blueprint

[versed sun]

there is a plugin that has a lot of useful shortcuts, one being auto-connect pins

[frosty heron]

Do you know how to use data table?

[random pulsar]

i assume i need a 'wallet' for money i have ,some functions to waste money ,some functins to receive money and functions to get what i want

[versed sun]

https://www.unrealengine.com/marketplace/en-US/product/node-graph-assistant
The User Guide showcases the things it can do

[glass blade]

this looks cool

[frosty heron]

If you want to make shop that sell stuff, you can just use Structs and Data table

[glass blade]

who has $11 to spare )

[frosty heron]

populate the Shop item lists in data table, then the shop keeper can just display information from it

[random pulsar]

i am a noob ,just a beginner

[random pulsar]

https://www.youtube.com/watch?v=RlwSyKW6D-4&t=327s

i found this one

[proper vigil]

Where could I put Talk 2 so it doesn't run at the same time as Talk 1?

[silver bolt]

Not enough context, what are you trying to do more broadly?

[proper vigil]

Dialogue between character and NPC which has two different convo events based on what the objective is.

I had an issue and it stemmed from both events being called from the same time.

[dim agate]

I was trying to make an enemy spawn emitter and when I was testing it in the editor play, suddenly my player character is floating while in the falling animation and is unable to move (can still do actions like fire when clicking). I saved, the closed the editor, and now when I try again the character is now completely invisible but still stuck (still able to fire when clicking). I get this error message.

[heady burrow]

so I did implement this, I checked that the location was only set whenever the tile was detected as different, but still see this "bouncy" effect, what else you think I could try?.

[fallow epoch]

Can I get a more precise output for the Joystick when its using the enhanced input? Im trying to get it to only fire when the joystick his reached almost the halfway point of going down. Right now it fires directly off center of the top axis. I've tried using a less than but there is something weird happening and even when I use a less than for the negative side it still fires at the same point.

Didn't see there was an Enhanced Input channel. I posted it there.

[dapper grotto]

yes, how that is not a built-in thing is beyond me. People say UE is great, because Epic actually uses it to make games themselves, but apparently they don't use blueprints in the process at all 😄

[fallow epoch]

Blueprints work to an extent. You have far more control and access to variables when you code it out.

Not knocking blueprints. Im using them haha. But sometimes you look online for a solution and the only solution is coding..... oof.

[sour crater]

mm

can someone help me make the bp appear to grow on the widget progress bar?

No errors but no grown in the power up

mana goes down

the constant mana tick

and

the reduce mana ofc

any help would be great

shouldnt the bp progress bar work?

wait

imma check something

k

here is my Get BP Function that is binded to the percent of the widget

[elfin hazel]

A useful debug tool is the print string. Print the BP value in that last function to see what it says. Also, did you find out why you got that issue previously? Because if that happens again now, and the ref for some reason is invalid, that BP float will not provide any useful number. That's the first I would check. Print the BP float and isvalid (bool) of equipment component.

[sour crater]

okay ill try that for now

[dawn gazelle]

I think you have the wrong function selected here.

[silver bolt]

y'all, not sure if this is the right channel, but I edited a field in a struct definition, my project crashed and it won't open again, stuck on this... Has this ever happened to you? I'm at my wit's end, tried deleting the saved and intermediate folders, still nada.

[sour crater]

I have a different question for a second involing the same thing.

i made those vars when i was making the updatebarconstant for the widget. does this mean i have to use those vars when calling bp?

[elfin hazel]

Apparently Bp structures can be unstable, in particular if editing them. You could try going into the autosaves folder, find the autosaved struct and replace the one in your contents folder. Do remember to save a backup of the files before replacing.

[dawn gazelle]

You shouldn't need to do this. Use replicated variables and if you want something to execute when a new value is received, mark it as Rep With Notify as that then gives you a function that is automatically called when the value change is received on the client.

[sour crater]

Little simplier terms lol? What do i have to mark as Rep With Notify?

(I'm a novice trying to break into intermediate)

[dawn gazelle]

The variable itself.

[sour crater]

okay so i did that, and i got the string

however, still same results

i need to put the string in a different spot

[raw lantern]

im not able to get the follow target

what have i done wrong?

[raw lantern]

this is a ss of the tutorial
https://youtu.be/ZGQoo9frBUA?si=M0nrd7zdEEkMBObS

[silver bolt]

thank you, I ended up going into git and reverting

[dawn gazelle]

https://youtu.be/ZGQoo9frBUA?t=418

There's a couple of checkboxes you need to do here. If you've done them, make sure you compile your blueprints and try again.

[raw lantern]

yes, i think it was the compile only

let me give it a try

[raw lantern]

okay so, i did EXACTLY like the tut guy then it worked

what i did wrong was, after adding the variable, i didnt hit compile and just check marked the 2 boxes

but when i compiled 1st and then check marked the 2 boxes

[raw lantern]

i was able to get the follow target thing. am i wrong to assume that this is what was wrong

?

[dawn gazelle]

If you don't hit the compile then the changes aren't necessarily "applied" to the blueprint. When you created the spawn blueprint node, it's then reading off the unchanged version which didn't have the exposed variable change applied.

[raw lantern]

okay, that makes sense. thanks!

[indigo lake]

Hello! Got a question here about Bindings in blueprint. Could someone enlighten me on how the OnComponentHit(Capsule Component) delegate works without having to have a "Bind" call to it like in the event lower in the picture? Presumably I'd hook up the Bind Event to BeginPlay or something.

[dawn gazelle]

The top one you'd implement in the actor that has the component. The bottom one you could potentially bind to in another blueprint, or, you could set it up in such a way that you programmatically bind and unbind the event as needed rather than being always bound like in the top example.

[trim matrix]

There isnt much of a difference in the underlying cpp code that is getting used to handle the bindings. The top one is basically just a shortcut epic implemented so you dont have to manually call the binding function.

Just some blueprint editor graph magic.

[indigo lake]

That's the part I was a little confused about. I was wondering if it was just some sort of extra implementation that prevents having to manually lay out the binding. Thank you both! @trim matrix @dawn gazelle

[spring osprey]

So I must be missing something but is there no way to delete a single element from an array in the editor? Seems my only option for removing items is to delete the entire array. Is there a way to resize the array and remove the last x elements instead of all the elements? Context menu doesn't seem to have a remove option

Maybe I'm just stupid or something idk. I'm wondering if this functionality is just not provided in the editor

[lunar sleet]

Some of them have the functionality hidden

[lunar sleet]

Click the little arrow next to each field, should see delete there

[spring osprey]

Ohh thank you so much! 🙏 Wow that was quite hidden wasn't it haha. And duplicate was hidden in there as well

lol i clicked on every other arrow before I even saw the one you were talking about

[crisp gulch]

I have a laser projectile and both a hostile and friendly ship actor, they can both shoot lasers. When the laser hits something, it is destroyed.

I want to be able to make sure that the laser fired from the ship, does not hit the team it was fired from, and only hits the other team. I also want to damage the ship that is hit by the laser. I'm guessing the laser actor should call the damage event of the ship from the laser's hit event, but I feel a bit lost on how to begin.

What's the best way of handling this?

This is what I have for the laser projectile so far

[slender quest]

I'm trying to set up a pre-made spline that I want a spawned enemy to utilise for its movement around the map. I'm having trouble orienting the spline before adding it to the spawned actor, or even orienting it after it's spawned and added to the actor. It just seems like it does not rotate no matter which rotation nodes I use. Any ideas on what I could do here?

If it helps, this is the first point in the spline, and the X is pointing downwards, I want to rotate the whole circle 90 degrees so that the X points to the right

[lunar sleet]

Either cast to the enemy class or use tags

[unborn heath]

hi there, I'm finally transitioning from unity to ue5, which i also put off for the longest time since i did not dare to get used to visual programming but now there no real viable alternative until i decide dabble into cpp.
But enough rambling, the thing i actually wanted to ask about is variables in this case a variable "flashlightOn"[bool] which i can change by pressing 'F' and the visibility of the spotlight is determined by "flashlightOn"
Normally I'd do smth along the lines of:

bool flashlightOn;
spotlight flashlight;

flashlight.visiblity = flashlightOn;

if(Input.GetKeyDown(KeyCode.F) && flashlightOn){
flashlightOn = false;
} else [
flashlightOn = true;
}

But now i've set a boolean "flashlightOn" in my eventgraph but how do i correlate the state of visibilty with this variable?

[noble brook]

I figured out the solution. Basically I needed to find the slope angle, and use some ACos math to build a new transform matrix, then rInterp between current and new based on the normal of the slope. fun stuff. works great and looks good.

Does anyone know how to make a bone look at a hit location? I have the hit location and know you can rotate an object based on a start and end vector (bone origin and hit location), but cannot get a bone to rotate. What am I missing?

[dawn gazelle]

You can do something like this. You can plug in your own flashlight variable in there if you want, and just set it to its inverse value whenever you press the button.

