blueprint

[barren tangle]

i now it will spawn the overlapping event

the overlapping event is there to link the door to the action button of my character

on my main character when i perform an action, i will trigger that event through event dispatcher

the when i enter into the collision box. The door should link the event

and bind the On Action Performed

[lunar sleet]

Ok

[barren tangle]

but sometime it works and sometime it doesn't

so im wondering if the bind like that should be avoid?

[lunar sleet]

Which part doesn’t work? The bind ?

[barren tangle]

because i don't want the door to be triggered if i'm not inside of the area of the action... that's why i was thinking to bind them when i enter into the area of action

yes

the bind seems to work

[lunar sleet]

It prly means the cast failed, did you check ?

[barren tangle]

but the action not

[lunar sleet]

Oh ok

Does the action fire every time?

Like did you put a breakpoint/print string on the IA node?

[barren tangle]

the cast didn't fail because i print on the screen the message

let me try the add a print on the action

yes the action it's triggered all the time

[lofty rapids]

you got a bunch of branches log the opposites see if something is failing the branches

put a print string on the event itself right off the start, see if it's firing

[barren tangle]

the event is not called.

could it be because my actor is not 100% inside the box?

the upper part is not into the box

but the lower part is, so i assume that the event is called and the bind should be done

[lunar sleet]

If the dispatcher call is not made it means it’s not reaching that far into your logic, nothing to do with your overlap

[lunar sleet]

Don’t assume. Step through the code using breakpoints

[drowsy anvil]

hello, how do I fix this error?

[lofty rapids]

probably use other actor not component

[barren tangle]

ok i understand

in fact when i end overlap i remove the bind... but because of the character animation movement, some part of the body enter and leave the box, so unbind the event...

that's annoying...

[drowsy anvil]

how do I change it to that? in tutorial they just used 'third person character' instead of my character and it just worked

[lofty rapids]

see the begin overlap event in red ?

see how theres out pins on the right of it

your using overlapped component

probably want to use other actor, and plug that into your cast

you should notice a difference in what your following

the line probably goes from other actor to object in the cast

[drowsy anvil]

ah yes, the node in the tutorial has them in different order, thanks for the help, sorry I didnt pay enough attention

nice everything works now, very happy

[whole dove]

I'm controlling my camera spring arm with the mouse input, basic thirdperson camera control. how can I clamp the min/max value for this?

not the value output from the input action though, but the min/max value of wherever Controller Pitch Input goes

[proud salmon]

What is the "proper" way of rotating a mesh within an actor? "Rotating Movement" only works on the root.

Just set relative rotation on tick? 🤔 It's just visual flair, nothing important (i.e. a motor spinning).

[cosmic dirge]

I have made 2 Data Assets for 2 different enemies, how do i do in a blueprint when i press enter that it should spawn 3 of that type, and 2 of the other for example? im a beginner

[valid juniper]

I'm using the GetDataTableRowFromName BP Node
(https://dev.epicgames.com/documentation/en-us/unreal-engine/API/Runtime/Engine/Kismet/UDataTableFunctionLibrary/GetDataTableRowFromName?application_version=5.4)

but when I try to build for prod I have this error :
LogInit: Display: LogProperty: Error: FStructProperty::Serialize Loading: Property 'StructProperty /Game/GA_BaseGameplayAbility.GA_BaseGameplayAbility_C:GetParameter:CallFunc_GetDataTableRowFromName_OutRow'. Unknown structure.

OutRow is a framework strucutre, how is this unknowned, any idea 🙂 ?

[dawn gazelle]

Sounds like you've plugged in something wrong into the output of the node. Can you show a screenshot of how you have it hooked up?

[valid juniper]

I have many, usually used like that

[turbid cypress]

Sounds silly. But i sometimes get that when packaging. What tends to help is making it a local variabe (if it's in a function). Then trying to repackage.
There's probably a cleaner solution to have it pick it up correctly.

[static sequoia]

anyone know how to make the playable character play an animation when both holding down R and inside collision box of a separate Blueprint?

[turbid cypress]

Your pick on when to check. But if for instance on pressing R: get the overlapping actors from the bounding box, loop over them and compare it with your character.
On release of R stop w/e you want to do.

The other way around you can set a bool for a button press. And have use your box collision event.

[grand surge]

in motion matching i added crouch so

anyone known i how do i add when prees jump input it whill stand

reply anybody

please i am going to sleep thats why

[static sequoia]

can you explain it like I am 2? I want the Event ActorBeginOverlap from my box collision blueprint to somehow funnel into the condition of the branch on my bp_thirdpersoncharacter blueprint

I am very new

[grand surge]

i am 4 but not learned too much to make whachting tutorials

[turbid cypress]

leme make a screen then, sec :P

[ruby cobalt]

copy pasted some code and i get this.. I want to detect collision with the skeletal mesh in this BP

ahh i get it.. i have to create the component hit event from the skeletal mesh

[turbid cypress]

First screen is to set the button press to check in the function.
The second one is also a trigger for the function, but from the side of the actor or w/e has the collision box.

Then in the function you check if both the button is pressed and the character is is inside the collisionbox

Depending on your setup or scenario you might have to change a few things. Like if you have multiple characters you need to verify who's doing what. this way is a bit simple.

[static sequoia]

hmmm... I'll try this out then.

thank you

[ruby cobalt]

can skeletal mesh detect component hits??

i somehow can't

testing 3 different meshes atm

[turbid cypress]

weird phrasing. Do you mean detect if it's been hit with something?

[ruby cobalt]

yeah

i had a system like this work fine with a static mesh.. trying to use many skeletak meshes together and ditch the static mesh

[turbid cypress]

If it's not triggering, then most likely your collision settings

[ruby cobalt]

hmm they are all set like this

[turbid cypress]

Is your character doing any physics simulation? Because you'll need to set "simulation generates hit events"to true then.

I also always derp with this kind of stuff so i'm not 100% sure. But you might need to set the correct collision response to overlap too.

[ruby cobalt]

ah that must be it*

yeah everything is affected by physics

[static sequoia]

whats the red "set" thing called? lol

[turbid cypress]

That's a bool variable.

[static sequoia]

oh ok I see

[turbid cypress]

It holds a "true" or "false" value

[static sequoia]

yeah

[ruby cobalt]

so this bool was missing on all of my stuff there is still no "On Component Hit" maybe there's another event i can use

[turbid cypress]

protip. If you select the component and right click in your blueprint, the first option are events related to that component.

[ruby cobalt]

oh that's cool

atm neither hit and begin overlap cook

i'm testing a similar static mesh.. it works fine

[turbid cypress]

Need to check the collision settings between the character that's doing the hitting and the one being hit.

[ruby cobalt]

i believe overlap can't work considering the meshes have collision that stop that from happening ha

[turbid cypress]

And what's the case if i may ask? Maybe there's an alternative solution

[ruby cobalt]

i trigger sounds when various objects hit.. trying to use physics to build some kind of instrument

[turbid cypress]

Like a finger hitting a string?

In any case, i think both need to be set to overlap to work. But i'm not an expert :P

[ruby cobalt]

yeah pretty much but with any object

well if they have collision to use with physics i believe i can't use overlap

what I got working so far was a skeletal mesh hitting a static mesh.. the static mesh bp detects the hit

[maiden wadi]

You need to go to the BP specified, GA_BaseGameplayAbility, and use Refresh All Nodes.

You have a pin with a bad value for some reason. Refreshing it should fix it.

[ruby cobalt]

you're right! i gotta use overlap

[static sequoia]

it plays the animation the moment I press the button, am I doing something wrong? should the animation be plugged in somewhere else?

[turbid cypress]

in your end overlap you set that function bool to true :P. Should be false there :D

i just noticed i did that in my screenshot too lol. My bad

[static sequoia]

oh ok

[turbid cypress]

You understand why right? :P.
Understanding how it works is important

[cyan spire]

Hello, short question, can someone tell me how to link a Static Mesh inside my Blueprint Parent Actor so it can be modified from the child BPs?

[static sequoia]

it seemed odd that it was checked to me. but it still instantly plays the animation 🙃

[static sequoia]

it doesnt matter what pattern they are checked, the animation is still instantly playing without being inside collision box

[turbid cypress]

Well i do notice i forgot lol. So if you press the button it will always run like that.
If you're inside the collisionbox it shouldnt run without pressing though

I'll DM, since it's silly to flood chat with it

[static sequoia]

yeah

[rose crest]

SM component will be visible in child actor, just edit it there

[ruby cobalt]

wouldn't it be nice to have gpt4 in here to chat with us and helping to troubleshoot?

(and learn in the process?)

[turbid cypress]

It loves to pull stuff out of it's ass though. Think for especially beginners that might be confusing :P

[cyan spire]

Sadly doesnt work with structs, it works fine when using BP interfaces and passing vars, but not if use structs the same way. It bugs out and no data is found from the child actors

[trim matrix]

How do I make this black space not be black? Im using the Default Unreal sky atmosphere and fog

[turbid cypress]

What he said is right though.
Anything and everything in your parent class is visible in the child BP.

did you perhaps make it in your child? Because that will never be visible in your parent.

[cyan spire]

I put the struct into the Parent BP of Equipable_master and made a blueprint interface to send a Object Ref (Equipable_Master) to access it in my Character BP. When im accessing it in my character BP, i get the struct and break it. I assigned the values in Equipable_Child. When im accessing it, the server returns correct, the clients return null.

