blueprint

[sand yacht]

nope just one floor

[strong halo]

how exactly procedural?

[sand yacht]

just like this
https://www.youtube.com/watch?v=N6J2Zju_Y4I&t=462s

planning on remaking this game

[strong halo]

looks like a simple maze

[sand yacht]

yep, however I cant really find any tutorials on actual mazes

problem is I want to be able to add custom rooms in the generation, as well as different meshes spawning from time to time

[atomic salmon]

@umbral ginkgoyou can turn the trigger box into a blueprint and spawn your actor from it

[umbral ginkgo]

Thx will have to try it

[strong halo]

@sand yacht you can make a number of prefab sections, add metadata specifying door position, and fill the level with those prefabs

[tawdry surge]

Or brute force and just have overlapping sublevels and choose which one to load with a switch and a random int in range

[sand yacht]

thanks for the suggestions ill start looking into it

[lyric marsh]

Im tring to create a steering wheel in VR that locks to your hand anyone have any resources to look at

[faint pasture]

Start with grabbing a ball. Once you got that, grab a wheel.

[lyric marsh]

Thanks @faint pasture yeah I've got grabbing objects etc working however when I use for example Look at rotation, the rotation isnt around the x axis and once it reaches a certain value on the Y or Z axis it starts rotating backwards till it snaps to the other side

[manic river]

Is it possible to use soft references with Get Actor of Class node? I'm not sure if it makes sense as I will have to cast to it anyway so it will be always loaded regardless

[mild jacinth]

Hi, so I have an issue where one of my blueprints acts weird and crashes the whole engine. I'm getting the " EXCEPTION_ACCESS_VIOLATION writing address 0x0000000000000030" error and when I remove it from Content browser, open project, project opens, and i can quickly pop the blueprint back in folder and open it - everything works. When I compile through VSCode 2019 then it passes aswell, what could be the problem?

[manic river]

Hard to say, you should download debugging symbols for the engine and paste call stack here

[mild jacinth]

editor symbols for debugging from Epic Games Launcher "options"? I see it's roughly 36gb, it's not a problem but how would i use it?

[manic river]

When engine crashes you'll see more info about what happened, not just what you've posted so we can know what happened

[atomic salmon]

@lyric marshif you still have issues you should ask this in #virtual-reality because hand tracking/motion controller tracking techniques are specific to VR

[trim matrix]

Anyone help, if I know packman moves 11 tiles per sec and a tile is 8x8, packman base speed would be 88 tiles per second.

Is there any math that I can use to covert this into the max walk speed of the character movement??

Please

[gentle urchin]

tilespeed * tilesize

altho your sentence doesnt make sense to me

either the speed is 11 tiles/sec or its 88 tiles/sec

[gentle urchin]

see,

pixels per sec.

!= tiles per sec.

[trim matrix]

I will have wrote it down wrong, now that's cleared up though, how would I if possible get the 88 pixels per sec to a number character move could use ?

I awful at maths like really bad so I hit walls when math becomes involved

[icy dragon]

I'm just going with tile based approach, with some interp in between.

[gentle urchin]

^

best solution

[trim matrix]

Interp between ??

One thing I'm not using it tiles so ATM I don't have anything which says it's travelling between tile A to B at this speed

[icy dragon]

Interp between grid / tile.

[trim matrix]

Don't think I'm using grid either

Just standard player character with free movement

[icy dragon]

So instead of moving X pixels per second, move X tiles per second, and have interpolation in between.
That is if you want to replicate pacman the way it supposed to be.

[trim matrix]

Well kinda of I think I am to far in to start redoing how player works so was just wondering if there was math to be able to take know values and workout best speed value kind of

Or I'll have to do it by eye

[gentle urchin]

the math is just distance you wanna travel over time ,

so again, tilesize * tiles per second (11)

gives you the speed

[trim matrix]

So 968

That seems fairly quick well for ue4 that fairly quick

[gentle urchin]

if your tilesize is 88uu then yes

[trim matrix]

Don't have a tile size as I'm not running based on tiles, in simple terms it's a mesh of map, approx size of packman and ghost

Ghost use ai controller standard

[gentle urchin]

Tells me nothing, but as long as you know that's the equivalence of your tilesize, then good stuff (Y)

[trim matrix]

So they don't adhere to tiles etc and packman is top down character stripped with wasd control method

[gentle urchin]

Tilesize == the size of whatever you call a tile

[trim matrix]

I don't call anything a tile, I'm feeling like I might have to do this by eye.

[gentle urchin]

If you dont call anything a tile, then why do you care about pacmans tilespeed? its not gonna translate to anything

[trim matrix]

Because the packman game uses tiles so it's speed is based on the 11 tiles per secs etc

[gentle urchin]

right,, so you need a comparable reference.

If you dont have that, the entire idea of equivalent speed goes out the window

[trim matrix]

Yeah I'm thinking I'll just have to time packman moving in game and math it best I can with my version

[gentle urchin]

Your map is the same size as packmans

right?

[trim matrix]

Just abouts

[gentle urchin]

So then you know the just abouts tilesize aswell.

[trim matrix]

Easier to alter it if not its only mesh end of the day

[gentle urchin]

if ur not sure, you can always make a editor bp to measure.

[trim matrix]

Well my mesh is in blender and I have a top down ref of the map

[sharp rapids]

You have to make some kind of imaginary reference between the pixels and the measurement in Unreal
Let's assume, one pixel's length is 1m
So, 11 pixels/sec = 11 m / sec

Or 1100 cm/sec

[trim matrix]

Well I've found that

Which kind of give me sizes.

[gentle urchin]

Super easy measuring;

Measurepoint is just actor. Measures the accumulative distance between all the measurepoints

in your case, just use 2.

[reef turtle]

Hello everyone ,
I'm facing situation which sounds easy to solve, but i'm unable to figureout good solution.

I have 5 UI panel at different location (same class)
at every location I want to give value in public variable

such as, at location 1 Apple value is 5 ; but at location 2 Apple value is 15 , and 99 at 3rd location n so on..

and I want to print these values, as per location button is pressed.

any kind of help , idea , suggestion would be appreciated.

thanks 🙂

[gentle urchin]

guess you want it in uu, so just dont divide float by 100.

[trim matrix]

So I would need these message boxes in the world which pacman would be passing through

Sorry messurepoint ??

[gentle urchin]

Nope, this is just for measureing your mesh, since you tell me you dont know the size of a tile

• fixed

[trim matrix]

Ohh

[gentle urchin]

so just add them to the scene, 1 measurer and 2 measure points;

then click "Measure" on the measure actor

[trim matrix]

Rightt

[gentle urchin]

appears when Call in Editor is set.

[trim matrix]

The actor would be the maze mesh

[gentle urchin]

the mesh you're measuring, yes

[trim matrix]

Right I'll give this ago tonight then see how far I get

[gentle urchin]

this is just to get the relative size of your tiles/map, not ment to be used in the game

[trim matrix]

In the screenshot I sent I have the pixels of the map not sure if that helps

[gentle urchin]

seems like ur very close to just knowing the distance tho

the green line is your tilesize

from wall to corner

[trim matrix]

Rightt

[sharp rapids]

They're still just pixels, Unreal uses centimetres
we cannot directly convert from pixel to cm
We need some kind of arbitrary value to multiply the pixel by
Use @gentle urchin method to measure your map tiles, then you can determine the speed

[mild jacinth]

any idea if epic games servers are down or something? I've been trying to download the debugger symbols feature but it's stuck at trying to download. it says "We're sorry, looks like we have trouble connecting. We'll try again" - using 4.27.1 (Updating 0.0/3.3gb) (using stable connection never had such issue before..)

[manic river]

Had the same issue. Only reinstall works

[spice smelt]

is there a way to switch between the two rotation types in blueprint?

[trim matrix]

Can you send this again some of it is blury ??

