archived-code-general

[vale wharf]

I think my issue is that I'm storing the selected cells as chunk relative so you can have multiple cells selected in the same world position but different chunk-relative positions

gonna try storing the selected cells as their world position instead

[glacial mountain]

Makes sense

[vale wharf]

ye that worked

[glacial mountain]

eyyyy

Nice

Thats awesome

[prime lintel]

First time creating projectiles using Sprites here, not sure why Instantiate doesnt create 'working' projectiles

public GameObject CreateProjectile(GameObject prefab)
{
    return Instantiate(prefab, ((LaserDrone)m_mob).m_attack01Origin.position, new Quaternion(), m_projectileParent);
}

private void DoAttack(Transform target)
{
    if (m_attack01.interval.cur != m_attack01.interval.min) return;
    var projectile = m_context.CreateProjectile(((LaserDrone)m_context.m_mob).GetAttack01Prefab());
    projectile.GetComponent<RedLaserBullet>().SetTarget(target);
    projectile.GetComponent<RedLaserBullet>().Init();
    m_attack01.interval.Maximum();
}

If I placed the prefab directly in the scene, it would fly and move as expected, however when spawned by the Mob, it only expires naturally (as specified by an Update function in the base abstract class). It does not move, it does not even render.

Am I doing something wrong with instantiating the object?

[knotty sun]

do not use new Quaternion() use Quaternion.identity

[prime lintel]

Thank you, however they are still invisible and non-functioning

Would it help if I posted the script on the projectile?

public class RedLaserBullet : AttackProjectile
{
    [SerializeField] protected float m_Speed = 4f;

    protected override void Update()
    {
        base.Update();

        m_rb.linearVelocity = transform.right * m_Speed;
    }

    public override void Init()
    {
        if (!m_target) return;
        Vector3 dir = m_target.position - transform.position;
        dir.y = 0f;
        transform.rotation = Quaternion.LookRotation(dir);
    }
}

[knotty sun]

if they are instantiated but invisible it usually means they are rotated by 180 so you are looking at the back

[prime lintel]

I see, it now appears and moves. Thank you. Will continue debugging

[prime lintel]

I have a system setup to return the transform of my friendlies. I noticed that when I calculate direction with this transform position, it would aim towards the little line under the character (I have confirmed that the transform returned is the root 'player' object). Why is this so? Should the transform position return the center of the object?

[hexed pecan]

It returns the pivot of the transform, not the center

[prime lintel]

How would I find the center?

[hexed pecan]

Your gizmo is set to Center in the top left corner

[hexed pecan]

You could use your collider's center to calculate it

[prime lintel]

would bsing everything I create off of a pivot-based gizmo be optimal?

[hexed pecan]

Or get the total bounds of your renderers and get the center from that, but might be overkill

[prime lintel]

I have three colliders, if I returned anything but the center it would be sub-optimal, do you have any suggestions on ways to retrieve the center collider? I am hoping to add other 'friendlies' that may only have 1 collider or 2, I hope not to hard code too much

[hexed pecan]

Collider has a bounds property

And bounds has Encapsulate which lets you combine multiple bounds

Ah wait this is 2D?

Actually yeah should work the same in 2D

[prime lintel]

sounds great, thank you!

[leaden yew]

Hi! It is possible to get Identity provider for a user in js unity cloud code?

[worn wing]

Does anyone know how to detect a screen tap on a mobile game running in webGL? I'm trying this but it doesn't work:
if (Input.GetKey(KeyCode.Space) || Input.touchCount > 0) {
doStuff();
}

(I'm using unity 6 if that matters)

I was thinking of just placing a transparent button over the whole game (Since this is the only interaction) But idk if that's a good way to solve this problem.

[abstract mesa]

Key? Wouldn't you be waiting for a mouse click?

[worn wing]

I also tried adding || Input.GetMouseButtonDown(0) But that also didn't work

(The space button is for when playing on desktop, need support for both platforms)

[abstract mesa]

Have you tried using https://docs.unity3d.com/2019.1/Documentation/ScriptReference/EventSystems.EventTriggerType.PointerDown.html ?

[vestal arch]

that entire namespace doesn't exist in unity 6

[abstract mesa]

Ah

[worn wing]

Yeah so that wont work lol

[abstract mesa]

What about Input.GetTouch()?

[rigid island]

have you actually tried logging the function to see if its even running ?

[worn wing]

It works when playing on PC with the spacebar. Idk how to read console log in a game running on a server.

[rigid island]

you don't, the logs are routed locally to console.log
the game runs locally on your machine even if its hosted else where

[abstract mesa]

Can make a text element in UI and have it change runtime

[worn wing]

Ahh ok, I'll go try some things then

[rigid island]

yes. also #💻┃code-beginner

[worn wing]

How to open console on mobile?

[rigid island]

you have android?

[worn wing]

Yes, playing on chrome browser app

[rigid island]

there is a way to remote logging in firefox, I did it a while ago gotta find the link again

idk about chrome though, maybe they do too

[rigid island]

found this for chrome:

In Android go to Settings, search build number, then click on it several times to activate developer mode
In Android go to Settings > Developer Options > Enable usb debugging
Connect to computer with usb cable
In desktop Chrome type chrome://inspect , then press enter
In mobile open url then check it, on this page on desktop chrome://inspect/#devices

[worn wing]

Ok I'll try that, what should i log? Is there a way to test the input?

[rigid island]

put the log inside the if(input statement

log it on PC webgl first, then do mobile

you might need to make it a Devbuild

[worn wing]

I'll test this in a dev build

And ill also check for GetMouseButtonDown

They both work when simulating mobile in the browser, now ill test on my actual phone.

Ok i cant figure out the console on mobile, so ill just add an sfx to the input

[abstract mesa]

UI text for runtime on android works well.

[rigid island]

you have to use devmode and authorize pc. You never used adb before?

[worn wing]

adb?

Ok but it's working with the sfx!

[rigid island]

adb - android debug bridge

[worn wing]

It' does the boing once and the coin a lot. So I'll add it to the other code and it will hopefully work. Thought i tried these earlier tho.

[rigid island]

because coin just checks touches everyframe so its true every frame , buttonDown is a single frame

[fathom quartz]

Hello . i want my text to enter one animation state at start and then stop and never appear again. i tried using animation but it fades the text back in, how do i fix that

[vestal arch]

wait *db is debug bridge? i thought it was just __d__e__b__ug 😭

[worn wing]

Do you mean it's looping now. You can disable looping

[fathom quartz]

yeah its looping

[worn wing]

Doubleclick on animation_text and disable it

[rigid island]

lol they just decided , hey lets shorten this word instead of acronym

[vestal arch]

i just kinda accepted the g* suite of stuff
gcc - c compiler
g++ - ++ compiler
gdb - debugger

[fathom quartz]

thanks bro u saved me some time

[worn wing]

Also had trouble finding that first lol, it's kinda hidden

Using it like this doesn't work :(

I'll check if it works for the jump code tho

To see what is the problem

[vestal arch]

if you're waiting for it, you'll need && for the negated condition

!(a || b) = !a && !b, by de morgan

[worn wing]

Oh yeah that's true wow

[vestal arch]

if you're not familiar with de morgan, try stepping through the logic:

• to continue with the loop, either:
  • space is not pressed.
  • screen is not touched.
    a desktop user will not create touches, so the latter will always be true.
    a mobile user will not press space, so the former will always be true.
    hence, the loop will always continue

[worn wing]

Yeah the input works for the jump code.... So the input wan't the issue AAAAA

Thanks for helping tho!

[worn wing]

Yeah, made a mistake there lol, thanks for letting me know!

[trim schooner]

I'm scrolled way up, and only seeing a couple msgs... there's no need to use a browser for debugging Android. There's a package called 'Android Logcat' that does it much easier.
There's also a free asset on the store called 'Luna Console' which puts a console in app

[rigid island]

Oh nice. I didn't think logcat worked with debugging browser logs. Good to know these new packages exist 🙂

[trim schooner]

I may have missed relevant info.. that makes what I said null

[crisp bronze]

I have a project done on Windows. I opened it up on a Mac, but for some reason, Vector3 positions are wonky on the Mac. Projectiles that should be spawning at a firePoint.position are appearing at completely different points in the level

Is this some sort of bug when transferring projects between Windows and Mac?

[rigid island]

not at all. I do it daily

[trim schooner]

the transfer is just a coincidence, not a cause

[rigid island]

are you certain you're checking the correct scene and are the scripts are up to date ?

[crisp bronze]

Yup, I haven't really changed anything in the scripts at all

[vale wharf]

Getting an annoying "fake" shader error (i.e. an error that isn't actually breaking anything in my shader) about SampleMainLightCookie being undeclared.

This is the code from the hlsl file that the error is pointing to:

void MainLightCookie_float(float3 WorldPos, out float3 Cookie)
{
    Cookie = 1;
#if defined(_LIGHT_COOKIES)
        Cookie = SampleMainLightCookie(WorldPos);
#endif
}

and yes, despite this error, the mainlight cookie is working fine and affects my shaders.

[rigid island]

what exactly is the new poisition they go to ? Vector3 would not change how it functions

[covert sentinel]

This is probably a very simple answer but would anybody know why when I put my PlayerJump function into FixedUpdate it takes multiple pressed of the key for the function to fire off? (The GetInput function is in Update, not Fixed Update.)

[vestal arch]

fixedupdate and update run at different rates

by the time fixedupdate is called, update may have been called again, and in that next frame, jump might not have been pressed, so jumpInput would be reset

[covert sentinel]

Do you recommend both being in FixedUpdate or Update? I know it’s advised to keep all physics based functions in FixedUpdates to limit disparities across instances of the game.

[vestal arch]

since it's a button-type input, setting the velocity would be done as the input is recieved, ie per-frame

[leaden ice]

Input goes in Update
Physics goes in FixedUpdate

[vestal arch]

time-based stuff goes in fixedupdate
simply setting a velocity isn't time-based

[leaden ice]

You need to store the player's intention in Update, and handle that in FixedUpdate

[vestal arch]

if you were doing, say, velocity += acceleration, that would need to be done in fixedupdate

or that friction, that'd also need to be in fixedupdate (but why do you have that instead of just... applying friction/drag on the rigidbody)

[crisp bronze]

what exactly is the new poisition they

[covert sentinel]

It’s just for a bit more control over the friction without having a global effect in game. I might scrap it later on but just threw it in there for prototyping.

[covert sentinel]

Sorry to ask another question but what is a simple explanation as to why the character horizontal movement works fine with the input in Update and the PlayerMovement function in FixedUpdate but the PlayerJump function does not? Is it because it’s a button hold vs a button press?

[robust dome]

probably

in short do not use FixedUpdate for user input.

it is only 50 calles per second

Update is much more depending on your specs

[vestal arch]

don't think about the physical buttons, think about how they're used
movement is an axis, it's a constant value
jumping is a button, it's an instantaneous event
input is frame-bound, so that constant value is updated once per frame
but the instantaneous button will only last 1 frame

[fair hemlock]

anybody know how to get a linear acceleration to a rigid body without directly modifying its velocity?

[vestal arch]

the AddForce method

[fair hemlock]

yea but that is m/s^2

[vestal arch]

that's what acceleration is

[fair hemlock]

yea im asking if there is a way to create a acceleration that is linear m/s

[vestal arch]

acceleration is in m/s^2

that's kinda by definition

m/s is velocity

[fair hemlock]

yea ik

[vestal arch]

"linear" just means directional and not rotational

[fair hemlock]

im asking if there is a way to change the acceleration to m/s

[vestal arch]

no, that's not what acceleration is

you can use an impulse instead

[fair hemlock]

yea lemme try that

[vestal arch]

there's a table for that somewhere

#archived-code-general message

Force is T^-2 L^1 M^1 (kg m/s^2, N)
Impulse (Momentum) is T^-1 L^1 M^1 (kg m/s)
Acceleration is T^-2 L^1 (m/s^2)
Velocity is T^-1 L^1 (m/s)

[fair hemlock]

yea im looking back into impulse and Force mode bc i had bad information before

[steady otter]

How would I be able to add in a slider for the sfx and background music of my game? I have been trying to wrap my head around how to link the slider audio mixer and the game all together but I can't seem to figure it out

[rigid island]

its one float, not much to figure out

also probably a #💻┃code-beginner question tbh

[tacit fiber]

https://paste.ofcode.org/Xu2JRBYzEGhcjL7ugmMZWa

So i have this script, i found out a few things in Unity. See screenshot. Bridge is parent to a collection of objects who forms the 3d object Bridge, Bridge is also the child of another object.
Objects of Schip which is also the child of Boot Story.