Im just looking for a more efficient way to pass values from a child bp to my character BP, because its a hassle to make a BP interface for everything ....

BP interface function*

[wind sentinel]

Hello, does anybody know how I can spawn an NPC at a specific location after a custom event has been triggered?

[bright hamlet]

Check the settings, unsure where exactly not home atm 🙏 there’s a video for it on YT

[dawn gazelle]

From the event, call the "Spawn Actor From Class" node and plug in the location you want to use <_<

[cyan spire]

If you want to do it properly : Make a Class for your NPC logic, make a "NPC Spawner" Class in which yo use the spawn actor from class node and spawn the npc, make a for each loop, make a array and put every actor object reference into that array, use a bp interface to call get reference to self and you can access all your NPCs AND their logic inside your character bp

[fiery swallow]

that's the proper way to do it?

[raw spindle]

is there a way to disable widgets in the widget designer? I basically want to "comment them out"

[raven gyro]

https://blueprintue.com/blueprint/ycdll0ss/
can anyone help me with this blue print please? i have 3 Skeletal Cubes, First Button Will turn Cube 2 and 3 off and keep Cube 1 on. Second Button will ONLY turn on cube 2, but cube 3 keep being affected.

[still breach]

Hello, does anyone have a solution to this problem I'm facing?
I have an Inventory System Component that holds a Content variable which is an Array of SlotItem. SlotItem is a struct.
I realise that I have a particular type of items, keys, that need to hold more information than a simple SlotItem, they need to contains the ID of the door the specific key opens.
So I created a derived struct "SlotKeys" from SlotItem to store my additional information. The problem is when I want to add said key to my Inventory Content through Blueprint, I get the following issue;

Any easy way to fix this?

[stone field]

"derived struct"? I don't think structs do inheritance
Perhaps best to make SlotItem a class

[wind sentinel]

@dawn gazelle @cyan spire thanks for your help 🙂 my BP does work now!

[fiery swallow]

They do in cpp , but I think he's referring to something else

[fiery swallow]

it says right there that derived structures are not allowed

you'd have to break your slot key , and manually insert them into the item struct

or change your content struct array to be whatever the derived class is

[stone field]

"Yes, c++ struct is very similar to c++ class, except the fact that everything is publicly inherited, ( single / multilevel / hierarchical inheritance"

hmm I am very rusty on cpp : )

[still breach]

Hmmm... That's problematic, Not all Items are necessarily keys, but all keys are items though..

And if I break the struct as suggested, I'm losing the keys information

And making the content array the derived class isnt a scalable viable option, if later on I have other item exceptions, I won't be able to use it

[lethal coral]

How do you find the purple nodes in the control rig editor? I've tried to search "for each item" but can only get just "for each" and"replace items" just doesn't exist. I'm trying to replicate the image here but can't find the nodes

[silk cosmos]

I would just use uobjects to store the custom properties for each item instead of structs. You'll have to deserialize and serialize them if you want to save them though.

[still breach]

Myeah.. I'm just a lil worried about losing performance about going this route, but seems to be the only viable option at this point

[silk cosmos]

Using uobjects is much more scalable anyways

[marble tusk]

There needs to be more info on blueprint Instanced Structs out there. It seems super useful, but the only info I can find is the tweet chain from the person who submitted the PR for it and a YouTube video from like a week ago

[obtuse oriole]

how do I calculate the angular velocity to rotate from one rotator to the other?

basically to calculate the angular velocity for the cube to face forward the target (white is target, blue is the cube actual forward direction)

and yes, if u have been remembering my last few questions here. I did decide to make my own physics handle actor components, physics constraints is a bit too complicated for me

[surreal swallow]

Hey Guys, Im having a problem that I cant set an struct array element. It stays the default.
in short:
I want to set a value inside my "Character Upgrade struct array", that is inside my "character struct array"

What am I missing here?

[gentle urchin]

Definetly not 😅

[gentle urchin]

Uaing structd you'd end up with. A superstruct that can handle all differences between all items

Easily gets out of hand

Can be done tho

[still breach]

Thats what I was trying to avoid with struct inheritance ^^'

Was trying to go with TVariants Arrays but seems like UE5 doesn't like that at all for blueprints and only is supported through full cpp, so kinda dissapointed here that it seems like there's no perfect solution

[crude knot]

Physics objects falling through the ground (landscape only) anyone have any tips?

[gentle urchin]

Uobjects 😆

[gentle urchin]

But wouldnt that be pretty troublesome having to cast the struct to several types to figure out whats in the slot atm?

Guess you could make some functions in the base struct that you'd just override , and identify them that way

[marble tusk]

You need to use 'GET (a ref)' instead of copy. When you get (a copy) you're then working with a copy of the struct, so it won't change the original

[still breach]

Why would I cast anything when I could use polymorphism instead?

[marble tusk]

Blueprint Instanced Structs are a thing now

So you don't even need to use UObjects for it

I think it's been in the engine since 5.3 based on what I've found while searching. Might be in 5.2 behind a plugin you need to enable https://fxtwitter.com/_Jambax/status/1592826899486867456

[marble tusk]

So yeah, maybe look into Instanced Structs

[storm shale]

U can just use uobjects instead of structs

I'd recommend relegating structs to data tables or similar stuff; rather than gameplay purposes

[gentle urchin]

How'd that work exactly?

[still breach]

That's almost perfect except I don't see a way to instantiate struct arrays

[still breach]

Problem with Uobjects is that they're a lot heavier than structs when using RPCs

[still breach]

wdym?

[storm shale]

oh well u shouldn't be sending them over the network

[gentle urchin]

😅 its an inventory, hard to avoid

[storm shale]

most likely don't need to send structs either

for example, my items are all Integers

[marble tusk]

What do you mean?

BTW, this is the only other source of info on using Instanced Structs I could find. https://youtu.be/FHDrebwibfw

[storm shale]

each item is 1 integer and that's it. You can store pretty much all info you need in a single integer; worst case scenario int 64; even worst case scenario string. an ID.

[gentle urchin]

Same, well, gameplaytags but yeah

[still breach]

So... essentially a struct ^^'

[gentle urchin]

I only replicate what is truly required

And locally update the rest (for ease of access)

[storm shale]

a struct is different than an integer in size though XD; sides the purpose is to like code them into INTs

when u get them u uncode them once; and that's it

u could store that info in a struct

or an uobject

or an actor; whatevs works

[still breach]

I mean its great when you got a single struct, but not an array you want to iterate through it seems. Or there's something I still sont get

[still breach]

Yeah but the difference is neglegible at this point. I agree, your way is more optimized, but I really dont need to go that far for my needs

[marble tusk]

Something you could do is have one struct that's your generic item info that every item has, and include in that struct an instanced struct. Then you just use whatever item specific stuct you want for each item as the instanced stuct

and make an array of that one struct

Maybe watching the video I linked would help

I haven't even used this stuff yet since I also just learned about this today

[still breach]

oh, I missed the video link, my bad, I'll have a look, thanks! It sounds like it might be exactly what I need

[marble tusk]

Yeah, I was kind of surprised how this thing I was just learning existed is also the thing it sounds like you need 😆

[gentle urchin]

I vaguely recall something it didnt support which prohibited my use of them .. cant recall what that was

It may even have gotten fixed by this point

[marble tusk]

In that video he uses a DataTable, but you could just replace that with your array basically

[gentle urchin]

Maybe it was mostly the limited bp support of the structs im thinking about..

[marble tusk]

It's funny, I was just thinking the other day how I wish I could do something like this with structs. To make it even better, I had seen the twitter thread about it back when it was first posted, but I didn't understand what it was talking about and dismissed it since it wasn't in the engine at the time anyway

[gentle urchin]

😅 same. I now got a dislikeable superstruct with me

[marble tusk]

I had figured if it was something worth knowing that people would talk about it when it's in the engine, but it seems that nobody has been. As if nobody even knows it exists

[paper smelt]

What's a good way of checking when a function is called? I want to use it to see something on a widget but dont want to use tick as it would not be the best for performance

[proud bridge]

What is the difference between a function and a custom event? The only difference I know:
U cant use delay in function
U can use RPC only in custom event.

What other differences are there?

[paper smelt]

Functions allow you to call the code all at once unlike functions. witch is why you cant use a delay.

