blueprint

[manic vessel]

help!.. I have just started to try and use MAP Variable's and Im not sure if what Im trying to do is what they are for?. Im trying to spawn the correct ammo actor for the Held gun, But Im just spawning another gun . what Am I doing wrong .

[dawn gazelle]

Use a FIND with your map. You can do GetClass of the weapon like you're doing, and feed that into the find. The output will be the value (or ammo class you've defined for the weapon class)

[manic vessel]

like this?

or this

[dawn gazelle]

second one

[manic vessel]

ACE

Thats such a useful trick

Such Simple code but big results 🙂

[trim matrix]

so i can now spawn the ragdoll npc, but it collides with my character, causing it to move upwards very fast

so, literally the right idea, wrong direction

[mental trellis]

Use the character's forward vector as the basis for your offset

[dawn gazelle]

I believe that's because you're missing quite a bit of code from this function.
Adding an item to your inventory and getting it to stack up means you need to first see if you can find a stack already in your inventory.

If the stack is there, add the quantity you're picking up to the quantity that already exists in the slot that has your item.

If it's not found, then you have to add it to the first empty slot.

[vital aspen]

well I know that. The idea is to learn what I can about inventories.

[runic parrot]

This are the steps i needed to check on my inventory when adding an item, the logic behind is going to change and you also may need to change the steps depending on your setup. But it's good for a basic idea

[vital aspen]

I know, I all ready have all of those in functions. Something went wrong when I change my inventory around back to slot based. I was having too mean issues. Any way. I'm starting to put some if it together to see if I can get some of this crap to work.

[gentle urchin]

You could make it recursive

To handle the overflow

Wait nvm.

Thats some setup

[vital aspen]

can anyone tell me, is this the right way to find a stack.

[gentle urchin]

Didnt see the overflow down on the right

[vital aspen]

the other haft

[gentle urchin]

Looks fine

Pro tip: you can exit a loop early by calling Return() in the loop body

[vital aspen]

it seems to be passing info ok.

[gentle urchin]

Ye it does

Just feels cleaner 😄

[vital aspen]

if it finds a stack, It add to stack

[gentle urchin]

Also

[gentle urchin]

Consider what data you need on the outside

[gentle urchin]

Do you care about stack amount ? Or just how many is left to be stacked

[vital aspen]

last 1

does that look right

[gentle urchin]

yepp

looks fine

recursive one

[vital aspen]

any idea why it doesn't seem to want to work. ???

it's passing info right

[gentle urchin]

Somethings wrong 😛

Cant see it from what you showed tho i think

[vital aspen]

Yes, sorry about that. More images coming up

[gentle urchin]

this is what i ment btw

not important

but

[gentle urchin]

These two ways of doing the function will work identically , just with less wires

[vital aspen]

I hope the larger 1's will help

last 1

[gentle urchin]

It looks a bit weird

to recursively add to slot

yet return the remaining amount ?

recursive methods are confusing like that i suppose

hard to read, easy to loop , many pitfalls

[vital aspen]

I just checked my notes and some samples. This is the right way to do this.

[gentle urchin]

I guess there's nothing wrong then x)

[vital aspen]

is there another way to check for stacked items

nothing wrong and it doesn't work ??? so figure that 1 out, ???

[gentle urchin]

Logically those two statements cant be true

they are exclusive to one another

[vital aspen]

this is just too pinned for me to under stand what's it doing

i don't think the find stack is working all so. i need to find another way

[desert owl]

So I tried using the "was recently rendered" node to detect if an actor was on screen (^blueprint for that^). but its ticking true when i'm not looking at it, as if its still being rendered. doesnt tick false until i get far enough away. Is there a setting i need to fix somewhere?

[gentle urchin]

what are you trying to do?

[desert owl]

I'm making an interaction system thats based on the object being on screen. I need it to tick false when not looking at it as it should.

[gentle urchin]

Ah

I did a c++ function for that

[desert owl]

This should work, but its still rendering when not on screen for some reason. I might need to install UE4 to make sure that UE5P1 isn't the issue.

[gentle urchin]

Pretty sure it doesnt work as you think it works 😕

[desert owl]

That's possible, saw a YT video of it and I tested a simple was actor rendered with tick and that didn't work like it did in the video.

[gentle urchin]

I suppose you dont do c++ code either

[glass stump]

how do i get a door to move when I click a button in a widget? (been trying to figure this out for like an hour....)

could be a #umg question but i figure it's more to do with blueprints.

[desert owl]

Nope, not yet. lookin like i might have to learn soon

[gentle urchin]

this should work

If you wanna dare yourself out into c++ , this would be somewhat the equivalent code

//.h file
// the Horizontal and Vertical Offsets are there for tolerance from screen edge, but can be skipped if you dont need it / care for it.

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Perception")
        static bool IsLocationInViewport(const APlayerController* PlayerController, const FVector Center, const FVector Target, const float HorizontalOffset, const float VerticalOffset, FVector& DebugLocation);

//.cpp file
bool MyActor::IsLocationInViewport(const APlayerController* PlayerController, const FVector Center, const FVector Target, const float HorizontalOffset, const float VerticalOffset, FVector& DebugLocation)
{
    FVector2D ScreenLocation;
    int32 SizeX;
    int32 SizeY;
    FRotator tempRot = FRotationMatrix::MakeFromX(Target - Center).Rotator();
    float fA = FMath::GetMappedRangeValueClamped(FVector2D(0, 180), FVector2D(5, VerticalOffset), tempRot.Yaw);;
    FVector TestLocation = (Target + (tempRot.Vector() * HorizontalOffset)) - FVector(0.0, 0.0, fA);
    UGameplayStatics::ProjectWorldToScreen(PlayerController, TestLocation, ScreenLocation, false);
    PlayerController->GetViewportSize(SizeX, SizeY);
    DebugLocation = TestLocation;
    return ScreenLocation.X > 0 && ScreenLocation.Y > 0 && ScreenLocation.X < SizeX&& ScreenLocation.Y < SizeY;
}

[desert owl]

Sigh... Time to watch some C++ videos... I'll save this in a txt in the meantime. Thank you!

[cursive girder]

Is there a way to debug material functions?

like see what math its doing as its running?

[gentle urchin]

bp version works fine, just not as performant i guess

[cursive girder]

I've got a material function that is supposed to do Line of Sight using PostProcessing, the mask for it looks good, but the world never gets masked.

[desert owl]

Might just use that for now then.. buy myself some time.

again thank you!

[gentle urchin]

No worries. gl

[fair magnet]

Am I allowed to ask:
Why you save the index to a tmp variable? why not return it directly?

[odd ember]

how dare you

but yes you could actually do that

returns are treated as implicit breaks

[fair magnet]

My version...

make it a >= 0 instead... sorry my bad

[vital aspen]

I'm getting there. I made some changes. Still doesn't work like it should. See what is doing

anyone have an idea why the numbers are all messed up

[minor wolf]

looks like you are rendering more than 1 text in the same spot

[vital aspen]

I fount 1 spot that did. I removed that 1

[thin panther]

1? those are all doubled up

[vital aspen]

yes. i know. there has to be more some where

Hmm, It still does it even after I remove the 1 set of pins. I don't get it

Ok, that looks better.

'The stack size is wrong. It should be 5 for logs

Now I just have to fix the end less loop error

anyone have an idea why ??

This is in some kind of a loop. and I have no idea

[dawn gazelle]

It's whatever may be calling this function that is probably in a loop.

[vital aspen]

Add to Stack

I think it mite be the math in the Add to stack. It doesn't look right

[prisma stag]

Hello, this is currently what happens when you use the mouse left click. Just a series of branches that check certain things to determine what is happening and what to do about it.

Is there by any change an easy way to reorganize this? So if one of the main branches are true, it will just execute what is in that branch?

[odd ember]

yes if you're using #cpp. as far as I can see your branches all deal with different outcomes, so no, you can't really reorganize it without modifying logic

[prisma stag]

Gotcha okay. Thanks anyway.

[tranquil abyss]

Repost

[thick orchid]

I think I've melted my blueprint

No collision is working anymore.

fuck me

[icy dragon]

no u

[icy dragon]

What did you do prior to that happening?

[thick orchid]

Changed a few of the collision values.

I have two pre-set collision channels

And looks like it'

is not liking em

It's UE5, so it's to be expected.

[shell temple]

Ok probably a dumb question, but if I want to use a slider to change the view distance instead of buttons to do that how would i do that

[thick orchid]

As in, in your game?

[icy dragon]

Get the camera component and set the Field of View using a float variable that you set through the slider.

[shell temple]

Yea like i was watching a Matt Aspland video and he created an options menu and the view distance was like near, medium, far, etc. But i want to do it with a slider instead of a button like he was doing

[thick orchid]

Yeah, cool there's slider widget you can use.

Or you could create your own if you're feeling adventurous

You familiar with how the UI stuff works?

[shell temple]

I plan to in the near future set that up

[thick orchid]

Well that's how I'd approach it.

[shell temple]

But i just want to use the slider to change the view distance but I'm not sure how to use it in the blueprint to set new intervals by the step up

[thick orchid]

Generally menus are handled via a Controllers HUD.

HUD is where you handle stuff like option controls, such as your widget.

