

Hi im new, does anyone know a quick way to make my stamina bar change colour and stop letting me run when it hits 0 and goes up?
Like the security breach stamina bar, when it reaches the end it turns red and you cant run until it reaches 100

[fleet cedar]

Does anyone know what's wrong with this?

[spark steppe]

there's a get hit result under cursor node

maybe that works for your usecase?

[fleet cedar]

I think I tried that too... maybe I can't do a line trace from a widget?

[spark steppe]

pretty sure you can

[outer elbow]

anyone?

[devout dove]

Which node do I need to use when rotating a plane? Because I get the wrong nodes where the plane moves sideways or something. I want to move the plane in a 3D space

[thin panther]

Add rotation?

If it moves on the wrong axis you are rotating on the wrong axis

[silk hinge]

Is there any way to do some kind of "Curve Trace by channel" ? instead of Line traces ?

[thin panther]

Wdym vurve trace

You want a curving line?

Or like a sphere

[silk hinge]

Yeah like instead of tracing a line,

Tracing a curve for a bullet in a game, kinda like Arma debug thing if you see what I mean

[devout dove]

I found it, Add Relative Rotation

Ok there is one problem, I can't fly upside down

If I go straight up I don't do a "flip" it just points 90 up instead doing a flip 😦

[outer elbow]

.

[devout dove]

Oh boi this is math i know how but bruh

[tight schooner]

Never tackled this myself but you'll want to look into quaternions. Unlike classic euler rotations, they don't have the "gimbal lock" issue when their pitch hits +/- 90°

Flight/space sims use quaternions, I've read

[devout dove]

Have you thought about this even?

[devout dove]

Then i need to use set world rotation right?

[warm glacier]

Is there a problem if I use simulating physics?

[tight schooner]

Gimbal lock is the crux of the issue regarding a vehicle flipping ...that's all I can say. Google from there

[spark steppe]

i'm a physics noob, so not sure

[devout dove]

Ok so let me explain to you.
You have a minimal value, max value and a rate value.
Anything you multiply with "Delta Seconds" becomes "X number / second"
So if your min value is 0 and your max is 1000 and rate is 100 means you can sprint for 10s.
So you divide your rate 100 by delta seconds and you do this "on tick" node.
Then you can create a boolean that says "canSprint" to true if it's above 0 but if it's under 0 you set boolean to false

[warm glacier]

yeah guess what

It was physics

I'll have to use torque I believe

[minor nest]

good afternoon
Assistance in implementation
I have a fly that moves using BT (moves to a random location)
How can I make it so that when moving it moves up and down
exclusively with the help of drawings

[limber parcel]

i suggest getting a flyswatter

[cinder comet]

is there any way to modify an actor's components and variables from the client completely clientside?
https://blueprintue.com/blueprint/qifwhf8a/
this event is from the player proxy but it seems as if these changes affect other players in game

[thin panther]

oh you mean bullet drop and stuff? that can be done witha series of line traces or a projectile

[thin panther]

#gameplay-ai

#gameplay-ai

[devout dove]

Why is add relative rotation locked to 90 ?

[prisma stag]

Just so that I don't re-type this I just want to post this link here so I could hopefully get some help. Thanks. https://forums.unrealengine.com/t/upgradeable-ai-parking-lot/586089

[devout dove]

When I used UE4 I could freely move my text inside the canvas and in UE5 I can't why?

[thorny acorn]

is it because you chose out-hit component instead of actor?

[thorny acorn]

on UE5 widgets bps don't automatically have a canvas anymore

[devout dove]

But it looks like it wraps my text in some sort of a box

I added a widget and also my touch controls stopped working nice

[devout dove]

Can anyone help or am I stuck with this for a week now? 😦

When I uncheck the "add to Viewport" it works, I can fly around. When I connect "add to viewport" then I can click on the widget but I can't move my pawn

[fleet cedar]

Help please!

Why no trace result

[serene pike]

Why do I get 'accessed none trying to read' when I use remove from parent instead of remove all widgets (Doesn't show up when I use removeall)? Is this something that you'd need to see the BP for or am I just not using it right

[surreal peak]

You usually need to specify the InputMode. Somewhere central preferred. That can either be UI, Game or Game And UI.
Your case sounds like you want to set Game and UI

[surreal peak]

You get Accessed None warnings when you access a Null Pointer.

Or in BP terms an empty reference variable

Or pending kill fwiw

But I think then it actually says it's pending kill

[serene pike]

Then it must be that I can't tell the difference remove all and remove from, any idea on how I would go about making it work?

[surreal peak]

Uff that looks horrible haha

The blue wires are for example interesting here

The ones that go out of the screen

Usually you have to keep track of the return value by saving it to a variable

If you have to keep track of more than one then it's also a case for a array

And then you can use that variable to call RemoveFromParent

[surreal peak]

Yeah that is a really really bad setup

[serene pike]

It was previously removeall for each of those remove froms, but the one who made this didn't consider the UI that I would put in

[surreal peak]

E.g. you are calling RemoveFromParent on 4 different return values, where in the first case the other 3 aren't even existing yet

[serene pike]

so if I were to do an extra branch on each to see if they exist it could work?

[surreal peak]

You should save them into each their own variable

[devout dove]

Hi, thanks, will this also allow me to move and press buttons? Like for example in other mobile games?

