blueprint

[edgy ingot]

Async load class for loading class

Async load for objects

[lyric oak]

Can anyone tell me why this is happening? well, basically I'm doing a line of sight effect, it's this blueprint that creates a series of linetracer according to the tracecount, it works well, but there is a delay, when I move my blueprint, there are delays when updating the transform, but the linetraces are working well, even when I move the point, what could it be?

[red berry]

Is there a way to find the exact node usages of a struct or enum inside blueprints? I know you can use the Reference Viewer to find out which blueprints use those structs/enums. But I need the exact location INSIDE those blueprints. If I have a blueprint that refers to EnumA, and I have 100 functions, I want to know WHICH function refers to the enum/struct. Is this possible?

[trim matrix]

woah doing that with meshes like that seems kinda nuts . Maybe the instanced mesh comp isn't updating fast enough?

Try setting the mark render state dirty to true

@lyric oak

To not make it set the pc on fire, do that only on the last index

[forest agate]

If anyone can help me out, I for some reason cannot get the contact point of the grapplehook to attach to a moving object. I have tried a lot of things and it's got me stumped. Any help would be appreciated thanks 🙂 https://blueprintue.com/blueprint/yhie0z95/

Please DM me if you think of something I will be at work

[lyric oak]

I've already done this, turning it on and off and seeing if I could reduce the delay, but it doesn't change anything

[lyric oak]

you can make it more optimized just by lowering the tracercount

[trim matrix]

I was talking about not making the state dirty each time an instance is updated

[trim matrix]

Attach the hook end actor you spawn to the object that gets hit

with the attach actor to component node

[forest agate]

so the object that gets hit is an Actor no?

so I cant use that or am I being dumb?

[lyric oak]

ah, got it

[forest agate]

I'll try that real quick though

thanks

so im using the hit detection from the trace

which is an actor

and the grappling actor is an actor

so I cant do that

I appreciate the help though 🙂

[lyric oak]

So, do you think it's better to change the transformation when I add a new instance? in addinstance there's a Transform parameter...

[trim matrix]

use the hit component

[forest agate]

same issue unfortunately

[trim matrix]

Show updated code pls

you can just ss it

the changed part

[forest agate]

sure one moment

for relevance

[trim matrix]

that won't do a thing

you're never setting it

[forest agate]

what you mean?

[trim matrix]

see the arrow pin on the set node?

it only will get set once the execution flow runs through it

[forest agate]

ya I promoted them to variables

oh OH

I NEED A TICK?

[trim matrix]

Wha

[forest agate]

is that what I need?

to tick those to set them?

same issue

[carmine palm]

For storing possible loot objects off an object, should I store them as an object array?

[forest agate]

same issue

[thin panther]

id use a soft object array but other than that, yeah it wouldn't hurt

[carmine palm]

That way when interacted it randomly chooses a number between 1-10 for item count + random items up to item count

[thin panther]

it depends how you have the system set up as to what type you make it

[forest agate]

Thank you for the help though @trim matrix unfortunately same issue. I will keep trying after work

[carmine palm]

Okay. And then is storing on an object fine? IE for weapons have a structure for them that has type, damage, enchant slots, condition, etc.

[thin panther]

yeah it can be. again it's all system dependent. you can use actors, data assets, data table rows, what ever really.
use soft refs for things like this tho

[carmine palm]

And if I add a save game (have to figure that out) do those objects retain those structures values? (Ie are they persistent)

Okay soft refs yea

[thin panther]

you'll have to come up with a way to save them.
the save game object only saves what you tell it to, and it won't save just an object reference like that.

if your weapons are made at editor time then they will be persistent

[trim matrix]

No...

[carmine palm]

Ah okay a database then

[thin panther]

but any values you change at runtime will be need to be saved and handled

[carmine palm]

For player inventory

[thin panther]

a data base also isn't strictly necessary

[carmine palm]

Oh rip

[thin panther]

you absolutely can go the data base route, but you can also just go the save game object route

[trim matrix]

set it in the same place you are setting the impact point @forest agate

[carmine palm]

Ty buddy

In class but going to game design lab after to fuck around on my portfolio game more lol

[thin panther]

but yeah, you wont be able to just save an object ref to save everything in it. you'd save possibly the item data, and then respawn it on play.
c++ gives you finer control over saving and restoring everything

[carmine palm]

Yea im just learning bp for class whenever i get to it

[thin panther]

(there are also plugins that just save the world state for you if thats an option)

[carmine palm]

C++ I've done (not in unreal)

Oh nice

[thin panther]

if you've done any significant amount of C++ then the unreal api should be trivial once you've avoided the non standard noob traps

[carmine palm]

Should be?

[thin panther]

i would only personally go this route if you plan to do unreal in your own time as well though. if it's just for a quick school project, you probably don't need to

[carmine palm]

Yea I just haven't taken time to look at api yet 😛

We are going next semester to Tokyo to meet with Square Enix for class so want to have a small project to showcase

[thin panther]

i can't speak for everyone, and a lot of people severely overestimate their skill with the language, as well as their ability to read the source, and find info.

[thin panther]

nice!

[carmine palm]

I mean if you look at my profile the non unreal game I volunteer on is over 500k lines of code (c++) 😅

[versed sun]

I miss SWG

[carmine palm]

It's pretty good still

[elder crown]

Hey guys, Im super new to unreal ive done a gamedev course or 2 haha. Im making a topdown shooter game and im trying to get the character to flow better. if you see games like endless dungeon the new one or suit for hire, the characters top half kinda leads the directional turn and the legs follow, I thought maybe it was aim offset but i can only see tutorials for up and down aim offset and im starting to go crazy because i have no clue how to do this. any help would be aprreciated.

[hollow pond]

Blend Space is what you want, iirc https://docs.unrealengine.com/5.3/en-US/blend-spaces-in-unreal-engine/ (5.3 version, there are other versions of this page)

[echo storm]

can i not set vector parameter values for my text component?

[carmine palm]

Can you modify mesh/skt/animations all in unreal?

My model I have from someone has an animation set but it doesn't work with all my other ones I own. (They all work with mannequin, etc)

[elder crown]

So i got a blendspace and i can move around added animations but its like i want to split the animations or something

[hollow pond]

https://docs.unrealengine.com/5.3/Images/animating-characters-and-objects/SkeletalMeshAnimation/AssetsFeatures/Blendspaces/Overview.gif

might just need to look into your blend space more. afaik it is also possible to split animations so you can, for example, use 1 set of bone animations for the legs and another set for the torso

which kinda seems to be what you're doing already? I don't have a very good eye for this though

and I haven't used blend spaces myself, I just know of them from a friend that has made good use of them

[elder crown]

No im not doing this yet, its just a simple blendspace that im using

but if you see when im running around my head and legs are always pointed the same way which is not what i want

Ill keep checking around

Pretty sure its aimoffset

[hollow pond]

aim offset is a type of blend space

[elder crown]

Yeah

[hollow pond]

but if you look into blend spaces more generally, you'll find more advice and you'll be able to do what you want

[carmine palm]

Just had to use blend space for post process material lol

[elder crown]

My goal is to understand animation and blendspaces but im like uber new lol

[versed sun]

there is an #animation channel , might help more

[zealous moth]

is there a way to show gizmo for maps of int:vector?

[versed sun]

I don't think so
try having a separate Vec with 3d Widget just to visualize it , the copy/paste the value to your Map once it is where you want it
Can also Draw Debug Point/Box/Sphere on a For Each Loop, If you want to see all the points

[zealous moth]

already doing that but i want the user to be able to drag around the widget to set the location

[versed sun]

During Gameplay? or in editor?

[sly forge]

Is there a built in tool to copy a bunch variables from one bp to another at once?

[zealous moth]

in editor

[thin panther]

property matrix might help

[versed sun]

have you looked into Editor Utility Widgets?>
You could make a widget that would let you build your Map variable

[versed sun]

Copy/Paste works nice for me, just have to Create Variable on the Pasted side
Right click on the "non-word" part to see dropdown

it doesn't transfer the default values though

[sly forge]

Thanks, I think I'll go with that

[lyric oak]

well, I think Instancer Static Mesh must be the problem, it must have delays, does anyone know an alternative? And if so, how can I apply it?

[trim matrix]

It must be the problem

[versed sun]

hard to read your pics, try this https://blueprintue.com/

[trim matrix]

have you considered doing the same effect with a material?

[carmine palm]

Does anyone know if the editor has a quick key while in bp editor to straight connections (when you are moused over a node)

[versed sun]

there is a list of keys in the Alignment tab dropdown

[lyric oak]

Well, I have no idea of an alternative to InstanceStaticMesh, I tried Procedural Mesh, but I think it's a bit advanced for someone like me, who joined Unreal a few weeks ago, do you have any idea of generating a mesh according to linetrace?

[versed sun]

are you remove all instances , and re-adding them every tick?

[trim matrix]

yep

so you could try adding them once and updating them on tick i guess?

