archived-code-general

[simple egret]

Oh and if you don't find anything wrong, then move your question to #💻┃unity-talk as it's not a code issue

[mental rover]

filesystem access issues suggest the problem lies with the OS, or at least outside of Unity - it could be any number of things, but generally the issue boils down to the same thing: something is accessing that file, and you're not allowed to change it while it is

could be as simple a fix as restarting if some process didn't end properly - it might be drive specific, sometimes external drives don't have the same permissions by default, might be some local backup software you have running like OneDrive/Google Drive

[vague slate]

Is there a way to have game object in a scene which only exists with some #define?

or if MonoBehaviour attached is fully wrapped in define, will it be fine to leave game object as it is? (it's probably will be just empty transform)

[oblique spoke]

I believe Unity will be upset during deserialization, so I don't think this is very well supported.

Assuming it allows you to build

[vague slate]

Any alternatives to that then? I am trying to publish app to multiple stores which require different sdks

[oblique spoke]

You can separately define out methods and includes

[vague slate]

Sounds awful ngl

[oblique spoke]

Seems common to clean this up by creating separate provider objects with a shared API.

[vague slate]

well yeah, high level API is fine to use defines, but it comes to relying on different game object implementations

since some SDKs require interface on MonoB

I'll have to play around I guess and see how it works

[oblique spoke]

Whole MB/GO exclusion probably works better when paired with Resources/Addressables.

[gray mural]

What's the difference between slider and scrollbar?

[rain minnow]

in relation to what: the editor, ui, etc.?

[gray mural]

there are UI Components slider and scrollbar. What's the difference between them, if they (i think so) do the same functions actually?

we're just getting the value from them and doing whatever we want

[rain minnow]

did you read the descriptions for each component from the scripting api?

[gray mural]

no, I didn't

[rain minnow]

that would be my first stop . . .
https://docs.unity3d.com/Packages/com.unity.ugui@1.0/manual/script-Scrollbar.html

[gray mural]

oh, I see

[rain minnow]

always search first . . .

[gray mural]

so Scrollbar is used to control a big amount of text, and Slider is used for whatever else

so slider is better for me to use in my current context

[heady iris]

no, they are unrelated concepts

slider is used to provide input

you drag the handle between the minimum and maximum value

[gray mural]

yes

[rain minnow]

the link i sent explains what both do . . .

[gray mural]

is there possibility to make it from 0 to 100 using just int parameters?

so that user cannot make it 0,4323 or 57,432432

[heady iris]

you can set the snap value

[gray mural]

just ints

[gray mural]

snap value?

[heady iris]

oh wait, you don't set a snap value

you just tell it to use whole numbers

https://docs.unity3d.com/2020.1/Documentation/Manual/script-Slider.html

i was thinking of sliders in the browser :p

You can make sliders snap to increments in Unity, too, but you have to hand-roll the code a bit..

[woeful bramble]

I'm trying to add assembly definitions to an asset which doesn't have them so that their scripts can be referenced in our code. I've mostly found the right assemblies, but am having trouble finding the assembly to reference for LitGUI:

What assembly is it in?

It is not in any of these:

[swift aspen]

Are you using Rider? If so it says if you open it

[sour zealot]

hatebin isnt working for me rn idk why... Will this health script work, like the regeneration part

[swift aspen]

Might be slightly different though since I am on HDRP instead of universal

[sour zealot]

Will this work for a regeneration script... https://pastebin.com/ehRPFkEz

[vagrant blade]

Have you tried it? Nobody is going to set this entire thing up to verify it for you.

[true bramble]

why am I getting an error?

how is 0 outside of the array?

[woeful bramble]

the array could be empty

Debug.Log(points.Length);

[true bramble]

but im trying to fill it with game objects

[heady iris]

points is serialized

it probably got serialized with a length of 0

the default value is overwritten when Unity restores the serialized values

initialize the array in Awake

[true bramble]

o ok

[heady iris]

default values get assigned as the object gets constructed

deserialization happens after that

[true bramble]

its still erroring why doesn't this work

[leaden ice]

because if the length is 0 then index 0 is out of range

(if the length is 0 ANY index will be out of range)

why are you doing i < 4 in your loop instead of i < points.Length?

[true bramble]

cos its supposed to be 4 points always

I would do that anywhere else

[leaden ice]

clearly it's not 4 points though

[true bramble]

I was trying to set the length

[leaden ice]

so something is wrong with your logic

100% of the time you should use the array length

not a hardcoded value

[true bramble]

well I would be even more confused if it didnt go through the loop at all

[leaden ice]

clearly your array is not the right length here - start investigating why

[true bramble]

if it wasn't 4 I wouldn't know that the index thing was an issue

[leaden ice]

sure you would - you would find out in about 30 seconds with log statements

or by attaching a debugger

[true bramble]

hm

[heady iris]

show your code.

all of it

!code

[tawny elk]

Posting code

📃 Large Code Blocks
Large code blocks should be posted as links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/
https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code
Surround code with three backquotes. Not quotation marks.
To get C# formatting the first line should only contain cs or csharp.
Add a comment with a line number if there is an error message.
```cs
// Your code here
```
Do not share screenshots of code unless requested.

[woven matrix]

hey guys In my canvas, an 2 image is showin up as a red cross in my scene view, and it does show up any idea what this might be?

[heady iris]

that means the element has a negative width or height

[true bramble]

https://hatebin.com/vqqmiheskf

[heady iris]

did you remove the initialization in Awake?

your screenshot showed that.

[woven matrix]

who are you replaying sorry?

[heady iris]

you.

your RectTransform has a negative width or height

[true bramble]

yeah

[woven matrix]

humm ok, it does not

[true bramble]

I made a for loop to try and do it in the same function

[heady iris]

if it's set to stretch, you might have the top/left/etc. values set too high

[heady iris]

you need to initialize the array once

an array has a fixed size, which is set when it's created

[true bramble]

didnt seem to work either

[heady iris]

yes, that doesn't initialize the array

that sets elements of the array

points = new GameObject[4]; will create an array of 4 gameobjects and store it into points

[true bramble]

does this not up here?

hm

[heady iris]

this does, yes, but you deleted it from your code..

(i am referring to the second image)

[true bramble]

okay

what if I need to re add the script to the object?

[heady iris]

i do not understand your question

[woven matrix]

fixed thanks

[heady iris]

why would you need to "re-add" the component?

[true bramble]

like when does awake happen

when you add the component?

[heady iris]

it runs when the component is created and the game is running

so, for objects in the scene, it will run on startup

[true bramble]

well this script can run while the game is running

[heady iris]

for newly created components, it runs immediately after creating the component

so, setting points in Awake is a reasonable idea

i don't believe it will run if the game object is inactive, though

[true bramble]

yeah

[heady iris]

so, if you called InstantiateConnectors on a component on a disabled gameobject, Awake wouldn't have run yet, iirc

[true bramble]

idk why but it was working b4, just when I added it to a new object it stopped working

[heady iris]

you should make sure the error is coming from the object you think it is

click on the exception in the console; it should highlight the offending object

[true bramble]

it is because InstantiateConnectors runs when you click generate connectors button in its editor

[heady iris]

oh.

yes, that would, indeed, do it.

i would initialize the array in that method, then.

[true bramble]

which is what I did before but I dont understand why I cant initialize it like this

[heady iris]

because arrays have a fixed size

that code is storing four new objects in the array

it does not make room for four objects in the array

this code will throw an exception if the array's size is less than 4

and this code does nothing to change the size of the array

[true bramble]

hmmm

[heady iris]

since points is serialized, Unity will create an array that holds 0 elements by default

you'd then add and remove elements in the inspector

[true bramble]

so this would

[heady iris]

yes

[true bramble]

alr

[heady iris]

it sounds like the job of InstantiateConnectors is to set up the contents of this points array

therefore, it should also initialize the array

[true bramble]

lol that worked

thanks

Im prolly gonna get rid of those magic numbers now

[jaunty sleet]

Which do you guys think would be more performant? Using an array for a group of items that are updated every update, but the items continue to get updated after they are no longer needed because removing them from the array is a pain. Or switching to a list and having the items removed once they no longer need to be updated

[true bramble]

Use a list

[thin aurora]

In C#, accessing an index that does not exist results in an error, even if you try to null-check it. Unlike languages such as Javascript, which would return undefined. In the case of the array, you should check the length beforehand and then do a null check to have it short circuit in case it does not have the index. Alternatively, use GetElementOrDefault which will do the heavy lifting for you, and return default (which would be null) if it does not exist.

[thin aurora]

When it comes to c# performance, it really does not matter. Lists create more garbage, but are much easier to use. That garbage is negligible when it comes to performance speed, though.

[heady iris]

yeah, it's negligible

do whatever's easier to understand

not easier to write: easier to understand

[thin aurora]

You can always switch to arrays later

Or better, use a span<>

[heady iris]

programming is mostly reading other people's code

including the code you wrote two weeks ago (it is basically someone else's code now)

[heady iris]

GameObject*

💥

actually i'm not sure you can have a pointer to a managed type

[jaunty sleet]

I have never heard of a span

but I did switch to lists and it is easier to understand, thanks

because now I don't need a seperate value on every item to tell if it has been deactivated or not

I can just remove it

[heady iris]

yes

ease of writing and reading is vital

[jaunty sleet]

I've been working on my game on and off for like 8 months and I understand that now

the next one I do is going to be so much better organized from the start lol

[delicate whale]

hi, is there a way to access the burst cycles of a particle system in unity?
I have some particles that burst with a probability of 0.25 and i want to play an audio each time it does a burst

I can probably count the particles and check when the number increases but for my use it doesn't work as good

any alternatives/solutions?