[surreal peak]

And then check these variables for when they are valid (with IsValid) and only then call remove on them

Again the setup you have there is really tricky to patchwork like this

[surreal peak]

Mobile games use specific on screen constrols which UE has some special UI for. But you should be able to interact with UI too

[devout dove]

Where can I fund the special UI?

[surreal peak]

E.g. your setup if the value is below 15 adds both widegts and tries to remove them again. You should rethink this whole part of your code. You won't get happy with this otherwise.

[tawdry surge]

On tick with delays too

[devout dove]

You mean this circle thing? yes all of this works until I use a widget

[surreal peak]

Probably cause your widget fully overlays the screen

And takes the touch input away

[devout dove]

But how do I make it small then?

[surreal peak]

Idk what your widget is

[devout dove]

Do I need to make the widget the size of the text?

[surreal peak]

But one option is to ensure that the visibility of that specific part of the Widget is hit test invisible

[devout dove]

It shows only the speed of the air plane

[surreal peak]

This covers the whole screen?

Why?

Where is the text supposed to be?

[devout dove]

Idk I added the TEXT and it made it so big

[surreal peak]

Yeah cause you have no parent widget that constraints the size

[devout dove]

In UE4 when i dragged text into the canvas it was like a tiny element

[surreal peak]

Then wrap it with a canvas

Rightclick it and go to the wrap option and select canvas panel

[devout dove]

this?

[surreal peak]

Wrap with

Right above it

[devout dove]

aa ok

[devout dove]

Thanks 😄 Did they change this or did I do something wrong?

[surreal peak]

Idk but if you didn't remove the canvas then they might have changed it so that newly created widget don't have a canvas panel anymore

Cause they aren't always needed.

[hybrid horizon]

Yeah, UE4 came with a canvas on new widget, UE5 does not

[devout dove]

Could you give an example when?

[surreal peak]

I usually only have it in my main widget that I add to the viewport

Any nested widget I don't use them for

[devout dove]

So you put a widget into a widget?

[surreal peak]

That's how it's meant to be done yes

You cut your UI in smaller reusable widgets and put them into each other

As opposed to having one giant widget

[devout dove]

So like with classes? It extends/inherits ?

[surreal peak]

They partially support inheritance

Like similar to BPs

[devout dove]

I thought one widget is better than multiple widgets

[surreal peak]

The design tres doesn't allow extending it in child classes. But you can put one widget into the other. A text is also just another widget

[surreal peak]

Na

There is obviously limits.

[hybrid horizon]

Think of it kinda like a shelf. Your main widget is the shelf system, all the other widgets you place onto the shelf

[devout dove]

So I should separate them like "Airplane stats" "chat widget" "buttons controlls" etc?

[surreal peak]

Yes

[devout dove]

But I will still show them all :x

[surreal peak]

InventoryWidget, InventorySlotWidget

That's fine

[devout dove]

I mean I understand "Inventory" etc

[surreal peak]

You also have a character with multiple components :P

[devout dove]

Because inventory is like a window that opens

[surreal peak]

And not a character with everything in it

It's not about opening and closing

It's about makingg sure your code is designed in a way that Objects handle themselves

[devout dove]

multiple components? I have a Base pawn and then i inherit from it to make like JET and Bomber planes

OH so it's like convenience and not like a performance thing?

A ye i know this from webdesign 😄 You create modules or components

So like Facebook is done in React and it's split into components

[surreal peak]

React uses the same sort of widget-like setup

Where you split your UI into self contained and reusable components

One widget might be your whole HUD. But the elements inside or widgets themselces

E.g. a timer

A health ar

Bar*

A weapon selection

Ammo counter

Capture the flag indicator

And what not

Crosshair

You make single userwidgets for them and code their logic there. And then you add them to the bigger HUD widget

Keeps things clean and easily extendable

And those single userwidgets might have other userwidgets in them again. Depends on the specific case

[devout dove]

Can I also make a widget some sort of a "template"? so if I have like a flag indicator and split it into A B C bases so it displays A B C

[surreal peak]

Widgets can have variables exposed on spawn for when you create the runtime, but also instance editable so the variables will show up in the details panel

So you can make one widget and give it a text variable that you use for the text

Add it 3 times to the HUD and give it 3 different texts

You do have to somehow hook up the widget instance with which flag it represense but that's a different story

That's usually what you do with custom buttons

Where you have a fancy custom button user widget with a text and other variables exposed

[devout dove]

So something like if you click on an item in your inventory and it shows stats etc?

[surreal peak]

And you can use Event Dispatchers to forward the button press event etc

Yeah for example

Or a buff icon with cooldown

Where you add it runtime when you get buffed and the text shows the time remaining and the icon behind it of that buff

So a WB_Buff in a WB_BuffRow widget where the BuffRow takes care of creating and adding the buff widgets to itself and you place the BuffRow onto your HUD where you need it

I will head to bed now though (: I'm sure you'll get behind the best usecases for splitting your UI into multiple widgets

[devout dove]

Ok, good night, it helped a lot, Thanks 😄

[ancient siren]

alright, before i get started- I AM NEW
so i want to check to see if you are hitting a coin, and if you are, it adds up. i already tried testing to see if the collision is being triggered or wtv (by putting a print string after true) and it didnt do anything. idk if im using the right out hit hit something or another, and yes the player does collide with the coin (if you were wondering)

[thin panther]

does the coin react to a visibility channel?}

[ancient siren]

wdym?

