blueprint

[elfin oyster]

given a spline from point 0 to 1, and a repeating mesh along it (the black line representing the external bounds which can be considered 2d) how would i calculate the world locations of a, b, c and d

i thought i could do it using some simple vector maths, location of point on spline, get right vector and knowledge of the mesh width and that works if the spline is in a certain oreientation but not all the time

[ruby cobalt]

yo.. can<t find the "combine" node

ahh it's "make" like with structs

[jaunty jolt]

this is more of a programmar question.
i have items and clothes that my character picks up.
these are jackets, pants, etc...
i have them in a data table, DT_Clothes.
Now i want the same jacket with different color. So it just changes the color using material parameter.
Should i create a row for each different color of the same item?
Then ill have like: blue jacket, black jacker, pink jacket...
and same for pants, blue pants, black pants, etc...
i know there must be a smarter way to do this

[ruby cobalt]

yeah I'd create lists of possibilities and then randomly roll a value for each attributes
item: shirt, pants
size: small, large
color: red, blue.

you'd flip a coin for each attribute and pick the result
this way you can have thousands of outcomes and not have input all of them..

Is this what you're after?

[jaunty jolt]

well thats a good idea

but not what im doing

i have them in a data table with specific variables

the problem is that they vary mostly in color

so that means having 5 jackets, where only the color changes in the data table

just trying to avoid making a data table of like 6 entries like "red jacket, "pink jacket", "blue jacket"

they are changing only the color and 1 or 2 attributes

but maybe its the only way

[trim matrix]

If I have settings menu and I want to have it so when they are set they save regards off whether the play session is closed or reopened

What would i use ?

[signal bane]

I ended up fixing this by grabbing an earlier version of a uasset and re-running CoreRedirects with additional coverage, something must've fallen through the cracks but I don't know what.

I highly recommend multi-cursor when doing large scale migrations of CoreRedirects, makes it way easier to avoid human errors of accidentally typing something wrong and not being able to hunt it down.

It's also possible it resovled correctly and this was an disjointed/unlinked serialization issue that was going to plague the specific file going onward.

[flat coral]

I'm looking to make a minimap system where there's both a HUD map element and a full map screen that you can rotate around. Is a SceneCaptureComponent the right tool for that? Or is there a better way to go from a camera to a UI widget?

[iron stump]

Would anyone know what node is used to temporarily block UI button inputs? The "disable inputs" node doesn't stop button inputs from happening. Nor does "disable chatacter movement" node
I'm trying to set up a race. This is to keep the vehicles from jumping the line before the green light comes on

[simple berry]

i need a little bit of help, im trying to make a gravity control system for my game that the player can use to alter the strenght of the gravity at runtime, but keep coming upon dead ends for how to implement this, does anyone know a good way to?

[lofty rapids]

you can set the gravity scale

[simple berry]

is it possible to set gravity scale on objects in the enviroment without a movement component?

[trim matrix]

so i have these balloon platforms that pop when the player collides with the sphere collision in the blueprint, i want to make some of them drop an item when the balloon pops, how would i do that?

[simple berry]

could add a weighted bool branch, so only when its true it spawns the dropped item

[trim matrix]

how do i do that?

[lofty rapids]

name your event something relative to what it's doing

[trim matrix]

i did, its just like that bc i copied it over from another item

[lofty rapids]

well what they mentioned is a random bool with weight node

[simple berry]

like this is how i would do it

[trim matrix]

but i didnt want it to be randomly dropped, i wanted to have a seperate version that drops an item

[simple berry]

what you do there is set the spawn class to what you want to drop though

[lofty rapids]

you could expose a variable on spawn

and use that variable to determine if it's the kind to drop or not

[trim matrix]

im confused

[lofty rapids]

you want that some of the balloons drop an item ?

how do you place the balloons, do you place them in the level or spawn them ?

[trim matrix]

i wna duplicate the blueprint, so i can place some of them with items, some of them without, all will be manually placed in levels

i have it working to pop and respawn, but i just dont know how to make the duplicate drop the item, bc they wont respawn

[lofty rapids]

so you have a duplicate and it does the same thing as the other balloon ?

is it the spawning part or the drop item part your having trouble with ?

[trim matrix]

the balloons spawn fine, but idk how to make it drop an item

[lofty rapids]

you can spawn actor like shown without the random bool and branch

then maybe add some physics put some gravity on it

so it drops

[trim matrix]

lemme try

it spawned the item but it didnt drop, how can i give it gravity in this blueprint? or do i have to add it to the actors themselves?

[lofty rapids]

you can set simulate physics on the mesh @trim matrix

[flat coral]

Is there a way to make a scene capture camera ignore objects by filtering IN? (IE, I've got a level with like 10,000 objects and I don't want to see ANY of them in this camera except for the handful I select. But I don't want to manually set some bool flag on 10,000 actors)

God there's a way to add things to a "show-only" list but I can't figure out how to make it use that

[trim matrix]

but i dont want every placement of the item to fall, some float

[flat coral]

FYI it's this

[lofty rapids]

so then you can just do it from bueprint after you spawn it

[trim matrix]

how do i do that?

[lofty rapids]

where cube is the mesh

if you drag out of the return value of the spawn, and "set simulate physics", then select the one with your mesh (mesh)

[trim matrix]

how would i make it drop the stars blueprint so it still has the particle, and rotation?

[slim wadi]

aye why this is causing lag / this log?
LogScript: Warning: FLatentActionManager::ProcessLatentActions: CallbackTarget is None.

[bleak gate]

I'm trying to build a tool to allow my artists to view their pixel art in-engine without having to open up Unreal.

This requires me to generate sprites at runtime. While I can open files to generate a texture using the Import File as Texture2D node, I can't figure out a way to create a masked, lit sprite from this at runtime.

I can generate a billboard, but that is blurry and doesn't cast shadows or react to changes in lighting.

If you guys have any ideas, it would be really appreciated 🙂

To clarify, I don't even necessarily need to create a sprite from scratch. Even just being able to change the source texture to an existing sprite would work

[naive stream]

I'm far from an expert but maybe somehow loading your files into a render target and then showing the render target instead. This video shows the second half of the process: https://www.youtube.com/watch?v=wIfovfaf01w if you havent used render targets before. The video might also give enough of a hint as to how to do the first part

[main lake]

I'm trying to create a voxel game where the player is inside a prison and needs to escape. And the level is made out of cubes like in Minecraft and he can break most of those. How should I make this system ?

• Should I use the Voxel Plugin or develop that from scratch and implement all the optimization features because there will be alot of cubes (so I need to not render faces that aren't seen by the player ,greedy meshing, etc...) ?
• Is there some things that Unreal could take care of for me directly out of the box ?

[ruby cobalt]

yeah you could use two tables.. one for colors specifically

[naive stream]

If this is a small prototype/school project then i would recommend instanced static meshes.
If this is a real game you wanna sell then voxel plugin

[main lake]

Alright, are you familiar with the Voxel Plugin ?

[naive stream]

can't say i know much more than a surface level

[main lake]

Because I think there's an issue with the Voxel Plugin for my case as people told me that it can't handle individually placed voxels and it's usually used to generate voxel terrains instead. As in my game I will be the one designing the whole level, so the blocs will be placed manually, and individually textured, etc...

is that true ?

[weak idol]

running into an issue with one of my widgets, some of this stuff had been refactored, possibly renamed or reparented. getting this now, any ideas?

Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 347] 
UBlueprintGeneratedClass::GetAuthoritativeClass: ClassGeneratedBy is null. class '/UICore/Blueprints/3DUI/Widgets/WBP_3DWidget.WBP_3DWidget_C'
A breakpoint instruction (__debugbreak() statement or a similar call) was executed in UnrealEditor.exe.

[naive stream]

well with voxel plugin I know you can dig/sculpt at runtime, i so I dont see why a single block shouldnt be possible:
https://www.youtube.com/watch?v=cyZYbwdG6gA

[main lake]

But that's ingame, here I'm talking about designing the level upfront first (in the editor)

I know but you don't understand what I'm saying 😄

xD

[naive stream]

i misunderstood sorry

it is possible

[main lake]

do you have any tutorial / documentation showing how to do that ?

[naive stream]

So it would probably be a sculpting workflow similar to https://www.youtube.com/watch?v=3MjHEHkjtw4
But with a voxel size of 1x1 meters (like you see in the first video i linked at 3:05)

[dusty jungle]

How do you make it so that when you press a button on one UI widget, it hides that and makes a previously-hidden UI widget visible?

