blueprint

[umbral ginkgo]

Why cant I call an interface event from the third person blueprint?

[faint pasture]

Or leave it as int, you want int for tile games

"move 3 tiles away" would be best as an int unless there's such a thing as moving half a tile in gameplay

[crimson saddle]

should i multiply by the grid size?

heres where i am

[faint pasture]

Why not have all those work on vectors

Does Z ever change for your grid?

[crimson saddle]

no

[faint pasture]

Then have them all operate on vectors and have the rounding (which is conversion to hex tile space) convert to int 2vector

[crimson saddle]

what do i do after i have the int

[crimson saddle]

either way I round to nearest int, after that what do I do with grid size?

[faint pasture]

Multiply back out to convert back to world space.

[gilded venture]

how can I disable all post-processing via blueprints?

[crimson saddle]

so is this correct?

[faint pasture]

@crimson saddle divide by grid before rounding

Eventually you'll want to bake the grid into your conversions

[crimson saddle]

awesome it works

[primal smelt]

Just looking for some help understanding line traces. If I have, say a 20x20x20cm box collision and a line trace that starts bang on the centre and ends Z -1cm (basically just well within the box collision) - why does this hit? I know this is defined by trace channel rather than collision presets, but doesn't the line trace still use the collision information to check the trace channel of the actor?

[crimson saddle]

thank you so much for the instructions

[faint pasture]

@crimson saddle eventually you'll want to include grid size in your World to Hex and Hex to World functions, so they can work like

HexToWorld(int 3, int 1, float 100.0) -> 350,86.6,0.0

You wouldn't say the king in chess is at position 300.0, 200.0, 0.0 you'd say he's at 3,2

[faint sand]

I bought some animation packs and am trying to retarget, but the skeleton I want to remap to isnt in the list. the animations use the UE skeleton, so its a 1:1 remap, but i cant even find it to select it

both source and target are in the /Content folder.. so i dont know why i cant see it

[austere copper]

Hey yall is there anyway to set the mouse cursor as a projectile homing target? It seems to only take a "scene component weak object"

[gentle urchin]

Does it hit with complex collision checked?

[maiden wadi]

Possibly. Though not directly. What you might be looking to do is have a scene component that is set to the hit location under mouse on tick. Projectile can be set to home to that object.

[austere copper]

Okey doke that makes sense. I'll give it a shot, thanks

[flat coral]

What's the right variable type to represent an RGB+A color in a BP, so that I can set it in child BPs in a useful way

I tried Vector4 but this isn't as helpful as I hoped

[maiden wadi]

I usually use LinearColor. Color can work too though.

[flat coral]

Perfect, thank you!

[high yew]

how do I use the look at function

[odd ember]

two locations

[high yew]

the big one

the look at function

not the find look at rotation

[soft peak]

can i "remove" animation certain bones?

[old aspen]

is there any good way to filter the Content browser by assets "Native parent class"

[earnest tangle]

I recall there might be some filter for it similar to the implementsinterface filter

NativeParentClass=ClassName maybe

[flat coral]

Two questions:

1. Why can't you add a set to a set in UE?
2. Why is Set.ToArray an impure function? That scares me it's got some sneaky side effects

[earnest tangle]

1. Nested arrays, sets, etc. just aren't supported in BP's
2. Probably a performance thing. If you connect a pure node's return value to multiple pins, the pure node runs <number of connections> times. Impure nodes only run once

workaround for nested things is to create a struct which contains another set and nest those

[flat coral]

I don't mean nesting it, the idea would be to take all items from Set1 and add them to Set2, same as the array is doing in that example

[earnest tangle]

ahh I see - yeah not sure, did you try looking if the function is instead called merge or something?

[flat coral]

There IS Union which I guess is what I want. Also an impure function though, so the suspicion continues

[earnest tangle]

Probably same reason again :)

[old aspen]

Hey, good hunch! NativeParentClass= seems to be what I was looking for

[icy dragon]

Are matrices exclusive to C++ realm (FMatrix), and is it impossible to do matrices in BP?

[umbral ginkgo]

Can you not send interface messages from the third person character blueprint?

[earnest tangle]

I think the type might exist in BP's but I think none of the functions that operate on them are exposed

[earnest tangle]

Sure you can

[versed sun]

when i need an array of arrays , i make a Struct with an array in it , then make an array of that struct

dunno if you can do that with maps

[brazen merlin]

I have a struct of maps

[umbral ginkgo]

For some reason it didnt provide the options cause of context sensitive

[earnest tangle]

Yeah sometimes it's bit iffy. May work better if you drag from an appropriate object first

[umbral ginkgo]

What node can you use to spawn characters?

[earnest tangle]

Spawn Actor

[umbral ginkgo]

It doesnt seem to work

[lusty wave]

I have a blueprint with a UStaticMeshComponent in it. The static mesh is configured with a custom material. In packaged games, that material is gone and set back to WorldGridMaterial. I have confirmed the relevant material+textures are in the PAK file. But by the time BeginPlay is called on the BP actor, the material of the static mesh is not correct. What could cause the blueprint saved values to change during packaging?

[umbral ginkgo]

I thoguht it was a class problem but appaarently not

[flat coral]

Might have to ask in #packaging , we're dumbshits over here

[flat coral]

First thing's first put a breakpoint on SpawnActor and make sure it's getting called. If it still doesn't work, show the code we'll take a look

BTW is there any way to override comparison/equality operators in Blueprints? Like implementing Comparable in Java?

[mild ibex]

idk if this is right place to ask, but, im trying to use the oculus quest 2 to control the movement of a camera, ive tried a few things but cant get it to work quite right, ive been able to get it working where it moves in the cardinal directions, but it doesnt move where the camera is looking which is slight problem
So the Forward input is always scene forward, not based on the actual cine camera actor
The Better movement graph isnt working but i believe that is the solution im looking for

[chilly geyser]

How do you get a reference to the level blueprint?

[dawn gazelle]

You don't.

[foggy escarp]

Usually, you would want to avoid needing to do this in the first place

anything in the level blueprint should only be specific to that level and world events.

[dawn gazelle]

You could create your own comparison functions in a function library and just use those instead of what's available.

[chilly geyser]

Well I need to count the number of blueprints on a different blueprint. Thought that level blueprint would be the best place to do it.

[flat coral]

Not if I want them to replace the comparisons used by Set 😉

[flat coral]

Everyone who said don't do it is probably right.

(Or I bet you can make a variable that stores a ref to a level BP in the PlayerController or something, and have the Level BP's BeginPlay node populate that variable with itself)

Note that I haven't TRIED the above myself. I'm crazy, but I'm not that crazy

[foggy escarp]

There are a lot of use cases where the level blueprint seems like a good "midground" to manage data between other actors in the level. A better method would be to instead create sort of data object that's placed in the world.
This is leading in your direction @flat coral.

[chilly geyser]

I'm not really using a player controller, but I guess I can just store the blueprints there instead of level blueprint

[flat coral]

there's also gamestate?

[chilly geyser]

.

Didnt work on game state

Ill just use player controller to store it

[foggy escarp]

What is it your trying to accomplish?

[chilly geyser]

I need the game to be able to count all the dice that have landed

I was planning on using ++ counter

until it equals total dice of type

but I cant store it in itself

Because its not aware of all the other ones

[foggy escarp]

And you need something to manage the dice rolling data?

[chilly geyser]

Yeah basically.

[foggy escarp]

Could you just create a separate data actor to do it?

[chilly geyser]

Yeah. But I figured sending it to@the level blueprint would be easier to manage

[foggy escarp]

If you had a separate actor to manage all the dice, it should be easy to create events and call other events from it.

this would be easy to organize.

Also binding events would be a good choice.

[fervent temple]

spawning a fireball projectile
collides with ai fine
problem is that
it doesnt damage the ai

code

i should add the ai is damaged perfectly fine by the sword bp i made

[flat coral]

As a general rule, every time you CAN keep things separate, you should do it. No class ever became unworkable, impossible to debug, or stalled development because it was too small or simple

It is always easy to combine things later, but several of the toughest projects I've ever done were splitting up monoliths

[chilly geyser]

Okay, Thanks for the TIP, that makes figuring out how to do this harder though

[foggy escarp]

If A dice has a event for "Landed", then you can increment a variable on the managing bp.

[chilly geyser]

Yeah that's was what my solution was going to be.

[dawn gazelle]

Perhaps use the "Other Actor" on the event rather than using the sweep result as your input into the apply damage node?

[fervent temple]

still no

[faint pasture]

@fervent temple does that event fire?

[fervent temple]

yeah the string at the end prints

hold on lemme send the updated code

[faint pasture]

Don't do that

Don't run wires all over the place

[umbral ginkgo]

Why doesn't the ai move to node work on spawned in actors?

[fervent temple]

ik ill clean it up after i fix it

[faint pasture]

It might work in this example but it's gross and can be undefined. Anyway, debug print all the inputs to your damage interface call to make sure they're what you expect them to be.

