blueprint

[trim matrix]

so add that here?

[faint pasture]

Yeah somewhere in there, thats a mess lol

Think in terms of rules

right now your rule is "When triggered, find a door with a matching tag, and do stuff to it"

in this system, your rule would be "When triggered, tell MySwitchableComponentRef to do its thing"

doesn't care if the final thing is a door or a P block or whatever, all it does is talk to the component that it cares about

the component tells its owning actor through that dispatcher, and the owning actor does whatever

[trim matrix]

is this better

[faint pasture]

A bit better. All the state (is pressed, reset delay, etc) can live in the switch or the switchable component, your choice

Either way, the switchablecomponent has to know when it's been activated and deactivated (by resetting)

[trim matrix]

so what do i do next then

[faint pasture]

I'd probably lose the OnSwitchActivated interface call and just put the logic inline

when it activates, tell the component

when it deactivates, tell the component

[trim matrix]

so add the interactable component to the switch's blueprint?

[faint pasture]

no, to the thing the switch controls

just like interaction

the switch BP should have a REFERENCE to an interactablecomponent

which you can set when you place it in the world

so it knows which component to talk to

[narrow sentinel]

Out of interest if I modify bones in the anim instance is that more or less expensive then just having an animation doing it ?

[faint pasture]

Probably more

whether or not that matters, depends

[narrow sentinel]

Hmmm it's cause to easy my workload some skeletal meshes I'm not animation and instead just modifying bones in the specific times needed

Like I have a door for example that literally goes up and down and rather then animating it I'm just using modify bone in anim instance to interp it to a new relative location and when it's reached it stopping modifying bone

[faint pasture]

The perf hit is probably just from doing stuff in BP and from doing it on game thread

But until it's a problem, it isn't

[copper chasm]

nevermind my code was out of order

[narrow sentinel]

Would it be on game thread if the logic is running on anim instance ?

[faint pasture]

do you mean in AnimBP

what do you mean by running "on anim instance"

[narrow sentinel]

Yeah haha sorry been casting to anim instance today so that's in my head

Anim bp is what I would mean though

[faint pasture]

might be on anim thread if it's not warning you and you're not doing anything outside of animation

[faint pasture]

ok so call an event on that component ref when the switch is triggered

[trim matrix]

how do i do that

[narrow sentinel]

Didn't appear it was giving any warnings

[faint pasture]

Drag it in and right click

the same way you do anything to anything

[trim matrix]

no i mean where in the nodes do i put it

[narrow sentinel]

Is there a way for force it to run on another thread other than game thread?

Just thinking further down line if I have to do anything to change things

[faint pasture]

AFAIK stuff in the anim BP runs on the animation thread assuming you don't make it not

and assuming you use the correct events etc

[narrow sentinel]

I believe so

[narrow sentinel]

Is there even a way to do that

[faint pasture]

Yeah, just move a component or do anything else that modifies the world

I recall it warning you if you were doing stuff to force it to run on game thread

But I don't really do animation so not sure

[narrow sentinel]

That's what chat gpt says about it which makes sense tbf

[faint pasture]

drag off the blue pin and poke around

That's the event you want to call

[trim matrix]

so add that after the cast node?

[faint pasture]

Sure, if a cast is enough info to press the button

put it wherever you want to tell the thing that the button got pressed

but you should have made a ButtonActivation component, idk why you're reusing your InteractionComponent here

[trim matrix]

so what am i doing 😭

[faint pasture]

You presumably don't want to walk up to a switched thing and press E and have it act like the switch got pressed

[trim matrix]

so this?

[faint pasture]

make a ButtonActivationComponent

[trim matrix]

inside the switch blueprtin?

[faint pasture]

you know how you made and set up an InteractionComponent?

do the same

[trim matrix]

ok

[faint pasture]

I mean you could just reuse InteractionCOmponent and give it a bool like ShouldUseSwitch or something but that's too complicated for now

I was talking you through Interaction as a simpler system that is very similar

[faint pasture]

Sure now just do the same thing as the interaction component. It's all the same, the only difference is how the component gets told to trigger

the InteractionComponent gets told to trigger by the player pressing E and figuring out what InteractionCOmponent it wants to talk to

the ButtonActivatableComponent gets told to trigger by a switch being stepped on and telling the ButtonAtivatableComponent that it cares about to do its thing

thats it

the rest is the same

[trim matrix]

so call the button component in the switch blueprint?

[faint pasture]

yes the switch BP will call an event on its ButtonComponentRef

it does not own or have a buttoncomponent, it has a reference to one elsewhere. the ThingBeingControlledBySwitch owns the buttoncomponent, the switch can just talk to it

[trim matrix]

so reference the buttoncomponent then setup the event?

[faint pasture]

sure go for it

[trim matrix]

so i make another event inside the buttoncomp one? then set it upo like that in the switch blueprint?

[faint pasture]

Yes

[faint pasture]

I'd have named it something different but you do you

ok now put a button component on some BP, and drag a button and that bp into the world

[trim matrix]

so add the buttoncomponent to the switch or thr thing i want to control

[faint pasture]

#blueprint message

[tranquil lagoon]

I am in a bit of a tangle with an issue. I am trying to modify a struct boolean which is inside an array, inside of another struct inside of a map. I use Set Array Element for this, but for some reason the change is never applied. What could I be doing wrong?

[high iris]

Am I correctly understanding that Actor Components' BeginPlay will always run before their parent actor's BeginPlay?

[copper chasm]

Thoughts on how best to implement -> I want the player to only be able to check one of the available boxes (the ones already checked cannot be unchecked)

I can probably just have each one set a bool on check and set the rest to uncheckable if the bool is active - seems the simplest

[real tree]

Anybody got an idea on what might be wrong with this?

[torn zodiac]

I am currently working on a VR project where I'm trying to dynamically deform a mesh inward along a spline. The spline is attached to an object, and I want to either deform or remove the section of the mesh near the spline points. However, I’m having trouble identifying the vertices that are close to the spline and applying the deformation or removal effect.

Could anyone guide me on how to achieve this? Any help would be greatly appreciated!

[thin panther]

No, since components cannot exist without the actor.

They will fire before an override though

So if you're putting logic onto your begin play in blueprints, your components will have begun play

[high iris]

Is this true of blueprints as well? The reason why I bring it up is that I have a player controller BP with a UI manager BP type of class as its actor component.

For some reason the UI manager's BeginPlay always fires before the player controller's BeginPlay when I put a breakpoint on both in my BPs, even though the player controller is its owner.

[thin panther]

You appear to be getting a copy of the struct there initially, so the changes won't be reflected back to the map

[thin panther]

As mentioned, components will receive their begin play before actors in blueprints. C++ muddies the waters a bit.

Though, a little tip, the engine has a nice UI manager for you built into the framework already, the HUD class. It used to be the only way of drawing to the screen but now functions as a nice local only place to keep your widgets.

[high iris]

Ok gotcha, thanks for confirming.

And thanks for that tip. I read in a few places online that the HUD Class was deprecated and was the old school way of doing things, but sounds like it's not actually the case? I'm not sure why we're not using it, instead triggering things from the controller.

[thin panther]

No, it's definitely not deprecated. You'd get warnings for using it if it was. It's still a core part of Unreal's gameplay framework.
Essentially the HUD class is a class that only exists on clients, which makes it perfect for widgets, since they aren't replicated.

The whole "deprecation" thing is a bit of a misnomer, but stems from a lot of it's functionality which is old remnants that aren't super useful now with UMG. Some of it can be, but most of it gets ignored. The class itself is super handy though.

[carmine palm]

MyAactor->USphereComponent -> UStaticMeshComponent

How can I set velocity in unreal?

Mesh has physics

Need to make it so it doesn't move currently.