[spice smelt]

it's not blurry 🤔

[trim matrix]

Oh prob my phone then

[sharp rapids]

@spice smelt I believe there are separate nodes for setting location rotation in relative/world space

[trim matrix]

I'm looking through discord on my phone so prob that

[spice smelt]

yeah, but that's what they do, they set it; I want to change the behaviour of the object when the object it's attached to changes its transform

when you set that to world, the attached object ignores its owner rotations

[sharp rapids]

@spice smelt world and relative location both exist all the time
You cannot change the behaviour from one space to other. Objects exist in both spaces simultaneously

[spice smelt]

you can change the behaviour, it's as easy as clicking on that dropdown 😅 I just can't find a way to change it via code

[sharp rapids]

You don't change the behaviour, you just change the way of looking at the value

[spice smelt]

I'm seeing a very different behaviour here (i'm rotating the cube)

The very answer to this question says to change the rotation type ("Attach component to actor without following rotation?")
https://answers.unrealengine.com/questions/986012/attach-component-to-actor-without-following-rotati.html

[trim matrix]

Thanks it's my stupid phone I'll need to wait until tonight when I'm on my pc to load up discord on there things will show much clearer then

Thanks for resending it though appreciated

[gentle urchin]

if ur just viewing it in discord its heavily compressed. you must download it if on the phone 😛

[mild jacinth]

restarting pc worked instead,(it starts verifying and then installing debugger) reinstalling wasn't necessary thought it would be good to know for future cases.
thanks

[faint pasture]

Since when is that a thing? Is it new?

[spice smelt]

you're asking the wrong person 😅

[faint pasture]

Uh since when is this a thing?

[gentle urchin]

think it's been there for a while

[spice smelt]

so back to my question, no way of changing it in blueprint? I tried anything with "rotate", "rotation" but no autocomplete on that regard came out

[fossil crystal]

having an issue in VR whenever i try to teleport through a door its porting me onto the roof

how can i prevent that? same thing if i put the teleport arrow on the wall it will take me onto the roof, i want to disable that possibility

[tawdry surge]

@spice smelt wouldn't you just have the cylinder not parented to the cube and rotate them independently

Still in the same BP

[spice smelt]

no because i still need them to behave as relative with location and scaling

[fossil crystal]

Here's my NavMeshBounds doorways its extremely narrow, how can i adjust this?

[spice smelt]

imagine a camera on the commander cupola of a tank, you might want it parented to the cupola, but without following its parent rotations

[tawdry surge]

Id use a socket for that

[fossil crystal]

NM i think I got it, How can you prevent teleporting and your shoulder is inside a wall?

[sharp rapids]

Huh, I just tried this
I never knew this 🤔

[rare gale]

@unique falcon Did you get your projection working? I hadn't seen that way of doing it before so I'm curious if that worked for you.

[sharp rapids]

There doesn't seem a way to do it via Blueprints,
But you could do it on your own using SetWorldRotation

no docs on this either 🤔

[sharp rapids]

This works
But we're manually setting the rotation here

[calm rune]

Is there similar node but for blueprints? I want to place random blueprint actor. Currently it works only with mesh since I could only find the static mesh node

[trim matrix]

@gentle urchin so found this which helps alot kinda shows where tiles would be

[tight schooner]

Random BP actor huh... Spawn Actor From Class but with some logic determining the class.

Don't think there's a way to change the class after spawning

[brazen merlin]

https://pacman.holenet.info/ << This has literally all the info you have been looking at from other places

[tight schooner]

I had a use case for this too but I was lazy and ended up setting rotation on tick 😅

Thinking about it again, there might be a hare brained workaround where you have a scene component attached to the tank body (or whatever the working metaphor is) that has the special world rotation setting on it, and then dynamically detach/reattach the turret component to the tank body or the scene component depending on the desired transform-inheritance behavior.

[trim matrix]

Omg that's awsome that

That should help hopefully once this speed thing is sorted which I'll try tonight

What would be best way of the level system. Like could I create a table which has the levels and what values need setting on each level

Then when a new newlevel start increment level and pull through the needed values for that variable ?

[cursive temple]

Trying to understand the Primary Data Asset (PDA)and Data Asset (DA) relationship but having an issue. When I create a PDA with the variables I need, then create a DA from said PDA, none of the variables show up on the DA. What am I doing wrong?

[faint pasture]

Level as in map or level as in character level?

[tight schooner]

Data assets are weird. Dunno where you went wrong but I'll briefly describe the workflow.

Make a new BP class with the parent class, Primary Data Asset. Add a variable for testing. Compile/save.

Make a new asset of type: Miscellaneous --> Data Asset ... and select the PDA class you just made. If you open your new data asset, you should see the variable, and the parent class (top right of UI) should end with an "_C"

here's a Mathew Wadstein video on it: https://www.youtube.com/watch?v=hcwo5m8E_1o

[cursive temple]

Yeah, that is the video and process I was following. Looks like it is bugged in 5.0 as I just tested in 4.27 and works as expected.

[tight schooner]

oh ok, couldn't tell you about UE5

the more I hear about UE5, the more I'm certain my current project wouldn't survive the migration...

[cursive temple]

Yeah, coming back to Unreal after 10 years in Unity and thought I would give 5 a go, but looks like it still needs to cook awhile longer.

[trim matrix]

Level as in map, the map remains same but with each increase in level changes are applied, sped up ghost and pm changes if spawn fruit etc

I want a way to same at this level, these are setting to apply to everything. Then next level apply all these setting.

Is it data struct I'm thinking of ??

[faint pasture]

GameMode or GameStaye should have some function or event to set the new level. You can either use math or a data table to drive the various data based on current level.

[kind forge]

Hello. How can I make a high resolution screenshot of the level for my minimap and bigmap?

[hybrid ether]

Quick math question: I have float range in 0 - 100 (0 = blue team, 100 = red team). I want flag be y = 250 at float 100 and 0 but when float is 50 flag y = 50. Like Conquest flag system.

Like this

[waxen gull]

look

[spark steppe]

think of it as range 0-50

[waxen gull]

move score from (0 to - 100) to (-50 to 50)

[spark steppe]

that's even better^

[silver river]

can anyone tell me where my error is?

[spark steppe]

yes, between keyboard and chair^

[waxen gull]

then it is just (Score of 50 = 100% of Flag max Height; Score of 25 = 50% of Flag max Height)

[hybrid ether]

Okay!

[waxen gull]

@silver river is that self made or imported ?

[silver river]

Also I seem to have an error here, anyone know what might be the cause?

[waxen gull]

answer my Question maby ?

[spark steppe]

he's just copy pasting from blueprints from hell -.-

[waxen gull]

xD

[spark steppe]

https://blueprintsfromhell.tumblr.com/

[silver river]

just googled it guys, tryna be funny here

[waxen gull]

k

ahah xD

Blueprints of hell

[silver river]

Is there also a cleanest BP thing?

[spark steppe]

what do you wanna see? an empty graph?

with a comment "Look at c++ sources for details"

[silver river]

I want to see extremely pixel perfect straight lines

[waxen gull]

Got a question too btw.

Trying out some stuff with data bases

and came to this

the thing i am missin there is the force to manipulate not just which item is stored

i want to manipulate the amount aswell

dont know how to make it tough

[spark steppe]

is the storage component self made?

[waxen gull]

yea

[spark steppe]

then change that array to an map, which has the item first, and integer as key (for the amount)

[trim matrix]

Hi, i created a int variable that i setup to 0 when Ai enemy reach a targetpoint, now i want to tell to the Ai AnimBP to play an animation when this happen

[waxen gull]

this ?

[trim matrix]

i calle d the variable and check if below 1

[spark steppe]

get anim instance on the mesh => play slot montage

that slot should be added to your animation blueprint, how it overrides the actual behavior is up to you, as you have to implement the slot in your animation flow somehow

slot montage should perform better than polling the value each frame

[waxen gull]

@spark steppe ?

#blueprint message

[spark steppe]

yes, the last one

[waxen gull]

its grayed out

[spark steppe]

that's weird, what is the datatype of the array?

[solid nexus]

Heyo - What's the best method for attaching a static mesh to another mesh at a specific location? I thought it would be 'AttachActortoActor' or 'AttachComponenttoComponent' but it doesn't allow me to enter a specific location.

[trim matrix]

ok thx

[solid nexus]

I'm trying to make it so the player can place mines on objects at specific locations

[waxen gull]

@spark steppe Data Table Row

[young sandal]

How to disable cursor ray-cast so that it does not react to collisions
I think the problem is here:

[spark steppe]

both(?) allow you to set the socket name

[spark steppe]

can you try to create a new variable, make it a map first and then change the datatypes?