I have no clue how to fix this.
The objects of bridge should ALL be inactive when BargeBarge.To and BootBoot.To hits the objects of bridge. when they don't collide anymore the bridge is active again.

What am i doing wrong?

bridge itself has a boxcollider with the script attached. it's supposed to dissapear when it hits the bridge.

forgot to add the hierarchy oops

[iron spade]

Hello, I have a text child of my button is there a way to rotate the button without rotating the text ?

button.image.transform.rotation

ive tried to rotate directly the image of the button but it doesnt work

[wicked scroll]

don't cross-post

[vapid apex]

Is there a way to raycast from camera, via mouse position, onto the navmesh?

I want to have my right-click to ignore all entities in the world, and just move to the raycast intersection on the nav mesh.

[wicked scroll]

like https://docs.unity3d.com/6000.0/Documentation/ScriptReference/AI.NavMesh.Raycast.html?

[vapid apex]

well, i tried this, but read what it does

[wicked scroll]

oh yeah, between two points

[vapid apex]

it's about checking if the agent can move towards the point

[wicked scroll]

you probably need to hit the surfaces themselves since the nav mesh isn't a collider anyway

you might be able to grab the nav mesh and build a collider from it and cast against that

but it feels simpler to just hit the actual surfaces

[vapid apex]

that's what i do atm

directly casting onto the navmesh would be better though ^^

thats why i asked

[wicked scroll]

yeah, I'm not sure I agree but I don't have a strong argument either way

I feel a little bit like coupling those things so tightly isn't actually what you want long term

because you end up in situations where, like, the player thinks they are targeting something visual which they'd expect to be blocking, but you have no way of knowing that because your are only able to query against your nav mesh and not the world at large

[vapid apex]

ideal function would be "NavMesh.FindClosestPointOnMesh(Ray ray);"

[tacit fiber]

could someone check my issue?

[wicked scroll]

hmmm wouldn't the closest point on the mesh always be the same at all points along the ray?

[vapid apex]

this is good though. cause left click checks for objects. but right click should kinda be a 100% "moving" instruction

e.g. what if you want to move to a point that is in the middle of a group of units?

[wicked scroll]

yeah I can see the logic, I just feel like in reality it ends up being extra effort to give yourself less flexibility long-term

[wicked scroll]

that's kind of what I'm saying, that the targeting layer doesn't necessarily map directly to anything that already exists (visual world, nav mesh, ground plane, wahtever) and so maybe should be its own thing

anyway that's probably not very useful but makes me want to look at a higher level solution

[wicked scroll]

back to this though, i'm not sure you need the ray at all

you can just query the closest point to where you'd start your ray

[vapid apex]

since how my game is basically on a flat surface, i might get away by just raycasting onto a plane, just need to rework it whenever i decide to add slopes or so ^^

it's kind of a 2.5D game, or i could just abuse the terrain component as the ground and raycast all movement instructions on terrain only

[misty drift]

Hi! Could you please give me some links about rigid body/transform? I'm making game without physics, so I assume I don't need rigid body in this case, but I saw some info that moving objects via tranform.position is not a good approach and even may impact performance. Another issue I have if I don't use rigid body, I had to use colliders and OnTriggerEvent and it doesn't work with OOTB unity layers configurations. Or may be someone can clarify those points to me -)

[leaden ice]

There's nothing wrong with moving an object via the Transform, that's what the Rigidbody does under the hood.

But if you want to use collision callbacks and colliders then you are mistaken about your game not using physics

You are indeed using physics in that case

[misty drift]

My use case is - I'm doing simple space shooter, there will be bullets and enemies. Yes, those will collide, but on collision will be destroyed. So I don't want to have interaction in terms of bouncing off or something like this in those cases. I feel in this case I don't need rigid body and that's why I though no need physics (since collider responsible for collision detection).

I'm probably missing something big here -) haha )

[cold parrot]

a rigidbody is also used for detecting and firing trigger events

you can set it to "kinematic" to disable force simulation

you can do your whole thing without rigidbodies only if your entire collision detection is implemented via ray- and overlap casts on trigger colliders.

[leaden ice]

That's all physics what you're describing

You're just talking about using trigger colliders instead of non triggers

And whenever you have moving objects with colliders, it's best practice to use a Rigidbody

[misty drift]

So it's better to add collider + rigid body, set body to kinematic so it won't trigger physics and move object via rigid body? Is that's right?

[leaden ice]

No, use a trigger collider

Not kinematic

[misty drift]

So basically I do this if I understood correctly.

[tawdry jasper]

Hey, I'm using animation rigging IK, which works on top of the animator. I use no actual animations, I have an empty animation controller, and no avatar. I connect objects at runtime, filling out premade ik constraints, add those rigs to the rig builder and rebuild. This works fine. But when I remove game objects, and remove rigs from the rig builder, I get could not resolve ... because it is not a child Transform in the Animator hierarchy It still appears to be working but is there anything I could do to supress the warnings? or maybe there's some proper way to clear the animator state?

[misty drift]

I'm also have a question about configuring game level. For example I do plan to have several groups of enemies to spawn withing level at different positions and different time. As I see it I implement scriptable object and put configuration there with data like enemy config, spawn position, spawn time etc.
But at the same time I feel configuring it via SO is a bit cumbersome. Is there good approaches to do such configs? I have something like this for now, but position as Vector3 already makes me a bit nervous. Though If I drag and drop transform from scene, I feel it's also will be not good since there may be no transform on scene later.
I search some in internet, but usually it's simple guides how to create game object or spawn 1 enemy via factory, but this is already done from my side.

Is there may be some good approaches to do this? Could you share with me please?

[tawdry jasper]

you're making SO's so you're comfortable with code, my general approach is try to use as much unity as you can. Unity already has a way to store enemy spawn points in a level: you put a game object in a scene. Come up with your own systems if a straightforward way via the editor is not enough and you're solving some problem.

[wicked scroll]

For something like that, it probably makes sense to place WaveSpawners in the scene and configure those (or something similar). Basically make use of the scene to position things since that's what it's for and that's the main 'important' thing you're trying to set up (and more importantly, want to be able to visualize)

[misty drift]

But won't I have to create new scene for each level in this case? While I could've reused one scene for several levels? Or I'm overthinking it?

[wicked scroll]

I expect you would want a scene per level

everything depends on what you're making and how you want to work, but that's a lot of what scenes are for

if you wanted, you could use prefabs instead

a prefab per level, and the prefab lives at the origin and has the setup for a given level

whatever feels better to you

[tawdry jasper]

If you want different, but hand placed, enemy configurations on the same level geometry you can use additive scene loading. Have a scene with the geometry, then open a new scene with just the enemy placement.

[misty drift]

It's simple space shooter, so I have player at bottom enemies from top-and sides. While background is scrolling under player. That's why I though My scene basically all in camera all the time and enemies created outside of view port.

[wicked scroll]

ah yeah, that's kind of a toss up for me as to if it's worth doing any of that

one solution is to decide on x spawn points and name/position them

and then in your config, pick the spawn from a dropdown

that way you aren't storing all these one-off positions and can move an entire class of spawns if you need to

[misty drift]

And in this case it's better use prefab I believe so it's on scene?

[wicked scroll]

well in this case you'd just have the one scene for everything

and then you'd use SOs to configure your levels like you are now, you'd just use predefined, named spawns instead of setting it manually for every spawn

[misty drift]

Got it. This is much better from what I have now. Since manually entering coordinates looks like very bad thing 🙂

Thank you!

[misty drift]

I will check this approach too. I'm not sure if it will suit me here, but it's totaly new thing to me with additive scene loadings.

[wicked scroll]

yeah, you just need a reasonable abstraction around 'where are they spawning' and that could be a whole scene view, but that seems more cumbersome than it's worth

[tawdry jasper]

https://issuetracker.unity3d.com/issues/could-not-resolve-dot-dot-dot-because-it-is-not-a-child-transform-in-the-animator-hierarchy-warnings-after-animations-play I guess this is not meant to run at runtime by design. I'll live with the warnings, need to check if this actually works in a build. I have a backup plan to have an invisible skeleton animate / rig animate, and I'll attach my runtime parts to the invisible skeleton.

[misty drift]

Thank you for posting your research 🙂 How many times we saw "I solved it" without explanation in some famous site about coding -)

[dawn nebula]

Anyone ever use the Blackboard design pattern?

[cosmic rain]

Probably many people. Without even realizing it.

[hexed pecan]

Sure, mostly for animations, AI and proc gen

[dawn nebula]

Was thinking about using it for card game effects. Something I can just set random values to so multiple parts of an effect can communicate.

[hexed pecan]

Would the values have different datatypes or are they all int or float?

[dawn nebula]

Different data types likely.

For example imagine an effect that was.

• Deal 1 damage for each card drawn this turn.

• One part of the effect would listen for CardDrawn events and tick up some number in the blackboard.

• Another part of the effect would set the value back to 0 at the end of your turn.

• The active part of the effect would look at this value in the blackboard to determine the damage it needs to deal.

[hexed pecan]

Sounds sensible to me

[dawn nebula]

Ya the real question is... do I just go with <string, object> >_>

[hexed pecan]

I usually have different dictionaries for different datatypes

And then have functions like SetInt/GetInt/SetFloat etc. to access them

Much like materials or the animator does it

I assume you would only have a few datatypes anyway

[mossy flare]

Hello, I need some help figuring out a problem with my animators. My random character builder has a "build" button in the inspector that spawns in the module parts and assigns their skinned mesh renderers to adhere to the main rig. The issue is that if I press this button and spawn the gear out of playmode, the character does not animate, not even the bones. I don't know what could be causing this. Can someone explain what could cause an animator to not animate bones?

[hexed pecan]

@dawn nebula you can always have a <key, object> for special cases

Or you can go completely with object if it is not performance critical

[hexed pecan]

Show us how you are doing it currently?

[mossy flare]

Doing what? Building the character?

[hexed pecan]

The code you use to assign the gear

[mossy flare]

void Attach(SkinnedMeshRenderer targetSkin, Transform rootBone) {
        var newBones = new Transform[targetSkin.bones.Length];
        for (int i = 0; i < targetSkin.bones.Length; i++) {
            foreach (var newBone in rootBone.GetComponentsInChildren<Transform>()) {
                if (newBone.name == targetSkin.bones[i].name) { newBones[i] = newBone; }
            }
        }
        targetSkin.bones = newBones;
    }```

It was from a code monkey video, I believe

Moreover, if I just drag a module prefab into the hierarchy of the character during runtime with no code touching it, it animates

So the issue probably lies with what bones are affected by the animator, but I don't know what determines that

[hexed pecan]

So you mean if you assign the renderers in edit mode and enter playmode, those renderers dont follow the animations?

[mossy flare]

Nothing follows the animations. This isn't a problem with the skinned mesh renderer attachment, because that correctly attaches the renderer to the bones. The bones themselves aren't animating.

Well, it probably is something wrong with the attachment

[hexed pecan]

So your character isnt animating at all

[mossy flare]

Nope. Except for the red IK bones which aren't used or touched by anything

Thought that might be relevant

[dawn nebula]

Main concern is boxing and unboxing of value types, ya?

[hexed pecan]

Yea

Also can use enum key instead of string key

Makes it easier to develop too - getting intellisense for the key names etc.

[hexed pecan]

🤔Look for any warnings or errors when you play

Are you using animation rigging or other anim packages?

[mossy flare]

No

What determines which bones an animator will affect?

[hexed pecan]

Not exactly sure but maybe the avatar?

[mossy flare]

Oh thank god it fixed itself randomly

Thanks guys

I genuinely touched nothing, I think I disabled and then enabled a script, it works now

I love it when god fixes my bugs for me

[mossy flare]

Okay I think I figured out the cause of this. The presence of the module's own rig makes the animator animate it over the main rig. When not present, the correct bones animate

What causes this preference? no idea

Also, when I spawn it in during runtime, the bones animate correctly. Wtf.

[hexed pecan]

Does that hierarchy have more than 1 animator?