[fervent temple]

oh everything is perfect i think

it spawns fine

and the collision works

my only problem is the damage not triggering

[faint pasture]

Just keep checking every step in the chain until you find where it's broken.

[normal stream]

just a quick sanity check question- I haven't actually started making this yet, just planning.

• I intend for there to be a variable, a value that numerous pawn-spawning actors will refer to.
• So far , my plan is for this variable to be controlled by the player, so it listens for an input event.
• Since this variable is going to be used in every level or instance of the spawners i intend to make, it stands to reason that it should be housed in the Game Mode blueprint.
  -- As part of that, i will have to make that variable public, right?
  -- And then I'll have to use the Cast to Actor node to send the variable's current value to the various listening actors throughout the Level and Level BP

[tawdry surge]

Instead of casting to actor, I'd either use an interface or have the various actors inherit from a common base class that references the gamemode and just retrieve the variable as needed in the actors logic

[normal stream]

oh, nice

thanks!

[lucid lynx]

How do you add arguments to the Format Text node? There's no add pin like in other nodes.

[pale blade]

You can take a look at this guy, he has really good tutorials
https://www.youtube.com/watch?v=TmJ3rSXacbE

But basically like this: {var}

[lucid lynx]

Thank you. To answer my own question you can't add pins until the Format pin is connected to something.

[normal stream]

https://blueprintue.com/blueprint/03qivz92/ so i

am trying to just get something to register inputs, and it's not doing anything. they keys ive assigned to those input events aren't generating the expected results; my WASD movement still works though

[still trellis]

how do you guys typically check line of sight? obviously i can do a line trace from camera to actor location but that only succeeds if the center/root of the actor is in line of sight, is there a good way to check if any part of a given actor is in line of sight?

[brazen merlin]

you might need to perform an array of line traces at each bone/collider location, and break if one is unobscured

[dusk dust]

how can I get the transform/change the location of either the "create grid mesh" or the create mesh section?

I know 2 ways to do this, either move the entire procedural mesh component or to loop through every vertice and apply an offset, both of which I dont want to do

[spark steppe]

or do a sphere trace, which is a bit more expensive but gives you a larger area that is checked

[brazen merlin]

but wouldn't that hit anything in its radius? i think the idea is to see if part of a character can be seen behind a corner or cover

[spark steppe]

yea

maybe use or look at AI sensing

they may have a solution which works as expected

[remote meteor]

I use multi sphere trace then individual line trace to each target for that

Slightly more espensive but i think its more straight forward and has more control

[still trellis]

do you line trace to the actual impact location, or just to the target's center?

[remote meteor]

Target center then i check for what is blocking

[still trellis]

my end goal is actually to create basically a "cone trace" and find all the enemies in a cone that are in line of sight, but i'm assuming i need to use sphere and dot product for that

[remote meteor]

Cone trace you can just calculate

The relative rotation of 2 targets

More like a pie trace actually

[still trellis]

yeah i know how i'd calculate it, i just don't know how to check for if the given target is actually visible. i dont want to not register somebody because they're halfway behind a wall you know

[brazen merlin]

to what Ben said, this is essentially what AiPawnSensing does already, it will spot it's target if any part of that target is exposed...

[still trellis]

yeah i guess i'll look at what the ai code does

[remote meteor]

Hm yeah if its for sensing

[still trellis]

any idea where that is in the engine?

[remote meteor]

Ai sense does the job

If its like for damage area

[still trellis]

well i'd be using it for players but i could certainly steal the code

[remote meteor]

After that you line trace for any walls

[brazen merlin]

sounds like you do want to detect if someone is halfway behind a wall

[spark steppe]

you can still use the sense on players

[still trellis]

if someone is 90% behind a wall but i can see a little piece of them, i want that to count as a hit

[brazen merlin]

yeah, so check against all bones

or else AiPerception

[spark steppe]

https://github.com/EpicGames/UnrealEngine/blob/4.27/Engine/Source/Runtime/AIModule/Private/Perception/AISense_Sight.cpp

here's the AISense code

but it seems like they do a line trace

https://github.com/EpicGames/UnrealEngine/blob/1e5926084bbf386041103735ed6c2ab27bc1c1ee/Engine/Source/Runtime/AIModule/Private/AIHelpers.cpp#L25

nvm

[still trellis]

lol the diagram drawn in comments

[spark steppe]

they do a bunch of checks

yea 😄

[gentle urchin]

Love those gems lol

[spark steppe]

i would just use AI Perception honestly

instead of trying to rebuild it

you can chose which senses it uses, and you can disable it when you don't need it

it's highly configurable and you probably wont come up with a better solution

[still trellis]

thanks for the links ill see what i can do

[spark steppe]

that code is luckily also pretty well commented

[brazen merlin]

rare indeed

i hope the ascii visuals catch on 😄

[gentle urchin]

I've seen it a couple of times already 😛

[sturdy garnet]

Rn my gun shoots line traces and they do damage which is cool but how do I get my gun to shoot stuff like destiny 2 for example a solar hc has a orange trail

[faint pasture]

Projectile, look at the first person example project

[fiery glen]

I think they want an instant linetraced hit with a trail

[brazen merlin]

beam emitter?

[fiery glen]

stretched between the hit and the gun, or even a mesh

[faint pasture]

Why is this codebase so fucking convoluted, I'm trying to track down where vision checking is actaully done and can't find it

This is as close as I got, can't find any implementations so idk...
https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/AIModule/Classes/Perception/AISightTargetInterface.h

[faint pasture]

Trace then lerp a trail particle or whatever

[mighty linden]

hello guys ! So im a blueprint noob here follwing a long this tutorial , how could i lock this camera from rotating my character in the hang animation. I want to have the over the shoulder look but as you know when i turn the mouse the player moves as well

just trying to figure how to problem solve that

[brazen merlin]

im heading to bed, but its one of those checkboxes on the character or cmc - orient control rotation or something along those lines which "unhooks" camera from player direction

[mighty linden]

okay thanks ! I'll look into it 🙂

[proper umbra]

Anybody know any good guides for a game where players take a turn one after the other? i.e. a game like hearthstone

[mighty linden]

got it !!

So I just want to disable that camera yaw once i enter the hang

here is the code for the hang

[gentle urchin]

MoteToActor is a node

If you're using MoveToLocation..

[zealous fog]

Show your blueprint otherwise we can't know what you're doing wrong

[gentle urchin]

Looks like something you'd need to update frequently

Probably not as often as tick _(depends on criteria) but atleast on a timer of some generic value

[tepid otter]

Hey guys, I am currently working on a VR project, but I want to be able to navigate through the scene without a VR headset as well. Therefore I startet with the VR template and copied the movement logic from the first person template into that (just the WASD movement part). That does work in theory (the MoveForward function gets called), however the character is not moving in the scene. I noticed that it is not even falling to the ground even though gravity is enabled. Any idea why that happens?

Also I noticed that while the VRCharacter (from the VR template) spawns a camera itself, there is the default CameraManager that spawns a camera as well that is not used. Can/should I turn that off (somehow)?

[wet grotto]

Hello, I want to remove a widget when I touch the screen but could not figure out how I can do that.

When I select remove all widgets it is working but I want to select a specific one.

[gentle urchin]

No, like a Timer

[fair zealot]

you have to go in the widget bp and get event on clicked on the button and remove from viewport

[final kiln]

Good morning, I'm trying to make a level system where instead of the level being a number, it will be a name that I will choose, can anyone tell me how to do this ?

[gentle urchin]

do an array of names

use level as index

or a TMap of names

or a datatable of names

[main lake]

Is it possible to change the "Time" property on the "Set Timer by Event" node whilte it's running ? If so how ?

Like I need the timer to be 1 sec but later to be 0.5 between each iteration and changing the variable linked to the "Time" property doesn't do anything

[gentle urchin]

you must call the SetTimerbyEvent again

[main lake]

So I need to clear the other one first right ?

[gentle urchin]

I would clear it

normally

[main lake]

like calling it again will clear the old one ?

[gentle urchin]

I believe so, but i usually clear them for good measure x)

[main lake]

could you show how would you clear it with a screenshot of the graph please ?

[main lake]

Thank you

[boreal barn]

hey yall, question: how do I find what's reacting to this call delegate?

find references doesn't seem to help

[gentle urchin]

isnt that interface message?

[boreal barn]

IDK man, that's what the tooltip calls it

[zealous fog]

What did you connect to the target

[gentle urchin]

yeah, the target is who gets it

[zealous fog]

I love how you provide 2 screenshot ls but it still doesn't show what you're doing lol

[gentle urchin]

I assumed he was trying to hide it

[boreal barn]

well I don't think it's relevant... it's just a newbie question on how to use the interface

[zealous fog]

It's always relevant what you're trying to do

[gentle urchin]

context is always relevant indeed

[boreal barn]

I'm trying to debug stuff and I've come to a node that I have no idea who's listening to

[gentle urchin]

easy answer is whoever you plug in as target is the reciever of it.

