blueprint

[paper gate]

and it gets set to "to specific location" by that collider and fed the vector

which it should just go to that location and sit there unless told to do something else but it wants to sit off to the side for some reason

[lofty rapids]

does it go anywhere ?

[paper gate]

what do you mean?

[lofty rapids]

does it actualy interp to anywhere ?

or it just sitting there

[paper gate]

oh ya it moves just to the wrong spot.

[lofty rapids]

ok so show where you set the target location

[paper gate]

This is inside that collision box actor

the "target location" is being set by one of those 3D widgets

[lofty rapids]

where do you actually set the value ?

because all i see a variable being used in a function

but you need to set it

is the target location default to 0,0,0 and thats where it's going to ?

set the default to something else, does it go there ?

[paper gate]

no im doing an "instance editable" with one of these

[lofty rapids]

oh i c

target location is the location

[paper gate]

ya and it then passes that back to the camera component

but the camera ends up off to the side for some reason despite it being told interp to this spot with 0 other math involved

[lofty rapids]

maybe you need to transform to world

[paper gate]

I think I am tho this is inside the camera comp

and I do this on game start to initialize everything

[lofty rapids]

well what i'm saying is the target location might be in relative space

[paper gate]

oh...

how do I check that? I didnt know just a vector variable could be set in world/relative space

[lofty rapids]

use transform location

plug in the actors transform

and the location

see if that fixes it

try to use the output of that in your interp

[paper gate]

the transform of the collider? cause that will just move it to that things location no?

[lofty rapids]

try to get actor location, and add the variable to that

[paper gate]

ohhh

[lofty rapids]

the actor being the one that holds the target position

[paper gate]

so collider location + the variable itself

[lofty rapids]

try it and see

[paper gate]

ok that worked, first off thank you that was driving me up a fking wall

second, I dont fully understand the vector math thats working there

why wouldnt just using the location of that 3D widget just work as a locator in space?

[lofty rapids]

because it's relative to its container

not absolute

[paper gate]

ahhh ok

duley noted. But that will let me actually polish this thing up thanks a lot

[mint forge]

Hi all. Please help. Would this be possible and how to achieve it > While holding a key, a float value will rise with delta time and when it reaches certain amount, let say 100, to automatically break/cut the holding input from a key, no matter if user continues to hold it. In short, how to break/cut hold input from a key. Am i clear enough ?

[lofty rapids]

make a boolean, set it to true on started, false on completed, but you can set this boolean false anytime you want while the key is being held down

but wdym "break cut" ? you want to trigger something when your pressed ?

booleans i think is what you want

something like canRun on triggered, then set it to false at some point, it will shut off because you do nothing on false

[mint forge]

sorry im not good with terms. basically how to disable "held down" input, disable incoming data from that input, idk how to say it differently

[lofty rapids]

this

is what you need

a boolean that you branch on triggered, and run true execution

nothing from false

then just shut the boolean off when you want to stop it

set the boolean to false

and it will not run the true branch

[mint forge]

i need "Stop Listening for Input" but for blueprint. Stop listening is for widgets

something like that

[faint pasture]

set enable input?

[mint forge]

ok there are enable and disable Input nodes. ill try both

[faint pasture]

I couldn't recall if it was enable/disable or SetEnable(bool) but that's the general idea, try that

[dusky crane]

Im having an issue where when i hit a breakpoint all widgets are completely hidden. makes it really hard to debug my UI. Anything i can do to stop it from going invisible?

[lofty rapids]

are you setting it invisible at some point ? idk why it would just randomly go invisible

[dusky crane]

nope, just as soon as the breakpoint hits the entire ui is hidden

[lofty rapids]

this is strange, if you go after or before is the ui still visible ?

[dusky crane]

its hidden until i continue execution, then its visibile again

and im not actually changing anything visibility-wise at any point

[lofty rapids]

so it doesn't matter where you break point ?

any place will blank out the ui ?

did you restart the engine, the machine, and update drivers ?

[dusky crane]

it does have to hit the breakpoint, just placing it isnt the issue. I havent yet tried restarting or updating drivers

[lofty rapids]

i'm asking if it doesn't matter where you put the breakpoint

or if its only on this particular spot

[dusky crane]

oh yeah it doesnt matter

ive tried it on different functions, as soon as it hits the breakpoint the ui is hidden

[lofty rapids]

what version ?

[dusky crane]

5.5

[lofty rapids]

have you ever used the widget reflector ?

[dusky crane]

I have not, i only found about it while trying to find a solution to my ui dissapearing online 😅

[indigo bough]

Hey folks, is there a reliable way to get the editor camera location at editor time within a standard actor blueprint?

I'm doing some camera post process logic via a custom mesh overlap, and while this works flawlessly at runtime with my pawn camera(s), I would love the editor preview to show the same thing from the editor camera's perspective.

If I can get the editor camera's world location at tick I can just do a simple point overlap check.

[dusky crane]

@lofty rapids While i wasnt able to figure out what was causing my ui to dissapear during breakpoints, i was able to fix the bug i was trying to figure out in the first place. Hopefully wont need breakpoints to debug my ui again anytime soon. Thank you so much for trying to help me to figure out the problem 😄

[modest pecan]

can anyone help me with comunicating betwen blueprints?

[rose citrus]

If I have a sequence within a function, and if there is a return node in the middle, does the sequence and function stop there, or does it continue until the end

[graceful sage]

wym middle

once it hits return it will exit the function

[rose citrus]

For example, the sequence has 4 pins, and say in the second pin, there is a return node and I don't want the function to continue. Then the last 2 pins won't execute.

[rose citrus]

That's what I wanted to make sure. Thanks

[frosty heron]

Hitting return is the end of the function

@indigo bough https://forums.unrealengine.com/t/accessing-the-position-of-the-editor-viewport-camera/297487/7

[modern horizon]

How do i implement a anim bp to my main characters blueprint? im a bit new

[paper gate]

simply select the skeletal mesh in your blueprint. On the right under details there should be a tab for selecting your animation blueprint

[cyan wren]

If i wanted to trigger an event whenever a player exceeded a certain velocity, would i have to strap a branch onto event tick? It seems taxing and i want to make sure theres not another way

[lunar sleet]

It’s not really that taxing, just math

[cyan wren]

im new, i dont know whats bad for the engine yet, id be adjusting the fov proportionally to velocity past a certain threshold, figured that executing so many times per second could be problematic but idk

[lunar sleet]

It’s not

Tick is not something you should be afraid of

Just don’t do dumb things like putting a delay on tick or spawning actors on tick

[cyan wren]

gotcha lmao, yea nah

i appreciate you!

[modern horizon]

Ok, ty

[steady night]

Hi, What am i doing wrong O.o ??

im trying to change the scale of a Niagara system

[tight pollen]

some ideas?

I have no idea why I don't have anything in "Details", there are no references to this slot, it's just in the Child Widget

[frosty heron]

missing detail panels normally point to bp corruption, at least in my experience.

[tight pollen]

yep

but how to fix it now

something with namedSlot

[frosty heron]

is there any c++ involved? that's how you normally break it.

if not, just create a new widget and see if the problem remain.

[tight pollen]

everything in blueprints

[frosty heron]

I just create a widget named slot and add an image as the children, no issue with the detail panel.

[tight pollen]

and copy this children widget

duplicate

I have this problem after duplication

sometimes

[frosty heron]

@tight pollen named slot can only have one children?

so why would you duplicate there.

[tight pollen]

I have 1 main widget and for example I want to have 6 other children. instead of creating 1 from scratch, I duplicate 1 of those 6

and change the content of this namedSlot

I just want a different look, but the logic is the same

[tight pollen]

I know that if I wanted to add more content, I would first have to add, for example, an overlay, a horizontal box, etc.

I duplicate the subclass

/ Widget

[ancient dagger]

Is there a way to "Properly" replicate animation montages? basically, i want the player to play a animation when opening or closing a door, i got the door rotation logic set up, but i can't seem to figure out to get the animations to play properly, for some reason it plays on the character in the editor viewport instead of the standalone window.

[maiden wadi]

You told it to play on the first character, not specifically the one interacting with the door.

[ancient dagger]

Yeah i just figured that out, so is there a way to make it play on the character interacting with the door?

[maiden wadi]

That's up to your interaction system. I'm assuming that is what your pointer named Interacor is on the interact event? I'm not sure what you've passed there. If it's the character you can pass that to the multicast that plays the montage. Make sure to pass it through the RPC.

[ancient dagger]

Ok, seems like i fixed it, now it works as intended, thank you!

[frosty heron]

what ever you fix, you will just come up with another bug ahead.
You shouldn't use multicast for Stateful behavior. If something needs to be sync, dont use Multicast. RPC is a one time event.

You will need to handle the door closing / opening with OnRep.

for polish, use struct and add time stamp data but I won't worry about that for now.

[ancient dagger]

Wow ok i didn't know that lol, thanks

[maiden wadi]

I figured baby steps. 😄 Realistically this shouldn't care about the character and we should be talking about an actual interaction system, but 🤷‍♂️

[maiden wadi]

It's technically valid as a wildcard. 🤷‍♂️

[narrow sentinel]

am i being stupid here, I'm sure thats how I've set the scale of a noise texture before

sorted it, the material editor was being odd

[tame bay]

Hi there !
I'm quite new to UE and am trying to have a BP spawn another one when pressing an input. I have the spawner BP in the level but when pressing spacebar, nothing happens, did I forgot to do something ?
These are the BP, IMC, and IA
Thanks in advance 🙂

[maiden wadi]

This code is in the blueprint that is in the level?

[tame bay]

Yep !

[maiden wadi]

You need to call EnableInput with the playercontroller on this class. By default only the Level, PlayerController, PossessedPawn have input.

[tame bay]

It's my first time using Blueprints and EnhancedInputSystem so I'm trying to figure things out but it's a lot to take in haha

[tame bay]

Okay thanks ! Where sould I put it in said class ?

[maiden wadi]

You can probably put it right after the adding context mapping if the controller is valid then.

[tame bay]

Hmmm, doesn't change anything, when I play in editor it still doesn't spawn anything when pressing spacebar
Is there a setup to do for the enhanced input actions to work properly ?

[maiden wadi]

I would start with some waits and a debug print at the end. Like...

Bit hacky. But it makes sure that the controller is ready. Things added to the level can be early.

[empty anvil]

Made a super simple blueprint setup to play a basic fade in/out animation on my UI, however for some reason it doesn't work unless I add a delay of at least 0.2 seconds before calling the function (or call it on event construct). I've checked with breakpoints and the "Play animation forward" node is still called even without the delay, it just decides not to play. Anyone know what's going on cos this has me stumped lol?

[maiden wadi]

Where are you calling it if not construct?

[empty anvil]

I call it from a separate weapon blueprint, I've confirmed that all references to the widget from there are valid and like I said the animation node is being called and it's still not playing.

[maiden wadi]

Can you show the calling code?

[empty anvil]

Sure, literally just this, the nodes before it are just a function to get the player ref which loops until it returns valid. It could be an issue with the player ref but I did try setting up another is valid node before calling the anim function and it returned true.

Oh and I should add I call other functions in the same widget blueprint just after which work just fine.

[maiden wadi]

Is the widget added to viewport or it's parent before this is called?

[empty anvil]

Yeah the widget gets added to viewport by the player on begin play, well before this function can ever possibly be called

[maiden wadi]

Odd. I'd done plenty of PlayAnimation calls and I've never witnessed that. It's also odd that it works on construct as well but not long after that without a delay.

Can you double check that you're not accidentally visually overwriting it with a second call? Like calling fade in and then fade out right after?

[empty anvil]

Good shout but no unfortunately, doesn't seem to be the case.

Nevermind I figured it out - the solution was that I'm a dumbass 😭. Another blueprint was removing the widget temporarily at the same time I was trying to call the function. Thanks for your help anyway lol.

[maiden wadi]

Lol, that'll do it. 😄 Glad you found it.