[lyric oak]

almost that

[versed sun]

Add Instance Transforms (Array) is about 20% faster than Add Instance transform (Single), not sure if that helps

[carmine palm]

q perfect. ty

Anyone know if there is a plugin that will let me zoom in further to bp editor lol

[lyric oak]

I'll try to use it, thanks

[versed sun]

hold Ctrl while zooming

[carmine palm]

Sick

gracias

[versed sun]

4k monitor?

[carmine palm]

getting a little more anal about looks

[trim matrix]

use blueprintUE you ppl

[hollow pond]

I think this is just them showing that they're making their code neat

[spark robin]

Can I reparent a Blueprint macro library to "Object"?

It doesnt show up in the Class Setings > Parent Class dropdown

[stray halo]

simple question

How do i get the x,y values on the right side of the subtract also on the Project world to screen?

[dire frost]

Maybe your are using some from Actor in your macro? If all things fail just make a new object macro and copy paste your code over

[dire frost]

You can break any struct (blue pins) by either right clicking and selecting "break" or draggin from that pin and search "break"

[carmine palm]

What is that

[hollow pond]

pastebin but for unreal blueprints

[carmine palm]

Oh nice

Yea just showing off clean layout

[wild crystal]

hello I have a few questions on speed and velocity.

1. How do i find the velocity of an imported fbx animation (for e.g a plane flying)
   2.How do i find the velocity of an object animated in the sequencer (i.e not possessed by the player)
2. Is there a node that finds the instantaneous velocity (derivative )

Thank you so much.

[faint pasture]

At design time or run time?

The easiest approach would be to just store position every frame and calculate velocity as (Position - OldPosition) / TimeStep

[wild crystal]

design time since I am mostly interested in linear animated content

[faint pasture]

Probably not, you'd probably have to write some utility that basically does the key frame interpolation and calculates the derivative for you.

If you have access to the slope or tangent of the curve then it'd be simple

Otherwise you'd just have to sample it multiple times and math it out

[wild crystal]

thanks for the suggestions. most of the suggestions on the net have an answer to this only after possessing the object

[carmine palm]

What colour would be good for loot highlight

Need one that stands out

And line thickness might be too excessive lol

[hollow pond]

could always expose those as options to the user! I'd be inclined to go for white or a pale yellow as default - the fact that the loot has a big outline around makes it stand out pretty well, regardless of the colour of that outline

[carmine palm]

Valid point. Didnt think of making it a setting lol

Right now it's just exposed on BP object

[wild crystal]

what would i add to this to get started. (i'll find out how to do this in the sequencer and write back here).
The current setup gives me zero.

[faint pasture]

Are you intending that to be frame rate dependent? It is.

[wild crystal]

at 24 fps

[faint pasture]

Vec pos offset x 24 is your velocity

That's pretty gross though. You should write your code such that velocity is an actual variable, then divide by timestep for your offsets

[kind estuary]

how do i see the call stack

or how do i see what created this widget

[dusk wing]

hello am new here but really need some extreme help I am stuck on fixing a pressure plate puzzle and the plates for it and I have very few hrs to get it done but do not know what I am doing

[lunar sleet]

What is the actual problem you are having

[dusk wing]

I can screen shot it and show it itd be easier

[versed sun]

i think the last one here takes you close to where you want

I don't really use debugging, because I don't make mistakes

[lunar sleet]

The last arrow? I think that just takes you out of that function

[lunar sleet]

Lol

[versed sun]

it took me to the node right after the Add to Viewport

[dusk wing]

is there a way I can DM them to you as theres several pics of my issue

[lunar sleet]

Just post them in here

Use win+shift+s so it’s legible

[dire frost]

blueprint debugger window should have the call stack

[potent coral]

Hi, I'm having a difficulty when switching from my MainMenu level to the actual game. For some reason, my virtual Joystick isn't working when I open the level via "Play" button while other buttons are working just fine. Joystick is also working as expected when I open the level directly from the Editor. Anyone has any ideas on what it might be?

[dawn gazelle]

This is cursed. You somehow have a bool input connected to an int input. This means you have a int value going into both of these but there's no actual int defined.

This is the equivalent

[lunar sleet]

Oof

Circular logic?

[dire frost]

more like UB

[dawn gazelle]

This is what you want based on the comment.

Here I think all you want to do is add the cast's As BP Pressure Plate back to the PressurePlates array.

And this also makes the resize earlier a bit pointless as you're constructing the array again anyway.

[dawn gazelle]

This will just result in an infinite loop as your loop appears to be calling this function.

Based on what I'm seeing, what you want to do here is drag off from the Array Element and call "Reset Pressure Plate" which then should play the timeline you have in reverse for each of the pressure plates in your puzzle. Get rid of the "Reset All Pressure Plates" call here.

[dusk wing]

all that makes sense thank you all I am going to try to input it all and see what happens.

now this is my real issue it makes no sense when the bp is the parent actor

[kind estuary]

i went on window -> debug

doesnt show call stack

only breakpoints

[dawn gazelle]

Maybe work it the other way around. Create an event dispatcher that has an integer input in your BP_PressurePlate that you can call when you want it to send out the message that it was triggered (you'd connect this event dispatcher in that empty space you have right now). In your "Populate Pressure Plates" function back in your BP_PlatePuzzle, when you're looping to populate the array with your plates, you can also bind to that event dispatcher and have it call Event Plate Pressed.

You'd need to hook in the Plate Number of the plate into the dispatcher too of course.

[dire frost]

lmao unreal removed it in version 5. guess it was too good to keep

i dont think there another way to pull the bp callstack

[dusk wing]

all the events and things are presetup by the teacher. I would switch the BP parent class to plate puzzle but that only messes everything up

[lunar sleet]

Weird I seem to remember seeing the call stack at some point in 5+

[dawn gazelle]

Ok, if you just want to do what the comment says that should suffice... Get the Parent Actor, cast it to BP_PlatePuzzle, drag from the cast node and call the Populate Pressure Plates event, and feed in the Pressure Plate Number.

[lunar sleet]

School making them use CAC ?

[grizzled roost]

https://forums.unrealengine.com/t/was-actor-recently-rendered-and-frustum-culling/1395325

I'll just drop this here while I wait for an answer, I appreciate any help I can get.

[cyan bone]

do you have screens or something that shows the problem

could be the bounds

[grizzled roost]

Bounds?

[cyan bone]

show us the actor and show us the problem happening

go on the mesh

and type bounds

if the bounds go over the wall

then it will assume its being rendered

have you tested it more far away from the wall

put a wall and the actor after wall far away

[grizzled roost]

I'm not sure what you mean by bounds go over the wall.
It's just for testing but it's a big wall a pretty big wall.

[pallid nest]

hey guys, what I am missing here ? I've set up a timer that basically runs to 0 and you die unless you are on a checkpoint, it works fine but what I am trying to do is that when you are overlapping a checkpoint (static mesh with a trigger box) the timer will be frozen. I thought to do a loop but for some reason is not working?

[dire frost]

i loop will freeze your execution. everything in bp needs to execute one node at a time. if you have a loop the execution will be "stuck" inside that loop

[cyan bone]

the problem is on that if statement

[dire frost]

a better alternative is to use "tick" instead

[cyan bone]

make a breakpoint in it using f9 and check the variable values

[grizzled roost]

You mean the branch right?

[cyan bone]

yes, also use the player seen variable get

dont take it from the set

put one there separately

[pallid nest]

that is what i dont understand for some reason it goes like if i wasn't into a checkpoint but the actor is actually overlapping the box

and the other BP is set wit the checkpoint after overlapping

[grizzled roost]

Putting a breakpoint there doesn't let me do anything because the condition was called immediately, so I can't even move the player to test anything.

[fleet comet]

Hi, just wanted to get some help (please bear with me, if it sounds like i'm asking silly questions it's because i've only been learning the software for a month or so for my Uni work). I have a mesh that basically will damage the pawn on collision, but it only damages once on collision and won't continue to damage over time until the collision event happens again. Does anyone know how I can loop the damage so it will keep damaging the player while they are in the collision radius?

[grizzled roost]

What do I connect it to?

[cyan bone]

check the variables in boolean

one is true when it should be false

[versed sun]

something like this

[cyan bone]

you are connecting a set variable to the branch

disconnect it

and put there the variable Player Seen separately

[flat coral]

Why is the physical material param of this hit empty every time? I know I've got phys mats on these objects.

[fleet comet]

ty, what is the set node i can't find it

nvm i am stupid lol

[grizzled roost]

I'm sorry but I'm very confused.
I'm new to Unreal, how are you able to tell which variables are true or false? Are you talking about runtime or something I set in the blueprint itself?
Also I told you the part about the NPC detecting the player is working fine, I'm sure my code isn't perfect but the part I have a problem with is the player detecting the NPC, not vice versa.
The player seen part is intentional.
How do I fix the part about the NPC continuing to render even though it's behind a wall?

[cyan bone]

this is because your booleans are wrong

and i could tell that you connect a set output boolean to the if statement

which sometimes can cause issues

but other than this

you must debug it

normally you connect the output of the set variable if the execution is connected

else is best to just place the variable again

but this might not be the issue

learn how to debug

[lunar sleet]

Pawn sensing was replaced by #gameplay-ai perception

You should use the latter @grizzled roost

[carmine palm]

Is there a way to mass create blueprints that adds an inherited thing to them (from clicking on meshes and create bp from selection)

[grizzled roost]

I just wanted to set it to true and past along, there, not that it will fix my problem.