[naive stream]

https://www.youtube.com/watch?v=QESuwyv5Mdk

[dusty jungle]

Thank you for the video, but the question isn't about buttons. It's about widgets.

The assignment says this:

[naive stream]

a button is a widget, the set visible part should be the same

[dusty jungle]

Make the progress bar [widget] hidden when the main menu [widget] is visible.
When you click on the "Start Game" button, the main menu disappears and the progress bar appears on the screen.

[naive stream]

you should be able to do the same as in the video, but dragging your progress bar into the graph instead of the button

[dusty jungle]

The problem is this is how far I've gotten, and it doesn't seem to work.

Progress Bar is a separate widget blueprint.

How do I turn the widget blueprint into a variable I can drag onto the main menu blueprint?

[bleak gate]

I'll give it a shot. Thanks!

[frosty heron]

? You are plugging nothing to the set vissibility

the target needs to be your ACTUAL progress bar, not some dangling cast node without inserted object (Casting is a type check)

if you want to hide your progress bar in seperate widget, you need to pass the reference to the widget where you wants to set the vissibility

[dusty jungle]

Is there a tutorial on how to have the progress bar be visible in the main menu widget?

As in, how to make a variable visible in another widget blueprint.

[frosty heron]

any basic widget tutorial should show you how to toggle vissibility

more of #umg channel

you should show your designer tab there, you will get more chance to get help

[dusty jungle]

Okay, I posted it there.

[full flax]

Built a utility blueprint actor to add a row of numbered stones meshes in my level using construction script. It adds the stones as a child actor component. I'm having a hard time setting the parameters after I create them...Is this not possible?

[jaunty jolt]

ah, and how do i tie them together if thats possible?

[zealous moth]

I wanna bounce this idea around in terms of performance.
I got a maze generator on a fixed size of 10x10.
My workflow generates the maze by placing room actors, then moving the nav mesh in the center and changing the dimensions and finally reloading the navigation data.
This takes about 5-7 seconds.

Would it be more efficient to go about it through subtraction?

bake the maze 10x10, then when I generate, remove the rooms that aren't needed and NOT reload the nav mesh?

[ionic quiver]

I've created an Actor component that I need to add to potentially hundreds of objects. You can't select multiple and do an add component from everything I could find. Anyone have a trick to this by any chance?

[zealous moth]

use parenting instead. Either make a base parent you add the actor component to or just add that logic intrinsically.

[ionic quiver]

Problem is I'm adding it to static meshes in the level. They're not BPs.

So they don't have a parent.

[zealous moth]

SMs can use ACs?

never knew that

[ionic quiver]

Yeah absolutely. You can add them to anything. 🙂

[zealous moth]

hm, try tags then?

and use a manager

find all actors with tag

and add AC

[ionic quiver]

Oh, like create a BP to do it? Theoretically could work. Thanks for that.

[zealous moth]

yeah, or use a manager in general to spawn them, after spawn is done, assign stuff. Or do it as you spawn them

[ionic quiver]

Also I'm using ACs on SMs so I can add animation to some and just house that animation in the components. So if I also need to add it to other things I can. 🙂

[fiery ridge]

How can I decide which of the items in the vector array is closest between 2 points BUT in the navigation path?

[bleak gate]

Is there a way to force a texture to re-load at runtime?

I'm adjusting the texture parameters to a Texture2D variable using the set parameter nodes. The parameter values DO change, but the changes don't take effect unless I click on the texture itself in the editor menu.

[near wolf]

Hello guys

Can someone help me with this? This is what I'm trying to do :
Instead of activating component, or spawning component, I created ANiagaraActor class which I spawn as an actor.

[oak fable]

hey there
im adding a reference of my spawned AI to a array i add them as Unique
and when that ai dies i try to remove if from the array but it doesn't work
any ideas?

[queen dagger]

https://i.imgur.com/1yDw7oi.png

i ahve this widget

[frosty heron]

what do you mean by it doesn't work? Are you saying the reference still lives inside Animal?
Also this is a little confusing, why are you running on server for death events?
The server should be the only one that need to call the function.

[queen dagger]

i want the image to change to different words when damagea is taken

[frosty heron]

Server RPC is used by client to Run something on server, if you are already the server don't need no RPC

just make sure the logic runs in server side with switch has authority

so only server runs the logic.

[frosty heron]

When damage is taken -> Set Text or change image or what ever you want really

[queen dagger]

is there a way i can store different sprites in the same image and have a switch randomly use different word images and locations to add a bit of randomness

i have it working already i just want to know if there is a way to spice it up without creating 10 dif widgets

[oak fable]

so this is a ai manager not the ai it self
and yes the reference is still inside it and it returns false when i remove it

[frosty heron]

the AI manager should only live in the server, client have no business and the call to Server RPC is confusing here

[oak fable]

still dont get what you mean
the ai manager work only for the server

[frosty heron]

What I mean is Server RPC on an AI death event is reek

death should be something that only server handled

hence your server call rpc sound totally like a mistake

[oak fable]

so the AI death is only used to remove the reference from the array nothing more in it
that is not the actual ai death event

[frosty heron]

1. Play only as listen server
2. Debug

Observe the array in server machine only. What gets added, what is being send, and what is being removed

[oak fable]

okay i will see

[frosty heron]

and get rid of that server RPC since you said AI manager work only for the server. So I am also assuming that the actor should NOT be Replicated so it doesn't exist on client if you spawn it at run time.

[oak fable]

it doesn't spawn at runtime

[frosty heron]

How do you spawn it? are you 100% sure that the client don't have instance of it?

[oak fable]

i spawn it on the level

[frosty heron]

that will exist for everyone then, including the client.

[oak fable]

that like a base manager for the ai on the level

[frosty heron]

AI is server stuff

[oak fable]

i use it for spawning and managing the ai

[frosty heron]

ok but you are running the logic in every one machine, including client

tldr, you don't want it to exist in client machine

[oak fable]

okay so what should i do

[frosty heron]

don't spawn it for clients?

many ways, at begin play if not server, destroy self is one of the method

[oak fable]

hmmmm

[frosty heron]

what's the point of counting all the animals in the world on every single machine?

afterall only the numbers in the server is the one that matters.

[oak fable]

i get your point
so that's how i should do it you mean

[frosty heron]

that is one way

not a fix to your current problem but sure as hell making it easier to debug

I don't know if there's a way to debug only for specific machine in blueprint, I know the cpp people can do that using IDE

[oak fable]

i still can see client there

[oak fable]

and yep that doesn't fix my problem

[frosty heron]

print string before destroy actor

if client print it, you are probably fine

I don't know how those debug gets populated, probably before begin play

once you confirm that the client prints before destroy actor, carry on with debugging your references

[oak fable]

yep its fired

[oak fable]

i did debug my reference and both are the same but still wont remove it

[frosty heron]

show how you debug it

print string prefered to me, watch and debug is a bit buggy

[oak fable]

okay one sec

[remote rapids]

i need help

now if i go to the desinger and add binding

i dont know what to do here

how i display the Add Currency function to display here

[remote rapids]

this is the binding of that

[oak fable]

thanks mate i got it fixed was a weird bug

[dawn gazelle]

If this is all in the same widget, you'd just need to feed in the "Currency" variable to the "Return Value".
A binding will automatically update the display every frame fro you.

[oak fable]

you can do set text function for that currency text

[frosty heron]

@dawn gazelle Do you know how to attach debugger to specific game instance , i.e for one of the client

[dawn gazelle]

You need to make sure you're not running under one process (I think), then you should be able to select it from the instance drop down near the play button when looking at the game instance blueprint.

[frosty heron]

much appriciated

but anyway to do it through IDE?

[dawn gazelle]

Ohh.. uh. Not sure on that one.

[frosty heron]

I c, thanks anyway

[thin panther]

Yes, just launch it and attach it. In the debug menu there's an option for "attach to process"

[frosty heron]

awesome = )

[remote rapids]

like that?

[frosty heron]

You've been doing random stuff for a week :S, please just learn references
@remote rapids

[oak fable]

wanna jump in a call i can show you

[remote rapids]

i am trying bro and i am learning us well
i dont know this stuff and i am trying
you know it so that easy for you to say.
i create and learing in the same time.

[remote rapids]

yes that will help thunks

[oak fable]

okay send a dm and call im waiting for you

[frosty heron]

it's not easy for me, it was hell before and still is now. But what I am saying is instead of randomly do things, it is better if you understand the basic principle that you need which is to reference object.
Once you understand the concept, you can apply it everywhere.