[tiny moat]

A flipflop node perhaps?
A, set flashlight.visibility = 1.
B, set flashlight.visibility = 0.

[frosty heron]

If u need toggle boolean just do a not when setting, that will flip the value

Flip flop is nast because it always remember the state.

Imagine if u want to turn off the flashlight for cinematic or other reason

[small jetty]

anyone know how to get an actor or camera's rotation where it doesnt loop back to -180 after hitting 180? i want it to just continually add forever if i keep rotating one way, and subtract forever if i keep rotating the other way

all these things just loop and dont go on forever im pretty sure

[frosty heron]

If u want to keep adding forever, just add rotation on tick?

Use delta time so it's not frame dependent

[small jetty]

i dont know how i would do that, im really inexperienced with unreal engine

[frosty heron]

Use add rotation node

Or just use rotating component depending what you are doing

[small jetty]

so i would get the last tick's rotation, and then subtract it from the current ticks rotation, and then add the new value to a variable?

[frosty heron]

I would just use rotating component

Add component -> add rotating component

[small jetty]

but it has a constant rotation rate? idk, but the rotation that im trying to get is my player's rotation

[rugged elk]

Hey guys, i've been having a weird bug with my DataTable, it's been working great in the past but now when we fill a field with a class ref, it completely stops the engine from loading. I'll join screenshots of my DataTable and the code of my Row Struct.

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Engine/DataTable.h"
#include "ClassEffect.h"
#include "FItemStruct.generated.h"


USTRUCT(BlueprintType)
struct FItemStruct : public FTableRowBase
{
    GENERATED_BODY()

    FItemStruct()
    {
        Name = FText::FromString("Item");
        Description = FText::FromString("Item Description");
        Thumbnail = nullptr;
        ItemClass = nullptr;
        StackSize = 1;
    }

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    FText Name;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    FText Description;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    UTexture2D* Thumbnail;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    TSubclassOf<class AActor> ItemClass;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    int StackSize = 1;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Inventory")
    TSubclassOf<class AClassEffect> EffectClass;
};

More details :

AClassEffect is a cpp class that derives from AActor and has nothing more, it is just to allow the cpp code to identifie the class
This data table is used to store data about items that will be put in an inventory, basically we got a calss called LootableActor that will look into this datatable for its key and set its others variables to the other field of the row

if you need anything else just ask ! I hope you can understand the context and what my problem is, i've been stuck on this for quite some time and it's currently putting the project at a halt

[lunar sleet]

Did you mean to put all of this in #cpp ?

[rugged elk]

well i wasn't sure where to put it but now it makes more sense to put it overthere (it's the code of my teammate and i assumed it was mostly BP due to the DataTable)

i'll move it right away

[lunar sleet]

They’ll prly be better at helping you with this regardless

[rugged elk]

thx sorry about this 😄

should i delete the other messages ?

[lunar sleet]

No need to be sorry, just trying to get you to the right place

I’m sure it’s fine

[fallow epoch]

Any idea why im not compiling?

[distant hollow]

I have a number of walls generated using DynamicMesh, some intersecting one another.
How do I identify enclosed areas, and obtain those "corner points" in that area?

[distant hollow]

Seems that you have an issue with the GetPlayerCharacter first
Where is this code located?

[fallow epoch]

In the UI

[distant hollow]

This is a UI widget blueprint?

[fallow epoch]

The BP you are looking at is the generic function library

[distant hollow]

What does the error say? No world context object?

Wait, GenericFunctionLibrary, is it by default or was it something you created?

Open it up and compile it to see if there is any error?

[fallow epoch]

I deleted a function in my Hud.

If I disconnect my hud it compiles fine.

Deleting a function caused this.... oof

@distant hollow Ok I figured it out. Im super new to this sorry. But for some reason get player controller was deleted off my hud widget.....

[zealous moth]

is there a way to unload a reference?

[earnest ember]

Question i making a game in uneral engine 5 and I want to do it when player finished level comes to the door if door is blue colour it's safe place if red colour fight monsters and yellow traps can I make it that the colour change rendomly so if player dies it's not the same colour and environment

[fallow epoch]

Look up random number generator UE%

UE5*

@earnest ember

@zealous moth By unload what do you mean?

Destroy? Delete from the entire file?

[zealous moth]

If I make a hard reference to something, it gets loaded into memory. If I no longer want it in memory, how can I unload it?

[fallow epoch]

Look up blueprint interfaces.

They can access variables and data without making a hard reference

[remote meteor]

when the head of the reference chain is no longer being referenced, during a GC, they will be removed
in unreal, memory management is semi-automated, the removal of an allocated memory will only happen on a GC

[zealous moth]

that's the part i am not sure I understand well.
If I have a data table full of hard references, bringing that into play and looping through rows will bring stuff into memory.
However, once the loop is over and I got what I needed, will the rest unload automatically?

or do i need to unload it manually?

[remote meteor]

the data table reference itself is the focus here
for example if you game mode is referencing the data table, the game mode needs to be no longer referenced for the data table to be eligible to be unloaded

[fiery ridge]

Is there any way to extract/find a number in a string?

[zealous moth]

@fiery ridge you can do a string parse and compare to all numericals OR use regex

[fiery ridge]

which one of them?

[zealous moth]

sorry it would be "find substring"

but it's a pain

get regex

https://www.unrealengine.com/marketplace/en-US/product/regex-in-blueprints

[fiery ridge]

I will try Right Chop

and use an underscore before the number

[zealous moth]

regex would be even better

[fiery ridge]

aight ill check

ty

done, its a mess but it works xd

[kind estuary]

Im in a bit of a dilemma here.
Im making vehicles that have different weapons systems, this weapon can be changed on the vehicle.
1- Heavy machine gun. 2- Rocket launcher. 3- Grenade launcher.
So they are attached to the vehicle actor.
But since they are different in shape and size, they are attached at different position offsets.
And they also fire different projectiles, have different shooting speed.
Should i do this all data driven? Create a data table, and then when spawning the BP_Gun, i just get the offsets and shooting speed and projectile from the data table?

Or i create a child blueprint for each different gun type?

[gentle flare]

Hey everyone, how do you get the color of a specific pixel in a volume texture in blueprint?

[summer nexus]

Is there any option or plugin for when you drag out a pin and drop it that suggests the most common nodes? So you don't need to type every time what you are looking for?

[distant hollow]

If they have the same properties but just different parameters, you can just use a DataTable
Otherwise it would be better to create Child blueprints.

Question:
I have a number of walls generated using DynamicMesh, some intersecting one another.
How do I identify enclosed areas, and obtain those "corner points" in that area?

[earnest ember]

@fallow epoch ty

[narrow pendant]

do not talk about pirating software on this server 😄

[frosty heron]

its againts the rule

[narrow pendant]

profiling question:

I fucked sth up and my game thread is taking forever on some frames. WaitForTasks is like 99% of it

any advice on how to read this? how do I go about finding out which task is waiting for what?

[frigid narwhal]

Hey. How can I calculate the turn rate from my mouse so that I can use in in a Transform bone to tilt my character to the sides when I turn?

[dreamy mountain]

How would I get a reference to a trigger volume within an actor blueprint?

[frosty heron]

Is the trigger placed in the editor or spawn at run time?

[frosty heron]

#profiling guys prob have ideas

[dreamy mountain]

Editor

[frosty heron]

You can have a variable of the trigger type in the bp you want to call it. At this point it's not pointing at anything tho, so make it instance editable and expose on spawn. Then you can drop pick it from the scene from the instance you dropped

[dreamy mountain]

Ok

[frosty heron]

Though for trigger, do you need to get a reference to it early in the game?

you can just get it when u overlap with it

[dreamy mountain]

Tbf, that's what I need, I need to know when it's overlapped, but I can't find anything in the actor bp

[frosty heron]

Show your code

[dreamy mountain]

I have none so far for the character blueprint

[frosty heron]

You shouldn't need a trigger in the character blueprint

[dreamy mountain]

I'm trying to make it so when the player gets close enough to the enemy

It turns and runs away then despawns

[frosty heron]

So who owns the trigger?

[dreamy mountain]

I have something like this in the level blueprint but idk if that's the right place lol

[frosty heron]

Nope, don't use level blueprint

you can't get a ref to the level blueprint in blueprint. That makes it a one way communication

So for this case, just attach the trigger volume in your enemy bp

When overlapped -> Check if it's the player that overlap -> Run away

For distance check, you probably don't even need Trigger volume

Just have AI perception to check if it sensed sees the character and check the distance

[dreamy mountain]

I can't, says it can't be attached to a dynamic actor

[frosty heron]

Show code

[keen hedge]

Does anyone know why Get Location At Spline Point in World coordinates always returns a completely wrong location? I tried mitigating by switching this to Local and adding the spline component's world location to it and it's almost correct but still wrong. Are spline components just broken outright?