Equiv in C# Unity

Figured it out lol

BallMeshComponent->SetAllPhysicsLinearVelocity(FVector(0, 0, 0));

Unless someone here tells me that is wrong 😄

[lunar sleet]

Wrong channel but yeah it’s probably fine

[carmine palm]

fasfas. Thought I was in CPP. My b neo 😛

[tropic token]

guys, what is wrong with it? :/

[desert juniper]

read the error at the bottom

[tropic token]

yeah, I see it, but it didn't change 🙂 I didn't rebuild source, it's delegate from CPP. for some reason it doesn't like it when it has TArray in it, I remove TArray and it works just fine. Very strange

[surreal peak]

Make sure the TArray is const&

[shut nymph]

Do y'all prefer to receive inputs in the Controller or the Pawn? I'm trying to be less noobish with things like this and it seems like Controller is the more proper answer despite all the beginner tutorials teaching me to just slap it on the Character. Also seems like having it in the Controller is more scalable

I'm sure the proper answer is "it depends on the game" but I'm just making a pretty conventional singleplayer third person shooter, nothing weird at all

[trim matrix]

I’m pretty sure slapping it all in the player blueprint is fine.

For large scale or multiplayer games I highly recommend using the controller as it just makes your life 100% easier. Learned it the hard way.

[shut nymph]

Thanks! Trying to save myself from the hard way haha. I think I'll do the Controller

[zinc sun]

yo guys I need some help, I tried a lot of thing, but the error "Blueprint Runtime Error: "Accessed None trying to read property FlashLightActor". Blueprint: BP_ThirdPersonCharacter Function:Execute BP Third Person Character: Event Graph Node: Toggle Light" It's making me a lot of headache. What's wrong with it?

[desert juniper]

Accessed None trying to read property ...
this error means that the object you are trying to reference is null. that means reference doesn't exist

probably because you didn't conenct this here

[trim matrix]

Happens to the best of us haha

[desert juniper]

in general, anytime you try to access an object, and it's value is null you're going to see that error. It's best to look around and determine why the value you expect to be valid is returning as invalid (null). usually these bugs are quick to solve 🙂

[worn kernel]

hey guys I have a question. The generation loads in game every time you near the edge of the map. The problem is that when i pause the game to load the mesh. The meshes load fine but when it unpauses, it stutters for a few seconds. Can i move that stutter to when the game is paused?

[lunar sleet]

How are you you loading this mesh, whatever that is

[worn kernel]

It checks for empty space around it by trace. If it hits something then it dosent spawn there and vise versa.

It stops spawning by distance and the game is paused for 10 secs to accomodate.

[worn kernel]

I see it loading the meshes just fine with no stutter. its only when it unpauses. it confuses me since the mesh is already there.

[lunar sleet]

You didn’t answer the question

[worn kernel]

Blueprints

[lunar sleet]

Are you just spawning it directly ?

[worn kernel]

yes

[lunar sleet]

This is not a great way if the mesh is heavy perf wise

Use Async Load Asset first

Then when successful spawn it

[worn kernel]

its a plane. with 1024 texture

[lunar sleet]

The texture

Whatever it is that you’re sync loading and pausing the game for 10 seconds for

[worn kernel]

im not familiar with a sync loading.

[lunar sleet]

Additionally, you should do actual profiling to see what precisely is causing the hitch, cause for all you know it could be something else

[lunar sleet]

I gave you the node name, it’s pretty straightforward

[worn kernel]

ill check it out

[lunar sleet]

And ultimately if things take too long to load in bp, cpp is the way but yeah

[gentle urchin]

Not sure doing cpp by itself will make stuff load faster ?

if most meshes spawned only share a handfull of materials, they're not gonna drag you down

Async loading is ofc still good practice . Pause in the game sounds pretty awkward from a player perspective

~~what about starting to spawn them preemtively? Without a game pause ~~

[worn kernel]

the world spawns as you move

[gentle urchin]

so whats the pause for

[worn kernel]

clean up for meshes that are far and spawning new tiles

[lunar sleet]

I figure just having to go through the vm slows you down a little but yeah it might not be noticeable

[gentle urchin]

Guess there could be a theoretical gain. Generally the VM should just call some native function that handles all the spawning stuff

[pastel rivet]

cant seem to be able to get the bounding box Extent of a 3d text

it just returns 0,0,0

[dull kraken]

is there a simple emote system (w audio) one can build, im not sure how to go about it

[stone ivy]

is it possible to change a mesh material at runtime?

im using the Set Material node, its being called but the material on the mesh is not changing

[hushed orchid]

see in youtube about creating dynamic material instance and then setting the material .. this should work

[hushed orchid]

RPC events should do, but i think in marketplace too, there are couple of assets maybe providing this

[surreal peak]

Start with the requirements. Write down how your Emote System should work, what it should all support.
How the Player will actually use it. Doesn't have to be technical at that point.

After you are sure about what you exactly want to happen, you can start looking into how you can get each part of your requirements into UE.

[dull kraken]

thanks, was just thinking the same thing too. going to start and break it down 🙂

[surreal peak]

Yes, you should be able to simply call SetMaterial on the MeshComponent.

[zinc sun]

MAAAAN HOW I DIDN'T SEE THAT? Thank you so much my man!! 🙏

[sweet silo]

how can i make this visible and editable ? thanks!

because i don't have acess

[dark drum]

You could try increasing the mass of the bike or lower the push force of the player on the character movmenet component. Possibly a combination of the two.

[tropic peak]

just figured out that the errors were caused by not having the parent call in begin play

I tried with the mass but it was still moving

the mobility options should work

[main lake]

what do you mean visible ? Like you have no static mesh in the property so that's why it's invisible in the 3D viewport.
That variable on the left, you can't press the eye icon, because that variable is generated for you because it's corresponding to the component you added.

So you can still use it in your blueprint graph to get a reference to it or set a static mesh to it.

[shy river]

Hi all, quick question how can I compare two different size array? Time Slot Array has more elements compared to Test Array. Thanks a lot

[eager thicket]

i removed a camera shake from a camera and it's still being applied to the camera itself. anyone know what's going on?

[copper chasm]

Design Theory question - two checkboxes come automatically checked (and set to not hit testable), the player can click one other checkbox. I'd like for ONLY one other box to be checked. How would you handle it, fine minds of hashtag Blueprint?

I feel like I ought to have made the checkboxes their own widget for casting purposes so I don't have to drag 6 options everywhere

[daring merlin]

Just have an array of them and identify each by their index in that array

[copper chasm]

oh good call

[daring merlin]

By far not the only solution tho

[copper chasm]

well, my solution was a LOT of logic code, and I identified it could be more concentrated, I just couldn't imagine how

[daring merlin]

For this, if theres always only one you can select, store their index in a var, then create a general update function that loops over that array I mentioned, and sets IsEnabled to whether or not the current array index equals the selected one saved to the var.

Click checkbox->store its id->update function

Hope it makes sense, typing from phone

(not isenabled, ischecked or whatever it was)

[copper chasm]

yeah, it does - I was going to do integers, but without the array it was the extra work

[daring merlin]

If later you make it a variable amount of shown options, you can always turn the array (with fixed indices) into a lookup map

[copper chasm]

I am for sure implementing this incorrectly (just kind of thinking out loud like I do) because I'm checking each box in the array to see if it is checked and two of them will be by default - unfortunately I can't just remove the default ones from the array because I'm using a switch on int to track which stats are checked

I guess I can make 3 int variables, set the default checked ones when I check them, then do a != on the 2 defaults

[shy river]

@stable birch can you explain it here please, I do not want to bloat the #cpp channel with blueprint topic

[stable birch]

If you're not familiar with Sets (Ie the data-structure) do a brief readon them

https://dev.epicgames.com/documentation/en-us/unreal-engine/working-with-sets?application_version=4.27

^^UE docs for working with sets should explain everything

[shy river]

okay Thanks a lot!