[tame bay]

Hmm I've tried and there's the "LogPawn: Error: EnableInput can only be specified on a Pawn for its Controller" that pops up, tried looking it up but didn't find an answer that fit the problem

[maiden wadi]

Is the blueprint you put in the level a Pawn?

[tame bay]

Yeah

[maiden wadi]

Pawns are usually possessed for control. If you're not possessing it, you probably won't want it to be a pawn.

[tame bay]

Okay !
Basically what I was trying to do after following a lil tutorial was have a blueprint in my scene that just spawns an actor on input

But since I'm new to both BP and inputs system i'm having a hard time figuring it out on my own

[maiden wadi]

Yeah.. 😄 Input gets fun in Unreal.

[tame bay]

The rest of the blueprints should work they're partly from said tutorial but I can't figure out how to simply spawn an actor 😮‍💨

[maiden wadi]

You can try reparenting your BP from Pawn to Actor and see if it works.

[tame bay]

Okay well the error is gone but now it says I can't spawn an actor from a NULL class weird

I suppose it's talking about my Ground Slash actor I'm trying to spawn but idk why it says it has a null class

[maiden wadi]

Click this purple variable and show it's details panel.

[tame bay]

Okay yeah simple dumb "error", there was no default value

Lmao so it's fixed only have to add speed and see how it works thanks !

[pallid cypress]

Hello I make the material and mesh that is dissolve the other mesh object and it's work fine on viewport but in game mode nothing happening. What could be the problem?

[lofty rapids]

so play in viewport it works ?

what does the material look like, is it big ?

do they have collision ?

because if they collide in game they may spread out

[pallid cypress]

I'll show you

[lofty rapids]

it's probably the collision if it works in editor, but not in game

[lofty rapids]

#materials might know more if nobody knows in here

[pallid cypress]

ok

[spice shore]

im having inssues with setting up a flashlight, ive been foloowing a few tutorials closley and getting diffrent results. I am trying to have it so when you press left click on the mouse, it flashes a red light. I have it set up as an input key, as well as in my player blueprint
However i seem to spawn in with it, and once i click the button to turn it on/off, it seems to turn off permantly
(One of the Videos i tried to follow https://www.youtube.com/watch?v=tFYa5rgWWA4)

nvm i found the issue but just clicking new visability im a dumbass

[little helm]

Is there any way to open comboBox using gamepad or keyboard in unreal engine ?

[maiden wadi]

Focus it and hit A/X. I believe Enter or space work on keyboard.

[little helm]

Oh got it thanks!

[dim geyser]

im making a name tag so if your e.g an owner it give u a special tag called owner on the widget but its not working can eny one DM me and help me with this

[honest arch]

how do i disable the slow-down for walk/run when a destination is being reached in the movement system component. i want the movement to be a consistent run speed

or do i have to not use the base animation schematic

[maiden wadi]

Sounds like character's CMC settings. Braking, etc.

[honest arch]

i tried those.

i put breaking to 10000, and it doesnt change it to instant. when the character reaches a few steps away from its target it switches to walking animation and slows down to reach it

[maiden wadi]

AI or player?

And are you using anything special or is this a basic animbp on a generic character?

[honest arch]

player, but top down click navigation. i found it tho, instead of walk cmc i needed to check this off

you did lead me to searching for all brake related settings, so thanks for your help

[maiden wadi]

Nice find. Is that CMC or character?

[honest arch]

CMC

[maiden wadi]

Will have to try to remember that.

[honest arch]

oh wait

idk if it is

[modern horizon]

does anyone know why, whenever i shoot my hand out, it moves my location super far away to the left?

[honest arch]

ok it is i double checked

[modern horizon]

it has to be something to do with the coordinates. ill send them over in a second

[modern horizon]

ignore the bottom 2 numbers

[honest arch]

need more context

[maiden wadi]

Need more context. This shooting hand thing runs and then the character moves to the left?

Are you doing any like set actor locations, or?

[modern horizon]

its like a grapple hook, i shoot the hand out to grab a object and it just teleports it far away from me

[honest arch]

if you have any video recording software, take a video of the issue

and a more full picture of your graph

[modern horizon]

hold on, let me try something really quickly to try and resolve the issue

Ok let me try getting a video

ignore the cord btw

thats a place holder for the mesh

[honest arch]

i dont see you moving

in fact, this looks like its working pretty well?

besides that weird shadow

[modern horizon]

No.... ignore the cord, that was a place holder for the skeletal mesh

[modern horizon]

im looking at the weird shadow

because

that is the skeletal mesh

its teleported far behind me and i can't really show you, other than the shadow.

[honest arch]

you can detach from the character with f1 while in the PIE

and then use the camera to look around

[inland walrus]

Am I right in thinking this should find the lowest value between slot1 slot2 and slot3 and then minus it from the other values? (only working on slot1 rn)

[honest arch]

also pro tip, go to your OBS output settings and increase the bitrate

try 3000

[modern horizon]

something to do with the coordinates

[honest arch]

so is this a different object than the grapple itself?

[modern horizon]

Yes, i said it was a cord

just ignore that. it was a place holder for the skeletal mesh

so i could get my code to work

[honest arch]

oh cord. i thought you meant short for coordinate

[modern horizon]

ah ok

[honest arch]

ok well you didnt show me enough of the graph. give me a bigger picture of the entire function

[modern horizon]

ill show you both the anim bp and where the function happens

anim bp

function bp

theres more, but that is where it happens

[honest arch]

whats to the right of that though

[modern horizon]

shouldn't have anything to do with the skeletal mesh i believe.

[honest arch]

why are you adding actor location to the anim grab point

[modern horizon]

i got told to

it does the same either way

[honest arch]

ok where do you summon the cord. clearly that is working, so use whatever vector that you have for that

[modern horizon]

The cord is always there, it just changes the visibility

[honest arch]

and where do you set the location for that

[modern horizon]

or.

[honest arch]

and then you use this for the end location of the trace?

[maiden wadi]

What do you mean "minus it from the other values"?

[modern horizon]

grab point is the impact point. i'm not sure what you mean though

oh

no, this is a tick

if it ever notices that the "is grabbing" function changes, it executes this code

[honest arch]

ok well this is based on Grab Point correct? so, just copy whatever youre doing here to set the grab location

instead of whatever this is

[inland walrus]

All good, I think I've solved it

Slot01 = 5
Slot02 = 2
Slot03 = 0

Which means it should then set Slot01 as 3

[honest arch]

youre setting grab point here, so clearly that is valid

do this after the trace

and input that instead

[modern horizon]

now its closer. when i do this

[honest arch]

great!

ok so now is it possible youre not setting rotation?

its still horizontal to the ground

[modern horizon]

would be correct

but i don't want it to really rotate my arm.

[honest arch]

no you need to rotate the grapple

[modern horizon]

Ok, what do i set rotate to then?

[honest arch]

well thats a good question. you need to do some math. calculate the angular difference between the start point and the end point, and set that as a rotator or something

im not rly a math guy

[modern horizon]

so theos

[honest arch]

but you have a cord already, so why not just use that instead of a solid grapple

[modern horizon]

i just opened up modify bone

and found out it wasnt on world space

i changed it

now its just going to 0 0 0

[honest arch]

you dont want it on world space

its a local thing

[modern horizon]

ok ok

[honest arch]

i dont rly know anything about bones or models or anything tho. id assume you want local space, and any world-space calculations you would transform into local based on your character

[modern horizon]

ah ok

[honest arch]

so why have a solid grapple btw. why not just have the grapple claw, and the cord. you shoot the grapple claw to the location, the cord represents the actual cord a grapple would have, and youre good

[modern horizon]

because this is supposed to be the players arm

[honest arch]

oh

[modern horizon]

the cord just doesn't really do what i need

i don't know.

[honest arch]

ok thats fair. so you gotta figure out the rotation math then

google something like "formula to find the rotation of a line in 3d space with the start and end point"

then use that in blueprints

and then find out that there is a math node that already exists in blueprints that does exactly that

and then get depressed you wasted an hour doing it yourself

and then go eat ice cream

also, make sure the pivot point for your arm is the shoulder, and calculate based on that

[modern horizon]

alright

ty btw

[honest arch]

np np

[honest arch]

this would be a different direction to look into. little more free form, doesnt have any sticking actions.
you can combine this with some socket attachment kind of things maybe to make grabbing
https://www.youtube.com/watch?v=Hh4om_A7ufk

@modern horizon https://www.youtube.com/watch?v=xsvvA042l98

this might be exactly what you want

[modern horizon]

i fixed it

a bit

but ill take these into account when fixing my code

ty

[honest arch]

does anyone know how i can get my character to stop directly on top of the target location instead of right when it reaches it?

[prime stump]

Hi, I have fire alarm actors that when any single alarm is interacted with it'll trigger all fire bells in the map.. what is the best way to communicate this so that when the fire alarm is interacted with it starts playing the sound effect on every bell actor in the map?

I don't want every fire alarm actor having a direct references to all fire bells, I would rather keep them decoupled if possible and it also need to work for multiplayer too, I have an Interaction event through an interface that's implemented on the fire alarm actor which always runs on the server, on this actor it should just set a RepNotify variable 'Trigger Alarm' or something that will end up calling for all the bells to play the sound but what would be the best method to actually communicate between the two?

Also trying to avoid using a 'Get All Actor Of/With' in case I wanna expand it out later, but this also sorta rules out using an interface I think

Using an event dispatcher will need a direct reference to bind to it on the other actor creating a dependency

[maiden wadi]

You're not going to avoid GetAllActorsOfClass here unless you manually hook these all up to a manager actor in the level.

I mean you could also make them register to a manager and then do it that way. But realistically there isn't much difference between that and GetAllActorsOfClass.

[prime stump]

For this system I'm sure I can get away with using that or GetAllActorsWithInterface or something but I more so wanted to know how its handled at bigger scales cause 'GetAllActors' can be slow can't they? So you would create a separate class that references both actors directly to communicate messages across between them?

[blissful lagoon]

WHY AM I GETTING A COPY OF MY PLAYER WHEN I HAVE ALREADY SPAWNED.....I AHVE ATTACHED THE BP LOGIC

[maiden wadi]

GetAllActorsOfClass is barely slower than accessing a prefilled array of the actors. The only cost difference will be the array allocation.

That said. I'm vaguely curious if the sound system has something for this that is better. Materials at least have the concept of global material parameter collections where you can set a single value and it updates all materials using it. I wonder if you could simply toggle some sound value somewhere for this.

[prime stump]

Interesting.. that would be pretty danm handy if that's possible

[radiant coyote]

Hi, I'm using Unreal Engine's default Crouch and UnCrouch nodes. To make the transition smoother, I'm adjusting the camera's Z location manually. However, the problem is that when Unreal Engine performs a crouch, it instantly teleports the camera downward, which ruins my smooth transition.
How can I fix this?

[radiant coyote]

When interacting with this begin overlap box, you need to destroy the current character and then spawn the new one. Right now, you're spawning a new character without destroying the previous one

[blissful lagoon]

already tried that buddy

same issue is happening

[radiant coyote]

Can you send a screenshot showing how you tried it?

[prime stump]

Its jolting like that because I imagine your capsule itself is changing from standing height to crouch height immediately, smoothing out the capsule height change from standing height to crouched height using a FInterpTo will in-turn smooth the camera

[lofty rapids]

so your respawning in respawn game ?

but here you create a widget, this will create it every time

do you destroy this thing ?

[lofty rapids]

why are you destroying the controller ?

[radiant coyote]

I know, but the capsule half-height and the crouch half-height are different. When crouch is activated, the crouch half-height is set immediately, so I guess there’s no way to lerp it directly

[blissful lagoon]

you talking about the widget or player

[lofty rapids]

you can compensate for it

[blissful lagoon]

i want to spawn new actor

[prime stump]

Not sure using the default crouch and uncrouch events, im handling mine manually and im using the GMC plugin so that last node isn't in standard UE but this is how i'm doing mine,

Running that function essentially on tick

[lofty rapids]

boolean, isCrouching, offset camera

i think there is a built in boolelan you can branch with

[lofty rapids]

something like this

idk if it works i didn't test it but its the idea, you may have to play around witha f ew settings

[blissful lagoon]

anyone one have any idea what shoul i do ?