[frosty heron]

I just did it btw, never heard of that error

[frosty heron]

print screen

Also add one in the bp

[dreamy mountain]

Don't have discord on pc

[frosty heron]

not outliner

GO to your BP_Enemy

Top left, on component tab

hit the + button to add component

add box collision

That will be your trigger volume

[dreamy mountain]

Ah o

K

[frosty heron]

not that I know the answer, but can you give an example of one of the way?

Don't know what is anyway

But WPO is one of the way to manipulate vertex afaik (Rotating coin etc)

Oh, like Soft body?

if there isn't one on the net for Unreal , you might have to write it your own

@trim matrix https://www.youtube.com/watch?v=LwnDh8u5sGU&ab_channel=renderBucket
Maybe this for that use case

[dreamy mountain]

Ok, now I'm back at where I started lol, I can't get the character to move to this box I've got placed

That's the box stored in goal

It gets past the corner barely, then resets its position

[frosty heron]

The A.I will need an AI Controller for it to accept the move node

also need actual navigation

Look it up on youtube on how to setup I guess

Oppps 🙊

[dreamy mountain]

So how would I get it to move there?

[frosty heron]

you get any error in output log?

[hoary junco]

so, something I want to do in blueprints is I want to have a set of 3 pickups in a level, when you pick one up it gives your actor a tag that allows you to do something and the pickup disappears, then when you grab one of the other pickups it replaces the actor's tag and the other pickup reappears.
I've figured out the tag replacing and making the pickup disappear, what I can't figure out is how to make it reappear, any help?

[fiery ridge]

what are you using the tag system for?

[hoary junco]

the concept is it's a stealth game where the pickups change your colour and if you're standing on a panel that shares your colour the guards can't see you, so the tag is to make the guards ignore you

[fiery ridge]

what exactly do you need to make reappear?

#graphics

[hoary junco]

so, I have 3 pickups, a red one, a blue one, and a green one, I want to be able to have the red one picked up then it vanishes, then when you pick up the blue or green one the red one reappears

[fiery ridge]

oh

[hoary junco]

so you can go back to red if you need to

[fiery ridge]

there's a "workaround" i can share with you

[hoary junco]

so is there no standard way to do this in blueprints?

[fiery ridge]

1 sec

that's one way to do it

you dont really remove/destroy the actor

you just disable it and make it invisible

and when you need it back, re enable collision and visibility

[hoary junco]

tbh I don't think I'd have to disable collision, just have it so collision only activates if you don't have the tag of that pickup already

like if you have the tag red you can't interract with the red pickup

[dreamy mountain]

None I can see

[hoary junco]

so how would I re-enable visibility for the red one when I get the green pickup?

[silk star]

I'd go even further than redsid,

have each pickup as a blueprint component. (that way when you want to add further features etc it's easier).

when you trigger the pickup it changes a string variable to the name of the color you picked up. then having an event that fires on the pickup use the node "switch on string" and have it match the name of the string variable which will then make the pickup component reappear

[fiery ridge]

do you have references between them?

so they can communicate?

[dreamy mountain]

Ok so I got it working sort of

[hoary junco]

do you have an example of this? sorry I'm really new to all of this still getting my head around it all

[dreamy mountain]

If I have a destroy actor at the end after MoveTo, it instantly destroys it

If I don't, it skips back to where it started the animation

[fiery ridge]

have you used Switch on string before?

[frosty heron]

Simple moveTo Don't have any Finished call back

calling destroy afterward just gonna delete the actor in the same frame

[dreamy mountain]

Ah

Is there any other way to do this?

[hoary junco]

yeah I have in a tutorial I Was working through to switch a widget's text during a countdown

[fiery ridge]

can you do what Scott suggested

how do you trigger the pickups?

[hoary junco]

this is how I do it currently

and I have a collision sphere around the pickup to trigger the overlap

[fiery ridge]

you could do interface instead

since it isnt a one time/actor thing

[hoary junco]

interface is something I've touched briefly on for opening doors but I'd like for it to be on overlap rather than hitting a button for it since that's actually part of the challenge. There's areas where it forces you to switch by placing a pickup right in the way

[fiery ridge]

u can do interface with overlap too

[frosty heron]

This not gonna do anything

you are destroying already before adding a tag

[hoary junco]

it has worked though I've tested it

[frosty heron]

If you get lucky

[fiery ridge]

you have 3 different colors, and you need to make one disappear when you pick the other one

which means you need a ref of some kind

[frosty heron]

You don't want to destroy a BP and still pray that it runs the code afterward

racing with GC

and destruct

Just have the Destroy Actor AFTER you add the tag

but hey if that works for you, then all the best

[dreamy mountain]

I've tried using an aimoveto but it keeps just looping back, idk what it is

[fiery ridge]

when you say "reappear" you mean spawning the colored thing back again right?

[hoary junco]

yes, when Red is picked up it is invisible and blue and green are visible, when Green is picked up Green is invisible and Red and Blue are visible etc

[fiery ridge]

ok do you have them as references anywhere?

[night bolt]

im sorry to ask again but it's giving me a headache i can't figure out how to fix, any input would be welcome

[fiery ridge]

you could just store their references on your player character and do whatever you want with them

[hoary junco]

I have references to them in the level blueprint

[fiery ridge]

oh no

level blueprints are a big no-go around here

you have 4 objects = player, red, green & blue. they need to communicate with each other in some way

i assume its singleplayer so maybe start storing references on your player char bp

[hoary junco]

yeah it's singleplayer

[fiery ridge]

just do a BeginPlay>set self for reference

[frosty heron]

don't

[fiery ridge]

cast to playerBP

[hoary junco]

yeah I've already been told that but I have yet to hear why exactly.

[frosty heron]

Reason is level blueprint cannot be referenced by other bp actor in BP world. So the communication only goes one way

[hoary junco]

surely there are situations where that would be beneficial though.. granted not in this one but in others perhaps

[fiery ridge]

rarely

[frosty heron]

Sure, but not for gameplay element

maybe to show a main menu at the start of the game

though u can use game mode for that

but hey the Level bp is there

[fiery ridge]

things also become exclusive to that level if you tie things to the level BP

[dark drum]

Does anyone know a good way to handle montages that need items spawning/attaching during them? I know I could set something up to spawn items and attach but I'm trying to think of a system that's easy to handle different montages and items.

[sonic crest]

Notify?

[toxic nacelle]

@hoary junco You can do a "manager actor" that manage this behavior. It's like a "radio button group", you can have a "PickUpGroup" actor that have the references of each of your pickups, with delegates and events, this manager can can make disappear/appear pickups, and the pickup actors are not coupled together

if its a actor component (pick up group component), you can do a vizualizer that show you the pickups that are "linked"

[sonic crest]

Yeah that's the point of the level BP. I mainly use it to make events only for this level, like run a cutscene at that trigger box, sky lights and whatever

[toxic nacelle]

if you have 100 pickups of each color and do this behavior automatically without referencing 300 pickups, you have to do a manager actor for sure

[fiery ridge]

yes but he's storing actor references for gameplay elements, which isnt good because the next level might not work

automation is key

[dark drum]

As in the anim notify get on the play montage node?

[sonic crest]

Yeah that's a no go. Use Game Mode.

[fiery ridge]

we are telling him that, i dont think he wants to do it though xd

[sonic crest]

Or game Instance, I honestly never understood the difference between Game Mode and Game Instance.

[fiery ridge]

game instance persists throught levels

until session is terminated

game mode resets upon level change

[sonic crest]

I guess. Get the name of the notify and do whatever you want

[sonic crest]

Thank you

I never used Game Mode

Just game Instance

[frosty heron]

They have completly different Use case

[dark drum]

That was my initial thought but that would require setting something to handle it where ever I play a montage.

[toxic nacelle]

why don't using subsystem ?

[fiery ridge]

you can save stuff on game instance (like save files, upgrades, etc)

[frosty heron]

Subsystem for?

[toxic nacelle]

to answer the question of Mike MW

[dreamy mountain]

Without starting the new animation, it doesn't even move to the box

[sonic crest]

Yup, I have that for ammo management and health and stuff. Since I want them to persists through levels

[hoary junco]

so I just thought of something, can I call an event whenever a character's tag is changed?

[frosty heron]

Probably, with repnotify. I never tried tho

[fiery ridge]

i really do not think you need the tag system for this

[sonic crest]

You can use a dispatcher

I think

[fiery ridge]

but its up to you

[frosty heron]

You can make your own Setter Function, which then broadcast an event

[rapid helm]

hey folks does anyone know why this rotator returns the same value every tick?

despite the target moving all the time

[frosty heron]

How do you observe the value?

[rapid helm]

I printed it

for every tick

[frosty heron]

That's odd, show how you print it

[sonic crest]

Check with Body and Target if they're referencing correctly

[frosty heron]

You probably want to print the location of body and target too

[rapid helm]

I did this

[frosty heron]

see if they are actually moving

other than that, i have no idea

[toxic nacelle]

do you know that, after you update the world rotatin of your body, the find Look at rotation will be recomputed ?