[shell temple]

See this is where I'm at, like i have the screen resolution thing set, and I'm trying to execute console commands to change the view distances. as you can see on the bottom

[thick orchid]

That's certainly a way to do it. Though I'd strongly recommend digging into how HUD widgets work, and how you can use them to alter things like view distance via a slider.

You can have buttons for toggling resolution etc.

[lofty ravine]

question how would i go by doing like a notes page, I have a huge journal that has editable text and I want it to save to HDD.

[thick orchid]

So you've created the journal already?

Or how would you go about the whole thing?

[lofty ravine]

I created the journal

I show you

[unborn compass]

Whats the correct way to have a child blueprint for an actor thats identical and inherits any new functions added to the parent class but also i can edit independently?

or is the best way to create the child blueprint and call all the parent functions?

by that i mean the child pawn will have all the functions prewritten and working when I make it but also i can add new ones that don't affect the parent and add things to the parent that then get added to the child

[foggy escarp]

A child actor can easily call functions of its parent, but I've never tried using a child actor that inherits from its parent. Sounds like something that would cause a loop.

[gritty trout]

I have a magazine component that contains an array of Bullets. The bullet object is of PrimaryDataAsset and currently only contains a Damage float variable.

I would like to, on the magazine, fill the PDA Bullet array with PDA objects on the Event Begin node.

I'm not sure how to create a new PDA object to add it to the array I have

I feel like I might be using PDAs wrong

[unborn compass]

i thought all children inherited from parents

[foggy escarp]

He was talking about creating a child class and adding functions to it.

If you create child classes by right clicking on the blueprint, you can call function of its parent.
This way any nrwllew function you add to the new child class can have slightly different uses.

[unborn compass]

yeah let me just specify my issue

[foggy escarp]

Oh that's you nvm

[unborn compass]

i have a class that has all the functions and stuff that i want all my units to have but I want to create a bunch of subclasses that function the same generally but also have their own special stuff

ie like "chess piece" and then program their movement and stuff for "knight" and "bishop"

thats a simplistic example

but i want all previous functions and stuff that were created in "chess piece" to also apply to "knight" and "bishop"

[foggy escarp]

.

You can access all parent functions of child classes.

[unborn compass]

but when i have a child class i have to manually call every parent function i want to be activated?

[high fractal]

For all intents and purposes the Child is just a copy that you can then extend functionality. If your Parent can do it, so too can the Child. If your Parent doesn't have logic programmed, the Child won't either.

[unborn compass]

okay. Basically i have a bunch of onclicked and stuff happening to the parent but when i created the child class it doesn't have that stuff built in

no problem i guess

[sharp rapids]

then something's wrong 😅

[high fractal]

But it does? You just don't see it in the Event Graph I take it.

[unborn compass]

nah the onclicked doesn't work

[high fractal]

Did you move the Child into your level or are you still using the Parent?

[unborn compass]

moved child into level

[high fractal]

It should behave, once created initially, exactly as the Parent until changed.

Did you change anything at all in the Child?

[unborn compass]

all i did was "create child blueprint" > move into level > click on him

[bleak swift]

Is it possible to change the direction of a Arrow Component? Or how any component like Pawn Sensing Spawns?

[high fractal]

Then in your Character Controller make sure you have the right logic

[unborn compass]

oh

[bleak swift]

See I have my AI Positioned how I need them to be though it's not the default rotation and so something like Pawn Sensing spawn's this way and I don't see a way to rotate it

[unborn compass]

well i have the linetrace set to make sure its of class "parent" with an == but is there a way to do that but check if its a child of that?

[high fractal]

Snake you can rotate the arrow in the actor's blueprint.

[bleak swift]

It doesn't select or show any details in the details panel

[sharp rapids]

There is a 'Class is child of' node

[unborn compass]

thank you

[high fractal]

Snakey it's in the viewport, select the arrow component on the left hand side.

[high fractal]

Can you move it out of your capsule component, rotate it, and then re-attach?

[bleak swift]

I didn't include the part that it is inherited

[sharp rapids]

You can rotate your mesh instead to match with the arrow

[bleak swift]

It doesn't fit my perspective though

[high fractal]

You should be able to move it like any other component but if not you can either move the mesh or set a rotation for arrow component on begin play. Though I don't like that.

[bleak swift]

I could transfer everything in it from a Character to a Pawn BP Class

[sharp rapids]

It's inherited from the Character base class. I don't think you can move them?

[bleak swift]

In the Pawn class it doesn't contain one.

[sharp rapids]

Then rotate your whole actor to fit the perspective

[bleak swift]

I have my own Movement System and everything so I'll just move it over to a pawn

[high fractal]

Should be able to make the arrow a child of the character instead.

[gritty trout]

Still confused about this

[high fractal]

Snakey are you making a sidescroller?

[bleak swift]

Though no Movement Component exists for a Pawn Class except for Floating

[high fractal]

You can runtime change the arrow direction on input.

Add it to your player controller directional inputs.

[blissful cloud]

Hi. I am trying to update a Niagra variable but it has no effect. Sorry, my experience atm is limited. This is in my blueprint

While this is in the Niagra-System

I am trying to update User.Color parameter

[sharp rapids]

Try only 'Color' instead of 'User.Color' ?

[blissful cloud]

Didn't work. It still has the same Color as the initial Color.

[sharp rapids]

What is the FX System Component? Shouldn't it be a Niagara component?
https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/4/0/440db36fae1b98e56a4ce64ec3c480f83740d484.png

[bleak swift]

Just switched all to pawn and everything is working if not better

Though now for my AI I'm still wondering on how to turn the direction of the sensing component

[blissful cloud]

I figured it out. Thanks for helping. Color Parameter was being used only in InitializeParticle and not on ParticleUpdate. Thus it was having no effect even though it was changed. Calling ReInitialize after setting the parameter solved the problem.

[wicked osprey]

Guys, I have such a question. Who made inventory with unique slots? For example, I have slots that will be sharpened only for weapons, and here's the question. Is it better for me to make a separate array for them in the inventory, or do I somehow fix the indexes only for them in the main array where all the items are stored?

[mild ibex]

pls, do me a favor, and get auto size comments, from the marketplace, pls i beg

its free

[trim matrix]

fuck you kid

[gentle urchin]

Was there a question to that screenshot, or just random share?

[fiery swallow]

he's just proud of his commenting

[gentle urchin]

Prime showcase material :p

Atleast an upgrade from my 0 comments policy

[fiery swallow]

you don't comment your work? spaghettis lines everywhere?

[gentle urchin]

Keeping it clean, and self explaining code dont need commenting 🤪

Or atleast very little

[fiery swallow]

I feel like you get to a point in blueprints where all code feels self explained

[gentle urchin]

Yeah visual languages tend to have less need for commenting compared to regular code

But it requires some good naming conventions

Imo anyways

Also wrapping every small piece of unctionality into its own function, and avoiding a function doing several functions in one big mess is a good start

[wicked osprey]

Guys, what is the size map for?

[gentle urchin]

Huh

Size map?

For bps?

[wicked osprey]

Yes

[gentle urchin]

The one with the different colored tiles?

[wicked osprey]

Size map for bluepribt, maps and other

[wicked osprey]

Yes

With memory and disk size

[gentle urchin]

Its to show you the asset size, and why its that size

So it'll tell you if a class that should be really small has gotten really big because of depenencies and hard references

[trim matrix]

Hi team, i need your help on something.. i'm trying to procedurally transform staticMesh to be scatter inside a sphere..
i started by adding actorOfClass to get all the object to scatter, but i'm sutck with the rest.. what would you suggest?

[sharp fox]

Hello, i have a question. Why my ai controller is first printing that max walk speed is normal 600 then its printing that is 0 pls help

[sharp fox]

my ai controller bp

[gentle urchin]

You've changed it?

It doesnt change by itself :p

[sharp fox]

ok nvm it was printing me an alpha from timeline, but it still doesn't move

the run function

[gentle urchin]

Not moveto

Setactorlocation

[sharp fox]

yea but i wan't it smooth

[gentle urchin]

If you're running with that setup

No it wont be

Now you're triggering ai moveto on tick

Which is not a good idea at all

[sharp fox]

but move to location is returning failed

[gentle urchin]

You cant/shouldnt call it on tick anyway

[sharp fox]

the whole thing is on begin play

[gentle urchin]

But timeline is tick driven

[sharp fox]

i know, i will change it soon, i just now need to know why my move to location is returning failed

dest is not 0

[gentle urchin]

Is thete a navmesh on this spline?

Is the location reachable?

I bet not

Using moveto like this is horrible

At best you can moveto each spline point, assuming they are all reachable

[sharp fox]

they are and i disabled pathfinding and it works but its not in loop

[gentle urchin]

Huh?

[sharp fox]

yea idk how it works, with path finding this was always failed but when i disabled it, its normal and its printing me that it reached the goal

[gentle urchin]

So there is no path to target

According to pathfinding

You should work more towards refining your interpolation i think.. or moving to each spline segment, and ditching the timeline

[sharp fox]

omg now it does work but it work only go to first spline point and not going to second

[gentle urchin]

Ofc

That logic you must make

OnPathPointReached -> remove current pathpoint and see if there are more left -> set next pathpoint as new location -> MoveTo location

[sharp fox]

bro, im watching youtube tutorials on how to make player move and you are telling me chineesee things

[gentle urchin]

Scattered?