[solid nexus]

So you're saying detect the hit of where the player is placing it, and get the nearest socket name to attach to? Does it have to be a socket though?

[spark steppe]

use another channel for the cursor cast

[solid nexus]

I don't necessarily want it to attach to a socket - I'd like to be able to place it anywhere on the mesh surface

[spark steppe]

then your best bet is to attach it to no socket (None) and use set relative transform/location, after attaching it, to set the offset

[solid nexus]

Ah good call, thank you!

[waxen gull]

@spark steppe Sure i can do it, thing is that i lose the functionality of this heavenly Drop-down menu i can select my item with:

[young sandal]

If possible, more details please, I'm just learning.

[spark steppe]

you are currentliy casting on visibility channel which includes pretty much all colliders, you can change that to other channels tho

but i'm not sure if you get a good result if it doesn't collide with anything either

what is wrong with it colliding with anything btw?

[waxen gull]

?#blueprint message

[young sandal]

I get character rotation from all objects that have collision

[spark steppe]

i have no idea on that one, sorry

[spark steppe]

no, you get the location of them and the rotation relative to your player actor

[young sandal]

and so on from every wall

[spark steppe]

well, custom collision channels are the way to go to exclude/include certain things to respond to traces

and then you can cast on that channel

https://www.youtube.com/watch?v=O8aV86Gdce8 this may help

[dawn gazelle]

You can't use a structure as the key for a map, that's why it's greyed out. Change the variable temporarily to an integer or something like that, then change it to a map, then you can specify your structure as the value, and whatever you wish as the key.

[spark steppe]

but it also depends on what behavior you actually want, so it's hard to point you in a certain direction

[solid nexus]

@spark steppe Worked perfectly, much appreciated!

[spark steppe]

doesn't help him, he wants to add an amount to the row data (for inventory probably)

so he would need the amount as value and the struct as key

maybe you can make a custom struct which has the data table row struct and an integer?

[waxen gull]

had internet timeout

last thing i asked how you would setup a storage box system where you can individually decide whats and how much is inside

[dawn gazelle]

Seems a little messy of a system to make things slightly easier on the developer's end.
One could easily use a map variable with a just the row name as the key and an integer for a quantity. Assuming all your items are in the same table of course.

[waxen gull]

sure

[spark steppe]

guys.... i want to know if the custom struct works 😛

can't launch the engine right now

[waxen gull]

what happend ?

[spark steppe]

yea create a new struct, add the data table row struct as one field, and an integer for the amount as 2nd field

then you could use that struct on an array

however, it's less optimal, as searching for items is pretty much like unfolding russian dolls 😄

[dawn gazelle]

That would work.

But.. yeah...a bit messy to unpack.

[waxen gull]

trying right now with a little clucky idea

to add in a second tab i can change amount

[spark steppe]

thanks

guess you could make a custom struct in c++ which has the amount value in the row description

[waxen gull]

Is there an Construction script for Actor Components ?

[spark steppe]

no

[waxen gull]

something similar ?

[spark steppe]

not that im aware of

begin play event is a thing iirc

[odd ember]

https://tenor.com/view/i-must-break-you-fifidonia-break-rude-stalone-gif-14615906

[spark steppe]

well, the c++ struct also loses the search function for row names

[waxen gull]

however

got a way

even while its clunky a bit

[spark steppe]

which is it?

it's weird that it loses it's functionality, the editor probably has some edge case which adds the search method for exactly that one struct

[waxen gull]

i add another list to it

once i got to set another Amount for something ( like coins) i can update by a funciton and then set it to the desired amount

[spark steppe]

yea, but that's nuts

[dawn gazelle]

Agreed

[spark steppe]

as you could have an item with the same name in 2 different tables

maybe not in your game, but generally speaking

[waxen gull]

yea

i mean it ok

name is just so that i know what i am changing

for amount

[odd ember]

what is this for?

[dawn gazelle]

You really should only be using the data table row as a means of reading the details of an item.
The row name can be used as an "ID" for the item. You then use that "ID" as the key in a map, with the value as an integer for the quantity, and there is your inventory.

If you're going to have item slots where you can have the same item in multiple places in your inventory, then you do a custom struct array but you don't need to store the reference to the data table still.. Just the item ID, and a quantity for each slot.

[waxen gull]

...

[tight schooner]

you can do something hack-y... calling a custom function in a component via the host's construction script. But you can't get instance-overridden variables/data from the component; I've tried. I'm not quite sure if setting variables on the component also works this way. I have some vague recollection that it does weird things, so you should use BeginPlay for doing anything real for setting things dynamically on components.

Using an editor-only function (or editor utility widget) like you're doing is OK though for level design purposes.

[waxen gull]

wtf is going on xD

this all is just a setup for viewport

[odd ember]

cpp has InitializeComponent

[waxen gull]

to setup loot inside of storage boxes

manually

[odd ember]

you could have a function be called there. but that's not the same as construction script to be fair

[waxen gull]

at the end it might be just a waste of some RAM and CPU

[odd ember]

so.... why do you need to expose data tables?

[waxen gull]

to change loot inside

[odd ember]

data tables can't be changed

outside of the data table editor

they're supposed to be static data

[spark steppe]

he uses a array of row handles to define the loot on the lootbox actor

so he can select items from his table

[odd ember]

what you're probably looking for is something like a DataAsset

[faint pasture]

A data table would represent ALL loot available in the game or whatever. Loot inside something should be an array of structs or handles or something like it.

[spark steppe]

that's what he does^

[odd ember]

so for that to work you'd want some sort of datatable query

which again doesn't exist

[spark steppe]

it does exist

Data Table Row Handle Struct 😛

[waxen gull]

i have an idea

Big Noob Code Presentation in Programmer Parlor Voicechat

nvm

[odd ember]

that's not the same. structs already aren't really mutable in blueprint, so anything with setting a row handle will be hacky at best

[tight schooner]

I have a general, somewhat academic BP question. What's the closest thing to making a globally accessible variable? Niagara and the Material Graph have an asset type called a "parameter collection" that, once made, can be slapped onto any graph/module, and that's pretty convenient. But for BP, I have to find and/or cast to a manager class, and manipulate an object reference to get the data out of it. I'm wondering if BP has a formal system that's more like a Parameter Collection.

[odd ember]

@waxen gull I would take a look at DataAssets and see if they could work for you

[waxen gull]

https://discord.gg/gR5MWBqg

join dc

i can screenshare to you if you like

be warned

i have bad english

[faint pasture]

Subsystems are globals you can just reach into if that's a thing you're interested in

[spark steppe]

i think you just have to ask an moderator to give you permission to stream here

[waxen gull]

know any moderator ?

who does not have anything else to do xD ?

[spark steppe]

they are in the user list on top?! 😄

[odd ember]

subsystems

[icy dragon]

Message @torn kettle with !stream command.

[odd ember]

they solve problems like nothing else

[tight schooner]

@faint pasture@odd ember thanks... I'm looking into it

[icy dragon]

Just make sure you don't get strike because of this...

[waxen gull]

ohh k

[icy dragon]

Delete it, for your own safety.

[waxen gull]

lol

[trim matrix]

I was thinking Data Table as I can define variables for each level entry can't i then pull out the values at the right times

[faint pasture]

Ya, row being level, data being a struct representing all the data you need.

[trim matrix]

This measure point has the codeing, what would i be putting into the BP Measure ??

[shadow crescent]

hey guys, is it possible to have an editable parameter feeding this sign node?

