blueprint

[flat coral]

Except now the problem is, if I MOVE that collider at all, it stops working. The above works like you'd expect, but in the below code the constraint has absolutely no effect on my pawn.

Wait this is bizarre, this has no effect the FIRST time I go through this collider, but subsequent times work

[hasty merlin]

Can anyone tell me why im getting thiss error?

Blueprint Runtime Error: "Accessed None trying to read property K2Node_DynamicCast_AsBP_First_Person_Character". Node: Branch Graph: EventGraph Function: Execute Ubergraph BP Chest Blueprint: BP_Chest

[lofty rapids]

where does it take you if you click on it ? your variable is most likely empty

[hasty merlin]

this is jsut to make sure audio doesnt play if i press E while i have inventory open

[flat coral]

Yeah so you're dereferencing Target to get InventoryOpen, and Target is none

oh because you're not setting it

I dunno where that blue line goes but probably an entirely different execution thread that isn't being called

[lofty rapids]

"DynamicCast_AsBP_First_Person_Character" <-- but it says this tho

[hasty merlin]

i do ahve it getting set its just AFTER first interaction

[lofty rapids]

what is the target on inventory open ?

[hasty merlin]

so i have an input where tab opens inventory thats located in fpcharacter BP

[lofty rapids]

the target plugged into the boolean is it a cast before that ?

[hasty merlin]

yes it is

[lofty rapids]

what does that look like ?

i bet thats comming up empty

[lofty rapids]

you don't want to cross execution line like that

data across execution

i would cast the player on begin play if you can

then promote to variable

so you have a reference you can use on either event

[hasty merlin]

this is the inventory event

and tab just calls it and only it

its constantly changing tho whenever i hit tab so i need to ssomehow send it back

thats why i ahvent promoted to variable

when i first tried it, it just broke the inventory cause the variable was only in chest and not in fpcharacter

[lofty rapids]

i mean since your casting to the player, and using it in another event you don't know what will be in that

you would hope it's a successful cast and there is data

but if you cast then set it as a variable

you can then use that reference in the events

[hasty merlin]

when i hit tab to exit it i need to reset that variable somehow

defs dont want to do event tick

and beginplay will only do taht once

[lofty rapids]

once you cast to it your all set you have a reference

i don't see the problem but you can program any you want

[hasty merlin]

ill try that real fast then

ill send a pic to make sure im not messing it up

oh but i need to cast for the inventory open call

[lofty rapids]

you also want to make sure the cast succeeds

i'm still learning but i have a good idea of why that accessed none happens

your variable is empty

[hasty merlin]

until its opened for the first time i beelieve it is

this si what youre talking about right?

its not reading that the value got changed after opening

but the cast did succeed

[lofty rapids]

no thats not what i'm talking about

[hasty merlin]

wdym then?

[lofty rapids]

i was saying to just get player, cast to your player bp, then promote to variable

so you can use that variable in place of a cast on the events

so you don't cross lines or you could just keep casting every time ig

[hasty merlin]

isnt that what im doing in the image?

oh are you saying just to promote the "As BP First Person Character" as a variable?

like this?

[lofty rapids]

whats connect to the object pin ?

[hasty merlin]

get palyer character

[lofty rapids]

but yes like that

[hasty merlin]

im jsut too lazy to make another node

[lofty rapids]

ok so now where your dragging off onto the other execution

because your casting

just use the reference

[lofty rapids]

like that but with power going to the branch

[hasty merlin]

ypu sjust connecting things now

[lofty rapids]

as long as the cast succeeded and it's the same bp, it should be fine

[hasty merlin]

perfect

ty

[lofty rapids]

you can just use that in place of a cast in that bp

[hasty merlin]

youre a G engage

also

when my inventory is open, (inventory is just a widget with 0 functionality atm) if i hold leftclick i can stil walk around and move my camera. how can i stop this wihtout pausing?

in theory its a multiplayer game although its absolutely not going to be

[lofty rapids]

i'm starting to learn a little about multiplayer

wdym "in theory" ?

in single player you sould just use a boolean

switch the boolean and then branch it so it doesn't work, switch it back it works again

[hasty merlin]

im trying to do like a mini replica of the popular nextfest game "DungeonBorne" for my final assignmnet (due in an hour) and that game is multiplayer

[hasty merlin]

switch a boolean?

[lofty rapids]

in a way like this yes how you have a boolean, but you would do your movement code on isenabled or something, then enable/disable it by flipping the boolean

thats how i would do it other than paused

[hasty merlin]

ahhh so up here IF newbool==True, run and in the inventory area set the newbool

[lofty rapids]

yep

[hasty merlin]

gracias senor

[simple falcon]

im losing my mind i need help

how can i override the animation from within a child animation blue print? there is no AnimGraph within the child abp

[hasty merlin]

another question, is there a way to make this door still have its fucntioning holes but for my line trace, not?

[simple falcon]

this is the child ABP thats created by defualt. its compeltely empty but it works. how?

[flat coral]

Collision channels.

[frosty heron]

It's not empty if it's derived from a class

[hasty merlin]

just create a box collision attached to the door in the veiwport editor?

[flat coral]

yeah and have it set to a different collision channel than whatever you want going through the holes

[frosty heron]

@simple falcon you want to read a concept called inheritance in object oriented programming

[hasty merlin]

whats a collision channel?

[flat coral]

This stuff

[simple falcon]

right i get that, but if its simply inheritence, why is it that when i assign the skeletal mesh to the parent ABP, the character doesnt animate, but when i assign the sm to the child abp, it animates as intended

[lofty rapids]

did you make this door ?

i wonder if custom collision effects line trace

[flat coral]

Also highly recommend setting up some custom collision channels in your project like I have. Something like interaction is so important to control

[simple falcon]

also how can i override the animation if there is no animgraph?

[frosty heron]

Yout parent could be a template class, it's hard to tell from here

[lofty rapids]

if you made a door with holes and cust collision in blender would a line trace go through the holes ?

[hasty merlin]

asset is from UE store but the interactivity was made with massive help from squize

[frosty heron]

You can only override animation from a template class

[hasty merlin]

what would i set LT to?

[frosty heron]

You can change the anim in the detail panel somewhere

[flat coral]

Your brand-new custom interaction channel 😄

[frosty heron]

If your parent class is a template class then it make sense that you can't assign Sm to it

[flat coral]

Interaction is really important to isolate because it's SO often the only thing you want to block. Like this door is a great example, everything should go through the holes except your interact trace. Or a broken window should allow almost anything through, but you probably shouldn't be able to pull a switch through it

[hasty merlin]

how do i make one? keep in mind i only ahve an hour till this needs to be submitted and i need to package before that

[simple falcon]

hmm ok in that case, how does the child abp make the animation work. which field is controlling this functionality?

I see an Asset Override tab, but its not interactable

[flat coral]

Oh rip then screw that, just add in a collision cube that blocks whatever channel it already is

[frosty heron]

@simple falcon if u are indeed working with template, there should be a video on youtube coverting this

[simple falcon]

can you please link if you have it on hand or know the creator name

[frosty heron]

Afaik last time I used it, the anims to override are the in the right panel

[hasty merlin]

one of these?

[frosty heron]

I don't remember, any video covering it should do

[hasty merlin]

or do you mean go into the SM itself and change the collision?

[hasty merlin]

got one of those

just renamed to full collision

cause thats in the bp viewport editor right?

[flat coral]

Oh sure!

[hasty merlin]

what setting do i need to change for it to stop LT

[flat coral]

This stuff

[hasty merlin]

what do i need to change?

just visibility to block?

[flat coral]

I'd change everything to Ignore, and whatever your trace channel is to Block

[hasty merlin]

seems like it

whats the difference between camera and visibility for line trace?

[lofty rapids]

you could do custom channels but i don't see how that will make holes

[flat coral]

As far as you care right now, they're just different channels. What they do depends on what you assign to them.

[hasty merlin]

neat

ill take a look into that for my next terms assignment

[flat coral]

Okay I'm at my wits end. This code works exactly as expected, but NOT the first time I pass through the collider. Second time, third time, whatever it does what it should. But the first time, the constraint does nothing.

Things I've tried:

1. Just calling SetConstrainedComponents twice
2. Putting a delay between the SetWorldLocation and the SetConstrainedComponents
3. Calling SetConstrainedComponents on BeginPlay
4. Waiting a super long time before I go through it, in case it's about time

[hasty merlin]

wish i had a solution for you as you did i

[flat coral]

But if I remove that SetWorldLocation call, it works first time every time.

Screw it, it's 530 on a friday, I'm needed at the pub.

[hasty merlin]

have one for me

actually amke that two

tis been a long week

[visual crest]

is there a way to make radial force ignore a specific actor? I am using it to create a shock wave out from my caster and it works perfect but it is also is effecting the caster(Note I know it has ignor self in options but the spell is spawned so all it is ignoring is the spell)

[glossy cloak]

Anyone know if there's a way to lock a spring arm component from lagging in a certain axis? Or an alternative?

[glossy cloak]

I think this is your only option

[visual crest]

Yea that don't help

[glossy cloak]

Is it too late to put your enemies on a new object?