[gentle urchin]

When you want to follow a path you usually store the path in some container (array, map)

Your logic must slowly move through this list of locations,

From start to end

[sharp fox]

ok nvm im so dumb and i have 0 iq, i didn't plug in "set duration"

[upbeat inlet]

Time stamp: https://youtu.be/pG7KFaCwvJw?t=1405

Hi, I'm fallowing Reid on his tarkov like inventory system. I got stuck on a create event that is different from what is shown on his video. this might be because I'm using 4.25.4 and he is using 4.25.2. Can I get any recommendation on how to get around this?

[maiden wadi]

Compile

[trim matrix]

yeah i need to procedurally moves positions of tiny bricks inside a sphere..
in houdini i would make the sphere a volume, and then use a pointFromVolume, and then packAndCopy bricks to the points..
Do you know how to do such a thing in unreal?

[sharp rapids]

Something like, Get Random Point In a Sphere, and set that as the position of a brick

[trim matrix]

yes!

[gentle urchin]

^ ding ding !

[sharp rapids]

Here's a way to get a random point in Sphere
https://forums.unrealengine.com/t/how-to-spawn-randomly-in-sphere/419047

[trim matrix]

awesome! thank you!

now what about spawn in a cube? would that me much more complex?

[sharp rapids]

You would need to define a centre position of the cube, Let's say 'c' and the size 's'
Then you can get a point simply using
(Random(c-s, c+s), Random(c-s, c+s), Random(c-s, c+s))
This is psuedo code that should work imo

If you need help translating into BPs you can ask

[trim matrix]

definitly need your help to translate that

shall i use expression or can i do that using nodes only?

also for the sphere one, i did like this

[sharp rapids]

Actually, Unreal already seems to have a handy node
https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Math/Random/RandomPointinBoundingBox/

[trim matrix]

oh wow!

so i just need to plug the cube in it and it will give me all i need

[sharp rapids]

That should work
Did you test it

[sharp rapids]

Wait

[trim matrix]

what i don't get is how should i connect the positions to all the actors i want to transform?

setActorLocation does not seems to work

[sharp rapids]

Instead of a For Loop, use a ForEach loop

It gives you the current array element to work with

[trim matrix]

like this then

(can't find forEachLoop, so used forEachLoopWithBreak)

[sharp rapids]

Try it

[trim matrix]

ok!

nah does not work

[sharp rapids]

What does it look like? Did anything move

[trim matrix]

nothing moves.. all the actors are at the origins

[sharp rapids]

Try adding a Print String in the loop

Does it print?

[trim matrix]

no

it prints before the lop

loop

but not right after

[gentle urchin]

So no actors were found

[trim matrix]

so i can i get this actor list then

[sharp rapids]

You mean the Cylinders?
Those are Static Mesh Components

[trim matrix]

ohhhhhh

damn

yeah

[sharp rapids]

You can just create an array in the BP and drag all the cylinders there

[trim matrix]

ok!

[sharp rapids]

Try the 'Make Array' node

[trim matrix]

i did but i can't plug it in the forLoop

*forEachLoop

ok created a new one and worked

but then i can't use a "setActorLocation"

i need to use another node isnt it?

[sharp rapids]

Try SetRelativeRotation SetRelativeLocation

Since the components are a child of the actor

[trim matrix]

hmmm can't plug anything in...

[sharp rapids]

My bad, I meant SetRelativeLocation

My brain is not working properly 😅

[trim matrix]

How can I generate a path(spline) based on Navmesh data, at runtime?

How can I generate a path(spline) from a point to b point, based on Navmesh data, at runtime?

[sturdy herald]

Hello. With widget i can control an actor on X,Y,Z. Is there any way to make a different coordinate system for moving with defining the center and 2 axises of the new coordinate system?

[wicked osprey]

Guys, how can I replace these pasta? I need to be able to install my own model for some classes, and some took a model from the data table. And I also want to set the weapon value for the item type only for PickUpWeapon, and for others, respectively, so that the item type is Item by default

[foggy escarp]

I would need to see more of your code....
Here's a free plug in that makes graphs easier to read with screenshot.

https://www.unrealengine.com/marketplace/en-US/product/graph-printer

[unique falcon]

hello, i have a problem when i add a widget to the viewport players can see each other's widgets

for example the crosshair gets added twice

i tried isLocallyControlled but it doesn't work

[foggy escarp]

So when it's added to viewport. It adds to all clients and server?

[unique falcon]

yes

[foggy escarp]

Can I see your bp for adding to viewport?

[maiden wadi]

Above is a classic case of why HUD should manage all UI and not networkable classes.

[fair magnet]

I've noticed a weird behavior :o
I'm not sure wether it's my fault, UE5's fault or neither ones fault.
So...
I made a system that loads and saves savegames.
I tested it and everything is working fine.
Then I proceeded with creating Volume Options and started with the Master-Volume. Created it made it load up on start and all that works good
Then continued with music and... It didn't pop up... The Array were only 1 entry long.
So I tried changing things and it seems that Unreal saves an array per array and not per index :o (which is fine)
This leads to me having to delete the savegame everytime I wanna add a slider else it won't find it.
Can I "fix" that somehow?

[unique falcon]

that's on beginPlay

i should mention that's a parent class

[foggy escarp]

What is this BP and what is running it?

[unique falcon]

it has child BP's and the children BP's are which players control

TankBase>Tank1,Tank2 etc...

[foggy escarp]

Sounds like there might be a server rpc calling functions of clients or something...
@maiden wadi is right things like this should controlled by a hud....
But you could also just make sure to be using the correct controller or even use a even for client only.

[unique falcon]

hmm do you think it's this

its like an ovveride for the default spawn in the game mode

i get all player controllers in the game mode BP and spawn the actor then posses the spawned actor

[maiden wadi]

This is a UI issue. This issue has nothing to go with gameplay code. Gameplay code should be able to drop you into 500,000 tanks within two seconds and your UI code should still only display one crosshair. You have to separate your user interface design from your gameplay.

When the local player enters a new pawn for controlling it, HUD should be notified by an event. That event can check if the crosshair should be shown from that HUD's PlayerController's ControlledPawn's type. If you move into a new pawn and crosshair is already there, ignore it, no need to remove or add it again. If it's not on screen, add it. If there is no current pawn, remove the crosshair.

Realistically this would be better as a delegate from C++ in client's SetPawn, that the crosshair widget could bind to and do it's own thing with, but babysteps.

[slow pewter]

I have an 3D widget, if im Scroll it its Gosting af, is there any FIX for it?, and i have Motion blur disabled

[unique falcon]

ok i got it thanks ill try that i think i know what to do but i have another issue with the PC

This is the logic where i spawn the players, how i can override the PC to a custom class that i made?

i have TankController BP i want to use that instead of the default PC

NVM thanks for your help i think i found the solution

[hybrid hare]

Hi, i am still struggling with my cupboard BP but with your help it's getting better. I can now open my drawer then open the cupborad doors and close them, then close the drawer and open it again. But once I ve done this, I cannot open the doors anymore. Any idea why ?

Also, I'd like to be able to open either the doors or the cupboard independently (not in sequence, that's why I pu a flipflop instead of a sequence), both being controlled by different trigger boxes (one for the drawer, the other for the doors)

[hybrid hare]

ok, now I have both working. I can open the drawer, close it , open the doors, close them but it feels like I cannot really control them separately and my trigger boxes seems to be be considered as one ???

If I use a sequence instead of a flipflop after my event pickup, both opens at the same time obviously

[wicked osprey]

Guys, how can I optimize this code? This code is written in construction script. I want data to be taken from the data table in some classes, and in some I would like to choose static mesh myself

[earnest tangle]

Why are you looking to optimize it? Does it perform poorly?

[wicked osprey]

It's just that this is not yet the final list of items that I will need, and when I add it, I will have to constantly supplement this code. And I would like to set it up so that when you add a new item, you don't have to suffer

[earnest tangle]

Something where you can add things "after the fact" is often achieved via polymorphism, so perhaps making use of that here would be helpful as well

[wicked osprey]

And even more so, in some classes I need to make it so that I can choose my static mesh, icon, etc. in them.

[earnest tangle]

Eg. you have a base class used for all your items, and some function on the item will be able to return the values used here, so you can simply call that function directly instead of having to use a manual mapping

[gritty trout]

Using Blueprint, I would like to take my weapon magazine and define data (damage, type enum) for each bullet that is loaded into it. How would I create such a data structure in Blueprint?

[hybrid hare]

Is there a control like flipflop or sequence but with a or as a condition ? Like use A OR B

[earnest tangle]

You could use a struct for this and then the magazine's contents is defined as an array of these structs

@hybrid hare use a Branch node and an Or node in its condition

[hybrid hare]

@earnest tangle like this ?

[earnest tangle]

Yeah

[hybrid hare]

then I use it before my flipflop ? or instead ?

[earnest tangle]

Well it depends on how you want it to work

the branch will go into the True output if the condition is true, otherwise it will go into False

[hybrid hare]

I want to be able to open the drawer and the doors independently

they use different triggger boxes

either open A or Either open B whatever the state of A or B

then be able to close them the same way

[earnest tangle]

So if the player interacts with the trigger for the door it would open the door and so on?

