blueprint

[white lynx]

ofc if you were writing this in C++, you can make Tick a much heavier function

one of the issues with Blueprints is that all their nodes get re evalulated every tick

regardless of whether they actually run their functionality

[fading wren]

so using timeline for rotation is only with tick ?

[white lynx]

I don't think I understand that sentence. Rephrase?

[fading wren]

using timeline to rotate, will work onmly with Event Tick

[white lynx]

if you're setting any values after CDO has been defined, there's not much I can do there 🤷

Timelines as in the fancy (play/pause/etc) Node are actually components

[fading wren]

ok, how to not use a tick to rotate character using Timeline ?

[white lynx]

you will have to spawn an instance, get its value, and if you're not using the value anymore after fetching that element, you'll have to destroy it right after

which, for smth as simple as what you're after, I suggested doing it inside the Tick function directly (@ Plex)

[white lynx]

oh god no

not that

[fading wren]

what ?

[white lynx]

Input Events run every tick

[white lynx]

even if you're not pressing it, it will still run with input value = 0

So that code right there is trying to play that timeline every tick

[fading wren]

ok, so i dont need use InputAxis to rotate character by timeline ?

[ripe tiger]

axis mappings vs action mappings

[white lynx]

(and almost every tutorial that does setting up a character in blueprint shows how to do this)

[fading wren]

ok, how to use it properly?

[fleet cedar]

Does the "overlapped component" in a component overlap refer to the Box Collider (or whatever it is), or the component of the other actor that specifically overlapped?

[fading wren]

it use a timeline to rotate ?

do we talking about rotation a character ? not like how to use animation of character rotation ?

this is from thrid person character example

i asked how to use a timeline properly, you said check third person example ?

[fleet cedar]

It's the box!

[ripe tiger]

timelines are used to smoothly transition between two separate individual states. Like crouched or not crouches. Things that go with action mappings.

[fading wren]

so if i understand correctly, i should not use timeline to rotate a character ?

there is only one correct way - input axis ?

but if i dont use constant values, since player control a character ?

[ripe tiger]

theoretically if you wanted to have a limited number of directions to move in like a grid movement system, it could work. but not for an axis mapping.

[fading wren]

i want to modify rotation. i need heavy/long rotation and make it more easy/light/quick if player still rotate more then 0.5 second. Timeline usable here ? spirng arm and desire rotation is not what i searching for

is it possible to do in blueprints?

or it possible only in CPP

if c++ only i will just forget about it

[orchid garden]

basically you want the rotation speed to increase depending on how long they are rotating for

[fading wren]

YES 🙂

[fading wren]

do yu know how to do it ?

[ripe tiger]

Global delta time perhaps

[orchid garden]

^^ then increase rotational amount based of key held time

[fading wren]

what node can track time of rotation ?

[ripe tiger]

can you Rinterp to maybe?

[fading wren]

sorry, what does it mean ?

[fading wren]

i am not using key to rotate i am using Axis Value in Input Axus Turn

[orchid garden]

basically same thing

[fading wren]

you mean increment ?

[fading wren]

how to track time of using axis value ?

[ripe tiger]

float + float, increment only increases by 1 and I think is for integers

[fading wren]

you mean variable speed = speed + 1 ? whilee Axis input != 0 ?

[orchid garden]

i'd grab a little routine but i just opened a learning project and its compiling shaders... probably a video with it, but you'd basically be using the same routine as a 'key held' to count the time for time passed.

[fading wren]

i should google it 🙂

[orchid garden]

this might of just gave me a idea on how to resolve one of my problems 🙂

[fading wren]

routine is special term ?

[orchid garden]

well routine/custom function.

i have a little custom function wrote up in my project that counts time a buttons held, if they tap/double tap the key.

i think @maiden wadi helped me optomize it if i remember right.

but for key held and axis rotation, you could easily change it, so that if the value is out of 0 with x tollerance, it counts rotation time.

[maiden wadi]

Sounds like a clamped increasing float based on key time held.

[orchid garden]

yeah it was awhile ago @maiden wadi that sound right though.

[fading wren]

if AxisValue != 0 then variable time of rotation = deltatime * ?

what does it mean factor ?

i was trying to find a time of rotation

am i doing it correct ?

[maiden wadi]

Damn blueprint feels awkward after working in C++ for a while.

But this, then use the multiplier to scale the rotation.

[fading wren]

ok, but i will decrease a vaule of Time_of_speed variable. if i understan correctly, for example 2*0.1 = 0.2. But we ok with that, since we just need to check if it differs from global delta second ?

[fading wren]

thanks for that example, could you tell me why you multiply to Get World delta seconds ?

why add Multiplier not enought ?

[maiden wadi]

Mathematically speaking. If your player is running at 120FPS, you need things to increment at smaller spaces than a player running at 60fps. Player at 120 FPS will have 120 iterations of MoveFoward per second. A player at 60FPS will have 60. If you don't multiply by delta, the player at 120FPS will spin faster quicker than the player at 60FPS.

[fading wren]

ahhh

ok

understood

thanks 🙂

so player with 120 fps will have smaller amount in Get delta second, thats why Input axis will multiply by smaller amount

[maiden wadi]

Delta is nothing more than the time between frames drawn to screen. So 120fps delta is 1/120 = 0.0083, 60FPS delta is 1/60 = 0.0166. So multiplying by this will cause things to happen at smaller increments for the 120FPS player, because they update twice as often.

[fading wren]

yeah, means i understood everything correctly now 🙂 i write it above 🙂 great, a lot of thanks for help 🙂

i think my additional problem was, to understand that branch that using every tick - will not kill a performance

so ones again, do i understand correctly, if i use one branch, without heave performance calculation in it - it will NOT kill performance. it is acceptable?

[maiden wadi]

When you find out that the game's viewport is set up to have it's size calculated every tick, you really stop worrying about performance.

[fading wren]

nice, thanks for that example

[maiden wadi]

To some extent. I still stand by the "Just make it work, then optimize." You learn more that way. Specially when you hit the profiling wall and have to learn that.

[fading wren]

sounds like something scary

[orchid garden]

@maiden wadi how about rotating the character slower then the camera? i.e. camera does a 360 but it takes x seconds for the actor to catch up to the camera?

i.e. the default 3rd person mannequin will instantly turn whichever way the mouse moves, rather then slowly turning to match the camera

😐

[fading wren]

@trim matrix @maiden wadi really thanks for help 🙂 also thaks for other person, that asked not tag nickname

[orchid garden]

"keep poking around till you break something else, you'll find out how some day"

guess throwing a wrench at at 5 year old and telling them to rebuild a engine is 'learning how'...

forget i even asked.

[white lynx]

LurkingFromTheShadows.exe

Tagging me is fine; just don't overdo it 👍

Sorry I left early the dog made a mess in the kitchen.

Glad that you solved your thingy!

[white lynx]

I guess that depends on how you learn

Some people do learn the best by just trying to break stuff

[maiden wadi]

@orchid garden I'm not entirely certain, but I think you can just check UsePawnControlRotation and uncheck the Inherits under it in the spring arm. Then just set UseControllerDesiredRotation to true, and set the setting you want in the MovementComponent.

[orchid garden]

some things thats fine, others not so much.

[white lynx]

<@&213101288538374145>

(yay I won)

[fiery escarp]

They've been banned. Thanks for the heads up. I'll clean up any remaining messages.

[white lynx]

I was this close to winning Cs go skins for free

[fading wren]

Btw what is quick way to check what influence to performance make modifying in my blueprint ?

[loud badge]

Hello everyone,
I have a question regarding world composition and level streaming, is someone available to give me a hand please? Been searching a lot couldn't find an answer yet, maybe someone here knows about it, thanks in advance!

[trim matrix]

Is there a way to modify material mask in runtime?

[white lynx]

if you're talking about changing the texture sample, yeah just make that texture a texture param and modify it

[celest oar]

is there a way to use animation notifies in the character BP?

[white lynx]

if you're talking about changing the texture itself, only with c++

[white lynx]

Hehe... don't ask if you can ask . If someone is around with knowledge on it, they might answer. If no one does, you can always just ask it again at a later time

[orchid garden]

anyone know a decent program for splicing maps for world composition?

height maps that is...

[trim matrix]

No I want to modify texture realtime

[white lynx]

Right...

So you're saying that say you have a Wall Texture... you want your material to have a different texture

or you want to change the wall texture's pixels

[orchid garden]

i think they mean they want to 'edit' the texture i.e. draw on it, real time

[white lynx]

if it's changing pixels, you can't do that with Blueprints

Well you caaaaan... sort of... but it's way easier to do it with C++

(And doing it in c++ is actually pretty hard if you don't understand what's going on)

[loud badge]

basically I am trying to persist actor after streaming level out and then streaming level in.
I have a cube which spawns in the air and then (have physics enabled) it drops in the ground.
If i get out of the level and then enter the level again i see the cube spawning in the air again.
So how I can i see it on the ground next time?

[white lynx]

that depends on how you load the streaming level

iirc correctly Load Stream Level has some "absolute" or smth like that

as a parameter

which dictates whether you want to load the streaming level as a new instance

or as an existing instance

[loud badge]

yes i am using world composition with stream distance, so i guess i dont have control on that?

[white lynx]

That's not what I meant

[loud badge]

yes i know what u meant, using the blueprint node (load stream level with the flag), but I dont manually open the levels

thats my issue

[white lynx]

wdym you don't manually open the levels

if you're using the blueprint node

😐

if you're using the UGameplayStatics function, you are manually loading them

[loud badge]

i dont open any level, world composition takes care of that

[white lynx]

oh; are you on ue5?

[loud badge]

no, ue4 🙂

[white lynx]

Hmmm. you're using this to handle loading in and out?

[loud badge]

yes basically

[white lynx]

I see. Can't really say, then. I usually make my own loading in and out systems for levels so that I do have control over how levels get loaded.

[loud badge]

ok great thank you, will continue investigating

[white lynx]

You can try to look at the source code for more info & details on how they do stuff

[brazen acorn]

question: so apparently in the old UE4 you could just do like event tick and it'd jump to the existing event created

which still works but apparently input actions you can just create as many as you want?

[trim matrix]

Anyone know why this would be happening the Turret points almost at player but not fully

Thats the code

I have the Turret Top Comp getting the relative Rot and world location matching with Enemy Tar Player location for look at rotation

then interp to along with setting relative Rotation at end

??

[dark crow]

Uhmm, delay? (?)

[ripe tiger]

Is there like a setwidth node in blueprints to make it so I can set a textbox with a variable output to have that output always take up the same amount of space? So for example if I have a series of textboxes linked to different outputs they can all take up the same amount of space.

I found it. I was looking for a node when it is just a setting for text itself.