[prime sinew]

https://docs.unity3d.com/ScriptReference/ParticleSystem.Burst.html

[jaunty sleet]

I've never used particles but you should check the Unity documentation and see if there are any methods / properties that will allow you to do this

[prime sinew]

https://docs.unity3d.com/ScriptReference/ParticleSystem.EmissionModule.html

[delicate whale]

I have searched the documentation and this didn't come up once

[prime sinew]

check out those documents

[delicate whale]

thanks

i will look at those right now

[prime sinew]

I googled "unity particle system burst"

[delicate whale]

Unfortunately, this is another dead end for me, there isn't anything here that will help me in my situation

I was looking for sort of a Unity Event that is invoked each time the bursts happen

[hexed pecan]

Maybe control the bursts yourself. Turn off looping and Play the particle system from code manually

Play your sounds from there too

[fluid tapir]

Hey guys, is there a way to keep one of the arm fixed to a position while the rest of the body plays an animation? For example, I want to attach one of the arm to a weapon such that they are holding the weapon (left hand on the barrel). I have used Two Bone IK for that but it seems like the arm moves away from the weapon when I walk / run.

[potent sleet]

you need to add Rig Transform to the weapon

[golden vessel]

Hey, the object I'm instantiating isn't a child of the transform I give, I don't really know why. Any ideas?

[potent sleet]

is holderInstantiate what you think it is ?

[golden vessel]

Yeah

[fluid tapir]

What would that do? I am still fairly new to the animation package 😅

[potent sleet]

how did you check it didn't work

[golden vessel]

2 sec

[golden vessel]

Nvm I changed the transform in code ><

[potent sleet]

https://docs.unity3d.com/Packages/com.unity.animation.rigging@1.0/manual/RiggingWorkflow.html
scroll to RigTransform

[golden vessel]

Thanks

[solid ledge]

What could be wrong with loading this FBX model?

        GameObject tubeModel = Resources.Load<GameObject>("Models/Connector");
        componentTypes.Add(new ComponentType("Tube", new List<Vector3>() {
            new Vector3(0, 1, 0), // Top
            new Vector3(0, -1, 0) // Bottom
        }, tubeModel));

[fluid tapir]

Okay, I was also confused about using two - two bone Ik constraints (one for the left and one for the right hand). Currently, I am just using for the left hand so that they place their hand on the barrel but is it recommended that I do not use animations for the rifle stance and just use IK to create a rifle holding pose?

What I currently have in my head is the following:

1. Every weapon will have different locations where the character will hold that weapon hence, I'll create a game object for describing the position of the left hand (and another one if I am using 2 two bone ik constraints for the right hand position).
2. I'll update the Rig's target transform (from script) to those game objects and build the rig again once the weapon drawing animation is finished.

Is this the proper way to utilize the animation rigging package?

[potent sleet]

sounds about right
keeping the IK targets on each weapon prefab is also an option

then assign the target when weapon is equip

[fluid tapir]

Yeah that's what I am doing, I am keeping the targets on the weapon since that'll make it more dynamic and easier to configure

[potent sleet]

if you want weapon to move with rig/animation then you need a rigtransform

so it will act like another bone

[fluid tapir]

But that's what I want to know, should I use 2BoneIK on both hands or only on one?

[potent sleet]

that's up to you or you original weapon posing animation

my right hand typically just has multi-aim constraint

[thick socket]

Scriptable object...I have a field for string. Is there any way to make the field expand to be the size of the string? I have naughtyattributes but didnt see anything for jt
(In inspector)

[potent sleet]

multiline?

https://docs.unity3d.com/ScriptReference/MultilineAttribute.html

[thick socket]

Yeah that...how might that actually look in code?

[potent sleet]

  [Multiline(10)]
    public string hello10Lines;
  [Multiline]
    public string hello;

[thick socket]

Oh sweet thx

[potent sleet]

or specify lines

[gray mural]

Is there any build-in method to parse number into format minutes:seconds
188 => 3:08
45 => 0:45
636 => 10:36

[thick socket]

Timespan?

[gray mural]

maybe you can give me an example of code or a link?

it should be parsed from audioSource.clip.length that is float

[sour zealot]

I’m at school and I just made it, will it work?

Will this work for a regeneration script... https://pastebin.com/ehRPFkEz

[thick socket]

I just googled seconds to minutes unity on my phone and stuff for timespan came up

[sour zealot]

I’m at school rn

[gray mural]

ok, thanks

[vagrant blade]

@sour zealot You should wait until you're actually able to test it then. This discord isn't your personal compiler.

And if it doesn't work, you can ask follow up questions.

[sour zealot]

Alr

Sorry for bothering you

[hoary basin]

Can someone explain where the transform is coming from in this instance?

My assumption is it's getting the transform of "this" i.e the object where the code is written. But I need confirmation.

[thick socket]

The object the code is on

[hoary basin]

ah thanks

[thick socket]

Aka A isnt able to call scripts in B that it inherits from?

[rotund burrow]

it is able to call it I just dont want to have "inherited functions" section in every Update() of any derived class

the ideal would be to have Update() in B with all of them, and B considering that A is overriding them, but it doesnt work

[hoary basin]

follow up: is it getting the world transform or the local transform?

🐵

[potent sleet]

world transform unless is localPosition

[hoary basin]

was the "unless its a child class" a mistake?

[thick socket]

toss both update codes here? (or first few lines of both)

[potent sleet]

it's always world position

[hoary basin]

oh its always world position. Thanks

[thick socket]

@rotund burrow
A : B
B : monobehavior
A example

protected override void Start()
    {
        hpText = GetComponentInChildren<TextMeshProUGUI>();
        base.Start();
        Shoot();
    }

B example

protected virtual void Awake()
    {
        stats = new();
        myJumps = new();
        pauseShooting = true;
    }

[thick socket]

not quite working as I was hoping

[CreateAssetMenu(menuName = "Heroes")]
public class Heroes : ScriptableObject
{
    public List<HeroInfo> heroesInfo;
    public VisualTreeAsset heroesPrefab;
}

[Serializable]
public class HeroInfo
{
    public string name;
    public AllHeroes hero;
    public Sprite head;
    [Multiline]
    public string bio;
}

ex) if you look at the bottom Void Dragon...the text goes off the screen and doesn't wrap around

[potent sleet]

looks like it working to me, what exactly is issue?

I don't think wrapping text does work in inspector

not vanilla at least

[thick socket]

I found something like this...not sure where to put it 😄

EditorStyles.label.wordWrap = true;

oh nvm that was from 8 years ago

[thick socket]

any idea how to fix that...or what people normally do when needing to put a bunch of text ingame for bio's or something

nvm

found a fix!

[TextArea(15,20)]

https://answers.unity.com/questions/1007952/how-do-i-make-text-boxes-in-the-inspector-bigger.html

[potent sleet]

Oh nice! TIL

these attributes are lit

[thick socket]

yessir

it requires scrolling at some point, but infinite box size 🙂

[swift falcon]

How do you make these components? What are they for?

[thick socket]

scriptable objects

[swift falcon]

Are they like different characters you can select in game?

[thick socket]

unlock but yeah

I use scriptable objects pretty often to store data that wont change that I need in places

[swift falcon]

Do I have to install scriptable objects or does it exist within unity components

[thick socket]

already exist...might be worth watching a youtube video about them 🙂

[swift falcon]

Ah, found a video! Thanks for letting me know 😄

[swift falcon]

Also, to get that "Name, Hero, Head, Bio" etc. Is it all done in code and it appears in the editor?

[thick socket]

@swift falcon pretty much, my code looks like this

except TextArea instead of multiline

[swift falcon]

I ask the question and the next thing in video was an answer to my question 😂

[west elk]

Hi, I'm trying to generate multiple arrays of int containing random numbers that doesn't repeat between each other. For exmpl:

Given umbers: 0-9
I want to get 5 arrays like this: [ 5 , 2 ] [ 4 , 7 ] [ 6 , 3 ] [ 8 , 0 ] [ 9 , 1 ]

Any idea on how I could approach this?

[swift falcon]

Thanks tho, I got to learn a entire new thing because of you 😄

[leaden ice]

1. put your numbers in a list
2. shuffle the list
3. iterate through the list grabbing each pair of consecutive numbers as you go

[leaden ice]

pseudocode:

List<int> numbers = { 0, 1, ..., 8, 9 };
Shuffle(numbers);
for (int i = 0; i < numbers; i += 2) {
  int[] pair = new { numbers[i], numbers[i + 1] };
  // do whatever you want with the pair
}```

[west elk]

Thanks I'll try that

[open shard]

Hi, I'm trying to set some random offset on my animations. I have the following code:

        _animator = GetComponent<Animator>();
        _animator.SetFloat("Offset", UnityEngine.Random.Range(0f, 1f));
  }

however the default state is always played without offset. Once the default state is played once it works fine and in the animator window I can see that the Offset parameter is set correctly. It is only for the first cycle of the default state that it does not work

[gray mural]

of course it does not work

your idle state plays at the beginning

when the game starts

you should consider doing another animation with Coroutine like offset if I do understand what you need to do

[neon plank]

How can I prevent the agents from pushing each other?
They are trapped in a disconnected room, and I command them to reach a point outside it.
So they moved to the point inside the room that is closest to their destination point outside it.
However, they are pushing each other in order to reach that point...
¿How can I make that agent stop push each other?