[hybrid hare]

exactly. So far i can only either open both at the same time or get lost in a loop and open close / to open close the next item

[earnest tangle]

Right - so you could use a branch have the condition for it set up to compare whether trigger box that was used equals the drawers trigger box

Then if it's true, you open/close drawers, and if false, doors

[hybrid hare]

ok, so I have to put my triggers somewhere else ?

I'm getting lost. I have a really pretty basic beginner knowledge of BP

[earnest tangle]

Without knowing exactly how everything is set up it's a bit hard to say, but you could for example store the trigger which is being used into a variable, and then use that in your Branch

[slow pewter]

If i get a Ref of an Array lets say Index 3, and can i get this Struct Ref, to " Set members ", and is it working? , looks like its not Settin the Var in my Array with this Method

[earnest tangle]

If you make sure all your variables are refs it should work, but it can get a bit fiddly.. one of the reasons why I moved my complicated struct handling to C++ where the distinction with refs and values is easier to work with

[sharp rapids]

I am convinced You cannot set a value in an array inside a struct (in BP)
I have to set the entire array everytime I want to do this

[hybrid hare]

@earnest tangle, ok thanks, I'll try to understand and do what you wrote

[earnest tangle]

@sharp rapids if you use Get (a ref) instead of Get, and then modify the value say using Set Struct Members, it should update in the array

But depending on where the array came from, the array itself might be a copy of your original array

[sharp rapids]

I'll try that 👍

[slow pewter]

Mhh im using the Original One, from the Savegame, and looked 10x times its all get a Ref not a Copy

[hybrid hare]

@earnest tangle sorry for being dumb, but how do I store the trigger into a variable ?

[slow pewter]

No Set members, should work with an Ref, but looks like its not working atm on Preview 1

[earnest tangle]

@hybrid hare if you have a begin overlap or such on the triggers, you can have a variable like "WasDrawersTrigger" with type boolean, and you just set it to true in the drawers overlap, and set it to false in the doors overlap, or something along those lines

[slow pewter]

double checked, but not working, i try an workaround

[earnest tangle]

Yeah it was kind of a pain to ensure nothing was getting copied at any point with arrays and structs

It's so easy to accidentally do it, eg. if you just set the array as parameter into some function and didn't set up the function to have a reference for the parameter

[slow pewter]

I directly Work with the Savegame Array, so No Copy, thats the strange thing, and 100% all get a ref not a Copy

[queen sapphire]

Hey guys, I'm trying to write a BP that can take mic input, use Google STT, GPT3 and Replica to respond to said mic input. The video I'm watching seems to be a version or two behind, and I'm having trouble with getting the player speech and getting a response. Here's the full code from the video: https://blueprintue.com/blueprint/qr8pj06x/

How would I write that player speech code in 4.27? I see the AudioCapture variable and I'm confused as to how to get it without ArthursAudioBPs.

[sharp rapids]

Are you trying to do something like,
The Player looks at the drawer and presses a button to open the drawer, then presses it again to close it.
Like that?

[hybrid hare]

@earnest tangle ok thankx

[slow pewter]

Ok @earnest tangle With SET Array Elem works flawlessy, i avoid now this get a ref and try to set members

[earnest tangle]

Yeah set array elem would probably help if the refs get messed up :)

[slow pewter]

Just hard to find out whats my Mistake, and whats bugged/ Mistake by Engine

[hybrid hare]

@sharp rapids yes exactly

same for doors in the same blueprint

[earnest tangle]

@slow pewter Yeah this is why it's a lot easier in C++ because you can see it very clearly what's a ref and what isn't :D

[slow pewter]

you see it on the Nodes too on the Output, also u can literally see whats copy and a ref, but looks its bugged anyway

[sharp rapids]

A raycast would have been a better option imo
Triggers are fine too, but they're not as accurate

[hybrid hare]

I would be easier and already done with 2 BP but I want to have it working in one

[sharp rapids]

The drawer and the door are two different actors right?

[hybrid hare]

this is my setup

[sharp rapids]

As Zomg said, you can have booleans indicating whether the player is in the drawer trigger or door trigger

Booleans 'IsDoor' and 'IsDrawer'

[sharp rapids]

Then here, just after the Begin Overlap on the Door trigger, Set the 'IsDoor' to True
And on End Overlap, Set it to false
Do the same for the Drawer

[safe iron]

Hey there, I have a small blueprints issue
I was working with maps to make a weapon inventory and for pickups I went to use the add node to overwrite the value of a slot, in order to give it the child actor of the picked up weapon
The fact is that it does not work, the actor is added to the map but for some reason when I get the parent component to set the visibility and attach it, it says "access none trying to read property" and it does nothing, here are some screenshots from First Person Character and the pickup

[sharp rapids]

After Event Pickup, If 'IsDrawer' is true, go to the drawer section
If 'IsDoor' is true, go to the door section

[safe iron]

I remember having a similar issue a while ago (probably different though) and having solved it but I can't figure this out, probably I am rusty on Blueprints, haven't touched them in weeks cause I've been focusing on writing

I could simply change the value of the "can be equipped" boolean but then the player would be stuck with the same set of weapons, which I can't afford since the game is gonna be set in different eras so it requires different weapons set, also, it would kill moddability

[hybrid hare]

@sharp rapids ok thanks, I'm trying to digest all of this, my poor head's already aching !

[vital aspen]

for add to stack. I just out of ideas why this doesn't seem to work as it should. the BP and pins are passing the right info. I made some changes. That still doesn't seem to work. It seems to be stuck on a max stack size of 2. It the max stack size for Logs is 5. Doesn't matter. Still uses 2.

and the numbers are still screwed up and I can't figure out what's doing it.

[high frost]

how can I find where exactly this error occurs? I have quite many blueprints but this error message doesn't really help

[safe iron]

you must specify the class of the widget

[vital aspen]

where you have the CreateWidget is calling a null class

[safe iron]

Click that thingy under the purple pin and select your widget

[high frost]

I know why it happens I just cant find the blueprint with this error. I deleted some unused stuff in the project and now this appears

[safe iron]

A

probably you deleted some used stuff then

[high frost]

I know x) how do I find the blueprint?

[safe iron]

Have you saved? if you didn't I would suggest you to close the engine without saving and opening it back

It's a panic move but it works

[high frost]

I dont want to recover deleted stuff although I still can. I just need to find this BP. Is there any way?

[safe iron]

Probably if you double click but I don't think it will work

[high frost]

of course I double clicked it, it doesn't work

[safe iron]

It usually should give you a reference

[safe iron]

As I suspected

Then you must check your blueprints by yourself sadly, you can't get back to the blueprint if it doesn't specify which blueprint

First place I would look is obviously the HUD

[high frost]

eh. okay

[safe iron]

Anyway, can someone help me with the issue I had before? Can't seem to solve it :/

[gentle urchin]

Well it doesnt find it in the map

The bool is there for a reason :p

So adding either doesnt happen, or its overwriting some singular slot

You got some index coversion going on

Id verify that

[safe iron]

oh ok, thanks

Should I use some other node then? Or fall back to modifying the boolean value?

[gentle urchin]

Id use the bool to react in case what we searched for was not found ,

About your index i got no clue what you're doing in the collapsed node

[safe iron]

I am simply getting the value of a integer

The integer specifies which key the gun should go in, the slot of the weapon

And it specifies it to the add node

[maiden wadi]

This sounds like call from C++. I'm not sure you can even reach where this is called from the blueprint CreateWidget.

Oh, discord forgot to scroll again. 😦

But yeah. Not sure if you solved that already, but Blueprint CreateWidget immediately returns if there's no class selected. So I'm semi sure that this is something you've passed to C++ and ran a CreateWidget<>() from there without checking the class.

[high frost]

i solved it already. it indeed was in c++

[trim matrix]

i did but i can't connect the array element in the target :§

@sharp rapids oh sorry you said "SetRelativeLocation"

but then what do i do?

[trim matrix]

ok nevermind got it working!

[gentle urchin]

How did yesterdays lesson go? 😄

[trim matrix]

hi @gentle urchin ! pretty well thank you

even tho i'm not done yet

which timezone are you on?

[hybrid hare]

what should I use between the event pickup and the branches to play event pickup when overlapping drawer OR when overlapping trigger_door so only the overlapped trigger plays ?

[wicked osprey]

Guys, how can I make it so that only the desired row can be selected in the Data Table Row variable? (in the PickUpKey class, for example, I can't select data with rifle weapon values, I only need the key string) I have an idea just to create a variable and compare it with Row Name. But in my opinion, this is a bit of a crutch code.

[gentle urchin]

Cet :)

[maiden wadi]

Not sure you can do that with FNames. I know GameplayTags support this.

If it's that concerning, you could just make separate Datatables. If you need to use all of the rows in one place, make a composite table out of them all.

[wicked osprey]

Thank you)

[dawn gazelle]

A sequence node?

[hybrid hare]

sequence execute both of them. i tried

I want to execute each independently

[dawn gazelle]

Decide which one has priority. Whichever you choose, connect its false to the input of the other.

