blueprint

[sharp rapids]

But it does not get garbage collected because the 'Outer' object that I passed in while creating it still seems to reference it

So, I also have to destroy the 'Outer' object and then it get garbage collected. Can the reference be removed in the Outer object?

[obtuse herald]

UObject holds a reference to Outer, but Outer holds no reference to UObject

[sharp rapids]

But it stops garbage collection
I have an Actor BP which is the Outer Object while constructing. The created object only get garbage collected if the Actor BP is also destroyed. Only setting the Object reference to null does not collect it

Or maybe I'm doing something wrong

[sharp rapids]

This is what I'm doing

[wicked osprey]

What is it?

[obtuse herald]

Construct node still holds a reference to the UObject

[obtuse herald]

Call it 'myvariable_protected' or something instead of 'myvariable'

[sharp rapids]

I'm confused.
But you have to use that node? How else would an object be created?
Also, how does a node hold a reference?🤔

Wouldn't that make it impossible to release the reference then?

[faint pasture]

Is that BP an Actor? Just spawn it if so.

[obtuse herald]

Reference gets released if you call the node again. Manually setting it to null via set var by ref should work aswell

[gentle urchin]

Are those blocking refs?

the return values on a node?

I somehow imagined them being an exception to the garbagecollection system

[sharp rapids]

By calling again, you mean calling 'Construct Object' again right?
Then that would create a new object?

[gentle urchin]

Yes, and release the old one

[sharp rapids]

So there's always going to be at least 1 reference then

got it

[gentle urchin]

you can (apparently, maybe?) do it like this

to clear it out earlier

[sharp rapids]

The BP in the image is an Actor, but what I'm spawning is a custom class derived from Object

[vital aspen]

A question, I was working on my project when I wen to add some things to the PlayerController just to find it that the project is setup for that, It's just that I can't find it.

No matter what I do, That file doesn't exists.

[sharp rapids]

this works
So, the 'Construct' node acts like a variable in itself
I didn't know a node could do that 🙂

[merry moth]

That still didn't work so i tried bitshifting in blueprints... Flloored my ram to 32gb crashed my engine so i just made a blueprint node....

int USeedGen::GenSeed(int worldSeed,int chunkX, int chunkY)
{
    int h = worldSeed + chunkX * 374761393 + chunkY * 668265263;
    h = (h ^ (h >> 13)) * 1274126177;
    return h ^ (h >> 16);
}

Was just... alot easier

That was the first time i ever had a huge headache in blueprints

[obtuse herald]

Hahaha

[merry moth]

I actually have no idea why the same stuff in blueprints just fucked up

Could be a UE5 thing tbh

[fiery glen]

scam link, do not click

[gentle urchin]

discoerd sure sounded tempting

[thin panther]

Idk my fav was discorb

[gentle urchin]

i would think biscord was more up your alley tbh

[thin panther]

Havent seen a biscord, but my all time fabs were discorb and streamcommuninty

[faint pasture]

Construct returns a reference to the UObject, when the reference is gone it gets GC'd. You could also save it into a variable to accomplish the same.

[gentle urchin]

I just always naively assumed that return pins on nodes where somehow excluded as hard references

Having to manually clear them is.. interesting

[sharp rapids]

Yes, But I thought once the execution of the pin is over and you don't store it in a variable, the reference would be gone.
I didn't think it would keep the reference till the end

[obtuse herald]

It assures that you can use a reference later without saving it to a variable

And Garbage usually isn't a problem in blueprint anyways

[gentle urchin]

fair enough

[surreal coyote]

When I leave my car at an angle, this happens. How can I fix this?

Because this does not fix it

Well that fixed the character but not the camera

so this doesn't work

[gentle urchin]

Undo what you do when you enter the car

[obtuse herald]

Use set control Rotation instead

[surreal coyote]

I don't think I get what you mean

[obtuse herald]

Get player controller

-> SetControlRotation

[surreal coyote]

Like so?

[obtuse herald]

Or Driver->GetController->SetControlRotation for multiplayer

[obtuse herald]

Yes

[surreal coyote]

Thanks a ton

[tired granite]

hi everyone, can anyone tell me why physics object behave difrently depending on resolution and a way of potentially fixing this?

when i play on standalone full screen the results are vastly difrente from in editor aswell and when packaged into executable

[thin panther]

Iirc default ue4 physics are change with framerate, not sure if they ever fixed that, i remember seeing it a while back

[tired granite]

oh so its the framerate thats affecting the change?

[thin panther]

Could be, i may be wrong though, physics isnt my specialty

[tired granite]

i am making a 2d physics based pong game but the ball either gets added force very slowly or super hard

that would make sense

[thin panther]

Yeah physics change based on frames, they can start to break at high framrates

For now maybe cap the fps

[tired granite]

i will give that a go , thanks 🙂

[thin panther]

Np

[crisp vault]

hi, quick question, is it okay/proper to use the level blueprint to make events happening to the level? I.e weather events and changes

[odd ember]

if they are unique to the level, that's where you would want them

if they are part of a system, you may be better off with a weather manager

[crisp vault]

lets say its like this: weather changes, players widget and ui and stats should react to this, its still okay?

[odd ember]

that's irrelevant

[crisp vault]

okay, thanks!

[obtuse herald]

I would say as soon as you need communication you are better of not putting it in the Level BP

[crisp vault]

does communication includes only retrieving data? no, or? cause what the player will do is only ask "what the weather is" and use the data to react accordingly.

[obtuse herald]

I don't even think you can retrieve anything from the level BP

[crisp vault]

i mean we cannot change weather and all im trying is to try to object oriented thinking..

[gentle urchin]

you can send tho

[obtuse herald]

The level BP can only send

[crisp vault]

thats enough :D

cause .. all weather does is send, i mean i cannot change if it rains, but i can open an umbrella and the nature doesnt do it, i do, i hope it makes sense. Thanks guys, it clear that level bp's are exactly for systems like this.

[gentle urchin]

So a dispatcher perhaps

or a direct call to the player if its only for the player that cares about it

[crisp vault]

sort of yeah, all needed is an independent weather system which works for itself, player only uses the data to do other things

[obtuse herald]

I generally avoid level BP beyond debug

[crisp vault]

mind elaborating why? i thought about making an extra bp with a huge trigger box, and do exactly that, so far i started with lvl bp, but i gladly change my mind if its "better" due to X reason.

[gentle urchin]

Same

LevelBP is cursed 😄

[crisp vault]

love hate here haha

[obtuse herald]

It's more a me thing probably

[crisp vault]

ah okay

[gentle urchin]

Most of its usecases feels as dirty as "getallactorsofclass"

"Lets just grab an actor ref here, and hardcode some stuff to it"

[crisp vault]

so in the end, i guess it depends then on use case

[obtuse herald]

But you can't reference it, it's limit to the level, I tend to forget it's existence

And I like modularity

[crisp vault]

basically, all needed is try to replicate things around the world, weather is nature, and thus not controlled or altered by humans (directly), so a player cant change anyting, he spawns into the world and the world affects him, not he affects himself according to the world. Like.. "hey look im on moon, ah true i need to hold my breath cause there supposed to be no air" <-- i want to avoid this xD

im trying "ah damn i cant breathe, the planet doesnt have any atmosphere", how does he know? environment "told" him

[crisp vault]

I cant reference to level bp like "get" its stored variable reference?

[gentle urchin]

WeatherSystem would in my world be its own actor

[crisp vault]

Yeah now it makes more sense..

[gentle urchin]

LevelBP might spawn it due to level specific parameters for it,

[crisp vault]

Then Level bp is in most cases empty, ive seen it empty too mostly

[gentle urchin]

Yeah i'd prob let GM or smth spawn it really

Or pre placed in the level, but then there's less control over it

[crisp vault]

makes sense, sort of like "generate and calc stuff in the existing world"

[gentle urchin]

over when it initializes compared to other classes ..

Exactly

"Oh , this is some icy world with winter storm, lets tune this to the max!"