[lofty rapids]

what are you trying to do, and whats the problem ?

[radiant coyote]

No, when the Crouch event runs, it automatically sets the value inside Character Movement. So, we can’t set it manually via Blueprint afterward

[lofty rapids]

you can definately set the target offset

which will compensate for it

[blissful lagoon]

i have already respawned but my copy is aslo there as showend in video

[lofty rapids]

well your not explaining much or showing code that makes much sense, why are you removing the controller ?

and is respawn, spawn it again, andd thats the issue ?

i only know what i can see on here

[lofty rapids]

run this on tick

[blissful lagoon]

this is my code i am first destroying it because in my respawn event it is spawned again

[lofty rapids]

and is that working ?

[blissful lagoon]

no not working

[lofty rapids]

try get player character instead of geet player controller

[prime stump]

Remove the DestroyActor & GetPlayerController calls and show the code of your Respawn Game event

[blissful lagoon]

done that already also tried with pawn

code of respawn

[worn dune]

hi guys does anyone know how to make doors like in outlast like animation of opening and the player can't move and so on?

[lofty rapids]

get actor of class, bp third person character, destroy actor in this event

i would also add a is valid check

[prime stump]

What is it you're actually trying to do?

[lofty rapids]

yes run that code on tick, try it and see

[blissful lagoon]

every thing i wanted to do is already happening the issue is that i am spawing with a copy of mine as showen in video

[lofty rapids]

does the hand open the door on thee knob ?

[lofty rapids]

@blissful lagoon ^ this, do you understand what i'm saying ?

[radiant coyote]

It won't work you can try it yourself and see, my friend. It seems like you don't fully understand how it works

[lofty rapids]

it will wowrk, but if you think not thats fine

[blissful lagoon]

nope can you explain it easily

[lofty rapids]

maybe your right, but i'm pretty sure it will work

[prime stump]

Well there's a copy because destroying the player controller isn't the same as destroying your character/pawn

[lofty rapids]

get actor of class ? you know what that is ?

it's gets that actor in the scene

the first one of that class

[blissful lagoon]

i know what that is but i dnot understand what you are trying to say

[lofty rapids]

you get actor of class

[worn dune]

like that

[lofty rapids]

of the blueprint your trying to destroy

[lofty rapids]

then destroy actor

it's pretty simple

maybe you should watch some tut

on blueprints because i can't explain it any simpler

it's literally two nodes

[radiant coyote]

No bro, its not gonna work

[worn dune]

https://www.youtube.com/watch?v=kmAxj6mFqQg&t=6s (TIMECODE: 2:21) like that open the door

[lofty rapids]

i'll try it, one min

[prime stump]

Okay hold on.. what class have you got this overlap event in? Is it an actor with a box collider that covers that body of water or is this event on your character/pawn class?

[blissful lagoon]

it is box collison bp

[prime stump]

I dont know what that is

[blissful lagoon]

box collider

[prime stump]

Thats not a type of class i dont know what that it

[blissful lagoon]

actor with box collider

[prime stump]

In the top right corner of the class it says Parent Class: XXXX, whats yours say?

[blissful lagoon]

actor

[prime stump]

Okay so its an Actor class that has a box collision component attached to it which you're placing over that body of water to cover it, yeah?

[blissful lagoon]

yes

[prime stump]

If you want to destroy the character and respawn them use the OtherActor output on the overlap and plug that into the destroy actor node

[prime stump]

So do this - #blueprint message - but instead of GetPlayerController, plug in OtherActor from the overlap into DestroyActor instead

[blissful lagoon]

now my respawn logic is not working

[prime stump]

put a print statement on the game mode casts cast failed pin, does it get fired?

[lofty rapids]

your right that hacking won't work very well, your best bet is probably a seperact actor as your camera

so it won't matter your player crouching

atleast thats how i would do it

[vagrant fog]

Hey all - I think I'm working a bit above my skill level and want some clarification/guidance if someone has time

First, my intent:

Use Data Assets for Equipment in my RPG-style game, storing both Male and Female meshes within the singular Data Asset.

Then for how I am trying to do it:

Use a Blueprint Interface to send Data Asset data on "EquipItem" event on my PDA_Equipment_Armor (Primary Data Asset Blueprint) to my PlayerCharacter Blueprint

On my PlayerCharacter Blueprint I retrieve the "EquipItem" data sent to fArmorPartSet and send it through a For Each loop, splitting the Map Value, grabbing each output as a variable.

I use the two enum pulled from the map to split out to one of 5 equipment types and then the individual body parts based on equipment type using Switch nodes. The reasoning behind this is that boots would contain 2 potential meshes (Right/Left), but a ChestArmor would contain 7 individual meshes (Torso/Shoulder&RL/ArmUpperL&R/ElbowAttachmentL&R), so I think this should be having the for each look check for the "Boots" enum value, then move on and find the "LegLeft" & "LegRight" enum values

I then use the Mesh I pulled from the For Each loop to set a specific body part as that Mesh

My biggest "worry" is that the For Each is not going to filter through the enums like I am expecting, and if it doesn't, how would I properly implement this data into a Data Asset to be then sent to my PlayerCharacter when I equip it.

I'm also not entirely sure why I am setting the GamePlayTag from the Key value of my ArmorPartMeshTag Map as a variable in the For Each loop. I would think I could in the future use that to trigger "Set Bonuses" if specific armor pieces are worn together - I just don't think(?) I need it for setting the mesh

I've attached screenshots of my blueprint events and of the boots I am going to be testing, as well as an example of my PlayerCharacter Skeletal Component structure.

(Am I missing anything obvious here? (I'm new to gamedev in general, not to mention just UE5).

I am about to (try to) create an event that I can use to trigger the "EquipItem" event for the boots I have in the example, as I haven't tested my current setup and am just wondering if I'm doing something obviously "wrong" here.

Finally - I know this was a lot, so thank you to anyone who has the time the respond!

[blissful lagoon]

it dosent get fired but my copy is spawned as the same problem

[lofty rapids]

show the code

this is normally really simple thing

[blissful lagoon]

all my code

[lofty rapids]

your respawning twice

onceo n the overlap

once on deconstruct

[blissful lagoon]

i have made 2 trigger 1 is swwimming trigger (over lap one ) event destroyed is called when i enter a different trigger

[prime stump]

You should also really drag off of OtherActor and CastTo the Character or Pawn class and then if its successful DestroyActor, right now OtherActor can be anything of type Actor whereas you only want it to trigger when the thing overlapping your box collider is a Character and not just any actor

[prime stump]

He's right you're calling it twice.. Event Destroyed is a function that already exists in the character class which you're overriding, Event Destroyed will get called when the character is destroyed which you're doing on the overlap and then the overlap is also calling Respawn Game so its called twice

[blissful lagoon]

okky i will try thanks for your help

[hidden oxide]

hey, is there a fix for this issue I'm encountering in making it so you can open a door with a mouse drag in ue5?
https://www.reddit.com/r/unrealengine/comments/1mg2zkl/how_would_i_make_a_system_that_allows_me_to_open/
basically I'm able to open the door from one side but from the other side it reverses my mouse drag and I can't seem to figure out a way to fix it.

someone there responded but I can't seem to figure out what they mean.

[lofty rapids]

whats this comment all about ? is this the solution ? did you try to change it to + and see if it switched working directions ?

probably absolute mousex

[hidden oxide]

changing it to addition switched working directions. There is a comment of what I could do to try and fix it, but I don't quite understand that. The comment is this:

This is tricky. I've done math movement for doors and levers and its always a pain. But one way would be to get the cursor position and the Y size of your screen and do some math with a Map In Range node. You'd get distance from cursor at moment of interaction (mouse click or whatever) and then track its Y movement in relation to the screen Y. Then with the In Range node you can set a distance number that translates relatively to the Z rotation of the door.

Or you could use your character movement instead if mouse if you want to use your forward or backward walk to open the door.

An easier way may be to simulate physics on the door and use a physics handle to swing it open. But these are obviously 2 very different feels depending on what you are going for.

[lofty rapids]

hmm

[lofty rapids]

abs lastMouseX

lastMouseX->abs->plug into minus

does it fk up the movement ?

[hidden oxide]

yeah.

[lofty rapids]

normally what i do for this is if not dragging then set the mouseX

if draggin, mouseX - current

= amount from original

does that make sense ?

you check that when you click set MouseX

then when you drag, you au re using the relative amount

from where you clicked

this is the best way to do this

imo

[hidden oxide]

okay, I'll let you know if it works.

[maiden wadi]

You can't do this correctly with the data that is there. For starts the door needs a starting poiint. Your mouse movement should be compared to where the door hinges are to determine if your mouse movement opens or closes. And it should also handle this itself since you can just keep spinning the door without clamps.

[hidden oxide]

It has clamps and it has the Z rotation (yaw) at which the door is considered closed and a Z rotation variable at which the door is considered open to the max it can be.

[maiden wadi]

But you also need the door's hinge location along with the original door placement. Maybe the static mesh's location could work for the hinge location. Cause you need to determine which side of the door you're on and you have to do that from the door's preopened state. Cause doing it as it's moving from it's current state will cause it to derp out.

[hidden oxide]

sorry, I don't quite understand what you're saying, but the mesh is centered around the vertical middle of the hinge.

[hidden oxide]

okay, I flipped the last mouse x and current mouse x values around in the subtraction and that seems to reverse the working direction too, but didn't help anything. I also tried removing the second subtraction, putting abs after either subtraction operation, and none of those worked either. I think I may be interpreting what you're saying wrong, but idk.

[maiden wadi]

To maybe phrase it better. You need to determine if you're on the inside or the outside of the door. Like say you're in the hallway looking at a door on the right side of the hallway. It swings away from you and to the right if you open it. You want to click on this and drag your mouse right to open it and left to close it. You need to know that you're on the outside of this door to pick these directions. Because likewise if you were on the other side of the door, inside of the room, you would want to move your mouse right to close it and left to open it. So if you know the door's original rotation and placement, you can get a dotproduct of it's forward or right vector to determine what side of the door you're on.

[hidden oxide]

Okay, so I would want to use the "Get Forward Vector" node and plug in the original rotator of the door and use that to determine which side of the door the character is facing?

[maiden wadi]

Not the character's facing so much. You need to dotproduct the original facing's right vector. Say the original facing is from the door's hinges to it's handle. That means if you're inside of the room you're on the door's right side. So you get the direction from the door to the player. You dotproduct this direction with the door's rightvector. This gets you a -1 to 1 value. -1 to 0 means you're on the left side, outside of the door. 0 to 1 means you're on the right side, inside of the door.

[lofty rapids]

this is what i'm saying

not saying it will solve your problem, but just how i usually do this sort of thing with the mouse

where AdjustAmount is the amount to move/rotate object from position when clicked

[hidden oxide]

oh, okay, thanks! I should probably use the scaled by dpi thing as well, so I'll try it out.

[maiden wadi]

To help with my explanation. You need to use the pink arrow direction dot prouct with the player location. Red arrow is the door's original direction. Pink arrow is it's original direction's rightvector. Orange is where it swings.

Your directions and whatnot may be different for your use cases, but the general principal still stands that you need to figure which side of the door you're on to determine what left and right does correctly.

[hidden oxide]

okay, but in your previous comment, what do you mean by "original facing is from the door's hinges to it's handle", like you mean the door is closed or?

[maiden wadi]

The red arrow. If it's hinges are where the pink and red arrow starts. It's facing towards the handle.

[robust lance]

how can i make it so when i load a blueprint, the 3d viewport in that window doesnt have the camera miles away from the center, it seems to focus to fit everything in the window or something

and i have to keep increasing my camera speeds to insane ammounts to get back the center

[maiden wadi]

Double click one of the smaller components. It'll zoom to it for you I think?

Not sure how to not make it open like that though.

[robust lance]

@maiden wadi do you mean in the component tree or the viewport?

in the component tree it does nothing, in the view port i have a sphere scaled to 10000 as a skysphere, so its selecting that

but even when im inside that sphere, it still doesnt zoom in to other components so

[maiden wadi]

There's this at least.