[thin panther]

There's a great video pinned here on references and blueprint communication

[frosty heron]

I can tell you that your core issue is that you don't understand reference

[queen dagger]

cold summer be right on this take the time to learn the core ideas thats how i learned with 2d pixel based stuff

[frosty heron]

not trying to be a d*ck, but if you copy paste code or get help but fail to understand what it's doing. You will run into the same problem again.

the answer is literary given already by Datura.
Get the currency where ever it lives -> Connect it to the return value

[queen dagger]

the time also to see results can take time too

[frosty heron]

if you can't do that then you will need to know what is reference

[thin panther]

It really does help to just break it down into simple terms and see if what you're doing in simple terms fits with that.

For this instance you need a widget to display how much currency you have. So you want to bind the currency to the widget. So you want to know what owns the currency, and ask it how much there is. Nowhere there does adding currency fit into it.

[lethal pollen]

If it doesn't stop at breakpoints, how can I know what it is happening? I have double checked that IMC_Default has been loaded.

I don't see any warning or error message in the output log.

I've solved adding this:

Thanks.

[mild jacinth]

question

[frosty heron]

You don't have to do this by default unless you have disabled the input somewhere.

[mild jacinth]

when duplicating animation blendspace 1D, and then assigning the duplicated file another skeleton, why is it that the original blendspace also changes its skeleton?

[lethal pollen]

The Blueprint class is an Actor which inherits from a C++. I haven't disabled the input anywhere. Maybe the AActor C++ class has disabled somewhere.

[frosty heron]

I see, that might explain it. I think by default controller should have input enabled.
So I guess another question is, why are you enabling input on some actor?
Is this your player character? normally you want it to be a pawn or a character class

[lethal pollen]

It's a Tetris like game, and that code is in the class that represents the falling block. To move it left, right and speed up falling.

[frosty heron]

I personally would just move the input logic in the controller then

but you do what you have to do I am also still learning so take it with a grain of salt

[lethal pollen]

I thought to move it to the controller, but get a reference of the falling block would be hard (or mess up the code). I'm learning also, but if I have to refactor the code it would be easy to do it.

[obtuse kiln]

So I'm using an event dispatcher on the player character to tell enemies an integer that's my Player Combat State, 0=nothing, 1=parry, 2=block, 3=dodge, so that I can branch from int when they attack me and have them hit/stagger/ripostable/whiff

anything especially dumb about this approach leap out to anyone? I've no clue what I'm doing.

[thin panther]

You don't necessarily need to, you could just broadcast that the input is pressed with a dispatcher

[lethal pollen]

With a dispatcher? This is something I don't know how to do it yet.

[thin panther]

An event dispatcher. Basically anything can have a dispatcher, and broadcast something happened. Other things can bind an event to it

[ionic cypress]

For more readable, I suggest you using enum rather than int though.

[thin panther]

So in this case your tetris block that's falling would bind to the dispatcher on the controller.

The other method of getting a reference would work fine too mind you, but this let's multiple things listen in without being connected necessarily

[lethal pollen]

Thank you.

[lethal pollen]

The reason the enable the input on an actor is that actors can not receive the player input.

[frosty heron]

I know, normally you want to enable input on things that you posses (Your character and controller)

but you are doing Tetris so maybe that's okay or like Cuppa suggest , might be better to use dispatcher

[lethal pollen]

OK

[obtuse kiln]

How would I go about that? Looking at the enum dropdown in inputs has me completely lost. At a guess, do I set up the enum I want to use somewhere else?

[ionic cypress]

Yeah, you need to create an Enum type first then reference it. You may do it in blueprint or C++, but suggest doing it in c++ if you could.

[obtuse kiln]

kk, I'll google the basics. Thanks for the tip!

[oak fable]

yeah i can see he had a lot of stuff in the wrong place but he is getting there
i showed him what was his issue and what should be the better way of doing most of what he have

[tough creek]

Is it possible the have 2 loops, 1 within the other, where the 2nd loop has a break? I'm finding that the breakpoint seems to exit both loops.

[obtuse oriole]

how do I duplicate objects? I have rectlight for my hallway that I made a actor so that I can use Instanced Static Mesh to further optimize it when I have to make a very long hallway. I can't seems to find a way to duplicate the rectlight anywhere so unless it is really not possible or is possible but impractical just let me know

[lethal pollen]

How can I add a parameter to an event dispatcher?

Here:

I think.

[twilit granite]

Let's say I have a Hero Selection screen.

Is a good practice to spawn all buttons at PreConstruct to have a preview in Design?

Or is better to use the default construct to do it?

[obtuse oriole]

I think you already found the solution

[glad skiff]

Hello ! my game is crashing with this error : can someone maybe help me <3 thank you so much

[lethal pollen]

Yes. Thanks!

[primal berry]

Fast question. Letter spacing is one thousandth? For example letter spacing = -150 so I must -150/1000 and then i can perform some operation? On the channel UMG nobody reply 😦

[tepid hornet]

(sorry for repost i put it in the wrong channel)

so I have a character with flipbooks for both left facing and right facing running animations, jumping animations and idle animations, because the character is not symmetrical. I want the flipbook to change to the correct animation depending on the direction the character is facing and what the character is doing, rather than just flipping the flipbook 180 degrees to change direction.

I also want to have the character change appearance to a special power up version when a button is clicked. I have all the flipbooks for this version too, just don't know how to set them up.

how would i do all of this? i am a bit of a noob sorry ._.

[faint pasture]

What have you tried?

I don't know much about flipbooks, but I'm assuming that somehow somewhere, you have a bit of code where you select which flipbook to show. So that's where you would check if it's facing left or right, and also check if it's the power up version or not.

[frosty heron]

It shouldn't. Show your code.

[tepid hornet]

that's what im trying to figure out how to do.

[tough creek]

I think I fixed it, had a node going off the wrong way, thanks.

[tepid hornet]

i have the default axis rotation for when my character is moving another way, but i havent got it to change flipbooks. it basically just mirrors it

[remote rapids]

i need help

i wanted to keep music between levels so i did that

[remote rapids]

this is a game instance blueprints

and in my main menu i did that

all works good

if now i go to another level the music is keep going all good

the problem is that for example lets say
main menu is A level
and the other level is B level

so i go from A level to B all good the music is good
but i have a return button to A level.
so When i am on B level and i want to go back to A level so the music, its sound like it duplicate it self and that not sound good.

how to fix that?

[dawn gazelle]

Check to make sure your "Audio" reference is valid. If it's valid you don't want to create it again and you can then check if it is playing. If it is not, then play it.

@remote rapids ^

[remote rapids]

you mean to check if i can get him ?

here?

how to check that?

[dawn gazelle]

Here.... Before creating, check if "Audio" is valid.

Check if this "IsValid"

[dawn gazelle]

Do a "Get" of your audio component variable. Plug it into an "IsValid" node. Put the IsValid check before Create Sound 2D. Create only if Sound2D is not valid. if it is valid, check if it is playing. If it is not playing then play it.

[zinc basin]

I am following this tutorial on how to make magic projectiles. This blueprint here is living in a parent actor and all child actors are going to be each ability projectile. However, I set up collison but the project still goes through stuff. I followed this guys blueprint to the T but not sure what's going on. My running guess is that it may be the particle effect I am using that occurs when the projectile detects collision and disperses. Not sure if that is the case.

I'm pulling the impact effect from

Essentially, the projectile isn't detecting collision and initiating the impact effect

[dawn gazelle]

Check your collision settings.

[untold fossil]

Hello. Does this setting do anything? Changing it to 9000000 or 0 gives exactly the same result. Nothing seems different whatsoever. What I tought this would change is the stopping force that counteracts falling into a fluid. Isn't that what terminal velocity means? 🤔

[dawn gazelle]

Google'd: the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

[untold fossil]

Yeah indeed. So changing this value should impact how fast you decelerate when falling through the physics volume, no?

But from what I have tested, it does nothing of that sort. In fact, it seems to do nothing at all.

Maybe it's bugged in 5.4?

[remote rapids]

where to connect the return value?

[untold fossil]

Into a branch

[dawn gazelle]

No. It would impact how fast you're able to move through the physics volume while falling. It works fine for me in a 5.4.2 project. Set terminal velocity to 100 and they slowly drift when falling in it. Outside of it the character falls at normal speed.

The speed change is for all intents and purposes instant.

[remote rapids]

?

[zinc basin]

Looks fine on my end to my knowledge.

[dawn gazelle]

"Generates Hit Results" on your box collider for example, making sure its set to "blocking" most channels you want to hit?

[trail kestrel]

Hi guys, I'm trying to get The third person character BP cant seem to find the quest dailog holder (this is a small box on the HUD UI). It's variable box is ticked and does appear without problem on the gamemode BP but its just the character BP that i have this problem with.