Purpose:
Custom Events:

Used primarily for event-driven logic.
Designed to be triggered or "fired" by other events or functions in response to certain actions or conditions.
Often used in scenarios where you need to respond to an external event, like a player input or an overlap event.
Functions:

Used to encapsulate and reuse logic or calculations.
Called directly within the Blueprint by other functions, events, or nodes.
Ideal for operations that need to return a value or perform a specific task without necessarily responding to an external event.
2. Return Values:
Custom Events:

Cannot return a value.
Used mainly for performing actions rather than calculations.
Functions:

Can return a value (e.g., an integer, float, boolean, etc.).
Suitable for calculations, data processing, and logic that needs to produce a result.
3. Execution Flow:
Custom Events:

Executes the connected nodes when triggered.
Can be called multiple times or triggered by various events or conditions.
Supports latent actions (like delays and timeline nodes), which allow for time-based actions within the event.
Functions:

Executes the connected nodes and optionally returns a result.
When called, the function completes all its logic in one execution step unless explicitly broken up by other logic (like a delay outside the function).
Functions do not support latent actions directly within them (you can't use a Delay node inside a function).
4. Visibility and Access:
Custom Events:

Typically used within the same Blueprint or by other Blueprints that reference this Blueprint.
Can be called by name using "Call Function" nodes or by triggering them through event dispatchers or other events.
Functions:

Can be private or public, controlling access to the logic within the function.
Functions are more suited to be reusable blocks of code that can be called from multiple places.
5. Parameters:
Custom Events:

Can accept input parameters (like a function), but they do not return any values.
Great for triggering actions with specific inputs but without the need for a return value.
Functions:

Can accept input parameters and also return values.
Useful for scenarios where you need to pass in data, process it, and get a result.
6. Use Cases:
Custom Events:

Triggering a response when a specific event occurs, such as handling player input, responding to overlaps, or starting a sequence of actions.
Useful for organizing event-driven logic, such as triggering animations or starting a sequence of actions.
Functions:

Encapsulating logic that can be reused, such as calculating a value, processing data, or performing a repetitive task.
Ideal for calculations, data processing, and any logic that should be reusable and potentially return a value.
Summary:
Use Custom Events when you need to trigger actions in response to an event or when you need to execute event-driven logic.
Use Functions when you need to encapsulate reusable logic, perform calculations, or process data, especially when you need to return a result.

[marble tusk]

https://tenor.com/view/imostergolfra-gif-25274972

[paper smelt]

Lol

Its the best way of getting info

Learn all you can about it

Dont just follow tutorials step by step take the time to learn it and you will be a pro with it 😉

[proud bridge]

If we use a function inside a RPC custom event, will it replicate?

[paper smelt]

Should

[proud bridge]

Thank u tommyboi, this helped a ton!

[paper smelt]

Some things you have to make custom events and call them in the function

Some things wont

Like changeing materials

make that a seperate one

[proud bridge]

Yess exactly

[paper smelt]

Yeah

[barren tangle]

hey, i have someyhing weird. i have 2 different characters. child of BP_MainCharacter
When i retrieve actor from class : BP_MainCharacterChild1 like this

[paper smelt]

Ive been replicating a lot recently so im learning a lot more

[barren tangle]

and after i print the character name like that

it prints 2 Name. BP_MainCharacterChild1 and Child2

[proud bridge]

Do u prefer repnotify or just plain old server and multicast config?

[paper smelt]

Try not to use get actor of class too much its not the best with performance its very slow try casting

[paper smelt]

Well ive learned you can use the game mode as well to replicate some things

[proud bridge]

Without having to do RPC?

[paper smelt]

Sometimes

Yeah

Some things only have to run on server

[proud bridge]

Can u give me an example? It will help me a lot

[barren tangle]

i can't i have to replace the PlayerController Pawn

[paper smelt]

Sure

Give me a moment

[proud bridge]

U can use “get controlled pawn” from player controller to get the pawn currently associated with it

[paper smelt]

It only needs to run on server so I only need one custom event that runs on server to make it work instead of haveing 2

[proud bridge]

Ooo so multicast is not reqd here

[paper smelt]

Not at all

[barren tangle]

but my question is more: is it normal to display 2 names when the functions is supposed to return me 1 object?

[paper smelt]

😉

Yes

[proud bridge]

So to use dynamic material instance replication, i can use this method?

[paper smelt]

Maybe idk never tested materials through here you cant replicate everything through this meathod so id have to check

But its a good meathod to use when you can

[proud bridge]

Yes its definitely simpler

[paper smelt]

as there is only 1 game mode in a a game and it auto replicates basically

[paper smelt]

100%

[proud bridge]

Thanks man, i ll let u know of my findings

[paper smelt]

Alrighty also priv text me if you do cuz I dont get notifications from this server very much

[proud bridge]

I ll drop u a hi right away

[surreal bridge]

Sorry it took so long to respond. I managed to figure it out.

If either the year month or day is 0, it will break it.

But if they are all 1 then the changes to the time work:

[frosty heron]

That's what I said 😆

As long they are not 0 you are good, if you see my follow up comment I got the time working too.

[surreal bridge]

I had figured that if the year was 1, it would add that year to the outcome

XD

[frosty heron]

Since you are using now at some point you should plug the year from your date

Unless you don't care about year then just put 1

The moment year and month is 0, anything you set there is broken (become 0)

[surreal bridge]

I plan to use Now at the start of a new game and just advance the game from there. So the date will start at the same time but will be passing by much faster.

I also ended up changing my time tick method to a loop with a delay instead of the on tick method.

In the past I have been used to there being like 20 ticks per second and that was how fast the tick rate was. Where as UEs tick event is based on the FPS so it varies

[cosmic dirge]

So i have this array that works and spawn my actors, but i want a delay after each time, and if i add a delay after Foreach loop and between spawn actor, it stop working, any easy fix?

[fiery swallow]

Copy the foreach loop macro, paste it into whatever is calling this code. And then place a delay node inside of the foreachloop

[cosmic dirge]

I copied the foreach loop macro. what is calling the code is "Spawn" Should i just paste what i copied in the event graph there? that looks messy

[fiery swallow]

Don't copy the content of the foreach loop, on the top right after you've opened up the macro, search for it in the search bar

Copy it from there, and then in your spawn class, next to macros, right click the corresponding macro button and select paste

[gentle urchin]

I think the latter is mostly the case, and perhaps lack of knowledge/documentation on how to use them

[fiery swallow]

If that was too hard to follow.
https://youtu.be/zh8xx9abzZY?si=Y4kmx7B9Op3PfwEg

Can't really show you how to do it because I'm not at my desk

But this video seemed to do it properly

[cosmic dirge]

I made it work, i tried to follow along, and i struggled but i got there 😛

[fiery swallow]

Lol very nice

Glad to hear it

[cosmic dirge]

ty ❤️

[marble tusk]

You can avoid having to resetup all the inputs and outputs by instead copying the macro in the "Macros" list and pasting it into your macro library's macro list

[fiery swallow]

Video I sent also shows how to do that. Personally I never do it because "ain't nobody got time for that"

[gentle urchin]

I seldom have enough use of it for a macro library 😅

[cosmic dirge]

first i copied all of the macro and i wanted to put it in a new macro, and i got lost with all the input and outputs and tought , did i get stuck already? .....

[gentle urchin]

And since i cant share macro/bpfl easily across all projects...

Engine wide library would be nice

Just like engine wide asset library would be nice...

[fiery swallow]

Same, but it's the one macro that will never really change, so I usually just copy it from Blueprint to blueprint as needed 🤰

[gentle urchin]

Instead of bloating every project with all the content, only reading from a common lib and adding what is used would be neat

[marble tusk]

No, I mean, in that video he has to setup all the inputs and outputs and reconnect them, but you can avoid that by copying the macro itself in the macro list instead of all the nodes inside of it

Copying the macro like this instead of selecting all the nodes inside of it

[fiery swallow]

Oh yeah that's what I was saying to do haha

I thought you were referring to the macro library

Maybe my description was terrible

[marble tusk]

Ah yeah, I only watched the video and he does it by selecting all the nodes instead

[crude dew]

Hi, I attempted to remake Pong but Im finding that sometimes the ball will end up stuck in the middle of the playfield as the image shows I do have a function which check the direction of the ball (Which has locked rotation to prevent ball spin like in Billiards/Snooker), If the ball is bouncing vertically then destroy the ball and spawn a new one, But wondered if someone had some idea on how I can prevent this from happening without it looking really weird and modifying the trajectory of the ball wildly please? (Sorry for the long post)

[pallid nest]

hi guys, im trying to gather all widget componenets from this specific widget that contains "canvas_" so I can turn on the visibility is this supposed to be the right way to do so? atm, the print prints sucesfully the widget but I think the conditional is not correct

[frosty heron]

I will never do something like this, not sure what your objective is tho.
Would just make a base class with the function to hide certain element.

[frosty heron]

How did it get stuck? What's the logic to move the ball? Maybe it collide with invisible wall, have you try toggling Show Collision in console when Play in Editor?

[crude dew]

I can show a video demo https://www.youtube.com/watch?v=IgvwUcbfQc8 You can see it gets stuck here.

[gentle urchin]

Math wrong?

For the angle

Seems off

[crude dew]

The ball is handled by physics

This is the material handling it

The ball Rotations are "locked" so ball spin cant cause the weird bouncing angles.It seems to start off accurately then goes a little weird for some reason

[gentle urchin]

Friction?

[crude dew]

I,ll try reducing it to 0.0

with 0.0 it just goes left and right when it hits the paddle even when paddle is moving but that does mean that the friction is having an effect on how the ball is reacting to the paddle, So maybe I can modify the paddle to have angles predesigned into the paddle and that will add some "control" to how you can "direct" the ball?

@gentle urchin Thanks!! Now seems to be working better it was the friction I was thinking the friction would only affect the speed loss of when it hits something but it does seem to have some effect on the actual trajectory of the ball, So I will add angles to the paddles instead 🙂

[pallid nest]

many thanks for your reply and advise. There are many canvas hidden in my widget (40) and right now I am turnin on visibility one by one, which is not very smart so I was trying to find a better way to do this

[frosty heron]

Show your widget blueprint hierachy

[pallid nest]

all those that it says "Canvas" are the hidden one

[frosty heron]

and the actual UI?

you most likely don't want to use 1 canvas per element

they could just be a child of one canvas

[frosty heron]

If they all share the same canvas, then you will just need to toggle one canvas

also if you want feedback, the text is kinda hard to read

[pallid nest]

each canvas has a button and an image that when an integer is > 0 then is displayed,

[frosty heron]

So like, they should be a widget of it's own

[pallid nest]

thanks, but they are not the same canvas right?