Or your player

[visual crest]

Any npc can cast the spell

trying to use luanch charactor now but its not anywhere near as good

The char is not moved verey much unless they are in the air already and if they are they go flying at insane speeds

trying to knock them up first then aply the knock back but its not going well at all and I am not sure why

[ornate linden]

what is the like white line stuff on my game window. won't let me click inside it or do anything while its on

when i go to a blueprint and hit play so it opens up a new window to play it works fine

looks like some sort of bug from moving editor windows around. i just jiggled some parts of the interface around until it fixed itself

[marble tusk]

Yeah, it's the panel snapping overlay not going away when it's supposed to. Been a bug for a long time now, but it happens pretty rarely. The fix is to just drag another panel over and back off of it as if you're triggering the overlay to go away again.

[hot lion]

Hello, im getting some very weird stuttering issues while trying to do some Finterp To with an Actor rotation, anyone had the same issue ?

[visual crest]

Is the launch velocity different from a vector? because the trace shows things going the right direction but the actors all ways fly off in weird ways or not at all...

[dawn gazelle]

If you're using a location as the velocity, which you are as you're using the actor's location + a modifier, then you would definitely get them flying off in weird ways.
It seems like you already have the vector you want to use and are multiplying that by 1000, if that's the relative direction you want them going in, that should suffice.

[visual crest]

ah so drop the get actor loction for the target?

[dawn gazelle]

Yep

[visual crest]

Thank you I have been at this a while and had no clue what was wrong. Also is there any way to radial force to ignore a specific actor?

That worked perfectly! thank you lol

[dawn gazelle]

Don't think so.

[visual crest]

ok

thanks again. I am still haveing the weird proplem of when on the ground the targets don't move much

[fervent lantern]

I cannot for the life of me get root motion working on this so Here I am. Pls help

[visual crest]

is it enabled in you abp?

[dull shell]

In your ABP->Class Defaults-> Root Motion mode should be set to Root Motion from Montages Only. Also show AnimBP and logic of how you play this anim

[fervent lantern]

I already had the abp setting on and it still didn't work. This is how I play my anims. This is in the player blueprint.

[visual crest]

I just realize that its not that the target are ground its that they are in the middle of a root motion animation. They can be moved up but not in any othere direction while in the animation.. Is there any way to fix this?

[hot lion]

Sorry to ask again, but I'm pulling my hairs one by one since a few hours, cannot find a proper method or get rid of the stuttering while doing a Finterp to toward an character rotation. Any hints are welcome !

[cobalt gulch]

How do I get the closest bp actor to the player?

Im making a system where the character looks at the nearest bp actors

[dawn gazelle]

Sorry, not sure. Both animation and physics are probably my weakest points.

[visual crest]

i see

Thanks.

[mild ibex]

When loading a sublevel with 0 lights in it the lights in persistent seem to flicker every time without fail. Is there a way to avoid this? I'm just trying to stream in a different level

[dawn gazelle]

Probably do a multi-sphere trace by channel at the player's location at whatever max radius you want to check. That should give you an array of hits. You'd then need to check the distance of each hit actor and retain a reference to the closest one.

[cobalt gulch]

I can do this in the animbp?

[dawn gazelle]

Sure? I mean, you can do anything basically anywhere so long as you know how to get references.

[trim matrix]

seems like the camera is blocked and can't move freely

[dawn gazelle]

Then make sure you're using a good trace channel that you know the actors you care about respond to.

[hot lion]

I've disengaged some settings in the character menu to be able to move it freely around, not sure why it would be locked only during the Frinterp

[barren dove]

im dumb here
using "switch on name" or "switch on gameplay tag" how do I change the name/tag of the pin?

[cobalt gulch]

This is finding the look at target component i put in another actor

[barren dove]

ah ha there's an interface on the right

[lyric pumice]

Hey guys! Anyone can help me with this? I can't solve yet

[cobalt gulch]

What would the default position for looking be?

Say the character isn't around players, what should i set the var to?

Would it be like this?

[frosty heron]

You move it underneath the level, or somewhere people can't see

They have to be in the world for you to see it. That or you need multi world plugin which cost u more thna $300

[lyric pumice]

Even though it's simple, I wouldn't come up with this solution anytime soon 😅 . Thank you very much!

[frosty heron]

They have to be spawned in a world somewhere, another way is to spawn the mesh in the other world.
Unfortunately Unreal only support 1 world at a time out of the box. Someone did a MultiWorld functionality (in a form of plugin)
But it cost quiet a bit of money. Those method are what the AAA studio would probably use but honestly for our use case, spawning it somewhere in the same world will do the trick

[lyric pumice]

I used to wonder why something 2D would be spawning in my viewport, now I know and it makes sense, tnx. For other uses, this can actually cause more headaches.

[cobalt gulch]

Is this how I can smooth a float variable?

Im trying to slow the looking speed as the players head snaps to the other player

instead of moving slowly

[flat coral]

Alright I'm drunk as a skunk but I couldn't stop thinking about this problem at the bar. Came home with new things to test.

So RIDDLE ME THIS: Why does THIS version of the code not apply the physics constraint the first time I pass through the collider (working every subsequent time)...

But THIS version works!

Do you see the edit there? Squint, if you gotta. The ONLY change is I'm no longer calling GetForwardVector on the collider to make the plane I'm mapping to.

It has nothing to do with the calls I'm doing. A works, B doesn't. IE, it works when the plane normal is 0,0,0, but fails (just the first time!) when it's 1,0,0

[glossy cloak]

That "closest actor" output array is sus.

Why not just use "find look at rotation"?

[brave isle]

hello there, new here, seeking for infos and maybe some enlightment about what's going on with my UE5.3 trying to do a simple task : spawning a train track to a location then move it to the desire spot . track 1 spawn at coordination 500,500,14. track 2 got a box collison detection set-up for floor ( if up and down) ( suposed to be ruled by a procedural runtime world so the track can manage to follow the map bumps ) thing is track 1 spawn correctly , track 2 get to the correct attach point. ( and then track 3 : spawn at 0,0,0 of the world (not okay) , track 4 spawn at correct attach point of track 3 ( correct) ( track 5 and more spawn at 0,0,0 of world) (doubly not okay)

here the system inside the track themselves to guide the attach point results.

here the function in the gamemode to spawn the tracks in runtimes. shouldn't be something to hard to acheive yet everything goes worng ( been doing 8 different function all same result ) ( is UE5.3 broken ? ) im currently redownloading 5.2 and see if this work ( used to work wth some previous project until i had a SSD crash for no reasons lost 1 and half year of progress ._. )

• UE5.3 random bugs like moving an box collision makes path unreadable until you either delete the box itself and add a new one, or compile every damn blueprint that affect it in the engine. ? normal ? never had to do that in 5.2 and less

[gentle urchin]

Why remove (and resize) index before setting and resizing?

Also.. backup to another disc and/or sourcecontrol.

[glossy cloak]

If your array was 1,2,3,4,5 and you remove 3, then set that index to 6, then you'll have 1,2,6,5

I don't think that's what you're looking to do.

You're ultimately removing 3 and 4 by removing that index, then setting it.

[barren tangle]

hello, the projectile has the Homing function. but do you know how to set the targert? I was thinking i had to put my target actor to the Homing Target Component but it doesn't match so i can't

[dawn gazelle]

You need a reference to a component on the target actor. So it could be the mesh or the root component, or any other components you have attached to your actor.

[barren tangle]

thanks i will try with that 😄

[gentle urchin]

TargetActor->GetRootCompoment is usually solid

[barren tangle]

thanks

[fast abyss]

Hello!
I would like to stop blueprints from compiling when launching the editor.
I think bRecompileOnLoad is meant to do this (https://youtu.be/j6mskTgL7kU?t=3047) but I'm not sure how to properly check that.
bRecompileOnLoad does get set to false so I think my DefaultEngine.ini is correct

[/Script/Engine.Blueprint]
bRecompileOnLoad=False

It would also be great to not automatically compile a blueprint when loading it in the editor, but I'm not sure how to do that.
Any help would be greatly appreciated 🙂

[paper crypt]

Soo i created a working button that muted audio, the problem is i duped it to have multiple buttons for each audio. Now only the last created button works, the rest lose interaction entirely.

My guess is its the getcontroller thing but i cant tell

[gentle urchin]

Yep

If you were to run with this setup

Youd only want to enable input when the player overlaps

And remove it when end overlap

(And remove the gate, its not needed)

[paper crypt]

ok, how do i go about ending input overlap?

[gentle urchin]

Ypu already have the event

I believe the node you want is disable Input

[paper crypt]

ah ok, i have 2 input nodes, "enable input" and "InputAction Interact"

[gentle urchin]

Enable input is what makes the InputAction work on this specific actor.

So

• Remove EnableInput from beginplay

• add it to BeginOverlap

• remove the gate

• add disable input to end overlap

[paper crypt]

Thanks so much! that worked easily

would you also no how to create it vice-versa, so i press it again to reenable the sound?

[gentle urchin]

Im not very familiar with the sound setup

Does pushing a sound mix modifier remove sound ?

You probably wamt to invert that push

[paper crypt]

it overrides the mixer to set it to 0, i think i can figure that part out its just the button REinteraction part

[gentle urchin]

Usually you wanna track the state yourself

So having a bool (for a binary state) makes sense

Then youd simply do a bramch on that bool

And invert its value every time

So inputaction -> bool = NOT bool -> Branch

[neon acorn]

Hi all,

I am working on an RTS and I need to be able to show the cursor permanently but showing the cursor makes it so that I can't get the cursor position using enhanced inputs mouse movement. This problem can be easily replicated in a blank project by the following steps:

1. In the blank project, create a gaming mode and player controller and set them up as defaults.
2. Create an input action and mapping context for the Mouse XY 2D-Axis.
3. Set up the player controller blueprint like the screenshot.