[odd ember]

I mean for something as simple as pacman you could define the levels through curves or math

[odd ember]

#graphics

[shadow crescent]

k

[odd ember]

static immutable data is only for games where it's really necessary. if it can be represented easier it should

[gentle urchin]

nothing at all. We're just using it for its world location

[trim matrix]

So at the moment i have 2 measure point in the world and one measure

the measurepoint has the code

[gentle urchin]

fair enough

[trim matrix]

and the measure actor is empty so far

[gentle urchin]

you did it the other way around but its ok 😄

[trim matrix]

do I have this wrong way round

[gentle urchin]

now just drop 2 measure points in the map

and press the magic measure

ignore the bp_measure , it can be deleted

[trim matrix]

thats the two white blobs next to each other

[gentle urchin]

select one of them

and press the 'measure' button

in the details panel

a print should show up in the left corner of the viewport

[trim matrix]

2.27uu apparently

[gentle urchin]

2,27m*

227 uu

so thats your tilesize

[trim matrix]

well i did have print string meter but then saw you changed it to say uu instad

*instead

[gentle urchin]

227uu * 11 =

yeah but i also removed the division 😄

[trim matrix]

ohhh

i did not notice that haha

[gentle urchin]

2497 is your movespeed

which is quite high

11 tiles per second

you'll fly through the map

TRON got nothing on you

[trim matrix]

yeah just calculating it it

i need my map bigger then in that case

much bigger

[gentle urchin]

Not really,

i think the speed is wrong 😛

[trim matrix]

in what way

[gentle urchin]

let me check

im not scientific,

but looks closer to like 9?

tiles per sec

well anyways

play it out and test it

If its to fast just adjust it

[trim matrix]

Can anyone tell me how I can teleport my player to the end position of the cinematics camera?

[primal stirrup]

Anyone that has experience parsing info from json using varest? cant wrap my head around it !

[odd ember]

there is a teleport node

[odd ember]

json is only available in #cpp generally. unless varest is a plugin, in which case I'd recommend #plugin-dev

[trim matrix]

I've tried that, however when I get my camera actor and get its position and rotation, it positions the player in the right place, but even if i hook up the camera's rotation, its not in the right direction

opposite direction actually

[primal stirrup]

@odd ember thank you - ill check out #plugin-dev 🙂

[odd ember]

sounds weird. if you have to pan the camera back you can use SetViewTargetWithBlend

[willow cedar]

Is there a way to set Max Velocity of a player. I use Add force to fly around, and would like to create a cap for it while still keeping control.

[odd ember]

is it a character?

[trim matrix]

900 odd would be

600 is defualt foir player charactor

[trim matrix]

900 odd would be
[22:11]
600 is defualt foir player charactor

[odd ember]

what's the issue?

[trim matrix]

so i've been trying to work out pac man speed

so far we have worked out that 8 tile size which is what the game uses turns out to be 2470 odd uu

which turns into something like 900 roughly speed way to fast in UE4

[faint pasture]

Pacman moves 11 tiles per second or 88px/sec so move him at that based on your chosen px size. I'd just do 1uu=1px to make things easy.

Then you can directly translate everything.

[gentle urchin]

^thats why the relative distance was part of it. Measuring the relative size, one tile (8 pix) is now translated to 227uu

which makes for an insane movespeed

[faint pasture]

Everything is relative, just choose your scaling factor and go from there. I'd do 1px=1uu or 10uu

[willow cedar]

Yeah, its a character

[trim matrix]

so what would that mean for me if I did that ??

[faint pasture]

That would mean you can just translate everything with the exact same numbers

[odd ember]

it should all be under the Flying movement mode

on the CMC

[faint pasture]

He'd move at 88uu/s

And a tile would be 11uu across

[trim matrix]

this translate i'm not really getting

so what i need to be doing is checking my map size then at this stage

LogBlueprintUserMessages: [BP_MeasurePoint2] Distnace: 3,084.004uu

[faint pasture]

Pick a f****** scaling factor and stick with it.

[trim matrix]

so far that is the UU map size across

[faint pasture]

I would go with one pixel equal one Unreal Unit. Then you don't have to do any math

Make the map 224x288

Etc

[trim matrix]

well i am concerned the map size of the would be tiny

as the 224x288 in pacman game terms is in pixels

[odd ember]

maybe just realize that you can't translate the speed 1:1

and focus on trying to match it as much as possible

a 10 min job instead of a 4 hour job

[trim matrix]

well i had a thought today to eye it from playing the game

[faint pasture]

You can if your scale isn't off in like seven different f****** ways. Just match everything up pixel to uu and it'll be exactly the same

Or pick whatever ratio you want to scale things up by, it doesn't make a difference in the end other than making your job more difficult

[trim matrix]

so time a simple movement from the classic game and match in ue4 version

[willow cedar]

I'm not using the flying mode though. It's for a Grapple ability

It keeps adding force, and I want to set a hard Velocity Limit

[trim matrix]

yeah all this pixel to UU stuff etc literally only been mentioned to me today so trying to replicate the move speed from a game that uses tiles to calculate speed to a Ue4 method i'm not 100% fast at getting there

so we have 3.5 seconds for pacman to travel from left map edge to right

so @gentle urchin never guess what

[dapper ore]

I am fucking going bonkers. I started a fresh level. I imported the top down starter content. I put in player spawn point and set the world settings to include the character, game controller, and game mode BP's and my move command will not trigger. My inputs are going through, but I don't know here it broke. Is there is setting someone where i have to click?\

[odd ember]

try in #legacy-physics

[trim matrix]

well just tried and 3.5 seconds to travel from left to right, in UE4 for it to roughly match I am looking at pacman going about 800 roughly

[faint pasture]

Set his speed to 88, make a tile size 11, and call it a damn day lol.

It's not rocket surgery

[trim matrix]

abd he is zoom zoom

[icy dragon]

Or just interp movement between tile, problem solved.

[trim matrix]

i'm not using tiles

[odd ember]

eyeball it

[trim matrix]

one thing i havn't copied but may as well have is the movement isn't base on tiles like it is in the classic game so taking the tile size 11 and setting his speed to 88 isn't an option unless i gut everything and start again making things with tiles being the method of movement

[trim matrix]

I am or at least for now I'm gonna go with what I have

the speed roughly works he just zoomy for now

[icy dragon]

So, you're essentially making PacMan clone, is that correct?

[faint pasture]

Dude if you want a 1:1, just do literally that. Copy sizes and speed 1:1. It'll match up pretty much exactly.

[odd ember]

doubt it will lmao

on the surface it's an easy job

[trim matrix]

technically yet but the goal wasn't to copy exact

[icy dragon]

But mechanically faithful to Pacman?

[faint pasture]

It'll get you closer than eyeballing it when the numbers you need are right on Google.

[trim matrix]

to get the same things implemented into UE4 so for once I myself can say yes it's a copy but still a working game on this occasion based on something already out there

one thing I have major issues with is i'll start out with a game idea and will lose track it'll then be disgarded

so this way i can prove to myself I can kinda do with my mind put to it

[icy dragon]

If it's not going to be mechanically faithful to PacMan mechanics, might as well treat it as a generic maze game.

[trim matrix]

well i'll get it as close as I can to Pacman

[odd ember]

welcome to game development

[trim matrix]

but so far sounds like i've gone about things movement in this case completey wrong way round

but ha ho see how fair i get before i shelf it

[faint pasture]

2Pacman

[odd ember]

I don't think copying it is going to net you the results

you can't translate pixels 1:1 to units

[icy dragon]

If you want to be faithful with Pacman mechanics, use the tile based movement. I never said teleport from one tile to another, but use the tile to make interpolated movement between tiles.

[trim matrix]

well from what i can see from reading up on something provided by someone else in here , the movment is constant

[faint pasture]

And why not? Assuming the pixels are square it'll get you in the right place.

[trim matrix]

and the Tiles tell the game firstly when the actor is

and then when it comes to option what way payer can turn

[icy dragon]

go to one tile to another in constant rate, interpolate the movement in between. you get yourself a pacman movement.

[trim matrix]

for example AI has a target but only decides one tile ahead of it's current

[faint pasture]

What's the difference between that and just walking at a constant speed? It's literally the same

Unless he can clip corners

[icy dragon]

Literally the same, but lest you get the tile based movement, because pixel accuracy is defenestrated in most cases in vanilla pacman.

[faint pasture]

So you're saying turns and stops can only happen at tiles.

[trim matrix]

??

turns and stops only happen at tiles ?

[faint pasture]

If that's the case then yeah I'd just pathfind to 1 tile away

[trim matrix]

turns can only happen at tiles the allow it

the AI will never full 180 as it has 4 option

left, up, down, right

[odd ember]

because you're treating the camera as if it's the same as it was in pacman. the screen distance would need to be identical. teh amount of orthography etc.

