archived-code-general

[leaden ice]

the most accurate way to do this would be to use multiple physics scenes

if this is like a long sequence where you're on a moving platform, you might want to consider moving the rest of the world around the platform instead

[hard viper]

I think part of it is that I don't understand the difference between moveposition and changing transform position

I thought moveposition would just allow me to move my rigidbody without interfering with physics calculations.

but for my kinematic rigidbody, its path between points A and B should be locked in. it knows it's going from A to B, and no forces are going to stop it unless it is told to go somewhere else

[leaden ice]

MovePosition is basically a way to teleport a kinematic rigidbody but realistically push dynamic bodies out of its way in the process

[hard viper]

that sounds very important for what I need then. To not change from MovePosition

[heady iris]

the important part about MovePosition is that the rigidbody isn't getting moved by someone else

it is response for changing the object's position

[leaden ice]

so if your player is dynamic, it will indeed be pused by the platform

but "move in its reference frame" is a very different question

[hard viper]

because my platform can be a solid block that also pushes dynamic rigidbodies from the side

but I want my player to (if they land on the platform) to move along with it

and my player's physics revolve around no friction

I want this to kind of work like mario, where you can have a bunch of goombas walking on different lifts or whatever, and they are all moving along with their lifts

a fixed joint brings me almost to what I want. player can be on platform, and if he hits a wall while on platform, the wall will take priority and push him.

I just don't know what I need to do to achieve this, as it isn't realistic for me to make multiple physics scenes for this

[heady iris]

So what are you currently doing, and in what way is it malfunctioning?

[hard viper]

In fixedupdate, platform kinematic rigidbody.MovePosition(nextPosition).
If player (dynamic rigidbody) is making contact and is on top of platform, I want player to move with platform.
I am trying to set playertransform.SetParent(platform), but then player does not move with platform.

if I use platform.transform.position = new position, it would work, but it sounds like the platform would not accurately push other dynamic rigidbodies around

[leaden ice]

the transform hierarchy has no effet on rigidbody motion

[heady iris]

Perhaps the platform can advertise its velocity, and then the player can add that velocity to its own MovePosition call

[leaden ice]

If the player is moving via normal rigidbody dynamic physics, then presumably the friction from the platform will just drag the player along

and you shouldn't need anything special

maybe a custom physicmaterial to customize the friction level

You can test this - just drop a plain rigidbody cube on the moving platform

it should move along with it just fine

I think this comes down to how your player movement script works

[hard viper]

My player has no friction when moving, and the movement is centered around physics. any change to friction would cause player movement to be different between platform and lift

[leaden ice]

My player has no friction when moving
Well yeah this will be a problem

In real life, friction is the thing that keeps you on a moving surface

[heady iris]

This would still work, even with no friction.

[hard viper]

I'm going to try fen's idea first, since it sounds promising.

[heady iris]

It might misbehave if the platform is moving up or down

it might chuck you into the air

but you could always limit it to only apply the velocity that's tangential to the surface

so, Vector3.ProjectOnPlane(vel, platformNormal);

I'm not sure when Rigidbody.velocity actually updates, so you might want to have the platform just explicitly tell you how fast it's moving

[hard viper]

OnConnectToPlatform: playerRb.velocity += platformRB.velocity;
While connected: playervelocity += (platform velocity) - (last frame platform velocity)
When disconnected subtract

[heady iris]

(and if it's kinematic, it probably won't even have a velocity at all)

oh right, my first idea would've turned it into a railgun

adding velocity every frame lol

[hard viper]

I would need to separately program it to have a velociy in the first place

[heady iris]

yeah, that sounds reasonable

[hard viper]

I think this is doable, but more complex than all the tutorials which just change transform and parent it

since I'm doing a delta, I probably just need to log transform.position, maybe

this just feels like a super common issue, and struggling with it seems strange

[heady iris]

it is a very common concept, yes

[hard viper]

because it is so common

[heady iris]

although your zero-friction situation is different

as Praetor said, moving platforms don't work with no friction

they just leave you behind

If the platform isn't constantly changing velocity, it'll be relatively easy to get this right

[hard viper]

in real world. but most tutorials don't use friction

[heady iris]

they do implicitly, though

if you're using a rigidbody, then you have friction

[hard viper]

the tutorials do not rely on friction to work, is what I mean

[naive swallow]

Does a NavMeshAgent's obstacle avoidance not take into account layer-based collision settings? I've set my agents to not collide with their own layer but they're still stopping on each other. Is there a way I can exclude other agents from obstacle avoidance?

[heady iris]

I don't think they care about physics layers.

Agents can ignore agents with a lower priority level, but I don't think you can get mutual ignorance that way

[naive swallow]

Hm, I might be able to make it so there's a hierarchy of them that each ignore the one in front, since they're supposed to form a sort of "conga line" anyway

Problem I'm having is if the front one suddenly turns around they all walk directly into his face and all get stuck on each other

[hard viper]

Q: Does MovePosition work properly on dynamic rigidbodies?

[warm stratus]

Hey, I have a question. I have to save data in my game. I need to save the created levels, the downloaded levels. Is it very good to use SqLite?

[lean sail]

You could use pretty much anything, although sqlite would probably require more setup compared to something like json or binary

[warm stratus]

Thanks for you answer! I think SqLite is good compared to have lots of binary files to store each levels is it right?

[lean sail]

🤷‍♂️ I honestly havent used real database stuff in a long time. If my memory is correct, itll just be slower but I guess you could have more "organization". You could also have the exact same data in any other format

[heady iris]

a database doesn't seem appropriate here

you've got a bunch of separate levels

[lean sail]

Yea I'm personally unsure what you would use for columns and rows etc

[heady iris]

a relational database would be useful for recording relationships between different entities in the level, I guess

[warm stratus]

Vector3.LerpUnclamped I guess

[heady iris]

yes, that's what the unclamped variant is for

[warm stratus]

@waxen light

[scarlet kindle]

I'm adding a 3D object to my Unity 2D project with URP. I want to show this dice on top of the UI canvas elements. Would the best way be to just add a new camera for the 3D object separately?

yea seems to work with a new cam

and remove new layer for dice from culling mask of UI camera

[hard viper]

I think I figured out the reference frame issue

in LateUpdate(), we move the transform of the child by the displacement of the parent transform since last frame

[dreamy elm]

Hello!
So I am using Netcode and also a random generated maze. The problem is that when I am doing those two things together, it creates a random generated maze for each of the players which make them have different mazes...
Is there a way to make it so I will only create the maze at the host and then build it at the other users too?
(Like copying the parent object of the maze to the others or make it visible for them too)

[hexed sleet]

Hello everyone!
I have an issue with prefab duplication

I have two prefabs, Bullet and PickupBullet, whenever the bullet collides with ANYTHING that has a collider, it will delete itself then instantiate the PickupBullet prefab

What I am trying to do is make the player shoot a bullet, and when the bullet hits anything in the world it will delete itself and spawn a pickup prefab at the location where the bullet hit

However, everytime the bullet collides with an object, the PickupBullet will duplicate twice instead of once.

Below is a video example and links to the script itself for both the bullet and pickupbullet

https://pastebin.com/tWntJpR4
https://pastebin.com/K9CXqC4s

[rigid island]

show bullet prefab

[rigid island]

this is the whole object? no child objects ?

[hexed sleet]

Yep, the bullet only has the collision and rigid body

The same goes for the BulletPickup prefab

[latent latch]

perhaps colliding withmultiple colliders?

[proven plume]

I was about to ask how the wall and floor are built

[latent latch]

Maybe just add in a member bool and flip it

[hexed sleet]

I already tried adding a delay in instantiating the pickup bullet prefab as I believed that both the Bullet and Pickup collided with each other caused it to do it twice

[proven plume]

have you tried putting the pickup and bullet on different layers that do not collide with one another?

[hexed sleet]

Oh it just has a collider, however the ground has a Ground layer

ooh maybe

Yeah it did not work, I created a Bullet Layer and a Pickup Layer however the issue still occurs

[rigid island]

Layer itself doesn't do much

[scarlet kindle]

is there anything similar to a Scroll Rect for non UI space?

I want to be able to essentially zoom the camera with the scroll wheel to be synchronized with my UI scroll rect

I'm treating a UI map as a "board" with a mix of 2d and 3d objects

[latent latch]

Eh, well the scroll rect is a normalized value from 0 - 1

so normalize a distance relating to that

[scarlet kindle]

hmm ok

[somber nebula]

        double roundedCandy = Math.Round(candy);
        candyText.text = "Candy: " + roundedCandy;```
Making an incremental game, the "candy" variable which is the currency being added to over time is rounding up when it reaches #.5 and I can't have that because it's not precise. I've tried using the Math.Round, Math.Floor, Math.Ceiling, and Math.Abs functions yet nothing changes

[scarlet kindle]

i wonder if FOV would work

[somber nebula]

Does anyone know how I can get this to actually work lol

[scarlet kindle]

gonna try that

[spring creek]

Just make a bool called "pickupSpawned" or something. Check if it is false before instantiating, and after doing so set it true

Edit: something like this actually:

if (pickupSpawned) return;

instantiate()

pickupSpawned = true;

[scarlet kindle]

maybe it's already rounded before you mess with it? did ou console log the output

[hexed sleet]

ill give that a go, ill let you know if it works 🙇‍♂️

[somber nebula]

The candy text on screen shows the rounded text, the candy variable is in the inspector, so I've been looking at those two and it's 100% rounding wrong

I can't buy something that costs 15 while the text says 15 until the actual variable reaches 15, since it's at 14.5 (edited 4 times because my brain's melting)

[scarlet kindle]

So you checked the value on the first line and it says candy = 14.5?

[hexed sleet]

does this look good or have I placed it in the wrong place?

[somber nebula]

The candy variable in the inspector says 14.5 while the physical text I'm displaying it on says 15, because it's rounding in the string

When it's 14-15 it should say 14, I need it to round down

I've tried Math.Floor but it refuses to do anything

[scarlet kindle]

did you inspect roundedCandy to make sure it's the value it's supposed to be

i would check with debugger, step through lines to check values

[somber nebula]

It's the same as the text, I had it as candy.ToString() before this and it was rounding the same way

[somber nebula]

The inspector changes in realtime lol, I know 100% that it's rounding to the closest whole number

[scarlet kindle]

is it possible the TMP textfield is getting overwritten by another script or something afterword?

cuz your code looks fine

[somber nebula]

No, so I'm confused

Does it being a double have anything to do with it?

[spring creek]

You don't need the curly braces after the if statement.
The body of the statement is the "return;" part

But yeah, in terms of order, that is fine

[somber nebula]

Apparently the string is saying 4, candy is at "3.64187975844834", and roundedCandy is at 3. So the issue is in putting the number to the string

[orchid bane]

Can your array be modified if you pass it to a method?

[scarlet kindle]

oh whoops change type of roundedCandy to int should fix it

Math.Round returns an int

also, you can just use var in c#, it makes things like this trivial 🙂

[somber nebula]

        int roundedCandy = (int)Math.Floor(candy);
        candyText.text = "Candy: " + roundedCandy;``` Changed it to this and it's still refusing

Had to put the (int) because the regular candy value is a double

[orchid bane]

Mate you are using floor which rounds it down

[scarlet kindle]

Sorry I was wrong, it returns a double

[orchid bane]

Can it be the issue?