Removing the connector before setting the mouse cursor and moving the mouse, displays "Foo". But if show mouse cursor is turned on, no matter what game setting is applies, I can't get "Foo" to be printed without holding down a mouse button.

I have seen some posts like in here https://forums.unrealengine.com/t/how-to-show-mouse-cursor-without-losing-mouse-capture/578191/3 which talks about how to workaround things using CommonUI but since I haven't started working on the UI, I was looking for an alternative way.

This is probably a question that has been asked a lot, but I haven't really seen a good answer, or the answers are for pre 5.0 like https://forums.unrealengine.com/t/mousex-bindaxis-returning-0-unless-mouse-button-depressed/325857. So, asking the question again.

[frigid summit]

its been a week and i still cant make it happen its just a simple freaking spawn coin system

[gentle urchin]

Likely because its already captured elsewhere

[cobalt gulch]

Instead of the location?

[neon acorn]

How do I know where its captured. In the blank project for eg. there is literally nothing except the player controller and the game mode.

[gentle urchin]

Havnt checked anything but id bet its related to how the cursor is avtually handled in engine..

Does the same apply formold input method?

[neon acorn]

@gentle urchin Pretty much the same, yeah

The only difference is that the old axis mapping always triggers an event, even when the mouse is not moving, hence the branch. The new enahanced input only triggers when the mouse moves

[gentle urchin]

But neither gets axis values while mouse is showing?

[neon acorn]

Yep, unless a mouse button is held down, then it shows

[gentle urchin]

You could just calculate the delta manually

To avoid dealing with engine 'defects' 😅

[neon acorn]

Yeah, I am trying not to use tick, else it's trivial to solve

[gentle urchin]

Its fine to use when you need it and the alternatives are few

Doubt engine canvas got an option to bubble cursor events

If thats the culprit then your option is either custom subclass that you use, which does this (guaranteed c++ territory) ,

Or calculate it manually

[neon acorn]

So, even if I am not using any UI stuff in my project (yet), its probably a UI canvas that is capturing it?

[neon acorn]

I believe there is already a solution someone created to work with an older Lyra project that does something similar, but they are utilising CommonUI and creating an action router subclass in C++.

Since I am not using any UI (base UMB or CommonUI) yet, I was wondering why would I need to implement a CommonUI based solution right now

[paper crypt]

ty so much for your help, i sadly couldnt get the branching bool method down tonight but im trying again tomorrow

[gentle urchin]

Thats true, and perhaps theye xposed the nexessary classes with commonUI actually...

[neon acorn]

I am starting out in Unreal...is this kind of weirdity common in Unreal and should I stop getting surprised 😅

[gentle urchin]

Theres a few of these waiting around for you 😅

[raw orbit]

is there some way i can access the list of sublevels of my current level? without manually creating some array or whatever

[regal sand]

How can I make the camera snap back to start position (behind player) with the press of a button? I can't figure it out😭

[timber crystal]

somebody knows why my projectile goes the wrong way?

[meager igloo]

How can I set Skeletal Mesh bone locations manually in runtime?

I have a bone that should also go backwards as it rotates

[timber crystal]

got it its the velocity settings

-1 in the x direction

[atomic salmon]

@meager iglooSet Bone Location by Name, but ideally bone manipulations are better done in the AnimBP

[meager igloo]

I can´t find that action in Event Graph

[regal sand]

Get the mesh in the graph and drag from it and try searching it again

[meager igloo]

Still doesn´t show up

oh does it only work on poseable meshes, but not on skeletal meshes?

[regal sand]

That idk I'm still kinda new to unreal.

[regal sand]

If anyone knows how I can fix this feel free to ping me.

[gentle urchin]

Isnt it just setting it to player control rotation?

On the Z

[raw orbit]

how do i ensure an actor is always loaded if i place it at 0,0,0 regardless of how far the player is from it? i was thinking of creating some sort of a lighting manager for my lighting sublevel basically

[regal sand]

I have the actual movement of the character in a different blueprint

Its not in the default thirdperson one

The actual clicking movement is in another blueprint

[gentle urchin]

So?

Also why not include that in yhe initial question if you think it changes anything ..

[regal sand]

Well i didn't wanna make it too long

And the other blueprint doesn't have an actual camera component only the third person one does but I can get a reference to it

I just don't know the node I need to set it to go back

I tried to set it to be on middle mouse button

but that did nothing

[gentle urchin]

No set control rot

Get

And try that as the target rot for the camera

[regal sand]

So do I just get rid of the "Set control rotation"? I'm still new to this and I haven't played around with cameras before so this is uncharted territory

[gentle urchin]

Whats your method for originally rotating the camera?

[regal sand]

It's not actually rotating

the only thing it does

is this

[wise ravine]

Hey I just finished watching a video on Blueprint Communication. So am I supposed to use "Cast To" every single time I reference another class?

[barren tangle]

Hi, is there a node that allow me to know which actor in a table has the biggest X position?

X or Y, or to know which actor is the closest to me?

[barren tangle]

no

[wise ravine]

why not?

[barren tangle]

go PM

[mighty kernel]

Casting is a very expensive operation. In BPs where you'll be referencing the same class several times it'd be better to cast once on BeginPlay and save the output to a variable, then just reference the variable wherever else you need to access something from that class

[dark drum]

Its not an expensive operation. Of course, if you're going to be need to cast the same item multiple times it can make sense to only cast once and store the new type so you don't have to repeat the cast.

[wise ravine]

Yes that's what I meant, only use cast the first time when referencing a class

[scarlet prairie]

Hey, I really would appreciate some help. Could someone tell me why the casting works in the function but not construct? Works:

Doesn't work:

More info: It's a UMC widget

[spark steppe]

when/how are you constructing the widget?

[dark drum]

If you're struggling to understand casting, it usually means you don't yet understand classes and hierarchy.

If I create a variable of type Actor, I can store any object in that var that inherits from the actor class. That object could be a chair, car or even the player character. I could instead set the variable type to Character which would mean only objects that inherit from the character class can be stored in it.

When we cast the var, we are checking to see if the object inherits from the casting type. The cast node then returns the object ref as a new type which allows us to call functions specific to that class.

You cast when you need to. It's as simple as that.

As a little advise though, you want to avoid casting chains (where you perform another cast when a previous cast has failed.) If you need more than 2 or 3, you might need to instead look at possibly using a Blueprint Interface.

[scarlet prairie]

I'm creating it withing the player bp

[spark steppe]

so that's the same player which is the widget owner?

[scarlet prairie]

Should be? It's working within the function

[spark steppe]

well, you should know better than me 😄

but idk what's wrong then

[wise ravine]

How does a Blueprint Interface take the place of casting?

[mighty kernel]

I was under the impression that casting was expensive because of the tooltip when you hover over a casting node which reads: "NOTE: This will cause the blueprint to always be loaded, which can be expensive." Does anyone have more detail on what exactly "to always be loaded" means, and/or under what specific circumstances is an individual cast expensive as the tip implies?

[scarlet prairie]

I'm completely new to Unreal, tho ^^* I assume it's getting the right player because it works within the function

[barren tangle]

Execute a "message function" and if the target meets the type condition, it will run the function

[spark steppe]

is there a reason that you use this get player controller from platform user function?

[wise ravine]

ah okay

[spark steppe]

otherwise try with just get owning controller and cast it to a playercontroller

[dark drum]

That refers to memory usage. Casts create hard references which means that BP forces what your casting to be loaded even if it's not being used. This is why you use base classes you cast to that don't have the heavy stuff like textures, sounds etc...

For example, the character class has a skeletal mesh in it but doesn't have a skeletal mesh assigned.

Also if a class is going to be loaded anyway, it's not an issue.

The reason for the message is because you can run in to problems where a single BP could force your entire game to be loaded.

[spark steppe]

or, if this is only single player, use just get player controller

[barren tangle]

you can see casting like : Something applies something on someone
you can see interface like: Something applies something on itself

[scarlet prairie]

I will try that, thank you

[lofty rapids]

if i cast to my player, since the player is already loaded does this make a copy of some sort in memory ? or it uses the same one ?

[dark drum]

If you only have one type of character the player can control then it wouldn't make much of difference as the character would already be loaded anyway. It's still good to be thinking about it though so you get into good habits. 🙂

[mighty kernel]

Got it, thanks for the clarification

[severe tendon]

I want to make a saving system that when you load the game, it goes back to the moment you saved it, kind of restarting the level to the point where you saved

How excatly could i do this?

All the tutorials I've seen dont restart the game at all

[lofty rapids]

you have items and stuff in the game ?

[dark drum]

That's not true. Casting is just a type check for an object that allows you to call specific functions for the class type on the object. (if successful)

An interface is a way of calling functions on an object without know (or even caring) what type of object it is. This is used for classes that need to share the same functions but don't have a common class they inherit from.

[severe tendon]

Yes

[barren tangle]

try to simplify that for people who don't know it, you arrive to my definition

it's the best open point to understand how to use them, after to go depper and understand what they mean

[spark steppe]

interfaces are more or less casts, too, just without all the overhead of the asset which may implement it

[barren tangle]

but you can't come with that kind of definition for new "dev"

[lofty rapids]

one way might be to have id's for items, and the ones you got in a list. but idk about the save stuff in unreal, i just use flat files and have not serialized much data yet.

[dark drum]

I wouldn't.
Cast is to call a specific function for the class.
Interface is calling a function that can be shared across different classes.