[gray mural]

you need just to stop them moving I guess?

[neon plank]

Yes

[gray mural]

so OnCollisionEnter ??

[leaden ice]

they will only push each other if they are NavMeshObstacles, no?

[neon plank]

But what if they collide in a different situation, like running to two different points?

[gray mural]

yeah, move them in other directions in order to avoid each other

[neon plank]

You can't put a NavMeshObstacle as component in a NavMeshAgent

[leaden ice]

can't you?

[neon plank]

The Agent will try to avoid itself

[gray mural]

@neon plank or do it so that the Vector3.Distance between them cannot be less than minDistance, otherwise change their moving direction

[neon plank]

How would then handle the case where two agent travel to two different directions and meet in the middle? Both wouldn't stop? I don't want that

[gray mural]

sorry for my drawing and white square

[white arrow]

guys how do i make it so when I instantiate a prefab with a script, the script finds a specific object in the scene

[neon plank]

GameObject.Find(strings)? Thought I wouldn't recommend such brittle approach

[white arrow]

ill try that for now

thanks

[gray mural]

here rotate both agents without changing move direction

last place on international drawing Olympiad💪

[neon plank]

¿And if they are trapped in a room which doesn't have a connection to reach its destination?
Agents will try to move to the point inside the room closest to the destination point. But if they start to rotate when near with other agents, they will get stuck in a loop, getting away and near the point constantly.

[gray mural]

where do they need to move actually?

[neon plank]

That is the point closest to the destination. So the 3 agents try to stay in that point.
If they start rotating they will get stuck in a loop.

[gray mural]

yeah, so you need to stop them?

[neon plank]

Yes, but how do I determine they should stop in this particular case and not in others by accident?

[gray mural]

and you shouldn't stop them, when they hit each other while running?

yes

[gray mural]

so when they stuck there, they stay in collision for quite a long time

why don't you count the time with OnCollisionStay?

[neon plank]

If the 3 agents decide to stop in order to avoid pushing all the time, and then at runtime the navmesh changes (e.g: a door is opened) so now there is a path to move. ¿How will they realize they should start moving again?

[gray mural]

weird question

just make them move again when the navmesh is changed ??

[neon plank]

What if the nav mesh changes in a form that not necessary allows the agents to move?

[gray mural]

that's possible when the direction point is +- the same as the previous one

in this case they just gonna stop moving again

otherwise I do not see any reason why they cannot move

[neon plank]

Ok, I will try

[gray mural]

good luck

[heady iris]

i would randomize their destinations a bit, so that they don't all try to occupy the same space

and then snap the destination to the navmesh with SamplePosition

although, that could wind up snapping to the wrong side

[neon plank]

What you mean with that?

[heady iris]

exactly that: use NavMesh.SamplePosition to get a position that is on the navmesh

although, iirc, agents will already just try to get as close as possible and then stop

[neon plank]

Exactly, they do that. But if two agents want to get in the same exact spot, they push each other

[heady iris]

thus the randomization

[neon plank]

Ok

[swift falcon]

maybe im thinking too easy right, because idk how important it is for them to keep remembering to go to that point. like if you can change something and want them to instaly act on it this might not work. but cant you tell them to forget about trying to move there once theyve reached it once? that way they might push eachother for like a very brief moment by which time they all been at the spot and stand still pretty close by?

[neon plank]

I guess, I can try to adapt my code to do something like that

[wide pecan]

Hey everyone. A small question. What is the best system to save a lot of data in a game(like whole classes of characters, instantiated objects etc)? As I see using Binaryformatting isn't the best way to do it.

[steady moat]

Json is an acceptable save format.

[wide pecan]

Can I store a class there, tho?

[steady moat]

https://docs.unity3d.com/2020.1/Documentation/Manual/JSONSerialization.html

[wide pecan]

that's neat. And what about saving instantiated objects?

[knotty sun]

where did you get that idea from? Binary serialization is a must for large volumes of data

[heady iris]

I am working on a survival horror game. The player has a flashlight. I want to make enemies notice when the flashlight is being shined...

• in their eyes (easy)
• on a surface they can see (uh oh)

i'm not sure how to handle that second one

[wide pecan]

I was just looking and different approaches and saw a lot of negative posts about binary formatting

[heady iris]

I guess I could do some rudimentary path tracing

shotgun rays out of the enemy's eyes, then see if any can make it back to the player

oh, yes, that's exactly what I should do

[knotty sun]

I think you are confusing that with the Binary Formatter class

[heady iris]

you probably saw something about the BinaryFormatter

[wide pecan]

probably

[heady iris]

i think it gets a slightly unfair bad rap

[knotty sun]

it does

[heady iris]

it's not as catastrophically bad as, say, Python's pickle

which you can trivially tell to run arbitrary commands

[wide pecan]

how do I use binary without binary formatter then?

[heady iris]

"binary" just means that the data is not in a text format -- i.e., something that a human being could read

[knotty sun]

there are other binary serializers, BinaryWriter springs to mind

[heady iris]

it's a lot harder to understand binary data by just looking at it

it's significantly more efficient, though

consider how there are what...62 alphanumeric characters?

you can encode 256 different values with a byte, so a format that only uses those 62 characters is going to be four times less efficient than a format that can just write anything it wants

a binary format can also directly represent data, rather than requiring a conversion step

consider storing the string "1000" vs. just storing the actual value

...although, in that case, a 4-byte int would be just as efficient as a 4-char string :p

a large number would skew that.

[wide pecan]

ok, thanks, I'll try using BinaryWriter

[wide pecan]

I have another question. I can't find how to write a class with BinaryWriter, how do I do it?

[deep fable]

In the SceneView.duringSceneGui callback of a custom editor is it possible to know which element of an array the use has currently selected?
For example in this case it should return 2 since I am selecting the Element 2 of the array

[simple egret]

Manually, that's the catch they didn't mention. You need to have a fix on what you write and in which order, as you'll have to do the exact same for BinaryReader when reading. It's a tedious task, and if disk space isn't a concern I'd just use JSON.

[heady iris]

JSON.NET (a lot of people call it Newtonsoft.Json, since that's the namespace you'll use) works pretty well.

[wide pecan]

oh, ok

I hope I won't have too much data to save so I'll stick to json

[hard sparrow]

How to render an object on canvas A above anything on canvas B, when canvas B has a higher sorting order?

(specifically for draggable objects which you want above everything else while dragging)

[latent latch]

add a new canvas component or make a dummy draggable object that is higher in the ordering

or a dummy draggable object with a canvas component

[hard sparrow]

Is it smart just to make every draggable object have it's own canvas?

[latent latch]

it's smart to break up your UI into multiple canvas

[leaden ice]

honestly when I've done draggable objects I've often just used Graphics.DrawTexture

[latent latch]

but for slots it creates problems

batching issues or something, honestly didnt read too much up on it

[sour zealot]

is there any way to toggle a bool

on and off

at the same time

not like bool = !bool

but like when I press it, it sets true, and one millisecond later it goes false again

[summer helm]

How can I change the API using a dropdown? I can’t find any tutorials or anything

[heady iris]

what are you trying to do?

[sour zealot]

im triyng to do a health regen script

this is the script

https://pastebin.com/eC60aYvj

if im doing something the hard way, please lmk

[heady iris]

well, you have like five copies of the same thing in that RegainHealth coroutine

i'd just store the last time you got hurt

if lastHurtTime + regenDelay <= Time.time, regenerate health

that's how I do stamina regen in one game

[sour zealot]

...

confusion

can you like elaborate

[heady iris]

what part of it confuses you?

oh

i wrote deltaTime

whoops

force of habit

if you got hurt at t=8 and you have a 3-second regen delay, then you're allowed to regen health once you get to t=11

if you get hurt again at t=10, you don't regen until t=13

[wide pecan]

Hey again. Json works fine for me but I'd like to know how do I store scriptable objects as a variable? Json gives me InstanceID, is it reliable to store it this way?

[heady iris]

no, it's super unreliable

[summer helm]

Can someone help

[heady iris]

i'm not sure if there's a particularly "correct" way to do that.

My current strategy is to give each scriptable object a GUID (i actually just yoink the GUID from the asset)

I use a custom json converter for the SO

the writer just grabs the GUID and writes it as a string

the reader decodes the GUID, then looks the SO up in a dictionary

the dictionary is populated by using Resources.LoadAll

[wide pecan]

damn

thanks

[sour zealot]

can u just give me code?

[heady iris]

no, I'm not going to spoonfeed the answer to you.

[sour zealot]

lol

[heady iris]

is this not clear?

[sour zealot]

can u explain more

[heady iris]

i don't know what to tell you if you just say "please explain more"

suppose the regen delay is 5 seconds

if you get hurt, you can't regen for 5 seconds after that moment

[sour zealot]

hmm

do i literally use the code u sent

and does it go in a coroutine

[heady iris]

i want you to implement this idea. it's very little code.

and no, it does not involve a coroutine.

