blueprint

[rustic sundial]

the problem persisists with and without timeline

[gentle urchin]

relative to the actor that holds it

[rustic sundial]

OHHHHHHH

so wiat

are you saying the door doesnt teleport to the location i set in the node?

it teleports to those coords RELATIVE to the actor?

[gentle urchin]

yep

something like this

is what you could do

Or this, with automatic closing 😛 better like this i suppose

OpenOffset is whichever direction you wanna move it

Next level would be the entire transform

making the variable instance editable (the eye)

suddenly you have a relatively versatile door bp

Now when you place the door in the level,

all you have to do is edit its transform offset

[gentle urchin]

Hover -> drag and drop?

just like any other node

its called a reroute node

double click the wire to create one

or drag and search

[delicate scroll]

Hey, quick question. Is there a relatively simple way to scale a widget to the screen size? So it fits regardless of the screen size.

[gentle urchin]

There's always the scalebox

probably not gonna look nice on all screens tho

i've heard that takes a ton of work

[delicate scroll]

Hmm... That doesn't sound idea lol

[gentle urchin]

Nope 😛

[timber knoll]

They always scale?

[fiery glen]

you define their scaling behavior in the widget designer (corner anchors etc)

[timber knoll]

https://docs.unrealengine.com/4.27/en-US/InteractiveExperiences/UMG/HowTo/ScalingUI/

And this

[delicate scroll]

Oh thanks, I'll check it out. Sorry I didn't see this before.

[sinful gust]

Is it possible to have line trace hit then follow the surface geometry of a mesh?

[earnest tangle]

Follow it how?

[tawdry mural]

probably something to do with "end" trace input

save a hit reference and then change the end trace to it

¯_(ツ)_/¯

[gentle urchin]

Sounds like he wants the trace to 'bend' along the mesh surface

At a specific height above mesh surface ?

[tawdry mural]

@sinful gust

[sinful gust]

Like having the trace 'bend'/bounce to follow right along the faces of the geometry

And ik it's kinda a stretch to ask lol. I'm going to experiment and somehow try to do that when I get back to my pc. Or something like it

[gentle urchin]

Not easily possible

Whats the purpose of it?

[sinful gust]

I was wondering if there's a way to do real time aerodynamic rendering that can adapt to almost any 3d model. Like faking a fluid sim. But with casting rays

And instead of using hardset values which is the easiest way if I just wanted to do normal planes

[tawdry mural]

i dont think ray trace can work like that

but i dont think alot in general

[sinful gust]

Yeah I'm only asking because I know you can simulate realistic projectiles/involves changing direction but having it change and follow multiple edges and faces is a bit much to ask ngl

[tawdry mural]

because you start a trace from your camera idk what can you do after

[sinful gust]

Yeah exactly!

[crimson geyser]

Hi, I want to have a wall turn 180 degrees when on begin overlap. But I want it to rotate 180 degrees again when the character overlaps the box again. Can someone help with that? Now it only turns around once.

[gentle urchin]

Change it to play from start

[crimson geyser]

That was easy... Thanks haha!

[rugged flame]

Hello, BP newb here. Trying to update the plugin Ultra Dynamic Sky (weather) using a UMG combobox. How do I connect the selected item in the combo box to the type of weather in the Change Weather Using Type node?

[sudden iron]

hello good evening, i want to ask about the "interface" in blueprint , im still confused about how its work and why we need it

[tight schooner]

are you talking specifically about "blueprint interfaces"? See: https://youtu.be/EM_HYqQdToE?t=2204

if you're talking about interfaces as a general concept then that's more open-ended

encapsulating various forms of "blueprint communication"

(casting, dispatchers, parent classes, etc.)

[icy dragon]

https://docs.unrealengine.com/4.27/en-US/ProgrammingAndScripting/Blueprints/UserGuide/Types/Interface/

[sudden iron]

thanks guys @icy dragon @tight schooner

[slender idol]

Any idea why the shader complexity view mode won't work in a packaged game? It just displays the default texture no matter how long I leave it like that.

[faint pasture]

Yeah nah that's gonna be hard.

You can maybe do some sort of runtime baking of the fluidics but aero is crazy insanely complex.

[fiery glen]

most physics games these days appear to bake it in the build mode

[sinful gust]

Yeah that seems to be the best route to take on this. It would probably take me a year to finish it if I did any other method

[icy dragon]

Even God of War had to simplify their 3D aerodynamics a bit. lot.

[halcyon kelp]

Hey everyone - wonder if someone can help...

I'm trying to get an actor (default scene root) to move to another location (discard pile) - but it seems to go in a very weird direction (the discard pile is directly ahead, but default scene root goes high up and stops before reaching the discard pile).

This is my blueprint here, I think the problem is that I can't simply just get the location and tell scene root to go there... but I could be wrong? Anyone have some guidance for a poor soul :D?

[drowsy jungle]

Hello guys I am new here

Would any1 be able to help me out with a catalog I am making

An archviz related catalog

[timber knoll]

don't ask to ask, just ask

[drowsy jungle]

I need voice chat

I'll share screen

Can you help @timber knoll

?

[timber knoll]

never done anything archviz related

so most likely not sorry

[drowsy jungle]

Its about measuring distance between objects

I've created a spawning system. But I need every spawned object to measure distance, Once I get 2 points I can do the rest adding the annotation line

[timber knoll]

have you tried bounding box?

it tells you the total dimension of an asset

[drowsy jungle]

Yes

[timber knoll]

then you would just have to translate that to world space I guess

[drowsy jungle]

But I need to make a line trace from the center of each face of the bounding box

On Line hit, I would get the second point

But How to do the first part ?

I need it to measure distance in game

[timber knoll]

center of a face?

[drowsy jungle]

Normal

Face-Normal

[fiery glen]

if it's just a rectangular (box) shape of the entire actor you could just get the edge and then split height/width to get the center?

[timber knoll]

that would just be your actor directional vectors

[fiery glen]

I think we need a diagram to explain this

[drowsy jungle]

Are you available for a voice chat @fiery glen ?

3 minutes max

[fiery glen]

fine I guess

[trim matrix]

Guys, I have an actor that I want to appear first as a trace result, even when behind other actors (it's a Gizmo). What is a good way to do it?

[dim robin]

if i have the same clickable actor instanced multiple times in the level, what is the best way to access and reference the specific one that is getting clicked?

[halcyon kelp]

Can anyone help me out here?

#blueprint message

[tawdry surge]

@dim robin the on click event returns a reference to the clicked actor. Atleast when its assigned as a delegate it does

[dim robin]

yes but they alll have the same reference, i need to treat them individually, like i need to know if i click on number 2, number 1 has to go back to it's original place

[tawdry surge]

No they don't

It returns the ref to the specific one clicked

I literally just made a rail shooter, using point and click mechanics. I promise it works

[dim robin]

ok i'll post a screenshot of blueprint, i need help, i can't make it work

[trim matrix]

Figured it out. For future dudes - just create a specific trace channel for the gizmo, and if it doesn't return a hit, run the regular one.

[dim robin]

let's suppose i click on first cube, and then on second one, i need to put the first cube back in his place, but i can't reference it because the reference is overwritten with the new cube clicked

[tawdry surge]

You need a branch to determine if the player already has an item selected and another variable to hold the last clicked item so you can put that back b4 grabbing the currently clicked item

[dim robin]

yes i know, what i'm trying to say is i can't store that "last clicked" item, because it gets overwritten everytime i click

so basically after a new cube has been clicked i can't get the previous one anymore

[tawdry surge]

You miss understand. You need two variables one to hold the current variable, which is changed every time you click and another one which is changed after the branch passes the check. If it fails then you put the one you are holding back b4 assigning the new one to the second variable and picking it up

[gentle urchin]

On click -> check if you have existing valid reference -> if so do what you need to with the old one-> target the new one

I do it with singular variable, but can be done with two if you wanted :p maybe you need two in this specific case, but i'd think not

[tawdry surge]

You don't NEED 2 but will keep it cleaner

I prefer to assume I will 100% forget what any particular BP does and like to make it as simple to read as possible

[gentle urchin]

I'd argue that 1 variable is easier to reflect on compared to two , especially with vague namings like 'old' and 'newest' suffix etc , but thats probably more of a preference

Doesnt matter much, both methods work

They basically do the same

[dim robin]

lucky you can make it work 😆

[gentle urchin]

Check if the existing variable holds a valid reference before setting it to the new reference

[tawdry surge]

Don't name things "old"..
LastClickedActor and CurrentlyClickedActor are much more descriptive and accurate

[gentle urchin]

Heh. Well, last and current is also prefixes which can add confusion to their use imo.