[thin panther]

in your collision

[ancient siren]

the sphere trace?

[thin panther]

no

the coin

[ancient siren]

there are no collision checks or anything in the coin

SORRY I AM LITERALLY CLUELESS LMFAO

[thin panther]

no, but your coin needs collision

does the collision react to visibility as well as your other things like the player

[ancient siren]

i think so

[thin panther]

check

[ancient siren]

idk what u mean when you say that it can react to visibility

oh nvm i see it

in the collision presets

[thin panther]

ye

[ancient siren]

yeah it is overlap all

[thin panther]

needs to be block all

[ancient siren]

i j tried that a sec ago

[thin panther]

a trace only hits blocking objects

you could try checking when it overlaps with a collision sphere or the player's collision perhaps?

[ancient siren]

the coin has a collision sphere and it is block all so i dont know why the players sphere trace isnt detecting it

[thin panther]

set coin to overlap all, then OnActorBeginOverlap on your player check if it overlaps

if it does voila

whats the setup for your sphere trace look like

[ancient siren]

is the node just called onactorbeginoverlap?

[thin panther]

its an event

you just want one that checks if you have overlapped the coin

whether that be specific to the capsule collision or actorbeginoverlap it doesnt really matter

[ancient siren]

ok so in this check am i doing it in the player event graph or the coin's

[thin panther]

you could do either

chekc in the coin if the player overlaps

but it would be better in the player likely

[tawdry surge]

@thin panther traces do not only hit blocks however a block will stop the trace from hitting anything else

[thin panther]

oh is that so?

in that case its probably blocking on the ground first

i thought it was only the multi that reacted to overlaps

[tawdry surge]

Overlap let's you use multi trace and check through walls etc..

Regular should too, but it only returns the first one so it doesn't matter

[thin panther]

ah fair enough

anyway

[ancient siren]

alr would this be right

[thin panther]

its possible the sphere trace is reacting to the ground or player then

[thin panther]

no

why are you binding an event

[ancient siren]

i have no idea

[thin panther]

there is a node for overlapping

[thin panther]

yes

also you dont need to do the set afterwarss

afterwards*

its not harmful but it is redundant

[ancient siren]

alr

im gonna try it rq

[thin panther]

the little diamond connection means by reference, so you directly modify the variable rather than a copy

[ancient siren]

ohh ok

[thin panther]

so you are doing
coins = coins + 1;
coins = coins;

[ancient siren]

lmao ok

btw it didnt work

[thin panther]

show the collision setup for the coin

[thin panther]

so if that isnt on overlap it wont overlap the player

[ancient siren]

alr i tried overlap and it still did nothing

[thin panther]

show again

[thin panther]

and the player bp

[ancient siren]

there isnt actually like

any collision stuff

on the player

now that i think about it

that may be a little bit of an issue

[thin panther]

there has to be

for a character

[ancient siren]

theres a collision cylinder

[thin panther]

show it

[ancient siren]

btw this is a flying gorilla game

"floating monkey simulator"

[thin panther]

scroll down on that capsule and click the plus on begin overlap

[ancient siren]

alr

should i just make a collision sphere on the head?

that is where the sphere trace is

[thin panther]

could do

and use the overlap event for that sphere

[ancient siren]

uh oh i think ue crashed

nah wtf

its not letting me minimize it

and i tried win d and the lil button at the bottom right of my monitor

ok i restarted it and did the begin overlap for the collision sphere on his head

@thin panther

this doesnt work

[thin panther]

print a string on cast failed

also how do you know it isnt working

you arent showing the variable anywhere

[ancient siren]

ok that worked

[thin panther]

so the cast is failing?

[ancient siren]

yes the cast is failing when i collide with anything besides the coin

which is good

[thin panther]

then its working

[ancient siren]

wait im gonna try smt rq

this is the text

for the hud

that shoiws you

how many coins you have

[thin panther]

ok?

[ancient siren]

well you said this

[thin panther]

well ok

but if the cast isnt failing on the coin

then it works

[ancient siren]

the coin definitely hits his head

idk why it isnt working

[serene pike]

I've got what I'm sure is a very simple problem, but it's been stuck as an issue for a long time now: I'm simply trying to move components of a blueprint after rotating a valve. Valve works fine, it will do everything except move those components. Anyone able to clue me as to why I can't get it to work?

[ancient siren]

OH SHIT IK THE ISSUE NOW

IT DOESNT MOVE WITH THE COIN

I HAVE TO MAKE THE SPHERE A CHILD OF THE MESH

i got it to work

!

[mental trellis]

Caps is bad mmm'kay

[astral epoch]

Okay getting an "Accessed None trying to read return value" error on this SpawnActor node.
Weird part is that the actor does spawn in game and the array shows that it was populated.

Ideas?

Hell even dragging off the return value and doing an is-valid returns true.

[mental trellis]

Are you sure it's the spawn node returning an invalid ref? Not one of the inputs in to the spawn node?

[astral epoch]

Specifies that node.

Actually hang on

[mental trellis]

GetPawn is the one erroring?

Well, GetControlledPawn

[astral epoch]

Maybe

I'll double check that

[mental trellis]

No other node even has Pawn in the name.