[crisp vault]

yup, still follows the rule, something "creates" it, it makes still sense, level bp could be "nature" in this case instead.

nice nice, thanks! good thinking

[gentle urchin]

who creates it is less important as long as you have control over when it must be created and initialized (hopefully before player can see it winding up etc)

[crisp vault]

yeah thats exactly what a loading screen is for if it takes longer than a flash i guess

[obtuse herald]

Exactly

Level BP is untouchable by anything and can only send

[tawdry surge]

But it does receive event dispatchers. In reality it's not a "bad" thing to use, it just has specific use cases

[gentle urchin]

It does serve a purpose yes

Its not inherently bad

Its just heavily abused in those uses i do see

[odd ember]

not strictly true, it really depends on whether it's a system or level unique. if it's thematic to the level that there is a weather event and you want that to display on the hud, that's definitely level BP territory

if you have that for multiple levels however

it's better to have it systemic

[odd ember]

I usually see the opposite: that people try to do unique level events as systemic

[gentle urchin]

Tbf the only references i do have are those coming from tutorials, which is in a league of its own when it comes to quality and consistency

[obtuse herald]

that sounds like me lol

[odd ember]

fair enough, I don't watch tutorials but I can imagine them being quite underwhelming in terms of architecture

[gentle urchin]

Oh they never disappoint ^

[obtuse herald]

true

[gentle urchin]

Then again my architecture is pretty far from perfect aswell 😂

[odd ember]

as long as you can stave off tech debt for some time I'm sure you'll survive

[gentle urchin]

Im used to finding fixes even in horrible setups so Most likely it'll work out in the end

Not sure what you mean by tech dept ?

Is that some common term for painting one self in a corner by bad architecture?

Ah. I try to avoid it to the degree possible. I feel like im bending over backwards to avoid future problems, but not sure yet as very few of my systems end up being developed far enough for that to become a thing

Perhaps this time... ill see if i managed ok

[obtuse herald]

ok, quick explanation for 'tech dept' please?

is it the need of rewriting bad code?

[gentle urchin]

https://en.m.wikipedia.org/wiki/Technical_debt

Quick narrow solutions increasing cost of rewrites down the road

[obtuse herald]

Ah yeah I see

I tend to over-modularize my systems

[rapid bronze]

i created a collision preset. this preset problem is can push by other characters in map. but default presets Do not have this problem

[odd ember]

yeah I was gonna link this

which really springs from the fact that software development (and by extension game development) is wicked problem solving: https://en.wikipedia.org/wiki/Wicked_problem

[ruby cliff]

Hi guys, question about a character BP... I know how to set a morph target on BeginPlay, but what if I'd like to have it applied just in the viewport, so without any play or simulate event? Possible?

[odd ember]

Construction script

[gentle urchin]

or editor event

[ruby cliff]

Thanks. Construction script doesn't have a set morph targe node however?

[odd ember]

then editor events are your best bet

[ruby cliff]

Ok, thanks I'll google about it, I never used them

[gentle urchin]

they come up in the instance details panel like this

custom event -> details panel -> mark as "Call in Editor"

they cant have inputs

so the "inputs" must be instance editable variables

[ruby cliff]

Thanks a lot @gentle urchin , appreciated.

[versed sun]

I have a scene with many torches. I want to change the brightness during gameplay. I adjust the Intensity and Attenuation Radius but my FPS is dropping bad.
Is there a better way ?
https://www.screencast.com/t/YThtHg65wwx

Is there a way to 'Mask' off the Directional Light/Skylight?

[odd ember]

what do you mean "mask"?

[versed sun]

to have areas of the map that the Directional Light/Skylight don't effect

right now they are 100% off

but if i turn them on a little bit , then i can see the center area

[odd ember]

not that I know of. sounds like stuff you'd want to handle at a renderer level

[faint pasture]

Show how you're adding force

[obtuse herald]

https://docs.unrealengine.com/4.27/en-US/BuildingWorlds/LightingAndShadows/LightFunctions/
you mean that?

[ruby cliff]

I have set it but probably something it's missing, as it doesn't trigger the morph in the viewport. If I use a Toggle Visibility node it does work though... odd that can't set the morph target, maybe isn't supposed to?

[silent pilot]

I'm trying to spawn a big block of instances of cubes (32*32*16) but it crashes when I click run :(

The code is very basic, just a for loop in a for loop in a for loop, each for loop for each dimension

And "add instance" at the end

But I end up with this:

Idk if PC specs matter but they should not since I have a decent computer

GTX 1050 (with 2 GB of VRAM), i5 7500 or sth close, 20 GB of RAM

But most importantly I use (Arch) Linux btw

[obtuse herald]

pc speed doesn't matter in this case

[silent pilot]

invert number sign

[fiery glen]

it just makes the int negative

[versed sun]

ok

[obtuse herald]

bp has a default max iteration of 1 000 000

[faint pasture]

He should only be doing 16k

I thought iteration max default was 10k tho

[obtuse herald]

yeah, if the loop is set up correctly

[silent pilot]

The current code crashes tho

With what I showed you guys

32*32*4 lol

[faint pasture]

Remove your math shenanigans and confirm that a loop that phat can run

[obtuse herald]

try adding a variable that increases inside your deepest loop, and print it everytime afterwards

[lucid ingot]

Index is only set to Y axis?

[fiery glen]

max loop iteration is 1000000 for me by default

it's possible multiple nodes increase that count faster?

no clue

[silent pilot]

not sure I understood XD what do you mean by that 🤨?

[faint pasture]

IDK if it would but your non-pure minus node might be messing with your index

[lucid ingot]

and then sets to Z

[faint pasture]

Remove the non-pure minus and run it

[obtuse herald]

oh yeah

[silent pilot]

alright

[obtuse herald]

• takes a ref

[faint pasture]

you might be modifying the index in place lmao

[obtuse herald]

don't do that

[fiery glen]

it's flipping it each time

[silent pilot]

I can't print it... Because my code won't even run lol

[obtuse herald]

should print nonetheless

[faint pasture]

Even if that's what he's after he's not gonna get it with what he has

[obtuse herald]

until it breaks

[silent pilot]

it surprisingly works without the - sign

[faint pasture]

Not surprising.

[silent pilot]

• takes a ref lol

[obtuse herald]

just don't modify the index variable itself (aka don't connect it with a diamond shape)

[silent pilot]

yeah ik

thx for the help

[faint pasture]

If your math has an execution pin you're prolly fucking up unless you mean to

[silent pilot]

My math has an execution pin? What do you mean?

[obtuse herald]

that is an excecutin pin

short exec

[versed sun]

I don't know if this helps, but there is a handy 2d Grid Macro build in

[obtuse herald]

what

[versed sun]

and you can just run that Z times

[obtuse herald]

is it build in?

[silent pilot]

Ooh I see what you mean

[versed sun]

i said the same thing when someone showed it to me

[obtuse herald]

https://tenor.com/view/sad-cry-crying-tears-broken-gif-15062040

I always did my own math to achive this

so much time

wasted

[versed sun]

At least you understand how to do it manualy

[silent pilot]

This is right, right?

I now have a loop of 64*64*64, but it crashes because "infinite loop"

64*64*10 works tho

[versed sun]

are you clearing instances before you start your loop ?

[silent pilot]

No, but why would I do it? It's the only time I add instances

Is like "in case"?

[versed sun]

you may be stacking them on each other

[silent pilot]

My computer can do it 🦾

I believe in it

Nah for real that makes sense lol

[obtuse herald]

or you increase max iteration and hope for the best

I recommend lorash's advise

[silent pilot]

Maximum loop iteration is at 1000000

1 000 000

I'm only at the quarter

It should be fine shouldn't it? but whatever, Ill split work

Also, last question, is it possible to have a instanced blueprint instead of a mesh?

[faint pasture]

You're getting into C++ territory IMO. This is not sustainable in BP

What's your frame time when you hit that loop?

[obtuse herald]

yeah cpp has a lot faster iteration time

[silent pilot]

I thought BP was just CPP but graphical :(

[silent pilot]

You mean once all the stuff is generated, or as it's generating?

[gentle urchin]

Just use a forloopwait

Crises averted forever

[faint pasture]

It sorta is but also like 100x slower and limited. I love BP and would never use anything else if it not for the limitations.

[faint pasture]

As it's generating

[silent pilot]

UE4 version of Cpp is so weird so I thought using BP directly would make more sense, but now you guys are telling me it's slower :(

[gentle urchin]

It is quite a bit slower

[faint pasture]

It's always been slower. Use BP if it works for your use case, but I'm smelling this as not working. What are you trying to do, gameplay wise?