[robust lance]

aha, thank you

was looking for a setting like that

[hidden oxide]

okay, I got something working, but it seems to (because of the direction the door is in) only change when i go sideways to the door, and not when i'm in front of or behind the door.

[distant grotto]

compiled a blueprint with an infinite whiile loop in the construction script lol

and placed an instance of it in the default level

so now i cant open the project

[remote wasp]

Hi, I've noticed a really weird issue with my 2D platformer
I'm using "Launch Character" to bounce on enemies, but the behavior of the launch varies depending on if I play in viewport or in a new window

[hidden oxide]

didn't know Unreal Engine worked well with 2d games.

[lunar sleet]

It works fine, even if it’s not necessarily geared towards them

[lunar sleet]

Source control

[remote wasp]

Nevermind, solved it on my own

[wild sage]

Hey everyone! I’m currently working on the architecture of enemy AI in my Unreal Engine project, and I’d appreciate some advice regarding how best to organize the system.

To clarify, I’m not struggling with how to implement individual features—my main concern is the high number of possible combinations creating a messy explosion of Blueprints, AIControllers, and Behavior Trees.

Here’s the scenario:

Enemies have two main behavior categories:

1. Origin (defines enemy initial and general behavior)

• Spawner: Patrol, aggro/reset logic

• Totem: Spawn/despawn based on player actions

• Triggered: Idle until activated by an external event

• Chaser: Initially pursues a specific NPC, switches to player if attacked

• Neutral: Idle until attacked by player

2. Combat (defines enemy attack behavior)

• Melee: Circles around the player (strafing) and attacks up-close

• Ranged: Keeps distance, finds strategic positions, and shoots at the player

Additionally, certain weapons grant special skills (like blocking & counter-attacking for shielded enemies, or melee strikes and evasions for ranged enemies carrying rifles). These skills slightly modify behavior but don’t fundamentally change the melee/ranged behavior trees.

AI perception is handled by AIPerception component, and I want it to be cleanly integrated into whatever architecture I use.

My question is: how would you structure such a system in Unreal to minimize Blueprint, Behavior Tree, and AIController explosion?

• Would you suggest a single flexible AIController or multiple specialized controllers?

• How would you approach integrating small behavior differences (like weapon-based special skills) without creating dozens of slight variations of Behavior Trees?

[lunar sleet]

Move your post to #gameplay-ai there’s some people there that would prly be willing to tackle all that

[open furnace]

Hey guys 👋

If you're working with structs in Blueprints, my friend released this free utility:

https://www.fab.com/listings/18e36a64-d5c7-487c-a0be-2438bc7e92ac

Project-wide features:
Refresh structs (Unreal can get cranky when struct properties change)
Hide unused pins
Find unused properties
Find references

❤️ ❤️ ❤️

[hallow nest]

Hey Guys, can someone send me to some tutorial or docs for changing IMC while possessing different pawns ?

[dusky cobalt]

I'm working on something similiar and I made the 'end-actions' to be modules that are very individual. Then I just active module that I need, when I need. Current activated module is just handled by component. Component has ActivateModule (just examples but it can be anything BeAggressive (looks for target on whole map, and goes to it OR other module SearchTarget, goes to location and pulses in radius until finds target on target found -> activate module (X) which let's you make so many combinations.
For the types of attack I basically have something similiar but here it's: doesn't matter if it's ranged or melee for the first part because it will just try to go to the Range, what matters is what he does when he reaches, so melee would just AttackMelee (module) or AttackRange(module) which would spawn projectile and projectile then handles itself (it has target).

On top of that you can have some more inteligent behavior that tells it to move here, back off etc. with behavior trees.

[dusky cobalt]

Just deactivate previous context and add new one. When adding new one set it as Current (so then you can remove current, add new and set it as new).

[hallow nest]

😊 thank you so much, I will try this out

[hallow nest]

small question, your ''current commander context'' is a variable reference ?

[dusky cobalt]

It's a Input Context Mapping and I set it after I add context that I want to be current I can remove it before adding new one (so it works like a switch).

[spark steppe]

@hallow nest implent the removal of pawn dependent IMCs in the Unpossessed event of the pawn

that keeps your BP clean and predictable

same for @dusky cobalt

[little helm]

Is there any way during gameplay to detect whether the input is coming from keyboard , mouse or gamepad ?

[oak pine]

My speed value isn’t changing.

[frosty heron]

and it's not plugged in either

[maiden wadi]

CommonUI switches an Enum based on the last input pressed. But it assumes KB/Mouse are the same. It's three states are KB/Mouse, Gamepad, Touch

[sick sky]

i want to use the data layer system but this requires to enable world partition, but i dont want to use the cell streaming method, is there a way to tell WP to alwasy load the full level/not generate/use cells ?

[astral mist]

It won't because there's nothing to execute here. You must start execution from an event be it Begin Play or whatever is used by this type of blueprint class.

Execution runs from left to right and you can see the flow if you're debugging the object. I suggest you watch the course "your first hour in unreal 5" and take it from there.

In order for the float variable "Speed" to be set these conditions must be met: exeuction must flow to the Cast node. The cast node must succeed and flow to the Set node.

[austere vapor]

Quick question about timers. Working on a puzzle game and I want a timer that's accurate down to Milliseconds. I currently have an integer incrementing based off a "Set Timer by Function" timer but I worry that there's no guarantee it fires or will fire as often as needed. How accurate and reliable are the SetTimerBy nodes? Can they fire off every Ms without worry?

[maiden wadi]

No, because that's not how timers or even the game engine works. Timers are evaluated every frame. Every frame depends on a lot of factors like other code running and hardware.

So say you have a timer for 1s. You have a framerate of 59.5 frames per second. This means that there are 16.806722 ms each frame or so. TLDR in a 60s time span your timer won't run at 60s. It'll run the next frame because that is when it will have passed it's time needed.

[austere vapor]

I thought timers were frame independent? I know not to tie any time functions to Tick for that reason. It seems to keep pace with my phone when I tab out and the editor runs at 5 fps.

What im gathering is that while the timer "updates" at the right rate, nothing can happen between those updates. IE if I have a time limit of 10 minutes, a timer at 9:59:600 might not update and time you out until 10:00:200 due to frame times, even if the timer is accurate to real world time.

[little helm]

I know but does it works well in shipping build?
Epic put caution ⚠ on that.

[maiden wadi]

The timer manager runs on tick just like everything else which is where it internally evaluates. Can I ask why you need such precision? I'm wondering if there's a different way to handle your needs?

[maiden wadi]

What engine version are you on?

[maiden wadi]

I have no idea why it's still marked Beta. Specially since it's versioned at 1.0. I think someone derped. But I can say that it's used in Fortnite. There are a few other games it's used in. We used an alpha version of it in Red Solstice 2 that we had to apply some minor fixes to but this was in 4.27. And we're using the newer fixed version of it in Atre: Dominance Wars at the moment without issues which is currently 5.5 I think.

[astral mist]

Beware of letting idealism reign supreme over your game design decisions. Given tactile stimulus has an average response time of almost 200ms this simply seems ridiculous however you look at it. As per wide spans of time this also becomes highly irrelevant. Just a thought. Games aren't real nor literal -- It's all an illusion to pass the time. If you wanted to implement a competitive mode with true time this would not be the way to do it.

I would first focus on making a fun and engaging game that other people would want to play.

[maiden wadi]

In all fairness. Timing is a pretty critical component of game design. And it's not overbearing to assume you want times down to the milliseconds even without competitive play. There's nothing wrong with factoring this level of detail into your designs early on. Specially in cases like a crafting system or similar where you have things queued right after each other. You shouldn't craft slower just because your timers end up offset to your slower framerate more than someone else. And these things are very easy to compensate for. Rather than relying on the timers for the precision, you queue your items with timestamps of when they're started/how long they take. Then you register a timer to callback when it should finish. Your item may not craft precisely at that time, but queueing ten items will end up with ten crafts at roughly the same time, because they're based on timestamps instead of timer callbacks.

And that kind of thinking is critical to game design. Because it's not just about the timeframes here. If you have a crafting system that manages one timer for the closest item to be done, you save a lot on performance by not registering possibly thousands of timers for every individual thing. You get one timer to run at the closest craft to being done. You evaluate if anything else should finish that frame and then start the timer back up for the next closest craft to being done.

[astral mist]

I seem to have triggered your fight or flight response over a cautionary tale. Here's the problem, you don't have the context and neither do I but I can assume he's prematurely "optimizing" just as you can assume he's right or wrong.

Perhaps an actual atomic clock should be issued as part of every motherboard from now on.

Because apparently measuring deltas won't cut it.

I would try to make a point by staying within topic. We can all pose different scenarios to justify why we spend so much time behind the keyboard to justify our pay but that's not relevant to the aforementioned cautionary tale.

[quartz pawn]

Howdy, I'm having a very odd problem here. I have two interactables all childs of a parent interactable class. The one interactable is a sphere and properly triggers the ActorBeginOverlap function when someone overlaps the actor. The other interactable is a cylinder and will not trigger the ActorBeginOverlap no matter what. Both actors are set to OverlapAllDynamic. Anyone got any thoughts as to why this is happening?

[astral mist]

As per optimization (thousands of timers sounds like a terrible design) I'm all for it but that's also a separate discussion.

[austere vapor]

Im working on a competitive puzzle game inspired by Tetris. idk if youve ever seen the Tetr.io leagues but it gets pretty intense, and there are other speed-based modes like Sprints. Races like these really get down to Ms timing.
I saw some places say something about global time and taking the delta between when the game started and ended but I'm not sure if that is what I want either

[astral mist]

Wouldn't work on blueprint based timing for anything competitive to begin with.

[austere vapor]

damn u right

[little helm]

5.4

[astral mist]

Deltas may work. But reconsider your options. How precise are you willing to go?.

Also @maiden wadi all of your points are correct but the tale was just that. Not meant to start a personal argument just a side conversation.

[astral mist]

As long as you are aware that competitive means the player can't have any say in terms of timing and you are willing to decouple this from their client...

We may reach a "cheating" discussion as well.

[maiden wadi]

Lol, just becuase someone doesn't agree with you fully doesn't mean you triggered their fight or flight response. It isn't about getting perfect precision. It's about making sure that 1000 crafts take about the same time for someone running at 30fps and someone running at 1000fps. You can see this in some games where things craft nearly instantly but you can queue them. If you lower your framerate each craft follows your framerate. Other games such as Space Engineers you can see dozens of items craft per frame. And these small things add up quick.

[astral mist]

It's one of those cases when someone mentions a rock and instead of avoiding it you decide to faceplant it.

I don't know where the crafts came from. This is a puzzle game?.

I agreed thousands of timers for a crafting system sounds like a terrible design.

[maiden wadi]

You should be fine. Though I would stay away from the Action Domains. I recall they had a bug in recent versions where they weren't applying input modes correctly. But they're not really necessary.

[olive yarrow]

I finally got an error free projectile pool working. buuuut now im in the issue where my projectiles are just.. wonky. the collisions are wildly inconsistent - and u yeah

[austere vapor]

Its a puzzle game akin to tetris yes, and i dont plan on this taking the main stage for any competetive events. Its mostly a sandbox experience where people can design and share challenges or create their own puzzles

[little helm]

Thanks will look into that

[astral mist]

If we gather a bit more context perhaps we could give out our ideas and help uwuziel.

[astral mist]

It's just that if we understand the premise. Both players will be online or offline? Same machine? If they're playing on the same system then they both suffer the same timing innacuracies.

"online" would bring other issues to the table.

[austere vapor]

It would be mostly single player play, although i had hopes to allow players to connect and share a lobby so they can play or train together.

right now the timer logic is in the board, so each board keeps track of its own timer. All local.

[astral mist]

This introduces plenty of issues of course.

You would require a server to keep track of time, events. etc. that isn't tied to any of the clients for a proper competitive scenario to work. And you'd have to consider certain basic anti-cheating measures as well.