[zealous fog]

Fair but we can't even see what node it is, where you're placing it etc.

That can all impact how certain things work in ue4

[boreal barn]

waitasec, I thought that node acted as a broadcast

[zealous fog]

Calling a message like that in a BT task for example, you won't be able to pass on variables

[boreal barn]

so the call is only done on the target actor?

[gentle urchin]

its not a mutlicast delegate afaik

[boreal barn]

ooooooooooooooooooooooooooooooooooooooooooh

[gentle urchin]

otherwise target would not be needed

[boreal barn]

ok, thanks!

[zealous fog]

Look into event dispatchers

It can set off events in multiple actors

[boreal barn]

yup its here

[boreal barn]

AH

how do I find them?

how do I find who binded to this event?

(bound? bounded? sorry, second language)

[feral ice]

if i rotate an actor like this will the up vector be straight up or at the side like a normal vector

[gentle urchin]

Objects up will rotate yes

Unless you locally rotate ,

And not rotate the actor

[feral ice]

ok

[zealous fog]

I dont know because you're not explaining what's happening and what should be happening. Is something being set off by something and you wanna know why or what?

Or do you just generally wanna know how you find the bound actors

[sullen saffron]

Is this video outdated?
I ask because i fallowed along with it and i’ve checked, rechecked, and checked my work over and over and over again, but my Health(none of my bars) are filling.

https://m.youtube.com/watch?v=pu56eOqtlQ0&list=PLL0cLF8gjBpqA8DcrhL_O9kD4jsUqhDR6&index=3

[boreal barn]

this, I just want to find the bound actors

[zealous fog]

I thibk you need C++ for that

https://docs.unrealengine.com/4.27/en-US/API/Runtime/Core/UObject/TMulticastScriptDelegate/

[boreal barn]

how? I have no problem with working in cpp, but the event is blueprint only afaik

(I mean that specific event I need to follow up on)

you mean that there's no way to track down bindings in blueprints?

[zealous fog]

I mean if you want yo know at runtime

Otherwise you can just use the search function for the bind nodes

[boreal barn]

AHA! this seems like the droid I'm looking for!

unless you mean this, which only looks in the same actor afaik

[icy dragon]

Well, DevSquad tutorials aren't that good to begin with, so yeah.

[sullen saffron]

Thanks. Who do you suggest i fallow?

[boreal barn]

WHOHOOO

[boreal barn]

THANK YOUUUU

[zealous fog]

Ctrl shift f

[white jungle]

Hi i'm having issue with the variable, in sidescroller(3d).
So i've created a blueprint, that tracks my mouseXY, that will be used to rotate head of actor.
So everything is working fine, but i can't get my variable to transform(modify) bone of head.

I mean, i can't seem to pull out the info from the variable, from the blueprint to animation

the variable in Blueprint is giving me exact degrees that rotator(variable) has, so i know it works.

i just don't understand how to do it, not that i did it

[zealous fog]

If you wanna know the shortcut for find in all BPs

[boreal barn]

IT WORKS

[icy dragon]

Take the beginner courses in Unreal Online Learning instead.

https://www.unrealengine.com/en-US/onlinelearning-courses

[zealous fog]

You're gonna want to update the variable in the BP anim event graph, so you set it every time the update animation event is called, you can then use it in the animgraph to set the characters head rotation

[sullen saffron]

I probably should. It will be a lot of review, but i clearly am missing some kind of basic functional if i cant even get a health bar to work right.

[zealous fog]

If you want to go for healthbar

Look for the course your first hour with UMG

It will go over healthbar main menu pause menu

@sullen saffron

[sullen saffron]

Ok. Thanks. Is that a youtube video or on Unreal’s website?

[white jungle]

But how do i set Variables Value without getting error, "accessed none"?

[odd ember]

show code

[zealous fog]

It's on that learning website

[sullen saffron]

Ok. Thanks. 👍🏻

[zealous fog]

@white jungle are you debugging?

[winged grail]

does anybody know a good weapon tutorial? which isnt to komplex ?

[odd ember]

what's your issue?

[zealous fog]

If you have the preview character selected as the debug object and you play the game it can cause issues

[white jungle]

i'm only checking for values using print

[zealous fog]

So yes

Try selecting the actor in the level as the debug object

See if that fixes the error

It sometimes goes back to the preview model automatically just so you know

[white jungle]

Basically how do i place the "Location" and "Lookatheadrotation" variables, to get them working without getting error log

i would need to create new event?

[odd ember]

your issue is that you're using GetPlayerController

when there is a node specific to the animBP

called TryGetPawnOwner

that does the same

[white jungle]

so you're saying i can just click the "Return Value" on TryToGetPawnOwner And put it inside GetMousePos and ConvertSccreen?

[odd ember]

have you tried?

[white jungle]

Not compatible :<

[zealous fog]

Did you try my fix from before?

[white jungle]

not yet (i literally started ue4 like yesterday)

[zealous fog]

🤔

[odd ember]

you'll need to cast it

[zealous fog]

Alright its in the top row, om the right of the play button you( you might need to press on the arrows for more buttons), you can select the debug object, and then select one of the actors in your map, you can then set that one as your debug object. I had this issues a lot the past week and that solved it

[white jungle]

Ok, the rotation is working, thanks a lot.

[white jungle]

Thank you for the info(it's asking for that what you've just said to me), i'll get to understand how to do it now. Thank you for the patience

[zealous fog]

No worries

[slim musk]

So, guys, i need to do this bp that allow me to pick up and object, drag it around, and on release if it is on a certain position(collide with a box or smth) it snap on it, if not it will return to the starting position.
Now i did the pick up and the drag part(not sure if it's the best way) but i cannot think of a way to snap the object dragged around in the right part, can anyone help me? (Im fairly new to unreal so i dont know that much and sorry for the bad english)

This is the part where i drag the object around

[stable osprey]

hey, can anyone help sorta translate this to a 2D platformer https://youtu.be/VYuBIFSv7KM i've tried but i'm kinda stuck

[icy dragon]

Ideally you'd want to either use replication feature or find a way to record input every time interval

[chilly geyser]

Half of the time my blueprint skips this step, and half the time it works, can anyone tell me why?

[icy dragon]

Have you confirmed it's actually out of order with breakpoints?

[chilly geyser]

What do you mean by out of order and breakpoints?

[icy dragon]

That question confirms you haven't tested it yet.
Right click on the Branch node and put a breakpoint on it. This will pause the game when the BP hits that node, and useful for sanity check purposes

[chilly geyser]

oh cool! thanks

didnt know you could do that

[icy dragon]

Alternatively you can select the node and press F9 to immediately put breakpoint on it

[chilly geyser]

Yeah still no luck

[icy dragon]

Did the branch node got executed?

[main lake]

I'm trying to convert a single value called "Timer" into a timer displaying Minutes + Hours+ Days (Minutes In Game = Seconds IRL, Hours IG = Minutes IRL, Days = 24 Hours IG) but I'm facing a problem with modulo, I'm doing "Timer" % 60 but if I add 1 to the Hours variable when the modulo is equal to 0 as 60%60 = 0 and 0%60 is also equal to 0, I will start at Hours being 1 instead of 0 because of this modulo, how do I solve this please ?

[chilly geyser]

i put an event tick with a print string, i think i found the problem

Thanks for the breakpoint knowledge! @icy dragon

[tawdry surge]

@main lake have you tried using the built-in timespan struct

[earnest tangle]

^Timespan and Datetime are great for representing ingame date and time values as well

[main lake]

What does the timespan struct do ?

[tawdry surge]

Handles converting seconds, mins, hours, days, etc.. so pluging gametime into the seconds input will immediately give you a real-time timer. Increment mins instead and now its game time

[gentle urchin]

Exactly what you want 😄

[main lake]

this doesn't work

[earnest tangle]

It also makes it trivial to do most kinds of date math, eg. adding/subtracting minutes, days or such

[main lake]

I don't know why it doesn't work

nevermind it works perfectly

except 1 thing, I want it to show 2 numerical values each time, instead of having 3:00 I want it to be 03:00, how do I do that ?

[maiden wadi]

GetSeconds, GetMinutes, GetHours, format them as you like using IntegerToText.

[main lake]

Like do I have to do if statements to check if the value is < 10 then append a 0 to it before changing the text on the screen or again there's a special node formatting that for me ? 🙂

[maiden wadi]

I believe IntegerToText will take care of that for you. Just change it from 1 to 2.

If you put 2 as a value there, it'll return "02"

[main lake]

But I'm using the "Astimespan" node so it's not an integer it returns a TimeSpan Structure

[maiden wadi]

Use these.