[gentle urchin]

Proc gen a level ? First guess

[silent pilot]

Recreate Minecraft, kind of

[gentle urchin]

Go cpp straight away^

[faint pasture]

Start with breaking the work up over ticks. That's what Minecraft does

[slow pewter]

Mhh got again in Trouble i have, 3 Widgets as Child in an Widget, why on debugger its always duplicates, like i called it "0""1""2". and i get it doubled -> https://puu.sh/IJLc5/ae6711c353.png

[silent pilot]

I feel like it would be easier to use Blueprint first, because Cpp objects are just a code representation of what Blueprint graphically represents. And it's easier to learn with graphics representation

[thin panther]

But what you want to do is more suited to native code

[silent pilot]

Yeah ik

But it's not a real project

It's just to learn

Ill redo it in Cpp after I have made sure I understood everything

I'm a diehard Cpp fan so dw I'll do it 🙏

[gentle urchin]

I can get behind this. Forge ahead !

[tawdry surge]

I mean 100x slower is an exaggeration. But loops are particularly not good in BP

[gentle urchin]

In my case i got 8x the speed 🤷‍♂️

1 to 1 bp to cpp

So if you've made it work ok in bp you can be sure to reap some rewards moving to cpp 😄

I've only done proc gen in bp myself

Could go relatively big maps before loop iteration went to slow

[thin panther]

Is it advisable to use the thing that converts blueprimts to native code before packaging

[gentle urchin]

Even then, chopping it across a few frames avoided the 10 sec freeze

[gentle urchin]

Not really, nativization is gone in ue5 atleast. Works pretty unreliable after what ive heard

[thin panther]

Ah, okey doke

[sharp rapids]

only if working with cpp was faster on my machine 😦

takes around 10 minutes to compile everytime I make a small change

[gentle urchin]

Compiling wrong? 😂

Takes 15 sec on mine

[sharp rapids]

i don't know. I 'Rebuild the project' in VS

OR use the 'Compile' button in the editor

both are really long

[silent pilot]

I know I was just doing tests

Yeah

[gentle urchin]

'Rebuild' rebuilds all of it, while 'build' just builds the files affected by the change(s)

[slow pewter]

How i edit Items in Array?, i was trying to Insert, but thats not like Editing, thats like Adding everytime..

[versed sun]

you might be looking for this

it edits an existing element or adds a new one

[slow pewter]

But is this not like Creating always an Array Element?

Like i try to Add Dynamically Indexes on Changes,

like on Text Change, Add it on that Index ->

[versed sun]

only is Size to Fit is checked AND you dont already have that index

[slow pewter]

Yeah that works Flawlessy, got bad Experience with it, but thats what i want!, Thanks Bro 😄

[zealous meteor]

Hi

How do I disable and enable a component in an actor through blueprint?

I want to make a cube appear and dissappear

[cold cobalt]

So for some reason, even while setting air control to 1 I cannot maneuver my character at all when falling... Any thoughts as to what I can check?

[vital aspen]

for some strange reason, that I don't know. sometimes I just can't get a widget to close. I'm opening and closing my inventory widget from the player controller,

I have watched about 3 videos and still have the same issue. anyone have any idea what I'm doing wrong.

[gentle urchin]

Instead of relying on your custom bool

You can check if the widget is in viewport

Also you dont have to create a new widget each time , but thats just a detail i suppose

[vital aspen]

well it looks like the UIInventory wasn't getting set, So I added this to the construct in the Hud.

this is what I changed.

how ever it still doesn't close the widget. I can open it, I just can't close it.

[gentle urchin]

Input mode ui only

I think thats your culprit

[vital aspen]

Let me try game and ui.

bingo. Thank you, That worked.

[lime yoke]

Is it possible to call a Super in blue prints from a parent class? Let me show you a simple example.
Expected result: "Hello World!"
Actual result: "World!"

[wet grotto]

Hello everyone, I am creating an endless runner game and I have infinity tiles which spawn when it is collide with the box. When I set the for loop to 2 it creates 2 tiles in front of the character however in time its became massive amount of tiles and I am looking a way to tell the engine the max amount of the tiles.

[blissful grail]

Right click the event and there is an option to call super

[vivid hatch]

Kinda new to blueprints, but are you trying to get randomness for the tiles? I would see the events to achieve this

[lime yoke]

I read that on internet but I can't find that option.

[vivid hatch]

Hi
How would I get a child camera to follow the parent but add extra values to the position on runtime?

[lime yoke]

I tried that but I thought it wasn't the correct option.

Where should I connect this?

[untold dust]

Hello everyone, newbie question here : In my PlayerController there is a Componement, I would like to have access to a variable that belongs to the PC from the AC, it's there a way or I need to cast it.

[blissful grail]

At the start of the event, as the first node it plugs into

[lime yoke]

It runs backwards, though.

It prints "World Hello" instead of "Hello World".

[thin panther]

Have you tried reversing the nodes then

Put world fiest then call parent?

[lime yoke]

It sounds kind of counter intuitive.

It kinda works I guess?

[thin panther]

It is but code takes time to execute l, its likely gonna be quicker to print the string than it is to call the parent

[lime yoke]

That is my main concern. I would like it to be synchronous, call parent event and just after it finishes, call the child event.

I think I've got an idea, though...

[gentle urchin]

Go for it !

Just make the function in the parent

Call it at the end of on landed

Override it in the child

[surreal coyote]

So how do you use a while loop without getting the infinite-loop error?

Isn't it the point of a while loop to be "infinite"?

I come from Javascript but I doubt it's different in c++

Why can't this just run until I set Can Enter to false?

[gentle urchin]

It does

[obtuse herald]

It runs the while loop in one frame

[surreal coyote]

Or do I have to set it to false inside the loop at some point?

[gentle urchin]

But you must do it within reasonable time

Exactly

[surreal coyote]

So I can't wait for another event to set it to false

[obtuse herald]

if you don't set 'can enter' to false in the same frame, it throws you out

[lime yoke]

I thought the same and it works! Thank you!

[obtuse herald]

not like that

[gentle urchin]

No, cuz its blocking

It blocks anything else in the game thread from being processed

[obtuse herald]

you can however create your own while loop and add a delay after every loop

[surreal coyote]

Then I can't really do this with a while loop

Just want a text to rotate with the controller camera

[gentle urchin]

Yes you can

But not ... in a while like that

You could say the preconditio for the while loop is a rotation comparator

[surreal coyote]

Tick then?

[gentle urchin]

If rotation != desired rotation

But

It doesnt make sense to have such a thing in a while loop

Tick is reasonable for this, yes

[surreal coyote]

Aren't too many functions on tick tanking performance at some point?

[gentle urchin]

Yupp

Everything comes with a cost

[surreal coyote]

Why is there no option with texts to just do this

[gentle urchin]

It would be done on tick..

You can add a rotation component to it

As the partial root of the text component

They tick in c++ so less costly

[obtuse herald]

you could also create a timer

but usally rendering or physics stuff are one of the only things you actually put on tick

[gentle urchin]

^ some of the good usecases for tick*

[surreal coyote]

That's what I've done so far

And engine sound

[runic plinth]

on this tick topic i was having a question. Should I use tick if I want to track what's the closest actor based on player distance?

Because to find the closest actor I'm using "get all actors of class" and for each loop, and running a loop on tick is costly.

[earnest ridge]

How often do you need to check the closest actor? Almost constantly?

[odd ember]

yeah that's really inefficient. I'd avoid ever using get all actors of class

[runic plinth]

all the time, kinda proximity based project. Press key to find closest actor thing

oh i could use this "press key thing" to fire the event

[odd ember]

if you have to press a key, then you don't need any logic before that keypress

[tawdry surge]

It's fine if you do it once to get the list, save it to a variable and then just loop through the locations

[earnest ridge]

This was the reason why I was asking that 😄

[gentle urchin]

Also using a collision volume for this probably makes more sense

Registering objects that come within a given radius

[runic plinth]

Then I would need to filter what that volume collides with

[odd ember]

correct

[gentle urchin]

Either you do it initially by the channel so only objects you're interested in reacts to it ,

Or you do it on overlap and check if they have a given property that you desire

Like Tag

[runic plinth]

Besides the Tick there, how does it look? (made it compact for the print)

[odd ember]

messy

[runic plinth]

messy cause i had to pack the nodes for the print 😅

[odd ember]

there is nothing inherently wrong with the code shown, but it seems to cover a lot of cases on tick rather than looking into how those cases should actually be registered

[runic plinth]

The idea is to replace the Tick with the player input event to fire the closest actor reroll, this would be more efficient correct?