Last ~ old

Poteto tomato

Its all just details, the most important part is consistency 😅

[dim robin]

i don't understand, the reference is always valid..

[tawdry surge]

To a point.. prefix as old or whatever is fine but I mean don't just name it "old"

[gentle urchin]

In your case you may never invalidate it, but the point still stands. You can check if they're equal. If not equal then reset the existing before selecting the new

If i werent in at a course i'd show some code but

My hands are tied

[gentle urchin]

Ofc, its why i specified suffix altho it can also be prefix :p generally i try to avoid names which can rise a question of a variables current relevance.. why keep track of things you're done with :p

[tawdry surge]

I'll be on my pc in like 20 mins or so.
I can show you a screen shot then

[dim robin]

thank you, i would be very grateful, my brain is exploding i can't figure this out

[tawdry surge]

It's OnClicked event-> set CurrentlyClickedActor->branch->true->set LastClickedActor to be CurrentlyClickedActor-> pick up LastClickedActor

The branch condition should be the result of an == check. Is LastClickedActor == CurrentlyClickedActor.

Off the false pin you then put the LastClickedActor back->set LastClickedActor to be CurrentlyClickedActor-> pick up LastClickedActor

[earnest tangle]

it would be simpler to just set last clicked actor to current clicked actor first before doing anything else, since then you don't need to repeat the logic in the branch :)

(but yeah the general idea is good)

[dim robin]

i'm trying now, in the meanwhile thanks a lot

[tawdry surge]

You can do it with less nodes this is just more descriptive and simpler to follow

After it works then optimize

[supple meadow]

is there a way to reference a bone or a socket so it can plug into here? (in character blueprint, not anim one)

I've been bashing my head against this for a full day now, maybe I'm misunderstanding something?

[earnest tangle]

What exactly are you trying to do?

[supple meadow]

I'm trying to make it so the character pivots around that particular bone as opposed to the whole scene

[earnest tangle]

is it one of its own bones or is it another actors bone it's attached to?

[supple meadow]

Own bones yeah

I'm basically trying to replicate aim offset on the z-axis

[earnest tangle]

I'm not 100% sure if there's some nice way to do it, but you can rotate around a point with some math

I can never remember the formula for it though, I'm sure you can find it if you google something like "ue4 rotate around point"

[supple meadow]

won't that cause clipping then?

[earnest tangle]

How so?

[supple meadow]

well if it's just slicing the mesh in half and rotating it around an arbitrary point?

or am I missunderstandding

[earnest tangle]

I'm not entirely sure what slicing the mesh in half has to do with rotating it :)

[gentle urchin]

Rotate around axis , isnt that a node that could be used here ?

[earnest tangle]

That's for rotating around a specific axis, it doesn't rotate with a specific pivot point iirc

pivot/origin

[supple meadow]

well the problem I have is to set that specific pivot point

that's all I need

[earnest tangle]

Yeah so there's a formula you can use to do that, it's something like set position = position - pivot, rotate, set position = position + pivot

[supple meadow]

like this, but make the pivot not a scene but a bone/socket

[earnest tangle]

It might not be exactly what I just said but it's something along those lines :P

[supple meadow]

but I need it to be a scene component for setworldrotation to work no?

[earnest tangle]

set world rotation's target is the thing you're rotating

so if you say set world rotation(pivot, new rotation), then it rotates pivot

so you'd need to actually do set world rotation(mesh, new rotation)

or move pivot into the pivot point, attach mesh into pivot, rotate pivot

[tawdry surge]

This sounds alot like a target lock mechanic thats in every melee game ever

[earnest tangle]

yeah tbh I don't quite follow why he wants to do it, and I'm not quite sure how his actors and components are set up which might be leading into some confusion :)

[supple meadow]

I'm completely lost honestly

[earnest tangle]

Maybe you can show what your actor looks like and what the component setup on it is

so that what you want to do is easier to visualize

[supple meadow]

so, trying to replicate z-axis rotation but only for other players

[sharp rapids]

https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Math/Vector/RotateVectorAroundAxis/

From what I understand,
You have your "mesh" and a "pivot"
Get direction from "mesh" to "pivot"
Rotate that direction vector about the "pivot" by the required angle
Calculate new position of the "mesh" using the direction vector

[supple meadow]

The pivot is a placeholder, it's nothing

it's what I want to figure out

[sharp rapids]

Well, You do have something like a Vector for the pivot, right?

Like a Position?

[supple meadow]

I want the pivot to be the location of a specific bone yeah

if that's what you mean

[sharp rapids]

https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Components/PoseableMesh/GetBoneLocationbyName/

Take a look at this

[supple meadow]

I tried that already, setworldrotation only accepts scene components though

[sharp rapids]

Yeah, That's the intended behavior

As @earnest tangle said already, SetWorldRotation sets the rotation of the 'Target'

[supple meadow]

right, I feel like I'm missing some fundamental, so if I get the bone location how do I feed that into setworldrotation?

[sharp rapids]

btw I think, You'll need a SetWorldLocation rather than SetWorldRotation

[sharp rapids]

You don't

There's going to be some vector mathematics involved

[supple meadow]

is there really no way to maybe add a scene component and somehow weld it to the pivot point?

because I have no clue how to do this vector thing.

[sharp rapids]

There are 'Bone Sockets', but I don't think it's a solution

As far as I'm aware, you'll have to do vector math

[faint pasture]

@supple meadow what kind of end result do you want to achieve?

[supple meadow]

I just dont understand how I can translate vector math into character rotation

[supple meadow]

trying to replicate z-axis rotation on a particular pivot point

[faint pasture]

Are you trying to move the capsule around or the mesh?

[supple meadow]

the mesh

I think

[supple meadow]

on second look it seems I can only do sockets

[faint pasture]

Rotate the mesh and then offset it by mesh location - bone location

With z zeroed out

[supple meadow]

I have no idea how to do that

[faint pasture]

You should already know how to set the mesh rotation. Then just set the mesh location relative to capsule to mesh location - bone location.

[sharp rapids]

I think that's a better way than what I was saying

[faint pasture]

Or just author your animation so you don't need to do this

[supple meadow]

ok so I understand even less now

I have no idea how to change the rotation of the mesh, only how to change rotation of components

[tawdry surge]

@dim robin did you get it working or you need to see the BP script?

[supple meadow]

and what's authoring animations got to do with replication?

[faint pasture]

Just dragged off a reference to the mesh and type in set rotation.

Also what's any of this got to do with replication? You are asking about being able to pivot a mesh around a bone

[supple meadow]

yes but specifically to replicate it to other players, I think I mentioned it earlier

which is why I cant use the animation bp to do it I think

[faint pasture]

You just do the offset everywhere based on the same information. When you're running, you're not replicating the movement of the legs, you're just replicating the fact that the capsule was moving and on every machine, it translates that into the running animation. Same idea.

So exactly what mechanic are you trying to achieve here buy pivoting a mesh around the bone?

[supple meadow]

replicating the player looking up and down

[faint pasture]

Yeah you would just replicate the look Direction, and then on every machine the animation will be handled from that information.

So why are you pivoting the whole mesh around that instead of just rotating the bone or using a blendspace or aim offset?

[supple meadow]

because this is the only way I figured out how to do it

I want to rotate the bone, but that's done within the animation blueprint and I'm working inside the character blueprint

[faint pasture]

You should do animation stuff in the animation blueprint whenever possible. Replicate the aim direction and on every machine, the animation blueprint will use that to drive the pose. Matching things up.

[sharp rapids]

Are you manually rotating the bone to make the character look up/down?

[worthy frost]

you should use Control Rotation and pull the yaw/pitch from GetBaseAimRotation on the Character

Pitch is replicated, but you need to use GetBaseAimRotation->Pitch

[supple meadow]

that was my goal originally

[worthy frost]

what you doing, making player look left and right?

[supple meadow]

up and down

[worthy frost]

sec

[pastel rivet]

Is it possible to get a soft object reference name without loading it?

[supple meadow]

I understand that's what I need to do, and I'd do it if I knew how I just dont know what specific steps I need to take.

[worthy frost]

http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_rViXJtZLCq.png

http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_p2hGHERGyg.png

[supple meadow]

so this is all done within the animation blueprint?

[worthy frost]

yes

even turn in place is done via animation bp

@supple meadow http://thegames.dev/snaps/gnqOqK1WWZ.mp4 all this is done via anim bp

[supple meadow]

huh I see

what's the newaimoffsetblendspace?