[sour zealot]

hmmmmmmm

im still having a lot of trouble

like i dont know where to start

[heady iris]

do you know how to get the current time?

[sour zealot]

nope

[wide pecan]

Hmm. Can I just make an array class that has 2 variables: scriptableobject and integer. Then I'd just populate the array with all scriptableobjects and will be saving only the id(the integer that this scriptableobject has)? Is it inefficient ?

[heady iris]

Time.time

[sour zealot]

then what

[heady iris]

write that to a field every time you get hurt

[sour zealot]

a field?

[winged mortar]

#💻┃code-beginner

[sour zealot]

float lastHurt = Time.time;

[sour zealot]

shhhh

[heady iris]

if you do not know what a field is, then you really need to do some more reading...

[sour zealot]

i do

i was suprised why we would need a field

float lastHurt = Time.time;

is this right?

[heady iris]

because you want to remember the value

[winged mortar]

That's not a field

[heady iris]

putting it in a local variable and then immediately throwing the variable away does nothing.

[wide pecan]

what is he doing, btw?

[heady iris]

health regen

[wide pecan]

and what's the problem?

[heady iris]

get hurt, wait 3 seconds, start healing

[heady iris]

🫠

[sour zealot]

i am the problem

[heady iris]

this is what you need to do:

• when you get hurt, update the "last hurt" time
• every update, check if it's been at least 3 seconds since the "last hurt" time
• if so, add health

[wide pecan]

the most basic variant for me is using a timer that you set to 3 in OnGetHurt() and in Update it'd just be decreased every frame

it doesn't work or what?

[heady iris]

that would also work

[sour zealot]

ye but i need to interupt the regen if I get hurt

[heady iris]

yes

so you reset the timer...

[sour zealot]

yeah

[wide pecan]

it'd handle this

[vagrant blade]

@sour zealot You've been told before you should be posting in #💻┃code-beginner. Your next question goes there.

[heady iris]

I like mectorn's idea more. It is more intuitive.

[sour zealot]

okay

[heady iris]

count down to zero

[wide pecan]

OnGetHurt puts back the timer to 3 and resets regen time

[sour zealot]

#💻┃code-beginner

[vagrant blade]

Secondly, you don't need coroutines for regen. You can just track time in Update and when it surpasses an amount of time, you get health back. Reset the timer to zero and let it continue.

[wide pecan]

If you wanna be madman, use StartCoroutine, StopCoroutine

[sour zealot]

 private IEnumerator RegainHealth()
    {

        while (health < 100)
        {
            yield return new WaitForSeconds(1);
            if (damageTaken == true)
            {
                StopAllCoroutines();
                StartCoroutine(RegainHealth());
            }
            yield return new WaitForSeconds(1);
            if (damageTaken == true)
            {
                StopAllCoroutines();
                StartCoroutine(RegainHealth());
            }
            yield return new WaitForSeconds(1);
            if (damageTaken == true)
            {
                StopAllCoroutines();
                StartCoroutine(RegainHealth());
            }
            yield return new WaitForSeconds(1);
            if (damageTaken == true)
            {
                StopAllCoroutines();
                StartCoroutine(RegainHealth());
            }
            yield return new WaitForSeconds(1);
            if (damageTaken == true)
            {
                StopAllCoroutines();
                StartCoroutine(RegainHealth());
            }
            health += Time.deltaTime * regenSpeed;
            yield return null;
            if(health >= 100)
            {
                StopAllCoroutines();
            }
        }

        yield return null;
    }
``` hgeheheheheheheheeehe

that is my current one lol

[wide pecan]

dude...

[sour zealot]

lmao

im not good at health

[vagrant blade]

You can move it to #💻┃code-beginner

[sour zealot]

yes I know

[wide pecan]

I like that you stop everything, even not related to regen

[turbid surge]

Has anybody ever implemented a Game Manager with interfaces? Like this : https://hatebin.com/twjiqztmqk

I can see this being beneficial in that its more secure as you could only access certain properties/logic by what the interfaces methods expose. Also I guess its more organized and easy to tell off the cuff that a script utilized a singleton? (Even though your editor can help with that idk). Maybe good for team projects too? Or would it just be annoying/unnecessary? Thoughts?

[cold parrot]

depends on your style, if you aim for IoC and/or use DI containers and like to treat unity as a view into your POCO game logic, this makes a lot of sense

[cerulean oak]

I created a test script, but the test script doesnt seem to have access to any of my other scripts. so how am i suposed to test them xd
How can I make it find them?

[cold parrot]

even just as a way of making explicit what part of a class is used by another that holds a reference to an interface it implements can be beneficial

[thin turret]

Hi all, look for some help. Trying to do the following:

1. I need to be able to send the model created by the user to the backend
2. The be able to view and modify the model upon retrieval

However, I am not able to retrieve it. Any help would be appreciated

[void basalt]

You haven't posted any code.

nor do I think you're going to have an easy time hot loading 3d models in at runtime using binary data

[thin turret]

https://github.com/AtlasFoundation/AtlasAvatars-CharacterCreator

Using this for my final, and stuck trying to retrieve the model

[void basalt]

I don't know anything about that, sorry.

You'll probably be better off serializing each avatar's individual attributes

and then rebuilding it based on that

How are you serializing it right now?

I hope you aren't trying to send raw object binary data over the internet and constructing objects with that

[thin turret]

I was.

[void basalt]

Let me guess. Binary formatter?

That's how you get hacked. Microsoft warns against it for good reason.

Back to the point: Just pack up each avatar's individual features. Hair color, hair type, skin color, etc

then you can probably rebuild it from that.

[thin turret]

Yea I’m not optimizing for security. But the idea of serializing attributes makes a lot of sense. I just have to figure out how to do it.

Any advice of documentation you'd suggest?

[void basalt]

yep let me find it

https://learn.microsoft.com/en-us/dotnet/api/system.io.binarywriter?view=net-8.0

You can safely write and read binary data with this. It lets you serialize all primitive types

If this is too advanced, just use json

[thin turret]

Super helpful

Thank you so much

[cold parrot]

binary writer only does primitive types (thats why its safe), for advanced types you need to supply your own serialization/marshalling and security checks

[weary depot]

peeps

anyone here familiar with the render streaming package?

[potent sleet]

no what's that

[weary depot]

welp I fixed my issue, but it's a package for streaming unity content on the web via webRTC

[potent sleet]

for like presentations or something?

ah I see
https://youtu.be/c2pp_T5xzeU

[weary depot]

yes it's pretty cool but a bit janky, I had issues with trying to read my mouse via browser but alles gut

[winged sphinx]

so I'm having an ienumerator problem. when I do this:

yield return StartCoroutine(cardAnimation());
print("it reaches here just fine");
removeCard();
updateHand();
placeCardOnTable();

but I want to remove the card and update hand before the coroutine. but when I do this:

removeCard();
updateHand();
yield return StartCoroutine(cardAnimation());
print("for some reason nothing after the coroutine runs now");
placeCardOnTable();

[potent sleet]

!code

[tawny elk]

Posting code

📃 Large Code Blocks
Large code blocks should be posted as links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/
https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code
Surround code with three backquotes. Not quotation marks.
To get C# formatting the first line should only contain cs or csharp.
Add a comment with a line number if there is an error message.
```cs
// Your code here
```
Do not share screenshots of code unless requested.

[woeful slate]

What's the best way to sync up Animators? I have one for hair, body, etc

[potent sleet]

are you destroying or disabling the object this script is on?

[winged sphinx]

no.

[potent sleet]

removeCard();
what does this do?

[winged sphinx]

removeCard(); removes the card reference from the Hand
updateHand(); does destroy and remake the card objects, but this is happening in the game controller.

[prime sinew]

maybe ask in #🏃┃animation

[prime sinew]

do you have any errors

[winged sphinx]

no exceptions thrown.

[potent sleet]

oh this script on the card object?

[winged sphinx]

no this script is in the game controller.

[potent sleet]

do you change timescale at all ?

[winged sphinx]

no

[potent sleet]

no print either after yield return ?

[winged sphinx]

only in the second case, yeah.

[cosmic rain]

That would mean that either the current coroutine is being stopped (for example if the object that runs it is disabled or destroyed), or that the second coroutine does not return control to this one(either stuck in a loop, stopped or waiting for another coroutine).

[winged sphinx]

cardAnimation(); creates an animation object (from an animation controller) then yield return new waitForSeconds(that object's lifetime)

[cosmic rain]

Add a log after that yield. Also print the life time before the yield.

[winged sphinx]

in this order, it reaches all three break points.

in this order, it reaches only the first two break points.

[cosmic rain]

What's coroutine here?

It looks like you didn't read my message properly. I was referring to the inner coroutine.

[winged sphinx]

the only yield in the second enumerator is a waitforseconds, which according to break points it gets past, but doesn't return to the first. and only in the second order.

[cosmic rain]

Add an OnDisable to both the classes that run the coroutines and print something meaningful there.

[winged sphinx]

I will eat something comically inedible if either of these objects are being disabled.

it made me nervous for a second but no, it only gets there when I stop the game.

[winged sphinx]

Ok so I was doing a workaround where I would just disable the sprite on the card display. and decided just to try disabling the gameobject, and apparently that also caused the issue. RemoveCard destroys that gameobject, but that's a void and otherwise it isn't where either enumerator is running...

...but yeah disabling the sprite before the card animation is at least close enough to what I need to do that I'll just give up and go with that.

[lyric panther]

trying to do a thing where i have two rigidbodies, i want it so that if i move rb1, it moves rb2, and vice versa. and then when i block one from moving the other one stops moving

[prime sinew]

could probably just set rb1's velocity to rb2's velocity and vice versa

[ashen yoke]

cyclical dependency

there are spring joints and other joints

[lyric panther]

that'd make some really weird behaviors

[worldly hull]

i have a coroutine where it needs to return a list of data classes, the coroutine is done and without errors, however, i cant do it like this right?

    private async void updateHistorical(List<UserActivity> activities)
    {
        completedQuests = StartCoroutine(RetrieveCompletedQuestFromActivity(activities));

        HandleCompletedQuest(completedQuests);
        ....irrelavant codes...```

[lyric panther]

basically it's a set of two sliding doors, if you open one the other one opens too in the other direction.

[prime sinew]

how are you opening them. to be fair, you were pretty vague

[worldly hull]

does coroutine has .Result or something like that?

[ashen yoke]

time to use UniTask

[worldly hull]

whats that new stuff

[ashen yoke]

https://github.com/Cysharp/UniTask

[prime sinew]

can you only open one, so it's either one?

and is the direction fixed

[ashen yoke]

 // You can await IEnumerator coroutines
    await FooCoroutineEnumerator();

[prime sinew]

so you can select either door, and both doors just open?

[lyric panther]

the direction is fixed, i'm just applying a pull force to a set point in front of the player, i've got a universal script for moveable objects.

it's done via rigidbodies

[prime sinew]

so you open the door with physics

[lyric panther]

yeah

[prime sinew]

you could use inverselerp?

[ashen yoke]

@worldly hull with unitask using coroutines becomes pointless

[prime sinew]

some sort of lerp, you check the progress of one door, then you move the other door

[ashen yoke]

in any case since that is not what you asked

[worldly hull]

welp i need to inform and discuss with my team first

lol i cant just add random packages into my team project 💩

[lyric panther]

the problem is that I need both doors to respond with physics, if i make one door just follow the other door then one door wouldn't react with physics

[worldly hull]

but i will check it out

[ashen yoke]

im not aware of any mechanism apart from class member field that could inform the coroutine state

    public sealed class Coroutine : YieldInstruction
    {
        ~Coroutine();
    }

yay

minimalism

[ashen yoke]

i understand, there is also alternative - MEC from asset store

both resolve most coroutine issues

havent used unity coroutines in years outside of editor coroutines package

[lyric panther]

this seems to work

[ashen yoke]

@worldly hull well actually if you pass a callback to the coroutine

you would while it

[worldly hull]

dw , even if i cant install this, i can still use it in my own project 👍

[ashen yoke]

or some general token object

[worldly hull]

i thought of a stupid way but still be able to do it

[ashen yoke]

class CoroutineCompletionHandle
{
    public bool Done {get;set}
}

IEnumerator DoStuff(CoroutineCompletionHandle handle)
{
    // does stuff
    handle.Done = true;
}

[worldly hull]

Task.Delay(500);```
give me my kekw emoji

[ashen yoke]

ill give you a raise

also .net tasks generate 0.5kb each afaik

[worldly hull]

idk how u feel about this, but our ways to spawn all in game objects are using addressables asyncs

team project ofc, not in my own project

[ashen yoke]

dont feel because practically zero experience with adressables

[worldly hull]

all the interactables and NPCs and parts of the UI will be spawned using this function

and in the function of calling this coroutine, the function is actually an async function, cuz it needs to spawn something out

so i can still use Task.Delay there

[ashen yoke]

https://docs.unity3d.com/Packages/com.unity.addressables@0.7/manual/AddressableAssetsAsyncOperationHandle.html

[worldly hull]

yes , we use this kind of method to spawn stuff

[lyric panther]

nevermind this doesn't work either

[ashen yoke]

can use similar method to call coroutines globally

[worldly hull]

welp i can just change the coroutines to void

[sudden hinge]

https://forum.unity.com/threads/cannot-start-coroutine-within-method-called-by-unityevent-if-singleton-is-used-ui-button.1435414/
If someone knows a fix for this let me know.
It seems to be impossible to start a coroutine from a singleton script using Unity Events

[worldly hull]

or just void function

wait

[ashen yoke]

SongManager.StartSong SongManager is a type name?

[worldly hull]

this is the call

    private async void updateHistorical(List<UserActivity> activities)
    {
        ProcessCompletedQuestFromActivity(activities);```

this is the function
```cs
    private void ProcessCompletedQuestFromActivity(List<UserActivity> activities)
    {
        List<string> completedQuestid = new List<string>();
        List<UserActivity> completedQuestActivity = activities.Where(x => x.type == "QuestComplete").ToList();
        foreach (UserActivity activity in completedQuestActivity)
        {
            completedQuestid.Add(activity.refId);
        }