[trim matrix]

only time it will full 180 is when in chase

[faint pasture]

That's easy to do. I see no reason why you couldn't get everything exactly the same unless it had non-square pixels or some other weirdness. It'd be a lot closer starting point than just basing the scale around the default CMC movement speed which I'm assuming is what happened here

[icy dragon]

The only time when pixel accurate collision matters in Pacman is collisions with ghosts against Pacman.

[trim matrix]

yeah the collision is base on centre pixel of the ghost being in same tile of the centre pacman pixel

there a glitch you can do in classic game that if you can cross into a another tile and ghost is crossing into your tile exacly the game won't detect a collision

[odd ember]

you could, but it would take time figuring stuff out. as opposed to eyeballing it, which would be at most a 10 min job

sometimes it's not worth going the hard way

I'd say this is one such case

[trim matrix]

for something I'm not releasing this plus tpacman would sue me i'm not fussed about being dead accurate to the extreme

[odd ember]

nor does it matter

small imprecisions in game speed are not really perceptible

so you could just have a side by side comparison with the game and tune it

[trim matrix]

yeah improvements can always be made

[odd ember]

but you could find as well that having the exact game speed is a detriment etc.

[crimson depot]

I'm trying to make a rotate function that lets me move a camera centered around an actor. I have a spring arm with the camera attached and the mouse moves the camera but everything is sluggish. It's not just slow, it seems like it's resisting movement at some points. Any ideas? Here's my BP.

[odd ember]

we're in the realm of design, so some level of intangibility is OK. as long as you don't rely on it excessively

[odd ember]

can you show an example of what you're trying to accomplish? just posting your logic isn't going to help

[trim matrix]

I know about Set view target with blend, is it possible to keep cinematics from stopping automatically, blending the cinematic camera to the player camera, and then stop it?

[odd ember]

ask in #cinematics

[trim matrix]

I did last time no one answered

[trim matrix]

^

Well I asked a different question

no one answered

[crimson depot]

@odd ember

this is what I'm going for

https://streamable.com/6o16qr

and this is what mine looks like

https://streamable.com/4xsb3t

[odd ember]

seems like regular camera pan, should be a million tutorials on youtube for this

[crimson depot]

I looked at some forum posts to get the gist of it and then tried to do it myself probably should have just done that from the start

[trim matrix]

@odd ember so managed to get some pacman patrolling pattern going

which actually work quite well all rand from the Ai Director like you mentioned other day

[odd ember]

AI directors are the bomb diggity

[trim matrix]

in like good way

?

[odd ember]

yes

[trim matrix]

what i like about this which i've managed to do with you guide of course of get the AI Director to do the work let AI just request means I can keep BT clean and providing the AI Director is in the world the AI will have a Ref to it

plus all i do is give the AI Director the locations in an array and walla it'll increment etc

[odd ember]

that's how it should be

it's stuff like this that avoids you painting yourself into corners with solutions that are too specific

[trim matrix]

how you mean ??

[odd ember]

well consider all the solutions that didnt work

because there was too much stuff in one place

[trim matrix]

true

[odd ember]

I think you'd benefit from popping the coordinates into a grid or step size though

[trim matrix]

how difficult would it be so pick whip an actor from the actor to grab it's vector

[odd ember]

so they always go towards the center of a "tile", even if a tile doesn't exist

[odd ember]

pick whip?

[trim matrix]

you so in photoshop you can select a colour from a colour of a pixel

trying to think of examples

it's fine if not just thought how hard would it be to implemnet only for editor functions like

[odd ember]

there is a color picker already in unreal

it allows you to pick color from anywhere too, viewport included

[trim matrix]

so could i make something to do same for other things ??

[odd ember]

what do you want to do?

[trim matrix]

i was just gonna for quickness select the targetpoints for the arrays instead of copy and paste but it's not essiental

I want to go more on this you've mentioned

[trim matrix]

this

[odd ember]

well

if you consider that you have an AI director, you can also have a grid manager

that manages the grid

[trim matrix]

brb gonna grab me a cuppa

[odd ember]

that you can then query for locations

so let's say you have an approximate location, you could feed that into the grid manager and it would give you the center of the nearest tile

[trim matrix]

i'm back

i like the thinking

that would mean when in chase move they will still try to catch player but would be centre of grid which means as this is bassically a grid they would be going to places roughly central

[brittle mortar]

how do i get all children of a class as an array

[odd ember]

it would also mean that you can give out random coordinates on the grid instead of needing to necessarily feed exact coordinates in for the ghosts

[patent ermine]

Looking for some input/ideas. Lets suppose I spawn 1000 actors with a billboard component that always faces the camera. Think of it like a real estate listing. When zooming out in a browser, these points get grouped together. So if a number of actors are within a given radius, they would get grouped into a single actor and displayed as one. But when zooming in, they would ungroup, and appear at their proper position. Any ideas as to how to best achieve this?

[odd ember]

so it becomes more about what kind of pattern the ghosts have

and feeding them coodinates that fit that pattern

[trim matrix]

hmmmm

[odd ember]

so you'll have less manual input

[trim matrix]

well the ghost idea is they have patterns

[odd ember]

yep but currently you set those up manually right?

with a system like this you could automate it

[trim matrix]

the chase stuff yeah

[odd ember]

oh okay

[trim matrix]

they grab random from nav mesh could be up against a wall etc

[odd ember]

if you're already doing it then no problem

ah yeah fair

[trim matrix]

what would be better is only give the location if it's not up against a wall

[odd ember]

the grid manager could definitely still help align them

also

I would turn the ghosts so they face forward

towards the camera

[trim matrix]

also there isn't a way to keep them central to nav mesh ??

hmm well they look toward travel direction at min

[odd ember]

automatically? no, that would go against navmesh design

[trim matrix]

camera is looking from above

[odd ember]

no I mean visually

because right now the ghosts look more like pellets moving around

[trim matrix]

oh yeah so turn there mesh

[odd ember]

they don't have that ghost shape

[trim matrix]

hang on I know what you mean

[umbral ginkgo]

why is this not working. Trying to spawn in an actor and attach it to a game object but the final 'attach actor to component' bit messes it up. How do I fix this or is there a different way to achieve this?

[trim matrix]

so like that

[odd ember]

yep!

[trim matrix]

and then by turning off the contrller yaw they always face same way

[odd ember]

the actor bounds can stay the same, the mesh turning is just visual

[trim matrix]

yeah well thats what i've done

[odd ember]

try snap to target

location

[umbral ginkgo]

k

[odd ember]

but going back to this, making a grid manager seems like a good idea here

[trim matrix]

i do like the idea if i'm honest

[odd ember]

it will keep all movement consistent

[trim matrix]

could i maybe use the Grid then to grab a path so get a path to a location using the grid ??

[odd ember]

that's a little more complex but you can definitely grab a path and just feed each point of the path into the grid manager

before allowing AI to move to that point

you could do it as part of the new location request

[trim matrix]

hmmm thats what i'm thinking

use this request path for chase as well.

[odd ember]

yep

build patterns

[trim matrix]

have it request a location which would be player for example and return it a location to move to and repeat that

[umbral ginkgo]

Snap to target doesnt seem to exist in the player bp

[trim matrix]

that's all it's doing now for the patrol thing increments on index it was on

[odd ember]

instead of "keep relative" pick "snap to target" in location

when you attach

[trim matrix]

@odd ember what you think best Ghost smooth rotates to travel direction of always stays upright with movment ?

[odd ember]

I think that's up to you. classic is always upright, but maybe there's some flair to knowing which direction a ghost is heading

[umbral ginkgo]

@odd ember Thx man much appreciated as always

[trim matrix]

i think i prefer the rotate to face just smoother

[odd ember]

ok, you can use something RinterpTo

or FinterpTo

[trim matrix]

cmove has something already i think see how that works first

[odd ember]

sure

[trim matrix]

@odd ember if I have a button and i don't the text on the button to cause issue what would i set so it's not detected is it non hit or something ??

found it

[umbral ginkgo]

does a boolean return to false if its condition is not currently met?