[worthy frost]

a 2D blendspace

err sorry aimoffset

[supple meadow]

is that something you create, like a variable?

[worthy frost]

no

its an asset

that holds animations for specific aim offset

http://thegames.dev/snaps/90I90HltFj.mp4

[sharp rapids]

https://docs.unrealengine.com/4.27/en-US/AnimatingObjects/SkeletalMeshAnimation/AnimHowTo/AimOffset/

[supple meadow]

right ok I see

[dim robin]

i just can't..

[sharp rapids]

btw are AimOffset and Blendspace exchangeable?

[worthy frost]

no

[sharp rapids]

I mean, Both basically lerp between animation poses
Both have identical setups

[worthy frost]

Blendspace is more for locomotion

i mean technically you could...

but not tried

i know aim offsets are additive

[sharp rapids]

Yeah, But there's no in-build rule, like you should always put only locomotion anims in Blendspace?

What would happen If I just put aiming anims in a Blendspace

[supple meadow]

so are these screenshots you posted just in the event graph of the animbp?

[worthy frost]

@sharp rapids nothing really, it might work

just not tested it

@supple meadow event graph and animgraph

i would suggest maybe doing a UE4 course on it

there is one at https://learn.unrealengine.com

[supple meadow]

I'll definitely take one

[worthy frost]

Animation and AnimBP is not an easy thing

[supple meadow]

relying on youtube tutorials has produced very poor results for me

[sharp rapids]

hmm

It's possible

Have you tried using an Actor reference?

Instead of the Player Character reference

[worthy frost]

@swift pewter if its from a overlap detection

two choices: Single player: You can just check if Actor == GetPlayerCharacter, Multiplayer, you will need to cast cause GetPlayerCharacter is not suitable for multiplayer in mostly all cases.

[sharp rapids]

Or you can use Tags

[worthy frost]

Tags again is fine if its single player

multiplayer, no

@swift pewter http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_yBbTitAreA.png

this is the easy way for Single player

no additional checks are needed

you know the overlapped actor is the player

not noticable

people are scared of cast's

unless your doing it every frame

you wont even notice

even doing it every frame, you would hardly notice

[sharp rapids]

I'm one of those people 🙂

[worthy frost]

just like people are scared of Tick cause someone once said "Ticks are bad avoid Ticks"

so they make a timer to run at .006......

[sharp rapids]

Nah, I'm not one of those

[worthy frost]

yes BP ticks are slow, and we tend to avoid BP ticks for classes that there can be a lot of in the world

but we implement it in C++ for the performance boost

Use tick do not abuse tick

some things HAVE to be done on tick

no avoiding.

[crimson geyser]

Do you have an example? Just curious

[worthy frost]

you could never get smooth rotation without tick

[sharp rapids]

The fear about Casting is it causes it to load the 'casted' blueprint in memory even if it doesn't exist physically in the world
If we don't check it, we can possibly arrive at a place where loading the Main menu will load the final boss in memory.

[worthy frost]

@sharp rapids this is why you have a base BP

with no assets in

and only cast to that.

@swift pewter no

i also don't see why you would need to do that on tick

BTW, just a heads up, even having a empty Tick node that is active (even if no pins connected to it) will cause the engine to tick the BP, adding cost 🙂

http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_rM8NDAiins.png

this wont be called cause its like a fake node (hence why its kinda transparent)

http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_LlnW2JhLYU.png

this will cause that BP to tick

and add cost, even tho you are not doing anything with it 😛

[sharp rapids]

But now that I think about, Isn't casting to Player essentially harmless? Cause the Player BP is going to be loaded all the time anyway
The problem would be casting to other things in the Player BP

[worthy frost]

not really

what if you are in a main menu

and one of the bp's there has a cast to your player

would load your character even though you are not using it

[sharp rapids]

Ah, didn't think about that

[worthy frost]

not that you would notice

[gentle urchin]

Is this enough to remove the tick overhead? I thought one had to disable the tick on the actor?

[worthy frost]

tho if you are calling it alot

it would be benefical to cache

@gentle urchin you still need to disable the actor ticking to avoid ticking the C++ code

but the C++ tick is cheaper than the BP cost

[icy dragon]

So to just use C++ ticking, but not BP ticking, it's just the matter of deleting Event Tick node?

[worthy frost]

bp has additional cost of navigating the VM (virtual machine) and stuff

@icy dragon yeah

or leaving it in the disabled state

[sharp rapids]

Also, Would disabling the 'Actor Ticking' also stop all the components ticking?
Or do the Components tick individually?

[gentle urchin]

Ah. The more one knows ! Didnt know the c++ tick got disabled by it, tho it makes sense

[worthy frost]

components are ticked themselves

not via the actor

[sharp rapids]

Shouldn't that be the intended behavior?

[icy dragon]

Good to know then. I never disable actor tick on the Class Settings all this time, but always delete all the premade Event nodes if starting from new BP.

[worthy frost]

@icy dragon BPImplementable events wont transverse the BP vm, if the node does not exist in the BP

@icy dragon those default nodes are disabled, and wont be executed

so they are safe to be left

once you connect a wire to them, they are no longer disabled

[sharp rapids]

So you reset the references on Player Respawn, no need to check it every tick

[icy dragon]

It's just one of my own habit that led me to delete them, even if I would use them just few seconds later lol

[worthy frost]

@swift pewter you could technically cheat n a single player game

you could hold the controller reference

and use Controller->Pawn

Controller never changes if player character is destroyed

why would you need too?

when your AI spawn

you grab the player controller

then you just use PLayer Controller -> Pawn

instead of GetPlayerCharacter

(warning this is only for single player game)

then you cast when you need too

AI in Red Solstice 2 uses a special aggro system, and our monsters choose who it wants to target, either via Perception system or if no one is percepted, it grabs all enemy pawns in the world, and chooses one (via some complex scoring logic)

but for single player game, you can cheat a lot

if the only target is always the player

[hoary knoll]

How can I scrub through an animation during runtime by clicking and dragging, for example opening a book by click dragging the cover or a door, or any other animations?

[odd ember]

I guess even if the target isn't the player, you cheat as long as you know all the targets

[icy dragon]

You already posted this on #animation just within a few minutes.
That aside, maybe this node is what you're looking for.

[torn kettle]

:triangular_flag_on_post: BilateralBird#2758 received strike 1. As a result, they were muted for 10 minutes.

[tawdry mural]

might be modifiers

or shape keys

does it have any ? in blender

try exporting it without shape keys

or with it

you never know

export options

go through it

[icy dragon]

I know how to fix that, but it's a ripped model, and it's one of those underground reverse engineering knowledge.

Better for me to not spoil it here 😉

Also it's not even remotely a BP issue.

[tawdry mural]

whos talking about bps

you anime guys are weird

[icy dragon]

This is a #blueprint channel.

[hoary knoll]

@icy dragon how can I correspond mouse X axis movement (after click hit) to the new position in animation sequence? and does this only work for one animation?

[icy dragon]

It's just the matter of float conversions, and I think it only work on Animation Asset mode, not Animation Blueprint mode.

[wary shadow]

I would like to move an ball if an event box is triggered by an actor. Inside the ball event graph, how should I call the event triggered?

[odd ember]

how is the ball and the trigger connected?

[faint pasture]

Easy/crappy way.

Event box gets actor of class Ball when it's triggered, and calls Move on the ball.

Ball moves.

[sturdy loom]

I'm trying to do something with a Camera Actor
I'd like the camera to always align according to two actors on the map

And I wanna know if there is a way to get the "axis" between these two actors so I can put the camera on that axis

Forgive my digusting drawing skills, but here's the general idea

I want the camera to be on the red cross thing

[last abyss]

seems like a normals issue, in the top right on blender check this. then select all faces (in edit mode ofcourse) and ALT+N -> recalculate outside. now from the outside all faces should be blue, and from the inside they should be red if they aren't then you have to select the faces that should be blue from the outside and ALT+N -> flip

[worthy frost]

@hoary gazelle We don't condone or allow the discussion of using ripped/pirated assets here.

[gentle urchin]

Find look at rotation should help you out

[faint pasture]

Distance along that line?

If point A is the far one and point B is the close one, direction vector from A to B is

DirectionVector=Normalize(B-A)

The camera is at

B+DistanceFromB*DirectionVector

And camera orientation is

FindLookAtRotation(B,A)

[spark steppe]

here's one for those who love vectors...

[gentle urchin]

Hit me!

[spark steppe]

how would i convert a right handed orientation (rotator) to the left handness of unreal

i made too much stupid json stuff in the last hours to activate my last 2 brain cells 😄

[spark steppe]

did it hurt?