[rapid helm]

how?

[toxic nacelle]

store the result in variable before updating your components rotation

because the function is pure

[frosty heron]

he prints before he set the rotation tho, just a hunch

[rapid helm]

Well i did print the lerp too

Same result

[toxic nacelle]

Body->SetWorldRotation will compute Find Look at Rotation once, then Rotation->SetWorldRotation will recompute Find Look at Rotation but because Body has changed, the result could be different

[sonic crest]

Print Body Location and Target Location, see if they change

[frosty heron]

disconnect the set rotation then, see if u get different result

[toxic nacelle]

my bad, you don't use rotation in your Find Look at Rotation but in the Lerp

[frosty heron]

I see no problem with this, the value always update

even after updating rotation

My guess is your Target and body doesn't move?

[rapid helm]

the body doesn't move Yea it's supposed to be a sentry

[dreamy mountain]

My character just doesn't move on ai MoveTo or simple move to

[sonic crest]

If the body is the actor itself, is the target set correctly??

[toxic nacelle]

do you have a NavMesh in your level ?

[dreamy mountain]

Yes

[frosty heron]

Not a problem as long the target moves, have u print string both location?

[sonic crest]

I'm not sure what you mean by Body and Target, different actores??

[frosty heron]

You can see from the video, my box stand still too

[toxic nacelle]

and your AI is inside the nav mesh bounds volume ? sure the function is called ?

[rapid helm]

the body is a component and the target should be set correctly because it does look at it but just for one tick and then it returns the same value as the first tick

[sonic crest]

Maybe check with the AI Controller? Behaviour Tree

[fiery ridge]

@hoary junco what did you decide to do?

[rapid helm]

i moved it manually to see if it updates

lemme try printing

[hoary junco]

go get some lunch and think on it some more because I'll be honest so much stuff was thrown out that I have no damn clue where to start.. back to square 0

[dreamy mountain]

Ai MoveTo is called, then it triggers on fail

[sonic crest]

Try printing from the Invalid

[dreamy mountain]

Idk why

[rapid helm]

nothing happened because i already did print valid before

[rapid helm]

Btw wut does this truly mean

The body changed

[fiery ridge]

get rid of tag system, store references on player or game mode, this will allow you to control all the colors and do whatever you want, gl

[sonic crest]

Temporary, try taking this whole function out and put it in the Event Graph to where the Look at Enemy is.

[rapid helm]

I actually did that before putting it in the function

same result

[toxic nacelle]

no its ok, but if you use your lerp with an alpha other than 1, each time a pure function (without exec pin) is linked, it is computed

[toxic nacelle]

for exemple, if you do something like this, your Lerp is computed once for the mesh world rotation, but after, for capsule component rotation, you will recompute the lerp, and because inputs has changed (mesh world rotation), it will change the result

[rapid helm]

So how do i recompute the lerp?

[toxic nacelle]

but it doesn't affect your actual issue because you don't use your lerp for the moment (your alpha is always 1)

[toxic nacelle]

what I suggest to avoid future bugs is to store the result after your lerp in a variable, and use this variable to update rotation of your components

if it's not clear, i can show you an other exemple with floats

[rapid helm]

I'll try dat

I'll return to tell how it went

Thanks y'all

[frosty heron]

Pure functions gets called everytime an exec is run

[fiery ridge]

is this something that can be avoided with c++?

[toxic nacelle]

with a variable

[sonic crest]

I had an issue with boolean in UE. where it's inverted, settings it to true, it returns false

[rapid helm]

So is it better to mix bp with c++ or just pure blueprint or pure c++

[sonic crest]

I'm using c++ with my new project, it's much better, c++ based with some BP.

[rapid helm]

so after i (almost) master blueprint is it an obligation for me to learn unreal c++ aswell?

I wouldn't mind learning c++

[fiery ridge]

.... but i like bp structs

[sonic crest]

Have a c++ base class
I have a big project which was bp based, I started to change some functions and put them c++

[sonic crest]

Go for it

Sounds like my life

[frosty heron]

@toxic jay Any wisdom on how to navigate codes? I can write something for my self but I can't read other people code.
Do i just need to read more on learncpp.com?

[rapid helm]

wait so if i were to start a new project i should pick c++ instead of bp?

[frosty heron]

When people said "just read source code"

my brain melts

[sonic crest]

Same

[toxic nacelle]

when you choose C++ or BP when you create a project only affect the code of the template. You can add C++ to a BP project, and add BP to a C++ project easily

and to debug

[rapid helm]

Ah

[frosty heron]

Im just ctrl clicking function but it still feel like a maze

[sonic crest]

@toxic jay c++ uses Game Instance like BP??
Game Instance for c++ felt obscured or like "it's there if you want it"

[frosty heron]

What's the diff between cpp gi and bp gi?

[toxic nacelle]

game instance is a c++ class, all classes in BP are in c++

[rapid helm]

@toxic nacelle so do i store it like dis?

[toxic nacelle]

BP game instance inherit from C++ game instance

[toxic nacelle]

yes, then you can use this variable after, because the result is cached

[frosty heron]

Ik I'm just trying to understand what he means

[rapid helm]

I may be really dumb but how do i use it?

[sonic crest]

Thanks

[frosty heron]

If u tap cpp you can make subsystem out of the game instance. Kinda useful

[toxic nacelle]

drag and drop your variable in the bp ?

[frosty heron]

I used it for loading screen because I don't want to clutter my main GI

[rapid helm]

Well das obvious

But how do i put the variable to use with the calculation is what i'm confused on

[rapid helm]

,,,whoops

[toxic nacelle]

just plug it

[rapid helm]

Well i actually did that initially

Still the same result

Unless i'm missing something crucial

[hoary junco]

@fiery ridge what was the code again to deactivate and hide an actor on pickup? I want to test something

[fiery ridge]

set visibility and collision

[toxic nacelle]

yes, i said that this fix won't your issue right now

[fiery ridge]

turn both off

[rapid helm]

Oh

[hoary junco]

also how do I get a reference to an actor because I saw it there before now it's gone

[toxic nacelle]

so, you sure your target is moving, is there an other code that try to move the target and potentially reset to his initial pos ?

[hoary junco]

like I drag off the target node, type in the name of the blueprint and it only says cast to

[fiery ridge]

go to your color actors, on Beginplay, cast to player BP and set self as reference (you need a ref variable on player BP first)

[rapid helm]

well i could try storing the original position and reset it after the move component to node completes

[toxic nacelle]

it's better to use Set Actor Hidden In Game, because sub-component will remain visible no ?

[fiery ridge]

havent tried that one yet

not sure what it does with the collision

[solid needle]

hi all, im making a PC / controller game and not sure how make an action button work for elevtaor, currently i have 2 inputs W + S to go up and down respectivly, how can i check which key was pressed to control the code

[fiery ridge]

now that i think of it, make one parent blueprint and the rest children, much much easier and less hassle

[rapid helm]

well i tried doing this and it didn't work for some reason

i did set it properly though i think

[minor wolf]

is modulo in blueprint broken? -1 % 5 is supposed to be 4

[frosty heron]

I used modulo just fine. Never tried negative number tho

Also watch variable can be broken afaik. Just print string to check the value

[minor wolf]

ah apparently this is correct behavior https://forums.unrealengine.com/t/blueprint-modulo-node-doesnt-handle-negatives/315093/4

[frosty heron]

👍

[toxic nacelle]

Yes, modulo doesn't necessarily give positive result

[toxic nacelle]

is your body moving, with this code ?

[rapid helm]

Oh you mean the sentry

It's not supposed to move

it's a stationary

[toxic nacelle]

yes, i only see the Body variable 😄

[toxic nacelle]

so why do you move your Body component ?

[rapid helm]

that's the target

the bp of the target to be exact

[toxic nacelle]

ok, both the target and sentry has Body variable

[rapid helm]

Yup

[toxic nacelle]

and your target is literally moving in the level ?

but the Find Look at Rotation always return the same result ?

[rapid helm]

Myyyees

it would seem so

[honest ember]

does someone know why Unreal doesn't let me to set the default value of a "sound component" variable?
I couldn't find much online
If I set the variable to "sound cue" than I can set the value but I can't use the "fade out" or "stop" nodes to stop the sound when I want
Also worth mentioning is that because of this I am getting an "accessed none" error after I stop playing. This is not game breaking just very annoying.
It happens because I try accessing a variable which hasn't been set yet.
Thanks for any help or tips.
Cheers🍻

[thin panther]

Well you're storing a reference to an audio component. What would you expect the default value to be able to be.

It can't know what audio component youre looking for at editor time

When you use something like a sound cue, it can have a default value, because it's an asset

[honest ember]

so if I use an audio component I cant set its value to be an sound cue?

[thin panther]

No, because it's an audio component pointer

[honest ember]

and are there any other options to fade out or stop the audio

using an sound cue variable?