[odd ember]

it would but you're not solving the problem, only moving it

realistically it's fine but you can mash that key and you'd still have issues with framerate drops

[runic plinth]

indeed, thank you for the input will think of a way to put a cooldown or prevent the over triggering.

[odd ember]

that's still a bandaid on a broken leg

[gentle urchin]

Getting rid of the GetAllActorsOfClass would be my first mission

[silent berry]

that part is easy

[odd ember]

you should create an architecture to support this instead of looking at quick hacks to fix them

[silent berry]

like CE said, it's still a problem and adding a cooldown is basically just sweeping all the dirt under a rug

all it takes is that rug to get moved and the dirt goes everywhere again

[obtuse herald]

GetAllActorsOfClass isn't that bad performance wise btw

[odd ember]

it's not just that it's bad for performance (and it is, if you look at the actual cpp code), it's also that it is a terrible shortcut that instill bad habits

[silent berry]

It's not THAT bad but it could be much better

[runic plinth]

Sadly don't have that know-how to build that architecture. The player input is basically an aid to find actors on a maze. In the maze the more you use this the closer the bad guy gets to you. So I was assuming this would disincentivize player to abuse, on top of this indeed I need some sort of resource to manage the potential abuse. Any references I should look up to build this architecture?

[gentle urchin]

Yet almost any setup beats it in performance :p

[odd ember]

well you were given suggestions for it

registering actors on collision is a better way already

[runic plinth]

Also, I'm using this GetAllActorsOfClass because I need to reference actors that are streamed from other levels (maps) and didn't manage to find a way to reference these actors from other levels. So the idea was to target them after the level stream. Could you suggest any links or advice to target actors on other levels?

[dark crow]

There's GetActorOfClass if you just wanna access the first one too

Less messy visually

[odd ember]

the collision approach solves this issue

[obtuse herald]

GetAllActorsOfClass utilizes hash maps which at best case is O(1) and at worst case is O(n), however I totally agree with your second statement

[odd ember]

it doesn't

look at the code

it iterates through a TArray of actors

[silent berry]

I've seen way too many youtube tutorials that push using GetAllActorsOfClass

[runic plinth]

Re-reading this tip, I would need to set a pre-determined distance or size of this volume, what if the actors are outside of the collision radius of the volume?

[obtuse herald]

I'll check again

[odd ember]

also UE doesn't use hashmaps, it uses TMaps, which function just like maps in BP and require a key,value pairing. it would make no sense to get actors from that because you'd still have to get an array of keys

that's fair

I don't know the implementation of TMap

I know TArray is a heap

is it?

[gentle urchin]

Yeah it would be a predetermined size. Sorta depends on your scenario. Is it a problem not finding any object if none is within the given range?

[odd ember]

I thought they had a heap implementation on the backend for faster use

oh well

[runic plinth]

Should I PM you to briefly talk about it?

[odd ember]

I was under the impression they came pre heaped

wouldn't you just go left to right in the heap for indices?

[zealous moth]

kill me... what is inconsistent dll linkage

and i'm in the wrong place

ty

[odd ember]

it only tells you of inconsistent dll linkage, not of consistent dll linkage 😔

[gentle urchin]

I ended up with two TMaps for semi-predictable iteration, and for speed above TArray

[silent pilot]

I think I've already asked this but can I have an instanced mesh that is a whole class I created, like a BP?

I have my chunk, my chunk is made of blocks, I'd like to have a ISM that stacks those blocks

[odd ember]

it is possible yes

it's a pain in the ass to work with but it is possible

[silent pilot]

How should I do it then?

[near wolf]

Hello, how can I trigget 2 events at beginplay? This is not working, im trying to play video and audio at the same time

[odd ember]

that's up to you?

[silent pilot]

Well I don't know how to do this

No clue comes to my mind

[odd ember]

you don't know what?

[silent pilot]

I have a block

I want a chunk that stacks a lof of blocks

But I don't know how to do it

[odd ember]

ISMs are available as component inside actors if that's what you're asking

[obtuse herald]

I don't have the full source installed and going through it via github is rather hard, does that count aswell? https://www.casualdistractiongames.com/post/2016/09/15/Inside-UE-Source-FUObjectHashTables-the-magic-behind-GetAllActorsWith

[silent pilot]

No I know how to use ISMs

[thin panther]

If you wanna make minecraft you shouldnt be stacking cubes

[silent pilot]

It's just that they only allow a Mesh

Not an object

[odd ember]

yeah there's no such thing as an instanced actor in that capacity

[silent pilot]

Alright

[odd ember]

you can have a manager actor that spawns bricks as you want them

or you can use the bricks as meshes

[odd ember]

void UGameplayStatics::GetAllActorsOfClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, TArray<AActor*>& OutActors)
{
    QUICK_SCOPE_CYCLE_COUNTER(UGameplayStatics_GetAllActorsOfClass);
    OutActors.Reset();

    // We do nothing if no is class provided, rather than giving ALL actors!
    if (ActorClass)
    {
        if (UWorld* World = GEngine->GetWorldFromContextObject(WorldContextObject, EGetWorldErrorMode::LogAndReturnNull))
    {
        for(TActorIterator<AActor> It(World, ActorClass); It; ++It)
        {
            AActor* Actor = *It;
                OutActors.Add(Actor);
            }
        }
    }
}```

[obtuse herald]

yepp, that fits with the article I send pretty well

[odd ember]

you do see that it is going through a loop that the article conveniently leaves out?

[obtuse herald]

it loops over every actor of the class and just adds them to the out array

I never said if you want the best performance for you game use GetAllActorsOfClass

I just said it's not that bad as it often gets called out

[odd ember]

void operator++()
    {
        // Use local version to avoid LHSs as compiler is not required to write out member variables to memory.
        AActor*           LocalCurrentActor      = nullptr;
        int32             LocalIndex             = State->Index;
        TArray<UObject*>& LocalObjectArray       = State->ObjectArray;
        TArray<AActor*>&  LocalSpawnedActorArray = State->SpawnedActorArray;
        UWorld*           LocalCurrentWorld      = State->CurrentWorld;
        while(++LocalIndex < (LocalObjectArray.Num() + LocalSpawnedActorArray.Num()))
        {
            if (LocalIndex < LocalObjectArray.Num())
            {
                LocalCurrentActor = static_cast<AActor*>(LocalObjectArray[LocalIndex]);
            }
            else
            {
                LocalCurrentActor = LocalSpawnedActorArray[LocalIndex - LocalObjectArray.Num()];
            }
            State->ConsideredCount++;
            
            ULevel* ActorLevel = LocalCurrentActor ? LocalCurrentActor->GetLevel() : nullptr;
            if ( ActorLevel
                && static_cast<const Derived*>(this)->IsActorSuitable(LocalCurrentActor)
                && static_cast<const Derived*>(this)->CanIterateLevel(ActorLevel)
                && ActorLevel->GetWorld() == LocalCurrentWorld)
            {
                // ignore non-persistent world settings
                if (ActorLevel == LocalCurrentWorld->PersistentLevel || !LocalCurrentActor->IsA(AWorldSettings::StaticClass()))
                {
                    State->CurrentActor = LocalCurrentActor;
                    State->Index = LocalIndex;
                    return;
                }
            }```
second loop inside the `++` operator of the iterator

[odd ember]

as you can see above it is absolutely not worth considering in terms of pure performance. yes you can get away with using it because of today's hardware, but if you're doing anything beyond the simplest prototyping, it is not worth it

[gentle urchin]

Just to be clear, i didnt mean anything along the lines of horrible 😅 just not good , and often leads to tech debt as we talked about earlier today :p

Relying on such a function, that is

[odd ember]

I'm still trying to see where GetObjectsOfClass is being called

because we're not even at the end of the rabbit hole here

and we're already at O(n^2)

[obtuse herald]

Well lets end that here (kinda out of scope for #blueprint ), I stand corrected (or not I'm still not 100% sure :p). In the end using GetAllActorsOfClass is (in most cases) bad practice anyways and should not be used beyond prototyping.