Which I should be able to set with a node, if I drag out from the reference.

[weary crown]

I'm setting up a system where people can extend the game by writing scripts in LUA. However I also want them to be able to add/replace the models, maps, materials etc. What would be the easiest way to set it up to allow for those custom assets to be included alongside the lua scripts? Not really sure where to put this tbh, but majority of the core game systems are BP so figure it would be something in there.

[icy dragon]

In theory, you could assemble runtime mesh importers (like Assimp libraries) or reading .uasset from external source.

[weary crown]

Is it possible to read in a uasset after the game was built?

[icy dragon]

Theoretically yes, but that would be up to C++ scripting.

[weary crown]

Hmm alright, I looked at the UGC stuff that unreal has, but since I am using LUA for mod scripting, I feel like it would be a bit strange with the blueprints and stuff that can be done through UGC.

Perfect system would be a way to create the assets, then be able to dump the assets and scripts into a folder which the game loads

[icy dragon]

Well, Soulcalibur 6 modders swapped models with (almost) homebrew means.

[candid blade]

anyone know why add child to wrap box doesn't work ingame but i can clearly populate it in the UI normally?

ingame vv

[fading wren]

Thanks :) is this a console command ?

[fading wren]

One more question, if i plan to release first game in the middle of next year, should i start to use UE5 ? I know it could be not stable right now, but will i get some benefits in future because of transition from ue4 to ue5? (I am not planning do even any builds this year )

[icy dragon]

Largely no practical benefits if you already got far enough in development within UE4.

Making use of UE5 new features would mean redoing many things from scratch again.

[fading wren]

I am only start. Made couple blueprints

I also can say, i am only start to learn blueprints

So, maybe i would like to learn more fresh software. I just have no idea how much unstable ue5!right now

[sudden nimbus]

if you are just starting to learn unreal, do not use ue5 yet

[fading wren]

I am start to learn blueprints, have experience with ue4 as 3d artist

[sudden nimbus]

it's not that blueprint in ue5 is different, but assuming you are building a project alone, you don't want to go to ue5 while you are still learning the fundamentals, at least not yet

[fading wren]

Ah ok

[sudden nimbus]

despite what the YouTubers seem to say by releasing tons of ue5 content, they are riding the hype wave

I have a good amount of all around ue4 experience and I'm carefully planning any transition to ue5

[fading wren]

Ok, got it

Thanks

:)

[sudden nimbus]

don't crosspost

[orchid garden]

UE 5 being early access release, i'd stick with UE 4 until UE 5 is out of early release and has had some major bug fixes first before transitioning to it. UE 4.25 -> UE 5.26 when it first came out was a good example of why not to jump right on a engine release right away.

[fiery glen]

it's kind of dishonest because every one of these videos would be identical in ue4

[gentle urchin]

Are you doiing this in a function library or something? Seeing how the print node asks for world context object.....

[stuck burrow]

Hello everyone.
I'm currently prototyping something on the action roguelike side (it's a topdown, say like a Diablo for the best idea), and I've never actually coded the combat. And I'm wondering what would be the best approach to check for hits (character -> enemy and vice vertsa). Is it a collider on a weapon and then just go with the animation and check for collisions normally when swinging it? Or maybe do a short sweep during the animation? Or is there anything else?

[fleet sinew]

Does anybody know what get function is this? I found the image solution for my problem but can't find what this is

oh

alright I think i found it thank you:)

[stuck burrow]

Thx mate, sounds good

[thin iris]

Just a quick ask about the UE5 valley of the Ancients project incase anyone knows how this works.

I am attempting to find what drives the sounds of the columns being destroyed. I have found that the SFX_Destruction_first and second are referenced in the level blueprint. I also have simulated the level and selected the column, which appears to be a Chaos Cache Manager asset driven by the Targetable Chaos Blueprint. So what i've gathered from the BP is that when the object is destroyed by the player is plays a sound which is driven by a variable. But I cannot see where that variable is set and does not appear to be obvious in the reference viewer of the BP. Any help would be greatly appreciated.
Here is a screenshot of the Targetable Chaos BP and the Play Sound event in question.
https://imgur.com/a/InhXPSY
Thanks!

[candid blade]

i ended up fixing it by just having a main HUD and add children to it

[lament ginkgo]

Might not be the right spot to ask, but I'm making a minimap using a Scene Capture Component. I added a sprite for a minimap icon, but while I've got it invisible to the owner of the actor, I can see the icon on every other actior in the main camera. Any way I can make them invisible to everything BUT the scene capture component?

[hoary orchid]

Is there a way to increase projectile speed over time?

[atomic salmon]

@hoary orchidif you are using a projectile which is simulating physics you can add a force to it, which will result in an acceleration and hence increasing speed over time.

[hoary orchid]

ahhh

awesome, I'll try that out

[hoary orchid]

Possible to Increase without using physics simulation?

as I am using projectile movement

[atomic salmon]

You can use projectile movement also with a projectile which is simulating physics.

If the projectile is not simulating physics I don't think you can alter its speed during gameplay as it is moved by the movement component directly. Unless it exposes a movement event you can plug into. Would need to check the source code.

[hoary orchid]

awesome worked, thanks alot man

[atomic salmon]

@hoary orchid Also check the homing option. That accelerates it toward the target (as long as the speed is < MaxSpeed)

[hoary orchid]

ahhh

[atomic salmon]

Plus it turns out I was wrong. You can set the velocity during gameplay with SetVelocityInLocalSpace(FVector NewVelocity);

[pliant tendon]

https://answers.unrealengine.com/questions/1043177/want-to-rotate-an-actor-on-its-local-z-axis-while.html

[hoary orchid]

Just change the value of Z

[still needle]

Hey guys! Anyone knows how to do to play a widget animation calling it in another blueprint?

[pliant tendon]

thats not how it works

that will rotate on world rotation

[hoary orchid]

then what do u want?

[still needle]

sorry to interrupt XD, you can answer me later

[hoary orchid]

u need reference to widget that contains the animation

[pliant tendon]

it literally says it in the question

[wise raven]

is there no way we can add a delay inside a function?

[atomic salmon]

@pliant tendontypically you would use AddActorLocalRotation.

[pliant tendon]

and i explain why i dont want to use that in the question ;/

[atomic salmon]

@pliant tendonallright let me read your full question then.

[pliant tendon]

alright thanks bro

[thorn ermine]

Not the delay node, from inside a function no. But there are other ways you can cause, or make use of latency.
It depends on your use case, you could trigger a timer with a wait to call a function, that can raise an event for callback mechanism

you could write your own c++ delay and call it form bp
you could use time in blueprint and make your own delay function counting milliseconds for example too.

you could call an event and perform something in there, that calls another event when its done for callback

so quite a few options, but the std out of the box delay node, is only available in main graph

[atomic salmon]

@pliant tendonjust for clarification, are you using the standard Character Movement Component for your player? Or something custom made?

[pliant tendon]

standard

[quasi frost]

I am having an issue where my for each loop is populating things multiple times from an array of which there is only one thing in atm. So I am trying to populate my hand from cards from my deck, atm there is a single card in the deck array, but it is populating twice. Anything obvious that would cause this?

[left oracle]

anyone have a solution a weapon clipping on object?

[quasi frost]

@left oracle If you are talking about a gun clipping through a wall the way AAA games tend to do it is by changing animation when clipping would occur. You can do something similar by adding a collider and checking collision with walls and changing to a different idle animation which moves the gun up etc.

[atomic salmon]

@pliant tendonok because the Character Movement Component is designed to work (in general) with a vertical capsule. Did you follow any tutorials to implement a wall runner with it? Because there are different techniques and the answer may depend on which one you implemented. In general, if you want to locally rotate your character to match a specific direction, you can combine the rotator for the current control rotation with a rotator like (0, 0, Delta Z angle), then apply it back to the character.

[marsh crescent]

can someone help me with this

[pliant tendon]

i watched some tutorials, but i didnt copy anything from them

[atomic salmon]

@pliant tendon to get the Delta Z angle, you can use the ACOS of the dot product between the two forward vectors (representing the current and target directions). The result of the dot product will in radians, so you need to convert it to degrees before making a rotator our of it.

[pliant tendon]

sorry i dont understand what you quite mean

[left oracle]

oh ya one more question is ho wto disable a sprinting backwards?

[pliant tendon]

why would we combine the control rotation with some random rotator?

[pliant tendon]

add a branch that checks if your velocitys size is greater than 0

in your sprinting thing

[left oracle]

any solution?

[pliant tendon]

@left oracle

[heady marlin]

Hi guys, i have to manage keyboard input every few seconds to avoid multiple keyboard clicks. Anyone has an idea on how i can do it ? I try to use set timer by event with a delay of 0.25 but seems doesn't work well

[chilly jetty]

Hi there, is there a way for a line trace to detect a decal when it hits one?

[burnt nest]

I doubt that a decal has or even can have a collision of any sort for that to work.
So you would need to place a collision where a decal is where you want the line trace to consider it a hit, give that its own collision type and then check for that.

[atomic salmon]

@pliant tendontake the forward vector of your actor (character) and another vector which is the new direction it should be looking toward. Calculate the dot product between these two vector, then do an ACOS (deg) (arc cosine in degree) of the result. That is your delta angle between the current facing direction of your character and the desired facing direction. At this point you can Add that angle to the local rotation of your character so it will make it face the desired direction.

[pliant tendon]

oh i gotcha thanks ill give it a shot

[pliant tendon]

its just spinning in place xd

[atomic salmon]

@pliant tendonthat happens if you are orienting the character to a direction which, in turns, depends on its orientation. It is like a dog chasing its own tail...

[cold raft]

Lets say I have been building a game and adding lots of systems over time, so that EventTick is now getting "busy". Does adding a delay [shown] actually help reduce the time that code is called or am I kidding myself?

[pliant tendon]

youre kidding yourself xD

wait actually im not sure

[frail inlet]

mr paz?

hello there

[pliant tendon]

wait

where have i seen you before xD

[frail inlet]

yes im boba

gamedev.tv

:)

[pliant tendon]

i dont remember seeing you there

mustve been danis basement?

[frail inlet]

no

[pliant tendon]

ahhh now i remembered

gotcha gotcha

lol

[brazen pike]

would that not delay it the first time, but after that it wouldn't delay?

[atomic salmon]

@cold raft not really. If you have a portion of code that you would like to call less frequently you can use a Timer for it

[worthy tendon]

you are very good at commenting blocks of logic. just use that skill and put those logics into separate actors/components/events. don't put everything in a single tick event, you only have to think about where you should put those logics but it will be worth it.