[zinc basin]

Yes I believe it's set to BlockAll

[dawn gazelle]

Compile the HUD Widget that contains this property and then try compiling the Third Person Character again.

[remote rapids]

? ?

[trail kestrel]

Your a life saver, my student was on that for like an hour, much appreciated it haha

[zinc basin]

On Event Dispacthers I added an OnProjectileImpact. Added those inputs.

[trim matrix]

where would be the best place to call the pause game would people say

would it be better to go from PlayerCharacter -> HUD -> pause game stuff or PlayerCharacter -> GameMode -> HUD

[wise ravine]

Which node looks for both variables to be false?

[dawn gazelle]

Not to be confused with...

[dawn gazelle]

I'd only go through Game Mode if there was something speciifc about pausing that the GameMode would need to control.

[lofty rapids]

"and" and "or" are fairly self explanatory, not is just the opposite

[trim matrix]

well game mode has a pause game function but not sure how deep that runs

if I set it paused will my menu widgets all freeze etc or still work as normal

[ruby cobalt]

ah, and how do i tie them together if

[wise ravine]

thanks

I thought there was a more specific node that outputed the same result

but that should work fine

[primal berry]

😄

This is an AND logic gate. Datura explained you how it works

[wise ravine]

oh this looks useful

how do I know which node performs which 1 of these?

[trim matrix]

how will this be usefull in unreal?

[primal berry]

AND ==

Logical value

these are basics of computers and programming

[trim matrix]

ofc

[primal berry]

you have logical gates like AND, NAND, OR, NOR etc

and nodes are similar in 99% to logic gates

[lofty rapids]

boolean logic is fairly universal

[trim matrix]

and more

[trim matrix]

well everything is bits so ofc

[primal berry]

😄

[queen heron]

would it work the way I would expect if I get the forward vector from a Find Look At Rotation?

actually nvm, forget that question 😄

[wise ravine]

why not 100%?

[primal berry]

Logic nodes in Blueprints are built to mirror the logic used in electronics, allowing you to create simple algorithms. This solution makes programming logic easier to use and apply, especially for people with experience in digital electronics.

[wise ravine]

Right.

I guess that explains it

[primal berry]

If you want to learn more about it : https://en.wikipedia.org/wiki/Logic_gate

[fresh nacelle]

Hey folks, I have a question about flow control in blueprints. I want several gates in my blueprint where, whenever one is opened, all of the others are closed. What is the most efficient way of doing this without generating a ton of spaghetti wiring? Or is the spaghetti inevitable?

[wise ravine]

I do, thanks 😄

[queen heron]

that would be the "Switch On" node

its not technically the same as a gate (multiple ins and outs)

[mild rapids]

how might you shoot a ray in the direction the left gamepad stick is facing? e.g. if i push the joystick up, it shoots directly above the player and its facing left the ray also shoots left

[queen heron]

but its used to execute a blueprint setup depending on the integer or enum value

[fresh nacelle]

the problem is i want the functionality of a gate in that I want to send messages through the gate that are unrelated to the ones that open and close it if that makes sense

for example: I press 1 and WASD move a box around, I press 2 and WASD move the camera around

[zinc basin]

@dawn gazelle My issue is solved: It was a combination of 2 things. The box collision wasn't my root and I had collision on my static mesh that was conflicting

[queen heron]

there's also the select node that also accepts any type, but its a function node meaning you cannot connect execution pins to it

it gets a value of multiple ins and shoots only one out with the respective in value

[wise ravine]

Hey can anyone help me understand why I'm getting an infinite loop here?

[fresh nacelle]

Your do once is not wired in

[wise ravine]

Wait mb, wrong code

^

[fresh nacelle]

interesting...

[queen heron]

it fails to get the data of the reference

its not an infinite loop also

make sure "Game State" or "Default Scene Root" are valid

[wise ravine]

how would I do that?

[queen heron]

how are you trying to get them?

which is which?

like which is the player for example

and which is the actor

[wise ravine]

the player isn't involved in this script

It is a BP_train, and BP_Station which has a hitbox

[queen heron]

I said as an example

[fresh nacelle]

So if I set a variable based on the "mode" I want to use then send execution through a switch on based on Getting the "mode" I could get the logic I'm looking for potentially?

[queen heron]

yes

[fresh nacelle]

Sorry for the bombardment haha

appreciate your help

[queen heron]

there's a lot of flow control methods

btw, when you talk about flow control, some would understand that you're working with loops

is that what you're working with right now?

[fresh nacelle]

yeah just trying to avoid 50 wires with sequence nodes

No, not for this particular task

[trim matrix]

btw, everything is 0 and 1, that's just it

it's 100%

[fresh nacelle]

just trying to route execution in the most efficient way possible when receiving OSC messages

[queen heron]

osc?

[trim matrix]

Ontario Securities Commission

...

[queen heron]

hmm

[fresh nacelle]

Open sound control, basically a protocol for sending and receiving messages

like a modern version of MIDI

[dawn gazelle]

Your infinite loop is something happening elsewhere.

[fresh nacelle]

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

[wise ravine]

uhh am I dumb or is this 'do once' executing more than once?

[wise ravine]

you mean here?

[queen heron]

no

thats a macro

[wise ravine]

yea thats what i thought too

[wise ravine]

^?

[queen heron]

the error log points you to the location of where the problem happens

[dawn gazelle]

Yea that is actually it.

What I noticed is that the instance keeps changing up here giving you the appearance like it keeps executing the do once over and over, but really, you're having a whole lot of instances colliding at the same time.

As for why it's throwing an infinite loop, maybe it's just too many collisions happening all at once? I'm not sure.

[trim matrix]

bruh lmao

you have a breakpoint, it stops running

[primal berry]

I wanted to feel like Einstein for a while 😂

[wise ravine]

Oh yes you're right. Why is that happening?

[dawn gazelle]

You have a whole bunch of them spawned, and they're colliding which is triggering your breakpoint.

[primal berry]

WHAT A SPAGHETTI JESUS!!!!

[trim matrix]

I smell something wrong here

[wise ravine]

yeah lol

[wise ravine]

the code eventually spawns more of these stations

which have more hitboxes, so i think somethings wrong the the location of where I'm spawning the stations

[trim matrix]

the last time I checked your code, it was wrong but was working somehow...

[primal berry]

The most real reason why C++ is 10000000000000000000000000% better than BP

[wise ravine]

whys that?

[primal berry]

I love c++ i want to marry with it

[trim matrix]

then dont come here

[wise ravine]

i think that is the case with most of my code lol

[wise ravine]

Blueprints is a child of C++

[primal berry]

more readable code and I think that generally you have more options

[trim matrix]

no, python is a child of C++, bp is just a young young child lol

[wise ravine]

true

[dawn gazelle]

I wanted to see how long it took C++ to run a for loop of 4 billion iterations of setting a bool with a random value from a stream. It took 0.00007 seconds. (I may have had the loop hooked up wrong... but even still, it's faster in C++)
I then tried to do the same thing in blueprint, and even with increasing the infinite loop detection to the max (2.4 billion) it wouldn't even go that high, and testing with 1 million loops, it took a whopping 8 seconds.

[primal berry]

BP is handicapped child of c++ and python

[fresh nacelle]

this is working great...not sure why i was overcomplicating it

[dark drum]

I'm surprised they haven't made more performant for loop yet for BP. The macro version is slow when you get to high interation counts.

[queen heron]

further proof that its best to work with c++ than blueprint

[dawn gazelle]

Not sure it could be made any more performant sadly D:

[queen heron]

the reason for that is cause of all the things they HAD to put in the code for the node to work in blueprint

[dark drum]

Depends on what you're doing. You wouldn't choose to use a jumbo jet to travel 5 miles. 😉

[queen heron]

yes but still

[dawn gazelle]

If I could take a teleporter I would <_<

[lofty rapids]

ya bp just breaks on big loops but you can split it up over ticks

c++ all the way

for loops and probably maths as well

https://www.youtube.com/watch?v=V707r4bkJOY

its really significant and noticeable

[dark drum]

for loops do run faster in standalone and packaged builds though. (around 60%) Granted still not as fast as C++.

[queen heron]

yes cause when you build your project, its all binary

making it easier for the computer to read the code

[lofty rapids]

because it has to finish in one tick

if it doesn't it craps out

i tried it with c++ it just haults everything and finishes

[spark steppe]

yea, because it has origins of python in it xD

[trim matrix]

C?

where are we now

[lofty rapids]

it's nice to use bp and c++ together they really compliment each other and having functions available to blueprints is really a huge performance boost in a lot of cases

jus the downfall of going all bp, theres just some things you can't do

[trim matrix]

not really tho

[lofty rapids]

well the for loop is just one thing

[lunar musk]

How can i remove an element from array without changing index?