[odd ember]

it's worth mentioning that using it in editor is even more expensive, as it adds an additional 2n from what I can see. though I suspect even with any hashmap functionality you'd still have an additional n somewhere

[indigo bough]

Hey folks, any idea why I'm getting these gaps between my spline meshes?

[odd ember]

does your mesh have enough vertices to support the movement?

[gentle urchin]

Spline meshes are also stupidly expensive :(

[surreal coyote]

Smoother way to teleport to interiors? Don't think so.

[gentle urchin]

Why split the pins? 😄

[surreal coyote]

Oh I played around with the Z value before

[odd ember]

that double comparison is unnecessary

[indigo bough]

Yeah, plenty of verts, but to be honest I would still expect them to be butting up to each other, even if it was just a 4 vert plane

[odd ember]

they wouldn't if the path isn't straight

apart from that, I'd say it's the spacing given per spline mesh component

[indigo bough]

Hmm, I'm not aware of a spacing parameter (at least, my searching found nothing). What do you mean by this?

[gentle urchin]

Also

[odd ember]

your MeshLength parameter is your spacing

[gentle urchin]

Using mesh length?

[tiny prairie]

still working on my fortnite building stuff this is some code i have right now for when something destroys gets really laggy when i connect alot of buildings to eachother https://www.youtube.com/watch?v=z9F7UVloESw&ab_channel=WALLZ "Death" plays when i shoot something https://blueprintue.com/blueprint/f6qyleq5/ , https://blueprintue.com/blueprint/tndzuvq6/ any idea on how i should improve / remake this EDIT: "Checked in", "Checked out" And "Checked" are arrays

[surreal coyote]

It works so well

[indigo bough]

MeshLength just changes how long the mesh should cover along the spline, not the spacing between it.

[odd ember]

yes but integrally in your your spline loop it handles the same. it determines the space from mesh pivot to the next mesh pivot

whether a mesh actually fills that space

[odd ember]

@surreal coyote

[indigo bough]

Right, I see. Seems counterintuitive, but I'll try with that. Thanks

[surreal coyote]

Yeah I suppose you're right but it doesn't hurt

In coding you always have to expect everything. Even players getting cars in interiors

[odd ember]

how is it counter intuitive? you take your spline length, divide it by your spacing and have how long each segment is. each segment then gets its own spline mesh component

seems like correct logic to me

[gentle urchin]

So why is it spaced

[odd ember]

that wouldn't make a difference. you're already doing the cast

[odd ember]

are you asking me?

[gentle urchin]

Actually i think i realized it

Is the spline only like 4-5 segments?

Doing the division you're missing out on the fractional part

[indigo bough]

Ahh, yeah that'll do it

[gentle urchin]

But then... it would only be on the end of it ... hmm

Thats not it then

[crimson hornet]

Hello I got an problem. My NavLinkProxy is not working. I assigned my NavLinkProxy to an BP, but when the AI follows me it wont go through.

[indigo bough]

I appreciate you thinking through this as well, honestly it doesn't make any sense why it's spacing.

I even checked the mesh pivot, and it's perfect

I've done these splines so many times before, no idea why now it's a problem

[pulsar path]

hi i started making a town down game yesterday, but im running into a weird issue where if my editor perspective isnt top down (ie: is in perspective) then the player starts in a weird location with the camera permanently rotated and i cant seem to find whats going on. anyone have any idea?

[odd ember]

have you tried playing around with the mesh length and seeing how that affects the spline in question?

because there's your answer

[gentle urchin]

Length / meshlength = #meshes.
Mesh index * meshlength = DistanceOnSpline

Math checks out in my head

But there is some initial offset

To only one of them

Which breaks the math

[odd ember]

I think you need 1/scale somewhere in there if I remember correclty

[gentle urchin]

Start of the mesh has an offset, end of it does not,

[odd ember]

sorry, scale being 1/meshlength fraction

[gentle urchin]

In the right direction that would give spacing

[odd ember]

for the last one

[gentle urchin]

Try without the offset? Null it temporarily

[indigo bough]

Sorry, do you mean "HeightOffset"?

[gentle urchin]

Yes

That, or apply it to both start and end...

[indigo bough]

Same result unfortunately, all that's doing is shifting the points up in world space

[gentle urchin]

Ah i misread(phone)

2 sec, booting project

[indigo bough]

I've somehow seriously broken this and I'm not even sure how 😄

Looks like the tangents are now broken too

[gentle urchin]

worked like a charm

[surreal coyote]

How would you do a quick screen fade to black?

Is there a function?

[gentle urchin]

this was surprisingly smooth

[obtuse herald]

GetPlayerCameraManager->Fade

something along does lines

[surreal coyote]

Ty

[gentle urchin]

code i used, for reference

not sure what has happened really

[indigo bough]

Thanks! I'll try the flooring instead of Whole and Remainder perhaps

[gentle urchin]

last time i used it it tanked my draw time at even small amounts

[indigo bough]

Yeah nope 😄

I tried using the start/end at each point instead, but it's not as good a method because you get massive UV stretching depending on the distances between points

[gentle urchin]

ouf

looks pretty bad

i can force oddities at specific points,

but nothing weird beyond that

[gentle urchin]

spline settings?

and spline mesh settings

[latent basin]

hey guys, is there a way to make a realistic mirror in ue4? i need it to be realistic no matter the cost in performance. Ive tried a second camera but ran into many problems, and using materials and planar reflections isnt looking too good :(, is there another way or am I missing something?

[odd ember]

no array settings?

[gentle urchin]

ue5...

[indigo bough]

I mean it's possible it's broken in UE5... But I'm pretty sure I had one working a few weeks back

[obtuse herald]

Scene capture components

[near wolf]

Why I have so many missing nodes, what the hell. I look for something and it's not there

[odd ember]

turn context sensitive off?

[obtuse herald]

are you in an UObject?

[gentle urchin]

try with a different mesh

try the basic cube

[near wolf]

nah

[near wolf]

I did that too

[odd ember]

that's all I got

[obtuse herald]

same

[maiden wadi]

What is the parent class that your blueprint inherits from?

[obtuse herald]

functions don't support latent stuff like delay if you're searching for that

[odd ember]

they would still show up I'm pretty sure. when placing them you'd get warned iirc

(the node wouldn't spawn)

just like spawn actor in construction script

[indigo bough]

I think that answers the question, thank you!

Why my particular mesh won't work is beyond me, but I'll investigate

[gentle urchin]

Somehow its not the size it think it is?

[obtuse herald]

they don't, the warning occurs if you paste them in

[odd ember]

ah yeah

maybe that's it

[maiden wadi]

The world may never know.

[indigo bough]

I do have the 'bounds' increased (to avoid popping out when using worldpositionoffset i the material) but I doubt that'd be messing with it. I'll try

Ahh hahaah

Yeah, it was the bounds

Well, now I feel stupid, but at least I know that's causing it.

Thanks for the assistance folks

[gentle urchin]

Tehe no problem !

If this is a road perhaps virtual texturing could be an idea

[near wolf]

so im trying to play both video and audio on button press. But only 1 of them works. Can someone help?

[odd ember]

I'm guessing the media player can only play one media at a time

[near wolf]

even if I have 2 media players it still doesn't work

[odd ember]

how did you setup 2 media players?

[near wolf]

not sure if this is the right way

[maiden wadi]

That's not two different media players...

[odd ember]

I kind of suspected that was the case 😁

[maiden wadi]

That is two different nodes, using the same pointer that points to the same media player.

Also

Why is the audio not encoded into the video?

[odd ember]

because that would be too easy

[near wolf]

because they are not from the same place

[maiden wadi]

Why not use an audio component for the audio instead of the media player?

[near wolf]

I tried that too

but maybe I don't do it correctly

[odd ember]

is the audio in a separate video file?

[maiden wadi]

That isn't an audio component.

Also. To do this, you probably need two different Media Players in your content browser. And even then I'm not actually sure if that'll work.

[near wolf]

I have 2 different media players

and both of them have the audio and the video

[odd ember]

best thing would be to merge the audio and video channels before importing the video

[odd ember]

well going by your previous example, you don't.

[near wolf]

im not sure what im doing wrong

[odd ember]

that's, again, not two different media players. that's just two pieces of media

[maiden wadi]

I dunno. I've never tried playing sound through Media player unless it was encoded in a video file. Even then I use the MoviePlayer in C++ instead of the content browser MediaPlayer. Sounds are much easier handled as basic sound files through an audio component.