If this isn't worth it then perhaps lower your requirements for the time being.

[austere vapor]

Thats way beyond the scope of what I want

Im activley looking for something smaller. Its competitive but not like. Global leaderboards type competitive

Its like. 2 hour grind with a friend at 11pm type competitive

[astral mist]

Authaer would probably agree on being efficient. Despite our feather ruffling. There's of course the concept of properly designing a system as to avoid refactoring in the future but you also have to consider the cost/benefit of doing this and whether going all-out on something that may become an issue or not is worth it for you.

You could expose the performance timers from Windows (or the equivalent for your platform) and work with them instead. You obviously still have a main loop that won't be running at the speed of real time.

[austere vapor]

That sounds like it would be platform dependent

[quartz pawn]

Can someone please assist with this problem. I'm stumped and not sure why two identical blueprints are having these collision issues.

[maiden wadi]

Watching some of these tetr.io things. One thing I can say is that the simplicity of the game negates some of the performance issues. It's such a simple game that keeping frametimes insanely high would be easy. But for anything multiplayer I'd wonder about a lockstep input system.

[astral mist]

Wouldn't this also mean $$$ would give you an advantage?

[austere vapor]

the og actually looked up Tetrio
my guy 🐿️

[olive yarrow]

oh wait the collision works when an enemy ai uses the bullet but not me... checks out

[austere vapor]

whats lockstep btw?

[maiden wadi]

Partially. But the same is true for any competitive game such as Fortnite/Apex Legends, etc.

[astral mist]

Up to a point yes

Visually also. Not the case but it can give you an advantage for sure to have the best gaming setup.

[austere vapor]

well when the game looks like this in dont think graphics advantage is a thing
(Tetr.io, not my game)

[astral mist]

That's why I mention this isn't the case where a high refresh screen would help

For a puzzle game I may want to lock the framerate for the main loop.

Just consider that people will inevitably cheat.

[austere vapor]

I dont care about people cheating. Theres no matchmaking. or rank system. Its invite only lobbies meant for friends.

[astral mist]

I mean in C++ just using the class FPlatformTime will expose you to the best timing available by the platform.

But of course we're talking BP here...

[austere vapor]

I know theres ways you can combine C++ and BP

[maiden wadi]

I can't say much beyond that it's basically a system where you pass the inputs rather than active states. But I've never implemented, or seen one implemented. But they're recommended a lot for timing critical and complex games like RTS games. I think Starcraft2 ran a deterministic lockstep. I think Factorio may as well.

[astral mist]

Just keep in mind tick is frame by frame.

[austere vapor]

I'll take a look into it. Seems Epic has some documentation on bLockStepMode

[astral mist]

You are basically synchronizing the inputs and the results happen organically because each simulation / game is highly deterministic. You can have comparisons in-between states for safety sake though.

It would be the ideal method in this case. You have a deterministic outcome.

[oak pine]

Thanks. I haven’t really learned Blueprints since I use C++, but a lot of people say I should use them for animations. 😅

[astral mist]

Any context where they can help save time would be a good use of blueprints. IMO Specially for highly visual outcomes / art dependent assets. But this is also a huge debating topic...

Are there not 3 types of UE devs? the c++ diehards that won't touch blueprints with a laser. The BP-only guys and then the realistic "everything has a place and a reason to be" guys.

[spark steppe]

you shouldn't jump straight to C++ when starting Unreal

[astral mist]

They complement each other. Everything has a purpose and extremes are never a good idea :p

I would agree to start with BPs.

[oak pine]

yeah ig😅

[spark steppe]

https://landelare.github.io/2023/01/07/cpp-speedrun.html#language-choice

[astral mist]

Then slowly implement your own custom classes exposing bp nodes in cases where speed is required or the functionality isn't natively available.

[oak pine]

I actually started learning C++ before using Unreal, and I just feel more comfortable using C++ instead of Blueprints

[astral mist]

You can obviously make entire games in BP and there's nothing wrong with it. But once you detect a performance issue you should consider C++ (yes you can write bad c++ code also, that's a thing)

[astral mist]

Just give them a chance. They are best buddies.

[spark steppe]

also i prototype pretty much everything in BP before moving it to C++

it just allows faster iteration

[astral mist]

I find that's also the case but it comes with experience. There's a learning curve obviously

[spark steppe]

and it's annoying to restart the editor just because you forgot to add a struct member

[astral mist]

You didn't forget. Someone changed the design. 😏

[oak pine]

yeahh and live coding sucks

[astral mist]

With time you'll know certain things are obviously not going to perform well in BP but if you are just starting out I feel it may be important to learn the ropes first and BPs are just an intricate part of UE

Consider a very simple car physics simulation where most of the code runs on tick. Yes c++ makes complete sense (specially for the math) but for a quick prototype and also considering the game may just simulate one single car perhaps BPs would be enough if you know what you're doing. Then we can discuss whether that's efficient or not but it depends on how complex the simulation would be.

[meager spade]

The thing I probably hate the most about BP is when you run into a problem that would be solved by a function that for no reason isn't BlueprintCallable so you have to make one in a library yourself

[astral mist]

Personally I despise poorly written code that is resource wasteful in general terms but sandboxing is an exception.

[astral mist]

But at least we can make it heh

[spark steppe]

now imagine an engine like Unity where you have to work with a blackbox

[astral mist]

No thanks.

If you've used it you would also know their naming convention has changed a lot over time

And they are not consistent.

Deprecation is more of a guess at this point with them.

But this is offtopic. I just think the diehard fanboys are too invested to realize or admit their beloved engine has placed them inside a toxic relationship.

For studios that have already invested time/money into it and they have a proper workflow going it's not as bad but I feel they're just using it as a "thin client" at this point and not a full blown solution because they have to manage most of the code themselves now given it is a blackbox and anything that isn't standard must be implemented (by purchasing a plugin or writing it yourself).

[maiden wadi]

They must make a decent amount off of their enterprise stuff given that they won't opensource it like Unreal has. Personally I would love Unity's C# workflow. Been considering looking into U# or Angelscript, but ugh. I hate being locked into engine versions. Would never touch Unity though. Company itself is unstable given it's history.

[vagrant fog]

If anyone has some time, could they help me with a question about my equipment system/logic?

I placed two blueprints (children of my BP_EquipmentArmor) in my test world.

They are able to pull their respective static meshes and set it from the data asset I assigned to them in the parent construction script (so I know the blueprints are able to access the Data Assets storing the item data)

Then I'm trying to do a simple "run into item -> equip item" setup by getting a map of the GamePlayTag:SkeletalMesh from the assigned data asset, send that through a blueprint interface to be received by my PlayerCharacter blueprint and set the mesh(es) based on the map.

I've attached screenshots of everything relevant, but if I'm missing something please let me know.

Right now I see the PrintString of the item name when I run into it. I added another PrintString (not shown) after the bIsMale check on my Player Character blueprint, but that does not trigger when I run into the item (and the meshes aren't set).

[maiden wadi]

I'm confused by your code around the interface? One is the implemented event which looks like it's on the character, where the IsMale property is? If that's so. Why are you calling the interface function with Self as a target on the overlapped thing?

[vagrant fog]

so the screenshot of code showing is male is on the bp_playercharacter. isMale is set by selecting player gender (bound to keyboard event for testing - shown in screenshot attached)

The idea is that it checks the player gender, then splits off for setting male/female meshes.

My "BPI_SetMesh" blueprint interface just has a function that has the ArmorPartMeshTagMap set as the input.

The idea there was that when an item is being equipped, the mesh information is pulled from the data asset, sent through the interface, and received by my playercharacter, then assigned to the correct component based on the gameplay tag in the map key

[maiden wadi]

Right. So that is likely your issue. This is in the overlapped actor in the world. And it's calling that interface function on itself, not the character. Chances are you're looking to pass the OtherActor as the Target of the Interface function here.

[vagrant fog]

I understand some of those words.

But I am a bit confused. I had thought it was "When my player overlaps with this item, the item would send it's data through the interface, to my player"

So why would it not be self referencing if it's the blueprint that holds the data containing the skeletal meshes? (I am new to software/game dev stuff, so I'm still trying to understand how things work)

Edit: It's probably me misunderstanding the interfaces, but, I thought the point of the interface was for it to be agnostic of who is "listening". Meaning, my item is calling out "fArmorPartSlot", then on my player blueprint I am listening for "fArmorPartSlot". When the playercharacter receives a "fArmorPartSlot" event, it takes the data sent with the event and processes it on the playercharacter blueprint

[abstract pine]

help.. I set simulate physic on my AI npc character when being shot at by don't want to to fall under the floor. How can I do it ?

which setting should I pick

[maiden wadi]

Realistically, I would avoid using interfaces until you actually need them and understand what they're for. Youtube/Schools like to throw them around a lot as a miracle and generally don't ever explain why... or actually use them correctly most of the time.

An interface function is simply a function with no logic that can be implemented in any class. Lets say you have an interface function named Damage. In your Character and in ZeldoPot which have no base class you implement this function separately in both of them. In the character function you apply damage to the player's health. In the ZeldaPot you simply shatter it's static mesh and maybe spawn a rupee. You need to call the same function Damage here, but you don't want to care what you call it on, and these things need to handle this differently.

You here have some data on Pickupable. Pickupable needs to tell Character what it should equip. Right now your Pickupable is telling itself to equip the item, cause you're calling the interface function on Self, Self is the Pickupable. You need to tell the character what to equip instead, which will be the OtherActor from the OnOverlap event.

[maiden wadi]

Before calling SimulatePhysics, set it's collision preset to Ragdoll, I think. That should fix your issue.

[valid elbow]

Peeps, I have no idea where to ask this. But I have such an strange bug.... Been scratching my head for a day now...

1. I have a BP_Music in my level. That just does this (screen 1), play from a audio component.
2. The audio file looks like this (screen 2)
3. Then I have another Actor in the level also with another audio component. And if I use this node (screen 3), it will start a different song from BP_Music.

How is this possible. Where do I start looking? And to make matters worse... It only happens in a build, not in editor?!
Yes, I rebuild everything from c++, yes I removed the cached, interim folders, etc and let Unreal recompile all. Yes when I disconnect the Play from S Ballspin it doesnt do it in the build.

[vagrant fog]

Ok - so I feel like I understand the "why" part of the interfaces - e.g, you want a special thing to happen, such as "OnBurn", but you want different objects to interpret what that means on their own. Meaning, a rock might melt to magma, a tree might burn down, or a puddle might turn to steam depending on the logic built into the thing when receiving the "OnBurn" message.

In my case, I want to use the interface for equipping weapons/armors to my player character, which would ideally facilitate the transfer of all meshes/stat bonuses/etc... stored in the Data Asset on the item's blueprint to the relevant blueprint(s).

So on my "BP_Equipment_Armor", my understanding is that I am taking the Data Asset, extracting the map I've pre-defined, and sending that map to the "fArmorPartSet" event that exists on my "BP_3rdPersonPC".

But you're telling me that with my current code I'm telling the "BP_Equipment_Armor" to run the event? I thought I was just sending the information through the interface so that the event defined in my "BP_3rdPersonPC" could be executed.

How do I instead just send the information from my Equipment Blueprint to my 3rdPersonPC blueprint like I'm intending? You said it should be the "OtherActor" from the EventBeginOverlap, but I can't connect those pins - the blueprint doesn't let me

[maiden wadi]

Ah, I only glanced at that. You need the other interface call type, the "Message". It has a little envelope on it. Should let you set anything as the target.

[vagrant fog]

Would it be this one?

Ooooh. I think I understand. I was calling the fArmorPartSet, but I was calling it on the BP_Equipment_Armor, (as shown in the "title bar subtitle" of the node.) Is that right?

[maiden wadi]

That one will work, it'll let you cast the otheractor to your character class and use it. But that isn't the generic interface call.

EG ig this is my interface function.

You'd see this on search.

[storm obsidian]

Is there a any way to make copy of component? I mean copy, that after coping is absolutely not related to original component.