[cold raft]

Damn - I did not realise the impact of my poor coding - I will learn how to use Timers instead of being lazy 🙂

Thanks all 🙂

[stuck fossil]

Good morning all, I got hung up all night trying to fix an AI navigation issue to realize I've got some actors with sphere collisions that are blocking my AI pawn from moving. Does anyone know if I need to change the collision preset or perhaps the navigation area class? I want the AI to move through it without stopping the sphere collision overlap/end overlaps for the player character. I feel like the answer is right in front of my face so I apologize if I'm asking a dumb question.

[worthy tendon]

do your spheres affect navigation area?

[stuck fossil]

They do currently but they shouldn't. They're just collision zones for triggers.

[worthy tendon]

check this option for your trigger

it should not be obstacle, set it to none

[stuck fossil]

Okay thank you! One sec, let me test it now

[brazen pike]

oh my god, I had been trying to work out why my fps had been tanking whenever my AI would chase the player and I think sphere collisions was my issue... was just about to ask what might be causing this

apparently a sphere collision that covers most of my map lowers fps to 6

crazy how someone solved my problem before I even asked it

[worthy tendon]

you can uncheck this one too

[stuck fossil]

It seems like they are still getting hung up even after changing the navigation class, I think that box might do the trick though let me try it real quick

seems like its still blocking my AI unfortunately. I thought for sure that'd do the trick.

I'm gunna mess around with it a bit more and see what I can come up with. I wonder if I have to reload my project or something

[worthy tendon]

press P in world and see if the green area is affected by your spheres or not. it should't be after you uncheck that option

[stuck fossil]

OH

Oh I just figured it out

I have a custom collision set for interactable* objects and I forgot to set it as world dynamic by default so its just been listed as block the whole time

I feel really dumb sorry lol

I had this feeling in the back of my head that it was because I did or didnt do something earlier on lol. Thank you for your help though!

[worthy tendon]

No worries 👍

[stuck fossil]

Yep just tested it out and that is absolutely what happened lol

If only you knew how long I spent last night trying to figure out what I did wrong. I cut and paste entire sections of my level to new levels and ran all kinds of tests... ugh lol

[worthy tendon]

I'm like you as well. I was always smarter after a good sleep! 😅

[spark steppe]

does anyone know what view/trace is used to determine which actor has the mouse focus? nvm, seems like my mouse is moving around in FPV

[gritty elm]

well, you can set tick interval value to desired value, so your tick interval will be changed, search for "Set tick interval"
the other solution is to use timer events, in timer events you specify the time that will trigger after specific seconds is given, for example 0.2, so it will run event after 0.2 seconds in loop, or any desired value

[spark steppe]

so my next question obviously is: is there a way to keep the mouse cursor centered for first person view?

[hallow moon]

Hey all, im probably considered a novice at blue print. I have create a Niagara FX for this crown. When I hit F I want it to appear then when I hit ctrl+f I want it to disappear. Similar to this gif. I would like to just use the one Niagara system which by default is spawning the crown on. I was thinking I could use Time Dilation maybe? The idea would be to activate the niagara system when I hit F then reverse the system when I hit ctrl+f. Any idea, tips, or tutorials to point me in the right direction?

https://cdn.discordapp.com/attachments/237430693053857792/871520523870421033/crown.gif

I have actually done it with a material but I'm controling the FX through niagara

Have I gone about this the wrong way?

[spark steppe]

well, the FX could be done in the material, too

think of a gradient which moves while you scale up your value which controls the visible area

[hallow moon]

Thanks Ben, ill re do my thinking and control my material instead

[chilly jetty]

hi there

[onyx violet]

I have some players with small monitors, 1024x768, and it seems to be crashing their game on startup, anyone know anything about this or how to fix?

[chilly jetty]

is there a way for me to get whether a sphere trace doesnt hit an actor so I can trigger a boolean?

[earnest tangle]

A specific actor or any actor? @chilly jetty

[chilly jetty]

specific

I have a projectile that will stick whatever it hits

I want the actor to appear when the sphere trace hits it but disappears when it doesnt

[earnest tangle]

well you could just compare the sphere trace's result and see if it hit the actor you wanted or not

[chilly jetty]

oh yeah

thats a good point

lmao sorry, thanks for the help

[earnest tangle]

no worries :)

[chilly jetty]

wait no sorry

i dont think that will work cause there will be several of those projectiles

and if the sphere trace isnt on the actor it won't it for that actor

[earnest tangle]

so you're running the trace to test if the projectile hits some actor or?

[chilly jetty]

wait that worked, I was overthinking it lmao

[earnest tangle]

heh

[onyx violet]

if I wanted to detect if a physics object is going to overlap with a hitbox, before it does, how would I do that?

I'm making a soccer game, and need to be able to calculate after every kick if the ball is on target to go into the net

[atomic salmon]

@onyx violet you can use a trace in the direction of motion. E.g. a Box Trace from the ball along its velocity vector.

Or a sphere trace given the shape of the ball.

If the trace hits the box guarding the net, it means the ball is traveling toward it and may get into it.

[hallow moon]

Hey @spark steppe thanks for setting me on the right path. Works perfectly!

[onyx violet]

ok ty for the info

[heady burrow]

literally unusable

[rain egret]

hey i have a question that i havent found any info on, i want to have my character rotate 360. i am using the control rotation to set the actor rotation and it works, however i am limited in an 180 arc instead of a 360.
how can i fix this?
id also like for the camera to behave according to the rotation, so when i pull the mouse down to look up it would look up from the players perspective

[heady burrow]

@rain egret rotating it 360 equals not rotating it at all

[rain egret]

man i am an idiot

so i figured it out

make a new playerctrl
make a new camera manager
set this camera manager in your playerctrl
change the max and min rotation of yaw pitch rot to -359.9 and 360

also set this playerctrl in your game mode

which still leaves me with the camera behaving incorrectly, hrmm

[heady burrow]

I think its a better idea to explain exactly what you are trying to accomplish.

[rain egret]

a plane game for example, you fly level and pull the stick up, the plane (camera) goes up
now imagine flying at a 90 degrees, if you pull the stick up the plane(camera) should go up in a sideways way

this is the best example i could think of to explain what i am trying to get

[slender idol]

Anyone else used sequencer for gameplay animations? Is it feasible?

[rain egret]

something like this

urgh, this should be a easy thing to fix

why is it so diffuclt

[late cave]

What happens when you have a bunch of sublevels and one actor does this?

Do you get all actors from all currently loaded levels?

[slender idol]

Do I have to create a new Level Sequence Player every time I want toplay a level sequence?

[late cave]

No, but I think you have to rewind "manually"... (been a few years since I last had to do it, but I remember that one wasn't super obvious)

[fleet cedar]

Be kind, please rewind.

Found a vhs

[compact raven]

Hey, I used an array to multiple buttons multiple times, but it only stacks the icons vertically. I was wanting it to stack horizontally then vertically while keeping my scroll bar? Can someone please help me?

[sweet coyote]

I am working on creating a blueprint for a door that use ui widget to enter a passcode to open the door when i place the widget into the level i get a warning. LogUObjectBase: Warning: Object is not registered LogUObjectArray: Warning: Other object in slot. I'm not sure what this means. Can anyone point me in a possible direction to understanding it

[late cave]

how do you log something in an editor utility widget? I can't find my print node output in any log...

[scenic galleon]

hi everyone, im starting to learn about spline, can some one explain the concept of loop index for me?

im talking the index in the forloop node specifically

[last abyss]

you can double click on the macro and it will show you exactly what it does

[scenic galleon]

im an art student learning spline for my environment with little programming background so that is even more confusing for me sr 😅

i do know basic node based workflow from substance designer so the other stuff makes sense to me, im just not sure what this variable represent

[last abyss]

it represents the current index of the loop

so if first index is 50, last index 100, it will loop 51 times and index will keep changing on every loop

[scenic galleon]

ok so how understand it, if i have a pipe and it repeats 50 times, each pipe is a loop and each pipe/loop has a unique id(index)?

[last abyss]

yeah that sounds about right, on each iteration of the loop (which is whenever all the code beyond the loop body is executed) index is being increased until its greater than last index

[scenic galleon]

neat! thanks

[urban solar]

How can I have a projectile travel to a crosshair in 3rd person perspective?

[zealous moth]

@urban solar
Trace from camera forward vector get hit location
Lookat from your projectile origin and make rotator towards that location.
Run it everytime you shoot

[open crypt]

I have a function that was working fine for months (and I've even had to check it out from source control to be able to debug it, so I haven't recently changed it) however, today it is saying it's an infinite loop - it iSN"T, it randomizes materials and will loop through the materials, removing each one from an array until there are no more and then it resets the array to a copy which was set at begin play - (basically serves as a library)

How do I get this infinite loop to shut up, I'm in a function so I can't set a delay for a dirty loop

The code is a bit long so I'm trying to talk it through before I start posting it

[zealous moth]

@open crypt you can go into settings and increase max loops

Set it to a bazillions

[open crypt]

wow, even still I didn't think it would be this much

that means it's looping through that much huh?

[zealous moth]

I dont know could be

[open crypt]

must have been - I increased to to 100000 from 50000 and it works

[zealous moth]

Hi5

[open crypt]

I have like 6 meshes with about 20 materials each - and I have a BP 'dead body" that chooses a random mat removes that mat, and then the next deadbody chooses a remaining material

[zealous moth]

I have had happen to me before and it isnt related to actualnloops but perceived loops. Increasing made it work and my performance was fine too.

[open crypt]

[urban solar]

This is my current blueprint for my projectile

[buoyant gate]

hello - gas pump, pick it up and walk away, how do i make a rope trail behind?

[earnest tangle]

You could try attaching a cable component into it and mess with that. They can be kind of janky though so YMMV.

[high ocean]

I've got an array of these structs:

How would I go about identifying those entries which have the same affinity, and merge their bonuses? 😐

[buoyant gate]

thanks will try, what do those letters mean

[earnest tangle]

your mileage may vary

[buoyant gate]

ok

thank you

@earnest tangle nah thats just locking the pump trigger to the floor

[burnt nest]

Then do it the opposite way. Attach the other end to the barrel.

[fleet cedar]

There's a cable component actor that you can drag out of the outliner and it's a little easier to use

[urban solar]

How can I delay the stamina regen for a few seconds?

[elder girder]

Hello everyone

I'm a traditional programmer looking for resources to learn rapid development and design with blueprints. Anyone have any recommendations?

[last abyss]

pause timer by handle then unpause when u want it to start again

[urban solar]

How do I unpause?

[last abyss]

there's a pause/unpause timer by handle function if you drag off the return value on the timer

[ionic sand]

Can anyone help me please?
I can't find a solution to my stupid problem.
I have an even graph (on fire) witch goes into my little ammunition function check
It branches out for two outcomes and goes back to the event graph. Is there a way to stop one of the branches to continue execution? Because right now they both execute at the same time.