        completedQuests = QuestManager.instance.questLog.questsData.Where(x => completedQuestid.Contains(x._id)).ToList();
        HandleCompletedQuest(completedQuests);
    }```

welp it has no errors anyway lol

[quartz folio]

This sounds like it has nothing to do with UnityEvents, Singletons, or Coroutines and everything to do with using Invoke

[sudden hinge]

Invoke isn't used. Maybe somewhere under the hood of UnityEvents or Coroutines?

Oh wait a second

The tools I use use invoke

Thanks!

[ashen yoke]

Im reading all assemblies, getting all types, finding exact match by string UnityEngine.Light, using the found type in GetComponent(Type type) and it doesnt find the component

my guess is that im getting something from legacy assemblies instead, meaning i have to skip it when gathering types

is there any read on which are actual final dlls?

hm but the weird thing is im getting them all already and only finding one UnityEngine.Light type, id get several if there were duplicates right? how would that even work

ah no nevermind i xy'ed myself

[quartz folio]

Why on earth would you search assemblies for strings to do this

[ashen yoke]

user input

[pallid cradle]

Is it possible to call ParticleSystemRenderer.BakeMesh on the job system?

[winged mortar]

Looks like you were looking for .Select() it allows you to do

List<string> completedQuestId = activities.Where(x.type == "QuestComplete").Select(x => x.refId).ToList()

[worldly hull]

oh this is way too long ago lol

i already get everything done, thx 👍

[winged mortar]

for coroutines we just wrote a simple callback function

gotcha

[opal cargo]

Hey guys, trying to implement some Collide and Slide stuff into a character controller, has someone a nice ressource for this?

[slim condor]

Saving the texture of the MeshRenderer

[wide pecan]

Hey everyone. I don't quite get how do I use Bson in new versions of unity(editor says it's obsolete and has a separate package but I can't find any new solutions or this package).

            SaveData data = new SaveData();
            SavePlayers(data);

            using (var stream = new FileStream(CommonPath, FileMode.Create))
            using (var writer = new BsonWriter(stream))
            {
                JsonSerializer.CreateDefault(null).Serialize(writer, data);
            }

I found this code that should save data as binary but it saves it as regular json with some weird characters and the file even weights more than a regular json save file.

[static lantern]

While we're troubleshooting Json stuff, does anyone know why it's returning "Null" for name? Am I using the deserializer incorrectly?

{
  "name": "Sebastian",
  "Characters": {}
}

StreamReader sr = new StreamReader(path);
string json = sr.ReadToEnd();
sr.Close();

wd = JsonConvert.DeserializeObject<WorldData>(json);

Debug.Log(wd.name);

[static matrix]

is there a way for a NavMeshAgent to automatically change the mesh/surface it is baked on without having to place hundreds of bridges at the ends of all my chunks?

[ashen yoke]

without seeing the class itself its hard to tell

[static lantern]

Standby

public struct WorldData
{
    public string name { get; private set; }
    public Dictionary<string, CharacterData> Characters { get; private set; }
}

[onyx marlin]

hello everyone im new to c# and i need some help with my project , i want to make an app in unity that pulls notifications(like whatsapp ,messages etc. ) from an android phone and send it to my arduino through a bluetooth module , i have done the bluetooth part but i dont have any idea how to recive notifications using code.Please mention or dm me if you can help ,thank you in advance.

[ashen yoke]

is the dictionary also null? i dont see any attributes

is it opt in/out?

[static lantern]

Uh... let me try to fill it with some default data and see

[static matrix]

any help with my nav issue or do I just have to place the bridges everywhere

[ashen yoke]

you mentioned chunks how large is the world?

navmesh already has tiling built in which optimizes large worlds

[static matrix]

procedural world

[ashen yoke]

you dont need to keep separate navmehses

[static matrix]

its procedural, so i do

[ashen yoke]

you plan to simulate the whole world at all times?

[static matrix]

no

[ashen yoke]

then usual approach to this is to update the mesh at runtime around the player

well, one of the approaches

[static matrix]

that will work?

[ashen yoke]

yes with NavMeshComponents

[static matrix]

each chunk has its own surface

the problem is monsters stop at the edge of chunks because they dont switch navmeshes

[ashen yoke]

i understand the problem, and i dont have an immidiate solution, apart from maybe hacking around with the agent by disabling and pushing to another mesh then enabling

problem is path itself

[static matrix]

rn my solution is placing hundreds of offmesh links at the edge of every chunk, which causes the creatures to be jittery near the edges and takes a ton of time to set up

ill see if I can try and bake at runtime maybe

[static lantern]

Seemed to have resolved it. I think it took issue with the private setters

[ashen yoke]

you added attributes?