[odd ember]

https://docs.unrealengine.com/4.27/en-US/WorkingWithMedia/IntegratingMedia/MediaFramework/HowTo/FileMediaSource/

[mild tangle]

how would i get the timeline to stop part of the way from a to b

i tried to mess with the values of the timeline

but it didnt really change anythiong just the speed of movment

[near wolf]

I did exactly this and It's not working

[obtuse herald]

if you want to pause the time line and resume it later use the stop pin

else just adjust your float curve

remember that alpha is a value between 0.0 an 1.0 corresponding to 0% to 100%

[stable smelt]

Hi, does someone knows of a good way to find which character skeletal mesh is being used in the player blueprint? other than checking the name of the mesh? (I feel like that is something I shouldn't be doing, even though it only does it once at the start).

-I suppose that changing manually a public variable in each instance should do the trick, but I want to know if there's something that can automatically do that.

PD: I tried checking the distance between sockets and from the head socket to the floor. But my characters share skeleton, and that seems to make all values the same, even though all my characters are different height.

[odd ember]

the only thing other than the name you could check is the asset being used

[stable smelt]

Hmm, btw is a bad practice to use the name? I'm no programmer, I'm just messing around. But I feel like that's like a "hack" way of doing stuff xD

[odd ember]

usually you'd use GUIDs to distinguish assets in use, but unreal generally uses FNames for this

[dawn gazelle]

Timelines can have function tracks. On that function track you can make it pop out an event at a certain point in the timeline and that event can then stop your timeline.

[stable smelt]

Thanks.

[mild tangle]

Thank you, this seems to be the solution to my issue

[mild tangle]

Thank you for the help as well

[steady night]

hey guys, what is the best way to add my stats onto my charachter, i mean i got variables "strength,endurance" and each of them gives 5+ health how would i best make it interact with the value, instead of when increassing and decreassing str,end value to update should i use event tick to always set the max health value ?

[gentle urchin]

When a stat changes -> recalculate stats

Either all or affected. Id just do all, duck it :)

[steady night]

yeah

[gentle urchin]

Only on change

[steady night]

hm and i would do that inside my charachter Bp with all the variables i suppose ?

[gentle urchin]

Not on tick

Yep

[steady night]

oh ok,

how would i check if value change ?

[spark steppe]

use a setter method, e.g.: create a function setStrength()

[gentle urchin]

So when player levels up -> stats change -> recalc

When player equips/unequips -> stat change -> recalc

[steady night]

aye so i should do a function that recalcs ? and call it when i need it ?

[maiden wadi]

Would recommend doing this inside of an actor component or something. Makes it reusable for other stats elsewhere on other things.

[spark steppe]

and the setter can call something like updateHealth()

[gentle urchin]

Strengts affection on other stats would be hard to isolate in a singular comp tho?

It would be an entire stat comp

[spark steppe]

i wouldn't make a component for that

[gentle urchin]

With its complex interaction inside

[spark steppe]

maybe rather an UObject

[gentle urchin]

Why uobject over component? Modular piece of code may aswell reside inside a simple component?

[spark steppe]

component adds more overhead

and if you add one for each value you may get a clusterf*** of components in your actor BP

[steady night]

https://gyazo.com/e51e8b896b35289cace88262d6df30a8

so like this ?

[gentle urchin]

Nah, one for the entire stat system really , not one per stat

[prisma snow]

is there any way to create and publish game for IOS with windows PC?

[gentle urchin]

Since they have some 'complex' effect on each other

[gentle urchin]

That'd be a start yes

[random plaza]

is using for each loop on tick a bad idea?

[spark steppe]

depends on what it does

[random plaza]

it casts to the player, gets the current quest array, compares each item in the array with the quest object's variables then if it matches up sets the visibility of it's screenspace widget

it's a quest marker

[spark steppe]

yea that sounds like a bad idea

[gentle urchin]

And it needs to check this every single frame?

Sounds pretty bad indeed

[spark steppe]

that sounds like something that can be event driven without any problem at all

[random plaza]

i could have a event that fires when a variable changes in the quest struct

[spark steppe]

now guess what is more efficient, checking ~60 times per second or firing event every few minutes 😛

[dark crow]

Using a timer that calls a timer that calls another timer that casts to all classes with a for each loop in 10 sequences and evaluates if the data is the same before infinitely adding it all to an array 👍

[gentle urchin]

Nested timers decreases cpu cycle time, i've been told. Speed increases by power of timers

[dark crow]

Pure mathematics

[gentle urchin]

At some point i need to deal with the memory issue im facing ...

started coming after i played around with virtual texturing

[steady night]

https://gyazo.com/2cf28e6645c6c332b23b8bc7d401a0b4

[gentle urchin]

which i have removed yet it haunts me

[steady night]

yay got it to work 🙂

[high yew]

how do I make it so that my static mesh rotates toward its velocity?

[silent pilot]

So, what's the best way to remake Minecraft with Blueprint/Cpp?

[gentle urchin]

pretty broad question

[obtuse current]

Anyone know why Making an Enum via a Byte is incorrect? In this example, just to test that something was wrong with bytes, I convert an enum to byte, to int, back to byte, back into the enum. I'd expect these enums to be identical, but they get different results (byte is always returning enum index 0)

[gentle urchin]

tried going via literal byte?

[odd ember]

you're truncating to int when you convert to int

[gentle urchin]

expanding to int -> trunacting to byte , no?

[odd ember]

might be

[torpid hound]

Take out the steps to isolate where its zeroing.
Enum - int - print
Enum - int - enum - print
Etc.

[tiny prairie]

is there a way to append 1 array to another using only uniques. instead of having to go foreach loop and using add unique

[grand oasis]

hello, does anyone know if I can reference each chunk in a chaos fractured mesh system?

[obtuse current]

@torpid hound @odd ember I don't think it has to do with the int to byte conversion, for example, these both print the same results, where it should be different

The conversions seem to all be correct, in that they are appropriately always 0 or 1 as expected, but plugging those byte values into the enum results in the same enum (index 0) each time

[maiden wadi]

Magic. Barring that, not really.

I mean you could dump them into Sets maybe. Can't remember how blueprint handles adding arrays to sets. Could work, but it's the same thing internally. Just loops over the members to check and adds them.

[tiny prairie]

il try something with sets

[dawn gazelle]

Convert to a set.

[silk hinge]

Hey guys, I'm having a little trouble finding something, Like I literally just want to stop running a behavior Tree, The "Run behavior tree" node set up with no value dosent do anything, any ideas of a node ? I can always run an empty bevior tree to make the AI stop, but I'm pretty sure there is a "Stop running behavior tree" node, right ?

[blissful grail]

https://forums.unrealengine.com/t/stop-ai-behaviour-tree/303473

2nd link in Google

[silk hinge]

thanks, I belived I tried that into the AI itself, not into the controller x)

[bright harbor]

so i'm trying to make a system to allow me to swap my character at runtime, and i tried this, but for some reason randomly sometimes it will not put me on the new character, but rather just put the character in the ground and not have any input

this bit of blueprints is on all the characters, and the get character macro gets the class of the current character

looking closer at things, it appears when the camera gets put in the ground, no new character is spawned, and all that remains is a camera actor

[odd ember]

what's inside the macro

also I believe you don't need to unpossess before possessing anew

also I'd ensure that the controller you're giving is the controller of the character you are using

[bright harbor]

this is the macro

[maiden wadi]

That really should be a function with a class input and a boolean output.

Not the problem though.

[bright harbor]

i tried but the problem is when i do that, the create actor won't send out a pawn, just an actor, meaning it won't work with the possess node

[odd ember]

that makes no sense?

[maiden wadi]

I mean the macro you're using the get the class and the == class check you have on your branches.

[onyx frigate]

Hello, I am using set view target with blend, and it works great. The first time I have a smooth blend, but the second time it's called it's instantaneous. What is the reason ?

[odd ember]

is the time set to 0?

[onyx frigate]

No blend time is set to 2s everytime

[bright harbor]

that's what i thought too, but i stand here with evidence of unreals oddity

[onyx frigate]

Don't mind the spaghetti, it's a POC

I have a camera rig with CAM_IDLE. I press a button and it's blending to CAM_PLAYER. but after that, whatever blend I call, it's always instant

[odd ember]

it's not an oddity, but probably the default class is set to object or actor in this case, which is why you get that behavior. but that is also not what we were referring to

[bright harbor]

oops, my bad, did you mean the branch checks?