[hybrid hare]

I also tried that and ended with only one r working

[dawn gazelle]

I'm not sure what you're expecting then. If you don't want both to fire, then that means one has to have priority over the other and if one is true, the other will not fire.

[fiery swallow]

Anyone know if there's a way to make it so static meshes stay visible even when you are inside of them?

for some reason they disappear once the camera goes inside of it right

like they stop being rendered

[echo salmon]

My question its a bitty silly but am a bit confused . If i want to access another BP which is parent is just an Actor , i can access it if i use get actor of class ? And by reference ?

[hybrid hare]

Well, to make an analogy to real life, i want to be be able to open my drawer, open my doors, keep them both opened, close one or another

Maybe I should go for a BP only for my doors then ?

[fiery swallow]

get actor of class get's the first actor of that class in the world, and it returns it's reference. So I don't think that's what you're after

[echo salmon]

ItsMoxie how i can access it then , if i dont have any reference via overlap etc?

[dawn gazelle]

Then you may want to move the logic for opening them into the objects themselves. Your input event should trigger the interface on the object you're wanting to interact with.

[fiery swallow]

when you overlap something it gives you a reference to the actor that was overlapped. Other Actor is the actor you overlapped

https://gyazo.com/f9718aeebd3bbd092e9c842ffa08837d

[dawn gazelle]

An analogy in real life would be, you don't check if you can open the drawer when you're trying to open a door.

[echo salmon]

@fiery swallow yes i know, but lets say i want to access a BP from a widget lets say . How i can access a BP ?

[dawn gazelle]

Pass reference to your widgets when creating them, or, set variables on the player controller or character that your widgets can read.

Your widgets can then use GetOwningPlayer or GetOwningPlayerPawn, cast to your appropriate type and get the variables.

[echo salmon]

@dawn gazelle ty buddy !

[hybrid hare]

ok, thanx. I finally made one blueprint for the drawer and one blueprint for the doors. Far less complicated for my poor noob brain cells

only thing to deal wth is now the speed at which the drawer opens

[sacred comet]

Hi I was wondering if anyone could help me, i'm trying to use the SetRenderCustomDepth on a HISM component but only want it on one instance is it possible to do that?

[gentle urchin]

Possibly by using custom primitive data?

More #graphics tho

[strange urchin]

how can i get the input key name

i mean

when u look at item

i wanna text in widget

press E to intract

how i get the E from input

[gentle urchin]

Worst case just use two hisms and swap between them 😄

[vital aspen]

what would cause a limit of only 2 items to 1 inventory slot

and I see 20 slots. It only see's the 1st slot. doesn't see any other slots. ???

[gentle urchin]

Faulty code

[vital aspen]

in what way, to give me an idea one what to look for

[gentle urchin]

Well however you add to the inventory

Thats thr part failing

[vital aspen]

ok, I'll have to start from scratch. Thanks

[vital aspen]

I removed the 1 issue I was having with the number of items in each slot. How ever it seems like the issue is still there. it seems to mess the number up after item 4

anyone have an idea where to look

and can't figure out why I can't get the icon to show. Here's the binding for it

[echo salmon]

It is possible on User Widget to add static mesh ( to show the static mesh as an image? )

[strange urchin]

thanks

[trim matrix]

France 🇫🇷 ?

[gentle urchin]

🇳🇴

[trim matrix]

quick question, i did create a new project, and once i hit "play" in the default Level, still got this BP compilation error... any ideas?

[odd ember]

random tagging

you got compilation errors in all of those BPs

[trim matrix]

yeah when i open one of them i got this.. but never ever edited thoses BP..

odd

[odd ember]

well if you've removed something that used to be there

that will reflect too

[gentle urchin]

This doesnt look like a new default ue4 project

[trim matrix]

very odd then...

[odd ember]

https://tenor.com/view/marvel-is-it-though-thor-bruce-banner-gif-14242312

[trim matrix]

i just created a new one...

[trim matrix]

unistalling and re-installing ahah

[gentle urchin]

Which template did you use then ?

[trim matrix]

film template

[odd ember]

never heard of that

is it official?

[autumn surge]

Hey, how do I get this variable type?

[trim matrix]

yeah

[odd ember]

make your own if it's available?

doubt it is though

[autumn surge]

its promote to varable from a open level by reference node.

[odd ember]

yeah sounds sketch

[autumn surge]

open level by name does not work on after loading my save file.

[trim matrix]

i'm sure you already saw it tho

[autumn surge]

so I need this type in my savefile container but I cant find it.

[odd ember]

it's not exposed to BP

[odd ember]

ah it's UE5. I expect everything there to be broken. try the UE5 section

[trim matrix]

well yeah, because i'm re-installing ue4.. but i get the error with ue4..

but do you think installing both version could cause trouble in one or the other?

[gentle urchin]

No, i run several versions and have never had any problem about it whatsoever 😄

[odd ember]

never seen that interface with 4

[autumn surge]

my issue is its not opening the map after loading my save file even in a cooked build, what do I need to do?

google search suggests to have all maps in the root folder, is it that?

[odd ember]

I don't know what you're trying to do but UWorld isn't exposed to BP for a reason

if you have a path for the level you can try that if you're trying to load it in

I think the fact that you can "promote it to a variable" is just a hack, which is why it doesn't work either

[maiden wadi]

Google also suggests that you interface every function in your game and store savegame data in GameInstance. 🤷‍♂️

[hybrid hare]

Is there a way to slow don the drawer opening using this ? Action on curve is useless.... and the drawer keeps spurting out of the cupboard to it's Y vector location

[gentle urchin]

ugh, I hate it when traces dont hit, despite obviously hitting

[desert owl]

So I've run into another issue I cant solve. The code only works if the root of the mesh is on screen, instead of any part of the mesh. I'm trying to make a vision based interaction system.

[gentle urchin]

If you want any edges to count aswell,

you can simply add a value to the meshes

an "offset"

wouldnt be dead on accurate, but thats pretty hard to do in general

Not entirely sure why you need it so accurate tho

like.. im reading "vision based interaction"

but are you covering an edge case just for the sake of covering an edge case ?

[desert owl]

Well i tried this for my doors and they only work if i'm looking at the root of the mesh. so i have to walk up, look at the bottom corner, then press E

[gentle urchin]

Add a new root to the mesh, so it's centered ?

a scene transform

[desert owl]

I was hoping to avoid that cause depending how close the player is they still might not be looking at it. guess i'll just put it on the handle and say fuck em if they cant figure that out. thanks for the advice.

[gentle urchin]

Handle makes a lot of sense

you can definetly add some more to it, but it easily gets very heavy for little reason

a collision volume in front of the mesh plus a dot check for general direction could probably result in much of the same

[trim matrix]

just re-installed ue4 and fixed the BP compiling issue

[gentle urchin]

Sweet

my collision issue still escapes me.. got the same setup in a different bp, and it works just fine..

got both simple and complex collision on the mesh

[gentle urchin]

Figured it out.. disabled collision in an inappropriate place

[dawn gazelle]

Naughty.

[gentle urchin]

Indeed it was 😛

[hybrid hare]

Is there a way to slow down the drawer opening using this ? Action on curve is useless.... and the drawer keeps spurting out of the cupboard to it's Y vector location. I tried set rate with no luck as well.

[gentle urchin]

erh

Output from the Timeline is your Alpha value normally

Not a float converted to a vector

So there's an "open" position (vector), and a closed one

Or closed + Open offset, however you wanna name it

[barren relic]

currently trying to make a weapon in my game work like the spread gun in contra. Having trouble getting the projectiles to spawn in the cone like it would as pictured

im making a sidescroller but in 3d, as in models, etc.

[trim matrix]

guys, i'm trying to reproduce the wedge PBR feature of Houdini.. do you know if such a BP already exists in unreal?

[hybrid hare]

ok, I see. i have to redo this part to find another way to get the positions then.

[gentle urchin]

GetForwardVector - SprayWidth/2 + BulletID*SprayWidth/Bullets @barren relic

[dawn gazelle]

In terms of slowing down a timeline you can by using that Set Play Rate before calling the play.
Play rate of 1 means it'll play back 1:1. So if you have a 1 second timeline, it'll play back in 1 second.
If you have a play rate of 0.5, then it would play back in 2 seconds.
If you have a play rate of 2, then it would play back in 0.5 seconds.

[barren relic]

spray width is the variable in this?

[gentle urchin]

yeah

could be angles instead i suppose

2 sec, setting up a test

[barren relic]

yes im trying to make that

ok I appreciate

[gentle urchin]

I missed a step, I'm sure of it

[hybrid hare]

Thanks Datura for those explanations

[vale pine]

Is it possible to have "Add call to parent function" with Input events?

[barren relic]

thank you I will try that now

[gentle urchin]

This is purely from the "forward",

you'd want to use the guns Aim direction as the origin location

[barren relic]

ive been using random cone lol

[bright harbor]

is there a way to get the location of points along a cable? i just want to move an actor along a cable, as you would on a spline

[gentle urchin]

There must exist something for it

[dawn gazelle]

Not like you can with other events. You can override the parent's binding.

A different way would be to have the earliest parent call an event when that input is triggered/released that you can then override and make parent calls in any children.