[tawdry surge]

Wouldn't you just invert x?

[spark steppe]

yea for a vector, but does it also apply to rotators?

[tawdry surge]

Oh Idk. Didn't read rotator, just saw vector up top

[spark steppe]

maybe yaw + 180?

[gentle urchin]

Yeah it did !

I didnt really get the question,

You wanna just mirror it?

[spark steppe]

yes

[gentle urchin]

Yaw 180 would solve it wouldnt it, as you said

[sturdy loom]

that could be one

[gritty elm]

what mean by break rot into axes function

[gritty elm]

use this function to get point distance vector : https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Math/Vector/GetPointDistancetoLine/

Alternatively you can do line trace from one actor to another, so where trace ends, set your camera location/rotation there

[sturdy loom]

thanks

[worthy carbon]

Does someone knows a good tutorial to create an inventory in ue4

[odd ember]

yes but it requires cpp

[brazen merlin]

what kind of inventory?

[odd ember]

wait is the tutorial supposed to be good

or the inventory 🤔

[fringe trench]

Hello folks. I have an actor component that needs a reference to a primitive component in order to adjust its collision logic (collision profile, collision enabled, etc.). I need the referenced primitive component to be different depending on which blueprint the actor component is on. In Unity, this is laughably easy, as I can literally drag in any collider I want into the exposed reference slot in the inspector. In Unreal, I have not found a way to replicate this important functionality. Any tips?

[odd ember]

I exposed collision components from cpp and made them blueprintable

but yeah no reason they shouldn't be default exposed

[tawdry surge]

Or get components by class

[odd ember]

I mean that doesn't solve the problem

[fringe trench]

if they are exposed and blueprintable like you suggested, can I assign them from the inspector? Basically I would like to be able to select from a list of components on the same blueprint, in order to specify the one I'm after

[gentle urchin]

Could you not make some initialize function for it ?

Atleast flexible for the input primitive

[fringe trench]

that is not the worst idea haha

it's obviously better than getcomponent as I can be sure I'm getting the exact thing I want (if I can spell correctly lol)

It would be even more ideal if I could select that FName from a list of names of components on the blueprint class, but I don't expect that to be too much of an option

[solemn musk]

Im using an Any Key to check for which input method is used but it seems to have blocked input from my Keyboard input axis events for other things

this a common issue?

[odd ember]

yes you can. you can even open up the blueprint graph for them

[gentle urchin]

Select the any key node, uncheck the "consume input"

[solemn musk]

thank you

[odd ember]

although I'm a bit iffy about what you mean by inspector

[fringe trench]

I mean assigning the variable "Collider" using the dropdown. I need some way to assign the exact specific collision I want from the same blueprint. Currently that dropdown gives me no options, and I cannot drag any component in there from my blueprint.

[odd ember]

I think that only actors can do that

but I may be wrong

[fringe trench]

I think you'd be right there. This is certainly frustrating coming from Unity, but perhaps the solution of specifying the name directly might be my best bet for what I'm looking for

[odd ember]

unity cant?!

[fringe trench]

ya positives and negatives for sure

[worthy carbon]

Like an inventory of fortnite

[teal nexus]

how can I duplicate a mesh (skeletal or static), flip face normals, offset vertices in Construction script ?

[odd ember]

you can't perform any graphics operations in blueprint

[zealous moth]

Debatable

You can make mat functions with public parameters

[teal nexus]

I only need to do it once, so that I don't have to do it in runtime (which is what material will do, I suppose)

[odd ember]

yeah but that's not blueprint, that's still in the realm of materials. blueprint for good reason does not expose anything to do with the renderer

[zealous moth]

I dread the reason forbthis operation

[odd ember]

sounds like someone wants automatic outlines and doesn't want to invest in making a postprocess filter I suppose

but what do I know

[teal nexus]

not only don't want to, but can't - platform doesn't allow PP

I could do all that in Blender, but since I've done it in the past I have plenty of reasons not to do that ever again

alright then, not possible via BPs

[odd ember]

sadly no

[teal nexus]

thanks

[odd ember]

you could try and see if you can invert a mesh in the mesh editor and spawn it in... not sure how much it's going to save you, but eh

[teal nexus]

probably less intuitive than doing it in Blender (I don't enjoy UE4's mesh editor a single bit)

[zealous moth]

platform doesn't allow PP??? what about shaders or stencils?

[teal nexus]

what about them ?

btw, platform is Quest 2

'nuf said

[odd ember]

forward rendering

[heavy ibex]

Isn't it fun when you're seeing a "Hello" printed to your screen but you have no idea where it's coming from? And if you search all blueprints for "Hello" it shows you every single print string because it's the default value

[brazen merlin]

and today you have learned to take 5 seconds to change the default print string, welcome to the club

[heavy ibex]

Oh I learned it a while ago but somehow it doesn't stop me from thinking "I'll only need this for a second, it's fine"

Unrelated: would someone be able to help walk me through rotating a static mesh using quats? I think I've been able to at least wrap my head partially around what quaternions are but I can't seem to figure out how to implement it. I want to rotate a mesh 36 degrees, interpolated using a timeline

I've seen some old posts indicating it can't be done in BP and if that's the case I'll happily go to #cpp with this question but .. nothing is really clear at the moment.

[brazen merlin]

so that it rotates from 0 to 36 or you want to add 36 deg to the rotation of something? just one axis? once or more than once?

[heavy ibex]

Add 36 degrees, on one axis. It's for a lock, i want it to look nicer

[brazen merlin]

well it only goes one direction, so that is simple enough

timeline or Rinterp both work, you got a preference?

[heavy ibex]

I tried doing it with the pitch and it got really wonky

timeline preferred. I honestly don't understand the use cases for rinterp

[brazen merlin]

ah, there might be confusion between what "XYZ" is relating to pitch, yaw, roll

is each number slot on a cylinder basically?

[heavy ibex]

It worked going from 0 to 36, then 36 to 72 but then it started falling apart

yeah, 10 faces

[brazen merlin]

oh... hmm

[heavy ibex]

I don't understand what was happening but I was told it was due to using euler instead of quats

which .. after doing some research didn't really seem to line up with what I was seeing but .. I'm very uncertain

[brazen merlin]

yeah, not sure, thinking

all i can think of is telling it to use it at quaternions

i forget, but there is a node in bp to do so

[heavy ibex]

I can convert a rotator to a quaternions

but I don't know what that does for me

[brazen merlin]

im trying to remember which is which, i think euler likes to find the shortest rotation distance where quat just adds, maybe i have that backwards

[heavy ibex]

Weird part is I don't know why it would break down at 72 degrees.. I'd think it would break at 180

makes me think I have something else wrong here

[brazen merlin]

well, i was gunna ask earlier, these 10-sided cylinders, you rotated them to place them inside the cryptex thing right?

[gusty shuttle]

Hey guys, off the top of your head, how does one edit and turn a decal with points?

[brazen merlin]

top of my head is off, i dont know what you mean

[heavy ibex]

Their default rotation is 0,0,0

[gusty shuttle]

Off the top of my head, I mean like roads. I think I just need to see how roads are made using decals

[brazen merlin]

so each cylinder is placed in that cryptex with 000 rot like that, sideways like that?

[brazen merlin]

i think you can make roads with the spline system, but i dont really know much more

[gusty shuttle]

keyword is spline indeed

Cool, I have enough info now haha, thanks man

[heavy ibex]

Yyyyes. If I'm understanding you correctly.

[brazen merlin]

sure thing

[odd ember]

quaternions?!

[brazen merlin]

great, very clear, thanks

[brazen merlin]

if you know more, by all means

[heavy ibex]

Not yet!

I gave up on them for a while and just set the rotation directly without interpolating so they just 'tick' into place. I told myself it was good enough. But I keep seeing it and I really want it to rotate over a timeline

[brazen merlin]

well, although you set the rotation, if you saw the values, they could get wonky without knowing

i would think that from 72 +36, is gets weird because it crosses over 90

[odd ember]

quaternions

[brazen merlin]

it might decide 72 in x while 00 in yz, then passing 90, it wants to do 0 in x with 90 in both y and z

[heavy ibex]

Yeah, quaternions. I got a basic understanding of them but I still have absolutely no idea how to implement them. And online doc for how they can be used in UE4 seems very hard to find

So I'm back for help

[brazen merlin]

so yeah

[odd ember]

they're exposed to blueprint

ask the quik mafs geniuses in #cpp perhaps

[heavy ibex]

I can convert a rotator to a quat but .. does that help me?

ok

[brazen merlin]

it essentially converts it from euler to quat

[heavy ibex]

it seems like converting from euler to quat is a bad idea

[brazen merlin]

confusing, but it exists for a reason, to hurt others

[odd ember]

well you do the calcs in quat then convert back

[heavy ibex]

I tried to get a better understanding of it by adding 36 degrees to the yaw then converting it to a quat and printing the output to see how it translates which gave me 0.0,-0.309017,0.0,0.951057

which .. isn't nearly as nice of numbers to work with as "36" is .. but .. if it works, I suppose ..