[trim matrix]

i have a ladder bp set up and i can scale it on the z axis to add length, now that i have it setup i wanna make it actually climbable, when the player hits the collision box they can move up and down the ladder then when they exit the collsion they regain full movement

[ocean gate]

Hi! I'm working on a lock-on targeting system for my 2D game and want to rotate the player's aim by changing values between -1 and 1 on both the x and y axis (just like how movement is handled normally) since this makes it possible to re-use the same code for targeting as if the player was aiming manually. How can I translate the target rotation degrees into values between -1 and 1 och both x and y?

[narrow sentinel]

Anyone know what happening here, the target value is 85 yet for some reason it seems the value goes way past that

am i using the interp to constant correctly ?

I would have thought the door speed would simply speed up or down the interp rather then it pushing the target value just not right

[surreal peak]

Maybe you rather want a Lerp and not an interp?
Interp will try to reach Target while it's active. If your Current Value goes higher or lower from a different place, Interp won't magically stop.

[narrow sentinel]

so i've identified that the duration that the metasound is giving me is -1

not 1

[surreal peak]

Well or that

[narrow sentinel]

question is how would I get duration of the sound from metasound as even though it might not be cause of the issue it's a good thing to look at

[gentle urchin]

Fixed Set of ints

Or array, with AddUnique

[copper chasm]

tbh I might have to retool the whole mf thing

[gentle urchin]

😄

[copper chasm]

Combo boxes got me flustered so I figured I'd try it with checkboxes and that's almost worse

[gentle urchin]

is it alwas 2 checkes, 1 free choise ?

Gues i'd just have a list of checks that follows the ancestry

[copper chasm]

well, the "ancestries" is, the "free" one is 2 free choices

[gentle urchin]

which then are locked

while the others are from avaliable extras

(or mandatory extra, idk)

[narrow sentinel]

anyone ever used the Watch Output that Meta sounds provides ?

[storm solar]

How do I get the actor hit to be knocked back awayfrom where they were hit.
This only knocks them back dependent on where the player is attacking them from. sometimes they will just only move up and not away.

[smoky flume]

Geometry Script - Apply Displace from Texture Map issue
I'm having trouble figuring out this issue. First, I successfully save the image that the player draws using a widget BP to the local storage. Then, I use "Import File as Texture 2D" to load it as a texture—the image loads successfully, and I can display it on a widget. However, the image does not apply correctly to the geometry script node. Any ideas?

[tight pollen]

maybe someone will know >> #multiplayer

[opal bramble]

This isn't doing anything can anyone help?

[tight pollen]

try connect "Started" and "Cancelled" to FlipFlop Input

both

or Started and Completed

[sweet silo]

hi i wanna move spline along Z with up and down arrows

this should be working but i get only movement +1 not -1 why is that? thanks

i get 0 when printing screen on Y

[opal bramble]

better but there is a strange delay

nvm just had to unlink cancelled

[summer bolt]

bump

kinda like a shriknwrap

[shy patrol]

Hey Im using a flip flop to swap between two sequences I want to play out, but whenever the sequence is done I want it to reset to always starting with A and not B. Is there a way to do this or a different blueprint I should be using instead to get this result? any help is appreciated

[desert juniper]

so why use a flip flop if you only want A to play?

[shy patrol]

I want A to play, and then B, and then A again, and so on, but I want it to always start with A, its in a sort of looping sequence

and so when its first triggered I want it to always be A and not B

and then if I could reset it after its done looping

[desert juniper]

a simple way would be with a boolean/int and a select node

idk if flip flops have resetting capabilities.

but if you do it with a select node, you can just create a variable (int or bool. int is more extendable)
your var to the select node. and there you can select which sequences to play

when the sequence is done, set your variable to the opposite of what it is now.

if you do it with an int, then you have more control
0 -> play this sequnce
1 -> play this other sequence
2 -> play this third sequence
and you just increment the variable % #ofSequences once each sequence is complete

and whenever you're ready to restart the sequence playing, just reset the variable to 0

you can also dump the select node and instead just create an array of type sequence

[shy patrol]

alright I think I get what ur saying I will try this and see if it works

appreciate it

yep that got it to work, thanks again

[verbal kayak]

Why is get anim instance writing random montages on get current montage?

[trim matrix]

is there a simple way to so this? i also wanna be able to copy the climbing when hitting the trigger to any other blueprint i wna make climbable

[urban sorrel]

I made a scene in blueprint, some static mesh components and lights, no code. I found it very impractival and would like to move that BP content directly to map. Is there any way, so I don't need to redo all meshes and lights? To unwrap this out on blueprint?

[desert juniper]

you can either create a base actor ladder with a swappable static mesh, or you can create a component to allow any actor to do this

[trim matrix]

id like to do the second but idk where to start

[desert juniper]

look up any YT tutorial for making a ladder in unreal.

[desert juniper]

I don't know if there's a way of breaking down a bp automatically, but next time, you can do it with packed level actors or level instances

[urban sorrel]

Yeah, I found out, but I need to fix this BS 😄

[desert juniper]

you can think of them similar to unity's prefab system

[desert juniper]

yup.. sorry I'm not sure.
you can definitely make a script to go through and fix that for you , but it'll likely take you longer than manually doing it yourself

[trim matrix]

how can i swap the player blueprint being used in a specific level to a duplicate i have

[foggy grotto]

you can configure the default pawn class in the world settings for each level

[astral wyvern]

I'm working on a component so I don't have access to a timeline, what's the right way to lerp a value? I want to lerp, but the change I'm doing happens in one frame.

[tight venture]

Is this safe? I've got a latent function callback using an input variable to the macro call. It works as intended it just feels off...like I'm going to get to a packaged build and it's not going to work as intended anymore 🙂

[hushed hinge]

having some issues with gameplay system
I have an ability that deals a damage effect and applys a debuff effect

But tryActivateAbility doesnt allow me to specify a target

Is there a way to not use events for this? If i have 100s of abilities I dont want to create an event tag for every ability if i can avoid it

[storm vigil]

there is a node like this one 5.5 hehe

[iron idol]

is there a way to add a lot of padding to a horizontal box, but only between the two middle children?

I ran into something similar a while back, but it was because the camera was not directly attached to the skeletal mesh.

might not be the issue since you are not giving a lot to work with. Make sure the camera is actually attached specifically to the thing thats rotating. When you wake up and at it again, if you still can't figure it out ask again in here with as much detail as possible and some code examples

[frozen thorn]

why does my physics handle fling objects around like theres no weight to anything

[surreal peak]

"Use an Interface" - I don't like that part.

That's still a cast in the end, and I have seen too many projects where Interfaces are used ON MASS for classes that will only exist once in form of their class.

People using Interfaces to call Functions on the PlayerController, called BPI_PlayerController and sh*t like that.

Trying to avoid the "Not always loaded" via an Interface is, imo, not the right way.
I'm not even sure if the Reference Chain of the Interface doesn't load the implementing BPs too.

Also casting isn't that bad that one has to start comparing Classes and Tags to know the Type. It's totally fine to cast. If the main reason for the avoidance of the cast is to not load the class when opening the BP that contains the cast, then comparing Classes and SoftRefs is fine I guess.

I'm just really not a fan of people using Interfaces to avoid Casts. For someone who has no idea about this stuff, this is leading to over-usage of Interfaces.
This only really makes sense as a suggestion if Interfaces are fully explained alongside that.

[iron idol]

If you feed widgets to a scroll box, will the scroll box auto scroll with the children by default or do you have to set it up that way

[frozen thorn]

Anyone know?

[viscid remnant]

Hello Unreal community,

I’m trying to implement a smooth transition between standing and crouching using Blueprints in the Unreal Engine Ability System (GAS). I want to achieve a gradual animation of the camera and the player's capsule by interpolating (Lerp) the Alpha value for the transition. I’ve attempted to set up a custom ticking system to update the Alpha value using FInterp To, but this approach is not working as intended.

