#archived-code-general

1 messages · Page 222 of 1

leaden ice
#

this is not good

sick crow
#

lol

leaden ice
#

don't do this

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just make a wrapper object

sick crow
#

thanks.

leaden ice
#

and serialzie that

sick crow
#

That's a problem for later

leaden ice
# 
[Serializable]
public class GameData {
  public List<PlayerData> playerDatas;
}```
#

make this and serialize it^

sick crow
#

I did something like that, and it yelled at me about [serializable]... honestly, let's just deal with the json sending thing for now

#

we have a chunk of json that does the job

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let's use that

leaden ice
#

sounds like whatever it was was a basic compile error

sick crow
#

Sure.

leaden ice
#

easily fixed with using probably

sick crow
#

ok

#

I'm in the wrong state of mind to fix that right now

#

let's focus on sending the json I have

#

right now it's not passing unity's type checker becuase namespace name 'Encoding' could not be found (are you missing a using directive or an assembly reference?)

#

trying to get that byte encoder

leaden ice
#

Well

#

as mentioned above

sick crow
#

byte[] bytes = UTF8.GetBytes(basicJSON);

leaden ice
sick crow
#

Yeah I tried using the Encoding namespace

#

it also objected to Encoding.UTF8.GetBytes

leaden ice
#

using System.Text;

#

Your IDE should auto suggest this stuff for you

#

If it's not, you should set it up. It will save you a ton of angst

sick crow
#

It's VSC, I use it for a lot of other things so I might have disabled that feature lol

leaden ice
#

Like pulling teeth to write anything without autocomplete

#

I'd prioritize that

sick crow
#

ikr lol

leaden ice
#

it's clearly wasting a lot of your time

sick crow
#

I agree

#

I had "Debugger for Unity" instead of "Unity" so I'm fixing that lol

#

ok fixed.

#

Now it's using the wrong version of "Post" or something.
Argument 2: Cannot convert from byte[] to string

# 
        using (UnityWebRequest www = UnityWebRequest.Post("http://localhost:5000/playerRanks", bytes))```
leaden ice
#

Actually looks like you should just be able to do :
UnityWebRequest.Post("http://localhost:5000/playerRanks", basicJSON, "application/json"); in modern Unity

sick crow
#

I've tried that before

#

but I have the error messages now so let me show you

# 
Argument 3: cannot convert from 'string' to 'byte[]'```
#

seems to still be using the wrong version of Post or something

leaden ice
#

oh right nvm that expects form data

#

For some reason Post doesn't come with a nice static method that takes a raw string or bytes

#

basically build it with Put and then just change the HTTP method to Post

sick crow
#

Can you use this with the context manager (I don't know if it's actually called a context manager in C# so bear with me)