[brazen merlin]

yeah, that's starting to hurt me

[heavy ibex]

im sure the rounding will muck things up if people rotate it a couple thousand times but hopefully it doesn't come to that

[odd ember]

it wont, quats are stable

you can rotate around axis in quat too

[lean thistle]

When launching multiple standalone instances of a project from the editor, does one GameInstance exist independently for each Standalone window, or does only one exist for the computer?

[heavy ibex]

nailed it

[odd ember]

magnificent

[brazen merlin]

if someone tells me an easy way to make a gif, i think i can show it working without anything truly complex

[heavy ibex]

Should be one per instance

i dunno about gifs, i just record short videos in obs

[brazen merlin]

yeah i figured

[odd ember]

I'm sure you can find the math online as well btw

[heavy ibex]

Reading this now: https://ninepointeightgame.com/game-updates/quick-quaternion-tips but not certain yet how usable it will be for my scenario

[maiden wadi]

Ew. Quats.

[faint pasture]

@heavy ibex I couldn't find your original question but you want to use spherical lerp, not rinterp

Rinterp is implemented in Euler for some damn reason

[grave relic]

Anyone that can help me with this? Im spawning actors in a volume, linetraceing down from there spawn point. Then i want to use the Impact normal to aline the spawned actor to the normal of the hit mesh

[faint pasture]

So what's the problem?

[brazen merlin]

video comin ur way

[grave relic]

I dont know how to do the math hehe

[faint pasture]

Make rotation from z vector

[grave relic]

Just like this? Couldent get it to work

[maiden wadi]

World rotation, also.

Well. Might not make much difference here, but the trace math will be in world.

[grave relic]

Dient change :c

[faint pasture]

What does it do?

[maiden wadi]

You're rotating the component

You need to set the transform's rotation.

You can delete the Set rotation entirely.

I think. Where is that Transform coming from?

[brazen merlin]

Here's the mockup, trying to get video @heavy ibex

[grave relic]

This is where i set the transform

[maiden wadi]

Set your MakeRotFromZ there.

Make sure that's orienting them correctly, then we can manage the random yaw rotation later.

[grave relic]

Hooked the make rot from z into the make transform, nothing has changed

[heavy ibex]

This is effectively what I had .. this works for you?

[maiden wadi]

To be sure if it's the trace or not, make a rotation of 0roll, 0yaw, 45 pitch. Try that in the make transform.

It should rotate them to lean back a little.

If that works, your line trace is returning more or less null, or probably upvector.

[odd ember]

real easy

[grave relic]

They all get the same rotation

So yeah probly the linetrace

[odd ember]

all you need for the quat is the axis that goes through the numbers (same for every number)

and the angle you want to rotate

boomski

[brazen merlin]

yep

[grave relic]

The linetrace @maiden wadi

[maiden wadi]

Set the trace to draw for like 20 seconds. See what it is hitting, or what it's not hitting.

[grave relic]

hmm okey i see, seems like its traceing up

[brazen merlin]

video came out awful, but the print string says this

[heavy ibex]

Ah haaaa but try it with pitch instead of roll

[brazen merlin]

ah! great point

[odd ember]

this looks faulty

[odd ember]

you move the problem from 90 to 180

[maiden wadi]

Are you just trying to draw them straight down?

[brazen merlin]

you are correct, I see it, though now I would say, you should use roll!

[maiden wadi]

If so, take the start point, and just do + MakeVector 0,0,-1000 and use that for the end point.

[brazen merlin]

but as a problem solver, this is intruiging

[heavy ibex]

done. wrap it up

[grave relic]

Yeah, the original use for the linetrace is to check if the object is inside another object dont spawn it

[heavy ibex]

ok, enough trying to avoid quats. gonna smash my head into it until it makes sense

[odd ember]

dude

I gave you the solution

it's really simple

[heavy ibex]

You did. But I don't yet understand how to implement that

Maybe I'm having the dumb.

[terse goblet]

Hiya! I've made drag drop using drag drop operation. I want to make item rotation with right click, but any mouse click does the same as left button release - ends drag drop. If I do it over slots, it does drop to them. But if I do it over nothing, nothing happens. Like drag drop just ends.

[heavy ibex]

It needs to rotate around the Y axis

[odd ember]

do you know what an axis is

[heavy ibex]

Yeah

[odd ember]

do you know what an angle is

[heavy ibex]

Yep

[odd ember]

DeltaRotation = FQuat(Axis, Angle);

[maiden wadi]

This is getting intense, for rotating a lock component around a single axis. O.o

[odd ember]

sadly euler screws with reality

[maiden wadi]

Just rotate the thing 90 degrees on yaw, and use Roll.

[brazen merlin]

yeah, i would've change the axis in the 3d software i made it in, but this is kinda fun too

[maiden wadi]

Or.

[heavy ibex]

ya, guess that might have worked

[maiden wadi]

Use pitch, and just keep a float that goes from 0-360. It doesn't gimbal lock that way.

[brazen merlin]

that's what i was meaning a few minutes ago, but the comedy!

[hallow helm]

Hello everyone! I've been running into an issue for the past few days trying to get spline meshes to draw during gameplay. Here is my forum post on the issue: https://forums.unrealengine.com/t/runtime-spline-mesh-component-only-generating-once/261185/10

I'm almost thinking it may be an engine bug of some kind?

[gentle urchin]

I used splinemesh and had them generating fine the other day , atleast.. i think they were

Can double check tomorrow. Small task to reconnect it

[glossy kraken]

hey, my friend keeps getting this error where he set up his character but the default character is showing up instead

does anyone know any solutions?

[faint pasture]

Set default Pawn class in the game mode

[odd ember]

lmao

[glossy kraken]

yeah he already did so thats why we are confused

[faint pasture]

Are you sure the game mode is being used?

[heavy ibex]

Is there an instance of the default character in the level?

[odd ember]

I believe this is correct:

it may do the quat internally

[glossy kraken]

what do you mean?

[odd ember]

lmao indeed

all that work to find a node that is right there

[faint pasture]

@odd ember what exactly are you trying to do here? That looks weird

[odd ember]

rotation is weird now?

[faint pasture]

No I mean that looks like a weird way to do whatever it is you're trying to do. What's the end result you're trying to achieve?

[heavy ibex]

actually seems to run into the same issues as using euler

[odd ember]

I was showing off a solution. nothing weird about it. it circumvents a euler issue

[tight schooner]

Don't have a solution for you. All I can say is the other day, I couldn't get an editor-only function that adds/adjusts points on a preexisting spline component to work until I manually jiggled one of the points, and then magically my editor only function worked correctly. Inexplicable. UE4.26

[odd ember]

which axis are you trying?

let me see if I can hit the same

[faint pasture]

@heavy ibex what are you trying to do?

[heavy ibex]

grabbing the right vector from the mesh

[heavy ibex]

#blueprint message

[faint pasture]

On a phone that just tries to open it in the browser lmao

[heavy ibex]

Trying to rotate 360 degrees, 36 degrees at a time using a timeline so it's smooth

ahhh

it's a combination lock

https://cdn.discordapp.com/attachments/221798862938046464/910267078664130580/2021-11-16_15-35-59.mov does this work at least?

[faint pasture]

Just do the rotation in local space. I'm assuming you have some sort of component with an axis aligned with the lock right?

[heavy ibex]

some sort of component with an axis aligned with the lock right? repeating this in my head a couple times to try to figure out what you mean

[odd ember]

I tried with all 3 axes, and it worked for all of them

[faint pasture]

Like a mesh or something. I don't know what your blueprint looks like, but this should be as simple as setting relative rotation, only having to change one of the values

Say your combination lock wheel mesh points down local X, just set roll and you're in business

[odd ember]

you know the initial problem was that that didn't work right?

jumping in halfway through an issue isn't exactly helping

[faint pasture]

Well it should, I have a planet and moon and sun light system that is nothing but a set of stacked components being rolled around and it works hundred percent perfectly. If all you need to do is get a combination lock to spin, that will work.