It'll get ugly in your graph. Welcome to UI programming. 😄

[main lake]

x)

It's better to have these nodes otherwise it would be uglier with alot of branches and stuff like that x)

It works perfectly 😄 Thank you all of you @maiden wadi @tawdry surge @earnest tangle @gentle urchin @faint pasture Finally my timer is working after 2 weeks of struggle 😄

[real notch]

I think I enabled something on my bleuprint, when I start the game it automatically goes in debug mode. There are no break points? I'm sure there's one small option I put on somewhere that did this 😬

[real notch]

Well well, restarted the editor and it's fine now. I blame gremlins

[neon jolt]

@hexed cloak you need to remove all VOIP talkers first add the new one to be able to get attenuation on the last player

[gentle urchin]

Gremlins indeed !

[tawdry surge]

Short answer is render target

[icy dragon]

Which works for prototyping, but holy smokes, do Canvas RT took up a huge chunk of performance

Granted (I think) Source uses forward rendering, thus their render targets cheaper to render.

Unreal Engine 4 had terrible performances when it comes to render targets + scene capture + Canvas

[tawdry surge]

Shouldn't be too bad if you only have a maximum of two ever in the scene. I wouldn't try to make a house of mirrors that way tho

[hexed cloak]

Every time a player joins you recreate every voip talker for every client?

[vital aspen]

I been watching a lot of tutorials on making slots. I see that some add a image to the widget and some don't. It there a reason for adding an image to the widget for the players slots.

[sturdy herald]

Hello. How can i make a circular movement with 3 points? First point is the start location (the position of actor in the beginning), 2nd point is a helper point on the circle (to calculate is) and 3rd point is the end location.

[icy dragon]

Mainly as a filler, so that the widget didn't just fill zero space.

[vital aspen]

so that's why I been getting 0 items and an icon added to the players slots. Thanks

[sturdy herald]

i dont think its better. I usually dont use space because when calling it There will be automatically a space.

[gentle urchin]

Camelcase handles the spacing :)

[sturdy herald]

i mean matter, not better, mistype. So just use how u want.

[sturdy herald]

Anyone has ideas to make a circular movement like this?

[normal stream]

there's a Rotating Movement Component that might be a good place to start? I don't know about how to execute the calculation you're intending

[tawdry surge]

What are you moving in a circle?

[charred berry]

I'm unable to delete, accidentally pasted data in 3rd person character component section , is this a bug or if not how do I get ue4 to actually delete this content that shouldn't be there ?

[vital aspen]

@icy dragon Thanks you again. It's doing it again. I added an image to my playerslot and this is what I get in game.

it seems to add 1 extra to the slot and a count of 0.

[sturdy herald]

i'Ll check, thanks

[vital aspen]

any ideas from you would help

[sturdy herald]

i want to move a static mesh

[tawdry surge]

You can just off set the mesh from the default scene root and rotate the root

Or use a spline component and move it along whatever path you need it to

[sturdy herald]

How can i determine the center of circle?

A little more detail:

[tawdry surge]

If you use the scene root then it is the center

[sturdy herald]

The start location is the location of mesh in the beginning, but the end location is determined by the player with the axial rotation. These are not same at every movement.

[tawdry surge]

Got to the viewport tab inside the blueprint for the mesh you want to move.
Add or select the static mesh component and move it away from the scene root.
Over in the event graph you can set the rotation of the scene root and the mesh will follow.
How much it turns is up to you

[sturdy herald]

thanks, i'll try this out

[sturdy herald]

for moving away the static mesh component need to know the Radius of the circle, but i dont have that.

[tawdry surge]

It's how far from the scene root you moved the mesh component. It'll tell you the relative location in the details panel

[sturdy herald]

yeah, but this is not a constant value.

[tawdry surge]

You can get it at runtime using Distance to or get relative location nodes

[gentle urchin]

You want circular movement ?

Theres a rotate vector around axis if it has not been suggested yet

Does exactly what you need

Not sure what the intended behaviour is for the player with the axial rotation but oh well

Like.. is the mesh supposed to rotate towards the player in sole circular fashion?

[tawdry surge]

Nah he wants the player to beable to influence how far along a circular movement track a static mesh moves

I was thinking just pass the axis input and add that to the rotation of the default scene root.

[gentle urchin]

Hmm yeah that'd probably do the trick !

Guess i didnt properly understand it 😅

The desired outcome, that is

[tawdry surge]

I think your suggestion would work too. I believe you could set up an orbit around a point and use that to set the location as well

[cold cobalt]

I'm not sure if this belongs here or somewhere else, but does it make more sense to have a grenade's mesh as a skeletal mesh or a static mesh?

[icy dragon]

Thrown grenade can be a static mesh component in a projectile actor

[sturdy herald]

Its hard to explain what i want and my english is not the best for that, but here is a video what shows what i want.
Basically i teach to the robot the start point, end point and an aux helper point (idk why i called it axial before this) and the with some calculation the the robot with ik moving at circular path (this path can be anywhere, not only in xy plane or something this basic).
The problem rotate vector around axis is that the Axis is the location vector from the center of circle. But i dont know this circle and i dont know how to get the position of center with 3 points on circle, without knowing the radius.
Same goes for the suggestion of moving the static mesh away from the root: the distance between root and mesh is changed every time i want a circular movement (depending where i determine this 3 points), and this distance is the radius of circle which is not know and i dont know how to calculate it.
I appriciate the advices @tawdry surge and @gentle urchin.
https://www.youtube.com/watch?v=gTov9oHYEwo

[gentle urchin]

https://math.stackexchange.com/questions/325482/calculating-a-circles-radius-from-two-known-points-on-its-circumference

[buoyant marsh]

guys, any ideas where i could start from !, if i want to make my player move and update his location depend on real live location like google maps !

[tawdry surge]

Look into cesium plugin. They use longitude and latitude for positioning

[cold cobalt]

Oops realized I'd posted this to the wrong channel.

So when using the PMC, I've enabled Rotation Follows Velocity but the mesh for the projectile is still just sitting straight up the whole time... What else do I need to enable here to get it to actually rotate like a normal projectile would haha?

[coral sand]

does this mean that the event dispatcher is declared but not defined?

[brazen merlin]

other way around if you want to get into semantics - you've defined it, but that is not a call for it

[coral sand]

of course it's not a call for it

but the function does nothing

it's not defined. right?

[brazen merlin]

you can add inputs, but it is not like a function

[coral sand]

if i called it from somewhere else, nothing would happen

[coral sand]

hmm?

[brazen merlin]

it passes any inputs and its event trigger when it is called, where it gets called receives the event

you might need to revisit dispatchers and how they work - blueprint communication

[coral sand]

no I mean for all intents and purposes it's a function

that gets interpreted/executed no?

ok fine, it's defined to do nothing?

[brazen merlin]

these are all questions about the functionality of how event dispatchers work

if you've never setup them up before, then they are a bit hard to grasp, keep learning

[coral sand]

...

[brazen merlin]

https://www.youtube.com/watch?v=EM_HYqQdToE

[maiden wadi]

@coral sand In BP, there is no such thing as a function being declared and not defined. Every BP function created automatically has a definition. That screen you have up for the dispatcher is misleading as a Dispatcher is not actually a "function" as much as a property. The property itself allows other objects to register to it, which allows it to run those bound functions when the "Call" function of the Dispatcher is ran.

[gentle urchin]

one could think of it as a list. Whoever is signed onto the list at the time of the broadcast(the call) will be notified.

The "who" in this context is typically functions in other actors and/or objects

[high yew]

why is my physics constraint freezing when I hold it still and un freezing when I let it go?

[deep geyser]

I've been looking around the new Stack o Bot content for UE5 and I have an issue where there is a bunch of BP interfaces that are used all over the place. Is the reference viewer the only way of knowing what uses the BP interface function calls?

[gentle urchin]

Hard to say without seeing code. @high yew

[high yew]

ok

one sec

[gentle urchin]

Also might me more #legacy-physics

[deep geyser]

whatever you change in physics when picking up, just undo it when releasing the box

[high yew]

do you know stuff about it though??

[gentle urchin]

Not really

My comment was mostly a general advice

Not seeing code makes anyones help just guesswork..

[high yew]

do you want to see the code

[brazen merlin]

its in #legacy-physics if you do

[coral sand]

fine but

that delegate has no other functions added to it

[brazen merlin]

The dispatcher isnt the holder of the function

[coral sand]

I understand

[brazen merlin]

Say you have a switch with a dispatcher TurnOn. When the player uses the switch it calls TurnOn and whatever is plugged into the call is the receiver of that event call. The reciever could be a light which has a binding to this dispatcher so it can turn on. The receiver could be a door that has a binding to this dispatcher so it can unlock or open. The reciever could be a train track that has a binding to this dispatcher so it can switch tracks. Whatver the receiver is, thats where the logic to execute the dispatcher happens. The call is just a call to the target.

[coral sand]

i understand what it is. Why does that graph exist then?

[brazen merlin]

To show you its setup

You can pass inputs through dispatchers

Such as a float or another actor reference

[coral sand]

ok how do i add those in that graph

[brazen merlin]

Top of the details for the ED

[coral sand]

thanks

[dawn gazelle]

So you have something that goes from 0 to 1 and you have another thing that goes from 0 to 0.3 and you want the thing that goes from 0 to 0.3 to go from 0 to 0.3 based on the value of the thing that goes from 0 to 1?