leaden ice
#

not sure what you mean by that

sick crow
# 
``` <- this pattern
leaden ice
#

you mean the using statement?

sick crow
#

sure

leaden ice
#

of course

sick crow
#

ok, let me set it up and I'll run it past you

#

since this is in the context of a mod, testing it takes ages so I don't want to compile till I'm absolutely sure it'll work haha

# 
        byte[] bytes = Encoding.UTF8.GetBytes(basicJSON);
        using (UnityWebRequest www = UnityWebRequest.Put("http://localhost:5000/playerRanks", bytes))
        {
            www.method = "POST";
            www.SetRequestHeader("Content-Type", "application/json");
            www.SendWebRequest();```
leaden ice
#

yeah looks good

sick crow
#

Sweet let's see what happens

#

Nothing. Still no data in the body

leaden ice
#

print basicJSON

sick crow
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[{"name":"CPU 1","rank":0,"side":"","fleet":"","cost":""},{"name":"AirmanEpic","rank":3750,"side":"","fleet":"","cost":""}]

# 
        Debug.Log("Version 11");
        byte[] bytes = Encoding.UTF8.GetBytes(basicJSON);```
and I'm manually incrimenting every verion so I don't go insane lol
leaden ice
#

how are you reading it on the server

sick crow
#

this is ExpressJS

# 
app.post("/playerRanks",function(req, res){
    console.log("playerRanks")
    //get the data from the request
    var data = req.body
    console.log(data)
    res.send({result:false, message:"Airman says hi"})
})```
leaden ice
#

is it logging anything at all?

sick crow
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"undefined"

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basically there's no data

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........ shit

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should I be using .data

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no, .data is undefined too

leaden ice
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not an express js expert but do you have the app.use thing

sick crow
#

I don't believe so but let me just double check other known working code using express

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It appears to be at least possible that it's required, so I added it. testing now.

#

.... I feel very dumb now, because that worked!

#

What was the thing we were going to do to fix the nasty way of creating basicJSON?

leaden ice
sick crow
#

yeah.

#

ok, got that new class

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what do I do with it?

lean sail
#

Im making a central object pool which holds a dictionary of prefab, object pool. This pool is intended to hold everything that i pool
Dictionary<GameObject, ObjectPool<GameObject>>
Is there a clean way to reset values on these pooled objects when disabled? The problem is that these objects can be anything, so resetting a projectile might be different compared to something else.
I was in the middle of making a script to do this https://gdl.space/cevuhiyiku.cs but realized I would either have to accomodate for everything in ReturnToPool and use a bunch of null checks or use inheritance for each unique pooled object. I feel this defeats my purpose of having a central object pool.
Im looking for suggestions on what to do. Should I abandon the central pool, is there a cleaner way to reset values on the pooled objects, or is there some other magic i am unaware of?

west lotus
#

How about a IPoolable interface that implements a Reset method

lean sail
leaden ice
leaden ice
west lotus
#

Well I dont see a way to reset all thw different values without writing the code somewhere

lean sail
#

Idk i guess i was just wondering if I should even continue with a central pool, or maybe I can try to just copy the values from the prefab to the instance

leaden ice
#

I don't see how it matters if it's a central pool or not

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either way you need to reset your data somehow

lean sail
leaden ice
#

just do it in a script on the object

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I don't think there's a good way to get around writing the reset logic yourself

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Unfortunately Unity doesn't give us enough access to their serializer to do something like UnitySerialize.CopyValue(prefab, instance);

#

The closest thing we have is JsonUtility.FromJsonOverwrite but JsonUtility doesn't serialize UnityEngine.Objects effectively, it just serializes the instance id

lean sail
# leaden ice just do it in a script on the object

this is what i was doing above with PooledObjectHandler but i didnt really like the idea of making a ton of scripts to handle the different components. I also didnt like the idea of putting the logic for every single component in there then checking if the component is null before trying to reset. I might just end up putting them all in one script anyways and add reset methods to a delegate if the component exists

leaden ice
#

Every one of your pooled objects should have at least one custom script on it that is the "main" actor script for that object

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that script can be responsible for the reset

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it can implement an interface i.e. IResettable or just use OnDisable() to reset

lean sail
#

ah yea you're right, ill just man up and do that lol

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idk why I just have this mental block against doing it like that, even though it is the easiest/most understandable

swift falcon
#

Hey, less programming more of a general math question(?)