[thin panther]

Either have an audio component on the thing, or at begin play, assign the ref into that variable

[honest ember]

I see it is weird cause in the ue documentation of the sound component is says I can add a sound cue

or maybe I am understanding it wrong

[thin panther]

You can, but you're not creating an adding a component. You're making a variable that is a component pointer, there's a big difference

[honest ember]

I see. Thanks for the explination

[thin cradle]

anyone know how to get the original bounds of an actor as if it was unrotated? get component bounds takes rotation into account and thus is inconsistent

[dark drum]

get the static mesh from the mesh component and get bounds of that instead.

[native wigeon]

Is there something i can do after using Enable Input to kinda refresh the key down inputs? If i'm already holding W and Enable Input, the W isnt recognised as down, and has to be pressed again to activate 🤔

[dark drum]

are you using enhanced inputs?

[versed sun]

maybe? not tested

[native wigeon]

yes

actually, i think my movement is still on the old system

[dark drum]

Yea that's the old system, as far as im aware it should still fire but if you have 'MoveForward' somewhere else, it's probally consuming the input meaning nothing else gets it.

[native wigeon]

it's definitely not anywhere else, but i think it might also be because i'm flushing input when i swap to UI mode only

i wonder if there is a way to undo the flushing, or whatever that terminology is 😂

[hoary junco]

@fiery ridge sorry to bother you again but a question, why are tags seen as a negative when setting this stuff up? Because after a bunch of testing I got the switch on string method to work, when Red is picked up I hide all instances of Red, and when setting up the show green and show blue, wouldn't it save a bunch of time if I just got GetAllActorsWithTag and set them all to NotRed so hide all Red and show all NotRed? I figure if I ever wanted to add more colours I could just asign them the tag of NotRed so I don't have to extend the blueprint any further

if there is a reason why this wouldn't work or why it's bad I'd like to know so I don't commit to this

[thin cradle]

it's not necessarily a static mesh

[wild crater]

So I'm looking into exporting some data, preferably to csv. From what I've read you can easily export data tables, but you can't edit data tables easily at runtime. So what would be the quickest way to export some data to csv without a data table?

[thin cradle]

I don't think that's gonna work, the box from get actor bounds is already scaled based on the actor's rotation, rotating it won't change anything
I don't think you can even rotate extents since they're not representative of a position

[versed sun]

if the extents are a 1,2,3 , and it is rotated 0,0,90, the extents will be 2,1,3

[thin cradle]

that's only gonna work for 90° rotation then

and the initial extents are still already wrong

well wrong relative to what I want from them

[versed sun]

ahh yah , extents are always in a grid

[native wigeon]

horrible workaround: duplicate the object, hide it, set its rotation to 0,0,0, get bounds, destroy 😂

[thin cradle]

yeah that is going to break many many things

[native wigeon]

i was actually doing stuff regarding object bounds yesterday

and i managed to get the proper rotated bounds after a bit of math

but i deleted it all because i didn't need it in the end 🤣

[distant hollow]

I have a number of walls generated using DynamicMesh, some intersecting one another.
How do I identify enclosed areas, and obtain those "corner points" in that area?

[sweet silo]

hi there how can i check what is colliding with a box?

i have a box on my hand and a box on an object and they seem to be colliding even though they haven't touched yet

[distant hollow]

Get OtherActor on collision

[sweet silo]

iv'e tried everything but i need to know what's collidiing

im on vr btw

[distant hollow]

Ya, check the Actor, print out to see what is the Other Actor that is colliding

[sweet silo]

wdym?

[sweet silo]

sorry i don't know how to check the actor

[distant hollow]

Drag out from “Other Actor”, print

[sweet silo]

yeah

[distant hollow]

Then see what is the print showing

It should show what is the other actor causing a collision

[sweet silo]

omg like this ?

[distant hollow]

Yes

[sweet silo]

damn cool it worked !

its vr handshake cc 0

i have this on it

but i don't know what are the right settings ? It should be just the box colliding

thank you so much for your help i'm going insane

[distant hollow]

So the actor hitting is of a class VRHandshake

[distant hollow]

You can ignore the cc0

[sweet silo]

LogBlueprintUserMessages: [t_cell_60fps_Blueprint_C_0] VRPawnHandshake_C_0
LogBlueprintUserMessages: [t_cell_60fps_Blueprint_C_0] collidedd
LogBlueprintUserMessages: [t_cell_60fps_Blueprint_C_0] VRPawnHandshake_C_0
LogBlueprintUserMessages: [t_cell_60fps_Blueprint_C_0] collidedd

ah ok what does it mean

[frosty heron]

Json

[sweet silo]

but what collider on the VRPAWNhandshake

[distant hollow]

That means your VRPawnHandshake actor is colliding with it

Try going to your Viewport and check the collision box

[sweet silo]

i have set everything to this setting

[distant hollow]

Do you want them to interact or not to?

[sweet silo]

here is the line

[wild crater]

export to json and then convert to csv?

[sweet silo]

yes i want the interaction but only with the box on the Object and the box on the hand
So yeah sorry i've set everythhing to no collision except those two boxes

this is the box setting on the hand

[frosty heron]

I don't know never worked with json. But I know you can make a Json structures so you can export the data you want

if you are talking about Data Table, it does take both csv and Json

[sweet silo]

and this is the box setting on the obejct

[distant hollow]

You can customize the collision settings

Just search for Collision in the Details

And play around with it

[distant hollow]

Yes this

[sweet silo]

yeah are those settings ok or should i set it up to collision enabled ?

[distant hollow]

Test around your settings

[sweet silo]

ok so this is correct

[sweet silo]

ok i'll try opther settinfs

[distant hollow]

Check further below

There should be a set of interactions showing what they interact with and not

[sweet silo]

oh so i could enable only the relevant one

[distant hollow]

Yes

[sweet silo]

but there also seems to be some sort of slight offset with the collision box

thanks i'll check

[distant hollow]

@frosty heron I have a number of walls generated using DynamicMesh, some intersecting one another.
How do I identify enclosed areas, and obtain those "corner points" in that area?

[distant hollow]

You can always adjust the size of the collision box and the offset

[sweet silo]

its only working when i activate world dynamic for some reason

and its working without my hand touching anything

i think it's colliding with the player start

wait i have an idea

i'll add the actual vr pawn instead of the player start

so i can see better

yeah no it still collides at some random point

isn't there a workaround here ?

[plush hornet]

Hi all I hope your well. I have a very specific problem with the AI perception. Basically my main actor has an ability where he can swap out with another Actor and I want the enemies to chase the current actor that is being controlled. The way I have it set up in my Ai controller works for a little bit but the enemies stop chasing the other actor after a while. If I switch back to the main actor the enemies start chasing again. Also if the switched out actor leaves the level and comes back the Enemies dont detect him at all. Ive provided blueprints and a GIF to better expplain what I mean below. Any helps appreciated. Thanks

[sweet silo]

ok i foudn a way

[distant hollow]

Player start doesn’t have a collision, it spawns an actor/character/pawn on start

[sonic crest]

why is this printing Destroyed??

[distant hollow]

You can set a variable in the AI blueprint to hold a reference to the controlled Actor, then change that reference when you switch Actors

[distant hollow]

Where is your part of Print that prints Destroy?

[versed sun]

Try this: the Debug Box visualizes the Bounds, and moves with rotation of Actor
https://app.screencast.com/rtGrZHSHeKsmu

[frosty heron]

With maths, I guess but don't ask me how. If I were in your shoes I will look at how Dungeons or areas procedurally generated, there are quiet a few algorithm on the internet

I think each people approach it differently

[sour crater]

yay if i ifnally fixed my code

[frosty heron]

some have their own unique setup with "seeds"

[distant hollow]

Those generally autogenerate first a floor then walls surrounding them

Which is easy

But what I need now is cause the user can place their own walls in any angles

So I’ll need to identify the space inside

[frosty heron]

I've never done anything like that. I will tho later after I finished my combat system

have plans to do PCG dungeons

so I guess I will leave the research for later 😄

[distant hollow]

lol

Ok tks anyway

[frosty heron]

all the best

[distant hollow]

I have a feeling it’s because you changed the class

Try to skip that node and see what you get

[sonic crest]

yup, it worked. oof.

not sure how would I change it now.

[distant hollow]

Connect it this way and see what you get

[sonic crest]

yeah after removing the SetChildActorClass it worked

but how would I change my weapon now

was doing it in c++ but since this messing it up, need to find a new way

[distant hollow]

Try changing the child actor class before setting the variable instead

[frosty heron]

You can do things in bp first, when they work. Then you can refactor to cpp

[distant hollow]

IsValid > SetChildActorClass> set AsWeaponBase

Rearrange the SetActorClass node to come before Set AsWeaponbase

See how that turns out

[sonic crest]

alright

[distant hollow]

@frosty heron Let’s say we put dynamic meshes aside

We have several walls of StaticMeshes in various angles

[sonic crest]

same thing

[distant hollow]

Would you have any idea how to identify the enclosed areas?

[distant hollow]

Same exact message? Show the new blueprint code?