[empty anvil]

Hey, not sure if this is the right place to ask but worth a try. I'm having a super strange issue where upon adding a begin play node to a specific blueprint and attempting to compile it crashes the whole engine and gives me this error code:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000200000038

UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Kismet
UnrealEditor_Kismet
UnrealEditor_UnrealEd
UnrealEditor_Kismet
UnrealEditor_Kismet
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

I've already tried rebuilding from source and literally deleting and remaking the whole blueprint component and yet it still causes issues, seemingly every other blueprint is fine.

[maiden wadi]

Need symbols installed if you're using a launcher engine. Need a better callstack here.

[empty anvil]

Will do, I'll install and try to get it to crash again.

[austere orchid]

Can you be more specific? What are you trying to mod in?

[desert flint]

how can i make it, so when my hand hits a object, it just stays put and stays attached to the object/floor

[empty anvil]

Ok so I'm cautiously optimistic that I fixed it, literally just had to validate assets and dependencies, then reload the asset and it seems to be much more stable now. I'll send the crash logs with symbols if it happens again.

[vagrant fog]

Okay - you've helped me an absolute ton. The message is now being sent properly from the item to my BP_3rdPersonPC's fArmorPartSet function graph.

After some tweaking (and re-adding a BodyPart enum & a IsMaleArmor boolean to my map...) I am now successfully equipping my boots - and shirts for both genders - I believe it's properly selecting between male & female options, but these meshes are very similar for the two genders lol

Thanks a ton! I'm sure I'll be back to ask questions about other misunderstandings in the future

Edit: Confirmed after unchecking my "IsMaleArmor" boolean on the male mesh, he no longer equips the torso item. So this has been a huge success that should be the foundation for every item going forward.

Now just to figure out skin color changes & reverting back to the player-saved default mesh (with color)

[maiden wadi]

Nice. Hopefully it's fixed. 😄 But yeah symbols will help a lot with any further crashes cause you get a nicer callstack with actual function names, and the actual causing line of the crash.

[maiden wadi]

Really nice. 😄 I will at least say that when I did an equip system I made it a lot more modular and data driven where the visuals were an after affect. It was essentially... Here's a list of things you have equipped. Validate them to make sure they don't cancel each other out and that they can be equipped. Then apply their stats. Then figure out which ones to visually apply to the character with whatever overrides and such.

[vagrant fog]

Ideally this system should be fully modular - in that I have my primary parent equipment blueprint that controls all other equipment types via child blueprints that I assign data assets to.

The Data Asset is what actually contains the data - I just needed a way to get the skeletal mesh information from the data asset to my player character's body, which I was struggling with.

I believe I should be able to add the rest of my item data (e.g., armor/stat bonuses/level requirements/etc...) by just updating the Primary Data Asset with new variables that I then define on the "child" Data Assets. Then I'd use a similar interface function to get those values from the data assets over to my player character blueprint (or wherever I'm storing the player's current stats/status effects/etc..).

But in theory I should now be able to just create all of my items in my data assets and if I have an "Equip Event", it would send their meshes to my player character to be displayed - whether that's a cape, a pair of boots or gloves, or whatever - based on the Switch on E_BodyParts, which I have assigned to each mesh in the map on my data asset.

---

Though I'm sure I'll come across some limitation or something doesn't work how I think it should work and I'll be back asking for advice lol.

I know I will still need to work on some type of validation. My original plan was having an enum assigned in the map in the data asset as well dictating the body part that the armor goes on (e.g., Helmet/ChestArmor/LegArmor/Boots/Gloves/Cape) and then defining that only 1 item from each category could be equipped and if a different item was found to be equipped to remove the effects from the data asset (stats/status effects/visuals).

I'm not entirely sure how all of that will work, but, one step at a time.... Anyways - thanks again, it feels like it's been days since I've made anything that amounts to progress lol

[desert flint]

How do I pull the weight of an object/mesh in my physics handle?

[vagrant fog]

I was thinking gameplay tags could be used for some kind of validation in that regard, as the map in my data asset is a GamePlayTag:SkeletalMesh/Enum/bisMaleArmor

So in theory I could just check to see if the character has gameplay tags assigned, since all equipment will have unique assigned gameplay tags.

I might need to re-organize them though so that I can check for something like "Does player have Gameplay Tag "Equipment.Armor.Boots" (since the gameplay tag I plan on using should be something like Equipment.Armor.Boots.Leather.Tier#.LegLeft.Male, which is a sub-tag of Equipment.Armor.Boots)

So if I understand what I read/watched on Gameplay Tags correctly, I should be able to validate current equipment against whether the player has any of the "Equipment.Armor.Type" to determine if something is equipped when swapping gear, as well as determining exactly what is equipped at any time since all of the variables of the armor/weapon would be inside of the Gameplay Tag assigned to the equipment.

[inland walrus]

Anyone know why these 2 print strings are basically printing different values when they are the same?

[lofty rapids]

i don't see right off the bat why, but you saying it should be 1 1 0 ?

[tidal ridge]

hey quick question what is the difference between character states and stats?

[inland walrus]

Length is working properly, it's the items, for some reason it's not clearing them. I check the length, the length says it has nothing but then the item says it has something

[maiden wadi]

A stat is a state.

[lofty rapids]

but you don't have theh item in the slot ?

[inland walrus]

It's weird because sometimes it works and sometimes it doesnt, but the print item never works

[maiden wadi]

Length is not the same thing as the value at the index.

[desert flint]

How do I get the weight of an object/mesh in my physics handle?

[lofty rapids]

i mean can't you just use mass ?

i think mass is weight

[inland walrus]

I know but I'm clearing the slot if its less than 0

[desert flint]

yes, but how do i connec tthat to whatever im grabbing

im using a physics handle

nvm, figured it out

also i have a question

[desert flint]

do you know how to do this?

[inland walrus]

I've done a set to empty it which is working, but the length is still 1 after it's emptied, I tried clear & remove and that doesnt work either

[maiden wadi]

Need more overview of the prints in relation to this code removing things.

[inland walrus]

https://blueprintue.com/blueprint/b7tqriu8/
Sure, I've put it here as it's too big for screenshots

[lofty rapids]

so 1 it shows one, and one it shows 0 ?

but they are both empty ?

[lofty rapids]

when you set it, don't plug anything in

just set it to empty

[inland walrus]

It doesnt let me not plug anything in

[tidal ridge]

oh i thought there both different like stats are attacking or death, and state is health and stamina sort of thing?

[lofty rapids]

and you tried clear ?

[inland walrus]

Yeah, if I clear, it doesnt actually clear, it still thinks there is an item there. Clear fixes the length back to 0 but then still says there is an item.

Images are my print event

Glowshroom shouldn't be there, it should be Nettle x3, x0, x0

[maiden wadi]

Stats are state. Stats are health, mana, strength, stamina, shields. These are state. They are stateful values.

But so are tags or similar that note things like what you mentioned with attacking, dead, unconscious, falling, etc. These are also state.

Both are the state of an object. Stats are just more specifically usually related to attributes.

[lofty rapids]

are you clearing the same map, is this all in the samee blueprint ?

do you have more then one slot set of variables ?

this is weird that it says zero length

and therers an item in it

[inland walrus]

https://blueprintue.com/blueprint/880gpb7j/

This is my full logic, the only place I do anything else to do with the Slots Map variables, is when pressing + or -. But the event we're using here, locks the + and - buttons then runs the combine event we're using, so it cant be them

[lofty rapids]

also try a restart

[inland walrus]

Tried that too 😅

[lofty rapids]

put a break point and some watch values

what does that say ?

[inland walrus]

It is running through the right bit

[granite nacelle]

Hello, I need some help with an inventory system seems like the item keeps getting destroyed when I close the inventory window or I click on it twice I get this error but validating it doesn't help : Blueprint Runtime Error: "Attempted to access BP_BasementKey_C_2 via property Item, but BP_BasementKey_C_2 is not valid (pending kill or garbage)". Node: Open Item from Inventory Graph: EventGraph Function: Execute Ubergraph WB Inventory Slots Blueprint: WB_InventorySlots

[inland walrus]

zoomed in a bit so you can see it better

[lofty rapids]

check keys, length instead

i wonder why they don't match up

thats really odd

it says 0, but shows an item

something with get value by index

[granite nacelle]

It keeps bringing me here

[frosty heron]

It probably collides with the player character.

If you want to forcefully spawn the actor despite colliding with something, you need to change the spawn handling.

In the spawn actor node where it says spawn handling override, click and chose something like always spawn ignore collision.

[granite nacelle]

Sorry if I didn't explain myself well enough, but this is a part of my inventory system, so I've been getting this error message, so I placed some print strings and saw that it's been destroying itself when I close the inventory or click on it twice. I find that my destroy component might be the cause for it because if I remove it, I don't get that issue, but I'm only using it so I can keep track of the items and if they've been destroyed or not in my save system, so that's the main issue.

[granite nacelle]

Here's a small vid of it

[frosty heron]

@granite nacelle i can only reiterate

Read again what ive said

Its pending kill / destriyed because i believed the actor you spawn collide with the character.

Try to change the spawn rule like stated.

[granite nacelle]

I did though

[inland walrus]

Sorry slow reply, I'm in bath and my partner is trying to do it

The slot02 = is correct but it's still printing glowshroom when it should be x0

[lofty rapids]

hmm so that says the right thing, it's a bit confusing tbh, something with the get value by index most likely

[lofty rapids]

so does it only not work on slot2 ? or do all the slots not work like this ?

[frosty heron]

Your widget shoudlny do any logic like this or cache the item.

Widget job is just to read. Relay this function to your inventory system.

OnClick -> get MyInventory -> spawn item

[inland walrus]

Same issue with all the slots, slot02 is just the easiest one to test on

[granite nacelle]

yeah it was from an old tutorial, the widget button only spawns the item for the player to inspect it, it was working fine a while back but I dont know what happened

[frosty heron]

I would reactor it by keeping the reference and spawn function in your inventory system.

Like you want the function to still work regardless if your widget exist or not.

2 way dependency is either questionable or bad. In the case of UI its almost bad everytime.

[lofty rapids]

since length is zero i wouldn't worry about it, but it very strange, if keys length is zero as well then i would have to guess it's the get value by index node thats just returning the last value

[inland walrus]

So strange, but I'll take your word for it lol and not worry about it

[lofty rapids]

if length is zero, just test the code out and see if it works, check if length is zero before you use that node

if length is zero, don't even use it, but someone might know why that happens, but it's really strange to me

[inland walrus]

got you haha thanks man

[lofty rapids]

"Unreal Engine Blueprints (under the hood in C++) don’t invalidate the return variable from Get (by Index) if the index is out of bounds — they just return the default-constructed value for that type. And Blueprint variables (pins) tend to “hold” the last value shown unless overwritten, which can be misleading."

this is what chatgpt says about it
"Get Key/Value by Index can return the last accessed value if the map is empty — because the returned value is not automatically invalidated or cleared."

[granite nacelle]

inventory was difficult enough but thanks.

[next hollow]

I loved learning about this, cuz the same happens if you never call the return node on a function. 😛

[inland walrus]

ah sweet, thanks man so it truly doesnt matter haha

[lofty rapids]

i think because your accessing index out of bounds it just returns fkd up

basically there is no zero, your getting zero

which is a no go, normally you check the length first

[inland walrus]

So it just gets the last used value

[lofty rapids]

thats what the ai is saying, idk how true that is, but it seems to be the case

it doesn't make sense any other way imo

but i could be missing something, i just don't see it

[inland walrus]

I agree, that's relieving, I've been trying to fix it for hours lol

I can rest easy

[cyan wren]

How can i take the impulse applied by this weapon and apply it to the ragdoll that i spawn

Unsure how id even really store the value even

Im newer to unreal, forgive me

[cyan wren]

it applies adds impulse to meshes and everything but the biped is unaffected due to its physics, i can shoot the ragdoll and it moves however

[lofty rapids]

You want to add impulse when he gets hit and you turn it to ragdoll ?