[lofty rapids]

theres more like sort

[trim matrix]

there's prob a way to enable threading in bp and make it run on multiple thread

it's just that people dont go that far in bp but it's possible

[lofty rapids]

when you remove an element from an array, the size changes and all the indexes refresh, whats the problem ?

[lunar musk]

I have an inventory

[trim matrix]

all the index refresh? how do you know that

[lofty rapids]

because thats just how arrays work

[trim matrix]

no lmao?

[lofty rapids]

the index is removed

and the order is set 0 to end

or it's just shifted

[broken badge]

Does anyone know an alternative for the Asset Registry, that would work in a packaged project, that would allow me to get a folder's contents

[trim matrix]

what??? when you delete something from an array, it depends if you are talking about a vector, array, or list or map but all of these are different and in pur C++, it will not change by itself

[tough creek]

I'm trying to work out how Make Random Stream works.

When I use the random float in range node, it works well, but when I use Random Float in Range from Stream (so that I can have re-producable, random, results), the return value is always 0.

[lofty rapids]

when you delete from the array the indexes are reset it's how an array works, it's why your not supposed to delete from an array while your looping it

[dawn gazelle]

Your Stream needs to be promoted to a variable. The variable then contains the "State" of the stream, allowing you to make further calls using that stream.

[spark steppe]

@lofty rapids don't even try to argue with cat

[trim matrix]

?

[lunar musk]

This is the problem

[spark steppe]

also only the indexes after the element you delete change, but well (and the SAME applies to C++ TArray)

[lofty rapids]

i mean i'm not arguing i'm just saying how arrays work and it doesn't matter what kind they are

it's an array is an array

[trim matrix]

an array at core doesn't do things by itself

[spark steppe]

shut up

[bleak gate]

Is there a way to force a texture to re-load at runtime?

I'm adjusting the texture parameters to a Texture2D variable using the set parameter nodes. The parameter values DO change, but the changes don't take effect unless I click on the texture itself in the editor menu.

[trim matrix]

how am I wrong

oh no, since it's made by the standard library and implemented by them, not automatically doing that.

[lofty rapids]

i kind of see whats going on here, your saying it should of stayed and gone to the first open slot ?

[spark steppe]

no one here cares about how C "Arrays" work

so the whole argument is nuts

[lunar musk]

Yep

[trim matrix]

I do

friend

[spark steppe]

then go on a discord where they care about C

you're just confusing people with this

[tough creek]

Thanks!

[lofty rapids]

when you remove from an array it doesn't just null the index and thats still open, the length changes

[broken badge]

Looks like you need a way to store the index for anything still in the inventory before rebuilding it

[broken badge]

Ah, ignore me then

[dark drum]

I wouldn't use the index of the array to dictate the slot it should be in. You probably want to use an int point to denote the x and y in the inventory grid.

[lofty rapids]

i would create an array of your inventory size maybe ? and when you remove an item just make it empty, then you can search for empty slots

[spark steppe]

or set the array element to nothing, instead of removing the array index

[primal berry]

IDEA ACCEPTED✅

[lunar musk]

I make it empty with set array elem?

Yep

Clear it's not a good idea

[broken badge]

Damn, too slow 😅

[lofty rapids]

you can do set array elem, what are you storing in the array ?

[trim matrix]

see, then the array would have empty slots... meaning that if you delete a slot, it shouldn't actually remove it but just set it has empty so when you loop back in it, you know its empty and can add a new object into it

[lunar musk]

hahaha np

[lunar musk]

struct w iteminfo

[broken badge]

I was sure there was a way to empty an index while keeping it as a valid index

[primal berry]

In constructor init an array with for example 36 elements and they are all nullptr

[trim matrix]

in the struct, just have a bool, IsEmpty

[lofty rapids]

so when you do set array elem , you should be able to just not set the value, then maybe do an isvalid check for it's if empty

[lunar musk]

i'll try

[lofty rapids]

not actually sure if that will work but it's worth a shot

[lunar musk]

thx

[trim matrix]

the isvalid check depends on what you do it...

probably on a proprety of the struct or just use a bool IsEmpty

[timid rock]

Dumb question - if I have a data asset class with multiple subclasses, can a field of a pointer to an instance of the superclass be set to one of the subclasses? I know the answer's probably yes I've just never really thought of using data assets in that way

[lofty rapids]

then you would need to have a bunch of structs and alter them you couldn't just add a struct to it

[dawn gazelle]

Yes if I understand what you're asking right.
ie if I had a primary data asset reference of type ParentDataAsset, I can store DA_ChildDataAsset in it.

[lunar musk]

So how can i check for empty slot?

[lofty rapids]

show you set array elem

did you just not set the value ?

[trim matrix]

? wut

you have an array of struct, the struct is a custom type which should represents 1 slot

[rotund harness]

Does anyone know why blueprint code might break if I use draw debug in a line trace? I make use of scene capture components and other stuff like that but still it's weird

[lofty rapids]

i was hoping to be able to put in structs, pull out structs with isvalid

[trim matrix]

the moment the struct is a correct class, it will be valid

[lofty rapids]

loop through the inventory array and check is valid, if it's not valid it should be empty

[trim matrix]

what's valid
???

[lofty rapids]

the item because not setting is like null or whatever it defaults to

[trim matrix]

a struct isn't null, it will be there, just with defaults params

and a struct isn't a pointer, so no it will not be null

--
Just have a bool, IsEmpty, and check if it is... then do wtv you want with that, set it
(what would I do.,..)

[lofty rapids]

i mean whatever works

[dawn gazelle]

Engage means the class. If the class is empty, then there should be no item in the slot of the structure.

No need to have a bool to indicate otherwise.

[trim matrix]

try it

[dawn gazelle]

Or even itemID....If that's set to ITEM_EMPTY or something, there ya go.

[trim matrix]

that's a enum / maccro?

[lofty rapids]

so if you don't pass anything is it empty or there is a structure there ?

[dawn gazelle]

It should be empty.

[trim matrix]

you have an array of struct, why would it be null?

the struct is valid

[dawn gazelle]

It's not about the array.

It's about the contents of a particular index of the array.

[lofty rapids]

it's like if you have a function and an input, if you don't pass anything its empty

it's how i null interaction actors

[trim matrix]

IsValid(array[1]), it will be valid in all cases

[lofty rapids]

if it's empty there is a way to check if it so, i'm just not sure what that is i thought isvalid

[trim matrix]

it's not empty lol, there's an empty struct with defaults params

[lunar musk]

i think i'll try with invalid class

[dawn gazelle]

(except I'm pretty sure you can't check if Array[1] is valid with a structure array.)

[lofty rapids]

well it was worth a shot

the only other way would be like mentioned a boolean, but that means you have to edit each one specifically

[trim matrix]

when you drag the item off, set it to true, when there's a new item, set it to true to the correct slot... nothing more
check when needed...

[open crypt]

I have a bunch of static mesh bottles that I need to destroy/swap out a particle emitter when they are shot. I'm trying to use some type of tag but I want it set on the static meshes themselves, that way. But I don't see a tag item in the details - Is the only other thing to make an array of the materials and do a material check to determine if it is a "Breakable bottle" ?

[lunar musk]

So with bool on struct, i set true when drop an item, and then when i pickup i set to false

?

I think that it's the best way

[dawn gazelle]

Two options with these two variables in a structure.

[trim matrix]

hey, i have this star door setup, ignore the rocks theyr not apart of the blueprint, but i wanna make it so when the player walks into the collision box, a ui prompt pops up and then the door checks if the player has enough stars to unlock based on their total star count, if they do it lets them press an input to unlock and make the door model itself no longer visible, as im planning to add a level warp trigger behind the door at some point, and if they dont have enough another promt will pop up saying they dont have enough stars. ive tried setting it up like this, but im kinda lost not rly sure where to go from here

[dawn gazelle]

No need to complicate it further by adding more variables to your inventory structure.

[lofty rapids]

so i guess i would in this case compare to the defaults like a boolean or something makes sense

[trim matrix]

well, when picking it up, you loop through the array to find the first empty slot ig, so like this:

for(all slots) {
if(currentSlot.IsEmpty == true) {
currentSlot.IsEmpty = false
Add to inventory
}
}

and you think that an ID system is easier than a bool?

[dawn gazelle]

He already has these variables in his structure.