[mossy flare]

Yeah, each module has it's own animator

They aren't set with any controllers though

[dawn nebula]

I could maybe just create a generic wrapper around the value (like BlackboardEntry<T>) and put it in the blackboard. Still have a <string, object> and just cast the object into the proper type.

No boxing I think?

Like this

[mossy flare]

Okay so it doesn't work if I just spawn it in normally. But when ran through the script, it works. Something in this method causes the bones to correctly animate (not the mesh renderer, that works fine)

[hexed pecan]

You could have cs public class BlackboardEntryBaseAndcs public class BlackboardEntry<T> : BlackboardEntryBase

Then you can use <string, BlackBoardEntryBase> instead of <string, object>

[dawn nebula]

What's the benefit?

[hexed pecan]

Pretty sure that each object will be boxed here

[dawn nebula]

Why? BlackboardEntry<T> is a class. 🤔

The inheritance would just be
BlackboardEntry<T> -> BlackboardEntryBase -> object
instead of
BlackboardEntry<T> -> object

[hexed pecan]

What you are suggesting is probably fine

[dawn nebula]

I hope so 😛

[hexed pecan]

By the way, tell codemonkey that this code is garbage
SkinnedMeshRenderer.bones creates a new array every time you call it

[mossy flare]

What's the right way?

[hexed pecan]

I'm just saying you should at least cache the array instead of calling bones again each iteration

[mossy flare]

But it works? Clearly it's referencing something

[hexed pecan]

I didn't say it doesn't work, it's just unnecessarily expensive

[mossy flare]

I'll cache it

[hexed pecan]

Say you have 50 bones, it allocates a new 50 bone array 50 times in that loop

[dawn nebula]

Sounds good to me

[mossy flare]

Yeah wow no wonder I began seeing lag spikes at 20 spawns

[hexed pecan]

Looked at my old code and this is what i did in my project to copy bones for clothing:cs selfRenderer.bones = sourceRenderer.bones; selfRenderer.rootBone = sourceRenderer.rootBone;

But maybe the name checking in codemonkey's code is there for a reason... Like if the rigs are different

Not sure

[mossy flare]

Well

Wait that would work?

[hexed pecan]

Well, it works for me

[mossy flare]

Also why set root bone?

[hexed pecan]

Uhh why can't I find root bone on the docs? 🤔

[mossy flare]

Oh it's because there is no source renderer.

You're trying to put a skinned mesh renderer on a skeleton

[hexed pecan]

Shoulda clarified, the "source renderer" is the character's skinned mesh renderer here

Since it always has the correct bones I use that

[mossy flare]

I could tell, but the character does not have a skinned mesh renderer before it gets its parts

[hexed pecan]

Okay, well, that would make it a lot easier and probably more efficient

To have a pre-existing rig to copy stuff from

[mossy flare]

I'll do that

After I get the fucking thing to animate at all

So if I change the name of the root bone to penis then it chooses to animate the main rig

we did it

[hexed pecan]

Btw found the doc for root bone, for some reason it's only in the Manual and not in the Script reference

Seems like it's just for the bounds

[livid topaz]

hey peeps, having some weirdness in unity atm, needing some help, animation rigging is doing absolotely nothing

i added Rig 1 and HeadLook myself

then added the head node to the Tip property, used the 3 dot menu to auto set it up

i press play, move the headlook target, absolutely nothing happens at all

ive tried a few different ways to set this up over the week and had zero luck, but the unity import shows that the model is rigged fine in the humanoid setup menu, its really weird, like ive used this before and now its just not working at all, im sort of tempted to just write my own code to handle this because its just refusing to work

huh, if i try to use the rig setup options at the top of the screen, then run the game it just fully crashes, something is super messed up on my end and this is just an empty project with a humanoid in it

[hexed pecan]

Check the logs after you crash, maybe some useful info there. This is more of an #🏃┃animation question tho

[livid topaz]

absolutely nothing of use to me in any logs

[dawn nebula]

@hexed pecan I did end up creating a base class.

Was useful for defining a copy method for when I wanted to duplicate entries across 2 blackboards.

[livid topaz]

rubber ducky magic happened, after a solid week of it not working, i complain once, do exactly what i did before and it works

love that, thanks unity

now i just gotta debug why the character is in the floor hahaha

[hexed pecan]

Use a stable version of anim rigging and unity if you aren't already

[livid topaz]

i am using the latest on both

[soft scroll]

Hey guys (:
I'm doing a TED talk in english class about problem solving, and I'd be very happy if you answered this short survey for it.

https://docs.google.com/forms/d/e/1FAIpQLScukPP9KqwnpHbPdgO2cYwYDqXT-GywhHFXq4tLU3dIZbPZVQ/viewform?usp=sf_link

[toxic torrent]

    {
        // Ensure there is a path and the agent is set to move
        if (ConnectionArray.Count == 0 || !agentMove) return;

        // Get the current target position
        currentTargetPos = ConnectionArray[currentTarget].ToNode.transform.position;

        LocatioOfNextNode = currentTargetPos.ToString();

        // Move the car towards the current target position
        Vector3 direction = (currentTargetPos - transform.position).normalized;
        transform.position += direction * currentSpeed * Time.deltaTime;

        // Rotate the car smoothly to face the direction of movement
        Quaternion targetRotation = Quaternion.LookRotation(direction);
        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);

        // Debug.Log("currentTargetPos : "+currentTargetPos);
        // Debug.Log("Direction :"+ direction);
        // Debug.Log("currentTrget : "+currentTarget);
        if (Vector3.Distance(transform.position, currentTargetPos) < 0.5f)
        {

            currentTarget += moveDirection;
            Debug.Log("CurrentTarget : " + currentTarget);
            Debug.Log("ConnectionCount : " + ConnectionArray.Count);
            if (currentTarget == ConnectionArray.Count)
            {
                Reached = "Location reached ! Returning To start";
            }


            // if (ConnectionArray.Count <= currentTarget)
            // {
            //     moveDirection = -1; // Reverse
            //     currentTarget = ConnectionArray.Count; // Set to last index
            //     Debug.Log("CurrentTarget : "+currentTarget);
            //     Debug.Log("ConnectionCount : "+ConnectionArray.Count);
            //     if (currentTarget <=-1)
            //     {
            //         Reached = "Reached start!";
            //         agentMove = false;

            //     }
            // }


        }


    }```

hello i need help im using astar algorithm to path find the shortest path and on that path i have to move a car from start to end and back to start while returning to start i face a problem of the car stopping just before the start can any one help me

[cosmic rain]

Is that ai generated code? The answer to your question is very simple if you read the code and understand what it does.

[toxic torrent]

i tryed on my own it didnt work so i used chat gpt

[cosmic rain]

Read and understand the code. Or ask chat gpt for clarification.

[toxic torrent]

ok but u understand my problem whats happning right ?

ill read it then please help me if i cant fix it

[cosmic rain]

Yes. As I said, it's very simple. Check the condition that you check to keep moving.

[toxic torrent]

i dont get it please help me

[toxic torrent]

your talking about if (ConnectionArray.Count == 0 || !agentMove) return; yess but even without it it incounters the same problem

while counting the currentTarget it doesnot count the start as a target so while returning it stops at the node which it started counting on

[cosmic rain]

Then just add the start to the nodes list

[toxic torrent]

how

its not ccounting the start as a location

it counts the location from the start location so the location of start is not in the array

[soft shard]

Im a bit confused, are you creating a presentation in the same structure as a TED talk for your class or are you reviewing an existing TED talk and incorporating it in your research? And what kind of information are you hoping this survey will help with? From reading the questions it sounds a bit bias toward correlating problem solving being a transferrable skill in other non-programming industries?

[soft scroll]

The survey will give me statistics to present in the ted talk

To strengthen my point

[toxic torrent]

the pathfindinglist.cs calculates the node location it starts from the start to the next node so it doesnot have the location of the start node

if node 0 is my start then the program is calculating the location of node 1 and puting it in index 0 so in the list there is no location data for node 0

if i reverse the array to move back then it will move to index 0 which has the location of node 1 not node 0

[soft shard]

Ah I see, so this is a presentation your giving in the same structure as a TED talk? If this is for research, it may also help to look into the neural activity related to problem solving and reasoning, if you havnt already

[soft scroll]

I'll look into that, although this is a 5 minute talk so I'm not sure if I'd be able to fit that in

[dusky tulip]

Hello, So ive been making this quiz game in unity and I really wanted help with this problem Im dealing with. Basically I have a script which loads scriptable objects as questions from a resource folder. I find it tedious to make a question one by on, so is there a way for the game to load questions from a script that has question all in one place?

ive been at it all day

[soft shard]

Ah, didnt have full context when you said "TED Talk", most I seen are usually around 15 minutes on the short end, and often try to focus on scientific research (although sometimes it literally is just a personal story with no stats or science) - for a 5 min presentation neural science might be too deep of a topic to explore, but ill check out your survey

[steady moat]

You are the one that created the original script ? You can do whatever you want. If you want to create a QuestionList which hold the question you are free to do so.

However, given the nature of a question, I would believe it is wiser to keep it divided by themselves. Obviously, it might be tedious to create them but so is 100'000 others manipulation. Not saying that it needs to be, but I'm saying that, sometimes, it might be justified.

[knotty sun]

why use an SO at all? You could load them from a text file

[robust dome]

i agree, just use a json file or something for your questions. no need for SOs in this case

[smoky bloom]

asked this in the talk channel but maybe it'll get more traction here with code focused people -

does the github npm package registry still not play well with UPM? i've tried adding it as scoped registry & doing the usual auth with .npmrc, & packages are published without the @orgscope/packagename to play along with the specific naming conventions of unity, but unity still fails to pull them due to missing auth

[charred pivot]

Haven't tried the github one, but we're using verdaccio and it works fine at least. No idea what would be different

[smoky bloom]

yeah have used both verdaccio hosted internally, & gitlab npm registry. Github is the one that seems to play up, according to previous posts on the forums

might just self host and deal with the maintenance myself

[indigo frost]

Not really Code, but are Sprites stored in the VRam? Or how can i store them in the VRam?

[wintry crescent]

they need to be in vram to be rendered at all, that's usually handled automatically

are you experiencing bottlenecks with cpu/gpu communication?

[indigo frost]

No, but im making a game For a Console where VRam and Memory is Crucial, so i wanted to know If Sprites are stored in the VRam, Normal RAM, or in both.

[wintry crescent]

unless you have tons of 4k sprites, you don't need to worry about that, usually leaving it to the automatic unity systems is best for smaller projects.
If you DO have issues, then put them in an atlas, and if that doesn't solve the issues, look into addressables and load in the sprites you need, as you go

[indigo frost]

Alright, thanks!

[wintry crescent]

but it also depends on which console exaclty you're building

if it's an ARM based console, don't even bother, unless you're exceeding the overall memory, then addressables

or fix your issue elsewhere

[indigo frost]

Alright

[knotty sun]

not a code question. #🎥┃cinemachine

[crisp imp]

Library\PackageCache\com.unity.ugui\Runtime\UGUI\UI\Core\Layout\LayoutRebuilder.cs(241,26): error CS1061: 'ObjectPool<LayoutRebuilder>' does not contain a definition for 'Release' and no accessible extension method 'Release' accepting a first argument of type 'ObjectPool<LayoutRebuilder>' could be found (are you missing a using directive or an assembly reference?)

Getting a weird error... not sure why. Just imported the unity ui package.

[shy notch]

Does somebody know why this line gives me an InvalidCastException? I genuinely have no single clue.
redBlock is of type RedGreenCube

RedGreenCube tmpTestBlock = Instantiate(redBlock, spawnPoint, Quaternion.identity);

[flint wyvern]

Hello i don t see why i get this error:

https://paste.myst.rs/sv3oznjt

[knotty sun]

because Instantiate returns Object

[flint wyvern]

NullReferenceException: Object reference not set to an instance of an object

PlaceingObj.cs:line 61

[shy notch]

How could I attempt to cast it?

[knotty sun]

either cast or use as keyword

[knotty sun]

preview.UpdatePosition(mousePosition);
preview is null

[shy notch]

I tried RedGreenCube tmpTestBlock = (RedGreenCube) Instantiate(redBlock, spawnPoint, Quaternion.identity); and RedGreenCube tmpTestBlock = Instantiate(redBlock, spawnPoint, Quaternion.identity) as redGreenCube;

I am not sure how to do it, since my IDE doesn't show it as an error

[knotty sun]

then you need to configure your !ide

[tawny elk]

💡 IDE Configuration

If your IDE is not autocompleting code
or underlining errors, please configure it.