so, from this video I've been able to get the position of points in a circle by using a value from 0 - 1
https://www.youtube.com/watch?v=qzkOslgzuzo
and by using this code:

YouTube
LlamAcademy
Surround AI - Circle a Target | AI Series Part 27 | Unity Tutorial

Learn how to make your NavMeshAgents SURROUND their target, instead of just running to the center point of their target. In this tutorial we'll be implementing a simple solution to the "dumb AI" problem where your NavMeshAgents get bunched up and create a funnel or wedge when trying to follow a target.

We'll implement a simple AI Manager single...

▶ Play video
#

What I'm wondering is, and here's an image i made to visualize it

Let's say I wanted to move the red point by 90 degrees, BUT i want the green point to stay at the 0.25 mark
How do i make the units relative to any rotation?

unitycirclequestion.png
#

I'm not sure I've worded it correctly/makes sense so please tell me if you don't understand the question

lean sail
lean sail
# swift falcon

does this code even work? this looks off, sin(2pi) = 0 and cos(2pi) = 1
So the x isnt being changed from target.position

swift falcon
#

and if you look at the poorly made diagram the decimals mark where the points would be on the circle

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so sin(2 * pi * 0.25) and cos(2 * pi * 0.25) would be the green point on the circle

lean sail
#

honestly you could swap the sin and cos if you dont mind it going the other direction

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https://www.desmos.com/calculator/hoq7gjtdme
use the slider for r (0 to 1) if you want to see what i mean other direction. Since this is for enemy circling your player, i assume the direction it goes along the circle doesnt matter

deft torrent
#

hello, i have a problem with my code... can you help me ?

dawn dock
#

So post code use

#

!code

tawny elkBOT
deft torrent
lean sail
#

multiplying the entire thing by 0.25 would mean you travel along the circle 4 times slower (even though theres still no r included in your equation)

lean sail
tawny elkBOT
swift falcon
#

should've clarifyed

lean sail
#

i understand that, but you currently have no number in your equation which lets you go around the circle. Sin(2pi) is 0, you still need that 0 to 1 value included in it

lean sail
main shuttle
tawny elkBOT
deft torrent
#

Now, that happen

IMG_20231114_092836.jpg
#

It's normal ?

clever lagoon
# deft torrent thks

if you have a script with a compiler error when you open the project this will popup: not uncommon.

#

(p.s. please use screen shots, not photo's of the screen.)

simple egret
#

Especially when there's the Discord icon in that picture...

#

It's installed on your computer, use it lol

thin aurora
# deft torrent It's normal ?

Yes, because Unity has scripts that run in the editor the moment you open it. The point of this is to avoid these scripts from running an potentially breaking even more.

swift falcon
lean sail
# swift falcon Alright I came up with a pretty simple solution by using the rotation of the dot...

im confused what you mean by this, you said up above that

where it says 2 * pi, it isnt being multiplied by anything yet so it funcitonally doesnt do anything but in the 5:20 mark of the video, it is being multiplied by a decimal from 0-1, which marks where it is on the circle
You should already have this 0-1 value. This is being used to calculate where the dot should be on the circle. This whole formula doesnt make sense to use if you already have the dot

swift falcon
#

actually wait

#

forget what i said

swift falcon
narrow summit
#

Are there ways to get the vertex/tri count in runtime player builds? Basically the Stats window shows. https://docs.unity3d.com/Manual/RenderingStatistics.html It uses I guess something called UnityStats which isn't documented but does exactly what I need https://github.com/Unity-Technologies/UnityCsReference/blob/d0e1a5b25e8d3c8e1b4e6baf0073032d97254a0c/Editor/Mono/UnityStats.bindings.cs#L70

The semi-obvious way, is to manually add up vertices of visible meshes, but that's painful since it requires a system where you have a handle of all the meshes...

late lion
narrow summit
late lion
mild orbit
#

I am creating a terrain from a render texture that is filled with noise. Using terrainData.CopyActiveRenderTextureToHeightmap. Its working 'fine', but running in to two issues I am not sure how to solve.
Firstly, it seams values above a certain threshold (75, 80?) are getting negative values or something.
And secondly, the terrain is looking terraced.

Any ideas on either of these?

16ofsdt.png
ashen yoke
#

dont know about the flipping but the terracing may be caused by resolution mismatch

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afaik the terrain has +1 w/h or something like that

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at least you have to do something with +1 when importing raws

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can also be texture format

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filtering, something else

mild orbit
ashen yoke
#

and if you set the RT to 256?

mild orbit
ashen yoke
#

google those terracing issues for raw imports, solution probably the same

mild orbit
#

Hmm, looks like might have to do with the texture format issue. Will take some messing around. Maybe that will fix the other issue too (one can hope haha). Thanks!

hexed pecan
#

I had a similiar issue

#

Ah, didnt read your latest reply - you seem to be on the right track

steep herald
#

How do I read individual vertex data from mesh.GetVertexBuffer()?