[hexed sleet]

Unfortunely, it did not work

[somber nebula]

I want it to be rounded down, it's currently rounding to the closest whole number

[spring creek]

Can you show the code you have now?

Actually, maybe set the bool BEFORE instantiating

[orchid bane]

It's rounded down

[hexed sleet]

ill do that then

[somber nebula]

The string that roundedCandy is being displayed to says 4, yet roundedCandy is at 3

The string is rounding it somehow and ignoring the Math.Floor roundedCandy value

[proven plume]

@hexed sleet your original code should have been fine. If you are getting two, is it possible there are two bullets on top of one another and each is spawning it's own pickup?

[hexed sleet]

I think I may have found the issue, whenever I click right mouse button it creates a Bullet clone, however that clone has TWO bullet collision scripts for some odd reason

However when I check the original bullet prefab it only have one script attached

Not sure if thats the problem but let me try getting a snapshot

[proven plume]

That explains the duplication. Where do you instantiate the bullet?

[orchid bane]

It can't be right. Something is wrong with your logic

[somber nebula]

    public void Update()
    {
        roundedCandy = Math.Floor(candy);
        candyText.text = "Candy: " + roundedCandy.ToString();
        cpsText.text = "CPS: " + totalCPS;
        soulText.text = "Souls: " + souls;

        candy += totalCPS * Time.deltaTime;
    }```

[hexed sleet]

I instantiate the pickup bullet in the bullet prefab

(aka BulletCollision script for the red bullet, PickupPrefab for the other)

[somber nebula]

The program's going rogue, refuses to round down

[orchid bane]

Try debug.logging candy text right after you assigned it

[hexed sleet]

OH I DID IT

[proven plume]

I meant where is the bullet itself being instantiated?

oh, great!

[hexed sleet]

Ill explain my issue, I had a seperate player script which I didnt add because I believed it did not affect it

        //Attach a script to the bullet to handle collision
        bullet.AddComponent<BulletCollision>();

this line added another bullet collision script to the Bullet prefab

however I forgot to remove it due to previous issues I had which I thought that adding that would solve it, which it did, however it caused another issue

thank you all for your help 👍

[somber nebula]

Yeah, okay, Debug.Log(candyText.text) is passing the correct rounded value, but the actual text isn't

Why Unity why lol

[orchid bane]

Obviously because something else changes the text

[somber nebula]

The only other thing that even touches the candyText.text variable is my options menu, and disabling that has the same exact result

[orchid bane]

Try removing the text variable and seeing where you get errors

[proven plume]

That variable is part of TMP so that wouldn't be possible. And if another script had a reference to the TMP element, that wouldn't show up as an error

@somber nebula is the text incorrect in the TMP component in the inspector?

[somber nebula]

No external script errors

[somber nebula]

Text string variable in the TMP component is the same as the text in-game

[orchid bane]

Try debugging flooring and assigning in on debug.log

[proven plume]

It would be fastest to tell Unity to include the TMP project int eh VS solution and throw a breakpoint in the text property

If it's being called from multiple places you'd see it immediately

[somber nebula]

For the first time I think I'm just gonna give up on it lol, I'm very fairly confident this isn't a problem with anything I've done and I can't be bothered to go search through TMPro code to double check / find out what could be wrong on that side

But thank you all for helping

[latent latch]

You could just cast to a int too

if you want to round down

[somber nebula]

Just tried, does what it should in the debug.log but the text still doesn't change. Gotta be a problem with TMPro

Or maybe I just need to restart Unity for some odd reason, either way not too big of a deal

[orchid bane]

Mate, there are no any such bugs in TMPro

TMPro is worked with by numerous people

If you want to, we can have a quick call and I will try to help you

[somber nebula]

Like I said I'm not too worried about it, but thanks anyway

[orchid bane]

Like it's 100% in your code

But okay whatever

[desert mason]

Ay yall, is learning Unity's Input System worth it?

[rigid island]

Absolutely

[desert mason]

It looks complicated tho, idk how it can be better compared to the old one

[rigid island]

When you want seamless transition from different input devices with ease , rebind etc.

[spring creek]

It IS more complicated for sure (while learning it). But it is also vastly superior imo. Once you get it, it's not hard to use. If you understand events work or how SendMessage works, you'll be fine. It's flexible, so you can use it multiple ways (which IS part of what confuses people unfortunately. Knowing which method to use. I like the unity events or c# events method)

[oblique spoke]

You can upgrade to the new input backend with the shortcut APIs like Keyboard.current and Gamepad.current, but you'll miss out on the rebinding stuff of the action mapping system.

Probably less important on the desktop, but I would recommend the new input system on mobile due to some reported input latency issues there.

[spring creek]

That's how I eased into it. Doing that for some things and incrementally adding in event based stuff was just fine.

[wispy wolf]

Anyone know what the formula is that Unity uses to apply friction to a body?

[rigid island]

Maybe https://gameworksdocs.nvidia.com/PhysX/4.1/documentation/physxguide/Manual/RigidBodyDynamics.html#friction-and-restitution

[swift falcon]

you should probably search for PhysX answers instead since unity uses PhysX

[swift falcon]

can somebody help me? im trying to enable a game object by clicking the key tab, no errors in the output but doesnt work, ```cs
using UnityEngine;
using UnityEngine.InputSystem;

public class LeaderboardEn : MonoBehaviour
{
public GameObject objectToToggle;

private bool isTabPressed = false;

private void Update()
{
    if (Keyboard.current.tabKey.wasPressedThisFrame)
    {
        isTabPressed = true;
        if (objectToToggle != null)
        {
            objectToToggle.SetActive(!objectToToggle.activeSelf);
        }
    }
    if (Keyboard.current.tabKey.wasReleasedThisFrame)
    {
        isTabPressed = false;
    }
    if (!isTabPressed && objectToToggle != null)
    {
        objectToToggle.SetActive(false);
    }
}

}

[crisp minnow]

I'm keeping a list of game objects as they enter / exit a trigger 2d collider. some of them might be destroyed, and while enumerating i'm getting the collection was modified, invalid op. How to best guard against this?

System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
  at System.Collections.Generic.List`1+Enumerator[T].MoveNextRare () [0x00013] in <130809ae6f984869a6663c878f16e3f3>:0 
  at System.Collections.Generic.List`1+Enumerator[T].MoveNext () [0x0004a] in <130809ae6f984869a6663c878f16e3f3>:0  

[quartz folio]

https://unity.huh.how/runtime-exceptions/invalidoperationexception/collection-was-modified

[crisp minnow]

I'm neither removing nor adding them during enumeration. The objects may destroy themselves

[quartz folio]

Show the full stacktrace

[crisp minnow]

InvalidOperationException: Collection was modified; enumeration operation may not execute.
System.Collections.Generic.List`1+Enumerator[T].MoveNextRare () (at <130809ae6f984869a6663c878f16e3f3>:0)
System.Collections.Generic.List`1+Enumerator[T].MoveNext () (at <130809ae6f984869a6663c878f16e3f3>:0)
Behaviours.Gameplay.Meridians.MeridianOpener.AbsorbPowerFromQiStats (System.Collections.Generic.List`1[T] qiClusters) (at Assets/Scripts/Behaviours/Gameplay/Meridians/MeridianOpener.cs:28)
Behaviours.Gameplay.Meridians.MeridianController.OnBreathCompleted () (at Assets/Scripts/Behaviours/Gameplay/Meridians/MeridianController.cs:65)
Behaviours.Gameplay.Cultivation.CultivatorBreath.OnBreathCompleted () (at Assets/Scripts/Behaviours/Gameplay/Cultivation/CultivatorBreath.cs:33)
Behaviours.Gameplay.Cultivation.CultivatorBreath.Update () (at Assets/Scripts/Behaviours/Gameplay/Cultivation/CultivatorBreath.cs:27)

[quartz folio]

What is MeridianOpener.cs:28

[crisp minnow]

It enumerates on a list of objects and absorbs their power

[quartz folio]

Can you show the !code

[tawny elk]

Posting code

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

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

[crisp minnow]

That in addition to other factors can cause the object to run out of power and go poof, but it's not guaranteed that the absorber on its own will do it

        {
            long allowedMaxAbsorption = Math.Min(AbsorptionPerBreath, meridianController.PowerRequired);
            
            foreach (var qiCluster in qiClusters)
            {
                var absorbed = Math.Min(qiCluster.Power, allowedMaxAbsorption);
                qiCluster.SubtractPower(absorbed);
                AbsorbPower(absorbed);
            }
        }

The call to subtract power can trigger a deletion of the object

[quartz folio]

What do you do in SubtractPower and AbsorbPower?

[quartz folio]

Does that remove it from the list?

[crisp minnow]

qiCluster will call Destroy(gameObject) on itself if it runs out of power

[quartz folio]

That doesn't matter, it's not modifying the list

[crisp minnow]

The list is sourced from the BreathBehaviour, it keeps track of gameobjects as they enter and exit

[quartz folio]

and is that list being updated when you destroy the object?

[crisp minnow]

So this function gets called by MeridianOpener (implements BreathBehaviour) and passes it in

If I'm not mistaken an object destruction on a trigger 2d will call the OnExit? I'd guess so since that would be the only way for the list to change

I could cache the list and check activeSelf on each object maybe? Not sure how to best cache the list though

        internal void AbsorbPowerFromQiStats(List<QiCluster> qiClusters)
        {
            long allowedMaxAbsorption = Math.Min(AbsorptionPerBreath, meridianController.PowerRequired);

            var cachedClusters = qiClusters;
            foreach (var qiCluster in cachedClusters)
            {
                var absorbed = Math.Min(qiCluster.Power, allowedMaxAbsorption);
                qiCluster.SubtractPower(absorbed);
                AbsorbPower(absorbed);
            }
        }

Maybe that?

[quartz folio]

That's the same list, it's a reference type

[crisp minnow]

How can I sever the connection?

[quaint rock]

would have to copy all the items to the new list

[hard viper]

yeah, it’s not really severing. it’s making a whole new thing and pointing to it

[crisp minnow]

Cause what's happening. Ithink is Subtract sets it to zero, triggers destruction, triggers onExit, removes the element from that list and it scaffolds back down into the same method, which goes to do another enumeration

[hard viper]

that’s how reference types work

[quartz folio]

Afaik Destroy wouldn't immediately call OnExit, because it's deferred

I have no idea what this "OnExit" is though

[crisp minnow]

Hmm

[hard viper]

Q: will OnCollisionEnter always be followed by OnCollisionStay or OnCollisionExit?