[scarlet prairie]

@spark steppe Lol, my editor crushed and after starting it again it works now.

[barren tangle]

yes

[spark steppe]

i still feel like you are doing something wrong in the code

[scarlet prairie]

[spark steppe]

the way you get the player controller is... unconvenient

unless you have a reason to do so

[scarlet prairie]

Really?

How would I normally get it?

[spark steppe]

i've never seen someone use that method

either just get player controller for singleplayer

[wise ravine]

In Blueprint Interfaces, who is the Sender and Reciever?

[spark steppe]

or get the owning controller of the pawn and cast it to player controller

[spark steppe]

receiver is whoever implements the interface

[scarlet prairie]

I get that error

[spark steppe]

show what you did

[wise ravine]

okay thanks

[lofty rapids]

get player character ?

[scarlet prairie]

Just the same

[spark steppe]

no, i meant use that whereever you construct the widget

the get owning player pawn in the widget was fine

[dark drum]

The sender is what ever calls the interface function while the receiver is the target of the interface call. (assuming they implement the interface function)

A sender can also be the receiver.

[spiral kite]

I want to remove footprints in the footprint system when a certain number of footprints spawn, not in a certain amount of time. how can I do it.

[scarlet prairie]

Oh yeah, it works in the widget

But it doesn't work ion blueprint

weirdly

[spark steppe]

ok, let's take it slow

is your project multiplayer or singleplayer?

[scarlet prairie]

Singleplayer

[spark steppe]

then replace this with GetPlayerController

and that's the only change that you should make, the widget was fine

[scarlet prairie]

Okay, I did this and the casting still fails

[spark steppe]

that's unfortunate

[scarlet prairie]

lol

[spark steppe]

can you try to add a delay until next tick node right after begin play?

so that it waits one tick before it constructs your widget

[scarlet prairie]

Lol

It works

Thanks!

[spark steppe]

i guess that actor is placed in the level?

so that was some kind of race condition, even tho i thought the playercontroller would be ready before beginplay fires... but who knows

which also explains why it randomly works, as you can't determine the spawn order

[scarlet prairie]

Thanks for your help, appreciated

[jolly hedge]

Hi i have a qustion. I am more or less creating a canon that shoots a projectile. the projectile has a hit event and if it hits the character it should apply dmg and be destroyed.

However, when i dont make the static mesh the root component it wont always apply, but when i do make it root component it always applies, why is this?

[pure copper]

Hey guys trying to take enter/exit a car and get this error when doing so. How do I remedy it?
Blueprint Runtime Error:
"Accessed None trying to read property CallFunc_GetLocalPlayerSubSystemFromPlayerController_ReturnValue_1".
Node: Add Mapping Context Graph:
EventGraph Function: Execute Ubergraph BP Gill Mrap Blueprint: BP_GillMrap

[versed sun]

Don't do this, It doesn't have a ref to Interactor in the 2nd function
You should promote to Variable the Interactor in the top event, and Get it in the 2nd

[wise ravine]

Why would I need to communication to a sub-level? For what purpose is this used?

[dark drum]

Im not sure what you mean.

[pure copper]

Hey Ryck when I do that I get even more errors for "Accessed none". Ive traced this to the Add Mapping Context on the BP_MRAP but I dont know what to add to make this error go away.

[versed sun]

Did you Set it in the top event ?
Also, right click the Get Interactor, and Convert to Validate Get @pure copper

[wise ravine]

This is a seperate question, I was referring to this video. Why would we need to use this method?https://youtube.com/clip/Ugkxnfnnlb7rAgIfi7BKL3xGXMsv0AURlC1X?si=qFSzv32MUSo0aFdy

[pure copper]

Ryck Thanks for trying to walk me through this. Tried what you just said, same error. No difference in functionality

[versed sun]

hmm, i think the err is down here

[old sonnet]

When you want to turn off tick do you do that in the general actor tab? Becuase I think components such as skeletal meshes have their own tick as well

[severe tendon]

How can i make it so that a variable decreases by time?

Like a timer

that goes from 100 to 0 in 10s for example

[pure copper]

Yup thats what I suspect too. I just don't know what it "wants" everything is working perfectly its just aggravating to see the error keep coming up no matter what i enter.

[versed sun]

does it just give error , but it works ?

Get Player controller > Is Valid?

it might run once before controller is set ?

[pure copper]

Yes gives error but everything works. How do I check for that?

[versed sun]

so , if its NOT valid , dont try to use it

[pure copper]

Dude you are my fucking hero. It worked perfectly. Thank you so much. I almost have this vehicle working exactly like i want now. Just a few more things and im done!

[wise ravine]

@dark drum ^ (in case you didn't already see my message)

[lofty rapids]

possibly a timer or a timeline

100 to 0 over ten seconds sounds a lot like a timeline

[crude tartan]

I could see components being a good solution. "One is an actor, one is a character"... sure but they're also both actors. For me, I find my interations with NPCs are so different than objects. Objects have a lot of additional functionality so I have them as their own class. Some of the base functionality of interacting (showing a widget etc.) though could be moved to a component and then used as required with the different types (i.e. NPC, Item).

[frigid summit]

finally after one week here is the spawn coins logic made by chatgpt

[trim matrix]

cool now what if you want to change something in it? there's not a single comment and you don't understand your code!!
W learning

[frigid summit]

than i wont change anything

[gentle urchin]

The generic act of interaction could still reside in a comp, even if item vs npc do totally different things

You dont need the full interaction code in the component, just the commonality

[crude tartan]

Yeah agreed. That was my point in the last sentence.

[gentle urchin]

Right, sounds like we agree then ^^

[brave isle]

Was a test in between the 8 variant ive done fprgpt to delete it, basically it does absolutly nothing. The problem still remain without it.

[tough kiln]

When you want to start decreasing, flip a Boolean on, then in tick get your current value, subtract delta seconds * decrease per second, then set your value with the result. Make sure to clamp the value and that your logic to turn it off will def get hit.

[radiant bear]

what do i do the get parallel lines like the picture i attached my results with the loop i have trail like line when i use a single socket but when i use a loop well you see the results!

[gentle urchin]

Youd want a vector array

Of the same size as the socket array

And store the last socket position in that array

[radiant bear]

like instead of getting socket location i pre store their location?

[gentle urchin]

Once per frame

You store their previous location

[gentle urchin]

Thats just one.

You want an array

And "setArrayElement"

With the same index as the socket index

[radiant bear]

one sec

let me do that quick

[gentle urchin]

First frame you only cache them. Next frames you trace between current and cached

[versed sun]

I think like this

First frame, the Previous will be empty , so no linetrace

[gentle urchin]

Perfect^

[versed sun]

Draws line from Prev(0) to Current(0) , Prev(1) to Current(1) etc

[gentle urchin]

Personally i wouldnt clear

But i guess thats safer

[versed sun]

without clear , it would re-trace everything each frame

[gentle urchin]

Wait.

Not like this

Perhaps this works aswell

I spoke to soon.

No reason to cache the socket locs one extra time

Especially not each frame

I assume this really is triggered from a animNotifyState

So we got a start, a tick, and an end

[radiant bear]

yes

[gentle urchin]

So id basically gate it with a branch

Start -> set bFirstFrame to true

Tick -> branch(bFirstFrame) -> true -> cache locs -> bFirstFrame = false

.. -> false -> trace from cache to socket loc

Possibly enable / disable tick at start/end

Depends on if you need it for something else

[radiant bear]

wouldn't previous locs be empty the first frame?

[rotund bronze]

Hi there, I've been attempting to add corner correction to avoid bouncing away from corners but SetActorLocation causes some jitteriness. Is there a way to smoothen the movement between locations?

[radiant bear]

and throw an error?

[gentle urchin]

Predict the collision

[versed sun]

yes, and that would make the For Each loop not fire, no error

shouldnt error

[gentle urchin]

Yesh foreach is safe that way

[radiant bear]

i mean that!

[radiant bear]

true only in bp but i got what you mean!

[gentle urchin]

Its true in c++ aswell,

That it wont run. Not sure about throwing errors

[radiant bear]

i mean if it's an index out of bounds it just crashes

[gentle urchin]

Yeah but thats not a foreachloop :p

for (auto& Elem : Array)
{
 //something
}

[radiant bear]

so what do i do for the previous location when i was doing it for a single socket i just set the endloc to start loc after the line trace

i do same here?

[gentle urchin]

Yepp

I think thats correct

[rotund bronze]

Sorry, how exactly? I've been using raycasts to predict collisions but I'm guessing you mean to test for collisions at the new location before moving there?

[gentle urchin]

Raycast yepp

[radiant bear]

@gentle urchin you there man?

[gentle urchin]

Yes

But looks like you followed Ryck0s suggestion^^

[versed sun]

https://tenor.com/view/rocky-rockybalboa-adrian-yelling-beat-gif-7217212

[radiant bear]

yes, and it didn't draw anythin prolly cuz there's too many elements in the arry

[rotund bronze]

Ah yeah that part seems to be working okay, I moreso meant how the sudden change in location causes some jitteriness.

[versed sun]

my will should work just fine with 1 socket

[radiant bear]

and clearing it as he suggested would mean the array would always be empty

[radiant bear]

ohh i mean i had no issues with one socket!

[versed sun]

Clearing your Current positions so they can get re-assigned next frame

[radiant bear]

i just use the sock loc and after trace i set endloc to sock loc

with gave me a tail like line

[gentle urchin]

With the trace you can interp the offset over a few frames and not instantly

[radiant bear]

i wanted to do it withmultiple socks each like parallel to eachother!