[odd ember]

"should" and "does" aren't exactly helpful terms

[heavy ibex]

ok, yeah it worked. had to weed all the extra garbage I had out first. now i just gotta get it implemented with a timeline

[odd ember]

finally

[heavy ibex]

I can't explain why it doesn't work. It hits 90 degrees and starts going backwards

[odd ember]

well what matters is that you have a solution

and I'm pretty sure that node has a quat on the inside

which is why it works

[faint pasture]

@heavy ibex either re-import your mash or use a seam component to allow you to use yaw car to rotate those and it'll loop around just fine. Pitch and roll have limits, yaw does not

[odd ember]

FRotator UKismetMathLibrary::RotatorFromAxisAndAngle(FVector Axis, float Angle)
{
    FVector SafeAxis = Axis.GetSafeNormal(); // Make sure axis is unit length
    return FQuat(SafeAxis, FMath::DegreesToRadians(Angle)).Rotator();
}```

boom

QED

[maiden wadi]

Personally, timeline feels bad for this. I'd just put this thing on tick. You have 10 sides. 36 degrees per side. Your input picks a number. Tick solves interpolating from current rotation to number selected * 36

[odd ember]

it's solved, let it be

[faint pasture]

You don't need to bust out quaternions to spin a scene component. That's like trying to drive a nail with a jackhammer.

[odd ember]

nobody is busting out anything. this is a node that handles quats on the inside

and quats are the defacto best way of getting stable rotation

so I don't know what you're even arguing?

"don't use this node, it's too good"

or alternatively, is your point "EULER MUST WORK"

[spark steppe]

ah the smart people are around... guys how to mirror an rotator axis?

[heavy ibex]

🎉

[spark steppe]

from right handed rotator (y right) to left handed rotator (y left)

x forward on both, so no 180° yaw turn

[faint pasture]

Negate yaw?

[odd ember]

just as an addition, you can use AddWorldRotation to avoid combining rotators. if you want.

[spark steppe]

hmm, sure? Haven't tried much yet as i'm recompiling engine atm

[hallow helm]

Yes please do if you get the chance. I am feeling like this shouldn't be happening. I've never messed with splines though until recently.

[hallow helm]

Noted.!

[maiden wadi]

Axis is a vector. Multiply it by -1.f

[heavy ibex]

I don't trust that in combination with a timeline. I don't think I can count on a specific number of ticks

[grave relic]

@maiden wadi Managed to do it, now i can align with normals thx for the help. Still a bit wonky but its getting there

[odd ember]

fair enough, no worries

[faint pasture]

@heavy ibex make it stateful. Have some internal State representing the number displayed on each wheel and then convert from that to your rotation. And you probably want to use set rotation, not add, depending on if you're going to have things spinning a whole ton.

[odd ember]

he is using set lol

have you even looked at the setup

[heavy ibex]

Yeah I am tracking the number and will use it, for now I'm just trying to get it functional

[modern musk]

Does anyone know if it's possible to dynamically set the radius of a navigation invoker?

[faint pasture]

As long as your target rotation is always correct whenever you press one of the buttons, you should be fine. It shouldn't bust if you press the buttons faster than the timeline can play, etc.

[faint pasture]

Typically standalone is much faster but dunno if its just less overhead from editor or bps are faster.

[ashen night]

i'm looking for a reliable method to determine if an object can be seen in the frame

[heavy ibex]

Have you tried "WasComponentRecentlyRendered"?

[ashen night]

nice, didn't know about that one

atm i was projecting bounding box points to screen and checking if within screen size

which is ok for if the object is not in the frame, not if it's fully occluded by another object

[modern musk]

I think you could do a couple things, you could do several line traces from the camera or you could use "WasRecentlyRendered" like mentioned above.

I was having a problem creating a reliable Marquee Selection system for my project due to a free moving camera and ended up going with a normalized dot product which has worked well so far.

[heavy ibex]

I'm not certain on the behavior of WasRecentlyRendered, I've never actually tried to use it, just know it exists.

[trim matrix]

yo any vectorheads here?

[ashen night]

I'll test WasActorRecentlyRendered if it's better then my current version (which checks if not in frustrum THIS frame basically)

line traces can hit pillars/fences and object can still be seen between them

only method i can think of is stencil masks and reading back the pixels

which is probably too prohibitive

maybe multi box trace and checking every object along the line if it fully occludes and adding up occlusion bounds

nevermind.. WasActorRecentlyRendered works if occluded by another actor

[modern musk]

Nice!

[ashen night]

thanks everyone 🙂

hm.. in unlit it works that way .. hm

[odd ember]

it can render things off screen, it doesn't handle transparency very well especially

best way is trace

[dapper ore]

Hey so I made it so that I can move my camera around my 3rd person character while I hold right click. I did it by enabling "Use pawn control Rotation" under "camera settings" on my "Springarm" and some blueprint coding, But in doing so it ignores my default camera position. Is there a way to setup the default camera without running a startup line in a blueprint to manually set the camera to where i want it?

[ashen night]

player can still see, even though traces all hit

i'm running into these situations

[icy dragon]

Make the eye closed. They can't see anything.

[ashen night]

lol

[modern musk]

I think your solution will depend on how accurate it needs to be. You should be able to figure out what your comfortable with the smallest see through gap being, and then setting up a line trace function that keeps the line traces at that distance from each other. For instance, if your perception is 180 degrees, then figure out how small of a gap is acceptable to ignore and send out a line trace at each degree (it could be every 1 degree if needed).

Alternatively, you could also try the AI perception component?

You could also try doing it by calculating some angles. For instance, line trace from the center of the camera to the object in question, and if that line trace hits an object then get the hit object's bounds and check the angle between the relevant side's bound and the camera center and see if that is greater or less than the angle between the center of the camera and the object?

[odd ember]

not really. control rotation means that the player controller now controls the camera

[floral carbon]

Hi i'm working on a project and i have an idea to implement something would increase/decrease the game speed, I should have probably thought about that earlier because it seems a bit difficult to add this now. I think i have to change the tick interval and change somes float used to delay all of my BP... I don't really know what is the best way to achieve it,
if i have to call an event to every BP or store the game speed somewhere every BP can easily access and adapt the speed based on that. However, if you know any other ways I could do it, please let me know.

[dawn gazelle]

Is everything supposed to be slower, including the player?

[floral carbon]

Everything expect the player

[dawn gazelle]

I was thinking time dilation but that also slows down the player...

[worthy frost]

that is tricky

you could increase the players time dilation multiplier

and all its components

[tiny lynx]

hey guys, ive been trying to get my audio working all in a sound class and I have it set to a slider. I am using SetSoundMixClassOverride and I had it working at one point but for some reason now it is not working. Is there a way to call GetSoundMixClass or something like that? I am having trouble debugging it all

[worthy frost]

    UPROPERTY(BlueprintReadWrite, AdvancedDisplay, Category=Actor)
    float CustomTimeDilation;```

[keen prairie]

i'm trying to get an object to move up and down, starting at it's current location in the level, but it just flies into the sky infinitely rather than come back down. what am i doing wrong?

[worthy frost]

ofc it would

you need to do more than just SetActorLocation @keen prairie

[keen prairie]

i mean, it does move tho lol

[ashen night]

use relative or store starting position and add to that

[floral carbon]

Thanks you for your answers i will try it @worthy frost @dawn gazelle

[dawn gazelle]

It's because you're constantly adding the current height.

[worthy frost]

i prefer to lerp with an alpha

but that would not work for the lower curve...

@keen prairie store the original location before you start the time line

then you can just do OriginalLocation + that float

or just store the original location Z

[keen prairie]

how do i do that? sorry, it's been many years since i've used ue @worthy frost

[ashen night]

on begin play get world location and store it in a variable

then use that variable in your +

[worthy frost]

http://thegames.dev/snaps/UE4Editor-Win64-DebugGame_PCpJIwckhB.png

[keen prairie]

it doesn't seem to move at all now. thank you tho

[worthy frost]

well you are only moving a small amount

like 9 units

[keen prairie]

i changed it to 100 and no change unfortunately

okay, i'm really stupid lmao

i missed something obvious. that's my bad. thank you very much for your help

[worthy frost]

is it working?

what was it

[modern musk]

You could likely use a get all actors of X (e.g., class, with tag, etc.) and then do a "For Each" loop to "Set Custom Time Dilation" on all the actors you want to be effected (you could reduce the number of actors you were sorting through by only getting all the actors in a certain radius near the player).