[frosty heron]

instead Canvas with generic buttons

What you can do is create a widget for the button

with all it's properties (integer, image, etc)

then they all can be a child of one single canvas in your "Master" widget

[pallid nest]

so you mean creating another widget with a single image of this and then calling that one directly instead of repeating so many times , right?

[frosty heron]

are the buttons not a widget blueprint of it's own?

[pallid nest]

No. They are not

[frosty heron]

Yeah that's gonna be a nightmare

[pallid nest]

each canvas contains all these 5 elements

[frosty heron]

So you are handling them one by one

and you have 40 buttons

so 40X the work

[pallid nest]

exactly

[frosty heron]

that's unthinkable

😛

[pallid nest]

do you by any chance know any tutorial ? I know there is a way to do with a single one but I dont really know how

[frosty heron]

You need WBP_MyButton
Which contain Skill Icon, BG, Button, integer, etc

[frosty heron]

Not really because the idea is just OOP. Inheritance and Delegates is what you need to know

[pallid nest]

many thanks that is extremely helpful as now I know where to look at it so I can check it. I know there is a smart way because my widget (template) contains some skills that are done somehow that way (with a separate widget)

[frosty heron]

I would show a bit of what I done, but I just messed up my project and can't open it.

[pallid nest]

😮 really , i hope you can fix it. That is terrible

[frosty heron]

I can comment the problematic line but trying to figure out why 😛

[pallid nest]

i try to do backups almost every two days very scared of that haha

[frosty heron]

ahh f it I can do that later

[frosty heron]

Use Source Control

[pallid nest]

sorry what is that, a plugin ?

[frosty heron]

no, it's a tool that every software developer used.

can't get a job as one if a person doesn't know how to use it.

[pallid nest]

great thanks again mister

[frosty heron]

You can commit changes, and reverse to earlier version. Really important as you can time travel if your project gets corrupted

[pallid nest]

it seems I have it activated so something else to my to do list

[frosty heron]

It can work outside Unreal but anyway

@pallid nest This is my WBP_Button,

it contains all the logic that my custom button does

returning Item, Index, etc

They get populated to a single canvas panel

[pallid nest]

aha and then you will call this in the main widget right? I have it from the template as well but what I struggle to understand is how you display X times

[frosty heron]

#blueprint message
Yeah this is my parent widget

where the button gets added

and they will live under one canvas panel, so when I want to hide all my buttons, just need to switch one Canvas Panel

[pallid nest]

great many thanks again for your time and help mate

[gentle urchin]

Sweet. You could add direvtional impulse based on how clode to the edge of the paddle they hit ^^

[frosty heron]

@pallid nest The idea is to not do repetitive work, My logic to toggle all the button is as simple as toggling one single canvas panel

imo, you should try to keep all your custom buttons in one single parent

[pallid nest]

thanks again that is very helpful, i will try to think how to do adapt to what I do (is almost the same but the difference is that there should be a condition passing an integer as well - using a data structure )

[frosty heron]

Event dispatcher

You bind the delegate to the parent Widget Blueprint

[pallid nest]

bless you ! I will try that

[grand surge]

anyone known how to fix like in motion matching i created first person camera and turned of use pawn control rotation so it becomes realistic ultra realistic so but on this https://www.youtube.com/watch?v=-zkdBxBybFg here the files it was repliceated https://github.com/cenairaclub/motionmatchingreplicated

so in this replicated project i am adding same camera and same code and tuning off use pawn control rotation but its bugging camera not movig

[oak juniper]

A question. You probably saw an effect in games where grass is affected by an explosion, cant find anything really meaningful on youtube about how to design systems like this.
BUT my question is not about grass, imagine a game where something explodes in a room and every single object starts wobbling accordingly. for the animation i imagine you can make a skeletal mesh to sheer the objects, but how would you approach the system that would shear them?

maybe you saw something somewhat related to it.

[frosty heron]

I do imagine it can be as simple as applying force?

where the explosive location is the source

[oak juniper]

the thing is i dont want the objects to be physical

i want them to be glued in place for gameplay reasons until they are destroyed and no longer exist.

so i just want to do a wobble effect on top of what is practically an immovable prop.

[gentle urchin]

I wish my first ue tutorials covered those 8 years ago

[frosty heron]

😔 I wish I didn't use only blueprint for the first 10 years.

[gentle urchin]

That too lol

[barren tangle]

can you help me to do a movement that make a straight line into the direction the actor is facing?

i try that but it doesn't work

[agile moss]

The enemy does not play the punching animation montage. Anybody know why?

[barren tangle]

did you put the default animation into the Anime Blue Print to allow the animation montage?

[agile moss]

Yes

oooooohhh

[barren tangle]

that things is required

[agile moss]

It works for the player

[barren tangle]

doest your AI move?

[agile moss]

yes

the running animation also plays

[barren tangle]

ok

but in your case it will attack if it reach the location 0 0 0

does it reach the location 0 0 0 ?

[agile moss]

no

but it shouldnt at 0 0 0

[maiden wadi]

It does not use the Location if there is a valid object specified.

[barren tangle]

because your issue is to know if you reach the specific location or the target?

if you reach the target does a print works?

[agile moss]

no, it should play when the enemy reaches the location

[barren tangle]

instead of the attack?

[agile moss]

ofc, that is why he starts running again

[barren tangle]

is your mesh composed of multiple mesh?

[agile moss]

no

[frosty heron]

The A.I have anim montage slot?

[vague night]

I am doing some course and I have a task to make in UE5 using blueprints a simple game where objects randomly spawn and move toward the player, if they don't get shot down, player takes damage - think Missile Command - what would be a good way how to set this up?

[agile moss]

well he uses the same BP_anim as the player

[crimson pollen]

my mouse remains hidden. Anyone know why? I put this in the level blueprint itself

[frosty heron]

Ise the montage use the same slot ( upper body or w.e it's called )? Try to just play montage outside your system

The montage also need to use the same skeleton as the anim blueprint

Is the A.I and the player share the same mesh?

[agile moss]

it does

[frosty heron]

Set Input to Ui or UI and Game depending on your need.

Also stop using level BP

[agile moss]

im gonna try simplifying the bp_anim see if it works

yeah no that was stupid

[barren tangle]

how can i move an object to a line base on the forward vector of the character?

[crimson pollen]

@frosty heronyes I know im doing this for debug reasons. It doesnt seem to work even know I had this working a few months ago

[barren tangle]

does your issue is solved with the set Input ?

[agile moss]

You mean
Add movement input?

[barren tangle]

no, it's a collision box. that i want to move

i want to move the box following the forward vector

[agile moss]

Box
Set location to get location plus 1
And like a tick use instead set timer by event

Use a custom event first and plug the red in the red

Or if u want to move it instantly just set the location to what you need

[barren tangle]

i move it with a timeline but the destination is confused

i know the start but how can i know the end

[agile moss]

The destination is random?

A bit

?

[barren tangle]

no i want a straigtt line base on the forward vector of the character

[agile moss]

try this, but use timeline instead for the float

[barren tangle]

so regarding to where im facing, how can i would like to move to that direction the box

i can't a collisions box is not a pawn

[agile moss]

Ah right

[frosty heron]

Why can't you just parent it to the capsule?

So it follows the rotation of the actor

[barren tangle]

it's the case but for the movement, how can i get the destination?

[frosty heron]

Not sure what the goal is

[barren tangle]

i tryied something like that

[agile moss]

can u try ai move to? (wait does it work on normal actors, lol idk)

[frosty heron]

Why are you using timeline? What's the objective?

If you need to go from A to B in x ammount of time then use timeline but if not you can't use timeline for something without fixed length

[barren tangle]

the objective is to make a box move from position A to position B in a straigth line, but base on the forward vector of the player

[frosty heron]

Is this like projectile?

[barren tangle]

like projectile

[frosty heron]

Use projectile component

All you have to do is specify speed and rotate the projectile

It will shoot straight

[woven sky]

how can i fix it???

[pale obsidian]

Should I make a general parent class for, well, everything?

[barren tangle]

when you use projectil you spawn the projecti each time?

[pale obsidian]

If I have a simple parentage setup:
-Bp_human
-Bp_player
-Bp_enemy
Does it matter if I put enhanced input into the player bp or human bp?

[barren tangle]

put it into the gameMode...

[frosty heron]

Wut?

game mode?

[barren tangle]

it's related to the player controller not to the pawn

[frosty heron]

wait, what are we talking about here

[barren tangle]

you can put it on the player controller or the gameMode

the activation of the enhanced input system

it's not related to the character

[frosty heron]

depends on your game I guess

if you can swap between characters then maybe controller is not a better place

pretty sure the default template add input mapping context in the character

[barren tangle]

yes, but it don't think it's the good place to do that

it's not related to the character, so it should not be there. it can but it should not

[frosty heron]

depend on the game

[barren tangle]

player controller should be the best place, yes depend of the game

and what functionallity you will need

[frosty heron]

if you can switch between characters, then perhaps doing it in the character is better

when you posses a car, you get to have input to drive the car

when you are on foot, you can shoot, etc as a human character

[barren tangle]

if character have different Input yes, if they have the same don't do it into the character

[frosty heron]

dumping all of those in controller doesn't seem like the ideal to me

[barren tangle]

all character will share the same Input, but only if you need them to share the same input

if you do it into the character, only the character and its children will have it

[frosty heron]

so at the end, it depends on context or what your project need.