[versed sun]

does that not ?

[radiant bear]

you mean the one you suggested?

[versed sun]

yes

[radiant bear]

yes that's what i set up based on you suggestion!

it doesn't prolly cuz the array has add 50+ element each trigger

if i clear it as you suggested then each frame the array would be empty!

[radiant bear]

did you test this on your side?

[gentle urchin]

You cache it first each framez so it wouldnt be empty

[radiant bear]

aright one sec

[versed sun]

testing now

[rotund bronze]

Can you use VInterp between the current and new location?

[gentle urchin]

Sure but you need a few frames for it

So you gotta start it before it needs to be done

[radiant bear]

something like this

this is set at the start of a notifystate

and at the end to fales

[gentle urchin]

Clean

Almost like anim substepping 😄

[gentle urchin]

This method usually breaks as soon as you have low framerate

[radiant bear]

same as this one?

[versed sun]

Im useing tick because i dont have anything in project that is animated

[versed sun]

yes

[radiant bear]

that's okay just asking!

[radiant bear]

so what did you for previous loc?

i mean it's empty always right?

[versed sun]

yes , first frame Previous Locs is empty,, but it gets set to the same as Current Locs

[rotund bronze]

Thanks I'll try it out, although not sure on how you start it before it's needed. 😅

[versed sun]

so 2nd frame , Previous Locs = the frist frames locs

[radiant bear]

i think the first pick you sent was little blury i thought you cleared both array!

[gentle urchin]

You define "needed" as a give distance before the collision

You assume their intent and guide them a tad

Id have two values. One for diatance for start moving, and one for max moving

So if they're to far from the edge id just ignore it

[rotund bronze]

Ahh okay gotcha thanks

[radiant bear]

perfect man!

[versed sun]

https://app.screencast.com/GtZAukYaGSsIk in action

[radiant bear]

Don't mind the logs it's all fixed just need to remove the logs😅

[gentle urchin]

Now

Set t.maxfps to 5

[radiant bear]

yea i know it's Frame rate deepened

[gentle urchin]

Ive seen plugins do some anim substepping tonsolve itn

[radiant bear]

i'll have do a work around for thar, prolly subdivision based start and end locs and

[gentle urchin]

But at 5 fps game is unplayable anyways 😅

So not sure it really matters

[radiant bear]

just incase!

[gentle urchin]

Minimum playable is +20 fps id say

[radiant bear]

def!

[gentle urchin]

Which is a stretch

[radiant bear]

i guess that could be a start!

[elfin nimbus]

Hello! Does anyone know how I could make essentially a pointer for widgets to use with a VR controller (exactly like the debug line of WidgetInteraction), trying to learn how to make interfaces but I cant figure out how to make a simple dot show where im pointing... I know theres the get2DhitLocation but how could i draw the dot after?

[sharp rapids]

I'm using Instanced Static Mesh to spawn some Cubes and then move them towards a location using 'Batch Update Instances Transform'
This works but the moving cubes have no collision with each other?
They can block other actors from going through them, but they themselves pass through other actors
How can I prevent this?

[dull shell]

I guess trace manually before moving to check if the there is nothing blocking cubes from moving

[south ravine]

I made a mistake where I created an infinite loop in a blueprint which causes the engine to crash. It also crashes when starting the project. What are my options to restore the access to the project and fix it?

I could try deleting the blueprint, but then I loose it.

Any way to safely run the engine, and prevent constructions scripts to run?

[gentle urchin]

Rename the bp 😅

Itll break but you might still be able to open it

might

[south ravine]

I managed to fix it, since I'm just starting it wasn't a huge loss as I only lost one test actor.

I'm trying to figure out how to rerun construction scripts.
It updates on:

• drag (setting)
• when placed
• when finished dragging
• when an instance editable is set

But what if I have a spline component that I update. The script does not seem to rerun the. What am I missing?

[gentle urchin]

Its not ran on component changes

Editing spline is a component change

[south ravine]

Yeah I understand, but what's the common practice here!? I want to build a road system, how would I auto update the generation after updating the spline component. 🤔

[versed sun]

you can make functions/events Call in Editor

[gentle urchin]

^

[versed sun]

Makes a button you can click on to run your code

[south ravine]

So there's no way to automatically rerun the construction when updating a spline component? 🤔

I already added a button that calls into a c++ function to rerun the construction script, but that feels somewhat tedious to do every time.

[gentle urchin]

I think you can hook into it in c++

Perhaps even enable it as default for that actor ... #cpp would know

[south ravine]

okay that's interesting, I just checked this video to see when the road updates on their spline

https://www.youtube.com/watch?v=bNOJrEOgH0Y&t=530s

for some reason they update the spline by selecting the actor, not the component

is that perhaps a special logic?

[gentle urchin]

Is the spline the root component ?

[south ravine]

in the video it's under the DefaultSceenRoot

[gentle urchin]

Hmm.

I feel like ive seen a bool for comps to trigger actor constructionscripts

[versed sun]

Class setting of Component

[sharp rapids]

That would be very performance intensive imo
I'm talking about 500 instances moving at a time

[gentle urchin]

Can do 500 traces

Your options are limited

You might wanna frame slice it a little, for the price of some accuracy

[rotund bronze]

Got it working, thanks so much!

[gentle urchin]

Final solution was? 😄

[rotund bronze]

VInterp seemed to do the trick, had to play around with the Interp Speed a bit

[south ravine]

the component doesn't have this, the blueprint class setting has that setting which is ticked by default. In the linked video above they always have the bp actor selected in the outliner. They can individually select spline points and drag them around without the the details panel to switch over to the spline component. 🤔

[gentle urchin]

Try it as root

Just for kicks

[versed sun]

ISM aren't made for moving around ... I change ISM instances to Static meshes, move them, then convert back to ISM

[gentle urchin]

Isms move great in my experience

5k a pop

[south ravine]

that actually works 🎉

[versed sun]

move with collision ?

[sharp rapids]

But I want to move them constantly
Basically Vampire Survivors where enemies are ISMs

[gentle urchin]

Nah without :p

Ill add custom collision checks very soon

[gentle urchin]

They barely have collision 😆

[south ravine]

thanks everyone, I appreciate the support 🙂

[sharp rapids]

But they do not overlap onto each other, there must be some kind of collision
Currently, in my setup, all the enemies just merge into one eventually when chasing a target

[gentle urchin]

Avoidance

Cleverly done

[white oxide]

Hey everyone I need some help with the logic of this jump system, it still double or infinitely jumps. Here's the logic break down and the script:

Starts at the world location of the capsule collision and ends at upvectory times return value times trace distance times 0. This enable ray tracing at the bottom of the egg always.

Then we extract data via hit result and check if jump detection is greater  than or equal to 55 in order to determine the distance against the ground.

Next we set jump detection to true if it is in fact greater than 55 and false if less than.

Next we apply impulse if jump detection is true.```

https://blueprintue.com/blueprint/1sawr-py/

Let me know your thoughts on this

[gentle urchin]

Not using built in jump are we?

[white oxide]

I built a custom pawn, the character component wasn't working for my purposes

[gentle urchin]

The trace only accounts for initial jump(if even)

And if dist is >= so ofc it alloes multiple jumps

You reset the detection the same frame..

You want to retain jumped status untill you've landed (or done something that should reset it)

[white oxide]

Right right, I've made those changes but now my ray trace only works on the first frame... any thoughts?

[gentle urchin]

Why is there jump detection in the first place?

Isnt that simply Jump() ?

Jump(-> apply force -> jumping = true)

If anything you might want ledge / fall detection

[nocturne fossil]

when i hit some objects with line trace with character i want to change the blendweight of a postprocess, how can i do that_ cant call events on lvl bp

[gentle urchin]

why in the.. would that be in the level bp

real tip: dont use level bp

[rain wraith]

Is there a way I run an exec based on if a particular pawn is possessed? Event Possessed seems to not work properly for my setup - I believe it's because I'm using the same Player Controller for all the pawns. The "RecordedLocRotData" string is being printed even when the HumanPawn is not possessed in this case

[gentle urchin]

Read above

[bold cypress]

Hello, I'm new to this and i realize this is a pretty beginner question, but i can't really find any tutorials on youtube or in the forums that explains it. I have an invantory system that uses a vector point infrount of the player to target an item to delete/add it to invantory. I was only able to get it to work by "Get actor of class" I want this to work for all items using my item parent class, but to use get all actors of class you need an array, but i am using an equal blueprint to check the actor hit. Do i need to change what i am checking or something?

[gentle urchin]

You want to comparenclass if anything

[bold cypress]

so get class of actor hit then check if equal to arroy coming from get all actors of class?

[gentle urchin]

Id suggest doing some proper encapsulation of the logic and move the responsibility of what happens if the item is interracted with

To the interracted item

[lofty rapids]

that event possessed is on the controller ? mine says pawn not controller on the event

[gentle urchin]

So pickups can be picked up, doors can be opened, traps can be activated, by the very same interaction logic (seen from the player bp)

[bold cypress]

I sorry, i neither under stand how to do that nor what it means, do you have a tutorial you recommend on learning it?