[elder girder]

I have a simply character with a clamped camera attached on a boom. I tried to develop a simple transition using blueprints to set the location and rotation of the character based on a timeline. I'm having an issue where the rotation snaps back to the original orientation at the end of the transition. Not sure what would cause this, but any help would be nice.

Look forward to getting to know all of you.

[last abyss]

add a return value to your function of type boolean, then branch after you call ammo update

[urban solar]

Im still confused

[ionic sand]

Thank you. It worked!

[last abyss]

How so? where do you want to delay your stamina? when your stamina reaches max? when you're using stamina?

[urban solar]

Right after the player stops sprinting, wait a few seconds, then regen stamina

[quaint dagger]

Hooking up a widget for time of day, but somethings a miss as it doesn't appear through the widget despite binding it to it. Any help 😦

[last abyss]

So what you could do is make a timer for stamina regen delay, whenever you use stamina clear and invalidate that timer and when you stop using stamina set timer by event where the event is your stamina regen event.
otherwise you can do a retriggerable delay when you stop using stamina (e.g. when you release a button), add a boolean to check if the player is using stamina and if they are go back into that retriggerable delay. if they aren't you can then execute your stamina regen event.
theres probably other ways, but these are the ones i could think of

[last abyss]

there doesn't seem anything wrong in this, I'd see if the append returns something through print string first

[quaint dagger]

Tried print string and nothing 😟

[last abyss]

is the reference valid?

[quaint dagger]

sorry as in get time of day in real time format? if so then yes I've checked also.

[urban solar]

I cant understand why this or a delay isnt working

[last abyss]

I don't know, I just tried it on my side and it works fine for me :/ if you print the hours/minutes straight from the struct does it actually return the values?

[last abyss]

that wouldnt work because a retriggerable delay will return to the duration value anytime its being called, and its being called every 0.002 seconds

[urban solar]

I see

[quaint dagger]

Ok well i managed to get the print string to show but "clock" is throwing errors.

[last abyss]

this is what I meant with the retriggerable delay way

[last abyss]

I guess your clock variable is not referencing a valid widget then?

[quaint dagger]

Lovely jubbly! got it working thanks @last abyss

[candid blade]

hi y'all
so whats the best way to approach this? I'd like the item in the inventory, on drop, to populate a different slot

[last abyss]

on hover of the slot set it to be a 'current hovered slot' and then on release set it to populate that slot?

[candid blade]

the slots are being populated through BP though, there's only 1 slot BP

i've set the slot number through a function on begin play

[last abyss]

I see, is there no on mouse hoovered event for that slot you're creating though?

[candid blade]

there is, but its for the main slot widget which is being populated multiple times on begin play into a wrap box in the inventory panel

i got the sound+border appearing on each slot (when hovering on it as you can see in the video i posted) by just doing on mouse enter on the main slot widget

basically, how do i get ishovered to know which slot i'm hovering over?

[urban solar]

Yea I tried that, and it didnt work for me

[dense citrus]

hey, i'm trying to make a sorta complex node tree for movement, and i was jsut wondering if there's a better way to do this; (note, i still wanna switch on specific ints)
so i was wondering if there was some sorta switch on int if in range type thing?

\

(sorry if i cut anyone off)

[remote belfry]

Hey peeps. Is there a way to do something like right click > Connect selected nodes? EX: Connecting multiple variables to one a Set Visibility node on multiple Widget buttons. A curiosity more than anything.

[sonic pine]

Hiho i have a little Problem.
I want to change my skill Button Style if im changing the Character or the MainClass but nothing happened.

I have 3 Different MainClasses and 13 Different CharacterClasses

[icy dragon]

This is honestly as elegant as you can get with BP.
It could be much more elegant if done in C++, but that's out of the scope of this channel.

[urban solar]

Thanks for the help, but Ive decided to figure this issue out later as ive been working on it for hours

[open crypt]

If I want to ensure a level is fully loaded - all the assets and textures are loaded/cleanly - and I want to stream it in, right now it is a bit jerky - how can I reduce this?

[last abyss]

you could pass in the main widget (inventory) when you're creating the slots and then in your slot widget, on hovered you could set self as a reference on your main widget? and on unhovered clear the widget? then on release you check if that reference is valid and do the stuff you're trying to do. I don't know if its the best way, but it should be a way to get it to work.

[dense citrus]

tthat'sa valid, and i feel like learning c++ when i'm 90% of the way here, is the best i can get lel

[urban solar]

Anyone know a way to only decrease the stamina when I jump, currently, the stamina is decreased when I click space

[open crypt]

what kinda of movement are you talking about?

[open crypt]

You have to execute that branch on the left - it's not connected to anything

You are literally telling it to just take 5 away from it everytime - the other one doesn't matter because it doesn't get connected to anything else

[dense citrus]

@open crypt just to fill you in ig, is i'm making my own physics based player character, and to allow quick and easy switching without 50 "if" statements, i'm doing this to switch between them all, so for instance;
0; null inputs
1; crouch pressed?
2; sliding?
4; airborne?
etcetc

so instead of having 4 ifs, basically i'm saying if this and this are happening, do this, if not then one of these instead

think of it like a huge if sheet, but with wayyyyyyy less functions

[open crypt]

No man, do this with behavior trees and animation blueprints

[dense citrus]

thsi is for logic tho

[open crypt]

look at the way they have setup the animation blueprints, they use logics

[dense citrus]

like, switching movement controllers and jazz

[open crypt]

literally it's called a state machine

open up the third person animation blueprint

but also you'd need to watch some videos on the system

and if you haven't taken a class yet, do that too

[icy dragon]

I never heard someone came up with this ridiculous setup

[dense citrus]

self taught bb 😎

when stuck to your own logic lol

[icy dragon]

I suggest you to go take a look at Content Examples on physical animations.
It's in the launcher's Learn tab inside Unreal Engine section.

[dense citrus]

and for context, i don't even know how to open the animation blueprints. ik materials, particles, most nodes i need to know to "code" etc. but nothing about anim blueprints

doesn't help 90% of what i try to learn, defaults to in blueprints, so woo

[ripe tiger]

Hello, I posted a problem I am having with a widget in the UMG channel several hours ago, but have not received a response and have not found any solutions from various testing and googling. Does anyone here think they could give my problem a look?

[dense citrus]

keep in mind; this is just for logic, not animations (if that matters)

[open crypt]

So, if you could time travel back and give yourself good advice, assume that's what I am doing FOR YOU, right now - go take a class on udemy, they are 15 bucks and have like 20 hours of footage and will walk you through EVERYTHING step by step

and no, you are saying "just for logic" because you aren't aware of other systems - you are sticking to something you feel more comfortable with, which is natural, I did the same thing

Ryan Laley also has a great FPS tutorial series

[sonic pine]

Someone have any idea?

[icy dragon]

Being a self taught is not an excuse to not look for good learning resources.

[open crypt]

did you hit a break on the event , f9 on your node/function you want to check, the system will tell you

[dense citrus]

see, i'm not saying you're wrong, but i've only ever seen this done with animations, not to do with any sorta logic like should i do x or y

[open crypt]

I'm telling you to spend the time to do one of those courses before you do anything else

[dense citrus]

you assume i said that out of ignorance, when in reality i just really didn't know

[open crypt]

**out of ignorance**, when in reality **i just really didn't know**

that literally is what ignorance means, you don't know - I'm not placing a value judgement on it, HOW could you possibly know if you haven't learn or been taught?

[dense citrus]

that's fair, i've mostly just followed vague tutorials piecing together broken knowledge and piecing what i learn together.

[icy dragon]

What tutorial you're following for that ridiculous logic you're attempting?

[sonic pine]

What should the function tell me? ^^

[dense citrus]

to me, ignorance has always been "fuck that, imma pretend it doesn't exist to get by"
when for me, it's just i've only saw it ever used for animations in tutorials, so i had no reason to assume it can carry logical functions.

after looking it up, my definition was wrong of ignorant so yee

[icy dragon]

Which tutorial are you following?

[dense citrus]

but that's my point, it wasn't out of malition, just bad knowledge

[open crypt]

Hit F9 on it and you can "step through it" and then hover over the variable values of that instance (instance meaning that copy of that asset you are running in the game)

[dense citrus]

i'm replying the best i can to multiples, gimme a sec, about to reply now

[sweet coyote]

Good evening all

Looking for someone that can point me in the right direction on these warnings I'm getting when I place my blueprint into the level.
LogUObjectBase: Warning: Object is not registered
LogUObjectArray: Warning: Other object in slot.

[dense citrus]

none specifically, i've pieced together what i've been told across multiple people and channels (people being here).

the main 3 channels i could say my knowledge is from is from;
mathew wadstein,
dean Ashford,
and
matthew palaje

[remote belfry]

@dense citrus "to me, ignorance has always been "fuck that, imma pretend it doesn't exist to get by" That's obstinacy.

[sonic pine]

aha ok

[dense citrus]

thx, always sucked most with english lel

the logic for my thing, is a way take in multiple inputs, and do a specific thing based on the conditions, so instead of having 5 if nodes, to me this seems more logical and efficent

given what i know

also, sorry for the double ping, @open crypt you have any courses you can personally reccomend?

[remote belfry]

I call that jamming sh!t together till it does what you want. It's messy AF, but works for me. lol

[open crypt]

Any of the highly rated ones that look interesting for you

[dense citrus]

exactly, i'm actually like 95% done my movement, ALL of it. from shooting to wallrunning and so forth.

and a big reason i'm doing this instead of getting a digree in computer sciences, is because it's the classic example of the donkey that's both hungry and thirsty.

better to fail then not try at all the way i see it. and even if it is botched code at the end, if it works, and runs well enough, what does it matter?

[icy dragon]

Those three are good sources, so the blame is on you.
Go study animation blueprints, and dissect the Content Examples project. The latter contains comprehensive examples on using Unreal Engine features.

[open crypt]

He needs something with structure though

[icy dragon]

Botched code will affect teamwork, so it won't be noticeable in absolutely one man projects.

[remote belfry]

I mean I wouldn't take it that far, but kind of. Should always keep refactoring in mind.

[dense citrus]

ive been doing my best to keep structure and not go too crazy. making sure to not have everything be a jumbled mess, and so far, i feel like it's pretty well steuctured, good tags explaining what's going on, plent of comments, etc etc.

[dense citrus]

long term, i don't even plan to be a coder, technical artist at best tbh. still good to know/learn what you're talking about, butt i don't really feel like getting a degree in computer sciences will be worth it for me and this

[open crypt]

I mean like structure like a - step 1 -

it's 15 bucks

[dense citrus]

true, I've redone my code like 6x trying to make it better

[ripe tiger]

The term ignorant is typically only used to insult people so you are correct in that feeling.