[cyan wren]

i want to carry the impulse from the gun over and apply it to the ragdoll

the line trace from the gun applies an impulse but idk how id get the spawned ragdoll to be affected

[worn dove]

Something weird is happening with my ListView. Whenever I make a change to the object reference for Event OnListObjectItemSet, it doesn't change. Is it returning a copy of the data instead of a reference?

[graceful sage]

Have you tried checking velocity change

[frosty heron]

Object reference is an address. If you get a copy, you will get a copy of the ptr. The object pointed by the ptr will be the same instance, not copies.

[worn dove]

That's what I was thinking, but modifying any variable in the data doesn't work. If I store a reference to the WBP containing the ListView in the data, and access that reference in the data in ListView item WBP, none of my changes to it get applied to the real WBP.

[cyan wren]

it applies velocity fine to all other objects, everythings working relatively as intended, i just cant figure out how to apply the velocity of that final shot to the ragdoll

[graceful sage]

Maybe I'm not understanding all what's going on the hit trace object is the character correct?

[cyan wren]

The screenshot is of my weapon bp, when the trigger is pulled it makes a line trace from the camera and applies damage and an impulse to the hit objects

It can push boxes around and everything, the issue is however i dont want the enemies to be under impulse by the guns, though this makes it hard to save the impulse of that final shot and apply it the ragdoll mesh that is spawned

[graceful sage]

Why you spawning a ragdoll mesh

[cyan wren]

I want the enemy to be ragdoll when they die?

[graceful sage]

You could check the health to decide whether to apply impulse

Couldn't just set physics enabled when they die?

[cyan wren]

Shit yea my bad, that is what i did, sorry its been a while since i touched this script

[cyan wren]

My issue is how would i save the impulse applied to them? How would i get it to communicate

Idk, sorry i couldve asked this better

[graceful sage]

Probably use an interface to send to the hit actor

[graceful sage]

You're wanting to send the amount that's plugged into the apply impulse to the hit actor?

[cyan wren]

sort of yea, i want the impulse that is applied to him while he has physics disabled to transfer to him after his physics is enabled

all of the impulse i apply is nullified by the fact he has no physics at the moment

[graceful sage]

Yeah could create a variable to just add to and apply for the final blow i assume

[cyan wren]

would i need to cast for that? im fairly new

[graceful sage]

You could but I would look into blueprint interfaces and how they work

[cyan wren]

alrighty, gracias

[graceful sage]

But you could simply add to a vector and then if dead if health is 0 apply impulse instead of what you have now

I assume

Instead of applying impulse on the trace event do it on branch check on ontakedamage

[cyan wren]

yea, i was mostly struggling with the extrapolation of that applied impulse, i didnt know if i could grab that from within my biped or if i had to port it over from my weapon

[uneven sundial]

Hi,

I'm experiencing an issue in Unreal Engine 5.6 related to UMG widgets. When I add components like TextBlock or Image in the Designer and check "Is Variable", they work correctly in the Graph, but I cannot enable options like "Instance Editable", "Expose on Spawn", or "Expose to Cinematics" in the details panel.

However, if I manually create a variable in the Blueprint (such as FText, Texture2D, Integer, etc.), those options appear as expected.

As far as I understand, visual widgets (like TextBlock) might not support those flags by design, but I’d like to confirm:
→ Is this a limitation of the engine, a UI bug, or is there a recommended way to expose such variables to instance editing without breaking their layout bindings?

If there's any official or recommended workaround, I’d really appreciate it.

Thanks in advance!

[next hollow]

I don't even wanna start to wonder how cursed that'd get, if you could expose on spawn, or edit there value. 😛
That is by design, because there direct like refs to the widget elements, not some generic just variable.

[little helm]

How to auto detect the user's default language in OS and change in that language in the game for the first time ?

[little helm]

One OF OUR USERS IS OF CHINESE ORIGIN AND HIS OS LANGUAGE IS IN CHINESE ALSO . WHEN HE OPENS OUR GAME THEN ALL THE BUTTONS ARE HIDDEN

HOW TO SOLVE IT ?

[full badge]

it should be automatically

[little helm]

WELL THEN THE FONT IS NOT SUPPORTED IN THAT CASE.
ANY WAY TO STOP AUTO DETECTION ?

I AM SORRY FOR WRITING IN UPPER CASE . I'VE CHANGE MY SYSTEM LANGUAGE TO CHINESE FOR TESTING PURPOSE. I WON'T BE ABLE TO WRITE IN LOWER CASE RIGHT NOW

[full badge]

im Chinese user and i can still type in lower case

[full badge]

try just set language to English or sth by default when game launch

[little helm]

I'M NON CHINESE USER BRO. I'M STRUGGLING LOL. I'M GETTING RANDOM CHINESE SUGGESTIONS ON TYPING

[full badge]

bruh

[full badge]

try this

[full badge]

try pressing shift for once

[little helm]

OK THANKS LET ME CHECK

[supple needle]

Can someone help me? I'm making a VR basketball game but I want to also make it in such a manner that it still works with mouse and keyboard inputs. I'm using a VR template for the project. I've already created the environment and also have a working score system

I don't have a VR headset with me currently but I want to be able to playtest things with regular keyboard and mouse inputs without having to wear a VR headset

[little agate]

Hi guys, is there anyway to prevent common activable widget to take over user input, especially for character control. I even used same IMC for both game and ui, but the character input is blocked somehow when the common ui activable widget got activated. My use case is for interact button using common activable widget when player could be able to move around when the button showed up.

[modern horizon]

i'm trying to use physics to move objects of different mass with a extendable hand, does this look right to change linear damping and stiffness? i just need a way to give myself a set number of strength to pick up mass, and lets say if my strength is 28 and im trying to pick up a object thats 44, i will still be able to drag it and pick it up slightly.

i don't know how to replicate the physics stuff

[little agate]

kinda funny, been stuck for 1 day, when i posted the question here, i got the solution

[dusky cobalt]

Sometimes also ''Is Focusable" on button settings might help.

[slow seal]

hey friends, i have a question about "Get Bone Transform". I'm not sure which channel would be best to post about it in.

The question:

• Can someone clearly explain or point me to documentation that explains exactly what each of the 4 "Transform Space" options are relative to?

Context:

• I'm working on a reinforcement learning system to fully control the Manny Simple skeletal mesh, which requires careful shaping of each of the inputs to ensure quality observation signals for the model.

[north maple]

hello, i have a problem on getting hit result on mouse hold. when i stop pressing left click, i don't expect "no click" print get executed but somehow it does. i tried some logic but completed event is getting called after false hit flag. how can i prevent this?

[dusky cobalt]

I think it's because the trigger is basically very spammy and it manages to sent 2 more 'pings' as you are taking your finger out, so it fired 2 extra, but the hit result by touch was already not touching so you got no click messages printed.

[dusky cobalt]

Also the Completed logic is called AFTER all triggers finish, not when you stop clicking the button. You might try to use Canceled to set Is Still Touching faster, so then the logic after it won't fire.

[neon zealot]

Hi i have a question not necessarily blueprint, but id like to know if theres a smaller and more optimised version of epics city sample

[full badge]

rts world is the bone's absolutely transform
rts actor is relative to the actor with skeletal mesh component's origin
rts component is relative to skeletal component's origin
rts parent bone space is relative to that bone's parent bone

[lofty rapids]

ok so you have the impulse normal, when do you ragdoll the thing? i think just after you ragdoll, add the impulse ?

[north maple]

i just tried but still same behaviour :/

[dusky cobalt]

These booleans that you have, they basically don't change anything.
The Started always run before Triggered so it will set it to true. The Completed always finished after the last trigger, which is already too late for you.
Why do you care about these 2 pulses calling No Click? It's basically how it's supposed to logically be. What else are you trying to achieve? What for?

If you remove boolean, your logic stays the same, might just give you some insight on what are you really want and why are you trying to achieve it with booleans.
You might want to use just normal Get Hit Result by Channel/Object instead of under finger one?

[north maple]

while i hold i get hit result and save the hit location and on release i put move indicator at that point. getting no clicks saves 0,0,0 for hit location and indicator position gets messed up basically. tried normal get hit result too

i have other logics depending on the drag distance so it's kind of a problem for me

on 2nd screenshot my hitlocation gets messed up so it puts on my character's location. you can see no click print on top

[lofty rapids]

are you use mouse for touch ?

[north maple]

yes

[lofty rapids]

how is the input setup ?

[north maple]

you mean this?

using unreal's default enhanced input

[surreal peak]

I would move that trace to Tick and simply use the Down or Hold trigger or whatever it is to set a Boolean to true/false to have the trace. Assuming you want it to trace for as long as the key is down

[lofty rapids]

what bp is this on ?

[north maple]

yes, it makes sense. i will try it thank you

[north maple]

controller

[surreal peak]

In the end, the trigger pin is calling on tick anyway for the triggers that continuesly trigger.

There is fwiw also Ongoing as a pin

[narrow sentinel]

so i'm confused if I have widget and within it a vertical box which I have created widgets and added them as children to the vertical box yet when I get children of the vertical box it returns that there is no children at all

[surreal peak]

Either way you most likely don't need 3 different triggers

[narrow sentinel]

I add like that

and I'm looking up the widgets children and removing like that

[lofty rapids]

is the cast failing ?

[narrow sentinel]

doesn't look like it now when I debug

like theres two button in there

[lofty rapids]

print string on cast failed

[narrow sentinel]

yet according to that there is no children

[lofty rapids]

the only way to really know

[lofty rapids]

check with a print string

[lofty rapids]

i have found this debug view to be misleading

[lofty rapids]

if it was zero it wouldn't even run

[narrow sentinel]

strange so no it says theres two, oh wait I'm stupid haha I think I know why

so it seems the issue is it's only doing one of them loops

[lofty rapids]

is the cast failing ?

[narrow sentinel]

nope

[lofty rapids]

so its only removing one ?

[narrow sentinel]

it just seems to after doing one of them it the completes even though there is another one

[lofty rapids]

put a third

what happens ?

[narrow sentinel]

so i've changed it to use loop int instead and it still seems to only do one and then completes

[lofty rapids]

well foreach should work, but print string the length of get all chilren before the loop

[narrow sentinel]

so i've sorted it

well I believe i have wether its a workaround I've invented ended up using a for loop int rather then array for loop

and caching the length of the array before doing the loop rather then using the length value of the array directly

[lofty rapids]

yes cache the array before the loop is best

but you should be able to foreach

[lofty rapids]

yes cache it, i see the problem your removing while looping

[lofty rapids]

loop in reverse

or use the cache version should work

[lofty rapids]

so when you remove from the parent the one, the size of the array changes, you should never delete from the array your looping over

unless doing the loop in reverse

[narrow sentinel]

But would reverse loop be the same

[lofty rapids]

or in this case, like you mentioned a cache will probably work

[lofty rapids]

no it's not the same

[narrow sentinel]

Cause id still be removing from the array the loop is directly referencing

[lofty rapids]

https://tryitands.ee/

[lofty rapids]

"When you loop through an array from the end to the beginning and remove elements, the indices of the elements that have not yet been processed remain unaffected by the removal."

when you loop from beginning to end and remove from beginning/middle

the whole array structure changes that your looping

this can cause many errors

but either way you should cache it

before you loop, this is for performance

because the pure node connected to the foreach will run every one of the loop

if it's cache it's better

[lofty rapids]

reversed loop solves this problem

[narrow sentinel]

I'll remeber this cause I think i do similar removing elsewhere

[lofty rapids]

its a programming problem, not specifically unreal

it's very common

[narrow sentinel]

never thought of it tbf like that it would cause an issue but you learn something new every day

[small moat]

hey is there a blueprint accessible callback anywhere for when viewport size has changed? I have a render target whose resolution needs to match the screen & I prob shouldn't resize it every tick

[lofty rapids]

"I prob shouldn't resize it every tick" <-- right but what you can do is trigger an update on change

if it doesn't change, don't do anything

[small moat]

"hey is there a blueprint accessible callback anywhere for when viewport size has changed?"