[odd ember]

yes

[bright harbor]

gotcha, i'll redo those, and i tried removing the unpossess and still nothing

[native ice]

hey, i'd love some help. I have a blueprint spline which uses a line trace to snap to a surface but i'm struggling to get the spline mesh to replicate along the final spline. any ideas? - this is what i have so far. https://blueprintue.com/blueprint/jrtuppz3/

[odd ember]

check what the controller is possessing

[bright harbor]

i have it connected to the character being spawned

[odd ember]

right but you're saying it only sometimes possesses it

so check what it possesses in the cases where it fails

[wet grotto]

Hello, Add controller pitch Input not working! I tried everything but it does not work any idea ? I feel like it is a bug.

[bright harbor]

how would i find what it's possessing?

[odd ember]

is this inside the pawn or the controller? if controller is tick enabled? if in pawn, does this event also exist in the controller?

[odd ember]

I think the function is GetControlledPawn

[wet grotto]

It is inside the main character blueprint and there is no controller input.

When I connect that to yaw it is controlling it but not other way around.

[bright harbor]

i had it print when i did the switch and possessed, and whenever it failed it showed the correct name, but it still did the camera in the floor thing

[odd ember]

the camera floor thing is probably setting the location to 0,0,0 which is default behavior

[bright harbor]

that appears to be correct, yes

[odd ember]

what happens if you use SetControlRotation and modify the pitch of that?

and what's your input pitch scale?

[odd ember]

it's likely in the player controller

[restive token]

random: is it possible to use the navmesh as a render target? or as something to generate a minimap sort of thing

[odd ember]

possibly? not sure if it's possible in blueprint though

[wet grotto]

I fixed it thanks for the help CE

[odd ember]

how did you resolve it? just for posterity

[wet grotto]

It was my fault, I enable the pitch and fixed.

[bright harbor]

i'm still stuck, not sure what it could be at this point

[odd ember]

what did the possession message say?

[torpid hound]

Probably not in blueprint. The core data is held entirely in cpp and the render for the debug view is done direct in a scene proxy that's tightly coupled to the navmesh actor, so there's nothing that would be easy to extract and render out. It's not too much work to grab that data and reuse it for a mini map in cpp, but also not trivial either

[bright harbor]

it said the character it was supposed to be possessing, but the camera still returned to 0,0,0

[odd ember]

how often does this happen?

[bright harbor]

but it could also be very sporadic

correction, it's pretty random

[torpid hound]

Or maybe you could set something up work in editor and render out a single component from a top down view? If that's the case then you probably could just render the RecastNavmesh actor as long as the debug view were on. I don't know if that's possible though

[bright harbor]

@odd ember

[odd ember]

I don't know why you keep pinging me when you have no new information. I know as much as you do

if it's happening randomly or because the switch is too fast perhaps it's a same frame type issue

but equally I've said how you could optimize your code so that your minimize risk of these issues propagating

[bright harbor]

my apologies, i'll see what i can do, thanks for all the help

[native ice]

anyone here good with bp splines and stuff? i'm not sure what i'm doing, been following a few tuts and i just want to be able to spawn mesh along this spline - at the moment there's a linetrace to make the spline stick to the ground, but i just want some mesh to spawn along the line. This is what i have at the moment, would appreciate some assistance - cheers https://blueprintue.com/blueprint/jrtuppz3/

[main pollen]

I am trying to do something similar. I want to add two spline points in a world in real time and then connecting them together

[native ice]

oh, like an intersection?

when i mean connect two things together, i meant two separate lots of code together.

[main pollen]

oh okay

can someone help me with this? I'm trying to spawn an actor at the position of my cursor in the world space but with this blueprint, it spawns the actor at where my camera is at. I guess I need to use "world direction" too but Idk what to do with it or what to connect it

[odd ember]

get hit location under cursor?

[main pollen]

thank you solved it

much more easy with that

[frank spear]

Does the Blueprint version of GetComponentByClass not work with derived clasess? If I try to get a component of a base class type from an actor with a derived class component, it returns none:

[dark crow]

Blueprint Debugger is unreliable, did you actually check if it's truly none?

[frank spear]

Well, the code beyond IsValid doesn't execute, so as far as BP is concerned, it's none.

if I do a GetComponent<> in C++ it works with derived classes - it seems that in BP it does not

I was just hoping to avoid needing to write a new C++ class for a simple thing that can be done in BP

[dark crow]

Yeah, I think it searches specifically for that class

[frank spear]

Actually, I have it running in the debugger now - it runs the same code as FindComponent by class, the bonkers thing is the IsA test is Failing!!

OK, this is bannanas - when I step into the IsA() check - it returns true..... but FoundComponent never gets set?

I'm going crazy

[obtuse herald]

It does

Your case just seems to behave diffrently

does your actor contain a static mesh?

actually create an new actor

just static mesh

and try it there

[frank spear]

I've tried it with both static meshes and ShapeComponents - result is the same

the crazy thing I'm getting now is that the IsA check actually succeeds and returns true - but in the debugger the FoundComponent is never set (stays null) I'm not sure how the code block is getting skipped

[obtuse herald]

it shouldn't

did you try to access a function of the component?

try that and see if it actually errors

[frank spear]

Ok, so I see that GetComponentsByClass (with an 's') actually executes a different code path

[obtuse herald]

yeah that returns an array

[frank spear]

just tested it with my blueprint by replacing GetComponentByClass with GetComponentsByClass - and it works

[obtuse herald]

that is weird

[frank spear]

But GetComponent (no array) does not work - at least for me

in the C++ GetComponents uses the templatized version of the function, while GetComponent does not

[obtuse herald]

I thought you accidently edited the IsValid macro

but that it actually just does not work is weird

[frank spear]

No, I haven't changed the macro - I just finally got fed up and went to visual studio and am now seeing that these two BP functions follow very different code paths

[obtuse herald]

just remember, the blueprint debugger is not reliable whatsoever

always print your values

[frank spear]

Well, I guess this is the way for now for me - I mean, it's not super important code, but I'll need to keep an eye out, it could be that GetComponentByClass is broken in 4.27.2

[obtuse herald]

wait let me try actually

I actually almost always use GetComponentsByClass

I just assumed they would behave the same

[frank spear]

GetComponents does this:

GetComponent does this

[trim matrix]

no idea whats cuasing this but it is blueprint caused... just not in the way you'd expect. I'm trying to organize my files but whenever I try to move the contents of the blueprints folder (They appear to be the ones from that one test level that shows the materials and effects like the smoke and light) the engine crashes. It dont even get to the part where i can copy and paste, dragging them is enough to cause the crash. Is there some aspect of blueprints that cause this jank orrr

[frank spear]

When you move a folder with a whole lot of assets that are being used in the game the editor will try to redirect a ton references - which can go wonky

[pale iris]

I am having an issue with moving some pawns they face the wrong direction when moving and I enabled orient rotation to movement but it still doesnt work

[trim matrix]

Ive manage to narrow it down, its a single default blueprint. When i open it the engine crashes as well

[frank spear]

the only way I've been able to successfully move a load of assets into another folder is to export / import using a tertiary project

[trim matrix]

"BP_Light Studio"

any idea what may be causing this one blueprint to crash the engine? I've never touched it before

[obtuse herald]

Unreal engine create redirector files where your old assets were

you can clean them up when you right-click on the folder

[trim matrix]

still crashes after that

[frank spear]

no Idea what BP_LightStudio is - is it from a marketplace asset?

it could be referencing code that is crashing

[trim matrix]

nope, this comes with the 3rd person blueprint starter

thumbnail is black and interacting with it in anyway crashes the engine

[frank spear]

do you get a crash log when it crashes?

[trim matrix]

Assertion failed: !IsInsideRenderPass() [File:D:\build\++UE5\Sync\Engine\Source\Runtime\RHI\Public\RHICommandList.h] [Line: 3377]```

for context i have no map open at the moment

[obtuse herald]

both nodes just work fine for me

[trim matrix]

so it shouldnt be rendering anything at all

[frank spear]

found this

https://issues.unrealengine.com/issue/UE-121577

[obtuse herald]

that's my setup

[frank spear]

So at least one other person is having the issue

If you're just prototyping something, I would just avoid using that blueprint - maybe delete it from the template

[trim matrix]

yeah, they mention it not being in 4.26 so perhaps its a 5 issue?