[pallid nest]

could this be that in the overlapping I need to add the playe somehow? I've done with a tick and still it is not recognising the player on checkpoint so it has to be an issue with the overlapping

[grizzled roost]

I know how to debug text based code, this is all very new to me.

[carmine palm]

Doing this one by one sucks lol

[cyan bone]

try print string node, print both the Player Seen and the Was Actor Recently Rendered on tick. You will be able to see which one is causing the problem

[grizzled roost]

Again, that part of the code works as intended, what I'm struggling with is the NPC rendering.

[lunar sleet]

You want to cull it or what

[grizzled roost]

I want to cull it when it's behind a wall, which should be happening automatically.

[lunar sleet]

Based on what, are you using world partition? Or are you talking about it being culled when the camera is not looking at it

[lunar sleet]

Make them actors to begin with? 🙂

You could prly use some form of blutility but not sure it worth the effort

[carmine palm]

I have to do that now. I just have static meshes lol

[grizzled roost]

I'm talking about Frustum culling, which to my knowledge is a default feature of Unreal Engine.

[lunar sleet]

I don’t recognize the name but afaik normal culling in engine occurs when the camera is not looking at something

[grizzled roost]

Yes, that's already working.

But also

Unreal is supposed to cull stuff that's obstructed from the camera by other stuff.

[lunar sleet]

Maybe. I haven’t heard of that though, and it would be annoying to have to force each thing to render because you have an obstacle in between

Not sure where you could find an answer to this, maybe #ue5-general or #level-design

Nothing to do with blueprint afaik

[grizzled roost]

The NPC IS being rendered despite being behind the wall, what to do?

[cyan bone]

show me the code

[grizzled roost]

I know it's a mess, it's my first blueprint so don't be too mad lol.

@cyan bone

It's just a quick test anyway.

[carmine palm]

View Frustum

https://docs.unrealengine.com/4.27/en-US/RenderingAndGraphics/VisibilityCulling/

look there

[grizzled roost]

First thing I did, doesn't help.

That's where I got the term anyway.

[carmine palm]

Whats your true return

Checking if object is rendered?

[grizzled roost]

Yes.

The one that's behind the wall.

[lunar sleet]

What does checking if it’s been rendered recently do tho?

Also those docs basically say exactly what I said

If not within camera angle (distance, etc.) -> cull

There’s also the question of why you’re doing this

Premature optimization is a bad idea

And if it’s just a test, I’d say you have the result at this point

[grizzled roost]

I'm not optimizing, the game will be a small one anyway, rendering is related to a game mechanic, the NPC only moves when not rendered, like I said in the thread.
So I want to move when not in view of the camera, OR when hidden by an object.

[lunar sleet]

Maybe I didn’t read up far enough

Basically, putting a wall mesh in between the two will not get it culled.

It would need to be at a certain distance or outside the current facing angle of the camera

What you can do if you want is use perception or line traces to determine when it should move

Those you can customize to your heart’s content (some conditions apply 😅)

[grizzled roost]

It's the third line of the post.

But yeah line traces are a great idea.

I used them in Unity but only once, so i forgot about them.

[lunar sleet]

I tend to skim when it’s a bunch of back and forth, mb

[grizzled roost]

Fair.

So I create a bunch of line traces to cover the entire fov of the camera?
Like this, but many, enough to cover everything I see.

Would that impact performance in anyway?

[elder lodge]

u r making raytracing lol

[lunar sleet]

You could do multi line trace or shape traces even (tho there are no real cone traces out there) or maybe perception with EQS if you want

Depends on how precise you need to be

[trim matrix]

look at this madness https://forums.unrealengine.com/t/cone-trace-with-proper-distance-steps-and-start-end-radius-size-controls/88194

[elder lodge]

my uneducated guess is that simply obscurign something isn't enough to cull it; how do we know that it doesn't have light interactions or bounces?

[grizzled roost]

I was gonna ask if that's a thing because I only worked with lines in unity, is there a triangle trace? I can stack a bunch of those on top if each other if that's the case.

[lunar sleet]

Yeah they usually make it with 2 spheres or complex maths

[elder lodge]

the engine won't know this, I imagine there may be some way but I think you have to make sure it in no way impacts the rendering of the rest of the scene

[lunar sleet]

I don’t think so, you have boxes, spheres and capsules afaik

[trim matrix]

an alternative would be to use a invisible cone mesh

[west yoke]

Do some math to see if the actor is in the camera frustrum and if it is trace whatever shape you want between the camera and the actor to see if it hits anything

[elder lodge]

do it in reverse
Line trace from the top/bottom/left/right of the NPC to the player

[lunar sleet]

A nice blend^

[grizzled roost]

In what direction? The player could be anywhere.

[elder lodge]

excepting half-walls, holes, windows, etc, you can do a very simple line trace from the NPC to the player for its "existence"

[lunar sleet]

And no line traces are not generally expensive, thought the draw debug option can be when you have a lot (which is irrelevant for production

[elder lodge]

lol set the line trace to end at the player vector

or the camera

[lunar sleet]

on a side note, I'm just gonna leave this in here 🙂

[grizzled roost]

Another stupid question, the camera's fov isn't a cone though, it's more like a pyramid shame...?

[lunar sleet]

That’s a BT built-in node ^

[trim matrix]

oh wow, the BTs have it 😃

[lunar sleet]

Yep

Miezko did a lot for us

[grizzled roost]

Oh

I don't want any 3rd party stuff, this is a learning project.

[west yoke]

Here's a (hopefully) easy question: I'm using this to tilt a mesh based on its velocity. It works great without the RInterpTo node, but when I put that it to try and smooth out some things it just starts spinning like a top.

[elder lodge]

does your game have 3D movement?

[grizzled roost]

"Bunch of traces lines" plan will have to do.

[lunar sleet]

BT = behaviour tree. Not 3rd party, it’s an #gameplay-ai system

[grizzled roost]

Yeah it's first person.

[grizzled roost]

Oh

[elder lodge]

I mean can the NPC appear above/below?

in which case you don't need to worry about the real FOV, just the left/right angles

[grizzled roost]

No, I want everything to happen on a flat plane.

[elder lodge]

In that case you can probably get away with just 2 line traces if you really want

[grizzled roost]

Won't be enough, what if the lines miss the NPCs?

[elder lodge]

NPC to camera

NPC ------> Camera

[grizzled roost]

It's not just the location, the camera has to see the NPC, if this is gonna work the lines have to come from the camera, and there has to be enough of them to cover the entire FOV.

[elder lodge]

Then you have a boolean for both conditions

[west yoke]

If you don't mind a little cpp you can make a node that exposes AACtor::GetLastRenderTime()

[elder lodge]

1 condition: Is there line of sight to the camera from NPC -> Camera?
2nd condition: Is the NPC's position within x degrees of Camera's forward vector.

Since it is on a flat plane, you don't have to consider the "pyramid" of the FOV
Just the left/right angles

[grizzled roost]

I already have half of that implemented, hmm.

I just need a single line trace in that case.

[elder lodge]

sure, you can get away with that
the NPC's edges might poke out tho; which is why i suggeted from their outer bounds

if they're peeking around a corner

[grizzled roost]

That's fine, adds to the horror.

[brazen pulsar]

I'm having a problem with persistent variables in game instances. I'm trying to make it so the game records the date between levels, and changes it if someone interacts with a bed/mattress. I've got the date saved in the instance, but it doesn't increase when I interact with the bed

p.s., sorry if I'm interrupting

[elder lodge]

I think he's got it

[brazen pulsar]

excellent

[grizzled roost]

Just like that new game did it, Lethal Company I think.
Welp, I'll go do that then, I'll check back if I have questions, thank you all for your help!
Esepcially you Zap!

[dusk wing]

and I get the puzzle to work and the door to open...... when I exit the PIE I get this error!!!!!!

[elder lodge]

ngl I had to deal with some similar blueprint corruption issues

did this start happening in an unrelated blueprint sorta thing?

[dusk wing]

I need to fix it but idk how I have 4 hrs til its due and I am sooooo close and I am now crying cuz this is stressful

[dusk wing]

no

[west yoke]

Your index is probably out of range in that array.get call

[random pulsar]

Hey,i made this logic and my rabbit must play the death flipbook after 2 hits,because he has 2 lives but he plays it only after 3 hits,also the projectile has 1 damage

[west yoke]

Put a break point on that branch and make sure the values are what you expect to see

This should probably also be <= 0

[random pulsar]

oh shit yeah

[brazen pulsar]

This is what the bp looks like for the bed, and I got a thing that shows the date on the ui, but it's stuck on default even if I E at the bed.