[dense citrus]

yeh, the definition according to google is just "lacking knowledge" basically. but i see theor point if they wanna get into semantics

[remote belfry]

Only dolts use ignorance to try and insult people.

[dense citrus]

valid lel

[urban solar]

How would I go about doing that?

[clear osprey]

is this a stupid bug in ue4.26.2 not changing the color of the tint of a user created widget by Setting the tint of the widget using set color and opacity node? this affects all child widgets.
Target is User Widget.

[open crypt]

What do you want to have happen?

[urban solar]

Energy gets taken away once the character actually jumps, not click space

[open crypt]

You need to first make a boolean to see if they CAN jump

so basically every time they jump, you set the energy to a certain value

and on that end of that, you keep checking if the energy is = whatever your minimum threshhold is

energy less than or equal to 4, (because 5 was your amount) then from that branch you execute a "set Can jump to false"

[sudden nimbus]

also note that Movement component can tell you if you are on the ground or not (IsFalling)

[urban solar]

This actually fixed the issue of spamming space and still cosuming energy although you're in the air, my only issue now is that even if I'm under 5 energy which is needed to jump, when i click space my character doesnt jump the energy is still consumed

[clear osprey]

quick fix to this bug, dont set the tint opacity in the editor if you want to set it using set color and opacity

[pallid radish]

anyone know why blueprint function library cannot be created? New project (c++ and Bp)

[candid blade]

not sure how do any of this node-wise ): there has to be an easier way to know which slot is being hovered

[clear osprey]

maybe you can create this inside the code by modifying the engine source internally

[last abyss]

because you can make one this way I guess?

[pallid radish]

thank you haha

[clear osprey]

you can't it to any thing in case it needs

creating on code side is more functional

[last abyss]

yeah but if you're creating a c++ class you can choose to create it by blueprint function library, just not when you're making a blueprint class

[open crypt]

What's the quickest way to make something move in an orbit through blueprint -?

I can point it at something and probably lerp between two points but I'm not sure how to do that to go around in a circle

[terse latch]

Hello, I have been working on a project for alittle but now. But I ran into something that I am not sure how to get around or get working. Tho it might not be the best I am attempting to make a ranged weapon (pistol) with projectiles. I am hoping to make it simple but how might I add accuracy/inaccuracy to a spawned actor? I have been trying to mess with the spawn location and rotation. But sadly no change.

[mental badge]

I have made a base material with textures for different material properties. Problem is, some of my material instances want to be able to not specify all textures. But I get an error saying that "Found NULL. Requires Texture2D". I can work around the problem by adding a Static Switch Parameter and then the instance can set the parameter to true or false, and when false, there is no error if there is no texture. But how can I make it such that it can just detect if no texture is specified, and if so, do nothing (as if the 'false' case happened on my switch)?

[trim matrix]

is the spawned actor the bullet?

[mental badge]

I can't find anything like an IsValid or IsNull etc.

[terse latch]

Yes it is a tracer/proj

[trim matrix]

One way to do it would be to change to pitch and yaw of the spawn location

Use the world location of an arrow component as the spawn location

And you can get random angle in range to change the direction on fire

Alternatively there is a plugin called "Easy Ballistics"

Comes with some good tutorials as well

[balmy hamlet]

is the on unposses node in the player controller run on the server, owning client and server, or everyone?

[terse latch]

I will see if i can get the easy ballistics and mess with the pitch and yaw. Will it still work if the proj is spawning from the muzzle socket?

[urban solar]

How can I make it so that the projectile goes towards a crosshair or the center of the screen? This is the current system for testing purposes

[balmy hamlet]

you would want to get the camera's rotation and location

[runic terrace]

^

[balmy hamlet]

or, if you want to shoot from somewhere else, you either have to shoot parallel and accept that it'll never completely line up, or raycast and have the rotation be set by the position of the barrel and the hit location of the raycast

[urban solar]

Its from a third person perspective

[runic terrace]

get forward vector of the camera and plug it into the rotation, it will get the rotation facing the X direction

[balmy hamlet]

go with a raycast from the camera, and set the rotation with thatwith that

[runic terrace]

Then make a linetrace from the camera's location to the crosshair's direction. Then get the hit location and make "get look at vector" from the muzzle to the hit location. Then plug it into the rotation

[balmy hamlet]

so raycast from camera to get target -> set rotation based on position of the launch, and position of the target

oh yea its called linetrace, sorry lmao

[runic terrace]

same thing just different names lol

[urban solar]

Do I need to split the start and plug it into the X

[orchid garden]

this is what i did to make a laser always hit the center of the screen on a drone

that gets the position of the laser start from a socket attached to the mesh.

that creates the laser

hope it helps.

[balmy hamlet]

I'd plug in camera location into start, and (camera location + forward camera vector) * line trace length into end

[orchid garden]

being its a projectile, he doesn't want it firing from the camera, rather the gun, hense why i showed the full laser routine.

[balmy hamlet]

then break out hit, and find the impact point, and then use that as your target point

and your player as the start point, and use that to calculate the rotation to launch

[orchid garden]

being its third person as well, you'll want to modify the animation for the held gun so it points at the center of the screen as well.

[balmy hamlet]

^ good point

forgot about that

[candid blade]

trying my luck here again, i'm really stuck on this one tiny thing in my inventory. I've managed to drag an item in my inventory (cursor is hidden cuz of screencap but i'm holding that smaller icon) but I cannot manage to understand the functionality of dropping it on an empty slot to populate it. the slots are being made into a wrap box on begin play, from 1 main slot BP so I can't reference all of them separately (or can I?). if I add for each loop on the 'on drop' function inside the main slot BP, i'm able to get a print of all empty slots when I try to drop an item in them but I'm unable to get it to show up on said empty slot

[worthy tendon]

how are your slots populated?

[candid blade]

i have a function running in begin play alongside the main hud being created

it's basically adding children to the panel in my inventory widget, it's populating a wrap box

slotspanel is the wrap box being populated by the main widget slot

[worthy tendon]

You can use the Drag and Drop Operation to pass an information on how to move item to the new slot. I wanted to know how you populate those two items in to your slots.

create a new blueprint based on this

call it something like ItemDragDropOperation.

[candid blade]

oh the 2 slots being used in the video? those have been populated with items by a add item function that scans for an empty slot, once it finds one it runs an update UI function that is inside the main slot widget that basically applies texture and more information from datatable onto it

i hope i'm explaining this correctly, I've followed a tutorial for this inventory system and kinda changed things around, i'm still new to all this. my bad if it makes no sense I can continue sending pics

[worthy tendon]

you should override OnDragDetected for your slot widget. there you create the operation. you need to pass your current item as the payload. then, override OnDrop function, get payload from the operation so you know what item was being moved, then do the actual moving.

if your item is not UObject (for example it's an struct) then you create a custom variable inside ItemDragDropOperation and expose it on spawn and use that instead of payload.

[candid blade]

and once I have the custom variable from the dragdrop operation, how would i go about moving it to specific slots?

how do I populate a slot without a reference that is being created on begin play with this variable i'd make from the dragdrop operation (considering my item is a struct, just visual information)

[worthy tendon]

it depends on your current implementation. each slot can have a index. you can pass that index into drag and drop Operation as well. so in OnDrop function, you know from which index the item is coming from.

[candid blade]

I'll try to make this work with all the information you provided, hopefully I can make this work. thank you very much for your time!

[worthy tendon]

@candid blade something like this. but again, it depend on your current implementation

[candid blade]

how would you set the variable payload inside the new dragdrop operation?

[worthy tendon]

payload is uobject. it can be anything, usually it represents the item being moved.

you can leave it unset.

or you can pass reference to self. later when you want to use payload you have to cast.

but it's better to create a custom class with well defined variables (my example above is DraggedItemIndex)

[candid blade]

can't get it to work unfortunately

[mint turtle]

I need a help with that bug

`Blueprint Runtime Error: "Accessed None trying to read property Persistent_UI". Blueprint: SaveLoad_State_Controller Function: Execute Ubergraph Save Load State Controller Graph: EventGraph Node: Save Game to Slot

Blueprint Runtime Error: "Accessed None". Blueprint: SaveLoad_State_Controller Function: Execute Ubergraph Save Load State Controller Graph: EventGraph Node: Save Game to Slot

Blueprint Runtime Error: "Accessed None trying to read property Persistent_UI". Blueprint: SaveLoad_State_Controller Function: Execute Ubergraph Save Load State Controller Graph: EventGraph Node: Bind Event to Saving State

Blueprint Runtime Error: "Accessed None trying to read property Persistent_UI". Blueprint: SaveLoad_State_Controller Function: Execute Ubergraph Save Load State Controller Graph: EventGraph Node: Bind Event to Load State
`

[maiden wadi]

@mint turtle It looks like you are trying to access invalid pointers.

[mint turtle]

But he cast to controller and the controller has the value (i believe, isn't my code)

[maiden wadi]

Dunno. But judging from the error, somewhere there is a blue variable named Persistent_UI, and it's being used without an IsValid or Impure Cast.

[mint turtle]

@trim matrix @maiden wadi

[maiden wadi]

Yeah. But the blue variable after that.

It's not being checked.

You got a controller pointer, casted it to another pointer type, then got a pointer out of that, and you're using that pointer without checking it's validity.

[mint turtle]

I put the check "is valid" and it keeps giving the error.

[maiden wadi]

Then you didn't put the IsValid on the right pointer.

[mint turtle]

Oh gosh

This job is for today

[maiden wadi]

This thing here.

That needs to be IsValid checked after the cast.

The controller isn't the problem.

The pointer coming from the controller is.

[mint turtle]

I'll try

[maiden wadi]

Just needs this.

[mint turtle]

Worked...

But...

Will work well?

[trim matrix]

What could cause an event not firing up? Funny thing but with name LookUp it works perfectly. I am working on blueprint that wasn't entirely made by myself.

[paper galleon]

Check that the event is actually bound to the mouse movement in the project settings.

Input bindings are usually stored in the engine.ini file to use external bindings you have to import the ini file of that project/ plugin

[trim matrix]

The mappings are present in DefaultInput.ini

[paper galleon]

Nothing should prevent that from working unless it's in an actor that doesn't have an input component. Basically anything that is not a pawn and it's subclasses. Or a player controller and it's subclasses.

[trim matrix]

haha, other events are working XD but this one doesn't

[paper galleon]

Yeah. Sorry, I mix up the .ini names sometimes.

[paper galleon]

Then I don't know what could be going wrong, sorry.