[quaint rock]

Destroy happens at end of frame, would call the exit logic first then call destroy after

[crisp minnow]

        {
            var qiCluster = other.GetComponent<QiCluster>();
            if (qiCluster == null) return;

            ThisBreath.Remove(qiCluster);
            NextBreath.Remove(qiCluster);
        }

ThisBreath is what would matter in this case

        {
            var qiCluster = other.GetComponent<QiCluster>();
            if (qiCluster == null) return;
            
            if (NextBreath.Contains(qiCluster))
                Log.Warn("A QiStat we're already tracking for next breath has entered again!");
            NextBreath.Add(qiCluster);
        }

For reference that's the enter (there is no Stay)

[hard viper]

I’m seeing weird behaviour, and trying to figure out if I’m making a faulty assumption

[quartz folio]

You may be able to get away with using a reverse for loop instead of the foreach, but I am not totally across your logic, and it seems a bit brittle

[crisp minnow]

In what way?

[quartz folio]

That you're using a list while something somewhere else entirely can modify it based on events

[crisp minnow]

Hmm, maybe a concurrency bag?

[quartz folio]

There is no concurrency

it's just a logical error, modifying a collection while using a foreach over it is not allowed

[crisp minnow]

Yeah, but I didn't think it would get modified right away but rather next frame, at which point the enumeration would be over

I'm not sure how it can even change to be honest, I can't see anything else besides that

[quartz folio]

well, it seemingly Destroy immediately removes it from the physics world, triggering those events. It's not happening at the same time though, to be clear it's all still just on one thread.
Also Destroy usually will just occur later in the frame, not the next frame

You can use the debugger to check if that's actually occuring while you're iterating

[crisp minnow]

I'll have to investigate it further, thanks

Well... it triggers immediately. Didn't know that 😅

DestroyMe is where destruction occurs and it beelines into the OnTriggerExit

[quartz folio]

if qiCluster is the item that the same item that's being destroyed then a reverse for loop will work, if it's not it'd cause more unpredictable issues.
But that the solution needs to rely on that fact to me speaks to why the setup isn't ideal. You can make it robust by copying the list (into a different cached list) and iterating over that instead, which may be totally fine at this scale

[crisp minnow]

Yeah it should be fine to copy, I can't imagine more than maybe a dozen of items in one list at any time. The question however would be if I'm only doing this to circumvent the enumeration change, the reverse loop gets the same job done for less computation and memory

But I'm definitely taking a note of this quirk

[gentle canyon]

@rigid island

[rigid island]

alright so are the logs printing when you try to make purchase?

[gentle canyon]

um

wat does that mean

srry im kinda new

[rigid island]

You're new aand already trying to use an SDK for IAP?

Debug.Log

that prints debugs to the console

[gentle canyon]

ohh

one second ill check

@rigid island

Do you know @rigid island

[rigid island]

one of them is saying you did not Initilize the Oculus features , it tells you which method to use.
second one is you missing something on line 43 of the PlayFabShopManager script at runtime

[gentle canyon]

this? IAP.LaunchCheckoutFlow(skuToPurchase).OnComplete(BuyProductCallback);

[rigid island]

if that sline 43 then yes

[gentle canyon]

yea

[rigid island]

one of those is null.

probably IAP if services is not Init, I don't use Oculus so I can't really tell you much about it

[gentle canyon]

do u know how to fix it?

[rigid island]

You'd have to look through the documentation, I never used oculus before.

[gentle canyon]

im too young for this stuff man

[rigid island]

then why are you trying to setup IAP already ?

[gentle canyon]

I need it for my dad

[rigid island]

learn how to code a simple game first, get yourself familiar with coding

[gentle canyon]

he has cancer

[rigid island]

how would IAP help with cancer? you will probably not make anything from it

[gentle canyon]

money

My game is semi famous

[rigid island]

you coded a game but don't know how to implement IAP ? how did you code the game then

if you truly aren't trolling and wanna help your pops get a real paying job

[gentle canyon]

dude im 13

[rigid island]

so?

i was working at 13

mowing lawns or plowing snow, find something

[hybrid orchid]

Question, how common/acceptable would it be to create a separate tilemap + child maps for collisions and other stuff, for each section of the map in a game (fade screen when switching between areas)

because id want to be able to loop through the tilemaps in a specific area of the map in my game

[rigid island]

I don't see an issue here

[foggy cipher]

halp, I did something bad

[latent latch]

gonna need a bigger screen

[fervent furnace]

why dont you use for loop if you need index?...

btw i dont see g++ but you use g for checking

[foggy cipher]

I have to make a function that prints one layer that accepts another function

[rigid island]

this is unholy af

[foggy cipher]

way too tired to do this right rn

[latent latch]

if this was python it would tell you off saying something about cyclomatic complexity ;)

[fervent furnace]

and use stringbuilder

and change the voxel type to be dictionary to save one forloop and increase the performance
i think you want to print some debug message of unique voxel in each chunk and each chunk in superchunk and each superchunk in gigachunk and all gigachunk

oh wait, not, just print out all voxels

[foggy cipher]

preformance is irrelevant, this just formats and copys to the clipboard

[fervent furnace]