[barren tangle]

yes, im agree with that

[frosty heron]

as far as I know Lyra even usses component to do the Inputs

[barren tangle]

but to cover most case, have it outside will be better

what is Lyra?

[frosty heron]

Epic's sample project that meant to show standards

some say too over enginereed

but lots of nice things you can grab from there. The camera system saves my project.

[barren tangle]

so it's depend what you need to do and to control. you need to have on the actor that you need to control with the input system... at least

[barren tangle]

but sometime, if you need to control the main menu as well. if you have it on the character level you will not be able to do it. So all those input need to be set into the Controller, and retargeted to the good target 🙂

BUT it depend of the game

so that's why put it into the controller and let the controller controll the input is better

[frosty heron]

well I don't have much idea, don't really touch Input much

[barren tangle]

the last game i made was with menu controlled by a controller. and the controller was the good place to control everything, character, menu ...

[oak juniper]

are there tutorials on making a Squad like pip scopes where as you aim the main camera render resolution drops and blurs so that the framerate stays somewhat consistent?

[maiden wadi]

What? I'm not sure what the first part of that has to do with the last? There is a feature in engine already for dynamic resolutions which I think is what you're after which lowers render resolution to try to maintain framerate.

[woven sky]

can someone help me please!

[oak juniper]

in squad it only lowers the resolution outside of the scope and blurs it

https://www.youtube.com/watch?v=nallqz7SJ-4

its not like a common pip approach that instantly drops fps

[barren tangle]

i face the top direction but the projectil goes up right

i don't understand 😄

lol

[humble wigeon]

Would you mind sharing the screenshots of the blueprint driving this behaviour? It's easier to debug if we can visualize the implementation

[barren tangle]

i don't know why, but i have like 45° offset

this goes into the straight direction

so my question is performance wise, i spawn projectile so i create actor each time i launch a projectil... is it the good way to do?

[humble wigeon]

What if you try to untick the Rotation Follows velocity?

what happens then?

[barren tangle]

nothing, it's the same

now that i have enable it, the box is on the good rotation related to the character

but it doesn't affect the movement

[humble wigeon]

From my understanding it's no ideal, if it's something that gets created and destroyed as frequently as a projectile, you might wanna look into object pooling (You create as many projectiles as the character can shoot in a give second before you need them, and only activate them/render them when the character shoots). I've done this in Unity, not sure how to go about doing this in UE5 though 😅

[barren tangle]

but the probleme is the character can use projectil when he wants

[humble wigeon]

so if you have that checkbox ticked and the -45 degrees node then the direction is right? Is that correct?

[barren tangle]

yes

but i was not expect that 😄

[pale obsidian]

context: single player game, 3 member party. need to switch controlled party member real time.

[humble wigeon]

yeah, if you use the object pooling method, you can just create the bullets without showing them, and then only show them whenever you perform the shoot action, and then hide them later (e.g. if they hit something of they reach after a certain number of seconds)

[humble wigeon]

but if you take the -45 node then it's not broken again yeah?

[barren tangle]

ok so instead of destroy i hide them and put back into the pull

[barren tangle]

yes

[humble wigeon]

This is done in Unity but the idea is the same Introduction to Object Pooling in Unity | Object Pooling Tutorial

[barren tangle]

yes i understand the idea 🙂

[humble wigeon]

I'm gonna try to test it on my end, see what happens

[primal hare]

This one BP sometimes triggers sometimes doesn't. Not sure what is happening. Below is the related error

PIE: Error: Blueprint Runtime Error: "Attempted to access BP_AI_ThirdPersonCharacter_C_1 via property K2Node_DynamicCast_AsBP_AI_Third_Person_Character, but BP_AI_ThirdPersonCharacter_C_1 is not valid (pending kill or garbage)". Node: Assign Caught Event Graph: EventGraph Function: Execute Ubergraph BP Bridge Trigger RESPAWN Blueprint: BP_Bridge_Trigger_RESPAWN
LogScript: Warning: Attempted to access BP_AI_ThirdPersonCharacter_C_1 via property K2Node_DynamicCast_AsBP_AI_Third_Person_Character, but BP_AI_ThirdPersonCharacter_C_1 is not valid (pending kill or garbage)
BP_Bridge_Trigger_RESPAWN_C /Game/_2_D3_GAME/LEVELS/Anand/UEDPIE_0_Start_B_02.Start_B_02:PersistentLevel.BP_Bridge_Trigger_RESPAWN_C_1
Function /Game/_2_D3_GAME/LEVELS/Anand/SEQ/BP_Bridge_Trigger_RESPAWN.BP_Bridge_Trigger_RESPAWN_C:ExecuteUbergraph_BP_Bridge_Trigger_RESPAWN:0812

[frosty heron]

You are trying to access a null pointer

your variable points at nothing in the world

Eg, you are trying to access ThirdPersonCharacter but it was not set

you need to specifically set the pointer to point at some instance in the world.

[primal hare]

But it mostly works

[frosty heron]

"mostly"

[primal hare]

just when I play the whole level

it stops

[frosty heron]

whatever the case, the error triggers when you didn't set ThirdPersonCharacter

and trying to access it

[primal hare]

ok let me see all connections are there and pointing correctly

[frosty heron]

You shouldn't try to access something before setting the pointer.
Use the IsValid check before trying to access but this could be a curse if you don't know what you are doing.

[thin panther]

More specifically you're accessing the result of a cast even if it failed

[primal hare]

yes valiadated check, I've heard now let me go learn it

[humble wigeon]

I tried this just now in my own project and I think I'm getting the behaviour you're looking for? Am I right? Here's what mine looks like

I'm spawning the projectile 100 units along the forward vector, you could try doing that too, just to see what happens. It might be a collision issue when spawning exactly on the character's location maybe? 🤔

[surreal swallow]

Thank you, now it works.

[raven gyro]

does anyone have tips on how to make it more clean? QQ

https://forums.unrealengine.com/t/multiple-buttons-one-door/353559

I found this here but i dont understand D:

[white thicket]

I want some tips! So should i make all the game money system in character bp or there is other good way i can use so that i can call that event everywhere

[stone field]

If you know c++ I would look at SubSystems.
If not, perhaps a dedicated BP + a persistent Actor to handle things.
GameInstance is a possible choice as well.

[white thicket]

Okay!

[dark drum]

Is there a var type that is just the date? Day, Month and Year. If not I'll just have to use the Date Time one. :/

[gentle urchin]

Dont think so

There is

Check the return type for GetDate

@dark drum

[dark drum]

It's just the Data Time one.

[gentle urchin]

https://dev.epicgames.com/documentation/en-us/unreal-engine/BlueprintAPI/Math/DateTime/GetDate?application_version=4.27

This suggests otherwise

[dark drum]

It's just typing the data into this isn't the easiest haha.

[steel crag]

Is that your work or something you can download ? Looks great !

[gentle urchin]

Oh wth ots stiil DateTime just nulled time...

[dawn gazelle]

The branches seem a bit superfluous. If you want to turn one thing on and the other two off, just do so.

[dark drum]

I wish 'object' would appear in the parent class drop down. 😦

[raven gyro]

dangi know its superflous but it have a reason for it, idk how to explain in 1 sentence lol

[agile moss]

Why is the enemy not punching?

The montage doesn't work

[dawn gazelle]

You can always set those boolean states as needed then if there's additional logic you need to run afterwards based on their values then you can branch.

[maiden wadi]

Have you actually debugged to make sure that Attack is running?

[agile moss]

No, how do I do that?

[maiden wadi]

PrintString or PrintText node. Or click on a node and press F9 to put a red breakpoint marker on it.

Play. If you used Prints, you'll see the text show up in the top left. If you used breakpoints, the game will freeze and go to that BP's breakpoint.

[agile moss]

Yeah it printed string

Only to the empty one

The on completed doens't show

[maiden wadi]

Then expand your AcceptanceRadius to 200 and try again.

[agile moss]

And f9 worked

No difference

I folowed the same things a guy in a tutorial did

[maiden wadi]

You're not seeing a print On Success?

[agile moss]

No

[maiden wadi]

Then it's never finishing. Put a print on OnFail and print out the Enum output.

[agile moss]

Ok

[sturdy verge]

Hi, how can I use custom ini setttings in a packaged build?

[agile moss]

Shows nothing

It doens't have to do with ai move to
But with montages

Maybe

[maiden wadi]

If the move is never finishing. It won't call the Montage. So...

[agile moss]

Well the custom event is to attack

[final berry]

Hello! What is a good way to disable all input in the entire game with the exception of 1 (like a left mouse click on a "click for next" button?). Use case is a tutorial

[agile moss]

Maybe it works for a split second

[maiden wadi]

But if the move is never finishing, the custom event won't run.

[agile moss]

But its overwriden

But it does

Because

[maiden wadi]

You said a print on Finished wasn't printing?

[agile moss]

Yes

[agile moss]

after reaching the destination its told to follow again

and it does

but no montages work

for the play montage, the empty white thing works but the completed doesnt

[maiden wadi]

Dunno then. Is that the same montage the player is using in your video?

And the AI is using the same skeleton?