[trim matrix]

Thank you very much for an effort ♥, my colleague doesn't know how to deal with this too.

[paper galleon]

Np. Hope you can sort it out

[open crypt]

How do I keep track of all the spawned actors on a level - for some reason, when I unload the level they are not immediately deleted (and the effect is obvious) so I want to delete them first before removing hte level

[atomic salmon]

https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/EditorScripting/LevelUtility/GetAllLevelActors/

Should also work at runtime but give it a try

Otherwise there are other ways

Sorry disregard the suggestion above, I just checked the source code for that method and it is checking if in Editor or in PIE

You can always use GetAllActorsOfClass(AActor)

[rough sinew]

I have multiple types of objects in the game which have open/closed or used/unused states. Any idea how can I save/load these states (a bool) in a save game slot without manually adding a unique ID to each one?
(I am also using level streaming so they will be over multiple levels, but on a single map)

[tough plume]

is there a nicer way of doing this?

[floral quail]

I work as a .net dev and want to play with blueprints for fun. Every tutorial I've found seems very focused on programming basics. Can anyone recommend a blueprint tutorial aimed at programmers?

[atomic salmon]

@tough plumeyou can use a Select as an alternative

[tough plume]

@floral quail also have programming background and decided to just work on something and learn while i do it, try to set yourself small goals, take the topdown project and change movement to wsad for example

[rough sinew]

You can change your variable type to map and use FIND.

[floral quail]

Yeah did a few things that worked completely as expected, but some of the behaviour still eludes me. I tried to inspect the source for default player movement, but it's not included in an accessible way

[tough plume]

ue comes with some basics implemented, so there are functions for movement, taking damage, etc, ready for use

huge surprise for anyone who worked with unity before, lol

[floral quail]

Yeah, but I can't tweak the movement

Wanted to implement crouching

Change jumping height and so on

[tough plume]

https://www.versluis.com/2020/10/crouch-in-unreal-engine/

[floral quail]

Cool! Will check

[tough plume]

https://answers.unrealengine.com/questions/46307/how-can-i-change-a-characters-jump-height-in-bluep.html

[floral quail]

Tried to stay clear of tutorials, but will check it out

[limber jacinth]

@floral quail The source is C++, is that what you are looking for? If so DevEnabled has some good videos on explaining how Pawn Movement works.

[tough plume]

if you dont want to create character controller from scratch itll just take some trial and error to figure out existing one

[tough plume]

how do i do that? is it a node?

[knotty fox]

Guys Im pretty new to UE4 so I have a question.. Can you cast to a blueprint FROM the level blueprint?

to get a value

[floral quail]

@tough plume ah so it's not properties but setters

[atomic salmon]

@tough plumeyes it's a node which allows you to produce an output value given an input value with a 1:1 association

[tough plume]

@atomic salmon i cant seem to find it

[atomic salmon]

@tough plumeif you created your own Enum there will be a select automatically created for it

[junior totem]

https://youtu.be/ommD3qgCrnI?t=523 in UE 4.26.2 is posible to not find Cast to LobbyPC?

[tough plume]

but that still makes me end up with enum

so id stull have to use switch to assign it stuff and return

[atomic salmon]

@tough plumeno, you plug in your other variable and the output will be one of them, which you can send directly to the output node

so one output node instead of 7

[tough plume]

cool, that does help a lot 🙂

thanks

[meager spade]

Is there an event for when any widget is added to the viewport?

[tough plume]

also an option but most likely less performant, though it wouldnt matter that much here

[rough sinew]

I think only for individual widget adds to the viewport (Construct or OnInitialized depending on the case)

[meager spade]

Okay

[faint pasture]

That's not a valid question. What do you think casting is?

[tough plume]

is there an event that happens at the end of tick? id like to have a variable with mouse position from a preview frame

[limber jacinth]

Doesn't the Construct() of the Widget BP fire when it's added to the Viewport and Destruct() when it's removed? Or have I not have enough coffee yet?

[meager spade]

Wouldn't this be solvable by having two mouse position variables and using a flip flop?

Nvm, I read previous frame

[rough sinew]

I think they mean any widget added regardless of what it is. If not, you are right.

[limber jacinth]

Ahh, yeah that makes more sense.

[tough plume]

if i wanted to have a global blueprint with a bunch of functions that i want to use everywhere, how could i do that?

[rough sinew]

Blueprint Interface

Or maybe you want a component?

[paper galleon]

Blueprint function library

[meager spade]

Do you want variables as well? Otherwise use function library

[paper galleon]

Don't need a class instance to call the functions

[tough plume]

it is not possible to access variables in level blueprint from other blueprints?

[fiery glen]

you are probably better off storing "global" state in the gamemode

[tough plume]

and where should the ui be constructed?

ive been following some guide which told me to expose ui variable from level bp

so i imagined it is so that i can access it from somewhere else later

[paper galleon]

Depends on the kind of ui

[fiery glen]

you will probably have it inside a widget blueprint?

that reads information from where the game score etc is stored?

[tough plume]

i have added it in level blueprint

should it be done in gamemode? or maybe character itself?

[paper galleon]

What is the UI for? Is what I meant

[tough plume]

displays image on screen which indicates from which direction the attack will be executed

[paper galleon]

That is most likely to be on the player. I would hold reference to the UI on the player. Create and hide it from the player bp.

[cursive path]

Hi how to fix when i keep jumping on wall it throw me to space i think it is collision problem

[tough plume]

how do you detect grounded state? ie when player can jump

[limber jacinth]

Could use IsFalling from MovementComponent - Returns true if currently falling (not flying, in a non-fluid volume, and not on the ground)

[paper galleon]

Also, is your jump a custom implementation?

[spare vessel]

getting infinite loop error with this how do I get around it?

[fiery glen]

the loop is entered once and nothing inside the loop makes it not held

I assume you want to branch off tick to do whatever this loop is supposed to do

based off of "Is Held"

(also funny username coincidence)

[sand shore]

And you get around this by starting/stopping a timer

then the event the timer calls can have the loop body logic

[lofty hound]

Is there a way to organise functions into categories on BP like variables?

[fiery glen]

yep, set the category

[fiery glen]

you could do something like this to trigger an event every second

[spare vessel]

Thank you figured it out was messing with my head:

[fiery glen]

funk solidarity

[spare vessel]

Also are you more funky than me?

[fiery glen]

unsure

[cursive path]

My problem is with power ik when i jump i get sink down land scape and back yo normal position

[fiery glen]

better off asking the official Power ik discord https://discord.gg/VHhXTTj

[cursive path]

I solve it

Just noe

Now

[fallen glade]

what's the fastest way to know if a point is at the left/right of a specified direction vector?

[proud gulch]

Which dimension does your vector have?

[fallen glade]

3 @proud gulch

[proud gulch]

Then you'll need another vector to calculate that. Do you have an 'up' vector, for example?

[fallen glade]

in this case the direction vector is pointing towards secondary points on another actor so I can get anything from their relations

[proud gulch]

Do you use a camera to calculate the direction vector, for example do you want to determine if something is either left or right from the camera's point of view?
If so you could use the camera's up vector and take the cross product of that and the normalized directional vector. That'll give you another vector, also normalized. Then you create a directional vector to both points, one vector each; and take the dot product of each one of those and the previously calculated vector and then you can determine with that, if that point is either left or right.

[atomic salmon]

@fallen gladeill posed question as a direction vector has no location in space, so there is no left or right respect to it

[fallen glade]

right... oh. makes sense haha I forgot

[atomic salmon]

so you need a location and a direction from it, then it makes sense

or you have two directions and you want to know if the second one is pointing to the "left" or to the "right" of the first one

for that you can use the dot product between the two direction vectors

(namely between the first vector and a vector normal to the second one)

[open crypt]

I've done a new build and I tested it for over 30 minutes, visiting every level there was and I closed it down and everything was fine - when I opened it up, it begins to run and about 5 seconds into the level, it crashes my entire computer instantly - I've not updated my drivers today and this happened in between running it just fine for the first time - I can't recall loading any save data but how could I find any logs if the computer immediately seizes up

a really, really shitty way to start a day after working for the last 2 months - every build was fine but maybe I'm asking to much of my older machine

[fallen glade]

This is all I have access to that I think it's relevant plus A forward and right vector. I've been trying for a while without success. I think I need to go home and try again tomorrow I'm tired

[fallen glade]

maybe engine files got corrupted? skeaky windows update?

[open crypt]

in between running it - I mean I ran it fine for 30 minutes, closed it down, and then started it back up again

and after that it's like stuck in loop

I have no idea how to even begin to debug it

it doesn't crash in the editor

[fallen glade]

is it unreal or your pc committing seppuku ?

[open crypt]

bro I don't know but I've spent the last 3 years of my life working to this point

[fallen glade]

so it's just the built game that doesn't work?

[open crypt]

yes but it's not just that, I used it for like half an hour fine

[proud gulch]

Is 'A' an actor as well?

[fallen glade]

yep

[open crypt]

performance tanked in a few spots but it still ran

[fallen glade]

sounds like your pc is failing

if you haven't changed anything

[open crypt]

fuck I don't have money to fix that - but if it is an instant crash, how can I monitor that

I'm going to take a breather, meditate, and then try uninstalling MSI afterburner - it's caused issues before but I can't figure out how to max my fan speed without it, what a stupid issue that you can't control your fans any other way

[fallen glade]

sorry to hear that I hope you fix it!

[orchid garden]

your whole pc shuts off or windows just crashes?

[proud gulch]

As long as A's up vector - I'm guessing we're looking top down - isn't parallel to the AtoB vector, then it shouldn't be a problem. But you should be mindful of the order in which you use the vectors.
Calculate the cross product between A's up vector and AtoB, but normalize AtoB first. You can then use the resulting vector, let's call it C, it'll be a normalized vector as well. Calculate the dot product of C and AtoB1, if it's positive then it's on the left, otherwise on the right, you can do the same for AtoB2, calculate the dot product of C and AtoB2.

[open crypt]

entire pc

it didn't crash the first time

ran it absolutely fine for 30 minutes

i mean performance was choppy but I'm aware of it, nothing 'abnormal' just need to optimize

[orchid garden]

if the entire pc is shutting down then your processor is getting too hot. this can result if UE is running at 100% cpu usage while your running your game. It may just be something inside the game causing extreme cpu usage.

[open crypt]

maybe i should delete saved

[open crypt]

why didn't it happen the first time?

[orchid garden]

something changed?

[open crypt]

not sure what could have? it happens basically a few seconds into loading

wait can I just delete saved folder of hte project?

[orchid garden]

honestly the first thing i'd check is make sure your cpu fan is still working, the cpu itself isn't coated in dust (dust holds heat in).