Additionally, I can't use a Timeline node because the ability is implemented as a UObject. I would appreciate any advice on how to properly achieve smooth interpolation between positions and capsule size while using Blueprints, ensuring a fluid transition even if the ability is interrupted. What is the best way to set up this interpolation in Blueprints?

Thank you in advance for your help!

[prime fulcrum]

hey guys im trying to build a time without event tick and being channeled by an event any help would be great!

[frosty heron]

What's wrong with event tick?

hook this to your custom event

[prime fulcrum]

this is for the cooldown of powers in the game and i need to make multiple and i dont think i can use just one event tick

well maybe with a few branches i could now that i think about it

[prime fulcrum]

it is currently hooked

[dark drum]

I just want to add, what people often miss with interfaces is they too have to be loaded meaning anything the interface uses has to be loaded as well. If the interface is used in multiple places it can make it harder to control when said things are loaded. Granted you should probably avoid using class specific object refs in interfaces though.

As for the image, it's from Ari's myth busting post as part of unreal fest.

[surreal peak]

Yeah I figured that it would load stuff.

Ari's "bust" is more towards if casting is good or bad, not when to cast and when not.

A lot of peole just don't know that casting to a BP class adds a hard reference dependency between the Caster and the Casted.

The flow diagram I commented on is good, just the Interface part itches me the wrong way.

[frosty heron]

You should encapsulate the ability to an object. The timer can be a part of that object.

I would recommend just using GAS tho, such a nice system for abilities

[surreal peak]

Partially cause I looked at a Customer's Blueprints a few days ago, and one of their junior/intermediate programmers that isn't on the project anymore plugged interfaces for literally everything and now it's super hard to even find the callsights and implementations properly.

[prime fulcrum]

sorry but does that work in ue4?

[dark drum]

Yea, the same. I would have possibly said something like consider using an interface with a *. I would probably opt for a base class or component over an interface.

[dark drum]

I laugh because I did this when i first learned about interfaces and very quickly learned what about idea it was. Over using them just makes it so difficult to follow whats actually supposed to happen.

[surreal peak]

They are over and underused.

Funnily enough

If one goes a bit away from UE and its C++ tutorials, and looks a bit more into different Design Patterns for C++ and maybe even C#, then the usage of Interfaces becomes a lot different.

I currently have a bigger Building System which I'm annoyed of that I should have used Interfaces for. But not for Casting Reasons, or for "Multi Parent" stuff.
Mainly to disconnect the actual Implementations from the "Declaration".

I guess it falls into "Multi Parent" fwiw, but it's not a reason such as "I need to interface with Actors and Characters".

[prime fulcrum]

nvm looked up how to do it thanks for the help

[surreal peak]

But rather "I want to be able to make anything a BuildOperation and freely swap them out for Functional Tests etc."

[frosty heron]

@prime fulcrum 4.22 above I believed.

[dark drum]

I guess that's hindsight. What you wanted changed after you were already too deep. I've been there a few times. What's you're building system like? I was thinking about starting one last night after watching Tiny Glade lol. (Probably don't have time though)

[dark drum]

As a non GAS solution, if you need multiple, you could have an array of floats. (or possibly a map) The timer just takes all the values and decreases them by delta time every tick. When you need a new cooldown, you just add it to the list with the starting time. You could include event dispatchers that fire when a time reaches 0 and returns the index (or key) of the cooldown.

The timer would become stop if the array/map is empty. When you add a new one, if the timer isn't active, it'll start it.

[prime fulcrum]

I will attempt this if gas doesn’t work im kinda curious about this plugin

[surreal peak]

It's not very complex in theory. There are BuildModes that can be Activated and those have BuildOperations.
BuildOperations are the actual thing that manages the Building process (claiming tiles is a BuildOperation fwiw).
Reason it's split is to ensure some of the BuildModes can fall back to Claiming Tiles if the player hovers an unclaimed tile, while others are locked into their single BuildOperation.

The problem comes up when starting to split the Operation for Structures into different types of structures and then later noticing that Presets for this cause a DiamondShape 🥲

[dark drum]

Sounds pretty cool. Have you got any dev footage showing it in action?

[iron idol]

If you have widgets in a horizontal box and clear children from that box. Is this effectively the same as removing the widget from parent?

Purely in terms of performance. I assume it does, but wanted to make sure.

[trim matrix]

so i have a signpost actor with a trigger and ive set it up to rigger the ui, but now im stuck, im trying to recreate the text boxes from mario 64/mario galaxy when reading a sign post, i want it to be customizable to have "pages" depending on how long the text is, using my interact input to move through them and then close the text box once the last page is read.

how would i set this up? what would be the best way to handle the text for each message as well

[frosty heron]

knowing how to work with array is a requirement here.

if you never used one, now is the time to start

[trim matrix]

i have i have the array set up, this is what i tried to do, but i am not sure lol

[frosty heron]

this make no sense and a sure mistake

you want to check the length of the message array

so if there's no more message to show, remove the widget else display the next one

and as a side note, having inputs in the Sign post blueprint is terrible

[trim matrix]

ok, i dont know what im doing lol

how do i check the length of the array?

[frosty heron]

drag from the array and type length

[trim matrix]

thats the widget blueprint the signpost one itself only has an overlap and add to viewport

[frosty heron]

that's also bad, normally you handle inputs from your controller

having inputs all over the place will be a debugging nightmare

[trim matrix]

so like this, ignoring the input

[trim matrix]

the rest of them are in one spot

[frosty heron]

test it out

any problem, debug

[trim matrix]

nothing is setup tho, only displaying the widget

[frosty heron]

well set it up then?

call next page on button click or w/e

you are the designer

Interact with Sign post -> Display Message
Interact On Page -> Set Next Page

[trim matrix]

i wanted it to be u hit the trigger, a widget pups up telling u to press the interact input to read it, then the text box pops up and freezes the player till the finish reading it all using the input to move through the text

[frosty heron]

what do you exactly struggle with? try to breakdown your problem one by one

[trim matrix]

how do i set the messages up to fit in the pages thp

[frosty heron]

right now just display the message and go to the next, don't worry about freezing the player

[trim matrix]

evrything after spawning the ui

[frosty heron]

ask 1 question at a time maybe

otherwise it's asking someone to do your homework

[trim matrix]

i have been but ok, i have it set rn u walk up and the ui shows, i dont want that, i want u hit the trigger and it gives u a promt telling u what to press to read, then spawns the text box if they hit the input for it, how do i do that

[frosty heron]

You can shoot a linetrace from the camera from the player everytime it pressed a button (lets say for the sake of example, the E Key)

there's a lot of ways to communicate with what ever the trace hit. One being interface, the other component.

[trim matrix]

im so confused

[frosty heron]

well first, decide on how you want to interact with objects around your world

there are many ways to do it

you will need a solution that fit your requirement

you said you want to walk up and the ui shows, but how? you need to be more detailed

Eg If the camera look at the sign post, a UI show up.
Then you can shoot a line from the camera towards it's forward position and if it hit the sign post, you can show the U.I

Or another interaction on some games, people just walk up near the sign post and the U.I will show up

[trim matrix]

i have been i said, like mario 64/mario galaxy

[frosty heron]

I don't play mario

write it down on paper, or at least give detailed definition

[abstract schooner]

Hey guys!
Is there functionality to use this liek Steam Sessions or something?

Or if not, any tips on how to acieve that? Or what it's called so I can google on it?
It's like the Friends activity ingame?

[frosty heron]

a bit unclear, when the U.I pop up, try to move the camera while keeping the player still. If the U.I still appear even after the sign post is not at the centre of the view, then it's region based, not line trace based

[trim matrix]

?

[agile jolt]

In a state machine how can I wait for an animation to finish before transitioning to the next state

[frosty heron]

actually since you just started, just dive in to make one. If it doesn't fit your requirement, you can also adjust.

Start with this https://www.youtube.com/watch?v=5-UJT4U-jeg&ab_channel=MattAspland

[frosty heron]

Get Time Remaining Ratio

add that as one of the condition

[trim matrix]

i have one set up to press e to interact, do i need to add more?