[static lantern]

{
  "name": "Seb",
  "Characters": {
    "Sebastian": {
      "id": "0",
      "name": "Sebastian",
      "credits": 10000
    }
  }
}

[ashen yoke]

thats the json itself

youre using newtonsoft json?

[static lantern]

Yes

[ashen yoke]

https://www.newtonsoft.com/json/help/html/SerializationAttributes.htm

[static lantern]

Oh, I don't have opt-in

That constructor should help, though

[ashen yoke]

By default a type's properties are serialized in opt-out mode. What that means is that all public fields and properties with getters are automatically serialized to JSON, and fields and properties that shouldn't be serialized are opted-out by placing JsonIgnoreAttribute on them. To serialize private members, the JsonPropertyAttribute can be placed on private fields and properties.

[static lantern]

ok

Thank you for your help

[static matrix]

theres probably a setting somewhere that lets agents cross meshes

[ashen yoke]

cross it maybe, but how will you compute a direct path

how large is the world again?

[static matrix]

idk as long as it doesn't stop at the edge of the chunk and stand there awkwardly

[ashen yoke]

infinite?

[static matrix]

at any one given moment? Because it is infinitely generated, just not at the same time

[ashen yoke]

navmesh tiling allows you to rebake an arbitrary area at runtime

[static matrix]

ok let me look at that

[ashen yoke]

so if you opt for player centered mesh, you can bake only those areas that are in the bounds of the loaded chunks

this means you will have to periodically recenter and rebake the whole thing starting from player chunk outwards

but even given the large size of it you are still only computing loaded chunks

i assume you already do world shift

[static matrix]

wdym world shift

I might im just not familiar with the term

[ashen yoke]

origin shift

[static matrix]

yes

the world generates from the player

or the generation gets the players position and generates the world around it

[ashen yoke]

so each time you shift the world you can do the big rebake

and when new chunks encountered you do only them

[static matrix]

so what would I attach the navmeshsurface to?

[ashen yoke]

i have a feeling you dont do origin shift

[static matrix]

No i think i do

[ashen yoke]

you have to shift the whole world towards zero once the player reaches around 2-3k units

[static matrix]

 void GenerateFromCenter()
    {
        for (int x = -2; x < 3; x++)
        {
            for (int z = -2; z < 3; z++)
            {
                bool Occupied = false;
                foreach (Chunk c in Chunks)
                {
                    if(c.coords.X == x+Center.X && c.coords.Z == z + Center.Z)
                    {
                        Occupied = true;
                    }
                }
                if (!Occupied)
                {
                    GenerateChunk(new Coords(x + Center.X, 0, z + Center.Z));
                }
               


            }
        }
       
    }
    //Check if the player is far enough away to spawn new chunks
    void CheckDespawn()
    {
        foreach (Chunk c in Chunks)
        {
            if (DifferenceInCoords(PlayerIn.coords, c.coords) > 3)
            {
                if (c.gameObject != null)
                {
                    Destroy(c.gameObject);
                }
              
            }
        }
    }

ohhhhhh
no i dont do that

heres the generative part of the generation script

[ashen yoke]

when you get to the shift, just incorporate the rebake into it, and youre good

[static matrix]

ok so
which object is doing the baking

[ashen yoke]

some static class in the api

[static matrix]

so do I stop attatching a navmeshsurface to each chunk?

[ashen yoke]

yes it just has to be attached to the world transform

rather the shift transform

[static matrix]

woah

[ashen yoke]

no

it just has to be at 0

all the time

lol

[static matrix]

uh
should all the chunks be children?

[ashen yoke]

your player will essentially only ever move around the zeroes, while the rest of the world shifts under him

how you implement it i dont know, the parenting will probably be worse than just iterating over chunk roots

because any parenting incurs transform hierarchy update cost

[static matrix]

alright ill figure things out

[young hamlet]

Hi

I got a problem of this and I don’t know the reason😳 anyone can help?

[ashen yoke]

i advice to just keep track of chunks and agents and move them by iteration

that will be much faster

[young hamlet]

I can just cut the object in the original counter, the duplicated one doesn’t work😳

If I just put an object in the duplicated counter, nothing works

[ashen yoke]

@static matrix https://github.com/Unity-Technologies/NavMeshComponents/blob/41d24c4639f3196905f547cb0148e4f44c2d2b7d/Assets/NavMeshComponents/Scripts/NavMeshSurface.cs#LL184C61-L184C62

you provide the bounds with NavMeshData struct

yikes its not struct

yikes its not even the correct one

UnityEngine.AI.NavMeshBuilder.UpdateNavMeshData() there we go

[static matrix]

ok ill look there

[ashen yoke]

theres an async version as well

[swift falcon]

Apparently block keeps turning out to be null and giving me an error. Why?
and I have checked prefab, it's not null.

https://gdl.space/lohubejami.cs

Exact error:

NullReferenceException: Object reference not set to an instance of an object
TerrainGeneration+<LoadWorldCoroutine>d__80.MoveNext () (at Assets/TerrainGeneration.cs:1375)

Line 1375: block.transform.parent = this.transform;

[static matrix]

hmmm what do I use for the data param for updatenavmesh

[ashen yoke]

probably just grab it from existing navmesh

re-feed it

[static matrix]

yeh

whats the async one called

[ashen yoke]

click on NavMeshBuilder

press F12

[prime sinew]

where do you assign block nvm

[leaden ice]

what does SpawnObject do?

[static matrix]

nope

[ashen yoke]

then right click -> go to definition or something

[static matrix]

he just sits there at the chunk endge

ok wait

what if

big brain time

I attatch an offmesh link to the front of the monster

[ashen yoke]

all that i was suggesting was based on the idea of a single large navmesh

[static matrix]

ohhhhhh

[ashen yoke]

so that method would update an area of it

[static matrix]

lots of small meshes

yeah

ok

ill try that

yoooooooooooooooooooooooooo
I got it fixed
I just need a bridge in front of the monster

[wide pecan]

Hey again. Can I still use Bson with Json.Net? It says it's obsolete and I don't think I quite understand how it works

[heady iris]

No idea.

[slate quest]

sup guys, does someone know how I can make the missile (only move forward) to start with same rotation and direction the player is?

I've tried:

void Start()
{
  transform.rotation = player.transform.rotation
}

void Update()
{
  transform.Translate(transform.forward * speed * Time.deltaTime);

}

[leaden ice]

transform.Translate(transform.forward * speed * Time.deltaTime); is wrong, since Translate works in local space.
transform.Translate(Vector3.forward * speed * Time.deltaTime); would work

[slate quest]

hmm let me check

[leaden ice]

that is assuming you don't already have a problem in your Start function

[slate quest]

but Vector3.forward isnt a fixed global coordinate?

[leaden ice]

Translate works in local space

so itd be "forward in local space"

which is what you want

the object's forward direction

Vector3.forward itself is not implicitly belonging to any coordinate space.

[slate quest]

yep that's why I dont understand, because Vector3(0,0,1) should move in the global Z

it worked

thanks

[wide pecan]

hmm, so I guess Json isn't that good for storing large quantities of data(like positions and variables of all items dropped in the game), is it?

[slate quest]

but still doesnt understand why it should be a fixed value xD

[heady iris]

I would use a more efficient encoding for massive amounts of data, yeah

but then again

i wouldn't really worry about it until i wound up with multiple megabytes of data

[wide pecan]

ok, thanks

[fallow palm]

I’m currently trying to make my player’s position persist between scene transitions. I want it so that if I enter a different scene and then go back into the previous scene my player is in the same place. I have this script that I use to transition between scenes: https://gdl.space/oyunilazef.cs. The purpose of this script is to allow the last visited scene to be loaded. I also implemented two methods in my player script to save the player position into PlayerPrefs: https://gdl.space/ifebihiwuf.cs. The issue with my code in the SceneChanger script is that the part after the scene is loaded in the LoadScene method does not run after the scene is loaded, which is what I want it to do. I was doing some research and found out that Unity has an event called SceneManager.sceneLoaded that is called when a scene is loaded: https://docs.unity3d.com/ScriptReference/SceneManagement.SceneManager-sceneLoaded.html. However, I have never used events in Unity before and I am not sure how to go about implementing logic to load the player’s position when a scene is loaded. Is anyone able to help me out?

[mossy minnow]

hey, silly issue. im trying to initialise a material as green, and the material itself is green, but when i put it onto a line it just displays as white

when i change the colour manually, it works fine, the only issue when initializing the lines with code

        gridMat.color = new Color(128, 255, 128);```
        ```line.material = gridMat;```

[leaden ice]

new Color(128, 255, 128) this is white

Color uses 0-1 values

[mossy minnow]

ohhhh ok

[leaden ice]

You can also use Color32 which uses 0-255

[mossy minnow]

perfect, thanks!

[hollow hound]

Is it possible to make a prefab based on other prefab?
I have prefab Child without any links to other prefabs. I want to create empty Parent prefab add make it base prefab for Child, then apply some of the components of Child to Parent.

[leaden ice]

yes they're called prefab variants

https://docs.unity3d.com/Manual/PrefabVariants.html

[hollow hound]

I know what prefab variant is.
I'm asking how to change non-variant prefab to variant prefab and set up base prefab for it, after I already have child prefab.