[random pulsar]

i didnt see that ,thanks

[west yoke]

https://tenor.com/view/vlod-rubber-duck-duck-vlod2-bathtub-gif-3004830228421712541

[brazen pulsar]

this is the UI bp

[dusk wing]

this is the bps with reset plates idk where I went wrong

[brazen pulsar]

that's probably more pressing, can someone @ me later? I can wait

[dusk wing]

thank you all that helped ngl you all saved me a huge migraine worse than I already have. I just fixed everything and completed everything

[versed sun]

hmmm, Can you get a Socket location from a ISM's instance?

[dawn gazelle]

Input events are usually meant to be used in the controller or a pawn that the player is possessing. It won't fire in random blueprints unless you "Enable Input" on them to begin with, but this then opens a can of worms as you're now having to code logic for enabling and disabling input on actors.

[dusk wing]

is there a way anyone can test the obstacle course for me is I sent a zip file for it?

[brazen pulsar]

ah, then I'll make the interact key in the player controller

[trim matrix]

Hi all! does anyone know how i can implement a widget text that will pop up on screen my user hits a object? or possibly know of any good youtube sources for it?

so for example, when my user answers a correct answer, that a door will open, i want to be able to notify them of it 🙂

[dawn gazelle]

Use your HUD class and create a function in it that can create and show the widget.
When something is answered correctly (wherever you may have it in your logic) you can do a Get HUD > Cast to your custom HUD class > Call the function to show the widget.

[trim matrix]

thank you i will give a go now!

[brazen pulsar]

Tried it out, changed interact key to fpbp, and it works perfectly. thx

[fleet comet]

hi, does anyone know how to make an acor respawn when it falls off the map? I have a ball I want to respawn back into it's original position if it falls off the map

[short ivy]

I am calling this toggle music event inside the game mode but the target that it is calling is a different one than the one that gets called. I printed the output of this get a copy node here and also printed inside the actor bp to see which one gets enabled. It's not the same although there are literally no steps in between

how can this logically even be?

The toggle checkpoint event literally has a print string after the event node. So nothing else in between

[dawn gazelle]

If you have two pulls from the get, each will get its own random number.

[short ivy]

what do you mean by two pulls?

[dawn gazelle]

If you have a second line coming out of the "GET", then it's going to call the Random Integer In Range twice.

[short ivy]

This toggle checkpoint only gets called once. I also thought maybe its being called twice and thus it shows different results but no it's only going through once

[short ivy]

I don't get it

the get output value should always be the same?

there is no second line, it's only connected to the target of the toggle checkpoint node as you can see there

[dawn gazelle]

No it won't because it's a pure node, it's evaluated each time you pull a value from it.
So if let's say you're printing the "Get" before plugging it into the "Toggle Checkpoint" then the print will pull a value once and get its own random value pulled giving you one result, and the "Toggle Checkpoint" will get its own random value pulled giving you a potentially different result.

Unless you're printing within the Toggle Checkpoint call... Then it should be the right one 😛

Eg. If you do this, then the function and print are each pulling their own copy from the array which each will get their own random value.

[short ivy]

ooooo

let me try that

[dawn gazelle]

The fix:

[short ivy]

this is only for the print to work, right?

[dawn gazelle]

Yes.

At least then you'd know what is coming out from the random choice.

[short ivy]

but how I have it it actually is working?

[dawn gazelle]

Probably 🙂

[short ivy]

ya tried it out

it's right! Thanks fam, didn't know this until now ❤️

[crystal crown]

How can i do this without referencing the exact character? Otherwise i can't open the doors if the logic is not in the characterbp (second pic). Or how can i get rid of the cast.

[trim matrix]

HUD class is a already created blueprint class or is it HUD widget i will need to create?

ophhh this oen??

[dawn gazelle]

Yea

Sublcass that, and you'd update your game mode to use the one you create.

[fleet comet]

?

[trim matrix]

hmm

[lofty rapids]

check on tick the z ?

[edgy ingot]

Whats the concern with casting?

[lofty rapids]

if the z goes below a certain number your probably falling off the map

[mental trellis]

There's a kill z in world settings that does tjhe killing part.

[crystal crown]

why do i have to answer this every time? i want to keep my classes separate

[edgy ingot]

Lol ok, gl

[mental trellis]

The answer is interfaces.

[crystal crown]

i'm using it but it won't work if the logic is not on the characterbp

cuz the character ref is the exact characterbp

[modest monolith]

I wanna do like that if the line trace hits the hitbox of the decal, the decal will rotate.. how??

My line trace doesn't hit the decal in the first place that's why I gave it a hitbox

but now Idk how to

[mental trellis]

Interfaces don't add logic, they add an interface. You still need to put the logic on the applicable object. There's no getting around that. If you want a bit more separation, use a component?

[modest monolith]

Why my line trace doesn't hit my decal and make it trigger the custom event?

[mental trellis]

If you're using interfaces and still referencing your character's actual bp, you're doing it wrong.

[modest monolith]

How do I put collision on a decal to make it hittable by a line trace

[versed sun]

is your decal on a flat-ish surface?

[hollow pond]

it seems that you can't, you need a separate mesh / triggerbox that detects the collision https://forums.unrealengine.com/t/possible-to-detect-collision-with-decals/323368/4

[modest monolith]

Yes on the wall

[modest monolith]

Yeah, I've put a triggerbox and separate mash. But how to I make the line trace notice that it hit the triggerbox?

[modest monolith]

.

[elder lodge]

would it generate a hit event on the triggerbox?

i'm actually not sure if line traces trigger like that.

[modest monolith]

Well I guess so. Otherwise "Break Hit Results" wouldn't exist

[frosty heron]

Check your collision settings

Make sure it block w.e channel you are tracing. Eg vissibility

[versed sun]

and if Self made the decal, don't Ignore Self on linetrace

if you are rotating it , i assume you made it

[modest monolith]

Overlap

[frosty heron]

Make it block

[modest monolith]

but then every decal would have an invisible box blocking you... anyway it doesn't work

[frosty heron]

Overlap not gonna stop your trace

[modest monolith]

block or overlap the thing won't work

[frosty heron]

Break your hit result, print string the hit components

Also just share your code

It's easier for others to spot the error

[modest monolith]

It's above

[frosty heron]

Print string on empty space

Then connect your hit comp to it

It will auto get the display name node

[crystal crown]

i'm not. i just didn't know how to get rid of the cast. i just found out i can use an interface event to call another interface event. i wish you would have said this

[mental trellis]

An interface event to call another interface event?

[frosty heron]

Easy way to not get help in the future

[frosty heron]

Don't understand why people have to vent their frustration when they can't figure things out

[mental trellis]

The sun is a lie?

[modest monolith]

https://tenor.com/view/i-can-see-it-nolan-sykes-donut-media-i-can-recognize-i-can-visualize-gif-21597748

[frosty heron]

Open console and type show collision

[crystal crown]

i was calling a regular event instead

[modest monolith]

the bed had fucked up collisions oooooh my godnesss

looool

[frosty heron]

Always print string to debug when it comes to collision

[mental trellis]

You could just call the regular event...

[frosty heron]

If it's widget u can use widget reflector

[mental trellis]

I mean, that's fine, but still.

[modest monolith]

Lemme see if I can fix it

[crystal crown]

no then i need to cast to the receiver to set the target

[thin panther]

vehicles can all share a base class, you don't need an interface

[crystal crown]

??

[mental trellis]

Surely the receiver is just 'self' ?

[crystal crown]

no because this is in characterbp

[modest monolith]

It doesn't read the static mesh anyway

[frosty heron]

Open console in pie and type show collision

[mental trellis]

Why do you have a single interface both for the character and vehicle?

That's what confused me.

[crystal crown]

i'm so confused. isn't that how it's supposed to work? one interface talks to both classes

[modest monolith]

Which pie? You made me hungry now

[small wedge]

I know this screenshot is technically from MetaSound but I've got a question regarding comment bubbles.

Is this a clear way of writing out comments? Is there a nicer way to put what I'm trying to say?

[frosty heron]

It seems to be blocking. For sanity check, make one afloat in space not behind wall.

Pie is play in editor

Trace to the plane only and see what you get

[modest monolith]

Purple is the decal

[mental trellis]

No. An interface defines the set of functions an unknown class has. You should implement every function on each class that implements an interface. In your case, I might have BPI_Vehicle which has the methods implemented on vehicles and BPI_VehicleDriver or BPI_VehiclePassenger or BPI_VehicleUser which has methods implemented on things able to use vehicles.

If you have something which can both be a vehicle and use a vehicle, you implement both interfaces.

You don't have a single interface where one half of the objects implement half the interface and another set of classes that implement the other half.

[modest monolith]

Okay. I found the problem. Basically all the collisions of the meshes of this pack are fucked up and are covering my decal.. it wasn't the decal the problem

my code was okay

lol

[crystal crown]

but in the end everything will still work the same without fragmenting things to a million pieces will they not?

[mental trellis]

Sure it will work, but you're not using them correctly.

You can bash a nail in with the handle of a hammer if you really want to.

It'll work, eventually.

[modest monolith]

Thank you sir ❤️

[mental trellis]

You try any sort of validation on your interfaces, e.g. "Does it implement all the methods?", then it will fail currently because yours aren't designed for that. And that's where bugs occur.