[gentle urchin]

https://docs.unrealengine.com/4.27/en-US/Basics/Components/CableComponent/

Not your everyday bread. Requires c++

You can get length and segments from it but the rest is not avaliable

[gentle urchin]

Also, id suggest using a spline instead

[trim matrix]

guys, how do you create an output node of a function?

the input comes by default

[barren relic]

it works @gentle urchin, Thank you I appreciate it a lot

[vale pine]

Ah thanks, that clears things up 🙂

[bright harbor]

i would use a spline, but i want to be able to get it to look like a physics cable, and be able to put the end, width, length, etc. in on construct

[maiden wadi]

Cables should mostly be for looks. Like Particle Systems and such. Recommend avoiding them for literal gameplay code.

[dawn gazelle]

It's usually on the right hand side when you have the function selected.

[trim matrix]

oh! got it! thank you!

[maiden wadi]

Also you can drag and drop connections on both the function start and ReturnNode to add inputs and outputs.

Semi useful. Annoying to have to rename them ReturnValue for the first one every single function, but can be quicker than looking up classes or types in the selection list.

[trim matrix]

do you know how to get Exec and Wildcard ?

i can't get them in my function input/output

[maiden wadi]

Those are only for macros.

[trim matrix]

oh

go it

thank you

[austere fiber]

I followed a tutorial of sorts to calculate speed variations based on slope angle. But the tutorial didn't show me how I'd tie the values into the movement variables. Can anyone tell me how I'd incorporate these values into movement?

[hybrid hare]

finally changed my drawer BP to get the drawer location and now it works just fine. Thanks again

[random plaza]

How do you change variables in a child actor component?

[barren relic]

what do you mean

[random plaza]

like, if i have a door object parented to a bigger blueprint and i want to change the variables on it

it's a child actor component class

[dawn gazelle]

From the cast you can then access the variables of the child actor.

[random plaza]

thank you

[burnt berry]

Hello, is it possible to have delegates with payloads from blueprint? I know Dynamic delegates can't accept payloads, but maybe there is a workaround.

[dawn gazelle]

Do you mean like having an event dispatcher that passes along an object?

[autumn surge]

so fixed it, it was a engine bug that took 3 hours to figure out, it just refused to save that name variable, so I made a new one in the savegame container saved it to that and it fing worked.

[burnt berry]

Not exactly. In this setup, the Delegate is declared with one parameter. In my case, the delegate can be declared with one parameter, but the function the delegate calls can have X number of parameters. The X - 1 parameters are then passed along as payload data.

DECLARE_DELEGATE(FDelegate)
FDelegate Deleg;
void FuncWithParams(float A, float B);
Deleg.BindUFunction(this, "FuncWithParams", 0.5, 2.8);

This is valid C++ code, for instance. Even though FuncWithParams has 2 parameters, and the delegate is not declared with any parameters, we can still bind the two because I passed along 0.5 and 2.8 as payload data.

The equivalent in BP would be if your event accepted no parameters, but I could pass along the Payload object anyways and it would always be equal to whatever value I set it to when I created the delegate.

[earnest tangle]

I don't think so on payloads

This is one of the reasons why I tend to always include more stuff in my delegates than is strictly necessary because it just makes dealing with it in BP's much easier :P

one workaround of sorts is to just wrap it in a BP uobject which has no other purpose besides handling the event... then you can stick your payload data into variables in that uobject

but it's not really great imo, but maybe for some usecases it might not be too bad

[tropic pecan]

Hey there, I'm uncertain if this is a complicated question or not as well as I'm not sure if this should be asked in either graphics, animation or audio but I'll attempt to ask. I'm attempting to make a camera move along with the spline and then move to the next blueprints after completing it's spline end just like an animation. There's not many tutorials for this and I'm uncertain of how to make a camera move along with a spine will a trigger ending so does anybody know a way for this?

[fathom cobalt]

is there an alternative to this node for Actors?

[trim matrix]

You can SetActorLocation yourself

[fathom cobalt]

it's supposed to be a vehicle

but I had problems with it when it was a pawn

[plain jay]

anyone know how to calculate a positive and negative value 0-180 via dot product? I can only get positive values

[errant snow]

You can't. At least not with a single dot-product. It can only tell you forward/backwards.
You need to either do a second dot-product with a vector to the left or right of your forward vector (if one is readily available).
Or you need to use a cross product to determine the left/right-ness.

[plain jay]

would you happen to have an example? im having a hard time wrapping my head around this lol

[errant snow]

Not really, sorry. I can't really explain it well in this format. A google search for "360 angle between two vectors" comes up with tons of results.

[gritty trout]

I'm making a firearm and I'm currently looking at making the logic for a fire rate cooldown.

I can accomplish this with the tried and true DateTime variable but I'm asking if there are any Unreal Engine quirks that accomplish this in a cleaner, more efficient manner

Sorry, the functionality being that when the function is called it fires off and then goes in a cooldown where it can't be fire again until the timer has expired

[tawdry surge]

Timer, timeline, delay
Take your pick

[runic parrot]

Hi! does anyone know if there's a way to know if one collision box ALL overlapping with another collision box?
Meaning, Object A is ALL within Object B

[rough cedar]

I'm trying to figure out how to have the camera boom always point in the forward direction of the character without having to disable. " Use Pawn Control Rotation". Anyone have an idea how to do that?

[austere fiber]

I guess no one present knows

[midnight otter]

For some reason my AI suddenly stopped working

I was working on something completely different that should have zero impact on AI, yet when I press play, the AI won't follow the player anymore

[tawdry surge]

@runic parrot You could use the bounds of the two collisions to determine if one has enveloped the other

[midnight otter]

Thanks to @onyx dock for helping me out

[onyx dock]

https://tenor.com/view/dancing-boy-cowboy-gif-12550037

[rough cedar]

Does anyone know what kinda math "Use Pawn Control Rotation" is doing for the camera boom component on a character to adjust itself to the correct orientation. And is there a way to do some math to compensate for that and force it in another rotation?

[chilly fulcrum]

How am I able to add to relative rotation to my camera when use pawn control rotation is enabled? It seems to override all changes to rotation

[rough cedar]

@chilly fulcrum lol im here for the same reason

[chilly fulcrum]

lol yep just saw that

im going to search the channel to see if theres previous responses

[rough cedar]

Everything I try to force rotation either makes it go crazy or doesnt do anything

[chilly fulcrum]

I cant find anything that does anything at all

[dawn gazelle]

This is in CameraComponent.cpp

    if (bUsePawnControlRotation)
    {
        const APawn* OwningPawn = Cast<APawn>(GetOwner());
        const AController* OwningController = OwningPawn ? OwningPawn->GetController() : nullptr;
        if (OwningController && OwningController->IsLocalPlayerController())
        {
            const FRotator PawnViewRotation = OwningPawn->GetViewRotation();
            if (!PawnViewRotation.Equals(GetComponentRotation()))
            {
                SetWorldRotation(PawnViewRotation);
            }
        }
    }

[rough cedar]

@dawn gazelle this looks great, but is there anyway to do it in bp?

also thank you!

[dawn gazelle]

This one is in SpringArmComponent.cpp

    if (bUsePawnControlRotation)
    {
        if (APawn* OwningPawn = Cast<APawn>(GetOwner()))
        {
            const FRotator PawnViewRotation = OwningPawn->GetViewRotation();
            if (DesiredRot != PawnViewRotation)
            {
                DesiredRot = PawnViewRotation;
            }
        }
    }

[chilly fulcrum]

seems like it, I've seen all that as nodes in BPs before

you just have to interpret it correctly

[dawn gazelle]

Would there be a particular reason why you would want to do something in BP that is already able to be done without it?

[rough cedar]

I just dont have experience with cpp. So idk how to implement this

oh im sorry you are just providing the code

of what its already doing

right?

[dawn gazelle]

Yes

[rough cedar]

haha ok sorry

[whole mulch]

Hello all quick question, I am trying to figure this out but what is the different between Editor utility blueprint and Editor utility widget?

[vale pine]

I have and idea but it is deeply theoretical and it might be overkill if you're only looking to do Boxes....

So when you have a static mesh, and you use complex collision, you can set the collision to Double-Sided Geometry, which is like giving it a shell, making it hollow.

Now imagine you have 2 Overlap cubes of the same size. CubeA is "filled" like default overlap. CubeB is the shell.

If BOTH overlaps begin, but NONE end, that means you are only partially intersecting the cube.
If the overlap for CubeB ends, but the overlap for CubeA has NOT ended, that means you are fully enclosed.

To be clear, you would need 2 different Overlap cubes (one of which is really a static mesh), PLUS your actual Collision Object.

That's the theory anyway. I've just tested to make sure that Double-Sided static mesh can use overlap and it can.

[unborn compass]

Hi everyone, hopefully a quick question. Say that i would like MOBA style spell casting, is it necessary at all to axis map QWER or could i just use input events in the player controller?

[desert juniper]

it's best practice to action map it

[unborn compass]

would I make a new axis mapping for each key?