[keen prairie]

i had unplugged the timeline from the setWorldLocation by accident 😅

[worthy frost]

lol ok 😛

[tiny lynx]

anybody know more about how to debug a sound mix? first time really working with these. Im trying to use a sound class to have my background music and a separate sound class for my sfx. wondering if theres any way to "get" the sound mix current settings

[faint pasture]

Every tick you are adding to world location. Do a direct set NOT based on current. Cache current at begin play or something.

[keen prairie]

i don't really understand what you're saying. i'm very new to this side of game development

I understand you're saying using every tick is inefficient but i don't know how to cache this information

[spark steppe]

hit me if i'm wrong, but that should make an nice hop with that float curve

if you add 10 at some point, and add -10 later, you end up at 0

the real problem may be that the change accumulates, so your highest offset isn't 10, but the sum of all positive values

[keen prairie]

i'm sorry, what? 😂

[tawdry surge]

@keen prairie he's saying you need to set world location as a variable

[keen prairie]

ohh, thank you! yeah, i've done this now

[tawdry surge]

Getting it with the function every frame is moving the start point

[keen prairie]

this seems to work great now

thanks to KaosSpectrum

[faint pasture]

Do
Position = OriginalPosition + TimelineOutput
Not
Position = CurrentPosition + TimelineOutput

Lol beat me to it

[keen prairie]

Yoss, I have learnt my lesson, for sure

😂

quick slap on the wrist

[winged sentinel]

how can I define a playable area on my map? I want to be able to spawn in enemies on my map in a playable space that I designate
I was thinking of placing multile bps with collison boxes but its not really perfect
Because I want to also get linear progress of the player like the percentage of level completed

[brazen merlin]

playable area sounds like you need a nav mesh volume. Not sure if linear progress is related, this a 2d game?

[odd ember]

yeah the first is solvable by navmesh

percentage of the level completed isn't really. but if it were, it would also be through navmesh

maybe if you do some markup entities for level start and end, then path to them from player position (not too often) and compare ((PlayerPosition - LevelStart) + (PlayerPosition - LevelEnd)) / (LevelEnd - LevelStart)

[winged sentinel]

by progress i mean in a 3d space where theres a start to my level and an end. But I want to get how far (percentage) a player is through it

[brazen merlin]

is this sometihng you constantly need to know or do you check it based on some condition? for example, the end of the level

[winged sentinel]

constantly, or at least somewhat frequent, as ill be spawning in items and changing difficulty based off of progress

[brazen merlin]

has the formula regardless

[winged sentinel]

hmm interesting

[brazen merlin]

you say "Far" so distance check, ie what EFoolType put makes the most sense

[odd ember]

constantly isn't really feasible

[silk cosmos]

I have this interface event set up in an object. The event requires the use of a variable, which is set to be different for each child class of that object. However, when I call the interface event, the variable is read as the value that is set in the parent. What am i doing wrong here?

[winged sentinel]

understood, it doesnt necessarly have to be constant but some what frequent as my AI director will rely on it

[brazen merlin]

tick is as constant as can be

[winged sentinel]

I like the idea of the makup entity

[odd ember]

tick won't help here

[winged sentinel]

Yes true but tick will kill perf

[odd ember]

path generation on navmesh has to be handled async

or it would block the game

[brazen merlin]

honestly just thought it would be a measurement from where the player started to their current location

sounds like you want to track their movement regardless

as in "steps"

[odd ember]

that would imply that each level is a straight line

[winged sentinel]

i think by linear i meant a linear play style not exactly in a straight line

[odd ember]

pathing allows for flexible level structure

[winged sentinel]

like a start and end to my level

[odd ember]

yeah I'm just explaining why you can't just trace a straight line

[winged sentinel]

this might be what im looking for

ahhh

i see

[odd ember]

navmesh is flexible for this, but queries are expensive and take long

there's also a potential for them to return with no path found

[brazen merlin]

odd idea, but would it be possible to update the distance traveled on each step of the foot?

does that sounds appropraite?

[odd ember]

that's too frequent

genuinely we're looking at several seconds apart at best

[brazen merlin]

no nav check, just a distance check from last pos

[winged sentinel]

i can do several seconds that should be okay

[odd ember]

how do you measure the endpoint?

if you measure per footstep

[brazen merlin]

the check would happen on foot contact with floor

that could be setup with anim notifies

[odd ember]

you only know your path from start. you may be sidetracking

[brazen merlin]

probably, def not thinking of using the navmesh to do this

[odd ember]

no I think you misunderstand

navmesh is the only way of doing this

barring some custom system that requires markup per level

[winged sentinel]

basically i think because the navmesh is flexible to "bend" the level doesnt have to be in one stright line

[odd ember]

yes

and it accounts for any amount of sidetracking

[winged sentinel]

meaning i can track my progress based off of where i am in the nav mesh

[brazen merlin]

hey that sounds cool

[winged sentinel]

But i might have an idea idk if this will work

what about a spline?

[odd ember]

sure but that's markup. and what if you have areas that are to the side of the spline?

[winged sentinel]

well theyll just be side areas, theyll have to exit them to get to back to the main objective

[odd ember]

you could maybe do something like a really wide spline, but then that limits how the levels can be designed

[winged sentinel]

only thing i can think of that would trip it is if there were multiple pathways

[odd ember]

yeah you'd have to account for those as well

easiest thing by far would be to find a different metric to measure progress by

[winged sentinel]

as in?

[odd ember]

idk what kind of elements you have in your game

[winged sentinel]

ah i see

[odd ember]

if you have AI, maybe it's per amount of AI killed

[winged sentinel]

come up with my own system

[odd ember]

per amount of objects picked up

per amount of objectives completed

etc.

if you want your camera to be on your controller, remove pawn cameras and use the player camera manager class

although it's a bit wonky to work with

[winged sentinel]

thanks for your help

@brazen merlin Thank you too

[odd ember]

it has a built in method that seems incomplete at best, and no logic otherwise. it's very much DIY

sure you can store transforms

and see if that works

[brazen merlin]

for third person, it'd be through the swing arm

[odd ember]

you can get it off the camera itself

[brazen merlin]

in reading what you are trying to go for, it sounds like each character exists in the world. The controller simply possesses a pawn, so each pawn can have a camera, upon possession it would swap that camera

[odd ember]

I think that's the issue

that the cameras screw when you swap between them

[brazen merlin]

ahhh

from a non technical mindset, i would do a fade in/out

fade to black on one camera, switch to the other, the other fades in

camera manager is the culprit though, it's just awful to work with

unfortunately not with cameras... Set view blend is the only node I can think of that handles camera blending, though i dont think it helps here

[odd ember]

camera is something that is not usually easy to fix

you could try SetViewTargetWithBlend on possess to see if it smoothens it out

[light token]

Hello. I'm getting crazy. It's just this blueprint and I can't get why it is doing this. I need somebody out of my tunnel vision to take a look. It's driving me nuts :/

[dawn gazelle]

What's your tolerance set to?

[light token]

2500

[dawn gazelle]

That function is constantly returning false?

[light token]

yes

it was working before

I didn't even change a thing. I just adjusted the landscape to have more islands

after that it started doing this

[dawn gazelle]

Mebbe do a breakpoint and see what the values are in those vectors?

[light token]

yeah that's a good idea

going to do that

but first im going to restart UE4

maybe it's a bug

thanks

Lol

it was a bug

the waypoint reached tolerance is 0

I have to recreate the variable

thanks for the advice

[dense citrus]

hi, quick question, i'm trying to make my own enemy, using a list of ifs, the enemy using a pawn blueprint as a base (there's a reason for this i don't wanna get into rn) and i was wondering how i could get the players location if it's overlapping a box collision owned by the enemy?

[odd ember]

if the enemy owns the box, sure

[bright harbor]

weird question, how would one go about making a wall or other object, that only a certain character can walk through?

that's where i was going wrong, thank you so much, i was making trace channels

[dense citrus]

they do, the idea is basically they're a sorta teleporting beartrap to vaguely think about it

and do you know how that's possible?

[mystic bough]

no problem 🙂

[bright harbor]

so wait, on the character and the wall do i just set the collision channel to overlap?

[mystic bough]

so make a new collision channel with default block response

give your wall this collision channel. the actor you want to be able to walk through the wall would have ignore for this channel

[bright harbor]

ohhh i see it now, sorry for being so oblivious, and thank you for your help

[mystic bough]

absolutely no problem, glad I could help.