[crystal crown]

idk the "proper" ways but atleast i'm trying and so far is working 😄

there are not good enough guides out there to show the proper ways. everyone just shows the most basic stuff

[mental trellis]

idk the "proper" ways
You do now.

[elder lodge]

Is there a way to have the variables for an actor-component be set from the editor window to another one of the components?

My component AffectedByGravity is what the GravityManageruses to propagate all the effects; I'm wondering how each instance will find the mesh/primitive/character to apply the forces to

[crystal crown]

So i only implement one interface for each class? BPIVehicleUser for the character and BPIVehicle for the Vehicle?

[mental trellis]

Something like that yes.

If you make other systems, you might add more interfaces.

But specifically for this, it would be 1 interface per class.

[crystal crown]

thank you. small progress is still progress

[mental trellis]

I suggest you copy the one you have, update either your vehicle or character to use the other interface, then delete the methods from each which are wrong.

[crystal crown]

Hmm but here i can't call the event on character if it's not implemented. what do i do in this situation?

[mental trellis]

Why would you need to call a vehicle event on a person ?

If the character needs to have the event, it goes on teh vehicle user interface.

If a vehicle has the event, it goes on the vehicle one.

[crystal crown]

ugh my brain. i need to get reference of the vehicle so i put it on the user because he needs it is what you are saying?

ye nvm i guess it makes sense

Now how would i fix this ugly cast? This cast is the child class of where the logic is

[mental trellis]

...use an interface?

The answer to everything!

[crystal crown]

It's easy to say but i haven't fully grasped interfaces yet! Not sure how to use them in every situation

Please be more specific. How!

[frosty heron]

How demanding 🤣

Interface is simple and straightforward

If something implement this interface, run existing function in the interface

[crystal crown]

I'm not a native speaker which is not making learning any easier

[frosty heron]

Interface is not your answer to everything, you need to decide sometime to use component or base class.
Putting interface all over the places is ugly and can be hard to debug imo

U use interface when you want something to run on classes that don't share the same base class

For interaction, it's normally either component or interface

[crystal crown]

i'm using components but interfaces for characters x vehicles

[frosty heron]

Easy example is like a door and a light. Both can be interacted, both implement the interaction interface

In your character bp you don't need to get direct ref of the door or light

U simply , for example line trace. Get the actor. It can be either the light or the door.

If the actor have interaction interface then run interacted via interface

Thus communication can be done without the need to get direct ref to the light or the door

[crystal crown]

Indeed that's what i have done so far. But it's alot more confusing to me with character x vehicle because of the complexity

[frosty heron]

Multiplayer is the real complexity

For me at least

[crystal crown]

Do i implement the vehicle interface on the animbp and send the variable though an event? does each variable have to be a separate event?

[dawn gazelle]

Should be the opposite... AnimBP should be reading values from its owner, you shouldn't have to feed values into the AnimBP.

[frosty heron]

Your anim bp shouldn't need to call any logic

Anim notify begin -> get owner -> cast to w.e it is. Run some function

[crystal crown]

i mean these are on the animbp but the logic is on the vehicle

but i need to feed the value into the animbp. i'm so confused again

lol

[frosty heron]

This is reading

Reading is fine

[dawn gazelle]

The value should be stored on the actor that has the timeline.
Your AnimBP should be reading the value on its Blueprint Update Animation event and setting the value in its own variables.

[crystal crown]

Broo i'm stupid. I did it like that for some other stuff and not this. My badd. Fixed it. Thank you! Idk why i didn't think about that. ughh 😄

this was so simple but felt so complicated

Now my final cast problem is this in the vehiclebp. not sure how to get rid of this

[frosty heron]

Hence my first question, what's the concern with casting?

Your mission seems to be getting rid of all cast nodes

[crystal crown]

yes

[frosty heron]

Why?

[crystal crown]

i want to keep my character and vehicles separate

so they are not loaded all the time

[frosty heron]

Learn cpp so it doesn't get loaded all the time. In cpp land you can freely cast.

Casting to cpp class won't load the class to memory

You can't escape it in bp

You don't use interface for everything, this is not right

What's locomotion anyway?

[crystal crown]

you see me struggling with bp. what am i even going to do with c++ lol!

[crystal crown]

character animbp

[frosty heron]

Well first of all u don't want to make a call to your anim instance

Anim instance just read

Ur bp is what drive the logic

[crystal crown]

okay, i think i might have an idea how to rework this

[ripe timber]

Question: I'm assigning an event in a child class of a gameplay ability to an event dispatcher in the parent class. The event fires when my instancing policy is per-execution, but doesn't work when I set it to per-actor. The dispatcher is being called in the parent class event graph, if that makes a difference. Why does setting the instancing policy to per-actor do this?

[modest tinsel]

How could I make this then one have a 1-3 chance to play?

[frosty heron]

Random int in range and switch

Or random int in range, select node, and a branch

[dawn gazelle]

You typically don't want to handle logic outside of the gameplay ability itself. It's meant to contain logic and call to other things, or send gameplay events which other things can listen to, but you really shouldn't be referencing an ability as an object in some other class which is what you would need to do to bind to an event dispatcher within the ability.

[ripe timber]

So putting some of the logic in the parent class and calling it in a child class is also a no-go?

[crystal crown]

Things that go through an interface are already replicated? My brain is kinda dripping from my ear already

[dawn gazelle]

Oh I think read what you were doing wrong... Within the ability itself should be ok, but you shouldn't necessarily need to do this within a child class. As it is a child class, you can override events and functions of the parent, so where your parent class may be calling that event dispatcher, you can have it just call an event, and then have the child class implement that event how you want it to implement it.

[ripe timber]

I was thinking of having these event dispatchers also work as a trigger for stuff outside of the Ability System like updating the UI, should I be doing that some other way?

[dawn gazelle]

Eg....
I have a parent class "Charge Ability" that has some logic for handling an ability that requires its input held, and then I override what I need to in a child class, like this ForceRepulsion that just needs to handle the execution.

You really shouldn't be using event dispatchers to communicate outside of the ability.

Again, that requires you to have a reference to the active ability and bind to it, which isn't great, and yeah the instancing set up can mess with that.

You can send gameplay events which you can listen to in other classes.

There's delegates that the ASC has for certain things too, like if ability activation failed or was activated successfully.

[ripe timber]

I thought gameplay events could only be received if the Actor has their own ASC on it, so I wasn't considering those. If that isn't the case then I'll try that. As for the built-in delegates that also sounds useful

[crystal crown]

yay i managed to get rid of the cast!

[frosty heron]

Probably best to keep in mind that cast is unavoidable one way or another. The best thing you can do to migitate the drawback of bp cast is to cast to base class

[crystal crown]

it's not completely avoidable but i can avoid direct casts and use indirects instead in components

that way the primary actors will not stay loaded

afaik

[thin panther]

That's not how casting works

It only loads if it doesn't exist. And if you use proper base classes, which you should, the cost is basically nothing

An interface does not solve the issue of the loading either

A hard ref is the cause of it

[crystal crown]

What im doing is the same thing. Removing hard references

[thin panther]

You're still using hard references though. And not all hard refs are bad.

Read: proper base classes

[crystal crown]

What hard refs do i use?

[thin panther]

The one to message your interface? The difference in size between one of those and a proper base class is practically nil.

Put it this way, if you cared about that loss, you wouldn't be using bp to begin with

You appear to have a casting is bad mentality

It isnt

[crystal crown]

I only try to cast to character not thirdpersoncharacter etc

I guess they are called base classes?

[thin panther]

Character is indeed a base class

Point is, don't abuse interfaces. A lot of interface work arounds end up doing the same thing a cast does, and just giving you more implementation cost

[dawn gazelle]

Yea there's something to be said about ensuring classes are decoupled, but in some cases it wouldn't matter. Like a door animation blueprint being decoupled from an actor that houses the door that is using it... why? It has to be loaded with it anyway.

[crystal crown]

I'm not using interface for everything. I only have a few events. I'm just not using a component for the vehicle stuff. Only for character stuff atm

I'm decoupling the character from vehicles. It's a big difference. I'm not trying to decouple vehicle animbp from the vehicle. That makes no sense

[thin panther]

As long as you are aware. You made some concerning blanket statements :P

[crystal crown]

I'm learning new stuff about the proper ways constantly. I'm not saying ik what I'm doing but so far i think I'm doing it right. Not being native also makes it harder to understand

[solid needle]

hi all, does anyone know why this doesnt work

ill make the links smaller one sec

the format text isnt showing with a pin :(

[raw orbit]

if a character has no ai controller it does not respond to either of these nodes, any idea what could be the cause?

[solid needle]

how do you get those unreal lines anywyas

versus curves

[raw orbit]

its electric something, a plugin

this one, its not super expensive especially if you grab it on sale

[solid needle]

https://www.unrealengine.com/marketplace/en-US/product/electronic-nodes?sessionInvalidated=true

this, correct?

[raw orbit]

ya

[solid needle]

thanks :)

[dawn gazelle]

You can click the "Add Pin" on the format text and then you can specify the actual variables you want to use and feed in what inputs you want for them.

In your case, you want an "x" variable.