[frosty heron]

look at the Third Person Template Jump condition if you need more pointer

[frosty heron]

So you already have interact set up? you are confusing me

do you even watch the video, I just posted it

[trim matrix]

i have an input set up thats what i have, w it being used to interact w a few blueprint actors i made already

[agile jolt]

Thanks for the reply - I've tried that but not sure how to get it to work

[frosty heron]

watch the video, in his example, whenever he press a button, it checks for overlaps.
So you can have this imaginary, sphere region around your player. When the player press E, it will gather all the actors that implement the interact interface and run interaction event on it.

[frosty heron]

you should check with something like <=

Also it's time remaining Ratio not the remaining time

So what you can say there is, if there are only 2% of the animation is left, we can move to the next state

[lofty rapids]

is this is an animation bp for a transition ?

[agile jolt]

yes sir

[lofty rapids]

you can just do auto

[agile jolt]

Where?

[lofty rapids]

i think it's auto, but you want it to transition out when the animation is finished right ?

as long as your checking the same one you started

i'm compiling shaders, but i'll post it in a few

[lofty rapids]

if you can interact with others, why not just use the same way ?

atleast to get it started

[trim matrix]

i tried they said having the input is terrible so i got rid of it

[lofty rapids]

but maybe some arrays, where you can split the message up into sections of the array and just loop through the array and the end of the array is the end of the message

[lofty rapids]

i think it was more where it was, you can try the same thing but put the input on the character or in the controller

[lofty rapids]

one way to do interact is keep a variable of what you collide with using collision box, when you collide set the variable to the item your colliding with, then when you hit e check if the variable is valid, invalidate it when you leave collision

but probably some arrays would work, unfortunately you can't have array of arrays

but you could just have a variable on the item itself that you interact with

so a sign would have a variable like document or something that is an array of pages

you could also just have a long string and try to break up into pages automatically

that would be easier to maintain

and add/remove stuff change page size

i would definately try to break up a string, this way you have much more flexibility, a little more overhead because you need to translate it into a new array and break it up, but much better imo

where you would just say pageSize = amountOfCharacters

[trim matrix]

well i attempted to follow the tutorial and now i just get an erorr

[lofty rapids]

whats it say ?

[trim matrix]

it fixed now, but pressing my interact input does nothing lol

[lofty rapids]

so the widget isn't popping up ?

[trim matrix]

no

[lofty rapids]

show where you have the keypress

[lofty rapids]

show the interact event

or function

[trim matrix]

this?

[lofty rapids]

ok so that is the definition in the interface

but you need to implement it on the item

[lofty rapids]

thats just a custom event

you need to implement the actual interface function

[trim matrix]

thats what it made

it wont let me drag it into the graph

[frosty heron]

you don't

[lofty rapids]

try right click, search interact

[trim matrix]

i do it, it errors then made a custom event instead

[frosty heron]

screen shoots the video where he add the interaction interface

if you found it, you should already have your answer

[trim matrix]

i followed along w the video

[frosty heron]

that's not what he does tho

[trim matrix]

im just going to start unreal

restart

[storm solar]

Any idea on how to have a character be knocked back, away from the attacker when hit?
The second picture kind of works, but if the person about to be hit and knocked away is starting an action, they'll rubber band back towards the player.

[frosty heron]

I never need to restart unreal to add interface

[trim matrix]

congrats, i often need to restart it to fix node issues

[frosty heron]

just make sure the actor implements the interface, if it does, you can look on the override function, the list of interface functions

[frosty heron]

such as?

blueprint is pretty safe for the most part

[trim matrix]

things erroring for no reason

its happend before, or shit will freeze

i have this now

[frosty heron]

you will probably want to interrupt the montage, or at least don't enable root motion

just don't apply root motion on knocked back montage and nothing should be fighting it?

[frosty heron]

surely not because you restart

most likely just haven't hit compile

[storm solar]

for the attacking animation I want root motion to be enabled as that allows attacks to move the player.
The player getting hit is getting their animation interrupted to a different animation.

[lofty rapids]

compile, save, compile save, etc...

[trim matrix]

i did restart.... but ok

[lofty rapids]

so now atleast the widget is showing ?

[frosty heron]

You simply haven't hit compile. Save your self sometime before praying restart fix things next time.

[trim matrix]

yea it shows now when i hit interact, and then stays on screen

[frosty heron]

Don't see any rubber band from the video

[frosty heron]

well only this logic is run when you interact with it

[lofty rapids]

so before you get "pages" to work i just make it pop up a message that you can exit out of

so then you have a popup with a message, and you can work pages in there

[storm solar]

first attack in the video. The enemy flies backwards than forwards.

[trim matrix]

how do i make it exitable

[lofty rapids]

one way is to create the widget if a reference is invalid, and if the reference is valid remove it

so you create a variable and set it to the return value of create widget

if it's invalid

[trim matrix]

so make anew variable thats a reference to the widget and use that?

[lofty rapids]

and run it on interact

so that if it's valid, you invalide it and remove it, this way the next interact

it will open up again

idk if remove from parent "deletes" it

or if your creating a bunch of widgets

[trim matrix]

put it before create widget or after?

[lofty rapids]

wdym ?

[trim matrix]

or move rthe create widget to there bc i have a few

ohhh ok nrvmind one sec

[lofty rapids]

replace the logic with your logic

just do the isvalid and remove set

and replace the create widget stuff with your create widget stuff

it's not really copy paste able, it was just a demo to show how you can do it

[trim matrix]

so this?

[lofty rapids]

ya but your lines are wild, you should make them overlap less

[trim matrix]

ik its jsut bc i was movingf them around

soo now what do i do

[lofty rapids]

but that should work

does it open and close ?

[lofty rapids]

oh wait you missed something

you need to set the variable after you create to the return value

and don't cross execution like that

it's usually not a good idea you can get some invalid values

[lofty rapids]

set it to the return value

so that it's valid

[lofty rapids]

try that

[trim matrix]

it goes away but dosnt let me read the sign again

[lofty rapids]

because you set both

you only want it valid on one execution

the one where you create

you want it invalid after that so set it do nothing

when you remove

you set both to a valid state

[trim matrix]

oh ok

[inland jolt]

is there a way to improve performance in a huge blueprint? each time I connect/disconnect/swap something out, there's a 2-3 second stutter

[trim matrix]

its letting me now

[lofty rapids]

so you can open and close it ?

[trim matrix]

yea

[lofty rapids]

is the placeholder text hard coded in the widget ?

now i would make a couple signs and see if they all work just because i like to test things lol

you can add a variable for the text

so that each sign has it's own variable set to a certain text

[trim matrix]

yea i kinda wnated it to have the widget be set with prewritten mesages and when i place a sign i can pick what message it will show to the player

adding multiple signs breaks it a little

after reading them in a row the widget no longer shows

even tho i have it to go away when they hit the input again, if u hit another sign when theres still naother one active neither will go away

[lofty rapids]

make sure they are spaced out enough that your not overlapping two

[trim matrix]

they are

[lofty rapids]

so i don't know why thats doing that lol

but in any case what does update text page do ?

[trim matrix]

nothing rn, i didnt get that far

[lofty rapids]

i would assume it would just switch considering the ref is a local variable to each sign

[trim matrix]

its not doing it now as long as u finish the text box u started at the same sign instead of interupting it w another

[lofty rapids]

i can see what would happen you open one up, then leave, it's not in the overlaps anymore

so when you loop through your overlaps to interact when you press the button

it doesn't interact with the first one because it's not overlapping so it won't close

[trim matrix]

ah

[lofty rapids]

probably if you interact then move out you can't close it

you need to be overlapping

[trim matrix]

well the freeze movement will fix that later once the messages are working

[lofty rapids]

right, you can do that with pretty much a boolean

[trim matrix]

the freeze have a isreading bool?