dict=new dict<Voxel,int>()
unique_id=0;
inside the foreach loop:
if(voxel.color.w>0&&dict.trygetvalue(voxel,out idx)==false){
  dict.add(voxel,unique_id);
  unique_id++;
}
else{
  //do nothing
}
```i believe it maybe better (at least for me), fewer line, fewer loop

[swift falcon]

Invalid pass number (0) for Graphics.Blit (Material "(Unknown material)" with 0 passes)

When building and running a Linux Dedicated Server, I see an infinite loop of the following Error thrown in the Console: Invalid pass number (0) for Graphics.Blit (Material "(Unknown material)" with 0 passes). I wish I could ignore this error but it's effecting performance; server is utilizing up to 80% of vCPU when running in a Docker container.

I hope someone can assist. I'm trying to launch a closed beta test of my upcoming game, but I'm totally blocked now due to this issue.

[umbral radish]

I am quiting Unity

[simple egret]

Yes we know you already said that in #💻┃code-beginner

It's off topic for both these channels though

[umbral radish]

I was meant to put it in a other server

[gray mural]

Hello, here I unsubscribe typeSelectinoField and its children when the gameObject is disabled, but it throws MissingReferenceException, because typeSelectionField is disabled before that. What should I do?

private void OnDisable()
{
    typeSelectionField.onOptionSelect -= SelectType;

    foreach (OptionSelectButton option in typeSelectionField.options)
        option.attachedObject.GetComponent<OptionSelectionField>().onOptionSelect -= SelectOption;

    LevelManager.instance.SaveLevelIfAintPlaying(GameUtility.currLevel);
}

[dusk apex]

The reference being disabled should not be an issue but rather it's likely that the reference was removed that is the issue.

Maybe show us the actual error with stacktrace

[gray mural]

oh, but gameObject shouldn't become null if it's disabled..?

[gray mural]

MissingReferenceException: The object of type 'GameObject' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.

oh, destroyed

[dusk apex]

So you've destroyed it but are still trying to access it

[gray mural]

but it's disabled in the inspector, not destroyed

[dusk apex]

if null
    return/ignore/skip etc```

[gray mural]

but it's bad if I don't unsubscribe an action ?

[dusk apex]

You can't unsubscribe anything from nothing

Null doesn't have anything to unsubscribe

It's already been destroyed

[gray mural]

I see, it becomes null when I disable its parent

levelCreator.SetActive(!value);

then it becomes not null when I re-enable its parent

[dusk apex]

On disable function:

Yo dude that has already been marked for destruction. Let me unsubscribe sometime real quick.
Subscription service:
Nope, we're already destroyed. Throwing an access violation error for attempting to modify me.

[gray mural]

I see, so I don't have to unsubscribe it if its parent is disabled, right?

this way it's considered as "destroyed" ?

[dusk apex]

It's not that it's been disabled, it's been destroyed.

[gray mural]

its parent is disabled.

#archived-code-general message

[dusk apex]

A disabled component or inactive object would simply not be calling their callback members. A destroyed object will soon be null - thankful null check considers them destroyed already.

Error implies that it's been destroyed

[gray mural]

I see, so it's considered as "destroyed" if its parent becomes disabled

[dusk apex]

No. The object was destroyed according to the error.

Disable and inactive does not imply destroyed

[gray mural]

I don't destroy it though, I disable its parent

[dusk apex]

But how come? I didn't destroy it.
Not certain if you did or did not but what's what the error is implying.

[dusk apex]

That's the mystery 😏

[gray mural]

well, it's strange...

levelCreator.SetActive(!value);
print($"Active now: {!value}; LevelCreator: {(bool)levelCreator}; typeSelectionField: {(bool)typeSelectionField}");

// output:
// Active now: False; LevelCreator: True; typeSelectionField: True

it isn't null here, but null in OnDisable

the thing is that it's null just when active now is false, that means the game is being played right now

[dusk apex]

Maybe you've got a "destroy this game object" on inactive/disable etc

[gray mural]

sorry, what do you mean?

[dusk apex]

Do you call destroy anywhere?

[gray mural]

I don't call it on this gameObject

on other, yes

[dusk apex]

Likely that isn't related to the error unless you're destroying when the state of the object changes.

The object was destroyed (not inactive or disabled) when the on disabled callback was fired. The mystery would be why?

[gray mural]

who knows.., I just have this OnDisable method on that GameObject

private void OnDisable()
{
    onOptionSelect -= SelectOption;
}

[dusk apex]

Are there more than one script attached to the object?

Did whoever reference and disable the script destroy it?

[gray mural]

yes, Unity's HorizonalLayoutGroup and my OptionSelectionField

[dusk apex]

Who destroyed the object before the callback was made?

Something has destroyed it before the callback was made

[gray mural]

No, this #archived-code-general message OnDisable method is called when I change my scene by pressing Home Button in the game

the typeSelectionField is disabled a by that time

(and destroyed)

[dusk apex]

https://docs.unity3d.com/Manual/ExecutionOrder.html According to the error, someone destroyed it before the callback was made.

Figure out why it was destroyed when it shouldn't have been destroyed or don't modify it after it's been destroyed.

[dusk apex]

So you've destroyed it..

Then the disabled callback threw the error

[gray mural]

it's written in the error 🤔

I forgot that it's serialized, it is not null until I press Home Button, then it throws me an error (just the game is in play mode and typeSelectionField is disabled)

[latent latch]

Some generic question since I stink of this stuff

public abstract class EntityRoutine<SO> : Routine where SO : EntityRoutineSO
{
  public SO EntityRoutineSO { get; set; }

  public void StartRoutine(IEntity target)
  {
      target.EffectsManager.AddRoutine(target, this); //problem with passing this exact instance
  }
}

public class EntityRoutineManager : MonoBehaviour
{
  public void AddRoutine(IEntity target, EntityRoutine<EntityRoutineSO> routine) { }
}

How do I tell the compiler I went to send this instance as this SO type of the current constraints into this function

[dusk apex]

If you didn't destroy it, figure out why it's unknowingly being destroyed.

[gray mural]

I see, I'll try to debug it right now, thank you for your help 😄

[latent latch]

Also I assume that if I had a more derived SO type this should still work
A more derived type and SO would be

 AbilityRoutine : EntityRoutine<AbilityRoutineSO>```

but I dont care if the manager doesnt know about this more derived type or SO

[dusk apex]

Maybe try casting this to the explicit type? The abstract ideally wouldn't know anything about it's inheritors though..

[latent latch]

maybe I'm not understanding the syntax but IDE doesn't seem to help

[quartz folio]

What if there was a method like EntityRoutine<SO>.SetSO(SO instance)
Your AddRoutine method would only be able to call SetSO with a EntityRoutineSO

What you have might make sense in the scenario you have set up, but the constraint doesn't actually allow for what you might expect, because of all the scenarios it caters for

[latent latch]

Right, but this less derived SO would still work with more derived class/SO, right

because the manager doesn't care about this AbilityRoutine and what it has, only the virtual methods

[quartz folio]

Because your method is not allowing for "more derived" classes, it cannot function properly with them

But what I'm saying is what if the virtual method took an instance of the derived SO type

how would that even work in this AddRoutine method, the AddRoutine can only see routine.Method(EntityRoutineSO instance)

but the derived class cannot take that, it needs the more derived type

the only way you can do this is if you also have a generic constraint on your AddRoutine method

or, you have add another interface or class that doesn't allow for the generics, like Routine

[latent latch]

let me reflect on this. This stuff is a spiderweb and I love digging myself holes

usually I would try other methods, but with unity I have to also please the editor by having the exact serializations

and not being able to serialize interfaces is really hard

[dusk apex]

You'd need something non built in to illustrate the different members in a collection of some abstract or interface types.

[quartz folio]

Just to elaborate on what I mean:

public abstract class Example<T> where T : ElementBase
{
  public void Method(T target) => ...
}

public static class Foo
{
  public static void Bar(Example<ElementBase> example) => example.Method(new ElementBase());
}

Calling

Example<DerivedFromElementBase> test = new();
Foo.Bar(test);

Will try to assign ElementBase to a class that needs DerivedFromElementBase, and this is why you can't set it up like this

[latent latch]

Hmm

[quartz folio]

I forget whether this is something you can do with covariant generics

that sort of thing just confuses me

[latent latch]

I've dabbled with covariant stuff and lost my mind over it already

trying to make one of those mmo hotbars with different options (armor -> equip, abilities -> cast, potions -> use)

it was more that I needed to allow these types on the hotbar

[dusk apex]

I'd do try get component or cast to determine the available options for the hot bar to keep all of the necessary hotbar related code in one place rather than having to explicitly implement special cases for unique abstractions.

[latent latch]

yeah the smart way lmao

honestly I feel like I want to rewrite it all and do it like that

the covariant stuff requires basically duplicating your classes into interfaces and it's ugly

[latent latch]

public abstract class EntityRoutine<SO> : Routine where SO : EntityRoutineSO
{
  public SO EntityRoutineSO { get; set; }

  public abstract void StartRoutine(IEntity target);
}

public class AbilityRoutine : EntityRoutine<AbilityRoutineSO>
{
  public override void StartRoutine(IEntity target)
  {
      target.EffectsManager.AddRoutine(target, this); 
  }
}

public class EntityRoutineManager : MonoBehaviour
{
      public void AddRoutine<SO>(IEntity target, EntityRoutine<SO> routine) where SO : EntityRoutineSO { }
}

Yeah, that seems to be the idea

just had to pass it up via virtual

with the constraint

It's unfortunate that the ide/intellisense is pretty useless when it comes to generic errors

[dusk apex]

What I've seen is, it's either parsing to see what we've got available or implementing the differences per level of abstraction to not have to parse/identify what we've got during runtime 🥹
Is the extra mess/work worth it? Runtime could be simplified a bit with a collection of additive options if needed - decoupling from the type (enum) and instead with inspector-prefab setup. It really depends on the size of the data you're working with, I guess.

[latent latch]

I'm always looking for ways around type checking, but sometimes it's just not worth the hassle yeah

was reading that a lot of the covariant stuff isn't even that performant so maybe it was all for nothing rofl

[dusk apex]

If you've got thousands of items, maybe trygetcomponent and cast would be worth it else predefining these with inspector/variances or inline implementation could be applicable if it's not too much (relative to differentiating options available)

[rain crater]

Hey, i've made this simple function

    void DeleteSelf()
    {
        print("I'm removing myself from existence!");
        Destroy(gameObject);
        print("I'm not removed!");
    }

How come the second print statement gets called? I think that if the gameobject is deleted, scripts on it should stop. The gameobject also doesn't get deleted

[leaden ice]

Well first off Destroy doesn't destroy the object immediately

It cues it up to be destroyed at the end of the frame

Second, there's nothing in C# that would allow a function to make another function stop running in the middle short of throwing an exception

Since Unity s API cannot violate the rules of C#, the code keeps running

[rain crater]

Alright, that makes sense

but then, what about the gameobject not being deleted?

[leaden ice]

It will be destroyed at the end of the frame

[rain crater]

but it doesn't, the game keeps running (in a broken state, that is)

[leaden ice]

If you think it's not, maybe You're calling this function on the wrong object

[warm aspen]

Instead of print use Debug.Log("your log message", this)
Then you can pause the game mode and click on the message in the console and it will highlight the object that sent the message in the hierarchy

If it's not destroyed, that is

[leaden ice]

Although it will have been destroyed probably so

Yeah

[rain crater]

Yeah, just found out that there actually is another gameobject holding that script, and I was dead sure there's only one
Well, that should fix everything

[rain crater]

that is useful, didn't know about the highlighting thing

[fervent furnace]

you can run code on a destroyed object since the instructions are stored separated

[rain crater]

Yep, I get it now

I've fixed that, thanks for help guys. Moral of the story: never be 100% sure that something you think you've removed long ago is actually removed.

[fervent furnace]

unsafe private struct A {
    int a;
    public void AA(A*a_ptr) {
        UnsafeUtility.Free(a_ptr,Allocator.Persistent);
        Debug.Log("i am called");
    }
}
unsafe private A* aPtr;
unsafe void Awake(){
    aPtr=(A*)UnsafeUtility.Malloc(4,UnsafeUtility.AlignOf<A>(),Allocator.Persistent);
    aPtr->AA(aPtr);
}

[scarlet viper]

if you have multiple objects of same class with public reference to a prefab, is that prefab going to be duplicated in memory or something
i think static keyword would be better if we want to ensure that theres just one copy

[leaden ice]

no

they're just references to the same object

[fervent furnace]

reference is a pointer pointing to the memory space, the memory pointed by them will not duplicated

[sinful hull]

Hi all. I want to check for inappropriate images within unity. Is there any sdk available for this?

[heady iris]

covariance and contravariance feel evil

[tawny mountain]

How can I determine when my object is moving and when it's not from this update function?

void Update()
    {
        var trackingPosition = Reticle.transform.position;

        if (Vector3.Distance(trackingPosition, transform.position) < 0.1)
        {
            return;
        }

        var lookRotation = Quaternion.LookRotation(trackingPosition - transform.position);

        transform.SetPositionAndRotation(Vector3.MoveTowards(transform.position, trackingPosition, Speed * Time.deltaTime), Quaternion.Lerp(transform.rotation, lookRotation, Time.deltaTime * 10f))
    }

[leaden ice]

compare the current position to the position you are moving to

if they're different, it's moving

[tawny mountain]

I tried velocity , and it plays walking animation but It wont stop playing the animation when target is reached

here's my code with velocity

void Update()
    {
        var trackingPosition = Reticle.transform.position;

        if (Vector3.Distance(trackingPosition, transform.position) < 0.1)
        {
            return;
        }

        var lookRotation = Quaternion.LookRotation(trackingPosition - transform.position);