[lime fulcrum]

Hey!
IS there a way to reference to the Spline used for roads in the landscape mode? Or is it unaccessible?

[deep geyser]

Isn't the spline a separate object that effects the landscape? At least in the monster truck UE4 demo

[lime fulcrum]

I don't use the spline as a Spline Mesh Actor. I use the one in the landscape mode

[deep geyser]

idk then

[lime fulcrum]

I'm just adding a spline actor and use that 😄

[brazen merlin]

lol thats simpler than what i was thinking - i thought there was a padding of 0.3 needed between a 0-1 slider, but i didnt know the distance in world space between the two

[sturdy herald]

Hello. I have 3 points on a circle, from this 3 points i calculated the origin of circle. Now i want to make a circulare rotation on this circle. I found something on internet and tried to use that, but its not working fine. How should i use the rotatevectoraroundaxis or how can i get the rotation of the circle (so i can rotate an object there and child the mesh which should rotate)?
Here is my nodes and the link where i found this advice.
https://blueprintue.com/blueprint/72x0tjdb/
https://answers.unrealengine.com/questions/875580/view.html?sort=oldest

[minor pagoda]

Hi, can you give me an advice about whether is better to make a blueprint "Weapon" that reads a table whit all weapons to build itself based on a key, or to build a child blueprint of Weapon for each weapon in the game?

[brazen merlin]

either could work

[minor pagoda]

and which could be pros and cons

[dim robin]

if they have all the same propreties, like for example total ammo, damage, etc, i would go with 1 main actor and then childs

[minor pagoda]

can u tell me why?

[brazen merlin]

generating from a DT means you only need one weapon class, you can manage all settings in one area, testing them requires a DT or valid entry so it can be troublesome to test specific functionality/debug specific values since they come as a row/struct from the DT.

making each yourself, which can still have some DT values plugged in, lets you design each one as specifically as you need. you can visualize things like mesh size, collision area (potentially have more than one collider), and extend from parent class functionality.

also, you cant write to DTs, only read from. It's also harder (but possible) to pull asset references in DTs, but would be less painful if it were done for each child class, plus each child class can keep track of their own variables (in addition to inherited ones) and can therefore be modified - though in either case, storing the stats of a weapon in a struct can also be kept for later read/write needs

[minor pagoda]

That make sense, thanks

[maiden wadi]

Personally, I think the only time you really want static data for weapons in a table or DataAsset is when you're creating stuff that scales. Like different levels of weapons, Normal/Superior/Epic/Legendary, etc. It's much easier to make correct logic for weapons in the weapons themselves or at least a parent class. Always be sure to have a parent class that you can cast to. You avoid having to have all of the meshes and stuff loaded up all of the time.

[quaint portal]

hello, I'm trying to make it so the camera focuses on whatever the player is looking at, I thought the blueprint should look like this but it's not working at all. just blurs everything that is more than 2 meters away. what am I doing wrong?

[tiny meteor]

in bp is there a node which takes 2 booleans and returns 4 events for different states, or do I need to chain branches?

like output events: A, B, A+B, 0

[eager plank]

Hey I'm new to unreal engine and need some help, I made a key to unlock a door which it works fine. The only thing I have an issue with is figuring out how to rotate the key(I want to rotate the actor), I want to make the key rotate in place until it deletes itself upon pickup. Anyone know what's wrong?

[trim matrix]

(I'm creating an RPG game) I want to make a ranking system for my game, but I searched on youtube and google and there is no one teaching, can anyone help me?

[unborn maple]

what would be the main issue the actor bugs out when trying to turn the camera spazzes back and forth and then the actor flys off the stage. i have my code like this. it turn towards cursor but seem to lose control

i am just looking for it to smoothly rotate where ever the mouse is at.

[midnight kiln]

The Blueprint you have is getting the rotation of your key and then setting the rotation to the same value, every tick.

What I would do is look into creating a custom event and a Timeline. Here is an example.

[unborn maple]

gotcha i never seen it done that way everyone says to do it onn tick

[eager plank]

^

[unborn maple]

appreciate the help cause it drove me crazy

[torpid hound]

Unlikely. It would be pretty simple to create a function for it

[midnight kiln]

@unborn maple wait, im confused lol, that was in response to @eager plank

[proper briar]

Hi, is "Get Project Directory" still working after i package my game?

[faint pasture]

@unborn maple always or only sometimes for a known duration?

When does it spazz out?

[unborn maple]

always

anytime i try to turn it just spazzes out.

[faint pasture]

Does turning bring the camera with it?

That is, would turning make the mouse now point at a different spot?

[unborn maple]

yeah it does

the camera is attach on the pawn

[faint pasture]

Well that's your first problem. Imagine it, the pawn turns to face the mouse, but in doing so, it turns the mouse more, which means it'll never be able to face the mouse position

Like a dog chasing its tail

[unborn maple]

so i have to set camera off of the pawn?

[faint pasture]

No but you need to rethink your approach. Also 2nd problem, why are you setting relative rotation and not world rotation?

What sort of aiming do you want?

[unborn maple]

im new so im doing most of this for the second time

i am trying to have actor face the mouse cursor, its main attack is a dash towards it facing direction. so i am just trying to have it be responsive in that nature.

[faint pasture]

Do you actually have a cursor? Or just a crosshair in the center of the screen? Is it top down or 3rd person or 1st person?

[tight pollen]

hi everyone, how can i ignore all static meshes in LineTraceByChannel? I'd like to ignore all the things that are in the game just for the sake of design

[proper briar]

@tight pollen aren't there a "actors ignore" option in linetrace?

[unborn maple]

3rd person as camera attach to pawn itself.

[faint pasture]

I'd just not have them block whatever channel you're tracing in

[tight pollen]

yep but i don't know how can i do it with it

I want it to block only items that can be picked up

[faint pasture]

Just route input to the camera or spring arms rotation, and then have character do the facing. So the camera is NOT driven by the character orientation. Look at the 3rdnperson example project for an example setup

[faint pasture]

Custom channel

[unborn maple]

seam3, that would be in your project settings

[faint pasture]

Add channel Interactable or whatever

[unborn maple]

ok.

[faint pasture]

Channels are like collision layers. Things that don't block the channel are invisible to a trace on that channel.

[halcyon talon]

does anyone know how to get rid of the orange and white box?

[faint pasture]

That's from moving a window panel around

[tight pollen]

yep

ok

thanks

[halcyon talon]

how do i fix that

[faint pasture]

@tight pollen should you be able to pickup a pickup through a wall?

[faint pasture]

Click around or restart editor

[halcyon talon]

Okay thanks!

[faint pasture]

It's stuck thinking you're dragging a window panel

[halcyon talon]

ahh right

I'm just learning how to use Unreal Engine 4. I'm following an Hour of Code tutorial by Dev Addict

[zealous fog]

Can I get a pin like this on functions I make myself?

[faint pasture]

Add input parameter to function

[zealous fog]

One of these?

[faint pasture]

This is either an actor or component reference of some sort

I thought u meant how to add parameters in general.

[zealous fog]

I have this

But it looks like this

[twilit gull]

how do i get this value from default anime motage?

[fiery swallow]

can't you just get the length of the montage to play? it's the same thing isn't it

[twilit gull]

i need the played time value as i though to use it for bow charge

[faint pasture]

Name it target. I don't know if it can default to self if you made it in blueprint.

Although depending on what you're doing there may already be a Target note, what exactly are you trying to do here?

[vital aspen]

Is some one there that can help with finding an item in a array of slots from the player. Here's what I have.

The idea is that it needs to see if any item matching the item the player just pickup that is all ready in the player inventory. If there is, Then it add to to that stack. else is that it adds to a empty slot.

In the lower left, theres a var that's not being set. So I have no idea how that works. Still learning

[faint pasture]

I'll either talk to you about this before or somebody else with the exact same problem. The problem is if your items can stack within a single structure, a stack of one and a stack of two will not be equivalent structures

[vital aspen]

The var name is index

[faint pasture]

@vital aspen show your item struct

[vital aspen]

Yes, all items come from 1 structure.

[faint pasture]

What are you considering to be the same item, if their data table handle is the same?

[brazen merlin]

This does look rather strange... why is Item set but then not referenced in the function? Shouldnt it be used to find it in the array? That can be done without the loop. This would also remove the confusing multiple outputs.

[zealous fog]

I just wanted to add a cleaner print string node, but still be able to see which blueprint it happened in

But if I have to add a self reference node everytime its not really cleaner lol

[vital aspen]

Guys I don't know. I'm doing this from scratch. The video tutorials I have watched don't all ways work.

@brazen merlin and @faint pasture do you guys have a better way of doing this. Let me show you this.

that's the result I get.