Adding "IsEmpty" is meaningless if he's using these other variables as those variables could potentially tell you if the slot is empty or not.

Depending on his set up.

[trim matrix]

ofc, but who knows he had a class variable?

[trim matrix]

as I said, he must validate with something IN the struct...

[dawn gazelle]

It's all the way back up there.

[trim matrix]

@dawn gazelle see here

It's all the way back up there.

[lofty rapids]

so far you got it so the widget pops up when you get the required amount of stars ?

[trim matrix]

but class is the way to go here

unless you make child items

[dawn gazelle]

And....? That's what I'm saying.... He already has some things in his structure he can validate against without having to add a bool.

[trim matrix]

should the find by id, be a hash table function for faster iteration?

[trim matrix]

the widget dosnt appear idk why

[lofty rapids]

do you get any errors ?

[trim matrix]

no

[lofty rapids]

you can test if the true branch is firing with a print string

[trim matrix]

it's kinda preference but it looks cleaner in my opinion to have a bool to use just for that :3

[spark steppe]

that tells a lot about you

and why you shouldn't give advice here

[trim matrix]

?

I would create a function IsEmpty that valid it for me...

[lofty rapids]

[trim matrix]

the branch is failing when entering the collision

not use IsValid(and hard code the value here of the class)

struct.IsEmpty()
ez :3

[spark steppe]

this is #blueprint

[lofty rapids]

it should only be true if the one variable is >= to the other

[spark steppe]

structs can't have BP methods

[lofty rapids]

the collision is running tho ?

[trim matrix]

yea, but the ui isnt appearing

[lofty rapids]

try to hard code the class, see if its the variable your using

[trim matrix]

how do i do that?

[trim matrix]

btw, in bigger company and in lyra, they use what I explained...
please read a bit more before saying that I'm dumb..

[lofty rapids]

are you using interact and changing it's value around ?

that variable where you get class ?

[spark steppe]

they use a bool?

[trim matrix]

its just the widget thats supposed to appear

[dawn gazelle]

Which you could still just check if the item class is valid....

[trim matrix]

some kind of function to know if it's valid, either way, it's a bit,...

[spark steppe]

i said that your suggestion to use a bool is stupid

[trim matrix]

should i do it another way?

[lofty rapids]

ok so remake the create widget, and don't use the variable select the class on the node

[spark steppe]

so don't put words in my mouth

[trim matrix]

it is here, since it's a simple problem

[spark steppe]

doesn't justify a stupid solution

[trim matrix]

but in a bigger system, a bool would be a better way to know how it work and ye

[spark steppe]

no it wouldn't

[trim matrix]

its still failing when i enter the collision

[trim matrix]

it would, sometimes it's hard to follow when you want to avoid using bools...

[lofty rapids]

so your math is not adding up you have the required amount ?

[trim matrix]

yea the required amount is 5, ive had way more and it still prints when failed

[lofty rapids]

so your values are off, print string them on the screen when you run it because thats how branches work the condition is false so it go to false

[lofty rapids]

but i think >= is what you want

[fresh nacelle]

Is it slow to use one Interface in too many actors? Is there a best practice for when to use the same interface for a given function vs make a new one?

[trim matrix]

?

[lofty rapids]

are you saying it fails off the branch to false ?

[trim matrix]

yes

[lofty rapids]

then the condition is not true

[lofty rapids]

so check that value comming off your player

print it to the screen so you can see what your matching to required stars

just to be sure you got the right variable and the numbers are correct because branches usually tell the condition

as long as it's going to false it's running

[trim matrix]

when entering the collision it prints the rquired amount but still prints off the false of the branch

[lofty rapids]

and required stars prints 5 ?

[trim matrix]

yea

[lofty rapids]

geez thats odd

branches usually work correctly

i would close and open see what happens

[trim matrix]

thats why i was lost lol

[lofty rapids]

that makes no sense they are both integers, its a >= and a branch

if it's not working as expected somethings f'd

[trim matrix]

its still not working

[lofty rapids]

remake the nodes

thats really weird i don't see how it's possible

[trim matrix]

still nothing

[lunar sleet]

Not really, but the best path is to build, test, optimize

[lofty rapids]

i'm really at a loss because it's firing, the cast is succeeding, and the values are correct, but it's not true so idk what say about that

[trim matrix]

is there another way i could set it up?

[lofty rapids]

the problem is if your branches don't work correctly then your f'd

sounds like an engine problem or something

[lunar sleet]

Doubt it

[trim matrix]

my other branches work fine

[lofty rapids]

well i can only go by what they said, and it doesn't make sense to me

[lunar sleet]

Restart the engine just in case but the more likely scenario is user error

[trim matrix]

i did

and remade the nodes, and refreshed them

[lofty rapids]

show the print strings of the numbers

[trim matrix]

this or it actually printing?

[lofty rapids]

print both numbers

and then show it on the screen

[lofty rapids]

yep that variable is zero

not >= 5

so it's false

so maybe you got the wrong variable ?

[trim matrix]

thats my only star variable

[lofty rapids]

well it's zero thats what the print string says

so thats weird

i c you should have 13, what variable are you using to display them ?

[trim matrix]

should i cast it to th game instance instead?

im so confused lol

[lofty rapids]

yes it looks like total stars is your normal stars variable

on your game instance

[trim matrix]

so swap and cast to the instance instead

[lofty rapids]

so you need to get the game instance, cast to it, and use total stars

[heady burrow]

is there a flip flop node but with memory?

[trim matrix]

do i need get game instance?

[lofty rapids]

well you still want to cast other actor to player

so you know its the player that overlapped

jus don't use the variable from the player, get the game instance instead of using other actor like you did, other actor will be your player or whatever collides with this thing

[fresh nacelle]

But in general would the only reason to make a new interface be for the purposes for categorical hierarchy or if you call get all actors with interface on too many actors does that start to bog you down?

[heady burrow]

I think they get reset, oh well, I can just use a ~~local ~~member variable no problem

[lofty rapids]

there ya go, give that a go

[lunar sleet]

Per docs, get all actors with Interface is a slow operation, tho that just says don’t use every frame

[dawn gazelle]

The flipflop It has its own internal logic for remembering its last state. You may as well use a bool that you flip yourself if you need to save it in some way.

[heady burrow]

yeah this is for something I need to implement in a turn based game, probably flip flops are not what I need

I never used them before so I thought it made sense, but no

[trim matrix]

that made the ui appear, how do i make it go away when the player leaves the collision? i tried a set visibility but it still stayed

[dawn gazelle]

Show your code for setting the visibility.

[lofty rapids]

well for one thing your widget should be created somewhere like the HUD, or you can do it on begin play, then you can add to vieport, remove from parent

[lunar sleet]

Idk what you mean by categorical hierarchy but if you have a lot of actors that need the same interface I would just use inheritance.

[trim matrix]

or, well i can do that later, i still need to set it up so the player can only give the input to unlock the door after activating the ui,

[dawn gazelle]

That technically should hide it. Only trouble I see there is every time you overlap, you're adding a new widget to the screen.

[trim matrix]

i dont mind that the doors arent gonna be placed that often

[lofty rapids]

well theres no need to keep creating the widget

[dawn gazelle]

Memory leaks are fun 😛

[lofty rapids]

create it on begin play, or in the hud, promote to variable, and use that variable to show/hide it

[trim matrix]

well, how do i make it so after the doors unlocked it saves, and dosnt try to have the unlock prompt again?

i attempted to just get saving in general working, its still not, idk.

[lofty rapids]

you want it to save, so that when you open up the game it's still unlocked ?

or just save untill the end of the game ?

i would but a bool on the door or actor that is this thing that says unlocked or not most likely

save it in the save game probably done on save

[trim matrix]

like this?

[lofty rapids]

don't add it to viewport, right click the return value and promote to variable

you don't want it to be added to the viewport untill you overlap

once you have that variable, use it in place of the create widget where you add to viewport on overlap

[trim matrix]

so then on event overlap from the cast set that variable to visbale

[lofty rapids]

not from the cast

just use the variable

it is now that widget

[lunar musk]

https://blueprintue.com/blueprint/n3ed1yiv/ This is my pickup item, wh i have to check if is empty?

[dawn gazelle]

@trim matrix ^

[lofty rapids]

what is that all about ?

[trim matrix]

can u explain?

[lofty rapids]

your still creating the widget every time ?

[dawn gazelle]

Just showing you that it works how you currently have it set up - you mentioned it wasn't hiding, but it does hide and show up again.

[trim matrix]

what am i to get from this?