        transform.SetPositionAndRotation(Vector3.MoveTowards(transform.position, trackingPosition, Speed * Time.deltaTime), Quaternion.Lerp(transform.rotation, lookRotation, Time.deltaTime * 10f));



        // Calculate the velocity by measuring the change in position over time.
        Vector3 currentPosition = transform.position;

        Vector3 displacement = currentPosition - previousPosition;

        float velocity = displacement.magnitude / Time.deltaTime;

        // Update the Animator.
        if (velocity > 0.1f) // Adjust this threshold as needed.
        {
            animator.SetFloat("Walking", velocity);
        }
        else
        {
            animator.SetFloat("Walking", 0);
        }

        // Store the current position as the previous position for the next frame.
        previousPosition = currentPosition;
    }

[leaden ice]

what debugging steps have you taken?

[tawny mountain]

I've debugged in the if/else for the animator as well as in the update function outside of if and else statements

[leaden ice]

ok and what did you log and what did you find when you did that

[tawny mountain]

the else statement doesn't run its debugs

[leaden ice]

so then that's never happening

[tawny mountain]

right

[leaden ice]

keep investigating why

[tawny mountain]

checking if velocity is less then 0.1

[leaden ice]

I see that

keep investigating why the velocity is still considered more than .1

I mean maybe this is a clue? cs if (Vector3.Distance(trackingPosition, transform.position) < 0.1) { return; }

[tawny mountain]

on we are returning out of update if it is

[leaden ice]

exactly

so the else statement is never going to get a chance to run

[tawny mountain]

And I can't set the animation to idle before I exit , I've tried that

[leaden ice]

wdym

[tawny mountain]

if (Vector3.Distance(trackingPosition, transform.position) < 0.1)
        {
            animator.SetFloat("Walking", 0);
            return;
        }

[leaden ice]

why can't you do that?

[tawny mountain]

I'm trying again but it didn't work last night

Ok , then lol It's working now ... Maybe I did something wrong last night, It's working now

Thank you @leaden ice

[hard viper]

If two objects are dynamic rigidbodies, will every OnCollisionEnter be followed next frame by OnCollisionStay/Exit?

I’m seeing weird behaviour and want to know if my assumptions are wrong.

[scarlet viper]

anyone knows if theres a difference in performance between instantiating existing gameobject and instantiating a prefab

(the first option will clone it)

[hard viper]

no idea. you'd need to test. the main cost of instantiating is going to be the allocation and initialization (and making future work for GC). I assume it'd be very similar

[fervent furnace]

prefab maybe slower since filei/o
gameobject stored in scene is loaded to ram by reading .scene file i guess

idk will unity loads prefabs into ram when you starting the editor

[gray mural]

In my game I save items in levels by their name and position. I use name to get an existing item prefab by its name and to spawn it in the game.
The problem is that I have different items that are derived from ItemsController.cs, e.g. Zombie.cs, Arrow.cs, Hole.cs, Player.cs.
I want not just to save the original prefab, but also to save their fields. But they're different. E.g. moveDirection and moveInterval for an Enemy, moveUnit for the Player.
How am I supposed to save them in the json file? Should I make all those classes Serializable and create a unique itemsData list for every item e.g. ZombieData, PlayerData, GroundData, WallData ?

[Serializable]
public class ItemData
{
    public string name;
    public Vector3 position;
}

"itemsData": [
    {
        "name": "Ground 3",
        "position": {
            "x": -2.0,
            "y": 3.0,
            "z": 140.0
        }
    },
    ...
]

public class Enemy : ItemBehaviour { }

[latent latch]

Yeah, usually if it's more than an ID then you need data containers and a specific load manager for each

[gray mural]

so like this?

[Serializable]
public class Enemy : ItemBehaviour { }

[Serializable]
public class EnemyData
{
    public Enemy enemy;
}

and the same for every item that I've got?

[latent latch]

Hmm, why does enemy derive from ItemBehaviour

[dusk apex]

Maybe Item refers to Object or Entity

[latent latch]

oh yeah probably

[gray mural]

no, Item refers to the GameObject in the game

so GameObjects that are part of my game

that can be spawned by the player

e.g. Ground (1x1 block), Wall, Zombie, Player, Hole, Arrow...

[gray mural]

because ItemBehaviour contains behaviour that all my items should have

[dusk apex]

Right, so the Item refers to some Object or Entity. Normally an item would be an inventory element or something rather than a world object - although world objects could become items as well (Minecraft).

[sage latch]

For a more flexible and maintainable solution, you could add a "special data" object to ItemData and make an interface to populate it

[Serializable]
public class ItemData {
    public string name;
    public Vector3 position;
    public object data;
}

public interface IAdditionalData {
    object GetData();
    void OnLoad(object data);
}

// generic version to get type safety
public interface IAdditionalData<T> : IAdditionalData {
    new T GetData();
    void OnLoad(T data);
    object IAdditionalData.GetData() => GetData();
    void IAdditionalData.OnLoad(object data) => OnLoad((T)data);
}

public class Player : ItemBehaviour, IAdditionalData<int> {
    ...
    public int GetData() => moveUnit;
    public void OnLoad(int data) => moveUnit = data;
}

// when you save
if (item is IAdditionalData additionalData) {
    itemData.data = additionalData.GetData();
}

// when you load
if (item is IAdditionalData additionalData) {
    additionalData.OnLoad(itemData.data);
}

This makes it extremely easy to add persistent data to your items, simply implement IAdditionalData<T> with a serializable type of data

[vernal compass]

Hey guys, I'm trying to make a simple wack a mole game
When a mole is revealed, I'm starting a coroutine so that after 2s it hides itself into the ground again
However, when the player hammers it, I want it to hide right away!
I've tried StopCoroutine and StopAllCoroutines to stop the "countdown" but it doesn't seem to be working well, any other alternatives I could use?

[unborn pewter]

can anyone help me with a problem??

[rigid island]

show current code

[knotty sun]

how have you implemented Start and Stop Coroutine?

[unborn pewter]

please anyone`??

[knotty sun]

if you want help you need to ask your question first

[swift falcon]

my music volume script working in unity but not when i build it

[vernal compass]

Hopes this makes it easier to understand!

[unborn pewter]

ok so, im trying to make a multiplayer game. so i need a specific package in the package manager. but i cant find the package. what do i do?

[swift falcon]

click on package unity registery and put it to built in

[unborn pewter]

ok ill try

[swift falcon]

and after that put it back to unity registery

[rigid island]

check for runtime errors with onscreen log or player log file

[swift falcon]

how do i do that

[rigid island]

!logs

[tawny elk]

📝 Logs

Documentation
Windows: %LOCALAPPDATA%\Unity\Editor\Editor.log
MacOS: ~/Library/Logs/Unity/Editor.log
Linux: ~/.config/unity3d/Editor.log

Unity Hub
Windows: %UserProfile%\AppData\Roaming\UnityHub\logs
Mac: ~/Library/Application support/UnityHub/logs
Linux: ~/.config/UnityHub/logs

[rigid island]

click link, scroll down

Player-related log locations

[knotty sun]

Hint. To Start and Stop Coroutines

Coroutine cor;
...
cor = StartCoroutine(myMethod());
---
StopCoroutine(cor);

[rigid island]

althought it might be UI issue

[rigid island]

can you first show your Canvas inspector

[unborn pewter]

it didnt work : (

[vernal compass]

Ah I didn't know you could save a reference to a Coroutine!
I'll try this, thank you!

[rigid island]

by music volume do you mean a slider ? @swift falcon

or code wise

[swift falcon]

i mean how can be the ui when i change the slider in unity music stops and in build dosent\

[swift falcon]

yes

[unborn pewter]

why does the package not sho up for me in the package manager : (

[swift falcon]

idk

[rigid island]

does the slider move when ur in the build?

[swift falcon]

yes

[unborn pewter]

anyone know what could be the problem??

my package manager does not have all the packages

[swift falcon]

i think is something that in the build the variables are not loading properly

because i only have the variable too load when i go into options to change the slider

[gray mural]

yes, player has an "inventory", where items are stored, they can place them in the game, then they become world objects

[rigid island]

well thats why i said to check for runtime errors

in build

[knotty sun]

@unborn pewter it might help if you
A) Told us which package you are looking for
B) Post a screenshot of your Package Manager

[rigid island]

you can also use this neat asset to check in build for console log
https://assetstore.unity.com/packages/tools/gui/in-game-debug-console-68068

[unborn pewter]

ohhh i founf it out. i need a new version of unity

[gray mural]

thank you for your response, I was offline for a while, but player has more than 1 field... (and the number of fields's gonna grow)

[unborn pewter]

why does it say i have 0 bytes when i have like 200

i cant installa newer version of unity : (

[rigid island]

did you select the correct drive?

[unborn pewter]

how can i do that

can i call you and screenshare. maybe that will be easier??

[scarlet viper]

is there a way to get GetComponentsInChildren without parent transform included ?

[unborn pewter]

idk why but for me just more and more problems pop up : (

and idk how to fix any of it

[rigid island]

its in preferences

[unborn pewter]

thank you so much : )

[latent latch]

the first index of the array is usually the parent so just exclude that

actually I forget now

[sage latch]

Still works, you just have to make a struct with the data you want to save and set that as the type

[gray mural]

yes, you have to write your own generic method

[unborn pewter]

bro u saved me like 3 hours of my life. thank you so much : )

[gray mural]

I see, I will try, thank you 😄

[unborn pewter]

oh wait.. fo course another f"#ing problem!!

noooooooo

idk guys. it just seems like nothing works

[rigid island]

is just windows that sucks xD probably

[rigid island]

open the logs

also this convo goes in #💻┃unity-talk

[unborn pewter]

wait i did somthing... and it seems to be working

[swift falcon]

@rigid island i can t find any errors in logs just this i don t know if this an error " Setting up 4 worker threads for Enlighten."

[unborn pewter]

: )

finnally

bro ur a real time saver thank you so much 😮

[rigid island]

not sure what i did but ur welcome 😄

[rigid island]

which log did you open lemme see

[swift falcon]

the Palyer olg from the appdata local low

[rigid island]

after running the game right?
hmm can you share the music script thing

• show setup

[swift falcon]

https://pastebin.com/mzUQaWs3

is working in unity bot not when i build it

[rigid island]

so ur talking about the PlayerPrefs not loading or just the slider doesnt work

you need to explain what exactly is going on and whats happening instead "doesnt work" doesn't help

we know it doesn't work, thats why you're here

[hard viper]

can someone explain why (3 & (-1)) is 3? I would have expected it to be 2.

working with bitshift operators is fine until we have signed numbers -.-

[fervent furnace]

-1==0xffffffff

(you may see memset(memo,-1,size) on dp problem because of this)

[hard viper]

why is the rightmost bit of -1 not 0?

[fervent furnace]

~1+1

[hard viper]

I thought the rule is: leftmost bit is 0 if positive. If leftmost is 1, all other bits are complement

[fervent furnace]

~1 you get 0xffff fffe and +1

then 0xffff ffff

two complement

[hard viper]

that’s really confusing, so there isn’t a sign bit?

negative numbers are just defined by being really big, is what you are saying?
ie -x = ~x + 1?

[fervent furnace]

there is still a sign bit, you can check it by >>31

INT_MAX is 0x7fff ffff and the leftmost bit is zero

[hard viper]

i’m still confused then as to why -1 = ~0

[fervent furnace]

once you come to bit level then sign is meaningless indeed
negative number is defined as ~x+1, but in x=1 case it is just equivalent to ~0

[solemn raven]

hi
is it possible to mention a text file in a cs class ?

like instead of
public ClassName className;
i wanna say general class or text
public Text openFileAsText;

[fervent furnace]

TextAsset

[solemn raven]

thanks ❤️

[hard viper]

so you’re saying:
-x = ~x + 1.
x >> 31 = sign bit.

[fervent furnace]

yes

[hard viper]

ty tina. it’s hard to find good info online because lots of sources conflict because they start talking about different representations

[fervent furnace]

two complement system

[hard viper]

one more question if I can: I get (-1) >> 31 = -1. Is this because >> isn’t working on the raw binary?

[fervent furnace]

oh it may be arithemetic right shift

[hard viper]

follow up then; Why wouldn’t that be zero?

[fervent furnace]

arithmetic right shift will fill one if you are trying to shift a negative numberelse fill zero on left hand side

so you should >>31 & 1 btw i believe the alu will just check the leftmost bit for < 0 or <= 0 instr

[hard viper]

so if x < 0, arithmetic x >> y is: remove leftmost bit of x, logical x>>y, put leftmost bit back in

like, it only operates on the right 31 bits

and 100000…00000 gets automatically changed to -1?

[fervent furnace]

no they just shift the bit but arithmetic is:
0b????.... fill the ? with the original leftmost sign while logical is filling it with 0

[hard viper]

ty for your time btw tina. this helps a lot

[fervent furnace]

and whether >> is logical is arithmetic is depend on data type unsigned is logical signed is arithmetic
also depends on the language....

[frigid bone]

Anyone know if its possible to get the position of the furthest path of a navmesh agent? , im trying to have an npc path towards the player and when he is blocked , he should dig.

[main shuttle]

Furthest path would be to run in circles for eternity. How would you get a position for that?
When the NPC doesn't find a path to the player, it tells you in the request you send. Don't know if you mean that.

[frigid bone]

Is there a path to set as the active path from that request?

[main shuttle]

You can catch that it failed to get a path to the player, and set another path to dig yeah.

[quaint reef]

Quick question: if I have two voids: void a(T data) and void a(List<T> data) if I do: a(List<Something>) will it load the first or the second one?

[hard viper]

i think the solution to my negative numberproblem is to avoid all bitshift operations on negative numbers lol.

[knotty sun]

Depends what T is, and btw they are called Methods not voids, void is a return type

[quaint reef]

Thanks

[fervent furnace]

    public static void A<T>(T t){
        Console.WriteLine("A t");
    }
    
    public static void A<T>(List<T> t){
        Console.WriteLine("A tt");
    }
    
    public static void Main(string[] args){
        A<List<object>>(new List<object>());
        A(new List<object>());
        Console.WriteLine ("Hello Mono World");
    }
```i have tried it, output:
A t
A tt