Select one:

• Visual Studio (Installed via Unity Hub)
• Visual Studio (Installed manually)
• VS Code
• JetBrains Rider
• :question: Other/None

[rigid island]

https://unity.huh.how/runtime-exceptions/nullreferenceexception/stack-trace

[shy notch]

These ones still don't work though @knotty sun And I am using Visual Studio installed via Unity Hub and normally it shows errors

[knotty sun]

this
RedGreenCube tmpTestBlock = Instantiate(redBlock, spawnPoint, Quaternion.identity) as redGreenCube;
should definitely show an error

[shy notch]

it says cast is redundant in my IDE

[knotty sun]

that is not an error

[shy notch]

RedGreenCube tmpTestBlock = Instantiate(redBlock, spawnPoint, Quaternion.identity);
In my IDE it shows without errors, yet in Unity it gives me the invalidcasterror. And I don't know how to change this line to resolve the error in Unity when I try to execute this line

[shy notch]

My IDE is both autocompleting code as well as showing errors of other types though

[flint wyvern]

but why is it null?

[knotty sun]

because you never assign anything to the variable

[knotty sun]

Debug.Log($"redBlock {redBlock.GetType()}");
before the instantiate

[shy notch]

redBlock RedGreenCube

UnityEngine.Debug:Log (object)

[knotty sun]

then I cant see how that line is throwing an invalid cast exception. Screenshot the error and stack trace

[keen viper]

Can super help me with a simple script

I need a script for a sphere that knows where it is hit when it is hit and gives a lot of velocity in that direction

[shy notch]

I think I figured it out, I was writing code for the Editor and there was a typemismatched gameObject in the Inspector

That's why the IDE didn't show it as an error, but Unity did

Thanks for the help though

[rigid island]

Use oncollision method

[keen viper]

What’s that?

[knotty sun]

something for you to research

[loud rapids]

can classes from one script have instances made of them in any other script? if not, how do i make it so i can create instances of my class in any of my scripts?

[somber nacelle]

yes. what i'm guessing you are actually referring to though is a nested class, and that is still possible as long as it is public. but outside of the class it is nested inside of it would be called OuterClass.NestedClass rather than just NestedClass

for example:

public class SomeClass
{
  public void Start()
  {
    var x = AnotherOne();
  }
  public class AnotherOne { }
}

public class Other
{
  public void Start()
  {
    var x = SomeClass.AnotherOne();
  }
}

[loud rapids]

okay

now how do i make an instance of a class every time a method is called?

[somber nacelle]

call it's constructor in that method?

[loud rapids]

okay, i have a class called Atom.

no

i didnt mean to hit enter

[knotty sun]

make the method static. return the new instance

static MyClass MyMethod() {
   MyClass myClass = new MyClass();
   //  Do stuff
   return myClass;
}

[loud rapids]

okay i create a singular instance by writing Atom x = new Atom(); but i need to create a completely new instance each time the method is called

like i cant repeat Atom x = new Atom(); multiple times?

[knotty sun]

so put that line inside the method

[robust dome]

i think you have to learn some c# basics

[rigid island]

Look how simple. First & second result https://www.google.com/search?q=oncollision+method+unity

[lament mural]

If I wanted to create a google maps like effect where the zoom seems to happen from where ever the cursor (PC) or pinch center (smart phone) is with a perspective camera in Unity, how would I go about doing this? Or does anyone know of a project that does this?

[keen viper]

Thanks

[cosmic rain]

Probably just lerp/move the position of the camera towards a point above the target point, while also zooming.

[errant flame]

Hey , how can i trigger a InputSystem action via script

[quaint rock]

feel the need for that is a x/y problem

[errant flame]

For example when u store a input action reference in a field , when button pressed i want to send related data to that reference how can i do that

[cosmic rain]

I don't think that's an intended use case for the input system. It's supposed to receive the input from input devices. Not your project code.

[errant flame]

@cosmic rain I guess it's my fault I felt it a little late

Now all I do is to trigger the event called by the input action via the event bus and I will not interfere with the rest

thanks

[flint wyvern]

ideas on how to make this not clipping through but getting over when objects touch?

https://paste.myst.rs/sv3oznjt

[tulip breach]

I've heard alot of bad thing abouts goap's preformance as a solution for enemy ai, is it really that bad? or is it just like hated for some reason

[rigid island]

heard from where ? grape vine?
whats the legitmate arguement made there?

[tulip breach]

I dont know I've just read some people saying that its slow so im just double checking if its true here

[rigid island]

"some people"

[tulip breach]

idk just like on forums and stuff

[vestal arch]

we can't verify or dispute claims when we don't know what those claims are or where they're from

[tulip breach]

ah ok

goap v3 good?

[vestal arch]

very subjective

[rigid island]

goap v3?

[tulip breach]

https://assetstore.unity.com/packages/tools/behavior-ai/goap-v3-302434

this

[rigid island]

How should we know unless someone here purchased it

chances are 70% of people here built their own

at least I did

[tulip breach]

fair fair

[rigid island]

if its free , try it I suppose.

[tulip breach]

ok thanks for the insight

[timber rampart]

When you move an object, add some function to determine the correct target position. Something like:
private Vector3 GetTargetPosition(Vector3 desiredPosition) {...}
Into that function you input the position you would like to place your object. Then you loop over all other objects within your database. Compare renderer bounds to see if there is an overlap with any other object. If there is no overlap, just return the desiredPosition. If there is an overlap, "depenetrate" the transparent object and return the depenetrated position. There are different ways of how this can be done:

• Physics.ComputePenetration (requires your objects to have colliders)
• Compare bounds to compute offsets

You'd also need to think about into which direction you'd want to depenetrate. Physics.CoputePenetration takes the shortest path out of another collider. You could limit that to the X/Z plane in case your level is always flat. This also means that the transparent object will only "snap" to the other side of the placed object if your mouse is on the other half of the already placed object. For earlier snapping to the other side, alter your desiredPosition before depenetration depending on the direction of movement (= velcotiy) of your transparent object, so that the position you depenetrate is already on the other half of the object you want to get out of.

Besides, please use some code conventions: you mix different capitalizations, indentations are all over the place and you miss line breaks between functions, making it hard to read

good luck 🙂

[south steeple]

Hello, i'm trying to create a RPG but i'm having an issue on how to code design my abilities.
Currently:
a hero contains abilities,
an ability contains a cooldown, a cost, ref to the owner and a list of effects
an effect can be a damaging effect, a modify stats effect and other...

Currently when learning an ability you get a new instance of it.

Now my problem is i want to implement modifiers to my abilities. An ability can be modified by a talent tree, an effect from an equipment or anything else.

But what is the best way to implement this ?

[mellow hill]

You could look into something like this: https://www.youtube.com/watch?v=gYYfrtq6MrA

Essentially your system will contain multiple sub systems, you have your core ability system and then you would need some sort of stat/modifier system and It's this stat/modifier system that would be responsible for applying effects to your abilities, talents and equipment. There are many ways to implement and handle a system like this but this is just one approach that could help you implement and maintain such a system

[south steeple]

it seems really interesting, i'll try it out, thx !

[odd basin]

Hi all, I need help: transform.SetParent issue, I am calling it with 2nd argument WorldPositionStays=false, and while it gets parented the behavior is very weird. Some of the objects dont follow as they should but rather move "inverse" to the parent. Not sure if this is a code issue or editor issue. Other objects in the same loop get parented and follow correctly. It's weird. https://www.youtube.com/watch?v=AvSL-7KLjcw

[timber rampart]

the jittering looks like there is some collision happening for the plates in your right hand and PhysX tries to depenetrate them. Try activate the physics debug mode to see colliders. Other than that, check scaling (maybe somehwere is a negative scaling, maybe in your right hand?)

looks cool btw, I hope you can shatter those plates and throw them around 😄

[odd basin]

thank you. i think maybe you mean left hand? that is what I used in the video. Also I do isKinematic=true on the plates since they say not to do parenting otherwise. the jitteryness is I think just how it always is with XR grabbables. It's always looked like that. I did check hands for negative scaling but none, neither in the plates. I'm not sure if you'd continue to suggest the physics debug window, though I'm not too experienced with it or what to look for. And I'm glad you like it.

[astral flume]

private void OnDrawGizmos()
        {

            Debug.Log("Drawing Gizmos");
            Gizmos.color = Color.red;

            foreach (var point in splinePoints)
            {
                Gizmos.DrawSphere(point, 0.1f);
                Debug.Log(point);
            }

            Gizmos.color = Color.blue;

            for (int i = 0; i < splinePoints.Count; i++)
            {
                Vector3 currentPoint = splinePoints[i];
                Vector3 nextPoint = splinePoints[(i + 1) % splinePoints.Count];
                Gizmos.DrawLine(currentPoint, nextPoint);
            }
        }

I'm trying to figure out why my gismos are not drawn, I'm trying to crate a spline tool and want to see points in scene, This scripts is in all of my objects

any ideas?

[robust dome]

are the gizmos enabled in the editor

[astral flume]

yes, when i test it with a simple sphere draw its drawing it

I'm expecting points on my ring object.

[timber rampart]

oh okay, maybe the video is deceiving then, it looked partly correctly. If they are kinematic then yes, physics interactions shouldn't be a problem...
It does look to me like picking up a single plate is fine, but multiple cause errors. I'd say log local and worldspace positions of plates and hand before and after parenting. Maybe you exit somewhere too early in your loop?

Actually, why do you call the parenting with WorldPositionStays=false? This might cause position errors upon picking it up

[heady iris]

yeah -- If you do this, the local position of the object will be preserved

which could give you a very silly offset from the thing you parent it to

Also, whenever you're having problems with a Rigidbody not respecting the position you try to put it in, take a look at its interpolation mode

If the rigidbody is set to interpolate, it will overwrite the transform's position and rotation every frame

If it's not set to interpolate, it will wind up reading back the transform's position during the physics update

(and thus actually use it)

[boreal jewel]

im going insane, i have been debugging the same script for 3 hours, still doesnt work. it works perfectly fine in the unity editor, but for some bumfuck reason, doesnt work in build. wtf???
here is said script:

[heady iris]

link that on a paste site -- !code

[tawny elk]

Posting code

📃 Large Code Blocks

Use 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 format as C#, add cs to the first line:
```cs
// Your code here
```
Add a comment with a line number if there is an error message.

[heady iris]

and what problem are you having? is it not logging any thing at all, or is it just failing to rotate correctly?

[boreal jewel]

it rotates perfectly fine, it hits the player perfectly fine, but only in the unity player. in the build, it also rotates normally, but it just doesnt hit the player. the Shoot() function doesnt trigger at all.

[heady iris]

Does "yaya" get logged in the built game when the player overlaps the laser?

[boreal jewel]

let me see

[heady iris]

You may want to log the object you hit, in case there are tons of trigger overlaps

[boreal jewel]

it now works???

i built a dev build

it worked

then i built a reg build

and it works?????

i did not change any scripts

[sage spire]

wow buddy no swearing

[boreal jewel]

what the heck?

[sage spire]

much better

[boreal jewel]

[heady iris]

that happens from time to time, haha

It's possible you wound up running an older build, or that you just fixed it by accident

or...it's a hard-to-reproduce bug that involves the exact order of object creation or some weird timing quirk

[short quiver]

Is anybody aware of any framings that challenge the "XY problem"? I'm asking because I think that a situation can sometimes accurately be described as an XY problem, but not always!

[somber nacelle]

well that's neither unity related nor code related. but you could give this a read and then ask for futher help in some other server where offtopic/social dicussions are permitted: https://xyproblem.info

[short quiver]

mmm, yeah, that's true, okay will do

[keen viper]

how can i make my ball in my game move very fast when I hit it

[vestal arch]

depends on how you're hitting it
but maybe make it very light for a start?

[keen viper]

i did that

[vestal arch]

would help if you could provide more context

[keen viper]

I am making a vr rocket league type game were you use your hands instead of a car and I am having trouble making the ball because when I hit the ball it doesn't go very far

[vestal arch]

reduce drag and mass

[keen viper]

did that

[vestal arch]

and did it make a change?