[rain wraith]

Key input in level blueprint executes Possess HumanPawn, then in HumanPawn there is the Event Possessed exec being fired into a timer event for print string

[gentle urchin]

The char should care what it interracts with, it simply wants to interact

[lofty rapids]

right so the problem is the timer doesn't stop ?

because the event should fire when you possess it, i just tried it out seems work fine

but your timer may keep going

[rain wraith]

Problem is that timer starts before the pawn is possessed

It starts as soon as the level begins

[lofty rapids]

and those events are on the humanpawn ? and they are firing off early ?

idk when it "really" fires off, but i would guess on possessed

[rain wraith]

The event is in the HumanPawn. All the level blueprint is doing is possessing the HumanPawn when a key is pressed. The event is firing as soon as the level starts instead of when the HumanPawn is possessed

[lofty rapids]

what is your default pawn in world settings ?

[rain wraith]

I have it set to another Pawn, SpectatorPawn. The SpectatorPawn does not have the same event code that the HumanPawn does

[spiral kite]

I want to remove footprints in the footprint system when a certain number of footprints spawn, not in a certain amount of time. how can I do it.

[white oxide]

What could be causing my ray tracing jump to double jump?

[lofty rapids]

where do you set the boolean back to false ?

[white oxide]

After jumping

[gentle urchin]

I still dont get why this is a trace

[lofty rapids]

after pressing the key, or when does this execution run ?

[gentle urchin]

Trying to make it constantly jump?

[white oxide]

After pressing the key the boolean is set to false

[lofty rapids]

you can double jump at any distance ?

[faint pasture]

If you're using physics you want to use Event Hit to detect when you're back on the ground

start drawing the event hit hit impulse and normal and you'll figure out how to proceed

[white oxide]

Yeah I was trying to do line tracing but this seems to be the best method

[turbid hound]

im trying to get a smooth transition from 179 to - 179 the character is looking behind and when the player rotates the mouse past tipping over the -179 i cant work out how to get the character to smoothly turn head and not just snap

[quartz spoke]

is there a way to get landscape/terrain heights along a predicted path/line for an actor? I'm working on a dash ability, and i want to modify how much Z axis launch is applied based on what might be in the way of the actor. A ton of line traces would maybe work, but seems hacky, and could potentially miss local maximums in the landscape

for example, if i were to activate the ability here, i'd barely move without taking the landscape height into account

[versed sun]

you might be able to play with Predict Projectile Path to help get what you want
you could maybe have some preset Launch Velocities. You could loop thru and Predict each once to see what would give you best result

[quartz spoke]

oooh you don't even need to spawn in a projectile to use that functionality? Sick i was thinking i'd have to spawn in an invisible projectile or something

ok this is really interesting, i'll look into what kind of data that prediction returns

tyvm! Much appreciated

[versed sun]

nah its fairly instant , as long as you dont use too many Sim Frequency

I used it to preview Launching myself in a catapult

[quartz spoke]

I'm not sure what that means, but i won't be firing this off a ton of times in a row or anything

hahaha sick

[versed sun]

Its how many preview points are on your arc, you only need the end point

[quartz spoke]

oooh right, so if the end point is super close to the pawn, we can assume there's something in the way and adjust the launch accordingly

[versed sun]

you got it

and whichever gets you farthest/ closest to goal is the one you use

[quartz spoke]

👌 perfect

this'll be handy in the future too. Thanks so much :)

[versed sun]

my brain thinks something like this

[quartz spoke]

So we'd always be launching the player with the velocity that gets the furthest distance?

[versed sun]

1 way of doing it

[quartz spoke]

wouldn't that always return the same launch? Whichever has the highest X/Y values?

Err, hmm i suppose you could have your Velocity List contain launches for like "long and low to the ground" and "short and higher off the ground" type velocities

[versed sun]

i think uphill a higher Z would help , downhill a lower Z
might have a tree in front so launching too high would hit it so a lower launch is better

exactly,

[quartz spoke]

riiiiight ok

[versed sun]

and build them right before depending on your char rotation

and give air control to make it fun to steer

[quartz spoke]

ooo you're so right about the air control

nothing better than swerving through some bad guys

[versed sun]

yup

[quartz spoke]

i should be able to get something working with this :) ty again

[tawdry walrus]

is there any node that can download the contents before the game starts?

[dawn gazelle]

Download what contents? Before what part of your game starts?

[tawdry walrus]

In the main menu, downloading meshes and compiling shaders.

I will try to use the ChunkDownloader plugin.

[swift bough]

Is there a common way of creating a semi-paused game state? Like for example opening the inventory pauses the game clock and all npc movement, but you can still interact with the inventory, organize chests, and the surrounding ambient sounds and music continue? The only nodes I know of are the Set Game Paused and Set Input Mode ones, but neither really accomplishes that.

[obsidian coral]

your widgets and actors have a TickWhenPaused flag you can set.

[rapid crown]

Hey guys! Is there a way for a blueprint actor to not evaluate while in editor? I have a heavy BP actor and it keeps evaluating in the editor and making it working in the editor next to impossible due to the lag. So I was wondering if it would be possible for the BP actor to be placed and then not "evaluate" itself every time a change in editor is made.

[white oxide]

What's the equivalent of character for a pawn inheritance?

Get player pawn

[dawn gazelle]

You technically wouldn't need to cast for that particular function. OnDestroyed is an event dispatcher that exists at the actor class level - The return value "get player pawn" should be sufficient to plug into your OnDestroyed bind.

[cold brook]

hey everyone, how are you? happy sunday ❤️

does anyone know, why all of a sudden, my character will not move or look around when running the game in the editor? here is the blueprint for the character. this issue is rattling my brain because i do believe im pretty good with ue5, im sure its something simple ive overlooked.

is there anything i need to do with enhanced input action setup?

again, im pretty confident with these tools and its absolutely stumped me.

[dawn gazelle]

I think you need to connect to "Triggered" or "Ongoing" instead of "Started". If I remember right, started will only fire one time, where your movement input needs to be continually firing.

Apart from that, are you certain your character is being possessed?

[cold brook]

thanks Datura, I did try that, however none of them are working. Yeah I double checked game mode etc, I have widgets running on the char BP that are working. I just cant move or look lols

[dawn gazelle]

Set up / init your input mapping context somewhere?

[cold brook]

Unsure how to do that/ what that is.

I just connected the inputs to logic in the char BP

and setup IMC

Ahhh that fixed it

I forgot to initialise the subsystem... thanks @dawn gazelle ! ❤️

[short phoenix]

I have an animation state in the mannequin's AnimGraph that transitions based on a boolean variable in the graph. How can I toggle that boolean from the third person player controller event graph? Is there some other method I should use to trigger it? It's a one-shot victory pose for now, but ultimately it would be an attack animation.

[dawn gazelle]

You have your animation blueprint read the value from the owning character in the "Update" event and set a bool value in the animbp. You'd then use that animbp bool to drive the state change.

In otherwords, the character has the state, the animbp reads the state and sets its own bool for it, the animbp bool then controls the animbp.

[short phoenix]

Wow that's pretty wild. That's backwards from how I figured it would go.

...and with that I got it. Two hours of my life.

[craggy flicker]

How can I make comment section titles larger whenzooming out?

[gentle urchin]

You cant

[craggy flicker]

yea i figured :/

[gentle urchin]

But theres an option for showing iit as a bubble when zoomed out

[craggy flicker]

wish it dynamically sized

[craggy flicker]

how tho

or where's the option

[gentle urchin]

Select the comment

Details panel on the right side

[craggy flicker]

cause my third person blueprint is getting pretty large lol

ty

[gentle urchin]

Where you change color etc

[craggy flicker]

that makes it 100x more manageable

it's getting pretty complex lol

[gentle urchin]

Colors help aswell

If you manage to stay consistent^^

Also functions

They're amazing

[craggy flicker]

yea I only recently got into making functions for the other systems

I plan on adding colors to coordinate with specific systems when i integrate more mechanics

[gentle urchin]

Also, seems like your char is responsible for more than it should regarding pickups

Its usually cleaner to separate put the logic of "what happens if this is X" inside X bp

[craggy flicker]

yea so I would love to make this separated into my existing Inventory system, which is the Inventory widget along with the graph and functions

[gentle urchin]

More maintainable and expandable aswell

[craggy flicker]

i'm working on making things more modular

[plush cosmos]

I recently learned that view bookmarking in BP editor is also possible. You can zoom in on certain parts of your BP graph and mark the position with CTRL + 1-9 (not keypad) and then quickly switch to bookmark locations you want to work on by pressing Shift + 1-9. Perhaps you already know that but it's worth sharing anyway.

[craggy flicker]

appreciate it!

[timber crystal]

does anyone know how
I can eliminate this overlapping flickering effect in the background?

I'm currently using a tile map separate from the platforms that I've added as a background

So it's not all in a tile map, but that's how it was before and I had the same problem

[sharp steppe]

If I want to detect if an enemy is in proximity, is a line trace or attaching a collision sphere to a player less expensive?

[fast finch]

I have an actor compoent, with an ower, and i want the component to be able to execute or signal the parent that something happened.

Is there a good way todo this?

[gentle urchin]

Event dispatcher

Owner subscribes to it 🙂

[fast finch]

do i have todo this up or down?

i would like todo this up

i want the component to handle itself and its master

not the other way around

i dont think this will work...

[gentle urchin]

Ypu dont want the component to own an event that belongs to the master

[fast finch]

ah shit

[gentle urchin]

This also implied that the comp must know the owner

[fast finch]

i just noticed that i could just use a cast when i am using a cast already...

[gentle urchin]

But why would you.....

[fast finch]

because then i can make an interface later...

😄

i am so stupid

[gentle urchin]

You dont need either of them...