[brazen merlin]

Then i figure you could do the set, get Item and use Find in your PlayerSlots (assuming they are the same data type) and determine from there if it exists then either add or make a new slot

[vital aspen]

ok, cool, have a sample on this.

[faint pasture]

@vital aspen why are you getting the current quantity?

And when is Index set

That seems fucky, just iterate over inventory and return true and index if the data table row names match

[vital aspen]

well I don't know why. that's why I'm changing it. I wish I could find better videos on this crap. would make it easy.

[faint pasture]

If that never happens return false and -1 I guess

Videos suck, just struggle through it and you'll figure it out.

[maiden wadi]

Don't rely on videos so much. Use them for reference only.

[faint pasture]

I sometimes skim for the AHA moments when you see something you've never even thought of but never for the nuts and bolts. Make sure you can get an good abstract model in your head of what you want to do and the code will just fall out EZ

[vital aspen]

Yes, that's the only way to learn how to do most of this. It's not like I have a personal Teacher. How about this.

[faint pasture]

And then when you go to C++ land you'll end up in the exact situation I always do, knowing way more about what I want to do than the details of how to do it because something uses a different function name in C++ or any of a million other types of obfuscation

[zealous fog]

i assume you didnt mean to qoute me hehe

[faint pasture]

That will fail if you have a stack of 2 and are trying to find the exact same item but it's a stack of 1

[faint pasture]

Whoops

[brazen merlin]

wait, so that returns the index that the Item is at, if it exists

thats not returning quantity

[faint pasture]

If he has Apple(2) it won't find Apple(1) as it's not identical.

[vital aspen]

ok, I'll try this, then, 1 question. How do I get the item in that slots index number. So that I can add it to that slot index

[faint pasture]

That's why I asked if stack amount is inside the item struct or not.

[brazen merlin]

Find should return the first index of the queried entry, which should be the only

[midnight kiln]

I just tried out your setup and it seems to work ok for me. Try printing your distance and hit actor, maybe you are hitting something else?

[faint pasture]

It's an array of item structures which include the current stack size.

If he already has a 2 Apples, it will fail because he's looking for 1 Apple

[brazen merlin]

that's not being fetched yet, currently it's just finding if the struct entry exists in the array - the return of the Find needs a get from the Array to then break it and get its quantity

[vital aspen]

Yes, I know. It just told me from the tool tip. the issue is that how can I get the number of items in that slot. The 1 slot I wanted to add to it when I pick up the same item

[faint pasture]

That entry won't exist in the array.

[faint pasture]

Your original approach almost had it, just do the one comparison. Just get rid of the bit where you are checking if stack size is greater than one or whatever you were doing

[vital aspen]

no that didn't work, ah crap.

[brazen merlin]

ah i getcha now

need to check if the same type of item is in inventory

not struct

[faint pasture]

@vital aspen

Assuming RowName is what you check to conclude that they're the same item

[midnight kiln]

@quaint portal or you may need different maths on your trace

[vital aspen]

like this

That didn't work all so,

[quaint portal]

it's getting accurate numbers of the objects, i.e an object that is 9 meters away prints 900. so I don't think so

[faint pasture]

@vital aspen no compare to the incoming Item

You're asking "Do I already have a stack of this item?" Right?

[vital aspen]

Yes

[faint pasture]

K then check in the loop vs the item you pass in

[vital aspen]

this is all I have left

@faint pasture I'm confused at what to do

if I understand you right. I compare the item to what in the array element

[faint pasture]

For each loop will give you every item one by one

Items then item2 then item3 etc

You check for if one matches.

If you get to the end and there's no matches, then you return a fail/didn't find

[midnight kiln]

Oh, I see it now, I bumped up my interact distance and everything faraway is blurred, I don't know much about the post prosses stuff, but ill let you know if I come up with anything. 🙂

[vital aspen]

@faint pasture Like this

[quaint portal]

ok, thanks

[brazen merlin]

still need to use the Item var you've stored at the beginning

break the Item as well to compare against the RowName of Slot

[vital aspen]

You mean like this

[brazen merlin]

yeah, not sure what Index does though

[vital aspen]

Yes I know. I removed it. let me try this

Hope.

I'm stump

[normal stream]

If anyone's not busy, I'm having trouble sanitizing my collision logic so that the player ship and any projectiles it fires don't interact.

[vital aspen]

@brazen merlin Here's the rest of the code. that adds the item. I really don't know what to do.

[brazen merlin]

after looking at this long enough, i think there is a slight issue 😄 - there is no false return

so i think the function will, if it completes the loop without a success, use the return node which would be true and the index of the last entry

[vital aspen]

I tried something like this

and that didn't work.

[twilit gull]

how do i get real world location of the object?
if i try to detach arrow from the bow it has character location/rotation (that goes from default in unreal)

[brazen merlin]

it wont, because the loop executes all the way through, so it could be true on the first entry, but then false on the next, therefore returning false

[twilit gull]

so i spawn by the bow and it spawns on the laft

[zealous fog]

get world location?

[twilit gull]

thats world location

[brazen merlin]

I think the loop check is not the last part of this - i think the loop is to check if you can find a match, then on completed, work with those findings

[faint pasture]

@vital aspen dude use the item struct you're passing into this function

[brazen merlin]

they are

[zealous fog]

you asked how to get world location 😅

[vital aspen]

@brazen merlin I'm just have to see if I can find someone that can connect to me and look over all the code. I don't know what else to do.

[faint pasture]

Nah not that I've seen

[brazen merlin]

#blueprint message its here, the get is split open

[twilit gull]

yeah, like real world location 😄
not somehow still relative world location

and thats how it sees charge state

[faint pasture]

Ah ye I thought that was a make

[zealous fog]

show how you are spawning the arrows please

[twilit gull]

simple detach does the same

[brazen merlin]

i think that makes sense, there is a lot of moving parts (functions) from what i can see - i gotta run though :/ bb in 4 or so hours

[faint pasture]

@vital aspen Show what you have so far for that function

[zealous fog]

Get actor transform?

[vital aspen]

Oh thanks @brazen merlin

[faint pasture]

@vital aspen go back to your early return

[twilit gull]

haha, thats detach and spawn new

the one on the bottom is actor transform

seems like

[zealous fog]

But why is the original arrow not in the bow now

[faint pasture]

If true, return true and current Index
If false do nothing
On loop end, return false and -1 I guess

[twilit gull]

i detached it

[zealous fog]

Alright so then you just need to turn it 90 degrees and it should work right? (dont know why you need to lol)

[twilit gull]

seems like this one is causing the issue, but to fix that i need character fbx to fix its location

[vital aspen]

@faint pasture This is what I had when I started

[twilit gull]

probably yes, but that will need manual adjustment for every bow and gonna broke on 180 degree rotation i assume

[faint pasture]

@vital aspen

[zealous fog]

Just take actor transform and add 90 to it

before the spawn actor

[vital aspen]

Yes, I did remove that extra 1

[zealous fog]

break transform break rotator make rotator make transform

[faint pasture]

@vital aspen also return false after complete

[zealous fog]

Add 90 between break and make rotator

Ideally youd change the fbx

[vital aspen]

ok

[zealous fog]

probably better because if you ever do fix it, youll need to change the BP again

(And theres probably another way to fix it but I dont know how sorry)

[wild seal]

if i make a bp macro it acts like a function or it will be replaced with the nodes inside runtime?

[zealous fog]

Macro is just the nodes collapsed

But reusable

[wild seal]

so like inline in cpp right?

[vital aspen]

@faint pasture This is what's it's doing in game

[zealous fog]

Dont know only use blueprints

But you can run latent nodes in macros not in functions

[vital aspen]

This is what my codes looks like now

[zealous fog]

You cant call macros from outside though

macros*

[wild seal]

what im really interested about if whether they result in a function call or not 😄

but from what you said seems not

Macros take the nodes from the macro graph, and actually replace the macro node with a copy of all those nodes. Basically, when the Blueprint is compiled, the macro copies all the graph nodes, and pastes them in where the macro node is.

wiki says this

great

[zealous fog]

Yup

[wild seal]

so no penalty using a ton of them 😄

yay

[zealous fog]

Well, you are increasing the amount of nodes

With a function you arent

You copy paste a macro 20 times, you have 20 times the nodes

You copy paste a function 20 times, you have the same amount of nodes

[wild seal]

yeah but thats not affecting performance

just the compile time maybe

maybe the bp as is compiled will be bigger in memory too

[minor pagoda]

What happens if i spawn a character with a child actor component that has no actor class assigned?

[zealous fog]

Also you cant call macros in other BPs

Macros should be used in different cases than functions

is what I am trying to say

[wild seal]

ofc

[zealous fog]

https://docs.unrealengine.com/4.27/en-US/ProgrammingAndScripting/Blueprints/BestPractices/

[wild seal]

haha thats where i read the above from too 🙂

one should avoid function calls if they are often called if they can thats what im thinking :D, ofc inlining everything has problems, like worse to debug, compile time and code size grows, so have to do it reasonably

[viscid barn]

Anyone has any idea how to make an RInterpTo stop short of its target without it being sudden?
I want my camera to follow an actor but just enough to keep it within range of the center of the viewport, not actually DEAD in the center, but to no avail so far :/
I tried using map ranges to control the alpha and but it's not working too smoothly 😩

[wild seal]

set a threshold

[zealous fog]

Whats wrong with function calls?