[keen viper]

not really

[vestal arch]

you could make a code solution by detecting relative velocity and applying a much larger force, but i think this is just a physics setup issue tbh

[keen viper]

ok

thanks

[keen viper]

I fixed it

[misty drift]

Hello! Could you help me please with SO and link to scene objects?
I know by default it's not supported, but I found out in Unity doc about ExposedReference and it looks like it what I want.
I've found few videos but can't make sence of how it's actually works. And in Unity it's example with PlayableAsset that I'm not aware of https://docs.unity3d.com/2017.3/Documentation/ScriptReference/ExposedReference_1.html

May be someone have guide about it or some links?

[sinful marsh]

any idea why an argumentexception only occurs when running a development build but not the editor nor the release build?

[cosmic rain]

Depends on the error and it's context.

[prime quarry]

I did a technical interview test for a unity xr position, I failed the test but one of the areas I failed in was apparently Unity-specific optimizations. Here is my repo: https://github.com/Asriela/Test but in general I dont understand what they are referring to especially in such a small test.

[mossy snow]

you might want to direct people to something specific but just checking out a few random pieces, stuff like this stands out
https://github.com/Asriela/Test/blob/main/Assets/2/2.3/Scripts/RotateCube.cs adds garbage on coroutine creation + garbage every delay time. Why start a new coroutine every time instead of creating one in OnEnable? I also don't like the way you named _rotationSpeed because that would definitely confuse me on what this script does, and hardcoding initialDelayTime is also weird

https://github.com/Asriela/Test/blob/main/Assets/5/Scripts/Utilities/Singleton.cs implementation is incorrect

https://github.com/Asriela/Test/blob/main/Assets/5/Scripts/UI/UIController.cs transform.Find is terrible. Use of GetComponent afterwards is terrible

https://github.com/Asriela/Test/tree/main/Assets/5/Resources Did you make this folder? The contents make me think it should not exist

I can't speak to the XR-specific stuff

[prime quarry]

Thank you so much I deeply appreciate these insights. Arn't these general c# optimisations, why would they say unity specific optimisation techniques?

[lean sail]

the things they listed above, coroutines and not using transform.Find is unity specific

[reef kite]

I can speak to the VR stuff personally,
`Describe how to optimise Unity performance for XR applications. (10 points)

Reduce draw calls by combining meshes, minimizing dynamic objects, using gpu instancing so identical objects like billions of rocks can share
a single draw call.

optimize lighting by baking lights into the scene for objects that don't move so its once off, use light probes for dynamic objects
to seem lit up by baked lights and generally have less real time lighting.

Don't render each eye separately , thus halving the render work.

Optimize textures and materials by compressing textures which are thus quicker to load into memory and take up less space in memory,
mipmapping so that we switch between different resolutions of textures depending on how far away they are, combining textures into a single
atlas and don't do fancy shader stuff like complex fragment shaders.

LOD and culling, models become lower res when they are further away, thus having fewer polygons and don't render stuff that's outside the camera view.

Do physics calculations at a lower rate and don't use complex colliders like box or sphere.

Lower the resolution of each rendered frame or use foveated rendering, keeping the center of the frame high res and the peripheral areas lower
res where the player eye isn't really focused.

Don't go crazy with spatialized audio , its taxing. Also lets not get wild with the amount of active audio sources either.`

All of this is spot on, but you have the collider stuff backwards:

complex colliders are mesh colliders, but other colliders like box, sphere, etc, are the ones you want to use

I think unity's order of collision simplicity is sphere -> capsule -> box -> convex mesh collider -> mesh collider

[quick owl]

Im trying to learn how to make ai, after about a hour of browsing, it seems like unity's navmesh only works on small maps/editor mode.
Im trying to make a ai for my 3d sandbox game with random terrain generation, do anybody know a video or just resources in general that could help me on this?

[reef kite]

You're probably looking at either runtime navmesh generation or finding a different nav solution that can asynchronously bake navmesh at runtime.

[prime quarry]

Thank you, I definitely typed that wrong, I meant to say use simpler colliders like box or sphere.

[reef kite]

I figured, you were 99% right so it was obvious to me it was a typo

[prime quarry]

However I didnt know that exact order so that insight still helps.

[quick owl]

navmesh ai is going to be much easier then making an AI from scratch though, right?
or does it not have that much utilities

[west lotus]

Unity’s nav mesh can be generated at runtime

[reef kite]

IMO the newest navmesh package is really great. I can even use AI agents on physically driven platforms with it.

you can indeed generate at runtime

[west lotus]

You just have to be smart about it and update a volume near the player/enemies

[glossy flume]

Guys I have a doubt. So I am making a 2d game. But now the main menu should have a zoom in effect and particles and other stuff while switching to other sections of the menu. Should I shift to world space ui or continue with screenspace canvas ui

[knotty sun]

Not a code question and do not cross post

[glossy flume]

Okay sorry

[fiery iris]

does anyone know what is the rendergraph equivalent to CommandBuffer.ClearRenderTarget? i'm just trying to clear the current camera buffer (including depth) up to that point.
solution: using cmd in an ExecutePass function with RasterGraphContext (there's also CoreUtils.ClearRenderTarget but i couldn't figure out how to pass the command buffer into it)

[sly pelican]

code 👍

[rotund perch]

Will splitting up the lines like this help me pinpoint which part of the line has a nullreferenceexception? Or will it always say the first line

[knotty sun]

yes it will help

[soft shard]

Worth testing yourself and seeing, though splitting lines will give a different line number for the error, another approach can be using debug logs or breakpoints which could give you more info as well

[knotty sun]

you have 4 things which could be null there

[rotund perch]

well when I did it it was giving the first part of the line so I just wanted to know if it always did that or if it was saying that that was the part which had a nullreferenceexception

[soft shard]

Ah yeah, then its likely the error is before the = sign

[rotund perch]

seems like maybe 3 to me

[knotty sun]

3 on the first line 1 on the second

[rotund perch]

ok thanks

[rotund perch]

NodePositions is a property of save.spriteShapes[ID]

[knotty sun]

save
spriteShapes
spriteShapes[x]
spline

[rotund perch]

spriteshapes is also a property of save

[knotty sun]

so what, it could be null

[rotund perch]

in this format

[vestal arch]

spriteShapes is a property of SaveData
save is of type SaveData, so it could either be an instance of SaveData or null

spriteShapes could also itself be null

or it could be holding nulls

why are you assigning empty arrays to them?

[rotund perch]

so I can set the lengths of them later without them being null

but not by using array.length

[vestal arch]

no, that's not how arrays work

[rotund perch]

I'm actually assigning them to a new array[length] later

[vestal arch]

yeah, so you're just assigning new arrays

[rotund perch]

yeah

not... sure why I did that actually

[vestal arch]

why not just use null to indicate it hasn't been initialized

so you can actually check for that

[rotund perch]

does not assigning to it at all also do that

[vestal arch]

or a List, if you want to dynamically resize it

yes

null is 0, interpreted as a pointer/reference

just like false is 0 interpreted as a boolean or '\0' is 0 interpreted as a char

[rotund perch]

ok now I'm really confused. It's giving an error at line 674

I'm clearly defining save at the top

[vestal arch]

oh, save.spriteShapes[0] is clearly null there then

it's never initialized

[rotund perch]

then why would it be giving me an error at line 674

[vestal arch]

that's where the expression is

[rotund perch]

so splitting the line doesn't give more precise information?

or does it treat the whole save.spriteShapes[x].NodePositions as one expression

well at least I know how to fix it now

[vestal arch]

...yeah, because that's what it is

[rotund perch]

oh I thought it would let me know which part was null

but I guess that's not how the compiler thinks of it

[odd basin]

I think they will not follow the parent if WorldPositionStays = true

[timber rampart]

i dont think that's true. They will be child of that transform you parent them to, effectively placed in the localspace of the parent

[odd basin]

Okay, let me try. I observed that behavior a while back, before fixing other glitches, but maybe falsely attributed it

[open plover]

Why doesn’t onapplicationquit work on android but works on ios

[knotty sun]

because Android does not actually close applications

[open plover]

Would onapplicationpause do a similar thing? Or in order to trigger onapplicationpause, do I need to open the game again?

[knotty sun]

yes

[open plover]

So I guess onapplicationfocus?

Is the proper way

[swift aspen]

Yes that's what the docs recommend too:
"Warning: If the user suspends your application on a mobile platform, the operating system can quit the application to free up resources. In this case, depending on the operating system, Unity might be unable to call this method. On mobile platforms, it is best practice to not rely on this method to save the state of your application. Instead, consider every loss of application focus as the exit of the application and use MonoBehaviour.OnApplicationFocus to save any data. "
https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnApplicationQuit.html

[knotty sun]

pause and/or focus depending on what you want. The Unity docs cover all of this

[open plover]

Focus is a superset of pause right? Pause + notifications etc

[stable geyser]

Afternoon all. Having a really weird problem with Unity. I'm creating a player controller and for all intents and purposes it works great. I've double checked all the backing fields and they are reporting the correct values from input. Yet, when player has Direction.X of -1, the animation associated with Idle_Left is set to use the same sprite as Idle_Right, but using FlipX = true. Yet my character only faces 3 directions: Up, Right, and Down. If I go left, it just shows the idle anim for Right. I tried on Unity 6 & Unity 2021. I even dumped ALL of my code and rewrote the files from scratch and same issue. I've never seen this before, any ideas? I've thrown my code files into one central link: https://codefile.io/f/VJD6SjcNTn

Here are the animator & animation screenshots too

Solved. Adding Renderer.FlipX was creating an additional keyframe at the end of the single frame animation.

[cold jasper]

Hello all! I'm making a trash recycling game and I want to make a prefab that spawns random food models (like it could spawn a donut one time and the next a banana, something like that), how do I do that?

[rigid island]

put the objects prefabs inside an array, get random item by generating a random index from 0 to yourarray.length , use instantiate to clone it.
eg

[SerializeField] GameObject[] myObjs
int randomIndex = Random.Range(0, myObjs.Length)
GameObject randomPrefab = myObjs[randomIndex]
var myRandomItem = Instantiate(randomPrefab, etc.```
btw this would be more for [#💻┃code-beginner](/guild/489222168727519232/channel/497874004401586176/)

[cold jasper]

Okay! I'll go resend the issue there

[rigid island]

no need to crosspost

I mean I pretty much showed you an example of how you would do it..

[cold jasper]

Okay, I'm so sorry 😭

I'll continue asking there tho, but thank you so much!

[next flicker]

I have 2 meshes that I generated through code. Is there a way to cut a hole out of the first mesh in the shape of the other mesh? (I want a "Mesh 2" shaped hole in "Mesh 1")

[latent latch]

Yes, but why not just use blender for that?

[spare dome]

They probably want some sort of Boolean effect at runtime I presume

[latent latch]

Probably not that complicated. Just get all verts and remove the second mesh triangles

[spare dome]

I'm guessing this is done by some marching cubes algorithm, but I do not know

[latent latch]

Actually still have to figure out an alg like some closest neighbor to connect edges to those verts

Eh, now that I think about it, it's probably pretty damn complicated assuming we're talking about any mesh

[quartz folio]

Preferably you don't do any cutting and you fake it with shaders. It's an XY problem

[latent latch]

yeah I'd just stencil a mask through it and call it a day

[spare dome]

this would be of use to you https://discussions.unity.com/t/boolean-subtraction-operations-on-mesh/442402

I do not know if shaders would make real holes though (As I do not use them often), but cutting the mesh would, if you do not need real holes (e.g physics objects falling through them) you could probably fake it

[oblique spoke]

Probuilder's runtime API might be interesting if you actually need to do these kind of operations

[rotund perch]

I'm trying to assign to a variable because it's null, but I'm getting a nullreferenceexception

[quartz folio]

Seems pretty clear that the element is null not the element's transform

Look at your own logs

[rotund perch]

yeah I know

but why won't it let me assign to it

here's my classes

[quartz folio]

because you're not assigning the element?

[rotund perch]

What do you mean?

the name is misleading

but I'm not trying to get the transform of the object

I just named the variable transform

[rotund perch]

Oooh

well that's confusing

because that shouldn't be null

I'm assigning to it before

[quartz folio]

I don't see where you're assigning the element

you're creating an array

but its elements will be null

[rotund perch]

Oh I guess they should be assigned here

but what would I assign to transform other than null

[quartz folio]

for (var i = 0; i < levelData.TerrainShapes.Length; i++)
    levelData.TerrainShapes[i] = new();

Populate your array's elements so they are not null.