[solid needle]

thanks :D

[flat raft]

hello! I have this function where I get the Savegameobject from the gamemode using a actor component. Using this method, is the component begin passed in vis Ref or Copy?

is prolly a copy right?

this would be a reference

(outside function)

[frosty heron]

A copy of the ref

So don't matter in this context

U r still pointing at the same reference

[flat raft]

a copy of the REF and not the data itself right ?

[frosty heron]

Not sure what u mean by the data it self

There's no diff from pic 1 and pic 2

U still get the same object

[flat raft]

so my game save can be pretty big.

[frosty heron]

Yeah don't really matter prob

[flat raft]

i dont want to copy the data, i want to just source it (ref)

[frosty heron]

What u get is a copy of the object ref (pointer/address)

U r not making new instance or anything

[flat raft]

ok awesome, that's what i was wondering

Thanks!

now that you explained it, it clicked in my brain that I could have just changed a value inside the function and check if it carries through 😂

slow brain

[frosty heron]

Not sure with the goal 😄, I normally use game instance to store my savegame objects

[flat raft]

i had it on the game inst, but i moved it to the game mode because i think using a component would be much eaier to access

[rough wing]

How do I get asynchronous functions? Is there any way I can use an asynchronous function for a continuous action instead of event tick?

[pallid nest]

If you have a dmgbox attached to hierarchy of a mesh, and you move the mesh with a timeline, will the dmgbox move with it as well or do you need to move it as well ? I do not fully understand it

[dawn gazelle]

If you need to do something every frame, then tick is the way to do it.
You can use timers if it's something that you want to happen after a set amount of time.
Timelines act like tick for a certain amount of time, but if you're doing it all the time anyway then you may as well use tick.

Tick can be enabled and disabled, and you can also change the tick rate. So if it is something you want to continually happen for the lifetime of the actor, then tick is usually the way to handle it.

[dawn gazelle]

Moving a parent in the hierarchy will move the children with it.

[radiant cape]

"By binding one or more events to an Event Dispatcher, you can cause all of those events to fire once the Event Dispatcher is called."
Is it ok to have it the opposite way where you have many calls to one function?

[topaz thorn]

I've got a bunch of buttons on the screen, all of which are mutually exclusive and modify the behaviour of the left-click in the game world. Right now I have an enum I'm storing in my playerstate that represents the left-click state, and my controller switches based on that to actually perform actions. Is there a better way of architecting this? I'm conscious I'm creating an enum that will end up having dozens of possible states

[dawn gazelle]

The purpose of an event dispatcher is to provide a means for many things to listen for the event so they can do their own logic when that event dispatcher is called.
Many things calling to the one function is nothing more than calling the function which would then just do what it has programmed to do based on its inputs anyway.

[radiant cape]

hmm as an example, in the future I might want the players health value not only displaying in a HUD widget, but also above their head in using a widget component
would this be a case for a dispatcher?

[dawn gazelle]

Yes, you'd have the event dispatcher wherever your health value is stored, and call the dispatcher when you change the health value.
Your HUD and your Widget Component would then need to get reference to wherever your health value is stored and bind to the health event dispatcher, and their bind can then have them update whatever they display as needed.

[radiant cape]

tyvm

[radiant cape]

would anyone be able to provide an example of where you would see or use aggregation and composition within a blueprint setting?
some of the examples online seem very foreign to someone who uses blueprints as a hobby

[dawn gazelle]

I may not be 100% about this as I'm not well versed with the lingo, but after doing a small amount of reading this is how I understand it:

Composition would be like adding actor components to an actor to give it functionality. An example in your case would be a component that manages health - you can have the logic for adding and removing health, as well as that event dispatcher we were talking about built into that component, including having it bind to its owner's "Any Damage" event to actually reduce the health when damage is applied to the owning actor. This then allows you to add this component to a variety of actors regardless of their base class, and they will all act similarly to managing their damage as you've defined in the component. Change the component, it changes it for all owners of that component. The component itself is useless and cannot exist on its own, but attached to an actor it can perform its function. Destroying the actor that houses the Actor Component also causes the Actor Component to be destroyed.

Aggregation would be like utilizing the game state for handling scores. Many things can read and write from the game state to manage and view the scores, or otherwise "use" the gamestate in such a fashion, but the gamestate can still exist on its own independently from any other actor. You create an association to the game state in whatever actor is using it, but destroying any actors using it doesn't cause the game state to be destroyed. Perhaps a different example would be like having "lights" and "switch" actors - you can create many associations between these actors, but destroying a switch wouldn't destroy any door or vice versa, so they can all independently exist.

Now if you had a "light" that had "switch" child actors (which are components!), you're now creating an example of composition in which case if you did destroy the light parent, all of its child switches would also be destroyed.

You wouldn't necessarily want to create separate actors for everything, but you would likely want to have logic that is shared among dissimilar classes, in which case a component is usually warranted, especially so if it's something that should be instanced per actor so it has its own state, and if the logic/entity doesn't need to remain if the actor itself is destroyed.

[radiant cape]

If i have an actor that spawns pawns in the world, but isn't the only way that can lead to X pawn existing... would that be an aggregate relationship?
Also the relationship between a pawn and player controller as i understand a P controller doesn't always need a pawn(?) but both need a game mode
Sorry, i will screenshot and mediate while learning 🙂

[dawn gazelle]

I don't think so. Spawning an actor doesn't really create any relationship at all between the thing spawning it and the thing being spawned, but if for example, you added in an event dispatcher in the pawn to signal when it dies back to the spawner and you bind to that dispatcher after having the spawner spawn it, you've now created an aggregate relationship. The spawner could still be destroyed and the pawn could still exist independently of it.

There is actually a composition relationship between player controllers and their controlled pawns because the engine destroys the player controller's controlled pawn when ending the play of the player controller, however, a pawn doesn't necessarily need a controller possessing it.

[radiant cape]

woops, thanks again... it seems kinda simple explained that way

[vocal tide]

Can I get anybodys advice on this error? everything works as intended but it still pops up every time

[dawn gazelle]

Accessed None indicates you're attempting to use a reference variable with no value populated in it. In this case your "CharacterRef" variable. You may have set the type of the variable to be of your Character blueprint, but you need to actually get the instance of the character that has been spawned that you want to reference and set it in that variable.

[vocal tide]

You are right thank you, I stopped using the character ref and just used a get player character instead and everything seems to work alot better with no errors

[oak parrot]

You could also try using isValid on CharacterRef before using reference

[fallow epoch]

Why is my sword spawning below my character?

Socket names are correct. I copy and pasted them

[grizzled cave]

looks painful

[fallow epoch]

Ya and infuriating haha

[grizzled cave]

did you add the socket to your skeleton

[grizzled cave]

try renaming it to "SwordL"

maybe thats the problem

cause everything looks correct

[fallow epoch]

I've spent the last two hours trying to figure that out and if its the problem im going to lose my shit.... LoL

Nope

Still impailing him

[grizzled cave]

https://tenor.com/view/fade-emoji-funny-gif-25240293

[fallow epoch]

Why would it do this.

[grizzled cave]

what the hell

[fallow epoch]

When I drag it into the world its the correct scale. But when I preview mesh in the skeleton its a mile and a half long.

The scaling is set to 1 in blender.

[frosty heron]

Check Ur socket scale

[heavy lion]

Trying to figure out loading a game from one level and transitioning to new level, then setting variables on the character. Location, Rotation etc.
My save and load functonality is held in the game instance. Called to from the front end menu on continue.
Anyone have any pointers?

@fallow epoch Did you have to scale your character down when importing?

[frosty heron]

By loading a game you mean you want to load a level?

[fallow epoch]

I think I figured it out. I had my root bone hidden on my character in blender. I applied all scaling to everything except the hidden bone..... fixing that and seeing if it fixes the problem. I just notices my scaling was not at 1 when I looked at all my bones scaling to see if anything looked off.

[heavy lion]

@frosty heron Sort of. I am on the main menu map, when I click continue, I want it to load another map. I can do that fine. But it doesnt want to load anything else after the level has loaded.
It should also be loading the character variables.

[frosty heron]

Can you elaborate more on character variable. Assuming this is single player and not server travel, every non persistent object is destroyed

If you need to save your character variable or stat's. Set them in game instance before opening a new level. You can then reconstruct the character with the variables from Game instance

[heavy lion]

The only character variables I am concerned with at the minute is its location and control rotation.

Singleplayer yes.

[frosty heron]

. U can store any type of variable and apply them

Have u figured out how to do save and load to begin with?

[heavy lion]

yes in a single level.

[frosty heron]

Just test with saving and loading simple integer if u havent

Singlw or multiple Level is kinda irrelevant . Your savegame object is stored in game instance

U simply load from slot form continue button

Data will be loaded even before u open new map

[heavy lion]

Ok, Currently, for testing, i have save and load mapped to 5 and 9. All it is saving is the character location and control rotation.
In a single level, i can save, move and load and it works as expected.

When I click continue from the main menu. I am in a different map, I want it to load the correct level (There will opnly ever be one map). Then load the players saved location.

But the game mode, player controller, pawn are all changing on the new level.