[desert juniper]

yes

[unborn compass]

thank you

[desert juniper]

would help if uses want to change their keybindings

[unborn compass]

right right

[desert juniper]

along with support for controllers, etc

[vale pine]

Here's a visual that hopefully makes more sense

[trim matrix]

hello guys

how can i call an actor to another actor without using cast

just like how we call player by getting "Getplayerchatacter" node

is there any way to call actor

[rough cedar]

@chilly fulcrum GetTargetRotation in the CameraBoom holds all of its inherited rotation values. Just now figured this out. Hope it helps.

[chilly fulcrum]

I dont have a boom for the cam though

[rough cedar]

Springarm?

[chilly fulcrum]

nope

[rough cedar]

oh

[chilly fulcrum]

I mean I can add one if that fixes it I guess

[rough cedar]

Is it for a character in a third person project?

[chilly fulcrum]

first person

[rough cedar]

oh yeah that wont help you

[stone aurora]

I barely know how to follow a tutorial so this may not be useful. But does it have to be one specific collision box? Maybe have it where 2 collision boxes (one on each side) or maybe 3 if you need a middle attachment. Then have both/all three require verification that they are all in contact with the same "overlapped" collision?

[odd veldt]

Just to be sure, is it the best way to use a 2D Render Target to switch ingame to a 3D map like in the new Doom games?

[unborn compass]

anyone got a simple fix for a binded variable that is supposed to be draining a progress bar but only jumps from filled to unfilled?

in widgets

[odd veldt]

The bars go from 0-1 ... so 0,5 is half

[icy dragon]

You could spawn a black box with 3d map elements in it, to save on performance.

Canvas Render Target is hogging on performance, it can cost you a lot of frame time for even simple elements / scene capture 2D

[austere fiber]

Oh boy. Okay. I'm trying to make a check for slope angle, and whether the direction the player is going, is going up hill or down hill. The current way I'm setting it up is going to spiral out of control, so I'm going to ask if there's a better way to do this.

slope pending is the current location hit of the location the player is standing. slope last, is the previous frame. Since the player doesn't move on the Y axis. it's irrelevant.

this for example gives the same result but using sonic style movement. if you're on the ground you're holding left, and if you're on the ceiling, you're holding right

[bleak swift]

So I've setup a Level Camera to create a little transition using Set View Target With Blend. It should simply just move between the two but instead it sorta rotates and is really buggy

[sharp rapids]

I don't exactly understand what you're trying to do
But If you want to compare two vector positions, you can do it in a 'compact' way by subtracting the 'Last' position from the 'Pending' position. And from the resulting vector, If X is negative, then you're moving left and vice versa. If Z is positive, you're moving up.
Can you elaborate what are you trying to do? Relative to what, do you want to calculate the slope?

[austere fiber]

I've thought about it a little more. I realized X is worthless. I'm trying to find if player is going up or down. so only Z is needed. so I can get rid of the X stuff altogether

basically. I'm trying to add speed to player if they're going downhill. or slowing them down if going up. Needed a downhill check before I could do that part

I over thought it

https://tenor.com/view/ame-amelia-amelia-watson-finger-gun-wink-gif-23544708

[sharp rapids]

Wouldn't physics do that automatically for you?

that is if, you have physics applied on your character

[austere fiber]

that only works if you're under max speed and getting up to reach max speed. If you're already going max speed, and you want to add more. got to increase max speed. so it has to change dynamically depending on terrain

[bleak swift]

I pretty much want a effect of on BeginPlay the camera will transition from a random place (will add later) to your character

[tender anvil]

What's like the best way to implement headbobbing/camera shake to an FPS camera?

one that would give me a really smooth result

[bleak swift]

Anyway know why it is trying to rotate?

[austere fiber]

@sharp rapidsI do believe this is the most simple version of what i was originally trying to do

[barren relic]

Toggle visibilty not working on a timer for me

the code is running, it's just not becoming invisible

[tame pecan]

Because you toggle two times on the same frame

and it becomes visible again

[austere fiber]

yeah sequence is same frame

[barren relic]

oh

fixed with flip flop

idk how

[tame pecan]

or just a not boolean

to be even more clean

[barren relic]

Don't think I get it but it works so imma head to bed

[odd veldt]

You mean a pawn with the map and a camera to posses to look at the map?

[icy dragon]

Basically that, yes.

Performance wise, it's actually less demanding as you don't need to go through Canvas Render Target.

[trim matrix]

does anyone know can i access a variable (component in my case) from an instance of a class inside of the class itself?

for example this ObjectMesh that i added in the object?

[maiden wadi]

No. Because it's not part of the base class.

[untold mist]

get child components?

[trim matrix]

..and then cast it to that component? wow i never thought you can do that. thanks!

yep it does work, thanks again 😄

[untold mist]

👍

[safe iron]

Guys... this is embarassing to ask... I am still stuck on the problem of yesterday
Briefly, I have a map of integers to actor object references as a weapon roster, and I need to overwrite the value of a object reference in a given index when the player pickups a weapon, and it works ine until here, the weapon gets added and the engine finds it in the map

The problem comes in setting its visibility and attaching it to the GripPoint, I use a node called Get Parent Component, and the value it outputs is not valid for the weapon that gets added

I mean, it works fine for all the weapons that are already in the map, but not for the weapon that gets added later, so it just stays on the ground, always visible, firing from that position, here are some screenshots of the code

I asked the same thing yesterday and got an answer but it ended up confusing me even more and I felt awkward asking again, also it seems like the guy who answered thought the weapon wasn't added correctly, while it is added correctly, it just fails getting the parent component and I have no idea how to solve that, I tried many different things but none worked

[sharp rapids]

Are your weapons separate Actors?

[safe iron]

All child actors of a master weapon

[sharp rapids]

I'm guessing it doesn't work because Actors don't have a Parent Component

[safe iron]

Oh... then why does it work with all the other weapons except this one?

Maybe it's because the other weapons are already put on the character when the game starts?

[sharp rapids]

hmm, I don't know
Can you try 'Set Actor hidden in Game' instead of 'Set Visibility'?

[safe iron]

I'll try and see if it works... I'll message the result back

It works

Now it succesfully changes the visibility, but I still need to attach it to the GripPoint

Nvm solved it

Thanks a lot for the help, I would have never figured that hidden in game thing on my own

[cobalt lynx]

Hey, Any One know how to fix this?

I have added collision shapes to the front part of the forklift in my physic asset but since then it just falles of as soon as I start to play. I have added a Constraint to the body but it does unfortunatly not work.

[spark steppe]

why did you add physics in the first place?

also "i've added a constraint" is a bit vague

have you added angular limits and a soft constraint? also which physics engine is used? (and btw. theres #legacy-physics )

[cobalt lynx]

If I do not add any boxes to it in the physic actor, it does not have any collision and this is what it needs to collide with the world and other physic actors.
Well I just rightclicked on it Constraint -> Body

[spark steppe]

so it's a skeletal mesh and you just want collision?

[cobalt lynx]

exactly

[spark steppe]

then select the physics bodies, on the top of the details panel you can set them to kinematic

that means they are only affected by animation, not by gravity and such (the constraint between the bodies can then also be removed)

[cobalt lynx]

Works, thank you!

well step back

does not fully work

it still does pass trough other objects

[spark steppe]

that's probably related to the collision settings of your actor

get sure to have it block on the correct channels

anyways, for the forklift i would go with a static mesh anyways, i don't see any benefit of having a skeletal mesh

[cobalt lynx]

It's a drivable vehicle

[spark steppe]

yea, but you can separate the wheels and fork and animate them even as static meshs

[cobalt lynx]

this again creates the big issue that it's passing trough objects. I can now still drive trough a static wall with the fork until it hit's the collision of the vehicle body.

[spark steppe]

select the body in the physics asset and check if collision response is enabled

and if it's set to simple as complex

[cobalt lynx]

it's set this way

[spark steppe]

ok, can you show the collision settings of your actor, too?

[cobalt lynx]

the wall?

[spark steppe]

no, the forklift actor

[cobalt lynx]

The body in the physic asset as the exact same setting

[spark steppe]

not the physics asset

the actor blueprint

the one you actually place in the level

[cobalt lynx]

This is the mesh from the vhicle blueprint

[spark steppe]

ok

and the wall?

does it block on the vehicle channel

[cobalt lynx]

it's just the default cube with no changes

[spark steppe]

idk what the defaults are 😛

[cobalt lynx]

yes it does block the vehicle and does work for the main body but just not the fork.

Same issue if I replace the fork with static meshes with collision. for dirving the meshes are ignored

[spark steppe]

in the editor viewport, there's that small show button on top, check collision there

does it show the collision box for the fork?

[cobalt lynx]

yes, it's in green, the rest of the forklift collision is in purple

[spark steppe]

hm. no idea honestly what else you could check

i would go through all the physics/collision settings in the fork lift actor, your physics asset should be good

[cobalt lynx]

If I the box to default and not kinematic, it wobbles around but collides with the world

[spark steppe]

ok, that's interesting...

[cobalt lynx]

If I just could find a way to stop wobble. I tought the constraint where to prevent this

short afk, back in 10 min

[spark steppe]

https://forums.unrealengine.com/t/no-collisions-when-bone-set-to-kinematic/294258/4 funny enough this is also about a fork lift 😄

honestly i would just make it a static mesh. that makes it way easier to deal with all of that imho

but i've not worked with vehicles yet, maybe it's more convenient to go with Skeletal Mesh for them 🤷

[cobalt lynx]

I actually tried static mesh before but is also just passes trough static objects

[bleak swift]

If I wanted to replicate the rotation would I need to set these in a variable instead?