[rotund perch]

Ah ok

wow arrays can be confusing

[quartz folio]

Imagine you want to create a shopping list. you grab a piece paper with 10 lines on it

time to go to the shops and get the 5th item on your list

but you never wrote the list so what's the 5th item, how do you buy it

Same thing here, you created an array with some space, you never wrote to it, and you tried to assign something to one of the non-existent elements

[rotund perch]

Alright everything is working properly now, thanks!

[uncut mantle]

Im not sure if this is the place for it because its sort of a shader thing but I downloaded the project of a splatoon painting tutorial and was trying to read the paint mask with getpixelbilinear, but its always just grey. It works perfectly with the first texture, which is a random texture from the project that I made readable, but the generated mask texture does not work. Does anyone know why? I tried creating the same texture from scratch in the code as a render texture and assigning it as readable, but to do getpixelbilinear I have to convert to texture2d which seems to undo that setup and results in the second uploaded image. Im not sure what else to try, I have no idea why its not reading the texture correctly, its displaying correctly in the inspector

[hollow karma]

hey does anyone else have this bugged ui element for the new input system binding action menu

the "listen" and search button are overlapped with the drop down menus

i am on unity 2021.3.40f1

[somber nacelle]

that was fixed in a patch later than the one you are on

[floral swift]

Good evening everyone I had a quick question about character customization to make sure I'm on the right path. is this the right place to ask advice?

[leaden ice]

This is the place to ask advice on your code.

[uncut mantle]

I am almost convinced that this is broken in unity. It is impossible to get the pixels on this texture in code despite it being right there in the inspector

[cosmic rain]

Did you try debugging at different stages? Or stepping through the code?

[uncut mantle]

Ive tried a ton of things, not sure what else I could do, the top code chunk turns the renderer into a viable texture2d thats visible in the inspector, but any attempt to actually get that texture2ds pixel colors results in grey. I dont know any other way to go about doing this

funnily enough, one of my friends is also stuck on this despite us working on our own projects

[cosmic rain]

Debug at every step. Or step through the code with a debugger.

[uncut mantle]

I havent used the debugger, no really sure how I would look for an error with it here, but of the billion things Ive tried, there was no inbetween, I can get a visible texture2d of what I need in the inspector but no attempt to read it will result in anything other than grey. I can get pixels of texture2ds from within the project no problem, but ones generated in the code cant be gotten, Ive gone through every parameter associated with textures, texture2ds, and rendertextures, they all check out, no combination of any kind would allow getpixel to work

[cosmic rain]

For starters, you could debug the value you get with GetPixel. As well as make sure that the object(texture) that you're accessing is the one you think.

[mossy snow]

are you sure the data is actually being copied to the cpu? The next thing to check out is whether or not you meet the requirements for that to happen with CopyTexture

[uncut mantle]

what do you mean meet the requirements of?

[mossy snow]

surely you read the doc for Graphics.CopyTexture? https://docs.unity3d.com/ScriptReference/Graphics.CopyTexture.html

[uncut mantle]

Im assuming you mean this? yes, theyre both readable

if they werent I would get an error, I got one earlier when turning it off to see if it would do anything

[mossy snow]

and the format is compatible, and the size is compatible, and anti aliasing is correct, and your api supports it etc? https://docs.unity3d.com/ScriptReference/SystemInfo-copyTextureSupport.html

[cosmic rain]

I think they should confirm what they're getting with GetPixel first, as I mentioned earlier. Perhaps the problem is not there at all.

[uncut mantle]

yes to all

[uncut mantle]

I have a mask texture thats like splatoon paint on a wall, the paint mask texture is created live during the game. I want to get that mask and use getpixel to determine if the raycast/cursor/whatever is currently over a paint spot or not.

[cosmic rain]

I never asked for these details. I provided you several things to check, but you seem to ignore the suggestions.

[uncut mantle]

Ive given you everything like 5 times dude, converting the rendertexture to texture2d with graphics.copytexture generates the image correctly atleast in the inspector, at which point any attempt to getpixel on it will provide a grey result unlike the texture2d visible in inspector. Kind of rich that youre saying Im ignoring your suggestions when youve basically not even specifically acknowledged anything Ive posted

[cosmic rain]

You're still ignoring what I suggested here:
#archived-code-general message

[uncut mantle]

https://discordapp.com/channels/489222168727519232/763495187787677697/1312651627101945936

second image literally shows the getpixel output

[cosmic rain]

No, it does not. It shows the result after copying and applying it to the other texture. And even then it only shows what you see in the scene/inspector and at different point in time. It ** does not** show what GetPixel returns.

[uncut mantle]

get pixel returns gray regardless, whether its applied per pixel or just gets the value of one pixel specifically is irrelevant, the output is grey. I dont know what specific debug menu you are trying to get me to go into but Ive already said that Ive debugged a ton of possible values like its mipmap, its readability, its format, etc.

[cosmic rain]

There's no specific debug menu. You either use logs, like you did now, or attach the debugger and step through the code/use breakpoints.

The log indicates that it actually does get a non default color, which would imply that it works. Now, whether that color matches what you're expecting or not (and why) is a different question.

[uncut mantle]

I have debug crawled through the output texture before and the entire thing is that color, its totally grey. thats why Im commenting, I swear Ive done everything and nothing has gotten it to not be this specifically. If the value changed atleast itd be something but its been this the entire time

[mossy snow]

that's the color you get for an uninitialized texture on my system

[cosmic rain]

Right. The next thing to check is the other thing that I mentioned: that it's the correct texture. You can pass a second parameter to Debug.Log such that the passed object would be selected/highlighted in the editor, when you click the log message.

[uncut mantle]

Its accessing the right variable but its refusing to highlight it. I can replace the variable with an image from the project through and it works. I tried to see if there was some execution order error but it doesnt seem like it. I tried to only grab the mask once so it couldnt get overwritten to see if that was responsible but that didnt work either. nothing is working with it, this all works insanely easily with textures in the assets but it just refuses to work with these generated maps. Ive tried to find where or if somewhere in the code specifically destroys the masks after theyre applied but I cannot find anything. I might just have to copy the theory behind the project and write it myself from scratch so I can assure that the mask textures are accessible at all times.

[cosmic rain]

If it doesn't highlight the texture you expect it to be, then perhaps it's not it. Try debugging the instance id from GetInstanceID of the texture that you're confirming and compare to the instance id in the inspector. Should be able to see it with debug mode inspector.

[rain minnow]

if you're generating the texture, is it being saved/stored correctly (since regular textures from assets folder work)?

[uncut mantle]

I closed the project but reopened it to try this and now the painting doesnt even work anymore despite me not touching it at all. So I guess I give up. I'll just throw planes everywhere with textures and raycast to see if I hit those, whatever. I heavily regret trying to learn game development, what a total waste of time. Should have stuck to blender

[cosmic rain]

You can't really make a game in blender(even though it had a sort of game engine at some point?). If you don't need a game, then perhaps blender would be better indeed.

Lastly, we don't really know what you're trying to achieve and why you decided to implement it like that, but usually, you'd rely a lot more on shaders and graphics api if you need to copy textures around. It's not very practical to copy a texture on the CPU side. Perhaps if you did it the proper way, you wouldn't have so many problems.

[rough sorrel]

Hi. What are the differences between the different "GraphicsBuffer.Target" please? Like, what's the difference between GraphicsBuffer.Target.Structured and GraphicsBuffer.Target.CopyDestination for example? And does it affect performance a lot or...?

[placid summit]

Hi if I want to draw gizmos and handle in-editor code when a particular monobehaviour is selected what is the best option? Using OnDrawGizmos in the actual monobehaviour and making it editor only code is a bit cludgy, can I have a separate editor monobehaviour that detects what is selected and draws gizmos when a certain item is active?

I think I need to use Handles instead...

[quartz folio]

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

[placid summit]

VS is totally broken for me writing editor scripts currently - the fade out unused code bug, all editor code classes are red underlined

yeah after this latest mess Rider should be the answer - but waiting for its AI line completion equivalent

what is JetBrains AI like? Does it work with Unity code?

[cosmic rain]

It seems like they abstracted the graphics buffer type and/or state with this Target property. The exact implementation would depend on the graphics pipeline.
In d3d11/12, it probably creates the corresponding views for the buffer and creates it with the corresponding flags.
If you don't specify the correct targets, you wouldn't be able to use the buffer correctly (and even if you do, the graphics API would probably throw warnings at you and tell you to fix it).

ultimately, if you don't fix them it might lead to performance degradation or even crashes, depending on the hardware.

[rough sorrel]

oh okay, thanks. So if I don't get any warnings I'm all good for now if I understood correctly

[cosmic rain]

Probably. Some warnings/errors would only be thrown when the Graphics Debug Layer is enabled, and I'm not sure how unity handles it.

[rough sorrel]

hmmm okay

thanks

[cosmic rain]

But yeah, just make sure that you're using the buffer only for the purposes of the targets that you passed into the constructor.

[vestal arch]

vscode also works 🙃

[arctic sparrow]

Hey, just curious. Is there any variant of something like spherecast or capsule cast that only counts a hit when its entire volume is obscured instead of if any of it is obscured?

[cold parrot]

A cast gives you a buffer of all candidates that could satisfy this property. You can filter that buffer yourself with additional checks.

[versed loom]

_rigidbody.position = movingPivot;
            _rigidbody.constraints = RigidbodyConstraints.FreezePosition;```
if i do this, my object isnt teleporting to the position but gets its poisition freezed, even if the .position is first

[cold parrot]

Likely rigidbody position is only applied in the next physics frame at which point it is set to be frozen

[versed loom]

thanks, didnt think about that

[reef garnet]

Is there any reason performance wise to have the collect logic on the pickups themselves using the observer pattern or just have the player/collector process said logic, more specifically something like the OnTriggerEnter Method

Like if you made mario would you have the coins detect the trigger and raise the collection event or would you give mario a collector class and have no scripts running on the coins besided animation or something, are there performance reasons to do or not to do either

[latent latch]

That's actually a good question for something I've been meaning to look into more, but most tutorials will usually just have that logic on the pickup item itself. If there's some performance implications of doing it this way, then I do not know, but it is much cleaner to manage as if I want to know the behavior of these objects I can click on them right in the scene.

[knotty sun]

Logically if you have 1 player and 1,000 coins then having the code on the player will be more performant than having it on all of the coins. So it's a matter of your design

[leaden ice]

As long as you're using callbacks instead of update or something, it won't really make a difference.

[prime moat]

Is there any way in the code to make audio play instantly when being ran by the code, im making a plane game about just staying in the air as long as possible, Each highscore value has it's own biome and music. All of the songs are made specifically for each biome however they are all just different versions of the main game songs meaning it would be great to have the Audio play instantly after being ran by the code instead of having a 0.5-1.5 second delay.

The way i do it is simple

{
    
}
else 
{ 
// Check the biome level etc etc, then trigger that biome's void which has an GameMusicSource.Play(); in it.
}

However like said, there is a 0.5-1.5s delay between the audio stopping and the next one playing, it would be extremely nice to have it play instantly without any delay so it's a smooth transition

[somber nacelle]

make sure you aren't calling AudioSource.Play multiple times on the same object. and also make sure that there is no extra silence at the beginning of the track to ensure it does start playing immediately

[prime moat]

There is no extra silence at the beginning, also i am using the same AudioSource for each level, just changing the Clip of it. So if i use different AudioSources it will be smoother, is that what you mean by saying, to not use the same object.

[somber nacelle]

no, using the same audio source is fine. i'm saying to make sure you aren't calling Play on it a whole bunch of times because that restarts the audio each time you do, which means it will appear to be not playing

[prime moat]

Oh, no im not. I just call it once each time the biome changes since it's in a simple void. Each time the Audio ends the if detects the biome and then calls the method with the AudioSource in it. And thats where i cant figure out the problem, either it's by defualt like this in unity and there has to be some pause, or im just doing something wrong.

None of the audios have any silence at the beginning.

[cosmic rain]

Is there a delay at the track end? Because if you're gonna wait for it to end, obviously nothing is gonna be playing in the meantime.

[prime moat]

No, all of them are made by me and i've especially made sure that there are no empty spaces to keep them smooth.

[somber nacelle]

then you'll likely need to show more context 🤷‍♂️

[cosmic rain]

Try adding logs to see when the previous clip ends and a new one starts.