[wild seal]

moving the stack pointer about, need to push arguments, need to pop old ones after return

usually not aproblem

[zealous fog]

I have no idea what that means lol

[wild seal]

but if it is used in a tick like 120 times a second in 100 actors it could save some perf 😄

[zealous fog]

How would a macro perform better than a function then?

Wouldnt you still be calling it on tick

[wild seal]

don't have to do the things i just said 😄

[zealous fog]

or 120/sec

Just curious

[wild seal]

it is not actually a function call as the wiki says

but code duplication

you can think of a function as a part of code that has some place on a list

the stack pointer is where your finger pointing on the list

and when you calla function you have to move your finger to point on it

while writing down the things you wanna pass to it

witha macro you don't move your finger as it will be under your finger the next line

[zealous fog]

Makes sense thanks

[wild seal]

basically a call in the computer works like this:

[zealous fog]

I imagine the performance gain is close to 0, or would I be wrong there

[wild seal]

jump to the adress of the function: xy address, then push these parameters to the stack the function using

well as i said if you do in in a really frequent place it can be quite an amount 🙂

[viscid barn]

If that was in reply to me, that is indeed what I'm struggling to figure out how to do but how would I go about that?
inclusive one is pretty easy with clamps but I have to admit I'm not seeing how to do an exclusive one 😅

[zealous fog]

Ugh I am finishing my objectives system now, took me a good 3 days

But pretty happy with the results

[wild seal]

"premature optimization is the root of all evil." This famous quote by Sir Tony Hoare (popularized by Donald Knuth)
so what i said has to be taken witha grain of salt 😄

i imagine what you can do is

just add something to target i bet

oh wait

[viscid barn]

I thought of making the target bigger yeah, but it still aims for it's origin point 😅

[wild seal]

you actually wanna go to center but not fast?

[viscid barn]

No

I want it to stop short of the center

using distance 2D and map ranges I managed to do it but it's kinda ugly as it updates the alpha, which makes it stop suddenly instead of the smooth deceleration it naturally has when you use it plainly

[wild seal]

id add target.getnormalized() sign*something to the target rotator

it aims for center but stops short

[viscid barn]

hmm, lessee

[wild seal]

hmm seems like there is no get normalized node in bp 🤔

[viscid barn]

Yeah

Guess I could split the rotator into floats and then make it back?

[wild seal]

yeah

but need to normalize it

[viscid barn]

yeah I meant normalize the floats then make back into a rotator

[midnight kiln]

@quaint portal This seems to be working for me and here is the video that helped me out.

https://www.youtube.com/watch?v=6jnIC4HzniU

Hope is helps and points you in the right direction. 🙂

[wild seal]

if you know how to sure 😄

[viscid barn]

alternatively I could normalize the target's vector instead

[wild seal]

no

[viscid barn]

😅

[wild seal]

normalizing rotator does the following what you need

• Create a copy of this rotator and normalize, removes all winding and creates the "shortest route" rotation.

shortest route

traing to figure out if theres a bp function like that

[fervent temple]

i cannot for the life of me figure out how to get this projectile to do damage

no matter what i do it wont work

it prints all the strings at the end

tells me what it hit, if it hit, and how much damage it applied to it ( it always says 0 instead of 6 )

[zealous fog]

Do you have a ondamage event

Or anydamage

Something like that

[fervent temple]

now this might indicate my damage system is bad but no works fine with sword

[viscid barn]

Nope, if I try to normalize the individual axises it just locks the rotation as is, so that's a bust 😂

[fervent temple]

idk if u talking to me tho

[zealous fog]

Is the damage 0.0 or 6.0

[fervent temple]

it prints 0

and does 0 to my health

it prints the charcter properly tho

lemme screenshot the out put

[zealous fog]

What is the damage set as I mean

Cant read it

[viscid barn]

hard to say if it's a 0 or a 6 😅

[fervent temple]

oh set to 6

changed it to 30 now to make it easier

[zealous fog]

Yes please

[fervent temple]

and my damage system does work becuz i have a sword that does damage

[zealous fog]

Your on damage event isn't fringe I believe?

Firing*

[wild seal]

@viscid barnapparently delta is your node

[fervent temple]

yeah thats what im thinking as well

[wild seal]

this is what id do

[fervent temple]

not sure what to do about it tho

[zealous fog]

Can you checj that

With a breakpoint

[viscid barn]

I'll give it a shot, thanks 😄

[zealous fog]

Oh wait

Ofc it isnt firing

If damage is 0

[fervent temple]

but dmg is set to 30

[wild seal]

@viscid barn replace the 0 in the multiplication with the threshold you want

[viscid barn]

The empty B on the delta is intentional?

[wild seal]

thats not "empty" that is the delta to 0

and you have to do the sign and mult and add nodes for all floats

in the rotator

@viscid barn

i just did it for the first (roll)

@viscid barn tho this might be bad still

[empty needle]

Hi, does anyone have suggestions on how to return a single instance of a ISM with mouse over?

[wild seal]

on a second thought

@viscid barnyou have the camera rotation right?

[viscid barn]

hmmm

[wild seal]

give that to the deltas B

[viscid barn]

The camera is running away from the target now 😂

[zealous fog]

Could it be because its multiplayer

I havrnt done much multiplayer so maybe someone else eknows better

But dont you have to call it on the server

[wild seal]

yeah try cam rot into deltas B node

[fervent temple]

the damage

fuck i might

[viscid barn]

if I put cam rot in B, it locks the camera 😂

[viscid barn]

not moving 😅

[fervent temple]

yeah that looks right

lemme see

nope doesnt work

[wild seal]

yeah try like this

so in the add use the original target rotator

and in the b put in the camera

[viscid barn]

Ah wait!

I think I figured what's going on

I tried lowering the * bit by bit to see if it could reach a stable point

[fervent temple]

@zealous fog

this is what i use for the sword

but it didnt work for the projectile

[wild seal]

yeah i imagine u have to use a negative value there

in the multiply

[viscid barn]

gdi, it works but in the wrong direction, I tried to negate the outcome to set it right but it made it go crazy

Yeah that's what I was trying 😂

[faint pasture]

@vital aspenjust pm me and show what you have as of right now

[viscid barn]

AAAY it works now!

[wild seal]

did it with the camera+original rotation?

yay

[trim matrix]

my actor not work pls help

[vital aspen]

@faint pasture I sent a friend request.

[viscid barn]

that said only if the B is left empty on the delta 😂

[fervent temple]

brazil?

[trim matrix]

yes

[wild seal]

😄 glad it works in the end XD

[trim matrix]

will you help me?

[fervent temple]

sure lets dm

[viscid barn]

it's not perfect but it's progress! Thanks!
Now I just need to figure out how to make it not go on the wrong side when crossing up the target 😂

[wild seal]

haha yeah

thats one problem it causes

but if you do a delta with target you can clamp the abs of the threshold to it and multiply it again with the sign 😄

[viscid barn]

I'll have to keep that in mind for tomorrow, it's getting a bit too late for my brain to follow lol

[wild seal]

with a 0 min and max with the abs

and the threshold has to be abs ed too 😄

in the clamp

a lot of abs 😏

[viscid barn]

😂

[wild seal]

@viscid barnon a second thought the funny thing is

the thing im doing is i check facing

and in an if im only doing it till it doesnt face it x%

like you can check this if you vane 2 vectors easily with the dot product

and lets say if the dot product 0-1 is facing the vector on 1 and -1 is facing away

so lets say you call the rinterp to till its 0.8

it can be the abs of the delta of the 2 rotations too

it solves the problem and makes it much easier

[viscid barn]

I tried using dot product at first but for some reason it'd create an odd offset

as if I was using an over the shoulder camera

[wild seal]

how come?

[viscid barn]

no idea though it probably was because I messed up something 😂

[wild seal]

use camera forward vector

ooh u use a camera boom / spring arm

that complicates things i guess

and make sure to normalise the look vector

yo you have to input some rotation to the arm and some for the camera iirc

[chilly geyser]

Is get world rotation yaw pitch and roll always the same regardless of which direction the SM if facing?

[viscid barn]

Nah I use a individual camera actor

[wild seal]

just one camera? 😮

[viscid barn]

spring arm is way too restrictive

[wild seal]

then normalised the target-camera vector?

so what you need is dot((target-camera).normalise(),camera.forward)

i guess

[viscid barn]

hmm, I'll try first see if I can stabilize this version as it's already done, if not I'll try using that dot method

[wild seal]

if this is less than lets say 0.9 then turn

give this a try

its super easy this way 😄

[viscid barn]

right

let's try x)

though first I need to reboot UE, I don't know why but if I use the PIE too much, the fps drops each time until it becomes unplayable

[eager plank]

I need help really quick, I made a door that open and closes yet I can walk straight through it(when closed). I have all collsions set to block all. Any ideas as to why I can walk through it?