[sonic crest]

same error

[distant hollow]

Then it’s probably the variable type since it is cast from a blueprint class

[sonic crest]

I did that too, same issue

tried that

[distant hollow]

You can try to have another blueprint class that contains the new child actor class, then set the variable to that instead

[sonic crest]

why is it being destroyed tho when the change class is there

[distant hollow]

As above

[sonic crest]

I can try the BP class rather than the C++

[distant hollow]

Because the class differs

[sonic crest]

and see how it goes

[frosty heron]

I'm not the right person to ask for these kind of stuff. I have 0 experience with procedurally generating anything.
Doing it Grid based make things way simpler tho, You can probably just check if every grid has something occupying it. Then the rest you just need to figure out if there is any hole

[distant hollow]

Hmm ok

[frosty heron]

Probably think it from 2D perspective first before doing it 3D

[distant hollow]

Grid is not possible cos we are working with a 20m x 20m space (minimum) and the precision is down to 1mm

[frosty heron]

#game-math or #cpp probably have better ideas

[sonic crest]

edited: the Blueprint class didnt work.

[distant hollow]

So if we are using grids that would be like 400million boxes

[frosty heron]

I mean grid is just imaginary lines. You can define 1 unit = 1mm

but yea not sure what you are doing

[sonic crest]

wait nevermind

[frosty heron]

better ask people with wisdom

[distant hollow]

Yeah but to check a grid space I’d need to define an array of grids first

[distant hollow]

?

Not resolved?

[sonic crest]

didn't work

[frosty heron]

Yeah but 1 Grid = 1 floor*

[sonic crest]

nope

[distant hollow]

1mm sq unit of a floor

[frosty heron]

shouldn't need crazy ammount, unless u making a huge area

[distant hollow]

And I have a space of 20x20 minimum

[frosty heron]

I mean I would think of doing it in a style of any Game Building game

like Rust

[distant hollow]

So that’s (20 x 100 x 10)sq

[distant hollow]

Yep they have bigger grids

generally 1m x 1m

[distant hollow]

Use another blueprint class, but set that blueprint class variable only after the Set Child Actor Class is completed

[sonic crest]

I'm trying something else

it works first well with the first weapon, but when I change weapon it gets messed up

[plush hornet]

Thanks, how would i do this?

[distant hollow]

Like a variable “Current Character” (type: Actor) in the AI blueprint

[dark drum]

Keeping everything to the grid is the way to go with this type of stuff. Is there a reason you need precision down to 1mm?

[distant hollow]

Then either use an interface or cast to/from the PlayerCharacter or AI blueprint to change them

[distant hollow]

It’s an archviz builder project for real-life application

For office space

So precision is down to mm

[dark drum]

Ahh ok. So to make sure i followed your previous comments, the user is able to place walls and you need to find the space inside the placed walls?

[distant hollow]

Yes

[dark drum]

what are you needing to get the space for?

[distant hollow]

To set floors

So if for example I have 6 walls forming two rooms

There need to have to different floor objects generated

Because each room floor is supposed to be individually customizable

[plush hornet]

Thanks, i get that but how would I implement it?

[dark drum]

Wouldn't it be better to have the user place the floors and have them attach the walls to the floor?

[distant hollow]

Because the walls may not be at regular angles and users may want to adjust the length of the walls etc

Eg like Coohom

[distant hollow]

Depending on context, can be simple or complicated

[dark drum]

But if you have a floor, the user could add/remove corners which they can then move around that make the bounds. Attaching walls to this would be significantly easier.

[distant hollow]

@plush hornet another easier way is to have the same variable in GameState

Then on Switch Charatcer change that variable in the game state

In the AI blueprint periodically check GameState and retrieve the variable and set it to the local variable to chase after

[distant hollow]

Hmm it’s worth considering although not the requirement given down

But I’ll discuss with my leader, tks for the suggestion though

[frosty heron]

Btw

I asked chat gpt, cuz why not

now I have a little idea for the walls

Just start from one of the wall . You want to have some sort of collision check at the corner of each wall

Get all the walls. Start from a wall, it can be any

then work your way through all the way. Check if a wall are connected to another wall

if they come back to the first wall, then you have enclosed space

[plush hornet]

Is this going to work? I aleady have the perception to chase the player controller and its stops working after a while

[distant hollow]

If it stops chasing you need to first identify the reason why it stopped

Such as printing the variable regularly

[plush hornet]

And when entering the level again it will only chase the main actor if its being controlled

[distant hollow]

So that you know what is actually causing it to stop

[plush hornet]

I dont know whats causing it to stop thats why i posted the blueprint earlier

[distant hollow]

@frosty heron it would return a false point at BC

[plush hornet]

It works with the main actor, and works initially when i switch to the other actor but eventually stops

Thats what confuses me

[distant hollow]

Do you have a variable on the AI blueprint that defines the actor being chased?

[frosty heron]

My brain only think of rectangle shaped dungeon

[plush hornet]

No. But wouldnt the player controller be enough?

[frosty heron]

i don't like pain so I won't do anything complicated

[distant hollow]

Apparently it isn’t since you are getting issues

[sonic crest]

it worked

[distant hollow]

After rearranging the order of the nodes?

[sonic crest]

    if (EquippedWeapon != NextWeapon)
    {
        if (WeaponBase && WeaponBase->HasAmmo())
        {
            EquippedWeapon = NextWeapon;
            WeaponBase->SetWeapon(EquippedWeapon);
            GEngine->AddOnScreenDebugMessage(-1, 100.f, FColor::Red, "Changed");
            WeaponChildActor->SetChildActorClass(EquippedWeapon);
        }
        else
        {
            return;
        }
    }

not sure what was the issue it just worked

sorry for cpp in BP but yeah

tested this same in BP and worked

checked my older project, had same setup

[dark drum]

The user would define the shape of the floor by placing corner markers. When placing walls, they can be placed along the edges. The wall can then be slide along the edge or scaled up to the length of the edge. (Use a ratio)

If they want to adjust the walls, they change the room points and the walls would update automatically.

[distant hollow]

Yeah I get that

[sonic crest]

Thanks guys

[dark drum]

The only other way i can think of is using a ton of line traces but I wouldn't recommend lol.

[distant hollow]

lol

Now I have even more things on the plate to do orz

[distant hollow]

Yeah someone else suggested that too, gonna look at it tomorrow

[dark drum]

Actually, box traces using some form of octree structure might work.

Edit: Although a line trace chain might work. o.O

[distant hollow]

@plush hornet can you SS the part where it defines in the PlayerController on the character chased by the AI?

[versed sun]

you shouldn't be checking BC
Just AC, CD, DE, and EA

[distant hollow]

Never used that, how does it work?

[distant hollow]

Right, the issue is, how to tell the system that BC should be skipped?

[distant hollow]

Assuming you are not looking at the picture now

[dark drum]

Trace to a wall, then get the right vector (something like that) so it does a line trace to the next wall, then do another line trace from this point again, repeat until you get back to the starting wall.

[distant hollow]

That would result in a false point at BC, no?

[plush hornet]

this is the logic for the perception

[versed sun]

Start with 1 wall, check its Left Side
If there is a Hit, check the hit wall's left side
Repeat
If no hit, then its an open room
if there is a hit that was already hit, then room is closed

i would have 2 sockets on each Wall mesh, one on each side
Use the Sockets World Location to do a Sphere overlap trace for other walls

[distant hollow]

What happens if there are only two parallel walls?

[versed sun]

then room cant be enclosed

which is what you are looking for , right ?

[distant hollow]

How frequently are you calling Execute AI? (First pic)

[distant hollow]

But both hits correctly, so logic wise it would mistake it as a room

[plush hornet]

From print string i can see when it sees the actor it only calls once, if it doesnt it calls multiple times which makes sense tbh

[versed sun]

like this ?

[distant hollow]

Then one possibility is that it was executed, it reached the spot where the actor was, and stopped

[versed sun]

or this ?

[plush hornet]

No thats not it because when i switch to the other actor it will chase that actor regardless of where i go to and then eventually stop

It will also do its attacks like with the main actor

[distant hollow]

Kinda yes
Anyway what you are suggesting is probably like a multitrace, I would be exploring that tomorrow

Thanks for the suggestions anyway though

[distant hollow]

It stopped when the character moved too far?

Could it be the radius?

[plush hornet]

No. I could be right next to it

I have a gif of it but it wont upload

[distant hollow]

Try adding this

See if the message appears

And also another Print right at the beginning of Execute AI, to make sure it was executed

[sonic crest]

Cast to Actor?

isn't that the base class??

why not cast to the AI or actor that you are referencing to?

[plush hornet]

If i leave the Level with the switched out actor and come back it wont fire at all until I switch back to the main actor

[plush hornet]

Doesnt work as it will only follow the main actor

[distant hollow]

Have you tried adding the prints and see what the results are yet?