[knotty sun]

I think you mean PostProcessVolume

[fervent furnace]

idk will it depends on compiler

[static bramble]

am i going about this right? to spawn objects on my map im shooting a ray cast with a 25.0f distance. if it hits then im saying that i want to make a new object (currently a block for debugging) and having it spawn on the network. this lets me spawn them in but the issue is that they spawn in some areas i dont want (like you should only build on ground not on say a floating spot), another issue is i want objects to never collide so im not sure when to do box cast to test the bounds. Any advise? im trying to make it similar to building in holdfast

[hard viper]

If unity gets stuck in like an infinite loop, or just one frame that takes super long to calculate, is there a way to just force unity to stop?

[main shuttle]

Attach the debugger and pause the debugger works afaik.

[orchid bane]

Does GetComponents return components in the same order as the one they are in in the inspector?

[knotty sun]

not necessarily so dont rely on it

[orchid bane]

2018.4 docs say it's reliable but the new ones dont

https://docs.unity3d.com/Manual/InspectorOptions.html#reordering-components
"You can reorder a GameObject’s components in the Inspector window. The component order you apply in the Inspector is the same order that you need to use when you query components in your scripts."

@knotty sun

[knotty sun]

That's only since 2020, since you didn't specify an Editor version in your question you got the answer you did

[orchid bane]

https://docs.unity3d.com/2017.4/Documentation/Manual/UsingTheInspector.html
"The order you give to components in the Inspector window is the order you need to use when querying components in your user scripts. If you query the components programmatically, you’ll get the order you see in the Inspector."
It is reliable at least since 2017

[dawn pier]

So I have the following script:

public class Mediator : ScriptableObject {
    private GameObject selectedSprite = null;