[orchid garden]

I won't tell you what to delete/not delete.

[open crypt]

it's an AIO, i've sprayed it out

i'm going to delete the saved folder in the packaged build -

[orchid garden]

hehe i use that program as well.

[open crypt]

I was literally going to go back into editor and fix the changes I had noted when moving through the build so it's okay if I lose this build but I need to learn what this means

is there any other program I can quickly grab that can max out my fans?

[orchid garden]

couldn't tell you, i don't use MSI boards, my mb has the ability built into the bios so i can toggle it on / off.

[open crypt]

pretty big log file

I've heard about these things causing crashes

[orchid garden]

if the graphics card overheats you can end up with a mock shutdown, the displays will shut off, but the pc will still be running, usually you get artifacting before the graphics card(s) crap out though.

[open crypt]

no, it's not a gpu crash, I am very familiar with those

[orchid garden]

ouch thats huge 162mb for a log file??

[open crypt]

[2021.08.03-14.41.17:175][463]LogOutputDevice: Error: [Callstack] 0x00007ff62c335b00 MyProject.exe!UnknownFunction []
[2021.08.03-14.41.17:175][463]LogOutputDevice: Error: [Callstack] 0x00007ff631d4f942 MyProject.exe!UnknownFunction []
[2021.08.03-14.41.17:175][463]LogOutputDevice: Error: [Callstack] 0x00007ffff6357034 KERNEL32.DLL!UnknownFunction []
[2021.08.03-14.41.17:175][463]LogOutputDevice: Error: [Callstack] 0x00007ffff6602651 ntdll.dll!UnknownFunction []
[2021.08.03-14.41.17:175][463]LogOutputDevice: Error: 
``` not exactly a clear error

[orchid garden]

looks like your builds got a issue

[open crypt]

odd

the folder is read-only

that can't be helpful

okay so deleting save foldeer seemed to work so obviously this log file is the culprit

ran it just fine , need to turn off the logging or somethign

[orchid garden]

or cut back on what your logging. still with the size of the file you'd think something was causing a issue. might want to watch your logs for awhile.

[open crypt]

It is ticking out some warning messages regarding divide by zero - while the engine doesn't actually try to divide by zero, it's basically giving me 5 lines a tick -

[orchid garden]

if its giving you a divide by zero error sounds like maybe you have a empty var in one of your math functions?

i'd check your most recent changes to the game. (should always backup builds in series so you can roll back to a previous working build if needed)

[maiden wadi]

@open cryptWhere is this log from?

Oh, UE log.

This is one reason that it's very good to run your project from an IDE instead of launcher startup, and run with debugging symbols. Much better crash logs.

[torpid scroll]

anybody rhave a solution for this ?

[maiden wadi]

That's probably a question better placed in #source-control. People there will know better.

[runic urchin]

Is there a way to make an actor hidden to a specific camera?

[late blaze]

So I've ran into an issue when it comes to the Slider in WidgetBP. Basically I have 5 different sliders linked to 5 different stats. Now these slides have a min of 0 and a max of 200. There is a step size of 1 and I want the maximum amount of points being able to be invested to be 500. I looked at the behavior for the slider, but when it checks if the remaining points are less than or equal to 0, then it locks, but that doesn't stop me from putting the points to the max before I release my mouse button. Any solution to this?

[glossy bane]

Anyone that can advise, I'm using the character location in the Z-axis as my score system, and this works fine until I have to teleport the character back to a location that has already been passed, making the score then reduce to that location, while I want it to just keep counting as normal. Ive tried multiple solutions and none seem to hold up if I want to repeat this process n-amount of times.

[orchid garden]

( get player Z - get last TP Z ) + Score = current score?

[glossy bane]

but in this case the player Z and score are interchangable, which is kind of the issue, I have tried using a bool which gets set to true when the teleport occurs, then use it as a condition to get player z + teleport distance = score but it seems to fetch the last score which was at the teleport and add it ontop of that instead of adding it on the score after the teleport

[orchid garden]

something along that lines anyway, it sounds like when they are tp'ing back your resetting the scoreboard to the current Z.

[glossy bane]

yeah exactly

[orchid garden]

sounds like you just need a var to store the score in, then add the player Z from tp to that score, if they tp again, set that stored score again, and repeat?

[glossy bane]

yes I've been trying different variations of what you described but I would either end up adding the tp distance ontop of the score pre-teleport (resulting in it being too large) or it would add it and reset it back to the char Z for some reason I cant wrap my head around how exactly to set it up, but I will keep trying thanks

[pine trellis]

can someone help? I am trying to make my character jump when it lands but it never jumps it just lands

[paper galleon]

So what you're doing is contradictory. AFAIK, all jumping related processes are stopped when event on landed is triggered. I suggest a delay? it might work.

[ripe tiger]

Isn't there a node that could do this easier? Asking for a friend.

[last abyss]

select node

[pine trellis]

@paper galleonok thanks will try that work around

[paper galleon]

Switch.

Check if a switch on int node exists

[gritty elm]

is procedural slice possible on skeletal mesh? and how

[paper galleon]

I think I saw some tutorials on YouTube. A quick search should get you what you need

[broken wadi]

When you hover over a Cast To it says "NOTE: This will cause the blueprint to always be loaded, which can be expensive." Which blueprint is it referring to? The blueprint I have open and am currently working in or the one being cast to? Also, will this still happen even if the cast failed?

[ripe tiger]

Thank you Kira. Now it is much better.

21 nodes down to 14, very nice. 😃

[broken wadi]

Here's my scenario: I have one parent character with 6 children characters. Only one can be possessed per playercontroller at a time. The game is server authoritative however it also has an offline "practice mode". I already setup the blueprint for the main parent character to handle respawning with server side checks, but now the practice mode respawning doesn't work. So I decided to GetGameMode then CastTo practice_mode and check if its valid before respawning server side or respawning for practice mode.

Basically everything the characters need to interact with is the same on every level, just arranged in different locations.

But it sounds like Casting will cause everything on the casted to blueprint to load, which I suppose in my case is okay?

[paper galleon]

It's not so much the casting as asset management

[broken wadi]

I'm making a CTF game, so every level has the same interactive stuff.

[paper galleon]

Sometimes, casting is inevitable. It's how you manage references and assets and loading that really matters.

[broken wadi]

So here I can see some duplicates on the right side. Should I create a separate parent character just for offline (practice mode)?

[late blaze]

Is there a way to control whether a slider handle can move left or right?

[broken wadi]

Then I won't have to even bother with casting in this case....hmmm thanks for the tips @trim matrix

[gritty elm]

i have a character, when i attach static mesh to my character and enable collision, it won't attach to character anymore

i want to keep attach to player and enable it's physics as well

because i have an static mesh component ( procedural mesh component ) and i want to slice it

[open crypt]

How do I do this from a packaged build though?

crap how much space extra is that?

[gritty elm]

does anyone works with procedural mesh component ( slice mesh )

i have an static mesh attached to my character hand, i want to slice it when it touch anywhere

but when i enable physics on that object, it doesn't attach to character hand anymore

[maiden wadi]

You can also attach debuggers to other processes as well. But this is venturing into C++ territory.

[warm swallow]

Hey there, I put together this simple blueprint to launch an actor, but it does not work

I've enabled the simulate physics option

I've also attached a sphere shaped static mesh

[gritty elm]

enable the physics, set simulate physics before add impulse, also check collision, try to check vel change and increase value

[warm swallow]

Will do, thank you

nothing

Here's the current blueprint

[remote belfry]

I've been trying to test if a widget is visible. This is the only way I could get it to work, but it only works once. Any ideas?

[glass crypt]

What's the difference between instanced static meshes and hierarchical instanced static meshes?

[spark steppe]

https://forums.unrealengine.com/t/hierarchical-instanced-static-mesh-vs-instanced-static-mesh/144284

also, unreal uses ISM by default for a while now

[glass crypt]

Thanks!

[pine trellis]

can someone p lease tell me what these 2 nodes are?

[spark steppe]

they just compare the value of 2 enumerators

[paper galleon]

Input will not work in a regular actor. It has to have an input component to register inputs. Even then, it may not work

[warm swallow]

Ohh, thanks

[pine trellis]

how do I call then @spark steppe

[spark steppe]

drag out from an enum output and search for equal

[warm swallow]

How do I add an input component?

[spark steppe]

or search enum equal, idk if you'll find it like that tho

[paper galleon]

You usually don't do that for an actor. And you can only do it in cpp.

[warm swallow]

Oh

[paper galleon]

I'm not sure it's even possible for a regular actor. Maybe, maybe not.

Use a pawn or a character. Or find a way of sending the input event from the above named to the actor in question

[warm swallow]

Ok

I recreated the blueprint as a pawn

[paper galleon]

You can check tho. If you can add the component from Bp. Just to make sure. It's a very long shot.

[paper galleon]

Input component

[scenic galleon]

how can i move the spline tangent indepently to achive this kind of shape?

[warm swallow]

Nothing comes up

[paper galleon]

Makes sense if you want direct control

[warm swallow]

It's just a test for now

[paper galleon]

Ok. Like I said cpp.

[warm swallow]

I want it to bounce up when I hit 'E'

[wooden sapphire]

how i animate my 3d models

[warm swallow]

right

[prisma iron]

Hey everyone - looking for some advice. We are having crashes on build with an android device (Quest 2) the crash occurs when making a level change after recording user audio. It works fine in editor and we can't seem to find the issue. Any pointers would be phenomenal. Thanks. Here is the tombstone crash log Timestamp: 2021-08-02 15:40:38-0500 pid: 17713, tid: 17846, name: AudioRecord >>> com.[Studio].[Project] <<< uid: 10070 signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x1 Cause: null pointer dereference r0 00000001 r1 00000000 r2 b5065ca0 r3 00000180 r4 bd07b110 r5 00000180 r6 b5065ca0 r7 c4d57ed4 r8 ef84a260 r9 00000000 r10 00000000 r11 ab6ce0c8 ip c4d57ed4 sp ab6ce050 lr c4d580c4 pc c4d580e0