[agile moss]

Yep

Alr maybe I can get some help in the animation chanel

Thanks anyway

[maiden wadi]

You just want to keep the player from doing anything except for clicking a "Next" button?

[maiden wadi]

Same way you do in PIE/Standalone

[raven gyro]

Hopefully this is easier to understand, It's like having 1 button do 3 things at the same time when triggered.

1. Turn On something if it's off.
2. Turn Off something if it's on.
3. If something is already off, just stay off.

[dawn gazelle]

You don't need to check if something is on or off in order to turn it off or on.

[tame loom]

Hey i'm having a fatal error on start up of project. I managed to get into it after first opening a different 5.2 project but. I'm really worried about this. I have version control and can revert some work but id rather figure it out and not lose work. Especially being that I don't see any reference to what I was working on. Sorry to blow up this chat with this but here is the error.

[final berry]

Yea, that's an easier description 😛

[tame loom]

Seems to mention anim bp at the beginning but yeah Please let me know if anyone has any idea. Thanks

[final berry]

Maybe 1 additional action, like executing what is asked for in the tutorial (select something, click something)

[maiden wadi]

Judging that this is linker code and that this code has changed since 5.4, I would say either that code is bugged somehow, or you have a circular dependency causing issues with loading some things before others because both things need each other but you can only load one at a time.

[maiden wadi]

To stop other input, SetInputMode_UIOnly, or if using CommonUI and your tutorial thing is an activatable widget, set it's mode to Menu. Put a canvas or border(draw None) behind stuff with it's visibility set to Visible.

The first stops gameplay controls, the second stops mouse clicks from bleeding through to other things.

The allowing other inputs for the tutorial, that gets a lot more complicated.

[final berry]

Aight, those are some great pointers, I'll see what works for me 🙂 Cheers

[tame loom]

thank you very much for the insight! I wish it told me a little more. It does mention something about anim bp at the beginning so i guess i'll start there.

TY!

I saw this in the anim bp lol hmmm maybe i'll get rid of that. Have a feeling this might have been it

although the error report mentions the anim graph in the anim bp and this is the event graph so maybe not. Idk but i'll try for now.

[undone bluff]

not valid > delay > is valid
classic

[tame loom]

oh no really lol 😂

[undone bluff]

but while I haven't been following it's quite certainly not the source of the problem

[tame loom]

oh damn ok

bummer. I'm scared to keep workin on project cuz i feel like if i keep pushing eventually I won't be able to open project no matter what

[undone bluff]

ah reading an invalid memory address, most likely not an issue with something you did

make sure that you weren't out of memory or disk cache

might also be a driver issue or corrupted engine files

[tame loom]

really? ok cuz opening up a different 5.2 project first then opening up this one let me open it

hmmm ok interesting

Its still an early project. I'll check that and maybe even open it up and convert to 5.3 or 5.4

THanks so much man seriously

[undone bluff]

np, different engine version is a good idea if it's an option

otherwise worth trying a reinstall (or rebuild)

[tame loom]

gotcha ok for sure. That makes sense. least I have an idea and some options!

👍 💪 🥳

[tight pollen]

how can I add components in runtime?

[ruby cobalt]

you can, using blueprints to add them

[crude dew]

Hi, Is possible to change the material of a specific index in a HISM Component ? Here you can see I,m passing the scoring player then trying to assign the material to a specific instance index ?

[tight pollen]

spawn Actor and attach actor to component?

?

[crude dew]

Am i right in thinking that you cant actually store references to each "Instance" and the integer is just a ID Number of it,s instance held within the HISM Get Instance Count?

[maiden wadi]

This is correct.

[crude dew]

Ahh, So i cant actually get that instance directly say I had 50 instances and I wanted to get Instance number 15 how can you access this array as I notice the HISM doesnt return an array at all

Would i have to loop through the Instance count of the HISM to do this (If Current Element == 15 then do X)

[maiden wadi]

The thing is that the HISM component is the instance. It's just displaying and holding collision data that emulates multiple different meshes of the same look. There are no actual separate mesh instances in this case.

For the material..

[crude dew]

Ahh ok.

[maiden wadi]

You can affect per instance parameters on your material.

[gentle urchin]

You can make your own uobjects tho

[crude dew]

This demonstrates what Im trying to achieve

[gentle urchin]

And with some crafting have them as the 'reference' to the instance

[crude dew]

So if player 1 scores then I need to change the colour of one of them (Indicated by scribble)

[gentle urchin]

This is usefull if each instance needs to have a bunch if extra data related to it

[maiden wadi]

IMO I would just set your per instance data.

[crude dew]

this needs to be changed during runtime.

So might be easier to use 10 static mesh's

[gentle urchin]

Per instance data is runtime

You can easily flip color of an instance by having the color be a product of the instance data

[crude dew]

Not done that before, So is that in the material shaders? or in the Blieprint?

I saw Per Instance Random node.

No idea how to use Per Instance Data nodes XD

this is how i have it setup atm

Might change to using 10x static meshes and store them in an array and just update individual materials for ease xD

[gentle urchin]

😆 prob worth it

[crude dew]

JUst thought this might be easier to use xD

[tight pollen]

how can I add Custom Scene Component to Actor in runtime

[maiden wadi]

@crude dew Do you understand HSV?

[crude dew]

Not particularly, I have found my issue I had to mark as dirty when i changing it... now its working as i expected.

Im guessing that refreshes the instances to update with the new colours.

[maiden wadi]

You can also mark that afterwards too on the HISM component in a single call.

Won't change much unless you're updating hundreds of instances in a frame probably.

[crude dew]

Oh ok i,ll do it off the "Completed" (Nah its only 10 instances im updating)

[maiden wadi]

AddComponentByClass

[sturdy verge]

Is it possible to get the Screen Percentage in GAme?

[maiden wadi]

Screen percentage of what?

[gentle urchin]

Of the percent, duh!

[sturdy verge]

Of the Screen, you can set it to 40% to reduce render time

[stone field]

Like this stuff?
https://dev.epicgames.com/documentation/en-us/unreal-engine/screen-percentage-with-temporal-upscale-in-unreal-engine?application_version=5.3

[sturdy verge]

Yes, I'm looking to print the used Screen Percentage

So I can check, if it's working

[stone field]

I seem to recall some nodes like GetConsoleVariableIntValue() or GetConsoleVariableFloatValue()?

[fiery ridge]

Why does this only work if I put a Delay node between Patrol function and AiMoveTo? (This is BP task for BT, Patrol is a custom function library)

[sudden wadi]

Hi,
Anyone able to help me out with this?

https://www.youtube.com/watch?v=-t3PbGRazKg&list=PLNwKK6OwH7eW1n49TW6-FmiZhqRn97cRy&index=1&t=1s

I’m at 21:20 on the above video. I’ve followed the tutorial step by step up to this point. When I go to the details panel of my enemy blueprint, and attempt to change the AI Controller Class from its default value “AIController” to my created AI_Enemy_Controller, I’m unable to switch from the default option. I see the option for my controller come up through the drop down, but when I select it nothing changes.

[dawn gazelle]

I believe you named it AI_Controller_Base.

If you happened to create another AI Controller class off of this, open it up and check the top right hand corner and see what the parent class is. It should be either AI Controller or AI_Controller_Base

[zinc ermine]

Noob here, is it possible to make this without casting to player character? this is a master blueprint which controls my health and ammo pickups. I've heard casting is unoptimised and I plan on having lots of these in my world.

[dawn gazelle]

Casting doesn't really cost all that much. Unless you're casting 10s of thousands of times every frame, the cost is minimal.
The real hinderance here is that by having your character class referenced in this other blueprint means that in order for this object to be spawned, it would have to load the Character's class which could be potentially a heavy class to have loaded, but if it's always loaded it doesn't really matter.

[zinc ermine]

to test that Ive just Duplicated a thousand Pickups without any fps drops, Am I in the clear?

ps. Thanks for the fast reply

[lunar sleet]

Build -> Test -> Optimize if needed.

[fiery ridge]

You could instead use an actor component to store HP, ammo, etc

And use same component on other actors as well (enemies)

[hollow tendon]

Hi. I have 2 actors. An arrow actor and a tree actor. I want to set the arrow actor to the tree's actor location expect i want to add 100 points to the x axis of the arrow actor ( means i move the arrow to the tree location on z and y but move it 100 points to the direction of the tree aka to where it is looking at )

The tree:

arrow actor

Current setupp

What did i do wrong?

And how to get the desired results? Thanks in advance

[undone bluff]

let's start with, where is this

[hollow tendon]

in the arrow's actor

[undone bluff]

ah, alright and I assume the get actor of class is just temporary and there is currently only one tree?

[hollow tendon]

yeah

[undone bluff]

okay let's move on to the meat then, the forward vector is normalized, if your tree's forward direction is x then it will return 1 0 0

[hollow tendon]

you see?

whereever the tree faced at

[undone bluff]

right, right

[hollow tendon]

i want the arrow to be placed 100 point from the direction the tree is facing at

[hollow tendon]

ok

[hollow tendon]

yeah

what do i do now then

[undone bluff]

so you get the forward vector, and multiply it by the distance (100)

[hollow tendon]

done?