I know in traditional languages you'd use an if/else statement

[odd ember]

a boolean stays whatever its set. it doesn't change unless you change it somewhere

but if it's a function of something then it can change

[umbral ginkgo]

K thats what I thought

Do you have an idea how to make some sort of condition where an actor can only be spawned once until destroyed where it can be spawned once more and so on?

[elfin brook]

Hey do someone know how to make a trapdoor that have 2x door open like this but it should be something like Squid Game that when a player go on it then maybe it go off or maybe not. hope someone that can help me with that

i know its something with box trigger or something but i dont know how to set it up

made it work like this but the trap go off when i click play

[dreamy ice]

how does one just play a single animation then return back to the anim blueprint? play animation doesnt return to the blueprint. would play montage do that?

[elfin brook]

is it a answer to me or do you ask? @dreamy ice

[dreamy ice]

im asking lol

[elfin brook]

ok sorry 😛

[dreamy ice]

Use a collision box and do an OnEventOverlap event.

[elfin brook]

@dreamy ice can you show me?

i got 2x door in one blueprint

[steel zealot]

Hey guys. I have a bullet decal spawn each time the projectile hits the wall, but I'm trying to shrink it down so its not as big when it spawns.
This is my setup for it. I also tried shrinking the PNG itself. Any thoughts?

Edit: just figured it out myself. rip

[faint pasture]

Of course it goes off when you click play, thats exactly what you are telling it to do

When do you want it to go off?

[elfin brook]

when a player go on it should be random for each game

@faint pasture

[faint pasture]

One thing at a time. You want it to go off when a player goes on it.

You want Event Begin Overlap

The Trap Actor needs a trigger volume, I'd add a box collision, set it to overlap pawn.

or Playform_glass rather

[elfin brook]

can i share screen so you can see if i do it right

[faint pasture]

Sure

[elfin brook]

should i call you or where do you want to

[faint pasture]

call is fine

[vestal plank]

hello, im trying to get the turret to shoot the first enemy with tag that come in contact with it attack range then once it die, go to the next enemy, but i dont know how to get the array's location and such, is there another way?

it point down when i have that ^ code above

[odd ember]

another way is to take a look AI and do it that way

[vestal plank]

how would i do that?

[faint pasture]

https://www.google.com/search?q=ue4+ai

behavior tree is your friend

that and perception

Is this gross and bad or ok? Sick of managing camera actors or components for our floaty camera

The actual math will be a lot more involved but that's the general shape of it

just PC drives a position and rotation around that is used as point of view

[vapid ibex]

Do you think it's a valid way to ensure there's only one instance of an actor on the level?

[faint pasture]

I wouldn't rely on that

I'm not 100% sure if there were 2 that they'd not destroy each other

Enforce it from somewhere else like Gamemode

[vapid ibex]

Hm

[dawn gazelle]

Something like this in game mode.

[vapid ibex]

Not just destroy actor?🤔

[dawn gazelle]

You can only ever call destroy actor from the actor itself.

[odd ember]

they should have thought of this in highlander

[dawn gazelle]

lol

[light token]

Hello. I have an architecture question. I have an WareHouse Actor and a Ship Pawn. Now I want those actors to have a selection glow when I select them. I could make a parent Blueprint SelectableAbstractBlueprint or something and have the warehouse inherit from that. But the Ship is a pawn so I won't be able to inherit from the SelectableActorBlueprint. How do I go from here without having duplicate code laying around?

[tight schooner]

Maybe a component. If they share a component, and your selection tool can check for & get the component from the actor, then the component can pull double duty as an interface

in addition to doing the usual stuff of giving the host actor more functionality (selection glow and other game logic related to being selected)

[light token]

Alright thanks. I'll look into making a component for that. I was also just reading about macro's but I think the component functionality is a good way to dive deeper into.

[supple bane]

How can I do something to an object that a radial force object affects?

[brazen merlin]

what seanny said. Put the outline logic in a component, slap it on an actor

[supple bane]

Ex: I shoot a rocket, how can I make the explosion(radial force) effects multiple objects

[brazen merlin]

force affects phsyics object

[supple bane]

ty

wait

[supple bane]

No I have the knockback working, I need to be able to deal damage to what It hits

SO I just need to get the object that the force hits

[brazen merlin]

hmm

you could use GetAllOverlappedActors

i believe that has a radius

SphereOverlapActors, thats the one

because its a one time thing, no need for a sphere component

try #multiplayer

[supple bane]

do you have an example, Im a bit confused

[brazen merlin]

i dont, but mr Wadstein does: https://www.youtube.com/watch?v=Wlq_Ir-Ve3Q

[rough wing]

Accessed none even when variable is not unassigned/null

Inside an animation blueprint

[brazen merlin]

well if its not valid, the you cant set the bool

use the IsValid macro

[sharp rapids]

But the variable is null

[rough wing]

It isn't

[sharp rapids]

You can see the orange execution line going through the 'Is Not Valid' node

The variable 'Sonva' is not valid

[brazen merlin]

you want this node

[rough wing]

Yes thats why i connected the not valid branch, to show it isnt valid

[sharp rapids]

His node is the same one though

[rough wing]

but the variable is assigned

[brazen merlin]

its not though

[sharp rapids]

It's just compact

[rough wing]

Didn't work

[brazen merlin]

wtf? never seen that

[sharp rapids]

You have connected both the 'Is Valid' and 'Is Not Valid' pins to the same node

It'll go ahead whether the variable was null or not

You should only use the 'Is Valid' node

[rough wing]

I only connected the not valid to show its not valid when getting a screenshot

that isnt the problem

[brazen merlin]

the way im reading that is when IsNotValid, it is trying to set the bool variable on a reference that doesnt exist

[rough wing]

Reference exists, not valid for some reason

[brazen merlin]

maybe use two setter nodes, one for is and the other for is not

[sharp rapids]

Are you sure the variable is valid?

[brazen merlin]

reference doesnt exist when not valid, but your telling it to get the bool variable

[sharp rapids]

Maybe the cast is failing?

Try a print string after the 'Cast Failed' pin

[rough wing]

I already checked

its not failing

the reference is there

[sharp rapids]

You can right click on a 'get' node and convert it to 'Validated Get' which is just a compact version of what you've suggested

[brazen merlin]

get rid of this

duplicate your Set IsAFK

and set the checkbox for one to be on and the other to be off

[sharp rapids]

But he needs to access the variable from 'Sonva' though

[brazen merlin]

and unless there is a way to determine when the player goes AFK, it would be better to update this variable on the event

if Sonva is set in this bp... and the variable to be set is in this bp...

[sharp rapids]

I suppose the error is only coming up for a split second at beginning and does not appear after that?

[brazen merlin]

it should not because bp begin play fires before hand

i have this for my anim bps

[rough wing]

I found the problem

I have a parent animBP that I derive my animBP's from

Child animBP's don't work for some reason

[brazen merlin]

this is the child anim?

[rough wing]

this is parent

[brazen merlin]

do the child animbp's have the same stuff?

you may want to print string the cast failed to see if the child anim bp is failing to "get pawn owner"

[rough wing]

No

I have it set up like this because I don't want to repeat code on different animBP's

[brazen merlin]

then... the child anim bp's dont ever call either events...?

like.. are the child abp blank or do they have the parent calls?

[rough wing]

Oh yeah Im calling

[sharp rapids]

Shouldn't Child BP's call these events anyway? We don't have control over those

Ah, we do have control,

my bad

[rough wing]

I dont think it matters though, it called by default

I called it just in case that was the problem

[brazen merlin]

where's the begin play one for the child abp?

you've got Event Begin Play > Parent: Begin Play in that child abp too?

[rough wing]

Yeah

[brazen merlin]

silly, but i must ask, do these users of the child abp have it hooked up in their bp?

[rough wing]

hooked up what?

This is the child bp

[brazen merlin]

sorry, not the anim bp, the character bp

[sonic crow]

I am trying to reference the location of my character and the location of my bomb spawn so that I can control the rotation of the spawn of the bomb explosion, how do I reference the player character in another blueprint? I am missing reference at GetActorLocation

[brazen merlin]

you can use GetPlayerCharacter

[west ferry]

is there actually no built in way to create a blueprint set from a blueprint array?