[fast escarp]

Is there some way to select multiple variables at once in BP? I'm a bit mystified that I can't seem to select a whole group of even similarly typed vars. Cntrl/shift clicking as you'd expect doesn't work.

various attempts at cntrl/shift click to no avail, very strange I have to assume there's some way to do this

[viscid barn]

@wild sealmust have messed up something cause it's giving me the distance between the camera and the target 🤣

[dusk ember]

https://youtu.be/gsWHj8GbsfM i followed this tutorial on creating wall running in ue4 and didn’t have any errors. but when i tried to go onto a wall, it did nothing. can anyone help with this?

[eager plank]

I made a door that open and closes yet I can walk straight through it(when closed). I have all collisions set to block all. Any ideas as to why I can walk through it?

[fast escarp]

what's wrong specifically? There's alot of dependent parts in that tutorial

[dusk ember]

i can’t tell, i don’t have any errors but none of it works when i run it

like i jump on a cube that has collision and allows the player to jump on it and it won’t do anything

[fast escarp]

I'd recommend using print string or breakpoints to narrow down the problem

I've gone through that tutorial so I can at least confirm his version works correctly

[dusk ember]

i’ll try that

[lost solstice]

Im trying to run a small piece of code inside a function after a certain delay. I know i cant use delay nodes inside of functions and I tried to create a seperate function to put that code in but released i need a value from that specific function in order the for it to work properly. How might I go about doing this?

[dusk ember]

im not even sure what to print tbh

[trim matrix]

is there anyway i can add subtitles for a video in media framework ?

[fast escarp]

Hard to give a full overview of debugging, you want to start by ensuring the input is being taken and follow sequentially, following the path of the logic is executing as you'd expect. Maybe take a look at some youtube videos for breakpoints in unreal blueprints if you're not familiar

[dawn gazelle]

You can use map range node. This is the "clamped" variant that will only allow output of values between the defined "out range".

[dusk ember]

it seems like the wall run update event is only happening once. is this right?

[fast escarp]

no it should be on a timer

smth like this my architecture is probably not the same as he revises the setup in that tutorial a few times

[dusk ember]

lmao i just realized that looping wasnt checked

thank you

[fast escarp]

that'll do it lol 👍

[dawn gazelle]

Have the first function provide the variable you need as a return value. Start the entire process as an event.
Event > First Function w/ Return Value > Delay > second Function w/ variable as input

[lost solstice]

i can try and do that that would probably work. Only problem is that functions running inside of a function so i will have to break out at some point

[trim matrix]

cause couldnt able to find resources to look into, so a help would be greatful

[wild seal]

that is impossible

[viscid barn]

Every day is a new day of discovering ways to not make things work the way intended 😂

In all fairness it's quite late so it's highly likely I mixed up something in the process

either way, snooze time for me, have good evening/day/night o/

And thanks for the help! 😁

[wild seal]

uw

[stray moat]

hello how would I highlight a an object once the widget button assigned to it is hovered

[empty needle]

Sorry guys, does anyone have an idea of how to return a single instanced static mesh under a mouse cursor?

I've tried this, but I'm not sure if I should be returning the component, and then get the instance.

[glass crypt]

Is there an easy way to find if a key is consuming input somewhere in a project? Like say if there's some random actor consuming the W key in a level?

[tawdry surge]

Actors don't take input. You can check the player controller. Where is your input located?

[glass crypt]

Ah yeah that's right, example pawn, not actor.

That's what I'm trying to find. I've got a MoveForward input axis in a player pawn that isn't getting called.

[normal stream]

Heyo folks, I'm having trouble with a blueprint and function.
https://blueprintue.com/blueprint/uaef5k53/ - I already fixed a goof where I was using the wrong variable

• the problem currently is that right mouse click should fire a secondary weapon (I have a child BP set aside for that)
• But there seems to be no actual response when I right click.

https://blueprintue.com/blueprint/1q1cxrux/ here's the function as I currently implement it

[trim matrix]

Helllpp

[empty needle]

You need to read the data, and stop it @ 100%

add a condition, that says if % <= 1 or something like that.

[trim matrix]

ok

[trim matrix]

thank you very much, it worked

[tawdry surge]

@glass crypt are the other inputs firing?

[stray moat]

I'm making a random unit generator , do I make the body parts which are skeletal mesh an array or variable as plan to call it in my units blueprint as a structure

[brazen merlin]

variable array

[stray moat]

so in the body parts structure i will make the skeletal mesh an array variable with all the bodyparts included and call it

[brazen merlin]

whoa whoa, no ever said anything about struct

oh you did lol

i guess i read that differently

[brazen merlin]

yeah, thats sounds right - skeletal mesh array in struct... that might be a lot of meshes no? I was thinking its an array for each body part section

[stray moat]

i do have a skeletal mesh array for my helmets , with 8 helmets which are skeletal mesh in it

[brazen merlin]

so you have a lot of meshes yeah? for each body area?

[stray moat]

yes

[brazen merlin]

i guess an array for each area makes sense

data table might be nice to manage, but thats my preference and it can be a bit difficult to get working how you want

[stray moat]

I'm thinking about using a datatables with a csv but I'm too lazy

[brazen merlin]

you import csv as data tables

[stray moat]

worded it wrong

[brazen merlin]

there is a bit of setup time, yeah, i getcha, maybe see how many assets you potentially will have

[stray moat]

more questions: would I have all the materials in the same struct as the skeletal meshes or in a different struct

[glass crypt]

Looks like it was actually the wheeled vehicle component not inheriting the wheel setup of the parent. Thanks tho.

[brazen merlin]

so the same skeletal mesh can have different materials applied to it? like 5 different colors for the same fedora?

[stray moat]

yes

[brazen merlin]

this does sound better and better to have a DT 🙂

each row is the skeletal mesh - columns are material list, body location

i guess that might be a bit tricky come to think of it...

seems like a lot of arrays otherwise though

[stray moat]

I want will put it all in a struct, create a data table, and set the body parts, abilities , stats, battle animations and gender for each of the classes , like mage and archer etc, then get the game to generate a unit in my unit bp for the player to hire and take on an adventure I'm doing something like the darkest dungeon, I learned how to to do turn-based combat already so now I'm trying to create my unit system.

[brazen merlin]

maybe each row represents the build of the class

im seeing lots of "s" 's at the ends of those categories - sounds like arrays

[stray moat]

each row will represent the build of a class , I want to do it that way so I can distinguish between genders'easily

[brazen merlin]

makes sense

[stable osprey]

hey so i'm trying to implement this hologram system, where a timer appears, and during that time the movement and actions of the player are recorded, and then played back with a copy of the player,,, i'm really struggling to figure it out

the only thing I had so far was to look at a video about race ghosts but I tried to translate it into a 2D platformer and it just didn't work

[gentle urchin]

How accurately are you "recording"

thinking some strobe effect (ghost fades in/out) then youi could just track the transform

[stable osprey]

i'd like to to be pretty accurate,,,

[gentle urchin]

c++ ?

[stable osprey]

i kinda really only know blueprints

[gentle urchin]

theres a replay system there

hmm

I suppose you could still track a few key locations and do some interpolation magic

jump wouldnt be accurate then

Not sure how one would handle it accurately really

[stable osprey]

hmm,,,,

[gentle urchin]

Its hard to accurately copy its movement with the "same char" , using physics and all that

[stable osprey]

what I use like,, the sequencer? is that a possible route

[gentle urchin]

Dont think you can generate a new sequence at runtime like that?

[stable osprey]

damn,,,, that's annoying

welp,,, i'll keep thinking,,, i'm sure there's a way around this,,, feel free to ping me if you come up with anything

[gentle urchin]

Perhaps consider simplifying it 😛

[stable osprey]

I would but i'm stubborn 😅

[brazen merlin]

havent done this before specifically, im guessing that deleting the root, considered a component, deletes it's children components, which is all of it

[gentle urchin]

Imagine how easy it would be to just save the location every half second, and do a "trail" of ghosts 😄

[stable osprey]

so like,,, save the location every half second,,, and then get a child of the character blueprint to act out those locations after the timer runs out?

[brazen merlin]

yeah, i just said that

[gentle urchin]

Something along those lines yes

[brazen merlin]

try deleting a different component, it should only delete that one, i dont think its bugged

[stable osprey]

thank's i'll try that out

[fickle nebula]

help

[brazen merlin]

as i said before... you are deleting the ROOT

[brazen merlin]

hmmm..... yeah, no thanks

[fickle nebula]

haha

[gentle urchin]

Im no emitter or niagara specialist, so the effect can definetly be like 100 times better

but this is the gist of my suggestion