    public GameObject getSelectedSprite(){
        return selectedSprite;
    }

    public void setSelectedSprite(GameObject o){
        selectedSprite = o;
    }
}```
And Unity is giving me the error "The variable selectedSprite of Mediator has not been assigned", directing me to UIManager, line 12 (line 11 is void Update()):
```cs
void Update(){
        if(mediator.getSelectedSprite() != null){
            if(mediator.getSelectedSprite().transform.parent.gameObject.CompareTag("Rocket")){
                mediator.setSelectedSprite(null);
                openIOPanel();
            }
        }
    }```
Why the error? I WANT the cariable to be null for 99% of the time, and only when it becomes non-null should something be done, at which point it becomes null again.

Is it because GameObject has to be something already extant in the scene?

[bold pawn]

[Serializable] == [System.Serializable]?

[ionic adder]

Yes

[knotty sun]

not quite

using System;
[Serializable]

== [System.Serializable]

[heady iris]

in general, using allows you to omit the namespace

using Foo.Bar.Baz;

Foo.Bar.Baz.Buz
Buz

both would work

[swift falcon]

anyone help me with the menu code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
public class MainMenu : MonoBehaviour

{

[SerializeField] private string NewGame = "Level1";

public string NewGameLevel1 { get; private set; }

public void Newgamebutton()
{
    SceneManager.LoadScene(NewGameLevel1);
}

}

[celest iron]

Don't crosspost

So anyways, hi.
I am having a problem when calling a function using a button (this also happens if I use OnValueChanged from NaughtyAttributes).
The function I'm calling is GenerateIsland: https://pastebin.com/eEwsVLvV
It works fine when I start a new game, the thing is, if I change any value while in play mode, I get very weird generation issues. Like, for example, if I change the seed. However, if I give the same seed outside of play mode, it works fine as it should.
The problem, I assume, is that no new value is being given to the altitude variable, which makes the ocean generation unchanged.

The ocean is a custom tile I made: https://pastebin.com/qJwvG6xu

[bold pawn]

You should probably post the whole script...

[celest iron]

That's literally the only two functions I have

Anyways, the problem is the altitude variable, as the ocean color is the only thing that doesn't change

it seems I'll have to create two tiles for the ocean then

That's not how you compare tags

https://docs.unity3d.com/ScriptReference/Component.CompareTag.html

Wait, it should work

Weird

Oh. You need to do collider.gameObject.tag

You need to be more specific with "isn't working"

Only one of the objects need a rigidbody

Make sure your player is not kinematic

Does your class happens to be named Collision?

Show the inspector of both the wall and the player

and the whole script

This error usually happens if you have a class named Collision2D

!code

[tawny elk]

Posting code

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

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

[celest iron]

Did you use Debug.Log inside the method to see if it is really not outputting anything?

Then the problem is with the logic

First try changing jumpsLeft != 0 to jumpsLeft > 0

Use col.gameObject.tag

ye

It worked?

👍

[cinder ore]

Can anyone able to detect the error in this code?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;


public class PlayerControllerX : MonoBehaviour
{
    public GameObject dogPrefab;
    public float fireDelay = -10.0f;

    // Update is called once per frame
    void Update()
    {
        fireDelay = 0.1f;
        // On spacebar press, send dog
        if (!Input.GetKeyDown(KeyCode.Space) || fireDelay > 0.0f)
        {
            return;
        }
        Instantiate(dogPrefab, transform.position, dogPrefab.transform.rotation);
        fireDelay = 10.0f;
    }
}

[atomic sinew]

Hey everybody. I often get these warnings: "There are inconsistent line endings in the script. Some are Mac OS X (UNIX) and some are Windows."
I'm using Visual Studio as my code editor. I changed Solution Options/Source Code/Code Formatting/C# source code/Text Style/Line endings to "Unix / Mac", but still the same warning.

[plush ridge]

Your if statement appears to always be true, as "fireDelay" will constantly be updated to 0.1f which is ' > ' than 0.0f

You also don't have to put the decimal. You could do -10f, 0f, and 10f. Either way is fine, but just a tip.

[hidden lance]

Hello, I am trying to set the resolution of my game to always maintain the same aspect ratio. Is there a way to do this immediately on game load?

I tried using Screen.SetResolution in a method with this tag: [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSplashScreen)]

But the resolution doesn't change until the first frame is rendered. I'd like to set this before the splash screen.

[leaden ice]

You're setting fire delay to 0.1 each frame so it will always be greater than 0

[placid island]

How can I change the name of my project? I had changed the path to my project but it's exception info still directs to the former one.

I know this question should not appear in this channel, but I really don't know where to post it

[leaden ice]

In project settings there's a product name

[placid island]

I had changed that

[leaden ice]

Those are the only things you need to change. Product name and the project directory name.

Are you doing Android perhaps? That has additional settings too like bundle name

[placid island]

I mean the path here. It now shows the former path.

[placid island]

Nope, it's a windows game

[leaden ice]

Which thing is wrong? The file path?

Sounds like you need to recompile or you still have the old copy of the editor open or something

Or do you mean the namespace of your class?

[placid island]

Yeah, it shows a path that does not exists.

No, the namespace is correct

[leaden ice]

Probably just needs to be recompiled

Burst recompiled maybe

[placid island]

But I didn't enable burst compile in my editor. How can I force editor to recompile every script?

Oh, wait. I just deleted all the .meta files and reloaded the project. Won't it recompile every script?

[leaden ice]

That will break most of your references

Making any change to code should trigger a recompile (make sure it's in the assembly with the issue though)

[placid island]

I prefer to assign them in code. So my project didn't crash

[placid island]

Ok, it works. Thanks for your help.

[dawn pier]

Still haven't solved this issue.

[tame spruce]

On the Update() method, on line 12, there is no selectedSprite variable. But the error mentions that variable.

[leaden ice]

Make double sure this code and error message are up to date

Because that doesn't really seem correct

[tame spruce]

Agreed

[scarlet viper]

Are there any cool ways for creating a prefab, passing a variable and calling a method on it?

1. I have:

Instantiate(prefab).getcomponent<script>().Create(parameter);

2. I also have a static class version:

StaticClassCar.Create(prefab, variable );
static public void Create(GameObject prefab, Variable variable ) { }

But i think its weird how i have to pass the prefab Which way is better guys ?
NVM im going with the first way

[fervent furnace]

prefer first , 2 return nothing and you have no way to get the return value from instantiate nor getcomponent nor the create() on the component

[latent latch]

I use static constructors usually, but now that i've got a lot of object pooling usually I just have some assign function on my objects

[outer brook]

Hello so I have this checkpoint script which does work as intended in dev mode but it does not when playing it as a build not to sure why on build it does not work, checkpoint's box collider is set as a trigger

private RespawnScript respawn;

void Awake()
{
    GameObject.Find("Player");
    respawn = GameObject.FindGameObjectWithTag("Respawn").GetComponent<RespawnScript>();
    
    DontDestroyOnLoad(this.gameObject);
}

public void OnTriggerEnter2D(Collider2D other)
{
    if (other.gameObject.name == "Player")
    {
        respawn.respawnPoint = this.gameObject;
       
    }
}

so the checkpoint is supposed to save data while the player goes into another scene and then returns to the scene with the checkpoint

[pastel cosmos]

Did u make sure your scenes are imported

And u used the right indexes

Or maybe you loaded them with they're name

[outer brook]

I use a persistent scene loader so it saves it when the player collides with it, when you mean imported do you mean in the build settings or something else?

[pastel cosmos]

Yea

I mean when u exported it

[outer brook]

yep all present

[gray mural]

Hello, does anyone have an idea how to implement this kind of selection in my game? (like in Photoshop)
How is it done? I know how to select space, but I want to know how to draw those lines. ( - - - - )

[main shuttle]

Just an outline shader with white space in between I guess.

[gray mural]

outline shader?

[gray mural]

I see, do this lines have a fixed size?

[main shuttle]

But then with another pass that does not only do 100% lines, does it staggered

It's your shader party, you can do whatever you want

You can make the size the whole screen if that makes you happy

[gray mural]

I mean, the closer you're to the screen, the more lines you see in Photoshop

[main shuttle]

Yeah, that all works in shaders. It's up to you to make that in shader graph though, I don't know if there is an asset that already does this

[gray mural]

Maybe you have any useful documentation or a video for this stuff?

[main shuttle]

But atleast you have the term you are probably looking for.

[gray mural]

what term ?

[main shuttle]

Outline shaders, there are wholes swathes of 3d and 2d tutorials on this.

[gray mural]

Great, I will have a look on that, thank you 😄

[umbral radish]

I am going back to Unity again

[gray mural]

How do I make a rect from the mouse position? It is drawn with completely different position

startPosition = Input.mousePosition;
selectionRect = new Rect(startPosition.x, startPosition.y, 100f, 100f);

private void OnGUI()
{
    if (isSelecting)
    {
        GUI.Box(selectionRect, string.Empty);
    }
}

[knotty sun]

        Vector2 mouse = Input.mousePosition;
        rect = new Rect(mouse.x, Screen.height - mouse.y, 100, 100);

[gray mural]

It works, thank you! 😄

[tulip cosmos]

Hello, I have 2 questions. Here's the context: when switching weapon, the weapon gameobject that is tied to the player gameobject changes, so when the player shoots or reloads or anything, it reads the properties of the weapon gameobject (ammo, damage, reload time and so on.).
Now, when switching weapon, I also need to update the GUI, so I was thinking about 2 implementations:

1. For example, inside the code that deals with switching weapon, I also put the code that modifies the GUI, meaning I need to get the GUI components (texts and images). Thing is, I separated the code of each actions (shooting, reloading, switching and so on.), which means I'll have to get GUI components on each scripts and I don't know how to feel about it.

2. I try to implement an event system, in which if the player switches weapon, it emits an event, and all the listeners of that event capture it and launch some code of their own.

So the 2 questions are :
is 2) even possible to implement?
Assuming it is possible, is it better than 1) ?

[leaden ice]

Yes 2 is basically the standard way to do UI

It's called the observer pattern

[tulip cosmos]

Oh nice

I'm gonna look into that, thanks

[steady moat]

Alternatively, you can have the MVC pattern.
Your weapon would be the model, the controller would be the one that reads out the weapon and update the UI, the View would be the widget that compose the UI. (Label, Panel, Animation, etc.). In my opinion, such implementation is more stable and less complex than event. That being said, event is definitely a way to achieve that.

The difference would be:
In an MVC setting, you would read out the Ammo of your gun each frame to update its value.
In an event setting, you would subscribe whenever the Ammo of the current gun is being updated.

Event system is definitely more performant, however you need be careful because you also needs to listen to event such as when the weapon change.

[vivid remnant]

I created a weapon system which includes both hit scan weapons and physical projectile based weapons. When a projectile hits an interactable object, it damages the object and applies a force on it depending on one of two things: how long it took the projectile to hit something(for the shotgun pellets) or how close the projectile was to the object when it exploded(for the cannonball).
The problem is that the force that pushes the interactable objects seems to be too great but this wasn't a problem before.

You can find the script here: https://pastebin.com/7vinQHAJ

It has to do with the way I move the projectiles. Before, I moved the projectiles by using Transform.position(the commented lines of code) but now I move them using the Rigidbody.MovePosition().

This is the behavior when I use Rigidbody.MovePosition().

This is the behavior when I use Transform.position.

Could somebody help me understand why using Rigidbody.MovePosition() instead of Transform.position is causing the force applied on the interactable objects appear greater?

[steady moat]

You do not want to use Transform.position in any form for physics.
MovePosition is not really sutable for the usage you have.

You should use Rigidbody.AddForce(); or Rigidbody.velocity.

[vivid remnant]

The projectiles have kinematic rigid bodies so I can't apply forces on them or change their velocity.

[steady moat]

Also, rigidbody.MovePosition should be use in FixedUpdate

[steady moat]

Why is that ?

[vivid remnant]

When I innitially started working on the weapon system, I thought that non-kinematic rigid bodies would be risky to work with as they can be affected by other rigid bodies.

[steady moat]

You are the one that decide whatever affect it.

With physics layer

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

[vivid remnant]

True but do you think this is what's causing the behavior?

[vivid remnant]

The behavior of the projectile is inside an IEnumerator method. Inside the coroutine, there is a while loop that waits for fixed update before moving the projectile.

[steady moat]

No idea, I suspect that using Transform.position fucks with the physics.

[steady moat]

I have no idea how it actually behave with the Physics, however there is little to no reason to use Coroutine here. You can simply use the Update function.

[leaden ice]

Seems overcomplicated. Why not just give it velocity

No need to be doing something every frame for every projectile

[vivid remnant]

@leaden ice, here.

[leaden ice]

Make them dynamic

[vivid remnant]

You mean non-kinematic?

[leaden ice]

Yes

The opposite of kinematic is dynamic

[vivid remnant]

I always referred to them as kinematic and non-kinematic. Thank you.

I will make the rigid bodies dynamic but could you please teach me why is this the reason of the change in behavior?

[leaden ice]

It will let you delete 90% of your code, improve performance, and give you better behavior.

[vivid remnant]

Oh, no, I get that. I meant to ask why does using a kinematic rigid body cause this behavior to occur.

[swift falcon]

Anyone know how to fix this

[latent latch]

!learn

[tawny elk]

🧑‍🏫 Unity Learn can offer you over 750 hours of free live and on-demand learning content for all levels of experience! Make sure to check it out at https://learn.unity.com/

[leaden ice]

You disabled your collider

So of course it doesn't collide

[unborn pewter]

can anyone help me with something??

[vivid remnant]

You can just ask directly. 😄

[unborn pewter]

i can not drag my player in here

do you know the problem??

ive been stuck on this for like 1hour

[leaden ice]

That object doesn't have a NetworkPrefabList component on it

Which is what your field wants

[unborn pewter]

?

um ill try

[leaden ice]

You'll try what

[unborn pewter]

idk

[leaden ice]

What are you doing here

Why do you have a list of network prefab lists

[unborn pewter]

um can i screen share in a vc then you can help??

[leaden ice]

No

[unborn pewter]

ok

[leaden ice]

Just explain in English what you're trying to accomplish

[unborn pewter]

im trying to make a multiplayer game. and to spawn in my player i need to put my player in this prefab list

[leaden ice]

You made a list of prefab lists

Or an array of them

Sounds like you just meant to have a single network prefab list

Aka you declared the variable incorrectly

[unborn pewter]

ok

but darging it into the thing worked on the vid??

[leaden ice]

Didn't you already drag it here

In the player prefab slot

[unborn pewter]

yea, but acording to the vid i need to drag into the network prefabs list

[leaden ice]

Go back

[unborn pewter]

but i can try it without

[leaden ice]

You probably missed something

Or are doing something wrong

[unborn pewter]

ok

[leaden ice]

Generally the type of the object has to match the field it's being dragged into

[unborn pewter]

ill try double checking the vid

i tried whatching the vid again but it still doesn't work

[leaden ice]

Without further context it's not really something I can help with

[unborn pewter]

yeah i get that

thank you for trying to help : )

[leaden ice]

The only things that can be dragged into that list are network prefab lists

If your player doesn't have that, it can't go there

You're either dragging the wrong thing in or you missed putting something on the player

[unborn pewter]

it does have the network object script on it tho

[leaden ice]

Doesn't help us

If we need a banana, it doesn't help if we have an apple

[unborn pewter]

true

[leaden ice]

It's also possible the tutorial you are following is using a different version of the network framework or something

[unborn pewter]

yeah

it is using a diffrent version of unity

mby that is why??

[leaden ice]

Things might have changed

Best to use the same version of everything as the tutorial otherwise there's a risk of things being slightly different

[unborn pewter]

ill try to find a newer tutorial then

thanks for your help

[swift falcon]