[lofty rapids]

i usually call is something like canMove

and just switch it true/false

[trim matrix]

do i need to setup the text and pages first?

[storm solar]

any idea on how to trouble shoot this. root motion isnt on the hitstun animation.

[lofty rapids]

possibly with a variable as a state, that transitions and runs the knockback in your anim bp @storm solar

[lofty rapids]

i don't think it matters which order you do that in

[trim matrix]

so after the interact event set can move to false

[lofty rapids]

and in your movement only actually move if canmove is true

[trim matrix]

where am i putting it tho im confused lol

[lofty rapids]

put it on the character

just a boolean

do you know where your movement input is ?

[trim matrix]

and then plug into the overlap for the sign trigger?

[trim matrix]

character blueprint

[lofty rapids]

first thing you need to do is actually have a boolean that can stop movement

you can just set it up and test it

by setting it to false and so you can't move

[lofty rapids]

but inside you character bp, where you move

just use a branch on the execution

that only runs if canmove is true

[trim matrix]

like this

[lofty rapids]

right, then switch it to false and see if it works

see if you can't move

[trim matrix]

i can still move

[lofty rapids]

if can move is false

and you can still move then it's not on the right execution

or you didn't compile and save everything

[lofty rapids]

ya that should work

if can move is false

[trim matrix]

it works now

[lofty rapids]

compile and save before you run

but you can set it to true so you can move

but now you know it works so you can figure out the way to implement it easier

without having to worry if that actually works or not

you need a reference to the player

are you going to have multiple players you can choose from ?

is it multiplayer or single player ?

[trim matrix]

single player but theres levels with different player blueprints, some levels are 2d sections, some are like super monkeyball but only the main platformer thirperson blueprint will be interacting w signs

[lofty rapids]

so you need a reference to the player

in your sign, so you can set canmove

one way i do that is on begin play of the sign, get player character, cast to player, promote to variable

you'll need to cast

i like to do it once on begin play

but you could do it in the interact it just makes more sense imo not to

but ig it doesn't really matter

[lofty rapids]

you need to cast

then promote to variable

i just fixed the text, i missed that part my fault

[trim matrix]

cast on begin play?

[lofty rapids]

from the get player character return value

cast to your third person character

then promote to variable

so that you have that bp and can access it's variables

[trim matrix]

this?

or this

[lofty rapids]

the second one

[trim matrix]

ok

[lofty rapids]

now you have the character in a variable so you can set canmove

get the character ref, drag out set canmove

[narrow sentinel]

so i have a question if I have a wav that is 15.7 seconds long and I want the interp to constant to match then length in terms of it takes 15.7 seconds to get to it's target what math would I do

[trim matrix]

execute it after the charater ref or in the interact

[lofty rapids]

so when you want to stop it is when you interact, and turn back on when your done right ?

[trim matrix]

yea

[lofty rapids]

so just put it in the code in the proper places

[narrow sentinel]

I've tried doing door speed / The amount to travel and the other way around but I either get it being too quick or well too slow

[trim matrix]

ok

[narrow sentinel]

like on extreme to the other

[trim matrix]

ok thats working now

am i also able to lock the camera when the player freezes?

[lofty rapids]

yes you can use the same variable or make another one, just put it on the execution of the camera movement

[trim matrix]

ok

ok thats working now

[narrow sentinel]

anyone able to help with my issue please ??

[trim matrix]

now how would i setup the text, ik i could make the array but am i able to make it so i can select what text from the array each placed sign uses,

[lofty rapids]

you could have an exposed variable something like selection that is the index

and when you begin play, load that index of the array

i'd probably put the array in game instance

[trim matrix]

how would i do that

[lofty rapids]

did you start with a template ?

you can just create a new instance

it can be empty

then you set it as your instance in the project settings i think

[lofty rapids]

create a new game instance class

[trim matrix]

i used the third person template

[narrow sentinel]

I love when chat gpt constantly tells you something that doesn't work at all, please anyone able to help

[trim matrix]

ok i did that

[lofty rapids]

if you want over a period of time why you need interp, maybe a timeline or timer @narrow sentinel

[narrow sentinel]

i'm doing this in the Anim BP

you can't use timeline in their

[lofty rapids]

now set the project game instance class to the one you created

[narrow sentinel]

I can use set timer by event but still how would that would cause I'd need to still ensure the door bone ends at right place

[lofty rapids]

this is your instance ?

[summer bolt]

like a shrinkwrap

[trim matrix]

yea

[lofty rapids]

now you can place variable in there as an example just make an array of strings

and populate a couple of messages

[lofty rapids]

now at the bottom right add a couple brief messages

[trim matrix]

added

[lofty rapids]

on your sign begin play

get game instance, cast to your instance

and promote to variable

[lofty rapids]

now you have access to that array through that reference

you know in your widget where you hard coded the message ?

now you want to actually set it

luckily you already have a reference to the widget

[narrow sentinel]

so lets say I did it with a timer, how would I use that in my situaion cause I still somehow need to lerp or interp the current bone loc to it's target loc at the duration of the wav playing

[lofty rapids]

i c so you want to open a door to the exact time of the wav sound ?

[lofty rapids]

in your widget, mark the text box as a variable at the top right check box

and set the name to something you can remember

[trim matrix]

in here?

[lofty rapids]

well thats a way to test it

but i wouldn't do each page is an element of the array

this would require a bunch of different arrays

and you would have to determine which one you want to use

[trim matrix]

thats what i originally had i can redo it for what is now made

[lofty rapids]

i would make each message just an index in the array, and try to break the message up into pages later

[trim matrix]

ok, so drag in the array from the sign instance?

from the instance*

[lofty rapids]

get game instance, cast to your instance, then get the array

but since you already did this

just use the reference you made on begin play

[lofty rapids]

yes from the instance

the reference you made on begin play

drag out and get array

[lofty rapids]

you don't need that

you already have a reference

[trim matrix]

oh

[lofty rapids]

here as game instance

use that

[trim matrix]

do it ther or in the widget

[lofty rapids]

since the text box is a variable

and you have a reference to the widget

i would just do it on interact

load the proper message

[trim matrix]

im confused

this?

[lofty rapids]

since your using update text page then ig yes, you see where you have messages ?

and you where using that array ?

just switch it out with the array in game instance

[trim matrix]

i cant get teh array from the instance it wont let me

wow spelling

[lofty rapids]

wdym it won't let you ?

[trim matrix]

it dosnt let me get it, they dont connect

[lofty rapids]

you drag out from game instance

and get the array

[trim matrix]

i did

[lofty rapids]

and it shows the array ?

[trim matrix]

yea, then it dosnt connect

[lofty rapids]

connect to what ?

[trim matrix]

it says is not compatible

[lofty rapids]

what are you connecting to ?

show it

[keen sun]

Is it possible to call the completed delegate with auto blend out disabled?

I want to hold the last frame but also call a deligate that tells it's working

[lofty rapids]

you should probably look into nodes and how there variables work, thats not what you want to do, i mentioned it a couple times you drag out from the instance and get the array

[trim matrix]

and i did that and thats all it did

[lofty rapids]

delete those two nodes

drag the as game instance from the left onto the graph

what does that look like ?

[trim matrix]

u said to do it in the widget, the as game instance is in the sign

[lofty rapids]

no not in the widget

in the sign

thats probably why it's fkd

the widget all you need to do is set the text box as variable

[trim matrix]

thats why i asked

[lofty rapids]

in the sign you have all the refernces you need, and is where you interact

[trim matrix]

still wont let me

[lofty rapids]

well thats how it works

you drag out from the game instance

and get the array

you shouldn't be connecting anything

you "drag out" and "get array"

it will auto connect it

and create the node

replace "array" with the name of your array

[lofty rapids]

show the array in the instance

on the left side

[trim matrix]

?

[lofty rapids]

maybe make it instance editable but it shouldn't matter

[lofty rapids]

thats weird what does the note say on the cast to your game instance ?