[odd ember]

I don't know what you mean by a teleporting bear trap. but once the player collides with your box it's pretty simple to make them talk

[mystic bough]

everyone starts somewhere, don't feel bad for asking questions.. I'm pretty far along and completely oblivious on a lot of subjects in ue still

[bright harbor]

i'm pretty far along, been doing game dev for a long while, but i still find myself asking stupid questions lol

[dense citrus]

how so? i can imagine how to make them talk, but how do i get that initial handshake to happen?

[mystic bough]

yea lol same here. can't learn parts of unreal I haven't had the experience to deal with yet.

[bright harbor]

random question, but you wouldn't happen to know anywhere good to find playtesters, would you?

[odd ember]

there are events for this OnComponentBeginOverlap

[mystic bough]

it depends on what you need. reddit is a good place on a few subs I can check later if you'd like, but it's hard to give recommendations because I don't know them personally and do not want to set you up with someone who could potentially leak things/cause problems.

[dense citrus]

yee, i'm using that, my main issue is, doesn't there need to be some horta handshake to establish who's talking to who?

[bright harbor]

reddit has never been my strong suit, i'm mainly looking around on discord or whatever because i don't like social media that much

[mystic bough]

If you're comfortable with it, I would recommend looking at reddit.com/r/playtesters or reddit.com/r/playmygame
I've heard positive things about them.

outside of that, I'd do what you're doing, try to find similar games and ask around on discord

[bright harbor]

aight, thanks!

[frosty berry]

I am doing a terrain landscape and with blueprints and have done the LandscapeLayerBlend so I can paint if need be. I would also like to use the WorldAlignBlend to set textures based on height (sandy beaches, snow topped peaks, etc and hard slopes with rock. Can you mix the two blends and how?

[odd ember]

they both talk to each other. whoever has that event in their graph is the one that you want to do something with the info

[chrome eagle]

https://prnt.sc/1zv1xkt https://prnt.sc/1zv2549
I have like a vault door setup where I want to press F to open the doors. Each should be moving apart from eachother when you hit F but no matter what I do it doesn't react. Anyone know why?

[trim matrix]

any smart vectorheads?

[chrome eagle]

No clue what that is ♥

[trim matrix]

been struggling with this problem all day

i have a free rolling physics object say a head, and I want it to spawn decal always when it hits a wall, floor etc. so far I can only correctly spawn decal on floor or floor+ either left or right wall

how can i align it so it will go always correct face where it hits

im spawning it from a bp

[brazen merlin]

on the hit result, can't you get the normal?

[trim matrix]

yes tried that

not working

atleast if i do that some more maths to even have it just work on one wall and floor

[brazen merlin]

not working as in it doesn't spawn it? wrong rotation? what not work?

[trim matrix]

well normally you get normal decal when correct rotation

when it dont work it just shows this barcode like thing

like the rotation of decal placement is wrong

[brazen merlin]

right, it projects and smears the pixels

sounds like wrong rotation, are you getting forward vector or up vector?

[mystic mist]

Hey all, looking for a blueprint node that resets the position of my ball when I click on a switch. Does anyone know what that would be called?

[trim matrix]

xD make a variable of your current ball location of the start.

then on left mouse click set actor location and and insert your variable there

[brazen merlin]

it would be set position, but yeah, you need to set a variable on begin play

[trim matrix]

@brazen merlin im getting from event hit set location from hit location

rotation ive tried rotation from xv vector

tried negating also

[brazen merlin]

if the get normal method doesn't work, what about getting the direction of travel the "head" has

[trim matrix]

yeah dunno about that im dismembering a head

so it can go in a an angle

[mystic mist]

Like this?

[trim matrix]

if u want your ball start loc be 0 0 0 then yes

but

[mystic mist]

(ive got some other commands to run thus the sequence lolz)

[trim matrix]

get actor fro begin play

i recmmend

and save that as a variable

so you dont have to always get that when clicking

[mystic mist]

oh I see

[brazen merlin]

yeah sorry, id check into this more, but dont have the time tonight

[trim matrix]

thank you though :p

The scale on the player controller for pitch being a negative value is actually evil. Is there a reason by default it's set to this? Or is it that the person who designed it to be like this for so many years is one of "those".

u wot m8?

[mystic mist]

got it

ok one more question

so it returns to its target location, but its still moving from the previous action

how would I get it to stop completely?

[brazen merlin]

the ball is pathing right? using navmesh?

[mystic mist]

no, its physics.

[brazen merlin]

ah

is sweep true?

[mystic mist]

no. I can set it though, nothing changes, so far as I can tell (if its true or false)

[brazen merlin]

should be a combination of those two, maybe sweep on and teleport off

[chrome eagle]

ok I copy/pasted code from 1 door to the next. Door 1 works exactly as expected and door 2 is not even registering that I'm hitting the key to open the door. (I checked and neitehr have "consume input" on the input event)

Any thoughts? x.x

[brazen merlin]

sorry, didn't follow the first post, still don't follow now

[chrome eagle]

so I've been breaking connections backwords trying to find where the break in the bp is.. at the moment both doors show/hide the text ""F" to open".. The 2nd part of their BP I've shortened so now all pressing F does is remove the text.

both doors have (from what I can tell) the exact same nodes (I copy and pasted them, replaced variables) Door 1 works perfectly fine. The new door doesn’t

[tight schooner]

@chrome eagle can you show your current graph?

[flat raft]

you have to tell the character which door is currently the focus

[brazen merlin]

really tough to say, you've got two doors, setup in a way i have no idea over, one plays but the other doesnt in a timeline i have no clue how it works

[flat raft]

i assume you have a box collision

[chrome eagle]

They have their own box collision. Nodes simply say that if player begins overlap the box then that door is capable of being opened.

https://prnt.sc/1zvabhj
https://prnt.sc/1zvae94

The top code is just if player is overlapping collision box, show text "f" to open and make the door openable. and if player leaves collision box, hide text and door is not openable.

Bottom text has been remove from the rest of the nodes so all it does it remove the "f" to open text.

orginal door does exactly that. This door doesn’t seem to register that I'm pressing F at all, though the text is working so collsiion box is working

[brazen merlin]

alright so now where is the door open code again? and what is inside the timeline?

[chrome eagle]

I've disconnected the door open code, as well as the timeline to open said door.

At this moment all this door should do is hide the text.

[flat raft]

https://youtu.be/EmvekeKk-0o

Unreal has a very simple tut on this. Follow that, as it might be more visual of an explanation

[chrome eagle]

I mean my code works... as I setup my first door just fine.

[mystic mist]

alright for anyone wondering if I got the ball to work, I did. There may be a simpler solution but this is what I did.

[brazen merlin]

the only thing different, i imagine, is the timeline since one is for left and other for right

[chrome eagle]

My guy, there is no time line I dunno what you're looking at o.o

[brazen merlin]

? did you disable physics?

[brazen merlin]

looking at this post by you of the timeline

[chrome eagle]

The orginal post? of the nodes I've stated a few times I've disconnected? x.x

[brazen merlin]

ah spawned a new one

[brazen merlin]

yeh, because now you say all you got is the text turning off and on

[chrome eagle]

Correct. That's all I want them to do right now.

[brazen merlin]

great, glad to help?

[flat raft]

@chrome eagle ok i'll do a test on my pc. basically, you have 2 collision and when you press F the text appears?

[chrome eagle]

no o.o am I not explaining this correctly?

The door has 1 collision box. When you overlpap the text appears and the door becomes openable.

When you leave overlap, the text goes away.

While overlaped a boolean variable says that it can be opened. (Can Open door? V)

on 2nd picture, that vairable is pluged into a branch along with the input F.

Pressing F marks the door as openable just so the text will not reappear

[brazen merlin]

i guess ive been confused, i thought you wanted the doors to open, has it been about this F text the whole time? That it's not appearing on the other door? no sarcasm intended, genuinely id like to help

[chrome eagle]

You're fine. The ORGINAL problem was yes my door wasn’t opening, but as no one responded to me I troubleshooted on my own and removed all the actual door opening mechanics and found the 2nd door stright up isnt registering when I press F.

The text appearing, and disappearing based on if you're inside the collision bxo or not is working perfectly.

I can steam it in a VC if it'd make it easier?

[brazen merlin]

i get it now

[chrome eagle]

yea ignore the first text as the nodes are all different lol

[brazen merlin]

well forgive the redundancy. the vault collision, that's on one of the doors?

so it's a bp and you have two of these doors?

or are the doors two components part of the same bp?

[chrome eagle]

There are 2 different BP.

[brazen merlin]

ok, so there's these two doors then, and overlapping one works but not the other

[chrome eagle]

ima send full BP in hopes to clear things up.

[brazen merlin]

can i see what they look like in level?

if the bp works for one, then im thinking its not bp