[undone bluff]

nope

[hollow tendon]

ok

[undone bluff]

first of all multiply the forward vector by 100, you are multiplying by 1 (not doing anything) then dividing by 100

[hollow tendon]

done

[undone bluff]

you are multiplying a single axis

[hollow tendon]

yeah?

i want the x axis, no?

done

not work as desired

[undone bluff]

we are dealing with world space

[hollow tendon]

yeah

i just want it to go 100 points from direction of the tree

so no specifc axis i guess

[undone bluff]

yes please have some patience I am trying to explain the process step by step

[hollow tendon]

yeah i am paitent, i just love to ask fast 😆

sorry

[undone bluff]

unimportant but you can right click the bottom pin and make it a single float so it's easier to manage

[hollow tendon]

wow what is wrong with ur ue5

it looks slick and modren

[hollow tendon]

hmmmm

[hollow tendon]

make sense

[undone bluff]

if you put 100 there it'll basically do the same thing as a 100 100 100 vector

[hollow tendon]

where i click which one

[undone bluff]

right click the bottom vector input, with the 3 fields

[hollow tendon]

done sir

[hollow tendon]

hmmm

[undone bluff]

you want To Float

[hollow tendon]

done

correct or false?

[undone bluff]

wrong node, the divide node on the right isn't needed

we just multiply

[hollow tendon]

hmmm

done

i removed division node

[hollow tendon]

now it is only 100x on all axis and output is float

ah

done

[undone bluff]

perfect

one more step

[hollow tendon]

thanks!!

[undone bluff]

what we have is a local offset

[hollow tendon]

hmmm yeah

we just add 100 points

[undone bluff]

that's what we did already

but we need to make it world space now

[hollow tendon]

yeah

[undone bluff]

all we have to do is take the actor location

(recombine the pin)

[hollow tendon]

ok sir

which one

[undone bluff]

you have right click and split this pin

you can recombine it into a vector again

[hollow tendon]

done sir

[undone bluff]

nice, now we just add the two together like this

[hollow tendon]

done

[undone bluff]

that's it

[hollow tendon]

Does not work

[undone bluff]

odd. time to troubleshoot then

[hollow tendon]

wait

@undone bluff THANKS SIR

it works

wow amzaing

you are a mathmatical genuius

[undone bluff]

glad I could help, you should make sure to remember this specific pattern because it's needed a lot

[hollow tendon]

so lets re-cap what i learnt

we got the forward vector of the desired target

that we want to offset our set actor location to + offset on the forward direction

the get forward vector has 3 inputs tho

why?

isnt the forward always the x axis?

why the get forward vector has 3 vecs

make no sense

[undone bluff]

the local x axis is forward (in unreal engine) but if you turn the tree 90 degrees now the local x axis is along the world's y axis

[hollow tendon]

hmmm

impressive knowledge sir

[undone bluff]

it's fundamentals 😅

but it is understandably tricky to learn

[marble tusk]

https://www.unrealengine.com/marketplace/en-US/product/crystal-nodes

[undone bluff]

^^^

[hollow tendon]

yeah

it is indeed tricky sir

[hollow tendon]

thanks pepe

[undone bluff]

also electronic nodes, but that's paid

[hollow tendon]

sir..

i am a game dev

that's by default mean i am broke

i cant afford that

🤣

[undone bluff]

that's so real

[hollow tendon]

as real as unreal engine

[sudden nimbus]

cries that my i9/64GB/3080 is woefully insufficient

[hollow tendon]

for what? seems more than enough sir

[sudden nimbus]

it's not

[hollow tendon]

sadge

[sudden nimbus]

HLODs 🥲

[hollow tendon]

remove all features and use the mobile preview at 50% screen res 3D, issue solved

🧠

no more lag

[hollow tendon]

nanite

[sudden nimbus]

nanite doesn't replace HLODs 🙂

[hollow tendon]

hmmm

i dont know

[compact fable]

Hey guys, got a question. I am making a game that has a PC version and VR version. What would be the best way to separate the maps? Have different levels for each or use sublevels?

[sudden nimbus]

48km2 land mass world partition level, you are not going to skip HLODs for that

[hollow tendon]

What if we are dealing with a local compoent? say u want to apply what we did to a component of the tree class?

say i want to move the arrow class to the leaf of the tree + 100 points to the direction the leaf is facing

this adds more complexity :/

i will copy paste our code

but replace the tree vector with the component vector

[hollow tendon]

nanite can work for world partion i think?

[sudden nimbus]

sure it does, I know because I'm using it. you still can't skip HLODs

well, if you want more than a small square of that world to be visible. This is why Epic uses HLODs on the projects it also uses nanite, such as city sample

[hollow tendon]

impressive

[sudden nimbus]

to be fair it's mostly just landscapes that make HLODs so expensive, and it's questionable that it should require such resources. #level-design message

[hollow tendon]

thats sad, i can not get

forward vector of a componet

only an actor

massive limiation from epic dev?

[hollow tendon]

nice

[undone bluff]

well an actor actually technically doesn't have a transform, its root (scene) component defines its location, rotation and scale.
every scene component attached to the root component has a transform relative to this root component, but there's still functions to get and set world transform as well as getting the forward vector, they will just do translation between world and local behind the scenes

I am not sure why you can't get the forward vector, are you sure you're targeting a component that actually can have a transform (if it's a mesh or anything else visual it does)

[sudden nimbus]

I've probably got about 15% of my worlds final HLODs set up and it takes about 3 hours on my system to build them. So I'll probably be looking at a 20hr build time for the final world, assuming I don't hit any additional VRAM or RAM bottlenecks

[hollow tendon]

Thanks for your help

[hollow tendon]

sad. i hope one day u will get a 256 Ram and rtx5090TI and dlss4 and amd 8950X3D 32cores 64 threads cache 512mb

🙏

and QD OLED 480HZ 4k 0.01ms response time screen and 16Khz mouse polling rate

[sudden nimbus]

next upgrade will have to be at least 512gb of RAM and a proper professional grade GPU

[hollow tendon]

yeah

make it 1024 gb ram

or 2048 Ram even better

🤣

[sudden nimbus]

you laugh but that would be lovely

[hollow tendon]

LOL it is insane numbers bro

2048 Dram is insane

[sudden nimbus]

the motherboard that supports it would be nuts on price

I'll just say: Don't try to build an open world if you aren't ready to pay for it.

Both with your time and your money

[hollow tendon]

yeah

i make basic puzzle game

with maximum 50 mesh on screen

in which most of them are cubes

with 1024x1024 textures

😎

runs on 64mb dram, gtx169 ti, 5hz 32pixels mointor, 64hz mouse and intel core i 0.1 256mhz cpu 0.5 cores computer

fully optimized better than 99.9% of ue5 releases thts for sure

their optimiztions sucks, they release them with gpu usage does not go high even if u have the world fastest cpu

game caps at 90fps, lowering settings to get higher fps? nah, lower settings to keep fps at 90 but lower ur gpu usage the lower u reduce ur settings

so annoying

wait

my textures have more pixels than my target monitor resoutlion/pixels

gotta drop that to 16pixel

[undone bluff]

I solve this problem by making the open world only as big as I can fill with unique content by myself, which is not very lol

[hollow tendon]

this is a totall mess

[sudden nimbus]

PCG though ehhh? 😄

PCG and actor filters on level instances: this stuff is rad

[inland walrus]

Any ideas on how to make it so that 's' makes him turn around and run the other way instead of running backwards?

[hollow tendon]

looks a fun game

[sudden nimbus]

are you using character movement component?

[inland walrus]

yeah

[sudden nimbus]

there is an option to match orientation to motion which might be of interest

but if you are using root motion animations, it would be higher quality to handle this either in a blend space or if you are using motion matching, to do it there

...assuming you have animations for it

either way more an #animation question

[inland walrus]

Ah okay, yeah i'm pretty new to this motion matching

[undone bluff]

mildly unrelated, but it's honestly crazy that orienting the character to the direction of velocity is not built in (there's only a setting for the direction of acceleration)

[inland walrus]

agreed

[sudden nimbus]

I believe technically it does neither -- its based on the player's input

[undone bluff]

I think both are options

as well as control rotation

[inland walrus]

its the motion matching that I cant figure it out with

[sudden nimbus]

ah right, bUseControllerRotationYaw will do it based on the input, bOrientRotationToMovement is based on acceleration

[sudden nimbus]

are you already doing motion matching?

[undone bluff]

beats me, never messed with MM, but I'm quite sure the sample comes with a toggle for this very thing

[inland walrus]

Any idea where? & my dev set it up but he's inactive atm

[undone bluff]

this should be it

would look into what that does

[inland walrus]

damn, thanks. When I click the middle mouse button it turns how I want it. Now I just need to figure out how to make that the standard

[frosty trellis]

yo

im new to bp and i was wondering how to turn off the sound when the player turns the tv off

[dawn gazelle]

You can use a sound component on the actor and turn it on and off.

[frosty trellis]

thank you ill look into that!

[inland walrus]

Anyone know why this isn't working?

[daring merlin]

youre casting to your anim blueprint instead of your character class

[fallen glade]

I provide this set of vertices to a procederual mesh I add like this: is there a reason why it's not generating? Fist time I touch this. SHould I use the dynamic mesh component intead? What's the diffference?

oh it does work but I should be working in local space instead ha

[ancient moth]

How could i calculate, how far i have to move a object to the left/right, until its in the center of the screen?

[manic vessel]

Im trying to spawn this collision box as the center of the cable component , but im not getting the result I need

[silent drift]

This might not be the right Channel, bit figured i start here. I need to make tech (want as well, I know there are solutions on marketplace but I want to learn), that will fade out walls and such when the players enters an interior. I am making a 2.5D game and would like to make it that when a player goes behind a wall or such that would hide them I fade the asset out, or even just hide.