[astral epoch]

Yeah misunderstood when it was telling me the problematic node was the SpawnActor itself.

Oddly, the transform works even without controlled pawn.

[mental trellis]

SpawnActor has the error, but it's caused by get pawn!

Transform on a null actor would just be a default transform

0,0,0 0,0,0 1,1,1

[astral epoch]

That would make sense.

Yeah giving it a make transform with default values seems to clear the error so I think you're right.

Good catch, thanks

[mental trellis]

nP

[serene pike]

@mental trellis sorry to bother, I've just got what I assume is incorrect casting? Any chance you could have a look?

[tawdry surge]

Thats my guess. Where are you setting the water rise actor ref

[mental trellis]

I'm not sure, but MoveComponentTo might be a node you need to keep calling every tick until it's done (or use a timeline)

I really have no idea, sorry.

However.

[tawdry surge]

Nah it runs itself

[mental trellis]

If you just want the plank to raise with the water

Just parent the plank to the water.

[serene pike]

It's just an actor variable I made to put on the cast to since it needs something there

not using it anywhere else

[tawdry surge]

So it's empty

[serene pike]

Yes

Clearly I don't understand cast to, as that often seems to be a solution

[mental trellis]

Do you know how classes work?

Like the onion or hierarchy system?

[serene pike]

nope

apologies for my lack of knowledge

Couldn't find a video that simply shows how to move a blueprint with another blueprint

so I can't seem to search for the right things either

[tawdry surge]

Casting is changing the level of classification of a variable. You are an object("actor" in unreal), organic, human, a race, a gender, an individual. varying information applies to each of these classifications. The concept of death applies to all organic things. The concept of your house only applies to you the individual. The level of classification determines the available information. If I have an object type reference to you, I can access object(actor) level information (such as location). If I cast to the organic level, and if you are organic, then the cast will succeed and I can get that organic level information.

[mental trellis]

Okay, so, you have a base class in UE, it's called Object. Everything is a subclass of Object. When you subclass an object, you add stuff onto it and make a new class (or blueprint.) So everything in the base class is there plus your new stuff. You do that again and you get another load of new shit in your third class.

[astral epoch]

Its okay we all start out somewhere.

[thin panther]

i also like to think of a cast like a type check, it takes a general actor reference and makes sure its the specific thing we need

[mental trellis]

Because, let's say, your blueprint (I'll do it SeaBP for now) is based on Actor and Actor is based on Object, you can use variables of type Object or Actor to store that copy of your SeaBP

[thin panther]

like okay, i cant tell its an actor, but what we need is a house, so is this referencing a house

thats a cast

[mental trellis]

But if you have a variable of type Actor and you want to see if you've stored a SeaBP in there, you cast it to the subclass and see if it works.

But it could, in theory, be any other type of actor or subclass of actor.

Unless you need to move up and down the hierarchy like that, you don't need to use Cast

[serene pike]

I thought casting was just allowing variables or other things from one blueprint to be used in another

[mental trellis]

Nope.

Casting changes the type that the program sees your variable as - if it's not compatible with the type you suggest, it will fail.

[devout dove]

I have a weird movement bug, not sure if it's because of touch (mobile) or if it's just UE doing this.
So I have a Airplane and when I move left or right (add local rotation) the plane doesn't really move just left but it has some weird slight rotation to it

[mental trellis]

Rotation doesn't move something. It rotates it.

[devout dove]

I fly the plane left and right so I move the plane forward and turn with it so it's not just rotation but movement smartass

[mental trellis]

That doesn't mean shit if your movement isn't based on your plane's rotation.

[astral epoch]

Now now children

[mental trellis]

Which axis are you rotating around? Yaw, pitch or roll?

[astral epoch]

I suspect this is where the idea of "cast to use a blueprint in another blueprint" comes from.

If the cast succeeds then that means the object you're plugging in is of that type or a class derived from that type.
Basically you can use the functionality and variables of the class you're casting it against. Which is why the output pin from the cast allows you to call said functionality.

[devout dove]

Z Yaw

[mental trellis]

You have grasped casting 100% successfully.

[mental trellis]

And how do you move your plane?

[thin panther]

yes i commonly see people being confused when they dont know what to plug into the object of a cast, and get confused when we say that you already need to have a reference to the object to cast it

[worthy jasper]

Hey everyone my apologies for jumping in here, scratching my head on this one wonder if anyone can give me some help. I have a class that is attaching the skeletal mesh to my first person arms. This is working fine on a server/host but the client has the wrong rotation. I had set it to snap target to fix this on the host (orignally had this issue on the server too) but snap target does not seem to be working for the client. Any ideas?

[thin panther]

i remember those days, casting confused the hell out of me until i learned oop independently

[astral epoch]

There's a thing to note here too; if the object you're casting is a child of the class you're casting against, example here would be a character object tested against a pawn cast, it will still succeed because a character (being a child of pawn) will contain everything the pawn has. You'll only have access to the stuff in pawn though, because the cast doesn't know if you're pawn or something derived from pawn.

[serene pike]

So what would I need to do to to make the objects in one blueprint be able to move after something happens in another? Can't really visualise it from the explanation
Having my entire understanding of something I thought I was sure of change only makes it more frustrating 😐

[mental trellis]

A lot of people seem to think that casting is will search out an object from the game and just use it somehow.