[keen hedge]

Hi, so Child Actor Templates can be used to set child actor variables from within the parent's blueprint. But is there any way to do so per instance from the editor itself, on the parent blueprint instance?

[odd ember]

not without some weird proxy variables. it's recommended not to use child actor components

they are not very well performing and might turn out buggy

you can spawn actors and attach them instead

[keen hedge]

But what's the alternative? Create a million child blueprint classes :/ ?

Or attach at construction/begin play time and then have duplicate variables between parent and child actors to propagate?

[odd ember]

@keen hedge

[keen hedge]

That wouldn't be visible from the editor though, unless it happens in the construction script of the parent, right?

[odd ember]

no but equally child actor components aren't visible either

you'll have to have proxy variables all the same

or just consider another workflow

[keen hedge]

Thanks! Do you have any suggestions maybe?

For a parent->child like interaction with actors, where I would ideally like to control both from the editor itself rather than blueprints

[trim matrix]

hi everyone! any idea how to get all staticMeshComponent from a BP? (there is no meshComponent from GetAllActorClass)

[lunar nest]

GetComponentsByClass?

[keen hedge]

GetComponentByClass returns an array of all components of certain class

[odd ember]

I'd need context

[trim matrix]

but it give mes an error...

[lunar nest]

Replace the GetAllActorsOfClass node by a GetComponentsByClass node

[trim matrix]

ok! trying

[keen hedge]

@odd ember Let's say a stand of items, where the item stand is the parent and the item is the child. The stand blueprint initializes the item and sets its position and rotation on the stand. The item can then be interacted with differently, depending on the item type (that's why the item is an actor, rather than a static mesh component on the stand). If you have ideas, you can PM me so that we don't spam the channel here. Thanks!

[trim matrix]

like this?

[lunar nest]

Seems right. I assume it's not giving you any errors anymore?

[trim matrix]

no it seems to work well!

thank you @lunar nest

[lunar nest]

Np

[trim matrix]

guys, do you know how to edit the range of an array? let's say i want to remove the first array of a value

[odd ember]

I don't do PMs, but basically if you can make a custom component then maybe that's the way to go. otherwise you'd have to find a way to expose parameters on actors

the other way to do it is to handle all the actor instances as BP children in the context browser, and fix the parameter values there

[mellow folio]

did you seach for "remove"

[graceful forum]

I'm using multisphere (also tried capsule, same reuslt) trace node to get different hit results for each bone that hit on an enemy character. When the enemy is in range of a sphere originated at trace start location with given radius, I get as many bones as it's hitting. When I get further from the start point but staying inside the trace, I only get a single hit result with closest bone. Shouldn't I get the same result whatever my distance is to the start point?

[wicked osprey]

Guys, such a question. What is the way to make it so that I can hold some objects in my hand, and some not? Here is the architecture of the items, but I still don’t understand how best to implement this selection logic. Create a Wearable variable of type bool in ItemBase, or what?

[spark steppe]

yes, or create a child of ItemBase which is ItemBaseEquipable

which also introduces the methods for equip/unequip

[wicked osprey]

How can I check that the item I want to wear is equip? Without cast

[mellow folio]

Yes

Either a bool on the itemparent

or use an interface, which is less ideal in this case

just put a bool on the parent

[heady saffron]

Can someone tell me why the true part of the boolean is not working? this is in my actor class from character.

[stable onyx]

Good morning everybody. Is it possible to have something like EditCondition in blueprints for certain variables to only display depending on the value of an enum?

[graceful forum]

What is your aim in here? Wouldn't both of the cases set the ADSCamera to the same position since at the end they're both connected to the SetWorldLocation node?

[heady saffron]

@graceful forum ignore the code for now, I was just trying to see if the "if true" node is being triggered which it isnt, but basically when the player slides the camera remains in the same position when scoping in, so I will rotate the camera when he is sliding

[trim matrix]

ok will try!

[graceful forum]

Then it should be either your case is false or cast is not valid. Did you try to use the debugger?

[spark steppe]

or your bool is just not working as intended

[heady saffron]

@graceful forum I did, the node never returns true but the cast is valid

I assume there is some rule when casting that i forgot that is causing this issue

[graceful forum]

Are you sure you're setting your variable to true somewhere?

[heady saffron]

@graceful forum yes and i tested it out

it also turns false at the end

of the action, but i tested both ways

[graceful forum]

Is this a multiplayer project?

[heady saffron]

I will turn it into one, but as of now no

[graceful forum]

Maybe you're casting another character

Oh okay

[heady saffron]

if u want I can share my screen if that makes it easier

[graceful forum]

Sure, is it possible to use the voice channels in here for that

Nevermind we can't stream there

[tropic pecan]

I ask again, does anybody know a function structure to move a camera with a spline? I figured to use a timeline already but how must it connect?

[odd ember]

you can use SetViewTargetWithBlend and pick different points and transforms

[tropic pecan]

It's a bit more complicated than that. The camera must move with the spline is my asking.

[odd ember]

otherwise I believe you'll need to use some camera rigs like rhino or what have you, that might be part of the cinematic camera suite

[tropic pecan]

I'm not sure I understand, rhino?

[odd ember]

rhino is a rig

or it may be that you need to use sequencer

[tropic pecan]

There's a JRPG blueprint that has an example of what I'm trying to achieve though I don't want loops. I at least think this is what I'm looking for.

These are the examples of what I kind of want to achieve though the functions are not right. I know I could redo it but how?

[odd ember]

any spline will have to have loop throughs

[tropic pecan]

Could timelines like move on after camera reaches the end of their splines?

[wise swan]

any1 know what this error is?

[odd ember]

#multiplayer

[wise swan]

nobody is replying there

so asked here

[odd ember]

reposting is generally frowned upon. but in either case the #multiplayer channel is where you can get answers for the most part

[wise swan]

yeah ik

sorry for reposting

[odd ember]

well if you iterate over them with an array then yeah you could loop the same timeline over

if that's what you're asking

[tropic pecan]

No, I mean after the camera has reached it's end of the spline, it moves on to the next structure.

[odd ember]

sure, same principle

you just use an array of spline components instead of spline points

[icy dragon]

I think it would be easier to do this with relative sequence

[tropic pecan]

I'm not entirely sure if that will be what I want for a turn based JRPG in the Persona 5 Style.

If you played the game, I'm certain you'd know what I mean. This isn't going to get any easier...

[icy dragon]

And I do the similar thing based on FF7 Remake's limit breaks or magic cast

[tropic pecan]

There is a blueprint made by Trevor Betts on Youtube that has an extremely good example of what I'm looking for. It may be able to solve most of my questions. Though it seems the maker doesn't have any connection for it. Sigh since I can't seem to find good guidance and too many are saying "sequencer" I guess I'll have to try though I'm very uncertain if it's the correct type to use.

https://www.youtube.com/watch?v=HooNRb6_kMk

[gentle urchin]

What about a custom camera manager

That'd probably be the best class for this

Personally i'd try and disconnect it from 'splines etc and do it mathematically, procedural like

[tropic pecan]

I don't quite know how to sort that out if that's the case.

[heady saffron]

Can someone tell me why the true part of the boolean is not working? this is in my actor class from character.
(reuploading to see if anyone knows the fix)

[gentle urchin]

Defining start and end points and a method for moving between them according to desired options

[spark steppe]

it's not working because your bool is always false

it's kind of obvious

[gentle urchin]

Id imagine some random camera angle/style picking

[heady saffron]

@spark steppe nope, bool was confirmed true

[spark steppe]

in the same method?

[heady saffron]

issue is when it is referenced on a different blueprint, it doesnt work

wanna vc and see?

[spark steppe]

then your player reference is wrong

no, sorry

[heady saffron]

np

i only have 1 player ref

so its not that either, unless there is a rule that i forgot when referencing to certain classes

[gentle urchin]

Watching ff7 itd mostly just a singulsr focus point and no animations, isnt it?

[spark steppe]

have you placed a print string node between the cast and the branch which prints the value of the bool?

[gentle urchin]

A branch goes where its told to

If it doesnt go true its because of the critera is false

[spark steppe]

show where you set the bool to true

[heady saffron]

ben i did and it shows the string

[spark steppe]

that's impossible

if the bool is true it will take the true branch

[heady saffron]

I also tested out using a print string if that returns true btw

[spark steppe]

that's in the player character blueprint?

[heady saffron]

that is where I set it to be true

yes ben

[gentle urchin]

What event calls this

And when in relation to your issue

Print strings is the way to go

[heady saffron]

it'll be easier to talk instead of typing, but its when i click 2 keys I slide and it is set to true

Its when i reference the bool in a different blueprint it isn't being recognized. only the false branch works

[gentle urchin]

So bool is set when 2 keys are pressed

And is read when?

On tick?

[heady saffron]

wdym is read when? do u mean in the first pic i sent?

[gentle urchin]

Yupp

[heady saffron]

thats in my actors bp, im trying to have the camera be adjusted when sliding is set to true

and its on beginplay

[spark steppe]

oO