Just use a dispatcher

And let the owner do what owners should do.

If theres something they should react to, they should implement it

[outer brook]

hey folks, can anyone help me to figure out the correct way to "spawn" an "NPC actor" with a custom "AiController" and "BehaviourTree"?

i figured out some things but struggle with the correct order of function/event execution so that the NPC gets spawned with i cutom "AiController" and a cutome "BehaviourTree"

[gentle urchin]

In the npc settings you can set its default AI controller, and ifnit should be spawned automatically on spawn

[outer brook]

yes i did set my custom AiController as default controller in the Actor. it gets strange at the point where i try to "GetControlledPawn" in my custom AiController which tells me is "none"...

i also did set "Auto Posses AI" property in the NPC actor to "Spawned"

to specify my situation: the NPC gets spawned, but the "GetControlledPawn"-Function gives me none when i try to use it, which i do realy need in order to get and set the BlackBoard-Values of the referencing BehaviourTree... at least i think i do need it to do like that...

[summer nexus]

How do I make a Curve on runtime?
how do I add values to "Float Curve Structure" ?

[gentle urchin]

not sure you can in bp only

runtime float can add in defaults or external curve pointers

if you do any c++ you can make function for it

not straight forward to edit them tho

[lilac storm]

hi there when i am duplicating a skeleton , some bones are getting like this "The Bone exists only on the skeleton but not on the current mesh." and all the sockets atteched to it i can't really move , please help spent already 2nd day on it

[twin plinth]

How can i keep applying damage if character still in the zone?

I know i can use event tick but idk is it the most optimal way

[summer nexus]

I just like to make a curve and then get the value from the time line is there any other way to do it in BP @gentle urchin ?
Found the c++ code here https://forums.unrealengine.com/t/how-to-get-a-value-from-a-runtime-float-curve-structure/146059/4

[versed sun]

Here is a basic setup to do 10 damage every 1 sec while overlapped

[versed sun]

how many points on the curve? i have a system that makes a curve from 3 points

[lofty rapids]

there is an edge case here, where if something else end overlap, it will cancel it

[versed sun]

yup, basic setup
lots of checks and such to do

[lofty rapids]

makes sense

creating a blueprint function library in c++ was fairly simple starting with blueprint project, it just changes it to c++ and you load up the ide first instead of editor

if you need some functionality that c has, BFL ftw

[grim sand]

Does anyone know why a "Get Controller" node inside a player character BP could return null in a multiplayer scenario?

I am using a BP interface to set the reference inside of the player controller, yet on the client and on the server, we are unable to get a reference based on the Get Controller node

[grim sand]

What is especially strange is that I have the exact same code in a different multiplayer project and there it works absolutely fine

[gentle urchin]

Controller may not exist yet

And that BPI looks whack

Why is it even there 😐

Cast to your playercontroller instead

[grim sand]

Was following a udemy tutorial on multiplayer dev in UE5 and the tutor recommends to use BPI's for getting the reference instead of casting because casting will slow down the load time

Now I know that casting only gets problematic when you are doing it dozens/100's of times, but didn't want to immediately deviate from the tutorial

[main lake]

Is it possible to hide these "LevelData" stuff ?

[gentle urchin]

Casting is mostly bad when you cast to something that may not be loaded

Controller will always be loaded

[grim sand]

Changing it to a cast produces the same results I am afraid

[gentle urchin]

You also create a hard link between the bps in question but thats another issue/consideration

Beginplay is not really suitable for init in multiplayer

You can try event possess instead

[grim sand]

You could filter it out of your content browser view using the 3 little horizontal stripes in the top left of your screenshot, but not sure why you would tbh

[grim sand]

Ah okay, I am gonna change it to onpossesed to see what happens

[gentle urchin]

For server stuff

Or onSwappedController

Or something similar

[main lake]

Because I don't like seeing those as I never use those but I click on my levels most of the times to open them, so it will reduce the cluter there

[grim sand]

Right I see, then yea maybe you can filter it out or you just place them in a subfolder

[grim sand]

Right, but how would this then work on a client?

[gentle urchin]

Try the other event instead

Onswappedcontroller or whatever

[grim sand]

Still the same issue it seems

[gentle urchin]

Not possible😅

[grim sand]

I also tried adding a delay on an isvalid macro to see if ultimately the reference would become valid, but that also wasnt the case

[gentle urchin]

Print displayname of getController

[rapid crown]

Hey guys! Is there a way for a blueprint actor to not evaluate while in editor? I have a heavy BP actor and it keeps evaluating in the editor and making it working in the editor next to impossible due to the lag. So I was wondering if it would be possible for the BP actor to be placed and then not "evaluate" itself every time a change in editor is made.

[grim sand]

Results:
Beginplay = No displayname is printed (null)
Event Possessed = Print string is never fired.
Controller Changed = Print string is only fired on the server and prints nothing (null).

Also, just for reference this is the full code in the project where it works flawlessly:

[gentle urchin]

Sounds like ur not possessed

Also, you csn get the enhanced suubsys from playercontrollet

[grim sand]

And this is the code of the non functioning project

[gentle urchin]

Always cast as high as you can/need

Sounds like possession is not happening tho

[grim sand]

Yea that must be it

Also AFAIK you cannot get the Enhanced Input from the Get Controller, seen as it is a Player Controller system. But I cannot just get player controller, because then I need the Local ID of each of the local player controllers

[gentle urchin]

Get controller -> cast to playercontroller

[grim sand]

Right so when I do that, and I take the Receive Controller Changed event, the reference is valid, yet it still cannot retrieve the enhanced input system

[gentle urchin]

If its on server then no

Dedi server*

[grim sand]

Its a listen server setup at the moment

This is the code for possesing the character

It gets called from the gamemode on the server

So I have definitely run it through the server before I come here. Print strings confirm that is what happens too

[gentle urchin]

These interface events makes me cringe 😕

[versed hornet]

just cast to everything 😎

[gentle urchin]

This spawn event is in the pc?

[grim sand]

Yea

[gentle urchin]

No need to cast a hard ref thats already the correct type

[gentle urchin]

Server or client side?

[versed hornet]

well then why use an interface?

[gentle urchin]

No clue

Beats me

[grim sand]

PC sends event to GM server side to verify if we are allowed to spawn anything. After confirming, GM sends signal back to PC at which point we follow the above logic

[gentle urchin]

So... server side?

[grim sand]

Yea

[versed hornet]

you don't need an interface for that if that's what you mean

[grim sand]

I have removed the interface as I realise it is obsolete

[versed hornet]

also do any of you know enhanced input

i got a weird bug

[grim sand]

Completely bypassing the spawning and possesing logic and letting the gamemode take care of it also does not solve the issue

which is strange

[gentle urchin]

Valid default classes in gamemode?

[grim sand]

Yea nothing in the default pawn, as I am spawning those later, and the player controller class is also the right one

[gentle urchin]

Then the gm cant do that for you atleast 😅

[grim sand]

I don't understand. All the GM is doing is getting a server verified spawn transform, who then passes it on to the player controller that requested the information

and I can see the characters spawning too

and it works perfectly in the other project, which confuses me quite a bit

[gentle urchin]

It does sound kinda strange

[grim sand]

oh my god, I found it

and it had absolutely nothing to do with multiplayer

🫠

[gentle urchin]

😂

Tell me tell me

[grim sand]

There might have been a function output node not passing on the correct integer for setting the game input mode

So I was only controlling the UI, which meant I thought I could not control the player because the ref was wrong

So now it works on the client

[gentle urchin]

😆

[grim sand]

but not yet on the server

[gentle urchin]

Neat

Progress atleast

[grim sand]

probably because Set Input mode is a client only thing

Yea indeed

my god, I hate it when these types of bugs happen, they cost so much time, only for it to be such a small issue

Controller reference is still not valid though on the server

[dark drum]

An interface is for when you have different classes that don't share a common parent but need to have the same functions.

[gentle urchin]

Something about your logic is flawed 😅

[lunar sleet]

#multiplayer is no easy gig

[grim sand]

Yea it really isn't 🫠

[weary marsh]

I'm sure this is a FAQ but ... Any one not happy with the right-click / drag on blueprints for a few versions now ? It seems since they moved to the enhanced input system, this has affected how I can't drag my blueprints efficiently anymore without the context menu appearing before or after the drag ...

[grim sand]

This doesn't happen for me in 5.3.2? Maybe your mouse is adding an extra click input? I had that a few months ago, had to replace the mouse

[weary marsh]

Hmmm. You're probably right. It was still a relatively new mouse.

[gleaming wolf]

hey devs!! this is a stupid one... so basically I am trying to get the normal from the line trace and the image is how I am doing it... however, the debugged angle of the normal is not what I was expecting coz its more than 90 degrees between the player and the normal line... what could be the issue

[gentle urchin]

You're inverting the in angle

So exit angle is the same ,

Its 90 between if you aim at 45

[gleaming wolf]

its the same from every angle

basically, regardless of where you start the ray from... it points towards the same direction

see this

this is no way a 90 degree

[lofty rapids]

probably because a normal is normalized and your going to those coords is probably around 0,0,0

[versed hornet]

you are getting the parkour arrow (the blue one) from it's world location yes? Where are you spawning the parkour arrow? Where is start pos and end pos going to?