[lofty rapids]

you shouldn't cross execution like that

[trim matrix]

i have one actor set up to make a widget everytime i hit its collision, pretty sure yall helped me w that one too and there wasnt an issue w it then

[lofty rapids]

it's simple you promote to variable

add to viewport on begin, remove from parent on end

[lofty rapids]

so this is on your character ?

[trim matrix]

yea

[lofty rapids]

and show where you promoted to variable

[dark drum]

Does anyone know of any good ways to have collision that the player can't go through but other characters can?

[lofty rapids]

did you drag out of thirrdpersoncharacter to get that value ?

[trim matrix]

yea

[lofty rapids]

but it says error

[trim matrix]

ik

[lofty rapids]

so if you drag out of your player and search for that variable it shows up ?

[trim matrix]

yea

[lofty rapids]

that makes no sense again something is f'd

if you drag out from the player that you cast to, and search for the variable and do a get

it just shows an error ?

[trim matrix]

yea

[trim matrix]

I dont understand the ID comparsion part, what does that do? add it if a slot already has it?

after restarting the engine it stopped erroring, but now the ui isnt showing

[lunar musk]

I'm checking if item to pickup exists on inventory

[lofty rapids]

don't set visibility, add to viewport

[trim matrix]

why?

I thought it would be if the slot is empty

[lunar musk]

because if exist i stacked it

[trim matrix]

okk, you didnt do the logic to add it first ig?

[trim matrix]

and remove from parent on end overlap?

[lunar musk]

ig?

[lofty rapids]

yep

[lunar musk]

What means ig

[trim matrix]

I guess

[lunar musk]

@trim matrix i didn't

i use func pickup item to add

[trim matrix]

now how do i make it so when the ui pops up the player freezes and can input an action to unlock the door, then set the doors model to hidden, set input to ui only? then im lost from there lol, just i dont want the player to be able to unlock the doors unless they activate the trigger

[lofty rapids]

wdym the player freezes ? theres a few ways you can do that, you can pause the game but then all your rotations would stop as well, you can also just put a boolean on the controls that when you switch to false you can't move anymore

a boolean like CanMove or something that you can switch on and off

[trim matrix]

just the player stops so they can input to unloc the door, but can also hit b to hide the ui and restore control

[lofty rapids]

well i would start with a boolean on the player that is CanMove

[dawn gazelle]

I'm not sure I understand the question. You wouldn't need to check if the slot is empty if you're trying to see if the item exists already in your inventory.

[lofty rapids]

then run that through a branch on your movement events

[lofty rapids]

you can do input mode ui only, i'm not sure you can have key events on the widget (tho it's possible you can) i don't think pressing b would work in that case

you can use CanMove or something like InWidget that you can resuse to disable all sorts of stuff

[trim matrix]

dosnt have to be b per say i just wanted it to be one of the face buttons when playing with controller

[trim matrix]

im confused

[dawn gazelle]

If you wanted to check for an empty slot, you'd do it on the false part here. Rather than add to the array directly, you would first try to find an empty slot, and if you have an empty slot, modify that index.

[lofty rapids]

you know a boolean is true or false right ?

[trim matrix]

ye

[lofty rapids]

and you know what a branch does ?

[trim matrix]

yea

[lofty rapids]

if it's true one way, false the other

so if you put a cranch on you movement events

it will only go through true, and only work if that boolean is true

[trim matrix]

which movement events?

[lofty rapids]

the ones you want to stop

[trim matrix]

character movement

[lofty rapids]

when you press keys events fire off and thats your movement correct ?

that usually how it works

you press a key it fires an event

[lunar musk]

And what index i have to check? For each loop index?

[trim matrix]

idk i just have a character movement component, thats what im using

[lofty rapids]

so you don't know how your movement works then ?

because you must have events in your character

[dawn gazelle]

For Each Loop, check if the contents of your structure in that index is empty, if so, that index is your slot to use.

[lofty rapids]

did you use a template ?

[trim matrix]

this?

[lofty rapids]

ya there it is

your left/right forward/back

you want to stop that right ?

[trim matrix]

yea freeze the player for lack of better words, so they can interact w the ui hangon i have a reference

[lofty rapids]

well honestly a simple solution is to pause if the boolean is just too much for you

[trim matrix]

https://www.youtube.com/watch?v=jEDy5AAaFtg&pp=ygUabWFyaW8gZ2FsYXh5IGZlZWRpbmcgbHVtYXM%3D

essentially this, but not moving the camera

[lofty rapids]

ya you don't want pause ig because you want stuff to still be moving around

[trim matrix]

yea

[lofty rapids]

so you need to disable all the stuff that can't be used

and the best way to do that is with a branch and a boolean

i don't know how to make it any clearer tho, the branch will run on true and if you flip the boolean to false it won't run

then you just switch it back

[trim matrix]

i understand a branch and a bool, where am i puttingthem

[lofty rapids]

so the white lines are exec

put them on what you want to disable

for instance that movement that you posted

put it at the beginning of the event

you know the execution flow ? the white lines

[trim matrix]

in what blueprint are u wanting me to do it in, the movement thing i sent is in my player blueprint

[lofty rapids]

you know what an event is ?

[trim matrix]

yes

[lofty rapids]

^

[lofty rapids]

^

[trim matrix]

so copy those nodes into the doors blueprint>

?

[lofty rapids]

definately not

[trim matrix]

as i said im confused

[lofty rapids]

a branch on the event that you want to disable

i can't make it any clearer other than just doing it for you

[trim matrix]

idk, im trying to figure out where u want it at, im making a branch at the end of that event and making a bool that is the condiditon correct?

[lofty rapids]

why end ?

are you sure you know what is happening ?

[trim matrix]

bc idk what im doing tell me where to put it

[lofty rapids]

you got pretty far in your game for not knowing how to use a branch

[trim matrix]

i understand a branch

do u understand me?

where am i putting it in the graph?

[lofty rapids]

why would you put it at the end of the event tho ?

i said a couple times at the beginning of the event

[trim matrix]

bc from what i see theres two open things on the movement nodes

sry

[lofty rapids]

so there is two things running but they run in a line

one after the other

[trim matrix]

so im putting it here?

[lofty rapids]

yep

[lofty rapids]

so does that say ui ?

[trim matrix]

yea didnt know what else to call it

[lofty rapids]

so does that mean if you are in ui it should be true, and if not it will be false ?

run it off of false

this way if UI is false then you can move

[lofty rapids]

and default ui to false

so now when you add the widget to viewport, change that variable to true

and when you remove it, set that variable to false

so when it's in the viewport you can't move

but everything else will work so if you need other things disabled you can just add a branch to that stuff as well

for instances if b does different things depending on if you in the ui

you can just use the branch

at this point i would almost make an enum for state so that things could do multiple stuff but you probably don't need that

[lofty rapids]

ya that should stop your movement while the ui is up

i would clean up those lines a bit

[trim matrix]

so now i need to add inputs for the ui

[trim matrix]

will do

[lunar musk]

?

[lofty rapids]

cast other actor to player on end as well and use that

so that end overlap doesn't trigger if something else overlaps

you want when the character leaves, it'll also clean up some lines

[dawn gazelle]

How are you determining that index to begin with?

[lofty rapids]

instead of comming out of the top cast, use the bottom cast on the two nodes, remove from parent and set

[trim matrix]

kk

[dawn gazelle]

So then it'll be whatever the last index is of the array that was executed. That won't do.

If you want to save yourself some processing time, you can check there if the slot is empty.
First create an integer variable called something like "First Empty Slot Index" that has a default value of -1.
Put a sequence on your Loop Body. The first part of the sequence can be used to handle what were going to do now (determine the first empty slot) use the second output to connect back to the rest of your loop logic.
So the first line of the sequence, check if "First Empty Slot Index >= 0". If true, do nothing further. If False, check if the Index is empty - if it is, set the "First Empty Slot Index" to the index of the loop.

What should happen then is that by the time the loop is finished you've either:
A) Found a matching slot to allow the item to stack
or
B) Possibly Found an empty slot.

By the time you get back down to the "Item Found" branch, you can now check if First Empty Slot Index is again > -1. If not, then you don't have any empty slots, otherwise you can use the "First Empty Slot Index" and place your item in there.

[vernal lotus]

Which one runs faster?
a branch or a single equation?

[trim matrix]

so now i need to make input actions for the ui?

[lofty rapids]

i would also use on remove from parent the bottom cast

[lofty rapids]

ya you need to make the input actions if you share buttons use the boolean to determine what to do

[trim matrix]

its coming from the game instance not the player

[lofty rapids]

your widget reference, your still pulling from the top cast

[trim matrix]

ohh

[dawn gazelle]

Profile it and find out. This is getting into minutia though. I wouldn't bother unless you are finding that there actually is a performance bottleneck here.