And Im just not sure how best to tackle it

[frosty heron]

You should save the map you want to open too in your savegame object

Continue should open the last map opened or the map intended to be opened

Saving transform is trivial, is no different than saving any other types of variable. Eg an int.

[heavy lion]

And that is working. But it is getting lost when travelling to new level. As if it happens before the player character is loaded.

No point saving the level to load as it will ALWAYS be the same.

[pulsar pulsar]

Would anyone know why my BUllet count is not reducing ? First print always gives 11 while second print always prints 12. The event gets called once upon firing a weapon. It then gets the weapon in hands, get the bullet count, reduce by 1 and make new

[dawn gazelle]

You'd need your game to know whether it's loading from a save. Basically, you could just set a reference in your game instance with your save game. The game when loading in can check the game instance to see the save data it should be loading if it is valid. If nothing there, do it as if it's starting from scratch.

If valid, have the actors read the data they care about from the save game reference.

So clicking new game, set the save game ref to none... When confirming to continue from a save, set the save game ref and load the desired level.

[frosty heron]

Sounds like it doesn't work at all then. I'm talking about the value in your savegame object. If you have it in game instance it's persistence and Unaffected by any level change

Once u load it, it's there

[heavy lion]

Yes. What I am trying to find out is when and where can I apply that variable to the player character

It works, but not on level transition.

If the first thing the load or continue function does is open a new map, it is applying the variables to a character that doesnt exist yet

[frosty heron]

That's on you to design. Why is the character don't exist yet when you try to apply your values? It would give u accessed none error

[dawn gazelle]

You can override Spawn Default Pawn For in the game mode. Have it read the game instance to get the saved transform of the player if the save game ref is valid. If not, use your start spot transform provided as an input in the function.

[frosty heron]

Open new map, spawn player , apply your saved variable

[dawn gazelle]

Your "Get Inventory" function is likely returning a copy of your inventory array rather than a reference to the inventory array.

[fallow epoch]

So for some reason when I export from blender as an FBX it adds a bone above my root bone with a scale of 100

[frosty heron]

Common problem, seen a lot of ppl with the issue

I don't use blender tho so no idea how to fix it

[fallow epoch]

I had to change the scaling units in blender

it was 1

[frosty heron]

Unreal unit is cm

Instead changing the unit scale, change from metre to cm

@fallow epoch

[heavy lion]

This is literally what I am asking how to do

[frosty heron]

Which part are u struggling with? I would assume you would know how to spawn your player. Are you using game mode?

[heavy lion]

Yeah. I have two game modes, one for the front end, and one for in game.

[frosty heron]

I mean only the game mode in the map you open will be relevant

Datura already told you how to do it.

Basically once you override and can get ref to your char . That's when you can load your saved variable

#blueprint message

[heavy lion]

@fallow epoch This was gonna be my next suggestion.

This is my load function currently. Within the game instance.

This works when I am in the level and save and load. It just moves the player to its saved location

[frosty heron]

That's not gonna work. You only want to create new save game object when one doesn't already exist

Right now u r just creating new savegame object everytime you call load player

You should have a function in your GI called load savegame and promote it as variable.

Your load player will simply be . Get game instance, get the promoted variable -> get hp/transform/w.e

[heavy lion]

The save game object as a variable?

[frosty heron]

You should set reference to it once you load it yes. You load once, that's it

[fallow epoch]

I havent fixed it yet but I know for a fact its the FBX scaling from blender to ue5 that is causing the issue.

[frosty heron]

Your metric is wrong

Unreal use cm not meter

Change it to cm so it's 1 to 1

[fallow epoch]

I did

[heavy lion]

@fallow epoch This is well documented yes. You need to properly set the scale in blender. Especially when working with skeletal meshes.
Also, wrong channel.

[fallow epoch]

It started as a blueprint problem because my mesh was not attaching properly.

[heavy lion]

@frosty heron So, The reason I added the create new save game object in the load function was because it wouldnt have a reference to it otherwise.
I am now creating it on init from the game instance. So that would mean it is only ever created once?

Save function

[frosty heron]

Created if none exist and loaded at main menu

Does save game exist? No? Create new one

Yes? Load it and set ref so u can use that for your character or other bps

[frosty heron]

Your load player don't need to load any slot

It should be loaded in main menu

[heavy lion]

Again. This is loading and saving fine when in a single level

[frosty heron]

Your load player just get game instance, get mysavegame object , get transform. Apply transform

[frosty heron]

Yea can see the problem why it doesn't work

U r creating new savegame object all the time. Next time you run the function, it won't even get ref to the same savegame object

[heavy lion]

So why is it loading and saving just fine?

[frosty heron]

Its probably doesn't do what u think it does

[heavy lion]

I honestly have no idea.
When I load the map, i can run around. Hit save, move to a new location, hit load. And it loads the previous location. Thats literally all I have implemented it to do.

And I am using the same SaveGameObject everywhere. It is only ever created once.

On gameinstance init

[frosty heron]

You don't want to do that when savegame object already exist

You don't need to create a new one

Simply load from slot

U will get a return value of your savegame object. That's what you need to use

So get rid of that create save game on init

[heavy lion]

ok

[frosty heron]

Create a function in your gi called load game

It goes like this.

Does save game exist? If true , load from slot, promote return value as variable

If false create savegame object. Promote it to savegame variable

[steady night]

Hey Guys im trying to LineTrace on Random points in World

how would i get start origin and end origin when i jsut want it top spawn "Randomly in whole level" ?

basicly "Spawn anywhere in level "

[frosty heron]

Set after cast

Also I will call it load game instead load player

Or at the very least loadplayerdata. But normally I only have 2 types of savegame.

Savegame for gameplay and savegame for achievements and settings

So I keep everything related to the game in one save file

[heavy lion]

ok cool

So for the save game, similar setup at the begining?

[frosty heron]

Also while u at it, should have function to delete game slot too

Or overwrite them

Nah, you would only call savegame when you already load

Or at least call the load function

U will have valid savegame object.

So all you have to do in savegame function is.

Savegameobject -> save game to slot

[frosty heron]

No no

[heavy lion]

So I dont need the create save game object and setter here?

[frosty heron]

Don't create a new savegame object

Yes

U don't set or create new object

[steady night]

https://gyazo.com/90980d1494a9f4318a65ded96151e319

[heavy lion]

Trouble with that is if I try to save I get errors stating its null

[steady night]

how would i get "ranom point in Level" or whatever without using a bounding box ?

[frosty heron]

Because u never load

[heavy lion]

@steady night You dont. Only other option would be within radius

[frosty heron]

You prob jump in editor

Going inside a level w.o loading

[steady night]

hmmm

[heavy lion]

Yeah exactly. So its breaking in editor. But in game, you HAVE to load before saving.
Is that what you mean?

[frosty heron]

U should think your savegame the same way u would in any video game u played. Resident evil, baldurs gate, etc

[frosty heron]

To test is, you have to start from your main menu

[heavy lion]

Gotcha

[frosty heron]

And load the slot then open the map

[heavy lion]

OK.

[frosty heron]

U can always make a debug function too ofc

If u just want to make a new savegame object but I don't c much point

[heavy lion]

This is the functionality for the continue button in my front end menu.

[frosty heron]

U will need to feed slot name

Name me games u played

[heavy lion]

At the minute that is manually set in the load function.

[frosty heron]

Yea u don't typically want to hardcode it

[heavy lion]

No I know. Just testing

[frosty heron]

Give me a name of a game

[heavy lion]

Why?

Skyrim

[frosty heron]

So I can explain but if u already understand then dw

Ahh fk I don't play that

[heavy lion]

Haha

[frosty heron]

Well should be the same

[heavy lion]

Sorry I thought asked the name of my game

[frosty heron]

When u try to load skylight u see your slots right?

That is basically your slot name

[heavy lion]

Yeah.

[steady night]

the name of your game is "skyrim"

😮 ?

wdym copyrightttttt

[frosty heron]

So in main menu whenever u create new game. You can just assign SaveGameX

[heavy lion]

haha, no i re-read it as soon as I replied

[steady night]

xD

[frosty heron]

X being the number of last available slot +1

So creating 3 save game will look like this.

Savegame1, savegame2, savegame3 and so on

Or ask the player to input their own slot name 🤷‍♂️

Skyrim prob let u do that

[heavy lion]

Yeah I get ya. Not got that far yet.

So on new game, I essentially save immediately with a new slot name

[frosty heron]

Right now u can hardcode it to test I guess

[frosty heron]

If u want

[heavy lion]

ok

[frosty heron]

It will create .sav file in your saved folder

For my game, I will save the game only when the player finished customisation

[heavy lion]

I think I am probably going to just use a single player profile.

In Skyrim for example you can have multiple profiles for multiple characters.

Not decided on wether or not to do that yet.

So just using a fixed slot name

What I need to figure out is continue game function.

[steady night]

https://gyazo.com/5046890840bd5947bddf10599f2019c5

how dose this Half size work ?

if i want it to include the whole box what do i do .o

[trim matrix]

Boz Extent is the half-size

[steady night]

aye and the center i just got box extend relative location

right

?