[thin panther]

yeah i did too when i was a newbie jumping in without trying to learn it

[devout dove]

Oh damn, thanks for the help... not

[mental trellis]

Why are you changing the owner?

[thin panther]

but in hindsight it seems really dumb when you learn, because how would the game know what you want if theres more than one

[worthy jasper]

Im setting the owner. Seting the weapon to be owned by the player

[mental trellis]

I think it's a really key question in your plane not moving correctly, to be fair

[thin panther]

cant have a magic solution, you kind need to show some code

if the movement isnt working, how can we diagnose without knowing how you made your plane move

its like trying to get the doctor to give you medication for your problem without ever talking to him

[mental trellis]

I'm more questioning why it isn't already owned by the player.

[astral epoch]

I saw a lot of really bad misconceptions when I was at University because most people were going in as designers or very high-level scripting rather than computer scientists. The lessons never focused on programming principles either so I think everyone took a "if it does what I want it to at a surface level then that's good enough" approach.

[worthy jasper]

Because it was just spawned by the server

[devout dove]

I found the issue but don't know how to solve it, so my plane has a spring arm and a camera, I have the camera little above my plane so it looks cooler. But it actually causes the plane to fly weirdly and adds some rotation. I don't understand how to fix that

[thin panther]

yeah my course that used unreal engine in college only really covered principles at the end of the second year, which was a bit late when we had spent a year in the engine

[astral epoch]

Lucky you actually getting taught principles haha

[thin panther]

i think its very important to learn programming for this stuff, because ti really helps with the abstraction and decomposition of problems

[astral epoch]

That said, its always fun teaching people what the different design patterns are and how to use them.

[mental trellis]

When you spawn stuff, you can set the owner on the spawn parameters, I'm pretty sure

[astral epoch]

Like their eyes have suddenly been opened to much easier ways of doing things

[thin panther]

i say taught, the teacher did nothing all lesson and we had to get our assignment altered the week before handin, basically we got pity grades and the teacher was let go

my uni is much much different tho

10/10#

[mental trellis]

Lol

[astral epoch]

ignoring my hilariously awkward stumbling through the engine right now, that's a design issue more than anything

[thin panther]

oh yeah thats what it was like for me, i swear it was like opening a 3rd eye

[worthy jasper]

suppose you are correct, not sure that would solve my issue though? im not sure XD

[thin panther]

nto even having to touch a tutorial in ages

[mental trellis]

Might do. Who knows the gremlins you might encounter with replication.

[astral epoch]

Ouch. I had a tutor like that, first time any of us used C++ and the guy had literally no idea how to program in it so we all pretty much self-taught the language.

[serene pike]

Before I try, from first person character can I make normal objects in a level move? It sounds like it'd be much easier than faffing around with multiple blueprints

[mental trellis]

It migth skip our replicating something because of race conditions.

[thin panther]

im now imaging that replication is done by tiny flying gremlins from server to client

[worthy jasper]

hmm ill give it a go, got nothing too lose

[thin panther]

thank you for that

[astral epoch]

What do you mean by "normal object" exactly? An actor?

[thin panther]

yeah i self taught myself c++ throughout that time

although it did help for uni

[mental trellis]

https://en.wikipedia.org/wiki/IP_over_Avian_Carriers

[serene pike]

static mesh actor

[devout dove]

Found the solution, not sure how many bugs it caused but for now it will do

[worthy jasper]

that did not work sadly 😦

[serene pike]

From what I thought I was aware it would just be casting to level blueprint in order to be able to refer to those objects

[astral epoch]

I got surprisingly good grades on that assignment, interestingly enough. And I have done C++ projects before, I just use Blueprints for the prototyping first.

[mental trellis]

What was it? Not using your plane's forward vector?

[thin panther]

is that legit, i feel like im being really gullible xD

[mental trellis]

Can you even cast to a level bp? Those things are like in a zone of their own.

It's legit, brother.

[thin panther]

you cannot cast to a level bp

[thin panther]

"Unintentional encapsulation in hawks has been known to occur, with decapsulation being messy and the packets mangled."

oh my god

[serene pike]

Oh right, forgot you couldn't, tried that earlier today

[thin panther]

this is amazing

[hazy plover]

I have a problem with the blueprint that was left on the map, although it is removed in the files, so the game crashes and I can't do anything, any ideas?

[serene pike]

In that case, are you simply able to cast to a static mesh actor from a blueprint that isn't level blueprint

[mental trellis]

Are you unable to select it? (to delete it)

[thin panther]

if your bp needs to move its better off in an actor class

a static mesh is exatly that

a ....static... mesh

unless its something like picking stuff up with physics

like grabbing an item

[hazy plover]

I can click on it, but there are no options

[thin panther]

if its something more general, like a moving platform

[mental trellis]

Static Mesh = geometry/model. Static Mesh Component = renders said static mesh. Static Mesh Actor = houses that component in the world.

[mental trellis]

Delete key?

[thin panther]

god its like Blueprints, Blueprints and blueprints

one being a laguage, one being interchangable with actor and the otehr being used by construction workers

[mental trellis]

The "static" part of the static mesh means the mesh itself is static, not that its actor is. I.e. It has no moving parts, it's not a skeletal mesh, etc.