[leaden ice]

Well I know in newer versions of Unity there's a way to re-establish a prefab link from an object in a scene

not sure if there's a similar mechanism for prefab -> variant

[fleet furnace]

Well... you "can" go the manual route and just change the YAML yourself.
I know we were forced to do that a few times a few years back at work.

[thick socket]

would it not just be easier to have the player "Don'tDestroyOnLoad"?

thus the position stays the same

[fallow palm]

That might be a good idea, I might try that

[thick socket]

I probably have to much stuff on "Don'tDestroyOnLoad" 😄

[wide pecan]

How can I stop Json from adding junk to my floats?

[wide terrace]

what junk?

[wide pecan]

-8.67 turns into -8.670000076293946 in json

[hollow hound]

Do you have some guides on how to do that?

[leaden ice]

This is just a consequence of floating point binary representation.
8.67 cannot be stored accurately in a binary floating point number.

Is there a reason it matters for you?

It has nothing to do with JSON

[wide pecan]

I mean, for large quantities of data this can take up a lot of space, can't it?

[leaden ice]

no

[wide pecan]

ok then

[leaden ice]

floats take up 32 bits of space no matter what

[wide pecan]

that's neat

[leaden ice]

The number 1 takes the same amount of space as this

[wide pecan]

thanks

[fleet furnace]

Well. It can. It the json it might be problematic.

[hexed pecan]

Isn't JSon stored in strings though

[leaden ice]

yes

when the json string gets parsed into a float you get this

[leaden ice]

true in json it takes more space

didn't realize you were saying that

[wide pecan]

but it's still a string while stored on a drive

[leaden ice]

Yes as json - if you care you can format the number to a limited number of digits

[fleet furnace]

Ou. I mean. If your meta files are stored as text. Its not that problematic.
You can probably reverse engineer it.
Its just about assigning an ID to some field eg... parent_prefab_id or whatever.

https://blog.unity.com/engine-platform/understanding-unitys-serialization-language-yaml

But this might get you started.

[wide pecan]

but how can I do it, I give a limited number of digits and it extends it

[fleet furnace]

I believe the decimal data type is what you are looking for.
Its just about seeing if your json serializer understands it properly.

[hexed pecan]

Do you think storing a decimal would result in shorter numeric strings?

I don't see how it would

Or would it? Less imprecision?

[fleet furnace]

Well. Its gonna take up more bytes in memory but it will be shorter in the json. (or at least it will get rid of the imprecision)

[slim condor]

Problem reading .obj file

[wide terrace]

@wide pecan are you using Newtonsoft.JSON?

[wide pecan]

Now I'm using JsonUtility but can switch to Newtonsoft

[hexed pecan]

Yeah that makes sense. Not sure if I have seen a decimal in a json, does it look the same as a float?

I have some json files that could probably reduce their file size by 30% by doing something like this

[wide terrace]

It looks like Newtonsoft might have an attribute which can be used to specify serializers, and one such serializer for this purpose:

[JsonConverter(typeof(RoundingJsonConverter), 4)]
public float myFloat;

But I've not tested it

Edit: possibly only on properties - unclear https://www.newtonsoft.com/json/help/html/JsonConverterAttributeProperty.htm
Edit Edit: looks like you may need to implement the actual converter yourself still :/

[fleet furnace]

I mean. Introducing custom serializers/deserializers is way too much work for a 30% size reduction.
There have to be lower handing fruits for optimization like that 😅

Now if you were sending vertex data as json or something crazy like that.
With milions of vertexes. Then sure I guess.

[hexed pecan]

See, it depends on the case

Damn I keep forgetting that optimization is a curse word here

[fleet furnace]

But serialization/deserialization should happen outside of gameplay. Hidden by a black screen.

[hexed pecan]

The answer is always something like "its not worth it" without any context

[fleet furnace]

I mean. Damn. I just remembered the story about GTA5 loading being cut by like 60% by a guy optimizing their JSON 😅

[hexed pecan]

I think ive heard of that, wasnt it a random guy?

[fleet furnace]

Yeah. A "modder" that got angry at how long it took I belive 😅

[hexed pecan]

That dude went vigiliant lol

[fallow palm]

Ok so I added DontDestroyOnLoad to my player's start method but now when I go back into the scene with my player there are two players. How do I fix that?

[wide pecan]

oh, wait, Newtonsoft handles vector3 values much worse, now it adds Magnitude and sqrMagnitude parameters and also normalized values, this takes up a lot of space

[hexed pecan]

Can you tell it to not serialize properties

Because thats what it is doing

[swift aspen]

Only if you make a custom serializer

[hexed pecan]

Lol, Newtonsoft isnt that superior after all is it?

[sage latch]

What's the best way to make a system where enemies not in view are disabled? Stick a trigger on the camera and run something like GetComponent<IProximityHandler> on every colliding object? Maybe OnBecameVisible?

[hexed pecan]

OnBecameVisible is my first thought

[thick socket]

there are a bunch of checks and complicated stuff you can do to try and fix it

what I do instead is this...

[sage latch]

What if I want to add some padding to make it more natural?

[thick socket]

using UnityEngine;

public static class BootStrapper
{
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("Systems")));
}

named BootStrapper.cs

[hexed pecan]

If you use OnBecameVisible then the only "adjustments" you can make are the bounds of the renderer

[sage latch]

I'll try it

[thick socket]

inside my resources folder is an object with the things I want to always be "Don'tDestroyOnLoad"

idk how the script works exactly...but it isn't on anything but it initializes that only once when the game starts

[fallow palm]

So I don't have to attach this to anything? Do I need to call anything in my DontDestroyOnLoad objects?

[thick socket]

nupe

that script just runs once by itself when game starts and puts the "Systems" object that is in Resources folder into Don'tDestroyOnLoad

I named it systems....doesn't have to be called that

code name and object name need to be the same tho

[fallow palm]

How do you create that object?

[thick socket]

make object in scene

drag into resources folder

aka make a "prefab"

[fallow palm]

And that folder should have prefabs of all the other DontDestroyOnLoad objects as well as this script?

[wide pecan]

Ok, I've tested and having 500 saved items only takes up 35 kb, so rounding their position isn't that necessary here

[sage latch]

Does OnBecameVisible get called on disabled behaviours?

[thick socket]

I have 1 DDOL object that has children on it that I don't want destroyed

if you didn't just want 1 main object with others as children you would need to drag all prefabs into the resources folder

public static class BootStrapper
{
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("Systems")));
public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("Player")));
public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("gamemangera")));
public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("etc")));
}```

[hexed pecan]

Not sure, docs dont say anything, try it out? 🤔

[thick socket]

easier to just put all DDOL on one prefab and call it once imo

[fallow palm]

Yeah the other way looked simpler

I'll try it out

[hexed pecan]

@sage latch Just a FYI there's a bool isVisible also if you ever need to poll it instead of the OnBecame messages
https://docs.unity3d.com/ScriptReference/Renderer-isVisible.html

[sage latch]

Yeah I saw that, but it does require a renderer which one of the objects I want this for does not have, makes me wonder if the OnBecame messages also need a renderer to work.

[hexed pecan]

Ah, well yes you do need a renderer

I'm thinking maybe you can use a "dummy" renderer that isn't really visible but gets detected by camera?

Basically just use the bounds of it

[sage latch]

Yeah

That way I can add padding as well

[hexed pecan]

Yep, without messing with the bounds of the visual

Sounds reasonable

@sage latch Lemme know if it works

[sage latch]

Doesn't work on disabled ones :/

Guess I'll have to disable the components one by one

[hexed pecan]

Maybe have one script that is always enabled, and it listens to OnBecameVisible/Invisible

[sage latch]

yes

[hexed pecan]

And that script would have a List<Behaviour> or something
And then enable/disable those behaviours accordingly

[sage latch]

Well, having it on a separate script was the plan all along Composition > inheritance 💪

[craggy quartz]

Osmal

[wide pecan]

in the end I decided to just store position as vector3 with all 3 values being floats multiplied by 1000 and rounded, this way json doesn't add any junk because now they are just like integers. When instantiating, I just divide the position by 1000

[fallow palm]

I added the script to the root of my Assets folder. The "Systems" prefab is there as well. I am getting an error. Here is the error and my prefab.

[hollow hound]

The child prefab has link to the base, yes. But I can't just change it because child prefab stores only modifications of prefab. So i need redefine all components of my prefab and still somehow connect it to this "modifications" structure.
Doesn't look like "not problematic" to me, it's the same rebuilding of all prefabs as with manual recreation using ui.
Or am I missing something?

[hexed pecan]

Sometimes these hacky workarounds are the way to go 😄

[wide pecan]

and from 190kb 2000 items now take up 127kb

[thick socket]

screenshot of full code and Systems location

[fallow palm]

using UnityEngine;

public static class BootStrapper
{
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    public static void Execute() => Object.DontDestroyOnLoad(Object.Instantiate(Resources.Load("Systems")));```

Screenshot is coming

[hexed pecan]

Hehe thats pretty much the 30% that I approximated

[thick socket]

Systems isn't in a "Resources" folder

[fallow palm]

Ok, I'll try that

Ok it worked but it created two players. I deleted the Systems from my scene and that created one player but it broke my Cinemachine follow camera since it references the player object

[thick socket]

you can either put the camera inside your dontdestroyonload also

or code on camera to find player

[fallow palm]

Well another problem I have is that there are some scenes where my player isn't present, i.e. menu and UI scenes. What should I do about that?