And whether it's matching what you're hearing.

[spare dome]

Is there any way to make a script entirely read and not write so only the script itself can access and change variables inside of it? (e.g A Global script which gives and updates variables for all scripts)

[vestal arch]

private fields, public readonly properties.

[spare dome]

oh sweet, I didn't know readonly existed thanks man

[vestal arch]

oh you don't need it, you can just make them getter-only

readonly on the fields would make the script not able to modify its own values

pretty sure readonly is invalid on properties

[spare dome]

oh, yeah I want the script itself to modify its own variables

I'll look into getter-only, thanks

[vestal arch]

you can do public int X => x; for a public readonly property backed by x

oh right, you could also use an automatically-implemented property with a public getter and a private setter, that's another option

[spare dome]

Yup this option works wonders, a private setter and public getter worked, many thanks 😁

[misty drift]

Hi! I have quite general question about lists.

I do create enemies that I add to list for tracking.
Then I do remove them from lists from time to time based on events (destroyed or not visible anymore).

The issue is - if I iterate through list and something removed from it, I'm getting error (since it's C# behaviour).

Is there good approach to handle such cases? I can recreate list as "cached" and iterate through it, so even if object removed from "main" list, I still won't get error. But I feel it's not good approach either.

[spring creek]

What error are you getting? I am going to make an assumption that you are using foreach? If so, yeah that is not great. You should use a for loop, and even better a reverse for loop, then it shouldn't be an issue.

[misty drift]

I don't remember exact error (can't reproduce it as of now), I believe it's some sort of concurrent modification or smth like this (when we change list when it's iterated).

Could you clarify please how reverse loops is better than usual? I technically can remove item form beginning or from the end or in the middle. Or add item.

oh.. if I add item it will be missing in current iteration but will be ok for next, and if I remove, count will be lower, but since I iterate backwards I wont get an issue. right?

[spring creek]

Iterating backwards will avoid index issues and be more marginally performant from my understanding.

But the real issue is using for instead of foreach

[misty drift]

Yep, I understand now.
Is it possible to get en error when I get index and start iterating, but then righ away item removed from list? So for example I had 10 items, 1 get removed but I'm on 10th index trying to get item

[hexed pecan]

Well if you have 10 items then your first index would be 9

In a reverse for

[misty drift]

yep. you right

but is it possible before it handles 9 idex, number of item will change to 9

[hexed pecan]

The index changes between iterations. You know, i--

Is that what you mean with number of item

[misty drift]

nope

Okay, not-unity example (since I'm not sure how unity handles it)

We have two threads.
In one thread we iterate through list. We assume list have 1 to 10 items. Therefore index will be from 0 to 9.
In another thread we reduce number of items one by one.

it's totaly possible that while we not started iterating our number of items in list will change.
And when we will try to get item by index 9, there won't be 10th item.

[west lotus]

Thats called a race condition and should be avoided

[raven bobcat]

I got question about ml-agents here. Does anyone know what could be the reason both of my Continuous Actions and Discrete Actions alway output the same number no metter how I train it?

    public override void OnActionReceived(ActionBuffers actions)
    {
        Debug.Log("Move X:" + actions.ContinuousActions[0]);
        Debug.Log("Move Y:" +actions.ContinuousActions[1]);
        Debug.Log("Rotate:" + actions.ContinuousActions[2]);
        if (!moveLock)
        {
            controller.HorizontalMovement(actions.ContinuousActions[0], actions.ContinuousActions[1]);
        }
        controller.HorizontalRotation(actions.ContinuousActions[2]);

        //Jump
        Debug.Log("jumpAction:" + actions.DiscreteActions[0]);
        int jumpAction = actions.DiscreteActions[0];
        if (jumpAction == 0&& !jumpLock)
        {
            if (controller.JumpAction())
            {
                AddReward(-0.1f);
            }
        }
        Debug.Log("LeftHandAttack:" + actions.DiscreteActions[1]);
        //Left Hand Attack
        int LHandAction = actions.DiscreteActions[1];
    
        if (LHandAction==0)
        {
            controller.LeftHandAttack();
        }
        Debug.Log("RightHandAttack:" + actions.DiscreteActions[2]);
        //Right Hand Attack
        int RHandAction = actions.DiscreteActions[2];
        if (RHandAction == 0)
        {
            controller.RightHandAttack();
        }
        Debug.Log(".Sprint:" + actions.DiscreteActions[3]);
        //.Sprint
        int dashAction = actions.DiscreteActions[3];
        if (dashAction == 0 &&!dashLock)
        {
            controller.SprintAction();
        }
    }

[narrow sapphire]

Does anyone know what I can use as an equivalent to vector3.rotatetowards with either quaternions or float3s

quaternions fly completely over my head is there some way to like... clamp Quaternion.FromToRotation with the specified angle change I want?

[broken nest]

I'm not sure what you mean by "float3". I'm used to seeing that shader languages like HLSL and GSL to represent a Vector3. So if you have a Vector3 representing the direction toward which you'd like to rotate, then rotateTowards should work. If you want to do it with Quaternions, then I'm guessing the answer to your question probably involves Lerping between two Quaternions, but I'd like to know more about the expected behavior.

[narrow sapphire]

unity.math.float3

[wicked scroll]

maybe what you want is to slerp from your current rotation towards the target rotation? https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Quaternion.Slerp.html

[narrow sapphire]

slerp unfortunately will not work

I don't want to modulate between the two rotations by a ratio if that makes sense

I want it to move x radians / s

like rotatetowards does

[wicked scroll]

what's the problem with rotatetowards, then?

[narrow sapphire]

im in ecs

you're supposed to use unity.math

aka float3s the new vector3s

and there is unfortunately no float3.rotatetowards

[narrow sapphire]

(I think you can't burst mathf)

[wicked scroll]

oh I see, I haven't messed with that. you probably have to do some quaternion*vector math or do a bit of trig

[narrow sapphire]

so that would kind of defeat the purpose of me using ecs in this scenario anyway

[broken nest]

I think quaternion.axisAngle does what you're talking about.

[narrow sapphire]

yeah

looks perfect

thanks

[wicked scroll]

there's also these https://docs.unity3d.com/Packages/com.unity.mathematics@1.2/api/Unity.Mathematics.quaternion.RotateY.html

but yeah, basically use what the math api provides

[narrow sapphire]

well, I still need to somehow clamp so it doesn't move past where it needs to look but

definitely a start

guess i just find whatever is smallest the axisangle or quaternion between 2 quaternions

actually thats quite easy

[quick owl]

Im not sure if this is related with code but it probably is
my nav mesh agent is behaving very wierdly, it seems to pause and only continue its process upon triggering a input.key method or switching to another screen.
I have a function which pauses its pathfinding in a corutine. (IEnumerator)

[hexed pecan]

I dont think anyone can help without seeing your code

[quick owl]

ah
I was wondering if it was a niche thing with unity unrelated with code

 
private void OnTriggerEnter(Collider other)
 {
     if (other.transform == player)  // Ensure it's the player colliding
     {
         // Apply knockback force
         Vector3 knockbackDirection = (transform.position - player.position).normalized;  // Direction away from player
         m_Agent.isStopped = true;
         m_Rigidbody.isKinematic = false;
         m_Rigidbody.linearVelocity = knockbackDirection * knockbackForce;

         // Temporarily disable movement for the knockback duration
         StartCoroutine(ApplyKnockback());
     }
 }

 private IEnumerator ApplyKnockback()
 {
     isKnockedBack = true;
     
     while (m_Rigidbody.linearVelocity.magnitude > 3f) // Continue until velocity is less than 1
     {
         m_Rigidbody.linearVelocity *= 1-knockbackRes;
         m_Agent.velocity = Vector3.zero;
         m_Agent.destination = transform.position;

         yield return null; // Wait for the next frame
     }

     // Re-enable NavMeshAgent to continue movement towards the player
     m_Agent.isStopped = false;
     isKnockedBack = false;
     m_Rigidbody.isKinematic = true;
 }

[hexed pecan]

So your character has both a rigidbody (that is not kinematic) and a navmesh agent?

I'm pretty sure that combo doesn't work

They will both be trying to control your movement

[quick owl]

the rigidbody is normally kinematic
its only set to non-kinematic when the knockback process is in place

[hexed pecan]

Yeah I shoulda read more carefully lol

[quick owl]

However, the problem may very well be the IEnumerator not ending correctly
such that the isKinematic is not set back and the m_agent still being stopped
though i dont know why it is in relation with... switching into another screen.

[sturdy igloo]

Why is my line renderer have to stretch so far (eg: -34 units) to cross a gap that in reality is only 2 units apart?

[knotty sun]

your scale is obviously not what you think it is

[sturdy igloo]

Right, I looked into it and was using worldspace, but now let me start from the beginning, since this problem as been beating me up:

I want to make a line between 2 points, these points are children of 2 main objects, like so:

Drill - CableTerminalA
Storage - CableTerminalB

I've tried everything so far, positions just keep eluding me and im not sure what to do.

[knotty sun]

so what is the problem with

positions = new Vector3[2];
positions[0] = CableTerminalA.transform.position;
positions[1] = CableTerminalB.transform.position;

[sturdy igloo]

I might need to rethink this, as its a bit messy and complex at the moment, will let you know if I manage to get it working

yep, was way overcomplicating it, thank you steve

[rotund perch]

try using the quaternion.eulerAngles

oh wait what do you mean by float3s?

I mostly work in 2d but I don't get why a vector3 wouldn't be fine

[leaden ice]

That's what Quaternion.RotateTowards is for

[elder kettle]

it took me litteraly 20 minutes to realise its vertical and not horizontal 😭

[cold jasper]

Hello! Me and my friend are collaborating through GitHub and she can't open the scripts I made and neither do the ones she does work. What can we do?

[trim schooner]

read the warning there and do what it says?

[odd basin]

So a combination of WorldPositionStays = true + setting their rigidbody interpolations to none upon being stacked, fixed my issue completely. Thanks guys for helping & motivating me @timber rampart @heady iris

[cold jasper]

There aren't any errors on the scripts

I can work with them, but she can't do anything

[trim schooner]

and what does her console show?

irrelevant if there are no errors on your machine, there could be other problems stopping the compiling

[cold jasper]

Nothing

It's empty

[trim schooner]

and what is selected (where) to show this inspector? Something from the scene? or the project window?

[cold jasper]

From the project window

[trim schooner]

She's either got compile errors, or not pulled the project fully.. or something. She needs to come in here and get help, it's a waste of time going through a third party

[heady iris]

If disabling interpolation fixed it, then you should try directly setting the rigidbody's position and rotation. That should allow you to leave interpolation on.

Just tell it about its new position + rotation at the same time that you mess with the transform

[rotund perch]

I'm getting IOException: Sharing violation on path on this. What does that mean?

[rigid island]

I think unlike WriteAllText CreateTexts opens the file and you have to manually dispose it with using statements so its keeping the file open and writealltext can't write to same open file

[rotund perch]

do I even have to create a new file if it doesn't exist?

[rigid island]

WriteAllText cretes one for you

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

Creates a new file, write the contents to the file, and then closes the file. If the target file already exists, it is truncated and overwritten.

[rotund perch]

Oh ok I'll remove the creation line then

[rigid island]

ya try that out. it might just fix the issue

[knotty sun]

you really should use Path.Combine rather than building path strings

[rotund perch]

What’s that do?

[knotty sun]

it makes path strings correctly

which you would know if you went and read the docs

[rotund perch]

sorry I was in the car while making that message

[simple egret]

You also don't need to check if the directory exists before creating it. CreateDirectory() does nothing if it already exists

[rotund perch]

oh.

that's nice

[swift falcon]

im trying to make multipalyer with photon and i need to put "if (view.IsMine)" some where so that the players dont meve each other does anyone know where to place this

@fluid parcel

or anyone

[spare dome]

#archived-networking

[swift falcon]

thanks

[hushed venture]

I have a project, based on a grid of cubes, that change state - whether you can walk through them or not, Occasionally I am able to walk through a cube that visually seems as though I should not be able to walk through.
Grid manager: https://pastebin.com/F8MbU4mf
Player movement: https://pastebin.com/VkeTRcB1

[slate vessel]

So added lives to my game and every time u die u get 1 life off with a picture of a pingiun getting of the screen. I made a game data but the lives go down it but the pictures always go back to 3 even when i restart

[knotty sun]

great, and you are posting in a code channel why?