[thin panther]

yes thats my bad

what i meant was more

[hazy plover]

It doesn't work

[thin panther]

a lot of things that need to move are better off in actors

as they tend to be reusable

and encapsulation etc etc

[mental trellis]

Try selecting multiple actors with your broken one and deleting them all?

[mental trellis]

Nothing in a level isn't inside an actor. Except actors themselves.

[thin panther]

again my bad on not being more specific

it should be in your own custom subclass of actor

e.g. subclassing an actor for a moving platform

for reusability

the terminology is like walking on eggshells 😅

[serene pike]

So why doesn't this bp set work?

all because I used an actor variable to fill the cast object?

[mental trellis]

Who knows?

You've only got 1 debug output there.

Add more.

[serene pike]

debug output?

[thin panther]

can never get enough print strings

[mental trellis]

Pring strings

[serene pike]

ah

[mental trellis]

Are you sure your plank isn't starting at the coordinates you've given?

If it's already there, it won't move.

[serene pike]

yep, it is the casting

interesting way of finding out

[mental trellis]

Change your variable type to be the correct type and you won't have to cast.

[thin panther]

is there actually anything in the actor variable by chance

also that

[fleet cedar]

How do I cancel this out? The second connection doesn't restore movement to my character

[silk hinge]

You mean like doing a .5sec line trace and then doing another with another angle something like that ?

[thin panther]

self is a player controller right?

[fleet cedar]

yes

[mental trellis]

So what is the problem, exactly?

Does the second bit even trigger?

Have you added a breakpoint to check?

Or a debug string?

[fleet cedar]

It doesn't, the mouse won't disappear even

Not sure why

[mental trellis]

So the key press doesn't work?

[fleet cedar]

it does, but then the release doesn't even work -_-

[mental trellis]

Probably because the key press is part of the game input mode

[mental trellis]

So making it UI only, you're disabling your input binds.

[fleet cedar]

I see

You're right. So how would you do the same thing? Just disable input on the player's mesh?

I liked how it stopped the player moving before

[serene pike]

If I want to get static mesh components stored in a different blueprint to reference in another bp, what do I put in the cast to so it succeeds?

[thin panther]

that different bp

[mental trellis]

Set input made to game and ui and set an additional bool to false (enable player controls - check on every input)

[thin panther]

cast to the other bp -> get the mesh

[mental trellis]

Or just let people move their characters while in the menu (unless it's a full screen menu)

[thin panther]

i do like being able to move and edit inv ngl

[fleet cedar]

This is working for now

Thank you

[serene pike]

It'll only allow me to get the entire bp when choosing the object, I can only refer to the water and plank I need on 'as BP'

[thin panther]

Ok

So get the full bp

Then get the mesh reference

You cant cast to the component

[mental trellis]

You could get the nth component from the base actor reference and cast that.

(just to be pedantic)

[thin panther]

Cant beat being pedantic

[mental trellis]

Technically correct is the best kind of correct.

[thin panther]

Of course

[serene pike]

nth component?

[mental trellis]

1st, 2nd, 3rd, ..., nth

[faint pasture]

Line trace per tick

[mental trellis]

n represents any number.

[silk hinge]

Oh I did not know this node thanks

[faint pasture]

Velocity = Velocity + Acceleration * DeltaSeconds
NextPosition = Position + Velocity * DeltaSeconds
Trace from Position to NextPosition, process hit if it happened
Position = NextPosition

[mental trellis]

suvat all over again

[thin panther]

Aha but what if n is 1
Ya cant have a 1th anything

[mental trellis]

or the 2th thing...

[faint badge]

You're missing a * DeltaSeconds when adding the acceleration

[mental trellis]

3th?

[thin panther]

should be nst/nd/rd/th

[silk hinge]

I will definitly write that to remember thanks

[thin panther]

Much easiee to write

Really flows off the tongue

[serene pike]

What would I set as target?

[faint pasture]

Whatever you want, however you want to get the BP_Water_rise

line trace, get actor of class, already have the ref, whatever

[thin panther]

Again you are fundamnetally misunderstanding casts

[serene pike]

Yes I'm sure I am

[faint pasture]

Bruh I have to say that almost every day.

[thin panther]

You need a ref to BP_water_rise, then you cast to it, then you can access its components

[mental trellis]

@serene pike this isn't a class problem, this is a composition problem.

You can't cast an object to get a part of that object.

[thin panther]

Since water and plank arent bp water rise, nor are they the parent of it, they cannot be used to cast to it

[mental trellis]

You have to cast the object and then get what you want from it.

[serene pike]

Tutorials just seem to show a way of using things without explaining, and I took the word from college tutors as being what it is so years of belief is wrong

[faint pasture]

Hence my name

[mental trellis]

If these nodes were the opposite way around, it would work.

[thin panther]

Read Adriel's name again lol

Damn they beat me to it

[mental trellis]

Cast on the left, those nodes on the right.

[serene pike]

Yeah that's what had me mention it

I've no idea where to properly get the information

[trim matrix]

what are you trying to do again?

[mental trellis]

Tutorials on object oriented programming and polymorphism is what you want.

[thin panther]

Yes learning oop here is what you need

[serene pike]

I can't cast to plank or water though, so how would I mention the static mesh components in the first place

[trim matrix]

also what is the point of the sequence node? Over just chaining things together

[thin panther]

Learning the principles of the type of programming the engine uses is essential to using the engine

[faint pasture]

@serene pikeCasting is a question. It's checking if a thing of one type is another type.