Is that a BP thing or more a material thing I would call from a trigger BP?

I have no real idea how to start on this and that is why I am asking.

[fallen glade]

Can be both there are plenty of tutorials on youtube I think. You can either trigger visibility from blueprint, trigger some sort of fade from blueprint or have a simple shader with some opacity mask in line with the camera view

[silent drift]

Thanks!

I think feel like i might trigger it from a BP since opacity is usually quite expensive.

Just hide the mesh or such then.

[maiden wadi]

It goes both ways. Opacity with an MPC set from whether the player is inside or outside is probably cheaper and less bug prone than having to maintain the meshes you've set invisible, or getting all roof things to affect them.

[silent drift]

Oh. Interesting. Thanks! Didn't believe that.

[maiden wadi]

GPU vs CPU. GPU often has a lot more to give in most games, and having to manage all of the roofs on CPU can quickly lead to framespikes or unmaintainable code. Plus you get fading and blending if desired which can look nicer.

[manic vessel]

Nvm I Figured it out.

[grave relic]

I need to put my "Format Text" as a body to my URL, anyone how to do this?
THANKS.

[silent drift]

Thanks for the reply!

[rotund barn]

so if something is already loaded (for an example the player bp or the game instance bp), does casting to it eat any additional resources, as i know that casting should be avoided because of that, but should i avoid casting to things i know are always loaded anyways?

[manic vessel]

Hey anyone clever enough to figure out how I could scale a collision box Height to match a length of a Cable . I am trying this but it does not scale correclt with different lengths

[stone field]

imo it's not really about casting, it's about :

• don't get stuff every frame with clumsy ways like GetAllSomethingsOfClass etc
• if you have to access something that is tricky to get ( like you need to use GetAll ), then cache it

Relevant thread : https://forums.unrealengine.com/t/avoid-cast-alternative/795126/25

[maiden wadi]

What if the things you need all of them for changes often?

[stone field]

I would look at interfaces for communicating things perhaps

[maiden wadi]

What does an interface have to do with maintaining a list of things?

[stone field]

sorry, maybe I am mixing up conversations

[rotund barn]

okay, so is it okay to get a reference to camera boom and follow camera on event tick? cause im altering that in another bp and using Vinterp node which requires the tick to function. or should i just make an interface and move the actual camera adjustment to my player bp?

[gentle urchin]

Manager 😄

[maiden wadi]

Realistically, casting is fine and should not ever be "Avoided". Just depends on your project structure. You cast to code only classes which links them all together and anything with an asset you softref and async load or preload for levels/areas when you can.

[gentle urchin]

Manager component, with auto registered subject components

[stone field]

Depends on how you get the reference, are you having to find it through a GetAll on every tick? If so, those will slowly start piling up I think, and I would recommend caching that reference so you arent getting it on every tick.
Regarding where stuff should be, that can be tricky. I try to keep things independent, so a Player shouldn't really have to know about the Camera, but that might vary depending on the case

[gentle urchin]

Ofcourse casting is fine , like most things have their place, it's just important to be aware of the implications, and as you say, softref assets etc

[gentle urchin]

encapsulate logic whenever you can is a good start. Avoid other bp's directly changing something in a different class

You'd usually want to expose a function, so the class actually does the thing it needs to do, through a public function

[rotund barn]

but the camera is literally attached to the player? its a third person camera, so they are located inside the player blueprint. so what do you mean by separating the player and the camera?

[maiden wadi]

Why does it have to be a second BP affecting the player's camera?

[rotund barn]

okay, makes sense. thanks

[maiden wadi]

Like what is the other BP in this context?

[gentle urchin]

(also there's a player camera manager, specifically for camera management)

[rotund barn]

laziness, probably. basically when i enter a house or a building, i have a door actor with box collision, which when overlapped opens the doors, but it also changed the camera, moves it closer to the player, a bit to the side, and increases FOV. makes it better for small interior spaces

[maiden wadi]

Definitely do not link that do the player.

[rotund barn]

ohh, i didnt know that. so can that change things like boom arm lenght etc..

[gentle urchin]

It directly works on the camera itself I believe

[rotund barn]

then how do i achieve that? the settings for all of those are inside the player bp

[grand surge]

hey to replicate iti have to add custom events or run on server before branch or after bracn\

[maiden wadi]

The primary reason is: Your door should be able to exist without the player character. The player's character should not have to exist for the door to be able to function. Anything should be able to trigger this door, like AI or otherwise. And you're forcing an entirely unrelated class to be linked and loaded. If you port this door to a new project, you also have to port the player character, and maybe your other project has a very different idea of a player character with very different coding.

[grand surge]

?

[stone field]

You could for example have the player know "I am Inside" by going through the door
Then have the Camera manager have states like "Inside" and "Outside" which have it behave differently

[grand surge]

i have to add custom event to replicate so before branch or after branc

[rotund barn]

huh? it doesnt need the player, other than for the camera adjustment, which i stated/asked earlier if i should instead make an interface for signaling something in my player bp to then change the camera inside of there.

[rotund barn]

what is the camera manager? so is it something that exists outside of the player blueprint?

[stone field]

https://dev.epicgames.com/documentation/en-us/unreal-engine/cameras-in-unreal-engine?application_version=5.4

[grand surge]

hello

help me

[stone field]

Basically I think what you could have is two different cameras, InsideCamera and OutsideCamera, and blend between them smoothly via the PlayerCameraManager

[grand surge]

bro reply me i need help

[maiden wadi]

Needing it for one reason is still needing it though. I'm not sure I would make the door be the thing adjusting here either. Another avenue to being bug prone. Player enters door, camera zooms in. Player exits building some other way via ability(spell, item), walks through a broken wall that is not a door but still entered through a door, game code teleports them for some other reason. Any one of these cases requires anything else moving the player out of the building to care about it's camera, and you have a long list of things that can cause this to happen that only grows with the game.

You can get the same kind of functionality by making something like a volume for the building, or tracing from the player to a "ceiling", or using some form up texture as a heatmap for Indoor/outside, which all can dynamically adjust based on your game and work regardless of what happens to your character.

[maiden wadi]

2. Be patient when asking for help
This isn't an official Epic Games support channel so we can't guarantee a response. Don't ping people unless you're replying to them. If someone can help, they will. If not, come back in a few hours and consider rephrasing your question or adding more details. ```

Also, you're in the wrong channel. You're asking about something related to [#multiplayer](/guild/187217643009212416/channel/221799385611239424/) with a very incoherent sentence.

[rotund barn]

oh okay, thanks. i just dont know if i have the skills to do that. but ill try. the tracing seems like something i can manage, so if im tracing to a cealing, would this eat performance if the trace is always running? i have no idea how performant traces are

[stone field]

A couple of traces here and there are fine, especially if they are of limited distance

[rotund barn]

okay. thanks

[maiden wadi]

Wait til you see some of the crazy audio stuff people do tracing around to do spatialization. 👀 You fear traces much less after this.

[rancid moat]

I need to slowly pull two object together, how would I do that?
It's a truck and it's cargo, I need the attach system to be loose enough that it's not to hard to activate the lock system, but I need the locking to be very precise. So I want to slowly pull the cargo to the correct position once close enough.

[rotund barn]

well... my 10 year old fossilized cpu fears literally anything : D

[snow inlet]

hello, so i added grab items system in my first person horror game and if im standing on item while grabbing it, it makes my fly. someone told me i should get reference of object while grabbing it and disable collision but idk how i couldnt find tutorial for it

[maiden wadi]

You can open Unreal. You're fine. 😄

[rotund barn]

true. tho i get like 10 crashes per day

but i realized 0.5 or 1 second interval for the trace is probably fine, so yeah, no need to worry

[paper latch]

Does it matter, performance-wise, if I have loads of this same object reference variable duplicated a bunch of places? Or is it better if I branch them all off from a single one?

[sudden nimbus]

nope doesn't matter

in fact please for the love of spaghetti do that

this doesn't extend to pure function calls though, that is definitely performance sensitive. but variable gets? go wild

(also for pure function calls, reusing the same node is not more performant either)

[paper latch]

awesome thank you!

[tropic token]

guys, I faced an issue with a character controlled by AIController. The problem is that the value of Get Actor Forward Vector is rather strange. The model of the character is being rotated just fine, I made it follow my player controlled character and visually it's all good. But when I call get actor forward vector I get very strange values. Is it something common for AI controlled character?

[sudden nimbus]

how are you rotating the character? character movement component and AI controller have many options for doing it, kind of sounds like you might not be using any of them though, perhaps doing something yourself?

[tropic token]

i'm acutally not sure. Now I tried to do the same on my character, and my GetActorForwardVector is actually 0,0,0 there for some reason

[sudden nimbus]

you mean 1,0,0 I assume

there's two nodes iirc, or maybe it's one node with a parameter-- you can get 1,0,0 in actor space (I imagine it's constant) or the forward vector in world space for an actor

easy to use the wrong one

[tropic token]

wow, it's really confusing. When I use print string to print it our, the values looks good. it seems like it's in normal range when I rotate my character. But when I try to call draw debug arrow function puting line start as getactorlocation and line end as getactorforwardvector(multiplying it by 100) it always ends in 0,0,0 or close to it 🙂

I guess I need to learn something somewhere about something xD