[trim matrix]

says i dont need to cast

[lofty rapids]

you cast to game instance,

cast to "your" game instance

the one you created

should probably look into casting a bit as well

and how that works, because your probably going to use it a bit

[lofty rapids]

there it is nice

[trim matrix]

i usually have only used casting to my character still learning

[lofty rapids]

ya you want to cast from one thing to another, if you want the specific variables you need to cast to that specific class

[narrow sentinel]

should the elasped time of a timer jump back and forth from and two or simply increase with the time the timers is running ?

I'm trying to do this using a timer and thats whats happening

[keen forge]

Does anyone know why my train blueprint lags my game down to 10 fps everytime i move it in the editor?

this is when i move it around

i have tick and everything disabled

static lights in it.

[trim matrix]

so after getting the string array what should i do

[lofty rapids]

well you want to select the proper message so you need to pick an index, i would test it by hard coding an index

set the text, to the message at that index

getting it to do pages will be the most difficult part, just popping up messages isn't to difficult

[trim matrix]

im confused a little

[lofty rapids]

but you'll need to build a function i won't walk you through that

[trim matrix]

so a set text node?

[lofty rapids]

ya

drag out from the widget reference

get the text box that you set as variable

then set text

and pick an index

the index is where you may be able to set a variable on the sign

so each sign you can just say get index x

0,1, etc...

[trim matrix]

it wont let me set the text variable

[lofty rapids]

you don't set a variable

you set text

drag out from the widget

get the text box

then drag out from that and do "set text"

[trim matrix]

i have, it wont let me

[lofty rapids]

you already had it in your update function

it's the exact same thing

[trim matrix]

thats in the widget

[lofty rapids]

with the widget ref

it's the same thing as if in you were in it

show what you have that isn't working

[trim matrix]

im using the widget ref, its not connecting to the set text node after i drag off the text in the widget

[lofty rapids]

i think thats wrong set text

there is another one

[trim matrix]

its the only one that comes up

[lofty rapids]

so when you drag out of messagetext you only get one set text ?

[narrow sentinel]

Anyone able to give me any insight on how to do this as I tried with a timer and didn't work, the elasped time of the timer was jumping around and then I've tried with using delta time which seems to not work either the door seems to rush to the target then lerp correctly

[gentle urchin]

This is for render component ..

[narrow sentinel]

thats what I was doing when I tried the Timer method

[trim matrix]

i only see one period

[narrow sentinel]

and thats what I was doing when trying the delta time method which was plugged in on left hand side on the +

[gentle urchin]

Timer and delta (tick) would work equal here

Elapsed counts upwards aslong as you dont reset it

[keen forge]

Could anyone help me with this?

i am baffled on why this happens

[lofty rapids]

you want the one under content

[gentle urchin]

Show the type of your variable

"MESSAGETEXT"

[gentle urchin]

There we go

[trim matrix]

what ab it?

[gentle urchin]

Different type compared yo engage, it seems.

[trim matrix]

its a reference to the text in the widget

[lofty rapids]

thats it

thats the one you want

i think

[trim matrix]

idk none of the others would connect

[lofty rapids]

type in some hard coded text and run it

see if it changes

[gentle urchin]

Youd want the function if its a widget text block

[trim matrix]

where am i putting the set text node at tho

[lofty rapids]

well for one thing instead of dragging from the set of the third person character, just get the variable in the two places you need it, so your not crossing execution

[lofty rapids]

but you have two paths, valid and not valid, when you create the widget, before you show it, set it's text

so that the text loads up when you load the widget

but don't use the reference, just drag straight out from the create

or set the reference first, and then use it

[lofty rapids]

right like i mentioned don't use the ref

drag straight out from create

[trim matrix]

just saw sry

it shows the message now

[lofty rapids]

so now just get one of the messages from the array

and you got a good start

[trim matrix]

how do i select a specific one from the array?

how do i hook the array up to the set text?

[lofty rapids]

look at the function you made update text, you get a value based on an index

[thin token]

is this bad for game performance

[rancid hull]

anyone know how to make a rope shoot from the player and connect to a walk but whatever length you shoot it at is the max length i tried using all sorts of things i used a line trace then get hit result i made that a variable called grapple point i even set up a cable to connect to look like a rope but now heres my problem i tried attaching a physics constraint to the impact point and character it didnt work i also tried connecting a spring arm and that didnt work i want it to be ablle to attatch anywhere the line trace hits while have a simulated physics falling and swing up like a pengelum

[lethal tapir]

A high amount of nodes does not constitute a performance problem in itself, more how often it runs, and the complexity of the math inside it.

[lunar sleet]

And there’s probably a much better way to do whatever the hell that is

[thin token]

multiplying two 3x3 matrices

[lunar sleet]

#game-math

[thin token]

?

[lethal tapir]

tbh if you really want to know how much the performance impact of your blueprint is at runtime, use the tools inside unreal hehe

[gentle urchin]

they're there to be used, for sure

[thin token]

is there a matrix type built in?

[gentle urchin]

yeah

[fading swan]

just so u kno :

don't tick this lil mf off

or your character will start crouching in the ground and float

[vivid quarry]

nvm earlier post

[faint pasture]

how often?

[hushed hinge]

I am using a Controller -> AI Controller -> Character to move a guy around with AI Move To

However, for some items that the player can click to move to, if they are within an acceptance radius id rathert they just look at the thing than move to it

I can use LookAt + RInterp to etc but i was wondering if there is an easier way with the movement component to just turn my character in place

I dont think I want to use controller rotation because 90% of the time, I want movement to drive toration

[sudden nimbus]

without using controller rotation, no there is no easier way- assuming you are using BT i would make a BT task for Look At that does the rotation / interpolation and just call that after your Move To node

if you are using controller rotation, youd want to use SetFocus / SetFocalPoint

[hushed hinge]

if i use controller rotation with focal point is there an easy way to still let the movement also control the rotation when moving?

[sudden nimbus]

youd have to toggle it on/off or something if you want that -- theres no trick of it

[thin token]

like once or twice per frame

[hushed hinge]

ill just set the focal point on every move

¯_(ツ)_/¯

@sudden nimbus manually managing focal point is working great thank you

[faint pasture]

I mean it is what it is but move this to C++ if anything

You can do it super easy

After looking if there's a BP matrix multiplication first

what is that PhysicsComponent?

[tropic peak]

I have a very bizarre issue. I have a camera actor that follows the player, the camera position gets updated when movement input action is triggered. When it's triggered I start a "set timer by event" on a 0.001 loop so it updates when the player is moving. When the player stops moving, there is a 2 seconds delay after which the timer gets invalidated

However it looks like there's a 1-2 frame skip exactly when I let go of the movement keys

It's barely visible in the video, and I bet 99% of players wouldn't notice it but it's driving me nuts.

[faint pasture]

Why do all that

[tropic peak]

to avoid event tick

[faint pasture]

What's wrong with tick?

[tropic peak]

I'm trying to not use it whenever I can

first, learning experience, second, performance (somewhat)

[faint pasture]

You want your camera to be moved to the correct place each frame. Tick happens each frame. Put it on tick. If you're concerned about wasted work, first off, don't. Second off, you can turn tick on and off.

The timer is probably worse performance. You're running it many times per frame, maybe. I don't remember the specifics about setting a timer faster than tick is.

But putting the camera in a valid location on tick is 100% fine. That's how literally everybody does it. That's the correct way to do it.

[tropic peak]

even if it's inside of a player controller?

[faint pasture]

Sure

[tropic peak]

(don't know why it wouldn't be, but I'd rather ask)

but yeah I tested it with tick earlier and it worked just fine.. might as well..

[faint pasture]

Problems come from doing stupid or unnecessary stuff on tick. Moving your camera on tick is pretty necessary.