Say you had a line trace. It hit something. All you'd know is that you hit an Actor. What if you wanted to know if you hit a door or a pawn or a tree or a wall? You would cast the ACTOR to the specific subclass you want.

[thin panther]

Thats why i disagree with the allure of "make games without code"

[mental trellis]

Ghettoprints

[faint pasture]

Say you have an Animal. You want to make it bark. Well, only Dogs bark. So you'd cast the Animal to Dog to see if it's a dog, and if it is, then you can do Dog stuff with it.

[trim matrix]

I always wondered why a linetrace or collision event can't just return the correct type right away

[serene pike]

From that analogy all I get is that I need to cast to the bp itself 😟

[faint pasture]

You have an Actor. You want to do BP_Water_rise stuff with it. You cast it to BP_Water_rise to check if it even is one of those, and if it is, you can do BP_Water_rise stuff with it.

[thin panther]

Yes because thats what you need to do

[trim matrix]

Instead it just goes "lul I hit actor cast it now bozo"

[mental trellis]

The fact is, you have to start with the Animal in the first place or you can't do anything.

[faint pasture]

Because it has to return something of a type.

all you're guaranteed is that it's an Actor

[trim matrix]

Okay, then return the right type right away

It's not like the engine doesn't know anyways

[thin panther]

Thats not how that works

It doesnt know is the thing

[serene pike]

Assuming I'm using the correct technical terms then: how do I move statich mesh components in one blueprint using a different blueprint?

[faint pasture]

I mean you could return the type in the trace, but then you're just moving the cast to the trace side of things and now all your traces are doing all this extra work.

When you very often don't care what type it is.

[thin panther]

Cast to the blueprint then get the components, and move them

[trim matrix]

What I don't get is why if a linetrace happens the hit result just has a pointer to that actor but isn't smart enough to auto-cast it to the correct type
99% of the times the first thing you do on a hitresult is try to cast it to something

[solar sequoia]

it's something like it always needs to cast, and it not casting by default is it giving you the option for cases in which you wouldn't need to. Line tracing on animation timing for foot step sounds, for an example of when you don't need it

[faint pasture]

Gameplay-wise, what are you trying to do

[faint pasture]

I do up to 2,000 traces per tick and casting is not a thing for any of them.

[serene pike]

Rotate a valve (works) to make water and a plank move upwards

[faint pasture]

In my case, I just care about the distance

[serene pike]

Everything being in first person character

except the custom event

[mental trellis]

This is correct, but you're missing a step. You have to start with something to cast. A variable that has been assigned a value.

[faint pasture]

Break it up. Don't directly rotate the valve. Have some timeline that gets played based on an Activate event.

[trim matrix]

Your very specific situation isn't the point here

[solar sequoia]

are they all just for distance? I know it's just a query, but isn't the overhead on 2k somewhat high?

[trim matrix]

There is zero reason a node like GetActorType doesn't exist

[faint pasture]

Nah Unreals collision system is pretty robust. It's for line of sight calculations.

I also do it in a tight loop and not spread out over thousands of actors.

[solar sequoia]

I know line traces are somewhat free, but I never guessed more than hundreds per tick was free

[faint pasture]

and in C++. In BP it was over 100x slower, and it was all in the math. The trace was just as fast.

[solar sequoia]

the reason is that it would need to cast in order to get the type, probably

[serene pike]

What would this change though? Everything works fine up until when I try to refer to the water rise bp to move the other objects.

[faint pasture]

2k is a worst case scenario, it varies a lot throughout gameplay. Also, the scene they're tracing against is all in 2d so I'm assuming there's a lot of octree pruning happening.

[trim matrix]

Pretty sure the engine knows what the underlying type is

[solar sequoia]

yeah but if it was set up to communicate that value, then it would do so

[faint pasture]

How do you want to GET the water BP?

[trim matrix]

Why wouldn't it be though, again @solar sequoia

[faint pasture]

Just all the time, with a line trace (interaction style), with some overlap, what?

[serene pike]

Just took a step back from that

[mental trellis]

Because it's a generic node and the output needs a specific type. That's how BP works.

BP is shit like that.

[faint pasture]

What is the SPECIFIC gameplay thing you're doing. Tell the story, the player does what, and what happens?

[mental trellis]

No dynamic typing.

[trim matrix]

exactly @mental trellis I was about to write that

ohhh c++ has auto that's correct

[mental trellis]

Even c++ is strictly typed, though, it's just more flexible.

[serene pike]

Player linetrace hits the valve, that triggers the valve to rotate, I want a nearby block of water and the plank on top of it to rise up

[faint pasture]

ok so
Line Trace -> cast hit actor to your valve class -> call some event on it

[trim matrix]

wait does something like auto treeactor = cast<auto>(ActorPointer*) exist @mental trellis ?

[mental trellis]

No

[trim matrix]

Or is that voodoo dark sorcery

[mental trellis]

That sort of shit is the purview of scripting languages

[solar sequoia]

is that a level BP kind of thing, or is that too restrictive?

[mental trellis]

Weakly typed things like php (or python?)

Is python strongly typed?