This just seems like such a common thing I can't believe it doesn't exist

am I missing something here?

[brazen merlin]

bp set?

[sharp rapids]

Can you show your character BP? Where you set the AnimBP option on a skeletal mesh

[sharp rapids]

btw What about this?

[west ferry]

yeah bp set

[brazen merlin]

ah bp set... 🙂 i dont know what that is

wait, cant that just be a for loop of the array to feed the set?

[west ferry]

yeah that is all it is but I just can't believe they don't have it

they have set to array

but they don't have the opposite - array to set

[brazen merlin]

wouldnt it be due to the limitations of the set?

like if you have a bp array of the same thing 3 times, it wouldnt translate to the set

[west ferry]

well in that case I would expect a set with one element

theres nothing incorrect about that

TSet constructor can take a TArray

I don't know why this isn't exposed in BP

[sonic crow]

How do I get the rotation between my character and bomb spawn location? I think there is something small I am forgetting here

[surreal peak]

Don't waste your energy on this

Blueprints were not meant to be a replacement to C++. They were meant to allow Designers to take over simple things, until users started making full games in them.
The support for Blueprints is, and will always be, limited.
You will find limits in every direction.

[west ferry]

I just created a macro to do it for now

[sonic crow]

ty will give it a go

[west ferry]

Still think it is weird that they don't have it

[surreal peak]

Yeah or write a quick C++ static function or so.

[brazen merlin]

actually wait, i misread your question

[surreal peak]

You are doing the math very wrong

You are normalizing a Location

Which completely changes it

You ever only need to normalize directions

Well, +-

Rotation between Character and Bomb depends on what you want that to be

[spark steppe]

find look at rotation => https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Math/Rotator/FindLookatRotation/

[surreal peak]

Angle between Character Forward and Direction from Character to Bomb?

Or just the Direction from Char to Bomb turned into a Rotation, like Ben posted

[lone pond]

hey guys i just started learning unreal engine today and i'm making a basic fps. i have experience with java. i have an event for taking damage and want to update the value for armor post calculation into a ui progress bar but aren't sure what to use

what should i connect the set part to

[spark steppe]

there are a bunch of ways to solve this, which somehow depend on your gamedesign

[surreal peak]

I mean, you have a good start, to be fair

[spark steppe]

i would add a event dispatcher to the character, like onArmorChanged, and let the widget subscribe to that event

[surreal peak]

You already got your Armor Value reduced (might want to clamp that though)

[spark steppe]

then you fire the event in your character when the armor value changes and you get the event in the UI and can update the progress bar

[lone pond]

ok

that sounds good ben

thanks

[surreal peak]

Yeah that would be the optimal solution

[spark steppe]

also the hardest one 😄

usually beginners go for polling the value from the character... which isn't good

[lone pond]

k

[sonic crow]

I am trying to use the vertex of the bomb spawn compared to the character location, to make sure the rotation of the explosion by default will always be moving in the direction the character is facing. Currently i have it working for left and right but not up and down

[lone pond]

as long as i know the algorithm and the names of the functions i should be fine

[surreal peak]

The easiest would be using the FindLookAtRotation node then

With the Bomb Spawn Location being the From, and the Character Location being the To

[spark steppe]

@lone pond
https://www.youtube.com/watch?v=ayCEqL7XFZY
https://www.youtube.com/watch?v=sEcoWGrF1Hg

[lone pond]

thanks

i'll check those out

[surreal peak]

Try, but I think it's fair to use bindings at the start and later learn one or two ways of doing it event driven

I can't f*ing type today

TRUE, not TRY brain, thx

And a typo again. brb coffee

[spark steppe]

yea, if he has some programming experience, he might get it with that 12 minutes of video, otherwise fall back to some easier solution

the earlier you understand them, the less mess will be produced 😄

[surreal peak]

One of my employees came from a Java background. They had trouble getting their head around it at the start. Sometimes having prog experience can be a curse.

But yeah, 100% better to learn it correctly from the start

But then again, the prototype I work on atm has bindings

[sonic crow]

ty you legend, made some progress enough for me to tinker 🙂

[surreal peak]

Thank Ben, he already suggested that to you :P

[sonic crow]

Thanks Ben 🙂

[spark steppe]

indeed, specially when it comes to working with blueprints, where good practice of programming doesn't always apply

[lone pond]

oh ok so if i'm understanding correctly an event dispatcher is like a messenger that tells other parts of the overall code that things happened

and from there those things can be altered

[spark steppe]

yea, but only those who subscribe to the event before

[lone pond]

how do i get lets say a ui aspect to subscribe to that event

[spark steppe]

does your character exist in the level before you add the UI?

[lone pond]

yea

i think the ui is init upon run but the character is pre-existing in the world

[spark steppe]

then you can use the begin play event of the widget. there you would get the player character, cast it to your character class, and bind the event to a custom event on the widget

[lone pond]

ok

let me try that

[spark steppe]

basically what mathew does here https://youtu.be/sEcoWGrF1Hg?t=243

[lone pond]

kk

[sonic crow]

What is the best what to get actor location at button press over the get actor location at spawn?

[lone pond]

is there a way i can use a gameinstance

cuz i think if its possible it'll be much easier for me

[surreal peak]

For what you previously asked: No

GameInstance is not meant to be used for gameplay code

[icy dragon]

I'd only use GameInstance to store values.
(e.g. for storing data to save)

[sonic crow]

perhaps Data tables can help with this

[icy dragon]

Nah, I don't really use them tbh

[lone pond]

wait you know how in java u can do //bleh to comment stuff and then uncomment it later

can i do a similar thing with code blocks

in ue4

don't wanna delete the code but wanna have it remain idle

[surreal peak]

You could just disconnect the exec (white) wire

There is also something you can enable to then "disable" selected nodes

[lone pond]

just removing the white line coming out of event should do the trick right?

[maiden wadi]

It should. Unless there's stuff after it that you want to run.

[light token]

Hello. I've got a strange problem. I spawn an actor and want it to have the same location as the other actor. Now the values in the GetActorLocation are valid and change. But the SetActorLocation fails. Why does it fail?

[timber knoll]

GetOwner is valid?

Probably not

[light token]

Yes, I printed the values of the X and Y and they change

[timber knoll]

🤔

You should still have a check for that as well tho

[light token]

Will do

[timber knoll]

Are you sure it fails tho?

Iirc the return node means it hit something when sweeping

But you don’t have sweeping on

I could be wrong tho been a while since I worked with BPs 😛

[sonic crow]

When I launch the bomb there is an x second delay. Then the bombs (mesh) actor gets destroyed and it is replaced with the explosion. Everything works well except for the fact that my code gets the actor location of my character at the time of the explosion and not the time of pressing the button to spawn the bomb or alternatively at the time of spawning the bomb in the code. I would like the explosion direction to be decided at time of launching the bomb and not at the time of the explosion so that the game play feels more natural. How does one go about this?

[light token]

Yeah the boolean returns true if the location was succesfully set

(from the hover over menu)

[timber knoll]

Aah okay good

[light token]

Yeah it's really strange to my why this fails.

I'm using this in a component, can that make a difference?

[timber knoll]

Not that I know off

[light token]

I found the error (and now there is stuff happening

The blueprint didn't had moveable enabled. It wasn't throwing any warnings. After removing the node and adding it again it showed me the warning.

Thanks for your help

[timber knoll]

Does your bomb implement it’s own logic?