[plush hornet]

Thats how i had it set up first

[distant hollow]

Let’s find out if the issue is due to a failed cast first

[plush hornet]

Yes I mentioned with main actor its a success and with switched out actor is also success for a while, but if i leave the level with the switched out charecter and come back it doesnt fire at all

[sonic crest]

so the AI does not move

[plush hornet]

No

[distant hollow]

No

I am saying

[plush hornet]

So i know that the issue is to do with how the perceptions setup

[distant hollow]

Have you added the Print on the failed cast yet?

[plush hornet]

Lol. Yes thats why Im telling you this

Thats how i know it doesnt trigger

[sonic crest]

use a breakpoint and follow it

[distant hollow]

What does not trigger?

[sonic crest]

I think the cast to actor doesn't triiger

[distant hollow]

The Execute AI? Or the failed cast?

[plush hornet]

The event execute Ai doesnt trigger, I have a print string before the branch and on failed but if I leave the level and come back with the secondary charecter it doesnt print any thing i.e it doesnt trigger

[distant hollow]

Ah ok

So Execute AI is not triggering

[plush hornet]

So i know the issue is to do with either the AI perception in the Ai controller or in the service logic

So either one of these

[distant hollow]

In that case maybe try to place Print nodes on the Perception

See where the branches lead you through and whether that route was intended / should be

[sonic crest]

print strings always saved the day

[pulsar vigil]

Hey guys, how do i get the name of the bp and not the whole actor placed in the scene name ?

[plush hornet]

I believe the issue is this

[distant hollow]

Cos no Actor?

[plush hornet]

It doesnt know what to search for but it needs to search for the player controller NOT the actor

[plush hornet]

Yes but theres no option for player controller from it

The actor can be plugged straight into the value as object but it will only target the main actor

[distant hollow]

Did it end up in the bottom route?

[plush hornet]

what do you mean?

[distant hollow]

Did it reach here but not work?

[plush hornet]

Not it doesnt fire with the secondary charecter. If I switch from main actor to the secondary one while the enemies see them it will follow the secondary charecter for a while. But if i switch when they dont see them it wont follow the secondary charecter at all.

Print string showed as well

[distant hollow]

“If I switch when they don’t see them it won’t follow”
You mean if the main or sub char is out of sight?

[plush hornet]

I need to connect the below but dont know how

[sonic crest]

get actor controller?

[plush hornet]

If the main charecters out of sight and switches, and the secondary charecetr then approaches the enemies it wont follow at all

[plush hornet]

There no option for that

[distant hollow]

So perception is not retriggering or Reactivation is not retriggering

[plush hornet]

so confused then lol.

It doesnt trigger on the secondary charecter

[distant hollow]

Autocorrect lol

[plush hornet]

If i switch the main to the second while the enemies see it can kind of "trick" it into following that charecter

But if I switch without them seeing it will only follow the main charecter

[distant hollow]

When you say “sight” does it only shave visual sight (directions count) or simply being within range?

[plush hornet]

It has 180 degree sight

From the ai perception

This will show you what the issue is

Finally got it to upload

[distant hollow]

So it is not perceiving the changes actor as a target

[plush hornet]

no

Hence why i was saying about the player controller being the target

[modest monolith]

Is there a way to advance this enum via code? Example go to day 1 to day 2 ... Idk something like a Add Node

[versed sun]

I use a Select, with the next value for each enume

[modest monolith]

Ah ok so there's no other way. This is what I do atm

thank you

[distant hollow]

I think maybe in that case
Instead of using PlayerController as the target, set a variable in GameState as Actor type, on wherever your blueprint that changes the Actor (I presume PlayerController), cast to GS and change that value, then plug that value as the Actor to the AI instead?

[versed sun]

You can convert Enum to Byte, add 1, and then Byte back to Enum, and do a check if its at MAX

[pliant jewel]

I'm working on setting up a top down shooter, and I'm curious how folks handle slopes, specifically allowing the characters to go up and down, and be able to hit other things above and below.

Right now I use my pawns control rotation to aim straight ahead. Do you just use the angle of the slope you're currently on?

[distant hollow]

You mean to be able to hit regardless of height difference?

[pliant jewel]

Yea exactly, I'm not sure if I should try to use the slope info directly and do a direct trace, or do something like sweeping a line trace that points straight up and down so it catches any thing above/below.

[lunar sleet]

https://tenor.com/view/yes-exactly-kylo-ren-snl-gif-15883010

Or you could do a shape trace/multi line trace

[plush hornet]

Doesnt work from what i can see as the default value of "Actor type" variable cant be changed

unless i'm missing something😵‍💫

The only one that can be edited is actor classs reference but that wont plug into where i need it too

[distant hollow]

If there is an output it’s somewhere

Is there anywhere that you call the event Perception?

When/where is this triggered?

[rough wing]

how can I generate a random stream from a vector?

[distant hollow]

Where/when is this being called/triggered?

[plush hornet]

Its always being triggered as the enemy has to know if the charecters seen or not

Bear in mind the AI controller is put into an Actors BP details panel so it acts indepently

[distant hollow]

Hmm
Guess I can’t help any further as I am not familiar enough with the subject, sorry about it

“This Event will fire when the Perception System receives an update and will return the Actor that signaled the update. “

[plush hornet]

😖

Thanks anyway

Anyone else that can help please?

[frosty heron]

#gameplay-ai

[jolly light]

Hey guys does anyone know how to calculate the dimensions of your landscape?

[plush hornet]

I cant because I got a warning about posting in mulitple chats last time. I dhave to go back and delete all of my messages

[frosty heron]

You can probaly delete the one here and post it in #gameplay-ai because the one that does AI stuff lives there

[plush hornet]

also Other chats have a very slow response time

[modest monolith]

Why the hell this doesn't work? The tormentor doesn't pop up and lose "Hidden" but it show the print string if i put it

[frosty heron]

On top of hidden, there is also Visibility, Only Owner see, Owner no See, Hidden in Game, etc

gotta check all of them

also your code not gonna work as intended if you have multiple tormentor

[modest monolith]

Hidden in game is more than enough. I always use only that and it's fine. No need to check everything.

Tormentor is only one

[frosty heron]

You can set it to not be hidden but if visibility is set to false, you still won't see it

hence the check list

but if u think u already checked all of them then, I dont know what else is the issue

[modest monolith]

It's visible

[trim matrix]

Is GetActorOfClass returning a valid reference?

[modest monolith]

Yes

It doesn't work not even if I reference it with level blueprint by dragging the actor

[trim matrix]

did you set the mesh component to be hidden in game, and now you are attempting to set the entire actor to show in game?

[frosty heron]

You should just toggle vissibility, I dont see the point of changing Actor Hidden in game in Run Time

[modest monolith]

Only the static mesh. now I changed it and it works. Thank you.. But the collision doesn't go enabled

[trim matrix]

Your trying to enable collision when the tormentor is spawned?

or disable?

[modest monolith]

I disable it when it's hidden and enable when he goes visible (not hidden)

[frosty heron]

WEll ur code set it to disable from ur last pic

[trim matrix]

Do the same, enable collision on exactly the component you need.

[frosty heron]

gotta tick the box

[modest monolith]

I mean my line trace doesn't touch iut

[modest monolith]

lol hehe

[frosty heron]

And if that dont work then you should check your other component as Rappy said

[modest monolith]

ill let you know

[versed sun]

Anyone have a way to SET the color? seems its not exposed 😦

[modest monolith]

It doesn't work.. Also why should i set collision only for one component when I can include the whole actor

Okay the mesh didn't have collision

lol

thanks for your help guys

[trim matrix]

there you go then gg.

[modest monolith]

❤️

[trim matrix]

BlueprintReadOnly

Its the only mention of the word Color in the header file

[versed sun]

bummer

[wide kayak]

Hey guys, kinda "newish" to the UE5 (and Enhanced Input)

I want to know if there's a way to do what i'm looking for.

Basically i have a Input Action that uses a value type of Vector2. So that i can add the X-axis value for right/left movement and Y-axis value for forward/backward movement fed from the keyboard W/S keys. However, i don't really know how to make it distinguish between when it's pressing W or S from this node.

I set it already in the InputAction Mapping, but can't understand.

So far i can only move it forward (using W) because this blueprint will feed a positive value. But i wanted to know if there's a way from a single Input Action so it can verify that is being pressed from the EnhancedInputAction node and set the value being fed to negative.

[modest monolith]

Is there a way to make this text always centered regardlesso of the length?

[trim matrix]

In the details panel for that text, anchor it to the bottom center, change the Justification to the center setting as well. Then add a x position offset to the text box, equal to half of its X size.

[lofty rapids]

from the ue5 third person template
in the input mapping context

[wide kayak]

Oh wow, thanks! I will try to study that, i don't understand the logic behind it, but thanks alot for that!

So simple, didn't even thought about it 🤦

[lofty rapids]

you can see modifiers, and you can negate

[modest monolith]

Didn't get the last part

[trim matrix]

Make its position X, 715 / 2 * -1

[modest monolith]

But it's not centered now

[trim matrix]

Is that text placed inside a canvas panel? or in some other object?