[serene pike]

I see now it knows about the valve because of the linetrace, but I can't think of how to mention the other

[solar sequoia]

you can reference instanced actors to call custom events. Would probably make your life easier in this case

[trim matrix]

Still, the engine knows about that pointer and all it's properties so technically it could exist

[mental trellis]

At runtime, yes.

At compile time it does not.

[trim matrix]

True

[serene pike]

I've got an event in bp rise but I'm blank on how to refer to it in any way

[mental trellis]

That's why interpretted languages like php can do that.

[serene pike]

custom event that is

so I'll assume that's not what you mean

[trim matrix]

Wait tho if I'm referencing a pointer to some actor in the world (when casting to it) the cast has to happen after the actor exists

ergo the engine would know about it at runtine wouldn't it?

[mental trellis]

But that's irrelevant.

[solar sequoia]

you need a reference to an instance of the BP that the red event node is placed in

[mental trellis]

It's the node that does the casting. The node is created at compile time.

[trim matrix]

something like "give me the type of that actor, which I know is in the world because I spawned it earlier or whatever"

[solar sequoia]

you can do it in your level bp @serene pike . Probably the best way if you only need it for that level

[mental trellis]

That's just not how computers work. They can't intuit the demands of the user.

[faint pasture]

I just told you

you said you're doing a line trace

do the line trace, cast the HIT ACTOR to BP WATER WHATEVER

[wintry geyser]

@serene pike Easiest way is an Actor reference var in the Valve for the other BP, drag and drop the specific instance of that object that exists in the world as a reference

[faint pasture]

that's your test for "did I just hit the valve thingy?"

[trim matrix]

I'm literally telling the computer to give me some information he has to know at runtime, otherwise the actor wouldn't exist

No guesswork involved

[wintry geyser]

How many conversations are happening right now lol

[trim matrix]

It's 2:30am I'm dropping this semantics lol just help the water valve guy

[thin panther]

You cannot set a default value for actor refs as their memory location changes

[wintry geyser]

If the thing doesn't exist, on spawn = set reference

[solar sequoia]

I believe that his or her case is more like the valve triggers an event in a different actor

[thin panther]

yes and that solves that issue

wait no im dumb nvm 😅

[wintry geyser]

@serene pike For an actual scenario of this, check out the 'Content Examples' that UE provides

I can go through it with you in voice if you want

[thin panther]

@serene pike if you accept my friend rq i can teach you a bit about casting with diagrams and stuff, i dont wanna flood the chat

[serene pike]

That'd be awesome, thanks.

[trim matrix]

So character linetraces to the valve. If hit result is good, cast to bp_valve and call an event "rotate and activate" inside the valve. This event uses a reference to the water inside it and sets the height of said water @serene pike

You need an object reference for the water in your valve bp btw

[thin panther]

i think its better in the present moment to teach how casting works rather than solve the problem directly

because this is a fundamental concpet

and without knowing it will just happen again in 5m

[trim matrix]

this isn't #cpp so we're not gonna blast the poor guy

[serene pike]

@wintry geyser just hopped in parlor

[trim matrix]

but yeah some oop practice could help

[worthy jasper]

any ideas?

[trim matrix]

casting used to confuse the shit out of me as well. Helps to know ways to get a reference tho, like a trace for instance.

[wintry geyser]

People over-explaining shit is all. lol

[hybrid horizon]

That's exactly what I was thinking when reading through this

[trim matrix]

well yea but casting from a button to a lamp for instance that does something can be quite confusing for people. Cause how will the button get the reference to the lamp?

[icy dragon]

Casting = try to treat something as one particular class

[trim matrix]

and then people are like ''casting bad use bpi'' and they get even more confused lol

[icy dragon]

Pedantic guys can cringe all they want

[wintry geyser]

By creating a reference variable to Object 2 inside of your successfully interacted Object 1 , then set that reference by public pointing to it, or any method you want really.

[trim matrix]

yea once I figured out you can make variables public and manually put shit in there from the editor my mind was blown lol

[wintry geyser]

For real. Seriously don't skip Content Examples.

[icy dragon]

In some cases, yeah.

[trim matrix]

from what ive gathered as long as you dont do it on tick its alright? I have no idea I barely cast anymore. bpi's are so usefull lol

[icy dragon]

Casting something already in memory is practically harmless, really.

[zealous moth]

@icy dragon yup

[trim matrix]

like if you made it a variable? oh alright

[wintry geyser]

Yeah, didn't we already prove that the cpu cost is negligible, and the thing you really need to worry about is AMOUNT of different actors/components, so it mostly can be memory intensive.

[blissful grail]

Sanity check - shouldn't Attach Actor To Component lock the actor to follow the components location?

[wintry geyser]

Also, you don't need to cast if your public var is lean to the specific class you're calling. If your reference var is just 'Actor' then yeah you'd cast and have that reference be the Object input.

Example: If I interact with a light switch and want it to turn on a light that exists in the map, I just set the light as an object reference of that specific actor directly in the 'light' public var and call an event off of it, no casting necessary.

Like this

[trim matrix]

@blissful graildid you set snap to target?

[blissful grail]

Yes

[trim matrix]

can I see the whole BP?

[trim matrix]

@wintry geyseroh thats sick I didnt even know that

[blissful grail]

It works as expected if I do actor to actor though. But for w/e reason, attaching to the component is not

[trim matrix]

then do actor to actor? 😄