The explosion etc

[timber knoll]

Aah wow that would explain haha

Good job debugging 👍

[sonic crow]

The bomb does have its own BP, some of the logic is in the TopDownCharacterBluePrint for spawning the bomb, the rest of the bomb logic is in the BasicBombBP which would include the explosion logic, however the bomb explosion logic also has its own BP with some of the logic handled there. But I dont think the BP_Explosion is needed to fix this

[timber knoll]

Hmm from what you’re saying it just sounds like the one placing the bomb is taking care of the explosion

I haven’t checked the video yet tho

[last abyss]

why don't you spawn the basic bomb bp while using the find look at rotation

[sonic crow]

Yes automatically after the bomb is spawned, it scales up and automatically gets destroyed and replaced with the explosion

[timber knoll]

Ooh wait

Exactly what I said

You’re getting the player locatioon for explosion

That is incorrect

You should use the bombs location

I assume you’re making bomberman

[sonic crow]

The rotation of the bomb does not impact the rotation of the explosion

[timber knoll]

Basically you want to spawn the bomb on the tile and let it take care of EVERYTHING else

The player shouldn’t be aware of the bomb

Then the bomb just has a delay on beginplay

After which it does the explosion

[sonic crow]

I am using find look at rotation for the bomb and the character to get the position and it works, i just want to get the rotation to be used when the bomb is launched

[sonic crow]

this already works yes

[timber knoll]

But you said it uses the player location

Which is literally what you have written, the player shouldn’t influencd the bomb after spawning

[sonic crow]

the problem is you dont want the bomb to fire in the wrong direction, i want to make use of my characters position at launching the bomb to determine the bomb explosion direction

[last abyss]

is the bomb the expanding circle?

[timber knoll]

But you will already know all this due to it’s initial rotation on spawn

[sonic crow]

I am referring to the bomb explosion in my video example. If i plant a bomb infront of me I want the explosion to move infront of me etc...

[timber knoll]

Yes exactly

On spawn you can set it’s rotation which then becomes the actors world rotation

The bomb knows it’s rotation

[sonic crow]

Rotation on spawn is a problem, I do have a mechanic to change it but that is designedto change it after the fact, I ust want the default setup to work first

[timber knoll]

Well regardless the bomb should just use it’s actor rotation

And not a find look at

You can manipulate it later without issues

On spawn, pass in the Z rotation of the player

Then in the bomb BP you do the explosion in world space

[sonic crow]

I am not sure how to make sure that the bomb always spawns infront of the character in the correct rotation if I do not do it this way by default.

[timber knoll]

If you need to rotate the bomb, you just change the Z rotation and the explosion will also have different rotation

[sonic crow]

The z rotation should work but for whatever reason as you can see in my code it is the y rotation that makes it work

The rotation of my bomb already works, it is just using the wrong time, i want to use the spawn basic bomb rotations over the spawn basic bomb explosion

long story short, only thing I need help with is pointers for one thing.When I launch the bomb there is an x second delay. Then the bombs (mesh) actor gets destroyed and it is replaced with the explosion. Everything works well except for the fact that my code gets the actor location of my character at the time of the explosion and not the time of pressing the button to spawn the bomb or alternatively at the time of spawning the bomb in the code. I would like the explosion direction to be decided at time of launching the bomb and not at the time of the explosion so that the game play feels more natural. How does one go about this?

[timber knoll]

Well that’s what I’m trying to point you towards...

[rapid robin]

Hello. Is there a way for me to know in blueprints if a controller is currently being used (rather than keyboard & mouse)?

[timber knoll]

You can have input Any Key

And then check if the key is from a gamepad

[rapid robin]

oooohh

[timber knoll]

Or the other way around (mouse moved/key is not gamepad) means you are doing keyboard input

[sonic crow]

yep i am using gamepad only for now

[timber knoll]

That was an answer on error1st 😛

[rapid robin]

Sweet, that sounds good, will try. Thanks @timber knoll

[timber knoll]

I’ll get on my pc to check your vid

this is the issue, right?

this is confusing me a bit

since it's not even shooting where the player is looking

well nvm on that, look at rotation

[sonic crow]

yes it is using the character location of the explosion spawn and not the at the time of the bomb spawn

[timber knoll]

yeah that's exactly what I was pointing towards

the bomb shouldn't be using the player character at all for the explosion

[sonic crow]

true i am trying to get that result

[timber knoll]

it should just get it's initial values

this should have the players rotation

[eternal reef]

Havent read throught he whole conversation
Cant you just spawn the bomb based on actor location + forward vector * given length
Make it so its forward direction always faces away from the player and for the further calculation use the rotation of the bomb?

[sonic crow]

yep already doing this

[timber knoll]

then on spawning the explosion

[sonic crow]

The problem with this is that the bombs rotation has not impact on the rotation of the explosion

[timber knoll]

but it should

oh wait not the bomb sphere

the spawned bomb

[sonic crow]

it would only impact the bombs position and not the bombs rotations

[timber knoll]

if you spawn the bomb facing the correct way

[sonic crow]

I mean bombs explosions rotations

[timber knoll]

and use it's world space forward vector for explosion

the explosion will go along the rotation the bomb got spawned in

meaning the explosino will have the rotation of your bombs spawn

[timber knoll]

not the players current look at towards the bomb

but why does the bomb not have impact on the explosion

[eternal reef]

Well it seems like you derive the rotation of the actor for the explosion itself and not from the bomb

[timber knoll]

the bomb causes the explosion, so it should be responsible for the explosion

[sonic crow]

The short answer is the bomb spawn location is perfect, it also determines where the bobm explosion location will be, however it has no impact on the rotation of the explosion ie) 90 degrees , 270 degrees etc...

The rotation is handeld on the Bomb explosion spawn

[timber knoll]

yes we aren't talking about location or length of the explosion

just talking about the rotation you give the explosion

that should be inherited from the bomb

[eternal reef]

Try adding an arrow component to your bomb which faces forward, make it visible ingame and see whether while waking around it does not rotate with your pawn
Then derive the rotation of that arrow for further calculation, see if that works

[sonic crow]

if i remove the infomration i added to the SpawnActor BP Basic Bomb the explosion does not respond to the rotation of the character at all

which means it just explodes upward

[last abyss]

you need to plug in the rotation of the 'basicbomb' into the spawn of the bp explosion, and on your character you need to alter the rotation of the bomb

[eternal reef]

Because BP explosion is alawys set to rotation 0 which is why it always goes up

[last abyss]

(you already changed the rotation on your character, so now just have the explosion take the bomb's rotation)

[timber knoll]

so I created a small example which uses this logic...

as you can see the projectile flies towards where i was initially looking when placing the sphere

this is literally all it does

just passing the rotation from player as initial rotation to the bomb

and it uses that to spawn the explosion after a delay

[sonic crow]

OMG this is so much cleaner than how I have been trying to do it, and it works so much better thank you

[timber knoll]

no worries 😛

[light token]

Hello. I've got a very strange problem. I have a PlayerShip that I'm making AI for. If the player hasn't selected a location the vector is at 0,0,0. A service reads out the player vector and sets it in TargetLocation. Now when I try to find out if the player set a target the ship just disappears. If I add the first branch in the execution the ship disappears... any ideas?

[timber knoll]

#gameplay-ai

you should get more assistance there 🙂

[light token]

Alright, I'll go there. Thanks

[gusty plover]

Hello, I am having a wierd replication issu. With my character I try to trigger an animation of an other actor. The animation is playing for both server and client, but cannot be seen by each other. Meaning the server cannot see client's animation, and the client cannot see server animation

[eternal reef]

Are you multicasting your animation?

[worthy carbon]

Hi i want to learn blueprints in ue4, does someone knows a good tutorial got me?

[odd ember]

if you look at the pinned posts in the channel

there's a bunch

the blueprint communication one I would consider especially important

[odd ember]

you're probably in the wrong channel. #cinematics for sequencer

[keen monolith]

apologies. I've moved to #cinematics Thanks @odd ember

[atomic salmon]

@worthy carbonhttps://learn.unrealengine.com/course/2436619

[gusty plover]

yes

[odd ember]

have you asked in #multiplayer ?

[gusty plover]

ah sorry no

[fluid lance]

Is there any way to add components via script? I'm trying to convert all attached static mesh actors to static mesh components with the same mesh/relative transform. The node "Add Component by Class" doesn't seem to add anything visible in the inspector (calling it via an editor function)

[wheat herald]

How can i spawn randomly an object on a sphere surface ?

[trim matrix]

is there a way to have a specific Level set the game mode stuff ??

so the MainMenu uses it our gamemode stuff pawn class etc

then the actual level uses the proper stuff ?

[fluid lance]

do you know the sphere's radius and origin? I would honestly do it via math (sphere's surface is delimited by (x - x0)^2 + (y-y0)^2 + (z-z0^2) = r^2 ) lol

[fluid lance]

do you mean the game mode override in the world settings tab?