And the backtrace backtrace: #00 pc 072fb0e0 /data/app/com.[Studio].[Project]--T3k6tYYCR5wE7O5bSAlFw==/lib/arm/libUE4.so (oboe::AudioStreamAAudio::callOnAudioReady(AAudioStreamStruct*, void*, int)+92) (BuildId: a6ad9b3e5ab6a43a038f6f4c3673a148f68d12c4) #01 pc 00013e79 /system/lib/libaaudio.so (aaudio::AudioStream::maybeCallDataCallback(void*, int)+44) (BuildId: 50e7f0033aac3a9cf133de2e08c7d0f2) #02 pc 00015217 /system/lib/libaaudio.so (aaudio::AudioStreamLegacy::processCallbackCommon(int, void*)+318) (BuildId: 50e7f0033aac3a9cf133de2e08c7d0f2) #03 pc 00031015 /system/lib/libaudioclient.so (android::AudioRecord::processAudioBuffer()+788) (BuildId: 3161bca2fda3372c9c3a6d5a71ef78b8) #04 pc 00031957 /system/lib/libaudioclient.so (android::AudioRecord::AudioRecordThread::threadLoop()+122) (BuildId: 3161bca2fda3372c9c3a6d5a71ef78b8) #05 pc 0000e8a9 /system/lib/libutils.so (android::Thread::_threadLoop(void*)+312) (BuildId: 93e563413029b25892ee0148b2d8b3f2) #06 pc 00080661 /system/lib/libandroid_runtime.so (android::AndroidRuntime::javaThreadShell(void*)+84) (BuildId: 8f7945bf3ff3fae739d8b4b88561981c) #07 pc 000a553f /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+20) (BuildId: 7e897e5635aa3ef130be5057e9ba1df0) #08 pc 0005f673 /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30) (BuildId: 7e897e5635aa3ef130be5057e9ba1df0)

[rough blade]

what is the best way to calculate where to aim for a projectile to hit its target? I currently have a construction script that runs a "Predict Projectile Path" and records the drop (from 0,0,0) for every 100 units but it really only works for direct fir weapons. How would indirect work?

[gentle urchin]

indirect as in ?

artillery?

[proper umbra]

hey is this correct? When I start my game the image ends up just being completely white.

[grave relic]

Need your guys help, im thinking of doing a eco system that evolves around the sun, so when the sun is out the flowers bloom and animals are out, and when the sun is down the flowers are down and animals are asleep. This means that almost every entity needs to track the sun and its state. But i dont know how i should do that without it being super heavy on the system. So the help i need is if i should make the sun and its system a actor, gameinstace, gamemode or something else. Thanks for the help in advance! 🙂

[gentle urchin]

sun dispatcher

every entity subscribes to sun time

or sun tick

[grave relic]

Sun dispatcher? 😮

[earnest tangle]

Yeah an event dispatcher on the sun actor or whatever manages the time would be one way, another would be using an interface which has a function that is called when the sun status changes

[clear osprey]

why this casting is always failed?

[earnest tangle]

Did you change your player state class in the game mode or world settings to be the one you're casting into?

[grave relic]

So like i make a sun interface and then when for example the time is 12:00 i could have a function in the sun that sends out to all who inherits from the interface?

[earnest tangle]

Yep

[clear osprey]

yes

[earnest tangle]

How did you determine the cast is failing?

If you changed the state class to the correct type, it should always be the correct type

[clear osprey]

I am sended here directly after stopping the game

[earnest tangle]

What is the error you're getting?

[earnest tangle]

the player controller is invalid judging from the highlighted error

[grave relic]

@earnest tangle Would you say that a interface is better to use than a dispatcher in this situation? 🙂

[earnest tangle]

"accessed none trying to read GetPlayerController ReturnValue" meaning that the returned value from GetPlayerController is None

[earnest tangle]

It doesn't really make much of a difference, they both can be used so it's just a matter of which one you think is simpler to use for your needs

[fervent bramble]

I appear to be getting no result when using the Set Simulate Physics function

[earnest tangle]

the component needs to have collisions enabled

[grave relic]

Thanks for the help 🙂

Might see me writing in here again 😛

[fervent bramble]

I've setup a door basically, I can enable simulate physics and it will swing and everything with collision, however I'm trying to make it so I can right click the door and it will disable the physics simulation unless right clicked again

I tried setting this up by attaching an inputaction to the set simulate physics function while also attached to a flipflop switch to hopefully kind of be a back and forth

[earnest tangle]

it kinda sounds like the problem isn't the set physics, rather it's just not being triggered

only certain things like the player pawn will receive inputs, so if the door isn't the player pawn, it won't receive that

[fervent bramble]

but I can't disable physics on an actor?

[spark steppe]

i think some people had problems with actors which start with physics disabled

so what you could try is set simulate physics to enabled, and disable it in the beginPlay event of that door actor

[rough blade]

yes - artillery

[open crypt]

LogPhysics: Warning: UWorld::FindTeleportSpot called with an actor that is intersecting geometry. Failed to find new location likely due to movement component's 'UpdatedComponent' not being a collider component.

How can I find what thing is calling this? LogPhysics: Warning: UWorld::FindTeleportSpot called with an actor that is intersecting geometry. Failed to find new location likely due to movement component's 'UpdatedComponent' not being a collider component.

[mild jacinth]

does anyone know if its possible to loop anim notify play sound? when i hold w and player is in walk animation then footsteps play only for limited time, then cease to play until i let go of w and press w again

[open crypt]

yes, that's how anim notifies work

[spark steppe]

you would be better of with anim notifies^

[open crypt]

just make an event to play that sound

it's not that you are looping directly

[spark steppe]

they are basicly events that fire on a certain frame of an animation (e.g. when the foot hits the ground)

[mild jacinth]

aight thanks for help

[gentle urchin]

You must calculate launch angle based on distance and initial velocity
Not sure what defines the "best way" to do it but there's some stuff popping up from google

[fervent bramble]

If I do that, I'm no longer able to even grab the door

[spark steppe]

so your grabbing mechanic relies on physics?

[fervent bramble]

yes

Other shit was just god awful

[spark steppe]

then you could set linear/angular damping to a oddly high value while it shouldn't move

[spark steppe]

is there a method which can check if an item is of a specific class, while class is a variable input?

kinda like a cast to check would do, but more dynamic

[gentle urchin]

sounds like just comparing two class inputs ?

not outputing anything usefull tho 😛

[spark steppe]

no, but i found a way i guess (which is Class is Child Of Node)

[gentle urchin]

Hmm... how is it more dynamic than a cast?

Casting a child to a parent would also result the same

[spark steppe]

but i don't know the class yet

[gentle urchin]

Ahhh

Okk

I usually stick to the same parent class for all inventory items

[spark steppe]

they share all the same base class for the usual inventory stuff, but some provide extra functionality and so are childs of the base

[open crypt]

this is still a good IsValid check right?

[spark steppe]

theres a random array item node, just btw

which also provides a bool of it's success story

[gentle urchin]

Doesnt mean its valid tho does it

Bool only cares for a valid index i think

[spark steppe]

yea it provides an index actually (i was wrong)

but still cleaner than the 4 nodes in the screenshot

[gentle urchin]

True

[open crypt]

I keep getting accessed array of 0 in my log

[spark steppe]

the isValid check is okay i guess, idk what the GET node will do when accessing an empty array

is your array empty by chance?

[open crypt]

ah, I'm subtracting

[spark steppe]

yea thats correct

[open crypt]

so, do I want a valid index at 0 as a check first?

[spark steppe]

well, you can check for length > 0, but why all the hassle?

use the get random item node, and check if the output is a valid object and you are done

[open crypt]

what's the random item nodE?

[spark steppe]

pull out from the array variable and search for random array item

[open crypt]

?

[spark steppe]

what unreal version are you on?

[open crypt]

4.25

[spark steppe]

oh, maybe that didn't exist there... sorry then

[open crypt]

what about this then

Now I remember - I think this works

[spark steppe]

uhm, thats not random at all

does the is valid index node exist for the array element?

could put that before your GET node as sanity check

[open crypt]

ugh I'm getting - 1

must not have worked because it crashed

[spark steppe]

what didn't? the last index thing? because it's kinda obvious to fail on an empty array

[open crypt]

the only other reference for that is here -

so this is fine at least

[spark steppe]

idk what you are trying to do, but that makes no sense to me

[open crypt]

I just want a random one of that array lol

never try to program when you're sleep deprived kids

[spark steppe]

your first screenshot wasn't that bad

it just missed the valid index check for the random index that you generated

before getting an object of the array from that index

[spark steppe]

yea no, wait

lemme do your homework quick 😛

[open crypt]

hah, I wish that was all it was

[spark steppe]

just ignore the name of my array, it's what i had right there

on the other hand, i'm never sure with those pure methods actually... it might not do exactly what was intended but still work ;>

it might get a random int twice, but whatever... if one succeed, the other will too...

[tight schooner]

Just noticed BP components have no construction script. Gonna call a function via the host's construction script but lmk if there's a Better Way ™

[open crypt]

Thanks for your help - now can I have another lol 🙂

LogPhys```

Even if I could find the blueprint that'd be swell

[haughty wing]

Hi guys so i'm pretty basic in terms of UE4 and coding in general. I tend to not use this discord since my questions are stupid and i'm even worse at wording them haha. I'm stuck so i'll try anyway.

I'm trying to create a master camera BP which will allow me to change settings on multiple camera actors on my level (Same BP of camera just multiple instances of it in world outliner) I want to get a reference of all the cameras i have on the master camera BP and am struggling on how to get it done without doing it one by one.

I got as far as doing a get all actors of class and then a loop for each array element to try and save it as a variable on the master camera BP, but ofc saving them all as one variable isn't helpful. Is there a better way of doing this? My aim is to have the ability to lerp between the multiple cameras when i click a UI element on the HUD i have. (I can do this part but stuck at the start as always)

[dawn gazelle]

You're placing your camera master in the level, right?

And your "camera actors" are all placed in manually as well?

[haughty wing]

Yes

[dawn gazelle]

Ok so what you can do is make the array variable on the camera manager "expose on spawn" and "instance editable"

Then you can add the cameras to the array on your camera master through the details panel in the viewport:

[haughty wing]

[dawn gazelle]

If you want to reference the cameras by name, you can add tags to them.

Or better yet, make a map variable:

[haughty wing]

Ok

Thanks a bunch!

[blissful gull]

how do you get stuff to overlap on spawn?

im doing overlap checks on begin play but it doesnt seem to work

[open crypt]

there's an "is overlapping actor"

you can us

@blissful gull use this at begin play or spawn

[woeful pelican]

Thought I had, say that I wanted to make a pawn where the direction of it's weapon for instance is facing where the cursor is. Say that I also want to include controller support and have the weapon face the direction a joystick is being held at (or was last held at). How would one implement these multiple control schemes?

[rough blade]

When looking for the angle to fire a projectile at i came across this equation
float getAngle(){
float gravity = 9.81f;
float angle = 0.5f*(Mathf.Asin ((gravity * distance) / (speedspeed)));
return angleMathf.Rad2Deg;
it was built for unity but i tried it in unreal anyways and it doesnt seem to work. Does anyone know if this is the equation to use?

[fiery glen]

perhaps check the math behind this node https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Game/PredictProjectilePathByObjectTyp-/