[modest monolith]

canvas panel

[trim matrix]

Is it just the text that doesnt look centered, in game, or is the actual text box in editor not centered.

[modest monolith]

both

[trim matrix]

Confirm with me your anchor setting, is it bottom center?

[modest monolith]

Yes

[trim matrix]

If your justification is centered. and your Size X is 715, and your position X is -357.5. then it should be exacltly centered within the canvas panel.

I would then worry that the canvas panel isnt centered, is this canvas panel the top in the heiarchy?

I would then worry also that there is another setting on the text box you have changed that isnt the defualt.

[modest monolith]

Like what?

[trim matrix]

I dont know.

If this doesnt leave you with a centered text box in a canvas panel, im not sure.

I could imagine the text being rendered within the text box as being uncenterd

font could mess it up, translation could mess it up.

But the text box itself? the green outline when you select it?

[trim matrix]

You dont have size to content enabled do you?

[modest monolith]

It's enabled

[trim matrix]

disable that then.

It will mess it up.

text will render outside the bounds of the text box widget size anyways. You dont ever need size to content on a text box.

[modest monolith]

Oh now it works!! Thank you!! How did you know about this math formula ? lol

[lofty rapids]

center - (width/2)

[trim matrix]

Just think about it, the x position offset moves the widget by its top left corner.

btw you can do the same exact thing for the Y position offset.

hail ms paint

[surreal peak]

Just a random ad for our glorious #game-math channel!
Don't know the context, but maybe it's useful!

Until we meet again!

[modest monolith]

https://tenor.com/view/confused-unga-bunga-loading-uga-gif-23786525

[quartz mural]

I'm getting an infinite loop crash when my function hits its 20th cycle. I need to run the cycle 24 times. How do I allow it to keep running the cycle until it's done, instead of the engine assuming it's a loop?

[surreal peak]

The Engine doesn't assume an infinite loop with 20 cycles. The max is way higher.

You can even set that somewhere in your Project Settings

Pretty sure it's a million even by default?

[quartz mural]

Hmm, ok. I'll keep gandering.

[surreal peak]

You might be calling it way more often than you think?

[dark drum]

UE blueprints can perform about 1 million steps in a given tick (configurable but not recommended to change unless you actually know what you're doing) before it assumes there's an infinite loop. Running a function 20 times doesn't seem like a lot so the question is, what is this function doing?

[quartz mural]

It's a precedure, I'm trying to generate a house. I'm still just working on organizing the data, so it's just a bunch of named rooms right now.

Pressing F starts the procedure by sending a request the Room Manager.
The room manager goes through 2 functions, one to determine what the next room in the order is, the next to determine the space it needs to spawn. It then send that info to the Mansion Manager.
The mansion manager takes the size and name and sends it through several more functions, one to clear the space, then place the floor, then place the walls, then set the room in play.

Setting the room in play right now just prints it's name out and then repeats the procedure by sending a request to the Room Manager.

When I prepare the size, I can break the cycle at 19 and it'll run the whole thing. If I connect the 20th branch in the series, it'll crash the app.

[woven sparrow]

Hey there everyone:)
I'm trying to use this node in a geometry script BP, but I'm running into a problem:
Is there a way to get a reference to the "world" ("create in world" pin) using BP?
If not, what's the easiest way to get a relevant reference?

Thanks!!

[lunar sleet]

uh #geometry-tools might be better with this stuff. Otherwise maybe drag from that create in world pin and see if it gives you any options to get the world.
This is the closest I can find in bp but that function you have there is asking for a UWorld* , so idk if you can use that, maybe with a pass by ref? 🤷

normally the code has better comments but this is still flagged as experimental so the only comments are stuff like TO DO 😄

[flat coral]

So I get this error, which is an easy fix. Right click, refresh nodes, and everything compiles happily.... until I restart Unreal.

Every single time I restart the editor, this error comes back.

How do I make it REMEMBER the refresh? Why does this keep reverting?

[frosty heron]

Bp struct?

[flat coral]

SJournalDescriptor is a struct, yeah

[frosty heron]

I see BP struct

[flat coral]

Where?

[frosty heron]

Here

[flat coral]

Is there a distinction between "structure" and "BP struct"? I'm not sure what you're saying

[frosty heron]

Struct made in BP is known to break

they should be declared in cpp

anyway apart from that

[flat coral]

I dont use CPP

[frosty heron]

Are these the same struct?

Well you should if you dont want to break your struct

[flat coral]

And no the data id is just a GUID

[frosty heron]

You seem to have a data table plugged in as variable

The outrow is wild card

[flat coral]

THAT'S gotta be the issue!

[woven sparrow]

Hmm I see. I'm honestly not sure, nothing immidietly helpful popped up from dragging out of the creat in world pin.
What would you put in the "in elemnt handle" connection? Sry, not even sure what to ask haha

[frosty heron]

Im not sure

[flat coral]

But wait how do you cast a struct?

[woven sparrow]

But I'll try the group you sudggested, Thanks!

[frosty heron]

You don't

But for sanity check

Can u chose a specific data table?

the one that uses SJournalDechiptor

[flat coral]

Multiple tables do. Each level has it's own journal data table

[frosty heron]

I mean im using this fine, so I don't know if that's the issue. In this case tho, the Data table i feed is always usses FashionStruct

but for sanity check you probably want to try hard coding a data table that uses SJournalDechiptor only. see if the error still presist

[earnest ember]

How do I make to shoot inside the car like drive by

[flint night]

How do I add a specific actor as a child actor component in blueprints? I basically just want to parent one thing to another

[flat coral]

Fixed it! The answer to "how do you cast a struct" is apparently to store it as a local var

I don't even reference the variable anywhere but that set call alone made the problems stop

[frosty heron]

yea I don't know about this. If that works out then good. Not something that I have tried

normally I know the struct im breaking is of a certain type

[frosty heron]

Using add child actor component , then you can set the actor to w/e actor u assigned

but child actor is known to break as well

[flint night]

wdym?

[frosty heron]

Bp struct and Child actor are most commonly uttered when it comes to stuff that break

it's just buggy

🤷‍♂️

but I never encounter it since I don't use it (child actor)

bp struct I learn the hard way

[flint night]

Is there a better way to have one actor mirror the transform of another? Setting it in BP every tick seems inefficient

[frosty heron]

Had to redo it pretty much

If it's something that must be done every frame, it probably belong to event tick tho

[flint night]

fair

[flat coral]

So here's my theory. Impure nodes cache their output to ensure idempotency if it's used multiple times. I bet that output is CACHED as a wildcard, even though the first use of it is a break that guarantees the type. I bet if I was only doing EITHER of these uses of it, it wouldn't break. Don't have time to test that theory today though

By adding that set call, I'm replacing the multi-use output with a strictly-typed one

So that's what gets cached instead

[dark drum]

Of course there's no harm looking at reducing the number of things that needs to be done is the various functions but what you'll need to do is either jump to C++ and multi thread or learn to spread stuff across ticks.

Spreading stuff across ticks means having an actions list (in some shape or form) where each tick it completes the first action in the list and then removes it when complete. The following tick it moves onto the next action and so on.

Edit: I forgot to add, this does mean the construction script becomes useless but a potenial work around is using editor functions. So you would have to manually run x functions in sequence when the BP is selected in the editor via the details panel.

[frosty heron]

Well if I ever run to your error, I will sure to keep that hack in mind 😄

[waxen fog]

Hey does anyone know of a way to spawn an audio volume at runtime?

or get a reference to an audio volume thats in the scene?

[frosty heron]

Just spawn at run time and cache it. Anytime you need to get ref to it, you just get the variable

if you want to get a ref to an audio volume that you preplaced in editor. you can create an actor bp . Create variable type of the Audio , make it instance editable, expose on spawn
.Drop the actor into the scene and just drop pick the audio comp

I assumed audio comp not audio volume

[spring magnet]

Just wanted to check in to see if anyone here has a solution/workaround to the "text inside a retainer" bug, present since UE4

[undone surge]

is there a tool in ue5 that prevents my gun clipping into the camera when aiming down sights

[earnest swan]

You can try adjusting the near clip plane

@undone surge

[undone surge]

where can i find that

@earnest swan

[brazen pulsar]

So, I've got a bunch of player starts, one in front of each door to a new level, and I don't want the game to pick them at random when going from one level to another. How do I make it so the player starts a level at a specific player start?
I think its something to do with the 'options' in the open level node and the player start tag in the player start actor, but when I set both to say 'mall' it still just picks a random player start

[earnest swan]

Open menu Edit → Project Settings → General Settings/search Near Clip Plane

[undone surge]

do i make it higher or lower

[sleek timber]

Hello friends! I'm beyond stuck with some blueprints and am in desperate need of some help.
Since you can break down an array like shown here in three steps, shouldn't there be a way to add stuff into the array working backwards? If so how?