[trim matrix]

for center u use box component's location

for half size u use scaled box extent

[frosty heron]

Your centre is the size area location, your half size is your size area -> box extent

[heavy lion]

@frosty heron So how do I go about setting the location of the player AFTER the level has loaded. That's what I don't get

[heavy lion]

Got it. I think

Might be a hack but I got it working.

I have a bool variable in Gameinstance. bContinue, false by default.
When you click continue, it is set to true.
When the Gamemode for the map loads, it checks the state of said bool. If its true, it loads. Then sets it back to false.

[frosty heron]

Getting on train brb

[heavy lion]

haha

Safe travels!

[shy kernel]

Hi all, I'm trying to get an animation to sync and look the same for everyone on the server, does anyone know the reason my blueprint isn't working?

[dire frost]

you want to switch the macro to "remote" instead of authority

and for authority it can just play it's animation no problem

[frosty heron]

Anytime you want to save. Think of it like check points. Or when in skyrim the player press esc and click save game.

You can just get the player character transform and store its data in the savegame object located in game instance

[frosty heron]

You need to somehow match the time. But practically you can't get them to play at the same time because in network environment there is delay

You can try fast forward the time for the client (which is a drawback it self). Perhaps by accounting for Round trip time and the current position of the anim the server is playing

Other than that prob not much you can do

Also I don't think multicast is the answer here

You prob want server to run client rpc and send the anim time + rtt as a value for the client anim position

[silver harbor]

hey I've just started with blueprints today following a tutorial to get the third person character to fly
I'm trying to change the max fly speed to go quite high but there seems to be a limit to it no matter how high the value is.

[shy kernel]

Thanks very much I'll look into that

[frosty heron]

Actually scratch that, run on owning client will only play the montage for that specific client.

Multiplayer is hard 😔

[honest flame]

from a line trace, how can i get the color of the collided objects vertex?

[shy kernel]

Yeah this stuff is rough lol

They seem to be like .5 seconds out of sync for each client I add aswell

[frosty heron]

Not the hardest bit unfortunately. If you are doing turn base game it's probably fine. Real challenge is when we have to deal with a game that depend on latency. Eg fps

[frosty heron]

And I assumed u haven't even simulate lag?

[shy kernel]

Nope

[frosty heron]

The rpc prob get called at begin play. Each player begins play are not the same. You can see lag when the screen start in pie.

That's prob what makes them get called in different time and we haven't even put some real latency for real test

I think Unreal uses repnotify to play animations. You can try to sync the time on the rep notify function

Set play at , server anim current position + round trip time

[shy kernel]

What nodes would help me do that? Sorry I'm still pretty new at this

[polar trout]

Hi, I have a widget where I am rewriting the onkeydown function, and the issue is that the gamepad face button bottom is recognized as a left mouse click. Does anyone have any idea where the problem might be? I am using the common UI plugin to track the input method change, and it's for displaying text that disappears when a button is pressed. I don't have any issues with the other gamepad or keyboard keys; it's only when registering the A button. Thanks for your help.

[frosty heron]

Don't have editor on me but if u can't play anim at certain position then your option is to use anim montage

[trim matrix]

can anyone help in terms of how I would ensure a timer I run is running on game thread.

currently I get the known issue of assert if accessed outside game thread

[fiery ridge]

Erm, how do I store an actor reference in a widget? There are multiples duplicates in the world but I need that one specific

yes but how do i tell it that one specific actor

[crystal crown]

I should set these variables in the vehiclebp instead right?

[fiery ridge]

@toxic jay

[hollow pond]

you can make the Auto Door a parameter with Expose on Spawn = true, so that you have to pass in an Auto Door reference when the widget is created

[fiery ridge]

thank you both, that worked

essentially, i needed 2 refs

one exposed on the actor that spawns the widget and in the widget

[hollow pond]

yep

[fiery ridge]

much love ❤️

[trim matrix]

Anyone know how I can hide and show variables depending on whether the enum is on corrosponding thing

and when their hidden they retain the value

[hidden shard]

Hello.
I would like to be able to remove the gun in the first person template after equipping it, does anyone know how to do this?

[lunar sleet]

Make a new input action to use for the drop, put it in the weapon component and on started, spawn a new copy of bp_pickup_rifle and destroy component self

Basically the opposite of the pickup

[thin panther]

only in c++

[trim matrix]

arr okay thank you

[crystal crown]

@frosty heron Sorry to ping but is this the "proper" way to do this?

[honest flame]

why is trace complex making my linetrace inconsistent?

like sometimes it manages to find something

and other times it completely fails

really jittery

i do need trace complex because findcollisionUV only works if its enabled

[crystal crown]

So weird i got rid of all casts between character & vehicle. The vehicle is still hard referencing the character, but the character is not hard referencing the vehicle. What is going on?

[mental trellis]

Variable types count as hard references.

[crystal crown]

i don't have any variables that reference the exact bp. only one for base class

[mental trellis]

Base class = Character?

[crystal crown]

yes

[mental trellis]

Shrug

Close the editor. Backup your content folder. Delete the character uasset. Load the editor. TRy to compile the vehicle BP. Look for errors!

😄

[crystal crown]

Literally no errors😭

[frosty heron]

I don't know what is proper because I always find a better ways from time to time.

I don't agree with setting the wheel from anim bp.

You should just set the steering wheel every frame in the vehicle bp and the anim instance just read from there

[crystal crown]

the wheel handlers are static meshes in the vehiclebp. I'm getting the references via interface to the characterbp and setting the locations from there. the animbp grabs them from the characterbp

[faint pasture]

Why isn't the dependency chain like this:

Input -> float steering angle -> steering wheel rotation -> hand placement

Character animbp should just read the locations (assuming hand locations are sockets on steering wheel mesh) and never write anything

[raw orbit]

why does my character not react to these nodes when the AI controller is set to none? as soon as i set the ai it works fine

i know asked this but it was really late and i think it got buried 😄

[vital cargo]

Can anyone assist me? So I have a conveyor belt which moves an item along it, the player can spawn/create them and place them on a grid. The issue I'm having is, I have a collision box to move the actor that lands on it but by the time it reaches the 2nd conveyor belt the offset speed is double due to double overlap, how would I get around this?

[thin panther]

Doing your grid based building with so many overlaps isn't good

Just clamp with maths

The engine even has built in functions for calculating grids

[heavy lion]

When using a pure cast to say the gameinstance. What is the difference between using an Is Valid and a branch from success?

[honest flame]

https://gyazo.com/93588e2f96f0d7594765e535e630dc0d

why does tracecomplex do this? when a cube shows its collided successfuly, but when it doesnt it means it cant find it. I need tracecomplex on for the project im making.

[vital cargo]

How would I clamp it?

[faint pasture]

Show mesh complex collision

I'd guess normal direction

[honest flame]

complex collision

[thin panther]

I forget the function exactly, but there's one built in for grids

[vital cargo]

and are you talking about the 2D grid execution macro? or is there another way of doing grids that I don't know of

[thin panther]

Ah yeah I was getting confused with that. I don't remember the maths off the top of my head, but it's well talked about

[tight pollen]

someone can look #materials

[thin panther]

Just be patient

[crystal crown]

i have wheel handler sockets on the vehicle mesh but i'm attaching static meshes to them in the vehiclebp. i guess it's not necessary, i could just adjust the sockets themselves. how would i set it up with just sockets?

I need to write from the characterbp anyway tho for handik. i can't have all logic on the vehicle. Because i'm interacting with the vehicle

[frosty berry]

In BP's, when you have a big scene (space, forest, city, etc) and want to spawn things, what blueprint is best practice for doing that?

[crystal crown]

not an expert but different spawner actor blueprints?

like car spawner, npc spawner etc

[zealous moth]

single player or multi?

@dawn gazelle in the end, using the array was the optimal solution. It made insertion much more smoother at the construction level

[trim matrix]

guys how can i see the range of my radial damage with falloff

[hollow pond]

draw debug sphere with the same origin and radius as the radial damage

[trim matrix]

thanks

[frosty berry]

multi

[zealous moth]

that is going to be more difficult than sp :/

I would refer to the multiplayer channe

[fleet comet]

Hi how do you get an actor to respawn in its original position when it falls of the map

Can someone visualise it for me

[hidden shard]

Thanks for the reply. I was able to implement it.
I thought I had to use the detach node, but I see I don't have to.

[frosty berry]

If the game was SP, how would you recommend doing it?

[zealous moth]

level streaming

[elder lodge]

isn't there a way to set actor location?

set a killzone with a mesh or something that triggers when they hit it

[fleet comet]

Maybe idk

[elder lodge]

i was trying to lead you into the idea that yes, there is a way to do that

[frigid plume]

Hi, simply want to use LaunchCharacter node with AI, but it doesn't work

Do I need to make a change in the actor details?

[elder lodge]

have you checked that the event fires?

[frigid plume]

still not working

[elder lodge]

Try a bigger number honestly

and map it to a button and see if you can print string

[trim matrix]

guys how can i destroy a particle emitter without connecting the spawner exec to the deactivate exec?

[frigid plume]

no, not works

😦

i tried 15.000