[gleaming wolf]

not sure if thats the case coz the dot product is somewhere like -480:

[barren dove]

Hey folks, dumb question
I have a data table, I want to dump it into an array of structs, all the data table nodes i'm finding is like "get a list of names"
is this possible or am I not supposed to use them this way? lol

[gleaming wolf]

the parkour arrow is basically a child of the player... so when the start position is the forward vector of the arrow... and end position is just a straight line

and the blue line is the normal which this is producing on hitting the block

[gentle urchin]

Unreal 90 degree

Jk

Ur right, and as pointed out its normalized ^^

Its a direction vector not location vector

Hit loc + (hit normal * 100)

[gleaming wolf]

my brain farts now🤢😂😂

[gleaming wolf]

lemme give it a shot

[wise mantle]

im prototyping a mirror based puzzle game, and since not all people have rtx cards, i cant use ray tracing.
i also cant use sphere reflections cuz i need to rotate the mirrors in the game, and they also dont give a good reflection when mirrors are used as the main object in the game.
planar reflections works fine, but problem is that when i have multiple mirrors, it creates multiple duplicates of the level for each mirror, which ends up lagging.
so my last idea was like in portal, use cameras with clip planes. this would work fine in theory, problem is that i have a bunch of problems with the camera rotation and such. this can be seen on the attached images.

since i havent found any info on this online, if this ends up working, i'll make a youtube video on it.
any help would be appreciated!

[dark drum]

You might be expecting the impact normal as opposed to the normal.

[gleaming wolf]

not sure if thats the one... coz I tried using that as well instead of the normal vector... but the result is the same

[gentle urchin]

Thats also normalizedn

[dark drum]

Having multiple cameras would be the same as using planar reflections. Each camera would have to render the scene multiple times. (just like the planar reflection)

[gentle urchin]

So same thing applies

[gleaming wolf]

this is what I did

and this is the result:

[wise mantle]

yea, but if i remember correctly, planar reflections create a duplicate of the level for each instance, while using cameras only use one level

i could be wrong tho

[dark drum]

As far as im aware, planar reflections don't duplicate your level. It just has to render the level again from it's perspective.

[dark drum]

Are you trying to do bounce direction?

[wise mantle]

re-reading the documentation yes you are 100% correct 😅 . it says it just renders the scene twice, and i completely misunderstood that. thanks! 😄

[gleaming wolf]

I am just tryingto get the 90deg angle from the hit

[gentle urchin]

Always 90?

Cross of cross

[dark drum]

Why 90?

[gleaming wolf]

I believe normal is exactly what it means in physics terms

[gentle urchin]

Cross of initial direction and hit normal. Then cross of the result and initial direction

[gleaming wolf]

like this

[gentle urchin]

Cross(direction,Cross (direction, normal))

[gleaming wolf]

aaah!! I will gieve it a go

thanks for the tip😋😋

[gentle urchin]

You got silent. Did it work?

[haughty iron]

Does anybody have a better way to build out this data asset library ? It’s a list of about 350 cards and I’m currently on 51, I was thinking if I imported a the excel sheet as a data table I could create an editor widget to run through the data table and create the data assets along with their needed data but wouldn’t know where to start. Also is this a good way of doing it having 350 data assets 😅

[weary marsh]

You could import the table as CSV.

[haughty iron]

That’s what I planned on doing but how would you create assets using blueprints ? I’d need to loop through the data table, get the stats and create asset at the correct path location eg - CreatureCards_Set01_Fire_Common then the asset by getting the name from the table DA_CardName then with this new asset add in all the data, I could finish doing it manually just thought they’d be a quicker way

[weary marsh]

Hmm yeah. I gotta look deeper into this.

I think you would need to use something like the Construct Object From Class node to which you pass your typical card class.

[haughty iron]

Yeah I had a look at the python script executor, you could run a script to but you’d have to edit the script each time it ran to set the cards to the correct location

Use an append node to set the correct location and then run the script but I’ve never used it before

[weary marsh]

Unfortunately I cannot see how to save package other than in C++. UPackage doesn't have any UPROPERTY decorator.

[languid hemlock]

Does anyone know how to make this work?

I tried /Game for Package Name but it always returns empty array

[languid hemlock]

I've read dozens of topics, but none of them have been able to use it. Does it really not work?

[haughty iron]

You have to search for a class reference with that one

Make a variable of class type and then plug that in to the class path name I believe

[languid hemlock]

am i doing it wrong

[haughty iron]

Yeah I think it’s get class name off of that pin, I’ve got the setup at home but I’m at work right now other wise I’d have the exact answer 😂 I’ll be home in a few hours if you haven’t got it by then

[gleaming wolf]

Phew!! finally I got it to work!!! @gentle urchin 😛😛 actually I was going with the wrong approach... Actually I am working on a parkour mechanic and the reason I wanted to get the normal was to calculate the vector at which the player will grab the platform edge... however, I figured out that the problem was that even if I managed to find out the normal, how would I manage to figure out which direction to project it on... coz for climbing the normal has to be a +ve on the Z axis... which is why I decided to go with the bounds approach... now I am calculating the bound from the hit location to the top extent that gives out the distance

[lofty rapids]

If i have an actor loaded in the level, and inside another actor i cast to that actor, this will not make a copy ? or when does it actually load another one ?

[languid hemlock]

I'd really appreciate it :)

[gentle urchin]

Actor A gets loaded when Actor B who hard ref A is loaded, or when A naturally would be loaded if B is out of the picture

Not really the instance either, but its cdo or smth

Which can be basically nothing if you have an asset free parent class

[haughty iron]

Just a tip I’d probs try and use an interface for something like this instead of casting

[nocturne basalt]

devs, help needed! I have two timelines: one opens/closes door and another which moves lift up/down. At pic1 there is only up/down animations, but when I add door animations (pic2) both start playing at the same time. How to make them work one after another, w/o delays?

[noble harbor]

I’ve created a custom player BP from scratch (for the learning experience I guess). Whenever I create a new level and try to drag the player BP into it from the content browser, I get an exception access violation crash when attempting to play in the editor that points to UCharacterMovementComponent. I don’t get this crash if I simply duplicate a level that already has the player BP in it and play that.

I’m using the third person template game mode and I have set it to use my custom player BP by default. If I use the third person template BP and have the game mode use it by default, there is no crash. So I’m assuming the issue is with my custom player BP. Any ideas what could cause this crash when dragging it from the content browser but not when duplicating a level that already has the player bp in it?

[trim matrix]

Is there a reason you used tons of magic numbers in the vector?

[nocturne basalt]

I'm gonna come back here later, had I few problems with relative locations so that's why

[visual crest]

I want this to be true of the actor is looking at the self ref (spell) but I am not sure exactly how to do that. I think it something like if less then 35 and greater then -35 but I am not sure

[noble harbor]

Wouldn’t you just see if the actor’s rotation matches the look at rotation to see if they are looking at it?

[visual crest]

oh yea that works sorta but it to precise they have to be looking at it exactly I want it so if they are looking at it within a 35-45 degree arc.

Think like if you are looking at a bright flash light. If you are sort of looking in its direction it blinds you if not it don't effect you to much

[noble harbor]

Gotcha. Once you have the floats in the look at rotation I think you can use nearly equal and mess around with the error tolerance node to get what feels right

[dawn gazelle]

Isn't that something to do with dot product

[noble harbor]

I think the nearly equal node just sees if a float is within a certain range of another float, but I may be wrong

[dawn gazelle]

Output should = 1 if looking directly at target, -1 if looking directly away, 0 if looking perpendicular

[visual crest]

Thank you I will try it out

[haughty axle]

Question: how can I limit mouse cursor position in the viewport, so it won't go to edge, "give mouse a bouding box"? Just do the simple If check for mouse position and If it goes above set coordinates number fail it? Or there is smarter and simpler solution?

[round spruce]

I have an actor with a physics control component when i get closer to the actor i destroy the component and stop the physics then drag that actor around by attaching it to me when iam done draging when i get out of the specifed area i create a new physics control compnent and intlize it with the new location and rotaion but it immediatly snaps back to the original place where i draged the actor ( the compnent is destroyed before i begin dragging) any idea why this behaviour happen ?

[visual crest]

Thank you! That worked perfectly!

[tepid willow]

Hello, I have an array of structs converted a struct that to a JSON string. Does anyone know how I could get that exact struct out of that struct?

[visual crest]

break node or right click on the pin and select break

[tepid willow]

I'm asking how to convert a string to a struct using JSON

[visual crest]

I am not sure you can do that but you can map> add and break the input and input into it

[haughty iron]

try that

[dawn gazelle]

sorry that should read "break" of your structure, not make,.

[tepid willow]

Brilliant, thank you

[tepid willow]

Oh, actually though, it doesn't seem to serialize 🤔

[languid hemlock]

I guess 5.1 doesnt have that function :/

[haughty iron]

should do ? one second

copy all that and paste it into the blueprint graph

[haughty iron]

try that one ?

[languid hemlock]

I can paste that but its only "Get Assets by Class"

I have it

I cant have Get Class Path Name

[haughty iron]

so you cant do that one either ?

[languid hemlock]

If you have time, can you print "Get Class Path Name" value and tell me so i can understand its logic and use manually

I dont have other engine versions :/

[strong rover]

I'm working on a tool that works in editor, not run-time/pie
Does anyone know how to create an event when either:

1. The user's selection was changed
2. A particular item was selected

I can check if an item was selected. But I need a way to create an event when this happens.

[haughty iron]

? that, if it helps i am working inside an editor utility widget ?

[languid hemlock]

I meant print the return of "Get Class Path Name" function via "Print String" 🙂