Hey guys I have a question, how can I make a script that makes every device check the current time in London and if the time is midnight it does something?

[knotty sun]

The same answer as when the question was about Italy

[swift falcon]

Oh right I already did the question, but I don't remember getting any answers

Oh yea I just noticed

[tulip cosmos]

I see, thanks for the insight !

[hard viper]

Suppose I have a parent class that is generic. Child1 : Parent<Child1>, Child2 : Parent<Child2>,
Parent is abstract and has static variables that I want to be shared across each child class (Child1/Child2 should both share the same access to static variable Parent.MyVariable). Any suggestions on how to do this?

[gray mural]

Hello, does somebody know what I should use to do this kind of selection in Unity? Are those Meshes, Rect transforms, or what? How do I combine them? (this's from Photoshop)
The number of dashes also isn't fixed. There're more dashes when you get closer

[rigid island]

Are you talking about tiles?

or just making that shape

[gray mural]

no, I am talking about the full selection behaviour

it's just a random shape to show what I mean

I have to be able to draw this stuff not just in a rectangle form

those lines are just on the borders of the shape

perhaps, just "how to make a solid line to cover any shape (a border)"

[rigid island]

yeah this is some maths beyond my understanding :\ soz

dynamic shapes n all that

[gray mural]

you shouldn't apologize 🙄 I'm just asking anyone who may know it 🤔

I've tried to find some tutorials on the web, but that wasn't what I needed

I have also tried GUI.Box, but it draws screen space rectangle

[vivid remnant]

@steady moat, you meant FixedUpdate() here, right?

[steady moat]

If you are using MovePosition, yes. However, you should really use Rigidbody.velocity

[vivid remnant]

I changed that, meanwhile.

Look

[steady moat]

You only need to set velocity once

[vivid remnant]

Ignore the message in Debug.Log(). I'm tired. :)))

[steady moat]

Also, you can use OnTriggerEnter/OnCollisionEnter for collision

[vivid remnant]

I'm doing that already.

[steady moat]

Then why raycast

[meager iris]

any1 know why this doesnt wokr

[vivid remnant]

Well, since the projectile moves at a fixed timestep, there is a chance it might go through very thin objects without detecting them so I cast a ray from the previous position to the current one in order to compensate for such situations.

Does it make sense?

[rigid island]

dont crosspost

[steady moat]

Use extrapolation/interpolation setting

[vivid remnant]

If by that you mean I should set the Interpolation of the rigid body to Interpolate, I did that already.

[steady moat]

I meant https://docs.unity3d.com/ScriptReference/Rigidbody-collisionDetectionMode.html

[rigid island]

so maybe just create the squares first which should be easy then find the edges/boundaries
https://stackoverflow.com/questions/72998996/drawing-the-outermost-boundaries-of-set-of-squares

[vivid remnant]

Oh, I see. Wouldn't this have a greater impact on performance?

[gray mural]

Oh, that seems to solve my task. Thank you. Hope it won't be too expensive to do every frame.

[steady moat]

Do you think that shooting a ray each frame would be better ?

[rigid island]

Let me know how it turns out

[gray mural]

sure.

[vivid remnant]

I'm not sure. That's why I asked.

Also, I moved the line of code where I set the velocity of the projectile out of the while loop and I still get weird behavior when the projectile hits a box.

I should mention that when the projectile hits the object, the force applied to set object is of type Impulse and it has a value between 1.25 and 3.75.

[rigid island]

#⚛️┃physics

[scarlet viper]

oh sorry

[vivid remnant]

So I set the collisions detection to Continuous for the boxes and Continuous Dynamic for the projectiles and now I get consistent behavior. 🎉 🎉 🎉

@steady moat, thank you so much! 🤝

[meager iris]

how do i keep music playing whie changing scenes

[rocky jackal]

if i put physics into a fixed update funktion, will it be frame rate independend(for example you wont move faster with more fps or the other way arround) ?

[knotty sun]

DDOL

[simple egret]

Yes, that's why physics applied over time (like with AddForce) should always be in FixedUpdate

[rocky jackal]

Okay

[near wagon]

yo can some1 help me with my playermovement/damage script

i've got this like damage thing

and i want it to knockback when it hits the spikes

but it only knockbacks upwards

and not back

should i send the whole script

maybe in like pastebin cuz its too long

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

its at line 53

like the function

oh and i didnt mention its 2d

[mellow sigil]

You override horizontal velocity in FixedUpdate so the knockback gets undone there

[near wagon]

ohh

how can i fix it

[mellow sigil]

Don't set velocity directly to move. Use AddForce.

[near wagon]

it worked but its like slidey n slippery n shit

oh wait is it the forcemode thing

oh uhh

[mellow sigil]

The default force mode is correct. You'll have to adjust the amount of force, drag and friction until it feels right

[spring creek]

You can also start a coroutine to add knockback and disable velocity setting. Then when the coroutine is done, go back to normal movement

That's a common way of handling that

[near wagon]

ok thx

[gray mural]

sorry to bother you, they use gizmos in that answer, but it's not visible for the player, are you aware of any way to draw the line so that the player'll see it?

[rigid island]

use line renderer

or GL potentially

[opaque falcon]

looking for help with some buoyancy physics. i found this (seemingly) great pipeline that has an outdated tutorial i'm trying to get to work. has anyone used this? :https://www.habrador.com/tutorials/unity-boat-tutorial/2-basic-scene/

here's a newer repository with a sample scene that doesn't work: https://github.com/Habrador/Unity-Boat-physics-Tutorial

i'd love to reverse engineer it but it's busted

[terse garnet]

Guys, I want to use this code snippet but I can't add the JavaScriptSerializer from which library does it belong to?

[mellow sigil]

https://www.google.com/search?q=javascriptserializer+c%23

[hard viper]

are there any watchouts I should know about with respect to structs and interfaces?

[simple egret]

When assigned to an interface type, local variables of a struct type are boxed (put onto the heap) which can be expensive if done a lot

Similar to converting any struct to object

[terse garnet]

I've searched several ways, but it won't let me import the System.Web.Script library

[simple egret]

That thing is deprecated, use a JSON serializer that can support root collections types such as Newtonsoft.Json

[rigid island]

!code

[tawny elk]

Posting code

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

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

[proven path]

how serious should I take the principle of least privilege for unity? Is it fine if i just open up set accessors to classes that aren't ment to use them and such stuff?

[simple egret]

For the user who asked about saving scriptable objects - Scriptable objects should not be used to store data that can be mutated (changed). Use a normal class that does not inherit from anything (POCO - Plain Old CLR Object) and save that to a file using your usual serializer.

[rigid island]

its good practice

everything should be private for the most part but yeah stick to properties if you need to grant access outside

[fervent furnace]

i just stick to public, if none or lazy evaluation on that variable is required

[proven path]

I see, for instance I try to use some kind of view model controller pattern, and sometimes there I have properties than can be changed by other model classes and be monitored by the view. Is there any clean way there to maintain the principle of least privilege, or should I just throw it and use public setters

[gray mural]

thanks, I'll try this

[elfin tree]

What is the code equivalent of doing this at runtime? (alt+shift pressed)

[latent latch]

Get max screen space on the x then shift pivot to it?

[elfin tree]

Would that change the position too?

[latent latch]

if you want it to. You can use another game object as a pivot or calculate the dimensions of your window and work it out

But yeah, get screen space of x, and y/2

You can probably find some similar tutorials implementing tooltips

[vocal harbor]

sorry if im interrupting a conversation rn but i have an issue with physics, i have a player that is composed of a bunch of cube that are their own object. i made it so that they all work with my player's rigidbody and it handles collision as i want. the issue is that when i rotate (especially fast), some of my cubes go through nearby walls. i tried putting my player's rigidbody to continuous collisions but it didnt change anything. can someone help me?

[sly iron]

hi , I have problem ,when I add script component and try to start the game , the script deleted and hidden in object then the game start

[somber nacelle]

how are you rotating it?

[sly iron]

and script removed from compnonets

I try to add it again but it still removed

[somber nacelle]

are you perhaps destroying the component in Start or Awake?

[vocal harbor]

Quaternion targetRotation = Quaternion.RotateTowards(transform.rotation, Quaternion.LookRotation(cibleRotation), vitesseRotation); joueurRB.MoveRotation(targetRotation);

it's in fixedUpdate btw

[somber nacelle]

is the rigidbody kinematic?

[vocal harbor]

my cubes dont have rigidbodies cus then they just ignore every collisions idk why

[rigid island]

probably moving transforms

[somber nacelle]

joueurRB.MoveRotation(targetRotation); shouldn't work if you've frozen the rotation. so you're probably rotating it via the transform somewhere

[vocal harbor]

huh

i double checked and im not rotating anywhere else

[simple egret]

It cannot rotate because you checked these three:

[vocal harbor]

so why am i rotating lol

this is driving me insane

[simple egret]

Because something uses the Transform to rotate other than the rigidbody

Or a parent/child object rotates

[vocal harbor]

well my cubes dont have any script to move, they all just follow the player's movement

[rigid island]

so they dont have collisions following player?

[vocal harbor]

i must be missing somehting

[rigid island]

is that what ur asking

[vocal harbor]

they are basically just additional colliders for the player

[fervent furnace]

rect tf.anchorMax=some vector2, rect tf.anchorMin=some vector2
you may have to set the offset min and offset max as well
@elfin tree

[stark sun]

when I drop enemy once it never follows me back only ascends to air and rotate randomly

[sly iron]

no , its just like this to make object move,
void Start()
{
rb.useGravity = false;

}

// Update is called once per frame
void Update()
{
    rb.useGravity = true;
    rb.AddForce(2000 * Time.deltaTime ,0,0);
    
}

I find some problems is unity consle

[somber nacelle]

!code 👇

[tawny elk]

Posting code

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

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

[sly iron]

NullReferenceException: Object reference not set to an instance of an object
cup.Update () (at Assets/cup.cs:19)

@somber nacelle

[somber nacelle]

show the contents of cup.cs

[sly iron]

can I send it here?

[rigid island]

yeah but Large Code Blocks
#archived-code-general message

[sly iron]

okay ,
https://gdl.space/yepodudiza.cpp

just short code

[somber nacelle]

you never assign to rb. also for future reference, always start debugging with the first error in your console. not the last

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

[fervent furnace]

and your code hiding the gameObject property inherits from monobehaviour

[rigid island]

child collider doesn't care about your parent rigidbody rotation

it phase thru stuff

[vocal harbor]

is there some way that i could make it work?

[rigid island]

actually hold on , it depends on the speed too

just tested it

[vocal harbor]

yeah at low speed it's fine but when turning at the speed that i want it goes throught the walls

[sly iron]

@somber nacelle@fervent furnace thank you

I just forgot to write public

new in C#

[rigid island]

yeah the child might still using transform to rotate/follow parent rotation

[sly iron]

the component removed auto because of bugs

[vocal harbor]

i get that, i just dont understand where i would have done that

also rn im debugging code that my friend wrote so im kinda lost in his things

[rigid island]

trying different settings :\

[stark sun]

can someone take a look at my thread

[wanton sierra]

In my character controller, when I for example strafe and switch from A to D, then the movement completely stops and goes to the other direction, this isnt smooth.
How do I fix this

[spring creek]

Depends on how you move right now.

transform.position += ?

Or something else?

[wanton sierra]

charactercontroller.move

[spring creek]

Ahhh, using the actual cc component. I have very little experience with it.

What do you put IN the move call though? Where do the parameters come from? Old input or new? If old, GetAxis or GetAxisRaw or GetKey or what?

[wanton sierra]

GetAxis

imma reopen my script

float x = Input.GetAxis("Horizontal"); float z = Input.GetAxis("Vertical"); Vector3 move = transform.right * x + transform.forward * z; cC.Move(move * speed * Time.deltaTime); velocity.y += gravity * Time.deltaTime; cC.Move(velocity * Time.deltaTime);

exactly like the brackeys tutorial

[spring creek]

Well GetAxis has smoothing already, so I guess suggesting that won't help haha.

I do see you call cC.Move twice though

[wanton sierra]

yes one is for gravity, one for movement

[spring creek]

That shouldn't be the issue, but you should only call it once. Add the gravity to your move vector and call it at the same time

Yeah, that's another classic Brackey issue we see a lot. It's bad form

[green anvil]

I need help with

 [HarmonyPatch(typeof(Character))]
public class CharacterPatch
{
    static int jumps = 2;
    [HarmonyPatch("AddInputMotionNormal")]
    public static void Prefix(Character __instance)
    {
        if (!__instance.OnGround && jumps > 0 && __instance.input.aButton)
        {
            __instance.velocity.y = __instance.jumpVel;
            jumps--;
        }
        if (__instance.OnGround && __instance.input.down)
        {
            Console.WriteLine("Presing down on ground");
            foreach (var obj in Resources.FindObjectsOfTypeAll<GameObject>())
            {
                int owp = LayerMask.NameToLayer("OneWayPlatform");
                if (obj.layer == owp)
                {
                    Console.WriteLine("Object is onewayplatform");
                    var box = __instance.gameObject.GetComponent<BoxCollider2D>();
                    box.transform.position += new Vector3(0, -0.2f, 0);

                    if (__instance.gameObject.GetComponent<BoxCollider2D>().IsTouchingLayers(owp))
                    {
                        box.transform.position += new Vector3(0, 0.2f, 0);
                        Console.WriteLine("Moving down");
                        __instance.transform.position -= new Vector3(0, 99, 0);
                    }
                }
            }
        }
    }

this works V ```
Console.WriteLine("Presing down on ground");
foreach (var obj in Resources.FindObjectsOfTypeAll<GameObject>())
{
int owp = LayerMask.NameToLayer("OneWayPlatform");
if (obj.layer == owp)
{
Console.WriteLine("Object is onewayplatform");
var box = __instance.gameObject.GetComponent<BoxCollider2D>();
box.transform.position += new Vector3(0, -0.2f, 0);

but   Console.WriteLine("Moving down"); doesn't

[wanton sierra]

I FIXED IT

well

not the brackeys issue

but

Had to uncheck "snap" in the project settings

[spring creek]

Ahhhh right. Thanks for checking back. I'll remember that for anyone else asking!

[green anvil]

help?

k

[spring creek]

Do you see Object is on Platform?

[green anvil]

yes i just doesnt move down

[spring creek]

I would put a breakpoint on that if statement containing "Moving Down" to see what the values are in the debugger

[green anvil]

k

doing it now

[tulip cosmos]

Hey again, I was wondering if I should worry performance-wise about events being fired very very quickly. Let's say I have a crazy futuristic weapon that can shoot like more than 1000 rounds per seconds, is it okay to have that many events in such a short moment ? (each event updates the GUI ammo text).
If it's a terrible idea, what is the best way to handle that ?

[steady moat]

Whenever you are talking about performance, the best is to actual do it and then profile. I am 99% sure that it wont affect performance and if it does it wont be for the reason you are worried for.

In your case, if your event fires less than once a frame, then it is still a gain to use event and not update loop.

[leaden ice]

Your frame rate likely won't even be that high

Anyway there's no significant performance difference between an event and a normal method call

[steady moat]

You are right, however with event you might find yourself updating more than necessary.

[safe ore]

is it possible to detect if an object is within your Frustum Gizmos FOV?

private void OnDrawGizmos()
    {
        if (!drawGizmos) return;

        // Draw the enemy's FOV Via Drustum
        Gizmos.matrix = enemyViewPoint.transform.localToWorldMatrix;
        Gizmos.color = enemyFOVcolor;
        Gizmos.DrawFrustum(Vector3.zero, enemyFOV, enemyMaxFOVDistance, enemyMinFOVDistance, enemyMaxFOVAngle);
    }

[tulip cosmos]

Alrighty, I'll keep these in mind. Thanks, both of you ! Super helpful

[steady moat]

You can use https://docs.unity3d.com/ScriptReference/Camera.WorldToViewportPoint.html

if the point is between 0 and 1 its in.

[safe ore]

would that not require using a camera on the enemy, im going to have a lot of enemies around the world so that would hit performance massively no?

[steady moat]

What you are trying to do ?

[safe ore]

have an enemy FOV, so if the enemy can see within the Frustum the player will be spotted

[steady moat]

Then just compare the angle.

[safe ore]

What do you mean?

[safe ore]

With Ray casts?