[tropic peak]

yeah.. it is 😄

by the way, do you know a way to "offset" the charecter directional movement? I'm trying to create an isometric environment and WASD doesn't quite represent UP/LEFT/DOWN/RIGHT, it's angled because the camera is angled

[faint pasture]

Probably just put it in world space

Instead of basing off camera

[tropic peak]

uhh

[faint pasture]

X = W - S
Y = D - A

[tropic peak]

I don't think I understand

[faint pasture]

Show your input nodes

[faint pasture]

Literally just turn that 2d vector into a 3d vector and feed it as the movement input vector

Drag the blue thing into the yellow thing and see what happens. Scale value should be a constant 1 in this case

[tropic peak]

did you mean this?

[faint pasture]

Probably not. What is that node, the dot product?

[faint pasture]

Oh okay cool. I'm guessing that float is the

In that case, just plug that directly into add movement input, set the scaling to one, and that's it.

[tropic peak]

it didn't really do anything

[faint pasture]

Show current code

[faint pasture]

Plug the output of that conversion node straight into the add movement input node

You can delete 75% of those nodes

[tropic peak]

yeah inputs are a bit difficult for me to understand

[faint pasture]

The input node is spitting out a vector 2. You want to convert it to a vector3 then feed it to add movement input. Then WS and AD will map to direct world directions. Press W, move in X

[tropic peak]

like this?

[lethal tapir]

I got a small issue, everything is working perfectly, yet this referenced sound will not play, but if i play it once in the content browser, it will start to play at the given moment in runtime, until i restart the editor again.
My guess is that i have to async load some assets as the component gets active, but im still kind of curious why other sounds handled the same way is played normally without this issue.

[vital cargo]

I'm having trouble here. How do I create an Interface (in C++) callable from BP's?

I can't add BlueprintNativeEvent, BlueprintCallable with Virtual in front of it as "BlueprintNativeEvent shouldn't have virtual in front of it" but for me to update the value from my Character class it needs Virtual & Override on the character. Unless I just don't understand Interfaces in C++.

[tropic peak]

Well that didn't quite work, but thanks

[vital cargo]

Sorted it out, solution :
Add _Implementation to the function name within the actor calling it. Then include Virtual & override as normal.

[rancid hull]

how do i connect a physics constraint from my player to a impact point on a line trace im so lost,.

[hushed hinge]

can any gameplay ability system wizards help answer my question in #gameplay-ability-system

[faint pasture]

Are you sure a physics constraint will do what you want it to do?

Grappling hook I'm guessing?

[rancid hull]

yeah i wanted it to be physics based

i assumed a physics contstraint would work

if i apply propper limits

[faint pasture]

Is your character already moving around physics based?

[rancid hull]

no but when i set my variable is grappling i make it so the movenment mode is falling and i add force based on a number of factors

i was hoping when i set my is grappling to true i could set it to be physics based and when im not then set back to regular movement

i have a simple line cast grapple point system but i want to stop falling when i reach the length of the max distance from my impact point

i tried applying small amounts of force to differnt location depending on variables

to counteract the speeding up

and falling dow

[faint pasture]

Why not make one of those factors how far you are from the grapple point?

[rancid hull]

i did

[faint pasture]

That should be enough to grapple

[rancid hull]

i can grapple no problem

just not stay still

[faint pasture]

so what's the problem

[rancid hull]

when i hang

[faint pasture]

gotta dampen

[rancid hull]

i dont know how i would dampen it

ill show you my code

[faint pasture]

is there anything in your settings that can give you air friction?

that's what you're aftyer

if not, just do it yourself

Force = ForceFromGrappling + Velocity * SomeNegativeNumber

[rancid hull]

so i could apply air friction would that stop me from going down after hanging

[faint pasture]

won't stop

just slow

wha'ts the problem, you never stop swinging?

[rancid hull]

i want it to be so when i continue to hold the grapple button i fall into the wall or object im attatched to and dont move

and dangle

so if you had a rope attatched to a bar in the sky and you let it go

it would run out of momentum and stop swining

swinging

[faint pasture]

show a clip, I still don't know what it's doing vs what you want it to do

[rancid hull]

ok one sec

this is what i want

ill make it a mp4 one sec

[faint pasture]

i was able to watch it

and what do you have?

[rancid hull]

oh ok

let me record that

[faint pasture]

The problem is all in your force math

Tick -> calculate distance -> calculate speed (for damping, dot product of velocity and direction towards grapple) -> cook up spring strength (map range on Distance - RopeLength) -> cook up damping strength -> Force = DirectionTowardsGrapple * (Spring + Damping)

Bonus, to "reel in", you can just change RopeLength over time, that's it

why is world location involved?

Do you want the force to always blast you towards world origin?

[rancid hull]

Sorry im back

thx

ill try it

[inland walrus]

Anyone know why even though they have 2 different values, they still the value of only one?

[rancid hull]

you're probably referencing the original in your code or only one

[storm solar]

been looking at this on and off all day. Anybody know a concrete answer to this?
https://www.reddit.com/r/unrealengine/comments/1g21r0s/character_knock_back_rubberbands_them_if_there/

[inland walrus]

How do I reference them seperately?

[rancid hull]

well how did you refrence them in the first place

in your code for the text i assume you made the function for where it gets that number from

probably in the widget

bp

@inland walrus

[inland walrus]

Hey sorry my ue crashed and I was just recovering it all

[rancid hull]

Love unreal haha

[inland walrus]

Yup xD

[rancid hull]

click on that hero health node and set it to instance editable

the variable

idk if that wil do it but try it rq

it alr is nvm

[inland walrus]

yeah

[rancid hull]

idk it might be your reference

you got the class

you could try get all actors of class

or use cast to

then the name

on your even tick in the text render 2nd image

youre setting the health stats

try setting all the variables on the text renderer to instance editable

but on that event tick whats in that function why doesnt it need a refernece to the player

[inland walrus]

the text renderer isn't what I'm using that was just a tester, Im using a widget

[inland walrus]

I am unsure

[rancid hull]

then why is it a variable being used in the player

you might need to go into the function and change its inputs

to the widget

[inland walrus]

It was just a test one

[rancid hull]

so wheres the current new one

[inland walrus]

uhhh

[rancid hull]

im sorry thats a premade function mb

[rancid hull]

yeah idk

there isnt much code in there so just experiment im sorry idk what it is

[inland walrus]

Alright

[inland walrus]

bump

[warped juniper]

Would you reccomend using a forced movement on a character instead of Motion Warping in order to not rely on root motion added onto animations?
Of course, it's not hard at all to edit a root motion value in Unreal, but I would prefer to control those things with code rather than animation data.

[hushed hinge]

does it make sense to dynamically change between use control rotation and orient rotation to movement if i need to turn in place for some actions, and for movement i want to use the movement rotation

added an example, when in attack range i use set focal point to aim at the character so i can turn in place using character movement component

But when hes walking around trying to get to a location to auto attack i dont want him pointed at the character i want him to move normally, also if just doing more complex pathing I dont want him just staring where he wants to go, but where hes going

[gaunt ether]

Hello, I am making the portal gun from rick and morty, and to test out the teleportation I am making the player character teleport to the random coordinate I input, but the character wont teleport for some reason. Another thing thats not working is my character wont physically interact with the portal. Any help would be so awesome.

[warped juniper]

You are teleporting the controler, NOT the actual actor of your player

You want to get the actor either with Get Player Pawn, or getting the overlapped actor to teleport that.

Ideally you wanna filter out what type of actor you telepor though, otherwise anything can be affected by it.

[gaunt ether]

I just plugged in Get Player Pawn and nothing changed, and I made sure to see if the BP_Character was actually colliding with the portal by printing a string, and the string didn't appear, which means these two actors (Portal and character) aren't colliding. The Portal's collision is set to "trigger" and the character's collision is set to "character". Any more ideas?

[lunar sleet]

Always show updated code

also, I've seen Teleport have some issues. You can just use SetActorLocation though