[slate vessel]

bcs i need help with my code

[knotty sun]

then may be share the !code

[tawny elk]

Posting code

📃 Large Code Blocks

Use 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 format as C#, add cs to the first line:
```cs
// Your code here
```
Add a comment with a line number if there is an error message.

[narrow sapphire]

thats unityengine not unity.math

[narrow sapphire]

like i said... because vector3s aren't burstable

[slate vessel]

nvm i found how to do it

[rotund perch]

Burst…?

[robust dome]

that was fast lol

[rigid island]

Burst is a compiler that you can use with Unity's job system to create code that enhances and improves your application's performance. It translates your code from IL/.NET bytecode to optimized native CPU code that uses the LLVM compiler.
https://docs.unity3d.com/Packages/com.unity.burst@1.8/manual/index.html

[hushed venture]

Would I need to provide anything else to get any help with this issue?

[slate vessel]

https://hastebin.com/share/vojimigaji.csharp

Why do the pics of my lives not reset when i restart my lives?

[rotund perch]

Oh cool so like a super optimized type of compiler

[rigid island]

pretty much

[rigid island]

Restart where?

[slate vessel]

190 and 195

[rigid island]

currentLives = maxLives;?

[slate vessel]

my max lives are set to 3

and when i completly die i set my currentlives to max lives

[rigid island]

where do you reset the gui though

[slate vessel]

to make it 3 agian

oh

never

u know how to do that?

[rigid island]

might wanna do thaat lol

[slate vessel]

or is there documatetion link?

[rigid island]

set all the colors in a loop to alpha 1 or 100%

personally i would enable disable UI elements inside a layout group

[leaden ice]

Not sure if it's the best way but you could do this:

• Find the angle (in radians) between the two quaternions with https://docs.unity3d.com/Packages/com.unity.mathematics@1.3/api/Unity.Mathematics.math.angle.html
• Figure out what percentage of that angle your desired amount of rotation is. For example 50 degrees is 50% of 100. (don't forget it's in radians)
• Use https://docs.unity3d.com/Packages/com.unity.mathematics@1.3/api/Unity.Mathematics.math.slerp.html#Unity_Mathematics_math_slerp_Unity_Mathematics_quaternion_Unity_Mathematics_quaternion_System_Single_ to create the new quaternion based on the percentage you calculated

[slate vessel]

what is the color code for not transparent?

[rigid island]

look at what ur doing in the code to make it transparent lol just do the opposite

color in unity goes 0-1

[leaden ice]

your code is only ever setting the alpha to 0

[narrow sapphire]

yeah that could work thanks

compute shaderable as well

[leaden ice]

Btw this:

    public void UpdateGui()
    {
        if (currentLives <= 2)
        {
            Color tempColor = Pinguin3.color;
            tempColor.a = 0f; // Set alpha to 0 (fully transparent)
            Pinguin3.color = tempColor;
        }
        if (currentLives <= 1)
        {
            Color tempColor = Pinguin2.color;
            tempColor.a = 0f; // Set alpha to 0 (fully transparent)
            Pinguin2.color = tempColor;
        }
        if (currentLives == 0)
        {
            Color tempColor = Pinguin1.color;
            tempColor.a = 0f; // Set alpha to 0 (fully transparent)

        }
    }
}

Is not really sustainable. You should get used to using arrays and loops instead of naming variables with numbers like this. It's going to be a nightmare to maintain this.

[slate vessel]

            Color tempColor = Pinguin3.color;
            tempColor.a = 1f; // Set alpha to 0 (fully transparent)
            Pinguin3.color = tempColor;
                 Color tempColor = Pinguin2.color;
            tempColor.a = 1f; // Set alpha to 0 (fully transparent)
            Pinguin2.color = tempColor;

            Color tempColor = Pinguin1.color;
            tempColor.a = 1f; // Set alpha to 0 (fully transparent)
            Pinguin1.color = tempColor;

[leaden ice]

Especially because now you need to write the code that sets things back to 1 alpha or whatever

[slate vessel]

so just like this?

[leaden ice]

Yeah see how you're writing another 16 lines of code or whjatever

Use a loop and an array

// Set alpha to 0 (fully transparent)
That's not right

fix the comments

[slate vessel]

i just copied

[leaden ice]

god forbid your player could ever get a 4th heart container

[slate vessel]

the comments need to be removed

[leaden ice]

suddenly all your code needs to be rewritten

This is an excellent opportunity to learn about loops and arrays or lists

[slate vessel]

never learned a array at school in c# only in phyton

[rigid island]

arrays are pretty much similiar across the board

usually something that holds more than 1 value. like a collection

[rotund perch]

I only know arrays not lists

or dictionaries or collections

[leaden ice]

they are similar to python lists

[rigid island]

lists in c# are just arrays that can be resized

[rotund perch]

wait so why have I been using arrays for so long

[leaden ice]

arrays are more efficient if you don't need to resize them

[rotund perch]

the amount of times I've had to make a new array with the new length I want then iterate over the old list into the new one then assign the new variables

How do you even define a list

also do they work with foreach

[rigid island]

thats basically what list is doing

[rotund perch]

oh wait that's a google question

[rigid island]

they work the same way as array except you can add/remove elements.

[leaden ice]

oh gosh yes you should be using lists for that

[rotund perch]

Not sure if I want to go back over all my old arrays to see which ones could be rewritten as lists

but I'll definitely keep it in mind

[narrow sapphire]

I mean you could use an array for this anyway

also can't you just do penguin.color.a = 1f why do you need a temp variable

[leaden ice]

you cannot

[narrow sapphire]

I mean it works fine for me

or is penguin a component

in which case wth

[heady iris]

It's a funny intersection of two things

• Color is a struct. You hold onto a Color directly, just like an int or a float
• SpriteRenderer.color is a property. It looks like a field, but it actually calls a method that returns the color

Modifying the returned value would do nothing. It's not the same Color that the sprite renderer has.

[narrow sapphire]

ok so he is accessing a component

odd way to do it tbh

[leaden ice]

I prefer to use extension functions in this style: https://github.com/jschiff/unity-extensions/blob/338d306ba17f86efa7beea1618ef486132e42720/Runtime/Extensions/VectorExtensions.cs#L49

So then I can write: penguin.color = penguin.color.WithA(0);

[narrow sapphire]

I mean i'd just make penguin a separate class and do it in a color property

unless this game is like a 2 hour project kind of thing

[leaden ice]

Well I think in this case, it's a UnityEngine.UI.Image

but yeah even a helper function would go a long way here.

[narrow sapphire]

yeah but i mean i assume the game isn't literally just about a picture of a penguin that does nothing but change colour

[vestal geode]

What generally could be affecting script compile times
This U 6.0.25f1 project is fairly barebones and it seems like script compilation takes either 3 seconds or 60 and nothing in between regardless of the change

[heady iris]

There is a package that shows all of the assemblies that are getting compiled

https://github.com/needle-tools/compilation-visualizer

You could look at the editor logs and see if there's anything really funny in there

[lucid brook]

I just installed unity again after some time and my visual studio is graying out the unity functions because it thinks they are unused. how do I turn that off?

[heady iris]

I bet Visual Studio is missing its Unity-specific features

so it doesn't understand that Unity messages exist

!vs

[tawny elk]

Visual Studio guide

If your IDE is not underlining errors in red or autocompleting code,
please configure it using the link below:

• Visual Studio (Installed via Unity Hub)
• Visual Studio (Installed manually)

[spare dome]

if the function works, then it is the VS bug going around thinking everything is unused

[heady iris]

Or is this a new issue?

I remember someone else complaining about it earlier today

[spare dome]

VS in particular has been doing this for people recently

I do not know how long it has been going for

[latent latch]

People been saying you need the .net desktop platform development kit for some reason

https://discussions.unity.com/t/visual-studio-break-all-references/1506520/24
Maybe related

[lucid brook]

I just installed unity and visual studio code again after like a year so I wouldn't know. The unity functions do work, the editor just thinks they are unused.

[spare dome]

yup its just the VS bug then, I don't know how to get rid of it 🤷‍♂️

[somber nacelle]

there is a related bug in some of the newer visual studio versions
https://developercommunity.visualstudio.com/t/Private-Unity-messages-incorrectly-marke/10779025

[heady iris]

ah, okay, so it is just a recent bug

I didn't notice because I'm using Rider 😎

[warm sage]

im making a game where you drive a car on a road, i want the game to stop if the car is even slightly off the road so is there a way to script a polygon collider around my road??

[leaden ice]

how are you making the road

[warm sage]

splines

[leaden ice]

Use the spline to generate the collider then as well

[warm sage]

i just learned how to make a road out of splines

[warm sage]

how do i do that exactly?

[leaden ice]

Sample the spline every n units, and offset according to the spline's tangent and rotation to get the points for the collider

[rustic ember]

I'm curious about this. What happens to overlapping points?

Here's what I mean

[leaden ice]

That's up to you.

it depends on what the desired gameplay is

But that's a nice illustration of what I meant by using the spline to generate the points, thanks

[rustic ember]

I ask because I recently made a "path gun". The geometry of my mesh would get very weird in thos places. I didn't really know how to tackle the issue

[leaden ice]

I think most likely it's fine to just ignore the fact they overlap. The collider will do the right thing anyway

But it depends on the specifics of the game

[rustic ember]

That's good to know. So it's only a problem when drawing a mesh

[viscid kite]

question, encountering this and unsure what to do

i will append i'm using Unity 6

[leaden ice]

If you mouse over the word Random in your Random.Range line what type is it referring to?

It should say if it's e.g. UnityEngine.Random or something else.

I.e. see here it's telling me it's a class in UnityEngine

[viscid kite]

so at least the using statement works

[rigid island]

remove new

Random is a static class, no need to new()

[viscid kite]

ah that fixed the issue

i dunno why i did that

oh right regular C# random was what was in my mind when i tried to use unity random

[rigid island]

yup that one you def new() an instance

[leaden ice]

Ah yeah... the other screenshot conveniently omitted that haha

The error message was a bit confusing though...

[low pecan]

Can I not change the values of a game object I get from the instantiate function?

[leaden ice]

There is no Init function on GameObject

What is the type of the _fruitObject variable?

[low pecan]

I made the init function in the game objects class

[leaden ice]

no you didn't

that's not a GameObject

that's some custom component you wrote

What is the type of the _fruitObject variable

[low pecan]

the monobehavior i put on the prefab?

Fruit which is the name of the script I put on a prefab

[leaden ice]

Please answer this question.
Instantiate returns the same type that you pass into it

so you have Fruit _fruitObject; somewhere?

[low pecan]

yes

[leaden ice]

ok so

that should be fine then

Are you getting an error or something?

What's the issue?

[low pecan]

i was calling the wrong function my bad

thank you for the help

[leaden ice]

Again though, you would be calling the method on the component, not on the GameObject here

[low pecan]

i just never called the SpawnFruit function

[stoic sluice]

Is there a way to just mark parts of a nav mesh as unwalkable?

[rigid island]

ofcourse

https://docs.unity3d.com/Packages/com.unity.ai.navigation@2.0/manual/NavMeshModifierVolume.html

[stoic sluice]

Cheers, pursuing that now

[rigid island]

you could potentially also use navmesh obstacle

[bitter quarry]

in the inspector view for a Quaternion, why cant i set the x rotation above 90 nor below 270? and when x is 90, why cant i set z at all? the property is just a simple public Quaternion rotation with nothing on the script running while in the editor

[latent latch]

https://i.imgur.com/S4rZr0V.png

[bitter quarry]

then why is it just fine when modifying it on a Transform?

[latent latch]

Eulers

[leaden ice]

If you can't modify it in the inspector that's usually a sign you have some OnValidate code or something overweriting it

[leaden ice]

The inspector for a Quaternion shows euler angles

[latent latch]

Right, the transform in the inspector is done in eulers, right? Cause I run into gimble with that

[bitter quarry]

i dont have any OnValidates defined in any of my scripts

[leaden ice]

Or an ExecuteInEditMode e.g.

[bitter quarry]

neither that

[leaden ice]

Those are the only reasons I can think of.

Show code?

If you make a new field does that new field work ok?

Also are you using any plugins/packages

[bitter quarry]

its on any Quaternion everywhere

[leaden ice]

Sounds like probably a plugin or something..