[trim pollen]

(sorry to interject, wish there was more than one channel...)

I'm trying to create a slider to control my directional light. I can create the slider, and I can control the directional light with a public variable, but I can't seem to figure out how to set the slider value to the variable (or directly to the transform) no matter what I do. I have a widget blueprint and a light blueprint. This is the error I get, so I guess I'm not setting "target" correctly? Blueprint Runtime Error: "Accessed None trying to read property Target". Blueprint: NewWidgetBlueprint Function: Execute Ubergraph New Widget Blueprint Graph: EventGraph Node: Set lightRotationZ

[frank spear]

Maybe, it looks like the bug report is specificaly for 5

[obtuse herald]

your widget needs a reference to the target

seems like you never set it

[trim pollen]

but how

I thought it was set to directional light

[obtuse herald]

yeah that's just the type

but it doesn't know which directional light you mean

you could have mulitple

(but for directional lights you usually only have one)

this should work for your case

or wait actually

did you create a custom directional light?

[trim pollen]

I created a directional light from the "place actors" tab, then I converted it to a blueprint.

[obtuse herald]

yeah alright

where do you create the widget?

[trim pollen]

User Interface -> Widget blueprint 🙂

[obtuse herald]

no I mean in your code

you need to add it to the viewport and stuff

is it just in your player controller?

[trim pollen]

in my level blueprint

[obtuse herald]

ah ok

[obtuse herald]

yeah drag return value and place a 'SetTarget' node

[trim pollen]

drag from what?

[obtuse herald]

that here

[trim pollen]

lol, on which node?

[trim pollen]

ok

[obtuse herald]

connect it before add to viewport

then select your directional light in your level

[trim pollen]

okay then drag that in and set it to target?

[obtuse herald]

exactly

[trim pollen]

the first "set" node won't connect to anything

[obtuse herald]

that should be right

you maybe want to rename your variable to avoid confusion

[trim pollen]

i mean i will once this works

not sure what that accomplished

[obtuse herald]

it should work like that

[gentle nebula]

Are there pointers in blueprint? can i input a boolean pointer into a blueprint function/macro?

[dawn gazelle]

You can pass by ref.

[trim pollen]

nope, doesn't seem like it.

[obtuse herald]

You need to do that with reference variables, because you are basically telling your variable when you create it "You will receive (in your case) a directional light" and when you set it you're actually sending to variable to it

[gentle nebula]

Would that be the same as a pointer?

[trim pollen]

top is level blueprint, middle is my directional light bp, bottom is widget bp

[dawn gazelle]

In a basic sense, yes. For example:

[obtuse herald]

it's like a package, you are waiting to receive one, but when no one delivers it to you you'll just wait endlessly

[gentle nebula]

Really appreciate the information!

[obtuse herald]

do you still get the error?

[trim pollen]

there's no error, it just doesn't work

[obtuse herald]

alright, that's already better

[trim pollen]

lmao

my game just crashed but i'm pretty sure lightrotationZ is just print out 0s

one sec

[obtuse herald]

alright

ah right

did you change the max value of your slider inside your widget?

[trim pollen]

it goes from 0 to 360 ...

[obtuse herald]

ok

[trim pollen]

wait, it might be working

hold on

yep! thank you!

😄

[obtuse herald]

you're welcome

[gentle nebula]

why am i getting an infinite loop error ?
Mouse up would turn the Boolean false
Is it possible to set it to ignore infinite loops?

[obtuse herald]

while loop runs continuously in the same frame, until the condition changed

however it will block the main thread while it's running

meaning the function never returns

meaning it will just run endlessly until the editor throws you out

[gentle nebula]

Meaning the loop has to complete before it gets to the next frame?

[obtuse herald]

yes

that's probably a better phrasing

[pale flare]

can anyone help me, im having an issue where whenever i take damage it breaks my health regen

[gentle nebula]

Is that the same with the function as a whole? it has to end before next frame?

[obtuse herald]

yes

everything has

expect the functions with a small clock at the top right

like delay

[gentle nebula]

Can i use it in this case? to have the loop keep going?

[obtuse herald]

no, that won't work

you need to call your function on every tick

[odd ember]

it doesn't make sense to talk about pointers in BP. everything is a copy, technically

pass by ref is the closest you get to being able to use pointer like structures

[pale flare]

can anyone just tell me what might be wrong this

[gentle nebula]

Just wanted to have a copy that's updated i guess

[frank spear]

GetComponet(s) worked - thanks for letting me rant

[gentle nebula]

thank you for the explanation!

[odd ember]

okay, is there any reason for this?

[gentle nebula]

it was for that loop inside a function i tried making but i guess it isn't the way you do stuff in blueprint since it didn't worked

[odd ember]

why would a parameter not suffice in this case?

[obtuse herald]

you're setting your 'mana p' when you probably want to set your 'health p'

[pale flare]

i feel dumb, thank you

[obtuse herald]

you're welcome

[pale flare]

but it still breaks the regen

means im still missing something

[obtuse herald]

it looks fine to me actually

[pale flare]

whenever i shoot the mana regen works fine, but when i lose health both mana and health regen break

[obtuse herald]

you did change that node, right?

[pale flare]

i did

[gentle nebula]

i wanted to have a drag function, that would be initiated when the mouse click on a certain actor. But i wanted to have all the logic inside of a function for the purpose of having "clear code".
I thought that if i could have a pointer of "mouse down" which is updated when mouse is up or down, i could control the loop which inside the function, i understand that it is a wrong thinking about how stuff work, but wonder how to do it alternatively, without having to much stuff in the same page
Maybe creating another event graph?

[pale flare]

i got it working

for some reason the mana regen got set to zero and was bein funky monkey

[obtuse herald]

do you mean actor with object?

[pale flare]

gotta say i love blueprint coding

[gentle nebula]

Sorry, i meant when i press on an actor

[obtuse herald]

it really helps at seeing how stuff works (when you sort your nodes at least)

[obtuse herald]

you could do something like that inside your actor

[gentle nebula]

Thank you very much for the solution!

In that case, would that make sense to have many event graphs?

[obtuse herald]

I actually use never more than one

it's just personal preference I guess

doesn't really change anything regarding functionality

[gentle nebula]

Don't you get to the point where the event graph become too filled?

[obtuse herald]

Not really actually

But filled is different for every person I guess

[sour goblet]

I have a quick question, is there an easy way to keep a camera in the same spot when changing characters? I've tried storing and passing spring arm location and rotation but it just messes up all the camera movement.

[gentle nebula]

I have 2 eventgraphs on the same actor,
1 event graph have a set timer by event,
what would be the best way to bind an event to that timer at the second event graph ?(cannot simply copy past the custom event and duplicate it it seems)

[obtuse herald]

I already closed my project but there is a 'create event' node

[gentle nebula]

I have done it but not sure how it helps to the problem, maybe i should explain better

Since i created a second event graph, it is slate clean, so i have no access to all of the previous event graph events

Any way i can also have these event in the second event graph?

[obtuse herald]

If you want to override it, that is not possible

it's like having 2 functions with the same name

if you want to call the event you can still do that via the normal way

if you want that red square (delegate pin), use the 'Create Event' node

[gentle nebula]

If i have a timer event, i only have that event on one event graph, can't i use both event graphs with one timer?

[obtuse herald]

I have two event graphs

MyEvent is my main one

now I want to create a timer by event in my 2nd event graph

and that is how you would do it

[gentle nebula]

ok but now lets say you want to have "MyEvent" on the second event graph too

[obtuse herald]

you mean you want to define it?

[gentle nebula]

Better ask, can you connect two events to one timer?

[obtuse herald]

like have 2 'MyEvent' with different behaviour?

[obtuse herald]

ahh

you don't

create 2 timers

or create a event that calls both events

[gentle nebula]

I'll try it

[obtuse herald]

I'm heading to bed now tho

good luck

[gentle nebula]

Thanks for everything, have a good night!

[lofty ravine]

How can i get insert a file in a foler and it reads an array and is usuable in combo box

[gentle nebula]

Is there an equivalent to that in blueprint?
I want to run a function each time a certain variable is set