[lunar musk]

Like this?

[trim matrix]

how do i setup the inputs to map them to the buttons? i created a back for b and y for unlock the door but theyr not mapped

[lofty rapids]

#enhanced-input-system maybe

i still use the old input system for most of my stuff i just used eis a couple times

[trim matrix]

i do for most of them but i figure i should learn the new inputs

[lunar musk]

After this i have to break it? @dawn gazelle

[dawn gazelle]

Did you not have more logic you needed on item pickup to check if the item was found in the array?

[lunar musk]

yep

[trim matrix]

how can i bind the 0 text on the star door text prompt to the required stars variable?

[dawn gazelle]

So what you have right now is good for finding the first "empty" slot in your array.
Now you still want to find out if the item is in the array - this is why I suggested a sequence - use the first part of the sequence to try and find an empty slot, then use the second part of the sequence to see if the item exists in the array - and if you find it in the array, then you can break as you had it before.

Basically, you're looking through the array once for two different things - for the first empty slot and if the item is already existing in the array.

And you only want to break if you found the item in the array.

[lunar musk]

There we go

[barren tangle]

Hey, how do you manage the order of the spawn of each element of the map?
I want to get an actor of class (on the event begingplay) but i'm not sure that actor already exist?

[lofty rapids]

instead of doing it in a bind or on tick, why not set it when you overlap ?

[barren tangle]

if my actor spawn first the target actor will not exist yet

[trim matrix]

?

[dusky cobalt]

I'm trying to create grid and put it on the landscape. I created GridManager that spawns Cells. I even thought about making every cell shot line trace down, so it finds first location and lays itself there. It kinda works, but there must be other way to actually make grid on the landscape that is also working with the Grid Manager? Or should I separate these 2 things and just create visual representation on the landscape material and lay ''cells'' on top of that, but then how can I access each color under every cell tochange when hovering over it for example?

[lofty rapids]

when you overlap before you show the thing, set the text of that thing to the requires stars variable from the bp, this way if you duplicate the code, you can just change the required stars and it will show the updated one

bind runs on tick so it can be less performant than just setting it when you need to

[trim matrix]

how do i do that

[lunar musk]

Now when i pickup an item i get two copies. @dawn gazelle

[lofty rapids]

so the first thing you want to do is in that widget make the text that you want to change a variable

so cick on it, and at the top right i think as variable ?

just check the box

[trim matrix]

ok it is now

[lofty rapids]

ok so name it something you can remember

or name it something

so that you can retrieve it by name

once it has a good name and isvariable

you can pull off the variable you made of the widget

and get variablename

then drag off that and do set text

[lofty rapids]

i would check for a stack, then check for empty slot

[lofty rapids]

right now drag out from that and do set text

[trim matrix]

which set text tho

[wise ravine]

I'm having an issue where the station spawns the correct amount away (+6,500 from the current station) the 1st time. However the 2nd time the station just spawns on top of the first station spawned. Not sure if that makes sense, can anyone help?

[lofty rapids]

variables, content, set text

[trim matrix]

yea i dont see that

[lofty rapids]

show what you menu looks like

[trim matrix]

yea mine dosnt have that

wtf is wrong w unreal why do i need to keep restarting for things to work?

bc now its showing up

ok i got set text

[lunar musk]

but for what? because i have empty inventory so

[lofty rapids]

that should work now put the set text before the add to viewport

it should work although you may need to use invisbility it might reset but i don't think it does

[trim matrix]

what does that mean

[lofty rapids]

try to set it before add to viewport see if it works, it should

[trim matrix]

it works, but the controls arent set up, so i cant do anything from there

[high iris]

Friends, my 3d math chops are awful, could use some help: I'm trying to determine which direction along a wall a player is looking down. I have the wall normal and an impact point thanks to a line trace, and I have the player's forward vector, now I just need to figure out how to get the xy vector (don't care for z in this case) of the wall along the direction the player is looking in, assuming it's not perfectly perpendicular.

Then I will just apply a -90 or 90 degree rotation on the z axis to that normal wall vector and I should be ok, but I can't quite figure out the sign of that 90 😦 Any tips?

[lofty rapids]

#game-math might know

[wise ravine]

nothing? no one?

[high iris]

Perfect, thank you, will post it there.

[trim matrix]

show more code

[hollow cove]

weird that this doesnt work, have you tried just using a float or vector variable

oh

[wise ravine]

float or vector variable?

[hollow cove]

has to be something in the rest of the blueprint?

[hollow cove]

yes so make a variable thats a float on the left bottom side

[wise ravine]

like what exactly?

[hollow cove]

then add 6500 to it each loop (i assume this is in a loop)

or if it is in a loop you could just multiply the index by 6500

then use that on the x only (right click the location and split)

[wise ravine]

What's a loop?

[trim matrix]

I didnt know there was a loop... can you show it?

[trim matrix]

ok so now i have inputs set up, how do i get them to function with the ui? and the unlocking

[hollow cove]

https://cdn.discordapp.com/emojis/958744762201034813.gif?size=28&quality=lossless

[wise ravine]

hold up, let me clean up some code

[lofty rapids]

what sort of functionality are you going for ?

[trim matrix]

i want once the ui is triggered if the player presses the button to unlock it makes the actor get destroyed and ill put a warp behind it at a later point, but for the b button i want it to just give the player their movement back and make the ui go away

[wise ravine]

(In Game State)

[trim matrix]

but only make it do those at the trigger box that way the player cant unlock a door anywhere

[trim matrix]

when the the event trigger

[lofty rapids]

ok so then you have your inputs and events ?

[trim matrix]

i have inputs, im not sure how to go about making the events for it

[lofty rapids]

in the b key event, just get the widget and remove from parent and switch the ui variable to false

[wise ravine]

In another blueprint (BP_Station)

[lofty rapids]

right click and type the name of it

[trim matrix]

what

what's the problem

oh i did that i mean to make them only work once the box collison is overlapped

[lofty rapids]

does this not throw an error ?

[wise ravine]

Triggers when BP_back (poor name for BP_Train) overlaps a hitbox in BP_Station

[lofty rapids]

just use a branch and the ui boolean

[lofty rapids]

do the same branch you did on the movement events

[wise ravine]

not exactly

[lofty rapids]

you destroy it

then try to use it

should throw saying pending kill or something

[trim matrix]

can you print the value of the vector out of the GetActorLocation?

[wise ravine]

My goal is to destroy the previous BP in the array of BP's

then after it spawns the new BP it will set that as the new current

[trim matrix]

like this?

[trim matrix]

but what doesn't work, is the location not correct?

[lofty rapids]

because you destroy it then try to use it

[wise ravine]

yeah so the first time it works... spawns a station 6,500 uu behind the current station at (X=0.000000, Y=0.000000, Z=0.000000). But the second time instead of spawning a station infront of the current one, it still spawns the station 6,500 uu ahead of (X=0.000000, Y=0.000000, Z=0.000000). And not 6,5000 ahead of (X=6500.00000, Y=0.000000, Z=0.000000). If that makes sense

[undone sequoia]

anyone have tip how to make easy bullet trail ? when I am shooting that white thing behind bullet

[wise ravine]

do you mean i would have to get rid of that actor in the array for the node to spawn the next actor in the array?

or am i understanding that wrong

[lofty rapids]

you destroy the actor

then you try to use the variable

[wise ravine]

ahhh

genius

so i have to get the value before i destroy the actor, and that before i spawn the new one

[trim matrix]

i have this but when pressing the inputs i set, nothing happens

[lofty rapids]

your trying to use the variable you get it from the cast, put the case before the branch, but are your inputs on your character because they should be, or in the controller

[flat coral]

Wait, on ActorBeginOverlap, which of these is which? These both seem to be saying the same thing.

[trim matrix]

wdym

[lofty rapids]

so yu could get the actor location, store it in a variable, destroy, and then use that variable to add to to get the next one

[wise ravine]

still doesnt work but i think thats a big step in the right direction, thanks

I've been staring at the same code for too long

[lofty rapids]

i mean it should work if you cache the position before you destroy

and use that to spawn the next one

[wise ravine]

yup

yeah I didn't plug the new variable in

🤦‍♂️

The node isn't executing for some reason, I gotta troubleshoot that now

[trim matrix]

i did

[lofty rapids]

put a print string see if it's firing when you press b

[lofty rapids]

is this on your player ?

[trim matrix]

DIDNT PRINT

ew why caps