[lofty rapids]

when it changes update

[lofty rapids]

not in blueprints that i know of

you can use the tick, but just update when it changes

[small moat]

ok, thank you

[distant elk]

Hi. A general question: I'm migrating stuff from 5.5 and some blueprints refuse to show up. They're on disk, but I can't see them in the content browser. Any gotchas I should check?

[lofty rapids]

when migrating, did you literally migrate, or just copy ?

[distant elk]

I migrated, it's a tool with several BPs, some show up, others don't

[lofty rapids]

but they are in the content folder when you goto explorer ?

[distant elk]

Yes. I just found the error, it's a new project and I forgot that PCG is disabled by default, the missing BPs were using PCG compontents. Thanks and sorry to waste your time!

[uneven sundial]

Good morning everyone!
Could you please help me? I'm opening the TAB, but the inventory isn't opening. I've already created a game mode, put things there, and also entered the correct entry in the project preferences. If anyone can help me, please contact me privately.

[lofty rapids]

whats not working ?

is it printing hello ?

[worthy fractal]

Does anyone know if there is an easy way to draw a rectangle in the UI around an in-world actor, like in Deus Ex:

[thorny kestrel]

I'm using Chaos Vehicle along with City Sample Vehicle

I want to access the Wheels Setup array variable, so I can access bone names without promoting and filling another array variable (duplicated information), but I just couldn't find the getter for it.

I've looked into the header file, that array variable should be public, editable and readable if I'm not misunderstanding it.

Anyone knows how to access it?

(The Get Wheels node only return an array of Wheel Status struct
(Which doesn't include connected bone informations nor wheel center positions in it

[lofty rapids]

you can draw things straight in the HUD class

[calm bear]

Hello, is there a way to update an editor utility widget on actor selection change ?

[worthy fractal]

yeah, but once I have an actor selected, how do I get the vertice coordenates for the retangle so that it fits over the actor?

Is there a way to get the 2D footprint of the 3D object in the screen?

If necessary I can use a highlight material or an outline, but I would really prefer the rectangle, or at least it´s vertices

[lofty rapids]

yes there is, i'm trying to draw a material on the hud to start with, but i'm having trouble lol

but i'm workingg on it

[lofty rapids]

project world to screen node

this will help you calculate where you need to place the box

or lines

a simple way would be with a texture or material

but that would also scale with size

but drawing lines won't be too difficult

[worthy fractal]

thanks, will try.

[dusky cobalt]

Create Main HUD widget in the HUD class, not in GameMode class. Also print literally everything on the way from first screen, is game mode getting printed and then all the rest?

[maiden wadi]

So on this note, funny enough I had to set up the volume settings for our latest project today and it made me think of this conversation. So there are sound classes that can be affected by buses. Like for example I just hooked out our music cues to a SC_Music that is affected by the MusicVolumeControlBus.

And I'm wondering if you could more or less do the same thing without a control bus that is exposed to settings. Like set it to 0 when the alarms aren't playing, and set it to 1 when they are. Effectively the sounds would always be playing in this regard, but the volume of them would be multiplied by the bus. So you could effectively turn them on and off globally just by affecting the control bus.

[lofty rapids]

project world to screen node, get actor location, get actor bounds, calculate using these nodes

[worthy fractal]

Get actor bounds is what I was missing, thanks a lot.

Exactly what i wanted

[slow pumice]

Hello, does anyone know how to add all the elements in an array?
For example, an array containing 1, 2, and 3 would need to output the value 6 into a variable.

[lofty rapids]

Create a variable, set it to zero, for each loop over the array, in loop body add array element to new variable

Coming out of completed the variable is the total

[slow pumice]

oh ... thank !!! I've been trying to do something too complex for a while but it's that simple ❤️

[cyan wren]

My gun casts a line trace and applies an impulse to anything with physics, it also applies damage and when my biped dies it then ragdolls. Im wondering now if the solution would be add a set simulate physics node into my gun and make it apply to the hit actor before the impulse is applied. But then what happens if i shoot walls? Will i then have to give every physics object a tag?

[lofty rapids]

Why not add impulse after you ragdoll ?

It will seem instant

Shoot another trace or something

[cyan wren]

It is a separate bp

The biped i mean

[lofty rapids]

Right so when do you ragdoll it ?

The problem is it hits then ragdolls ?

[cyan wren]

It ragdolls after all the health is lost from you shooting it

[lofty rapids]

Ok so where is your impulse var located ?

[cyan wren]

Yes, and i cant store the impulse because it doesnt have physics until it ragdolls

[lofty rapids]

You can store last hit impulse

On the actor

[cyan wren]

I have all of my gun scripts within my first person bp, it casts a line trace from camera and calculates impulse within there

[cyan wren]

How?

[lofty rapids]

When the projectile hits the thing

Save the last hit

Get the thing hit, store a var

It's one way to do it

[cyan wren]

AAAHHH EUREKA, or whatever the kids say, idk why that didnt click

I can save it in the gun bp

Have a short term memory to save all hit impulses and make a call from the biped

When it ragdolls i mean

Thank you btw

[lofty rapids]

Whatever Works

But just make sure you get the right impulse

[tight pollen]

what is better: Level Streaming Volume or Custom Trigger BP?

for Level Streaming

[flat coral]

I've got an issue with bullet decals where they don't properly move with the surface if it's a ragdolled skeletal mesh. I know there must be an option to stick them to a bone but I can't find it.

This is what my spawn logic looks like right now

[half prism]

To attach it to the bone.. from the line trace hit result, break the hit result and get the Hit Bone Name, then plug it into the "Attach Point Name" input on the Spawn Decal Attached node (as shown in your screenshot). Hope this helps! 🙏

[flat coral]

Oh! I assumed I'd have to create attachment points manually! Let me try this out!

[dusk bolt]

Very quick and simple question. Taking an integer like '100' and i want it to display like '1 0 0' as Text. What is the name of the code that adds things to text

[lunar sleet]

Format Text node is one option

[dusk bolt]

Thanks. I also dumbly realized I should just use Letter Spacing in a Widget :P

[little helm]

I'm facing some issue in my unreal engine shipping build, when I open the build and navigate using buttons then everything is fine. But when I minimize my application window and do some other task in my PC . Let's say after 5 minutes , I open the application then buttons are not working on clicking and main menu got disappeared when I press back from settings.

[knotty plover]

have you tested running a in editor version of the game and leaving that idle for the same amount of time to see if that also becomes locked out?

[little helm]

I'm running in standalone mode in unreal editor and still facing the same issue.
When I minimize it , the application get paused and then after 5-10 minutes when I open the application tab then all the menu buttons are nont working

[knotty plover]

I'm just wondering if windows could be doing some weird security stuff with unrecognised applications running in the background or something, that's why I'm curious if the play in editor window version also gets locked out of input, honestly that's a wild guess though

if the PIE version doesn't get locked out but the standalone and packaged build do then maybe it could point to something like that

[little helm]

the buttons are clickable but the widget is not opening. Is there anything related to garbage collection in guess.

[knotty plover]

ah ok, I've no idea then sorry, maybe describe the issue and ask gpt to find any discussion threads online talking about similar problems

[tight pollen]

someone?

I generally have lag when I use BP load stream level

but it's possible that it's only in the editor, in a packed game loading and unloading should be smooth, if not, I'll probably have to split the levels into even smaller parts

Do you have any advice? Honestly, I'd split the level into as small pieces as possible for better optimization.

or maybe there are better ways to optimize level 1, which is not big but has a lot of objects on it, I generally use UE5.3

In general, does it make sense to use Level Streaming in rooms that the player passes through quite often?

this is about constant unloading and loading levels, won't that be bad?

[spark steppe]

that depends on your target hardware budget

[dark drum]

It depends on the scale and what resources are available. If they have a lot of unique meshes in the individual rooms it could be beneficial to free up ram.

If this isn't needed, you can just hide the level to free up a little on the render thread.

The only way to know is to test it. You can still create them as individual levels as you can control when they load/unload. It might be unloading them isn't needed but without profiling you wouldn't know.

[tight pollen]

Overall, I came up with something like this. what do you think about this?

@spark steppe @dark drum Sorry for the ping 🙂 Let me know what you think about it, and if there's anything better.

[dark drum]

Level streaming already has volumes specific for handling the loading/unloading of streamed levels.

[tight pollen]

But I have more control in BP

For example, I can split the level into smaller parts and load them more smoothly — at least that’s how I see it

[dark drum]

I see the load/unload nodes more for loading/unloading levels from events like as you go to open/close a door.

With the streaming volumes you can have them control multiple streaming levels. When the player enters them it'll load all the the specified levels.

Of course I'm not saying you couldn't use them how you are but sometimes its best to see if you can use whats already available. No point reinventing the wheel.

[tight pollen]

Yeah, I think you're right — using Volumes will probably be the better option

@dark drum sorry for ping again

I unload and load 3 levels using streaming volumes.

I don't feel like packaging it right now, but in the packaged version, will the level loading be asynchronous?

[dark drum]

Streaming is handled a little different in the editor so it's best to test in a build.

Its normally fine in a build.

[lofty rapids]

what are you doing to "open the widget" that isn't working ?

[little helm]

I've created all the widget objects in the beginning of the game.
To open the widget
Current widget visibility -> Collapsed
Next widget visibility -> Visible

It's working fine when my game application is active but when I minimize it to do some other task for 5-10 minutes then it's not working

[lofty rapids]

show where it does this

i'ts probably losing, current, next imo

[little helm]

Maybe objects are deallocating and set to NULL if I minimize the application for sometime . It shouldn't happen

[lofty rapids]

^

[steady night]

Hi, having issues with collision,

This is for projectile wich collides with target and stuff happens, im trying to do so it pierces, but upon collition the projectile stops, is there any way to prevent this Without changing the collision preset to overlap rather then block since thaat would require a rework of the entire game really ?

since its stopping on the first collision i need to add velocity or something

[lofty rapids]

so what is happening is it's colliding, and this ignore actor stuff isn't working ?

[steady night]

it is but the projectile stops, and when another actor overlapps it triggers

its just hte projectile stops at first hit, and then the velocity stops,but i cant make it "not stop"

i mean in normal cases i would just use overlapp, but im using on hit then it need the blocking collisoon to activate

https://gyazo.com/c4ae12935d07f628540fdfb672609b24

[lofty rapids]

you have to have block instead of overlap ? why is this ?

[steady night]

im currently changing that, its just an old settup idnno why i did it like that but chanigng it will make it work, but needs to redo some stuff

[lofty rapids]

ya save a backup

go to town lol

trying ot make an old system fit new ways, sometimes you need to rebuild stuff

because the old system you didn't have the forward thinking that you would need this thing

[steady night]

yepp

[lofty rapids]

rebuilding can be great too, you clean up stuff and program better the next time around

[steady night]

do something then redo it

classic

yeah so now it works

just have to test alot to se where things is fucking up 😉

[lofty rapids]

can't you use a custom channel for the projectile ?

set it to block default, overlap on the enemys ?

[steady night]

yupp thats what ive done

old system... needed rework know better these days so

yeah

[digital lantern]

Hello ! I'm currently working on a system to try to target the middle of a "group" of enemies, currently I know how to do it by summing their progress on the Spline then / by the number of enemies to get an average that I divide by 2, then, in a second for each loop, I take their current progress - the average - and I take the one with the least deviation, but I'd like to be able to add the option of choosing a "group" of enemies with the most max life, and I've found a way of doing this in 3 for each loop, but it's getting to be a lot, so do you have any other ideas? (Ping me please and thanks)

[lofty rapids]

so they are on a spline ?

you have an array of enemies and you want the middle one ?

[digital lantern]

Yes i have an array but the ennemies have a different speed so they can double up

[harsh rapids]

Just compute a weighted average of enemy spline progress using their HP as the weight (Σ(progress * HP) / Σ(HP)) when you want to favor the strongest group, store each enemy’s progress and HP in a single pass, then run one quick pass to pick the enemy whose progress is closest to that weighted center.

this replaces your three loops with just two simple ones.

[maiden wadi]

Tower defence tower or ability hitting beat group of targets?

[digital lantern]

Yeah it’s for a tower defence ^^

[digital lantern]

I try it later