[thick socket]

other solution...don't have player in don'tdestroyonload, and just store its previous position in a gamemanager before moving to next scene so you can give it the old position in new scene

[thick socket]

I just disable the player during that

if you change player looks/armor/weapons etc...its better to be dontdestroyonload imo

[fallow palm]

Ok. I'm going to try a few things then

[thick socket]

(code wise its not that hard to find player in scenes 👌 )

[rotund burrow]

if i have 1 method that is supposed to be abstract, should i make entire class abstract or just make method virtual?

[simple egret]

You can't have abstract members in a class that's not abstract, so that option is out

[rotund burrow]

i know

so leave method abstract and just add abstract before class name, or make method virtual

[simple egret]

Okay, so ask yourself the following question:

Does it make sense to have instances of [your class]? Or is it intended to only instantiate child classes of [your class]?

[rotund burrow]

it's the second

[simple egret]

Then, mark the base abstract

[cobalt wave]

private void OnCollisionEnter(Collision collision)
    {
        ContactPoint[] contactPoints = new ContactPoint[collision.contactCount];
        int contactCount = collision.GetContacts(contactPoints);

        Vector3 avgNormal = Vector3.zero;
        foreach (ContactPoint cp in contactPoints)
            avgNormal += cp.normal;
        avgNormal /= contactCount;
        
        if (avgNormal.y > 0.95f) //ground
        {
            Debug.Log("Added " + collision.transform.name + " to groundCollisions.");
            groundCollisions.Add(collision);
            return;
        }
    }

    private void OnCollisionExit(Collision collision)
    {
        ContactPoint[] contactPoints = new ContactPoint[collision.contactCount];
        int contactCount = collision.GetContacts(contactPoints);

        foreach (Collision gc in groundCollisions)
            if (collision.Equals(gc))
            {
                groundCollisions.Remove(collision);
                Debug.Log("Removed " + collision.transform.name + " from groundCollisions.");
                return;
            }
    }

I spawn on the ground,
console prints Added floor to groundCollisions. as expected
I move up to a wall
console prints nothing as expected
I move away from the wall
console prints Removed wall from groundCollisions. which is not possible in my opinion

if (collision.Equals(gc)) #<- because of this part here
            {
                groundCollisions.Remove(collision);
                Debug.Log("Removed " + collision.transform.name + " from groundCollisions.");
                return;
            }

how can the collision equal the one in the ground collection if they are colliding with two completely different objects as shown by the console?
is it just that the Collisions are a non comparable type?
comparing their transforms yields the same results

also, note that the groundCollisions is a HashSet<>

[topaz ocean]

How do I rotate a pre-existing quaternion an amount of degrees about a variable axis?

[cobalt wave]

https://docs.unity3d.com/ScriptReference/Quaternion.AngleAxis.html

[topaz ocean]

this only seems to return a post-operation value, how would I add this to another quaternion?

[cobalt wave]

transform.rotation = Quaternion.AngleAxis(30, Vector3.up); damn it even has an example

[topaz ocean]

:|

this doesnt answer my question

[cobalt wave]

i think they literally mean add though

[topaz ocean]

yes, and I understand that part, the problem is that you cant add quaternions

[hexed pecan]

That doesnt rotate an existing quaternion though

[cobalt wave]

yea i missunderstood

[hexed pecan]

AngleAxis can still be used here, you can combine rotations with * operator

[topaz ocean]

nice

thanks

[hexed pecan]

The order matters in some cases

Like a * b can be different than b * a

[topaz ocean]

Im trying to calculate object orientations before they become transforms, so quaternion math is something ill have to famliarize myself with

[hexed pecan]

The only math operators you need to know is the Quaternion * Quaternion that I mentioned and also Quaternion * Vector3 to rotate a vector

And all the helper methods: LookRotation, FromToRotation, AngleAxis, etc

[topaz ocean]

epic

[wintry crescent]

Hi - is converting between quaternions and euler angles fast or not really? Compared for example to calling transform.rotation

[topaz ocean]

previously I was generating transforms by having a parent and creating children in it's local space, but im planning to ditch that hierarchy for more stable rigidbody simulations :)

[wintry crescent]

I'll be doing it a lot and idk if I need to optimise it

a lot - I mean thousands per frame

[hexed pecan]

They aren't exactly cheap operations

I have seen Internal_ToEulerRad or whatever pop up in my profiler every now and then
Especially when doing procedural animations/active ragdolls

[topaz ocean]

Im trying to generate a car, so I only need to do these operations once so that I can force objects to remember their original relative orientation.

[cobalt wave]

they weren't replying to you oops
quaternion multiplication isn't expensive generally

so don't worry

[hexed pecan]

That will probably affect your performance. Use the profiler with deep profiling mode to find out

[cobalt wave]

does anyone know why my code behaves the way it does?
the post above these convos, I can reply to it

[hexed pecan]

OnCollisionEnter/Exit isn't really reliable. You can exit one collider but still be in contact with a previous one.

I mean it's reliable in doing what it does

Im looking a bit more into it hold on

[cobalt wave]

yes I'm aware of that, but the if statement seems to be behaving weird
like, how can that be true if they are two different collisions?

[wintry crescent]

yeaaa, thought so
I have a bit of a problem then
because I will need to do a ton of calculations on rotations (either eulers or quaternions) for my machine learning project
adding noise to it, to be specific
Basically what I'm doing is reading a list of rotations/positions from a file, then every frame setting a ton of copies of gameobjects to that data, but each copy gets some (different) noise added to it
and I'd like to squeeze out preformance, as much as I can, I'm hoping to train my agent overnight :/

[hexed pecan]

I have never used Equals with a collision, seems a bit sketch

Hmm do you have this enabled perhaps?
https://docs.unity3d.com/ScriptReference/Physics-reuseCollisionCallbacks.html

[flint sierra]

Anyone know how to deal with Cannot build player while editor is importing asset or compiling scripts

[cobalt wave]

I used that one because == had the same outcome lol

I'll check that out brb

[lean sail]

I dont think comparing collision works, i was just trying it and i never got it to even remove my terrain from collision exit

[cobalt wave]

I even tried comparing their transforms (which are different as tested by the Debug and proven in the console)

[hexed pecan]

AFAIK if this is enabled then it will sort of "pool" the Collisions?

Which could lead to a reused collision to be the same object as in a different collision

[cobalt wave]

I set it to true and it still behaves the same
I don't think it's a physics issue tbh

I have no idea what is it though

[wintry crescent]

click around in your editor if there is no loading bar, or if there is, wait for the loading bar to finish

[cobalt wave]

it'd be nice if I could debug the HashSets themselves

[hexed pecan]

Set it to false, I was just thinking maybe it was true

[cobalt wave]

damn

you're right

[hexed pecan]

Why dont you store Colliders instead of Collisions though?

[cobalt wave]

it works now
I'm just afraid what does this mean in the long run

[hexed pecan]

What made it work? 🤔

[cobalt wave]

because I need the collision information, not collider information

[cobalt wave]

setting Physics.reuseCollisionCallbacks to false

[hexed pecan]

Wasnt it false to begin with?

Or it was true?

[cobalt wave]

it was true to begin with because that's the more optimized way

less work for the garbage collector

[hexed pecan]

Makes sense that it fixed it then

[cobalt wave]

it'd be awesome if I could set this value to be false only for my player and everything it touches
because the enemies and everything else won't need that luxury

[hexed pecan]

The doc says it reuses one Collision if its true

[cobalt wave]

and well, if I have alot of entities walking around and colliding that just sounds like a lot of collisions to sort through

[hexed pecan]

Keeping a Collision object alive for longer than the collision message method seems sketchy to me anyways

[cobalt wave]

I'll try to think of another way

but if I don't think of sum else, this still works, so thanks

[hexed pecan]

Don't store a list of Collision, use a custom struct with the data you need

[heady iris]

Collision has a bunch of cruft you probably don't care about

[cobalt wave]

well the actual reason is really dumb

[hexed pecan]

What data are you currently using from the stored Collisions? I see only transform

[cobalt wave]

it's cheaper to compare collisions
than to create a new vector
run a loop to get an average of all the contact point normals
and then compare that average vector to a stored one

because I really only need the average vector of the collision

foreach (ContactPoint cp in contactPoints)
            avgNormal += cp.normal;
        avgNormal /= contactCount;
        Debug.Log(avgNormal);
        if (avgNormal.y > 0.95f) //ground
        {
            Debug.Log("Added " + collision.transform.name + " to groundCollisions.");
            groundCollisions.Add(collision);
            return;
        }

this is what decides if the collision gets added

which is fine because it's necessary

[hexed pecan]

You just reminded me of this extension method I wrote years agocs public static Vector3 GetAverageNormal(this Collision col) { var count = col.contactCount; var result = Vector3.zero; for (int i = 0; i < count; i++) { result += col.contacts[i].normal; } result /= count; return result; }

Now that I look at it, its kinda garbage
I should at least normalize the result

[cobalt wave]

foreach (ContactPoint cp in contactPoints)
  avgNormal += cp.normal;
avgNormal /= contactCount;

I would have to also have this in the exit too
which isn't terrible but still

[cobalt wave]

ayo

we both wrote the same one