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on the CPU that is

mild orbit
steep herald
ashen yoke
steep herald
#

@ashen yoke Yeah, I'm just not sure how to go from there. I can't find resources that indicate how to fetch the data from the vertexbuffer

ashen yoke
#

public GraphicsBuffer GetVertexBuffer(int index);

mild orbit
ashen yoke
#

GraphicsBuffer.GetData

#

id assume you need to provide an matching array of floats

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then read it as v3

ashen yoke
#

yeah

hard viper
#

Physics2D question: Manual simulation. Kinematic RigidBody2D has velocity, when I call MovePosition, then Physics2D.Simulate(fixedDeltaTime);
My rigidbody now has a different velocity. Q: Why?

weak gate
#

Has anyone created a application for video conferencing in unity? If so Please help me in this part I already asked this in StackOverflow but no response. Some Help would be appreciated. Thanks in Advance.

image.png
pulsar holly
fervent furnace
#

what are CS0165 and 1612?

#

and which lines?

#

there is a one in 33

pulsar holly
fervent furnace
#

probably cant implicit change float to bool

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i am wrong

pulsar holly
#

I don't think thats it...

fervent furnace
#

you are declaring a new set (or preSet) variables and assign it by itself ie int a=a+1; so you will get this error

ashen yoke
#

if (transform.position.y = -5.5)

#

=

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equality operator == assignment, replacement operator =

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int set = (set + 1);
you cant use a variable before it was initialized

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you already have int set declared in the class, as a member of that class

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writing int set within the method REdeclares it, as a local variable of the method

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declaration is preceded by type

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int type set name

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just set = (set + 1) will not redeclare it

pulsar holly
#

So what should I rename the code?

fervent furnace
#

you dont need any special operator to access class-level variables, just type its names

pulsar holly
#

So I should make it just set + 1?

mental rover
#

set++;

ashen yoke
#

or set += 1
or ++set
or set = set + 1

#

brackets are unnecessary

pulsar holly
#

The errors are gone, but there's a new problem, whenever it touches the bottom of the grid, the variables set and preSet won't change by 1.

fervent furnace
#

i just notice that the whole thing is in start

pulsar holly
#

So I should put it in update?

fervent furnace
#

probably, and
first. there is a operator called logical and (&&) eg if(A&&B){some codes}, "some codes" will be executed only if A and B is true
second, this line:

    if (puyoType == 1) ; in 18
hard viper
#

Start runs once when the behaviour enters the scene

quiet bear
#

I'm looking into bettering my code. Currently, it is doing what I intend on having it do. What else can I do to clean this up into something shorter?

using UnityEngine.Events;

public class Generate : MonoBehaviour
{
    public UnityEvent onGenerate;

    private bool generating = false;

    private float counter;
    private float waitTime;

    private int currentVal;
    private int addVal = 1;

    private void OnEnable()
    {
        StartGenerating();
    }

    public void StartGenerating()
    {
        generating = true;
        InvokeRepeating(nameof(CheckGenerate), waitTime, waitTime);
    }

    private void OnDisable()
    {
        StopGenerating();
    }

    public void StopGenerating()
    {
        generating = false;
        CancelInvoke(nameof(CheckGenerate));
    }

    private void Start()
    {
        InvokeRepeating(nameof(CheckGenerate), waitTime, waitTime);
    }

    private void CheckGenerate()
    {
        if (generating)
        {
            currentVal += addVal;
            onGenerate.Invoke();
        }
    }

}
mellow sigil
#

The generating flag is unnecessary

quiet bear
#

Thank you very much

rigid island
quiet bear
rigid island
leaden ice
#

This could be much more compact just using Update tbh:

public class Generate : MonoBehaviour {
  public UnityEvent onGenerate;
  public float waitTime;
  int addVal = 1;
  int currentVal = 0;
  float timer;

  void Update() {
    timer += Time.deltaTime;
    while (timer >= waitTime) {
      timer -= waitTime;
      currentVal += addVal;
      onGenerate.Invoke();
    }
  }
}```
#

but I suppose there's some elegance to a coroutine or to InvokeRepeating?

rigid island
quiet bear
leaden ice
#

you're just hiding it

quiet bear
#

at one point it was invokeRepeating in the Start method... lol

narrow summit
rigid island
quiet bear
#

I understand. I was trying to curtail a particular way of writing code to my liking and then specialize it.

ashen yoke
heady iris
#

i randomly switch how i do this every time

#

sometimes I subtract from a timer. sometimes i add to a timer. sometimes i just compare the current time to a goal time.

polar marten
leaden ice
#

due to precision limitations

ashen yoke
#

i dont understand, where is the inaccuracy coming from?

leaden ice
#

you would want the times to be 1, 2, 3, 4
but now you'll get 1, 2.05, 3.07, 4.09 etc

#

based on frame boundaries

ashen yoke
#

well i think lastTick + waitTime < Time.time should be lastTick + waitTime > Time.time yes?
no, it should tick once the realtime exceeds the previous tick time + wait

leaden ice
#

ah yes

#

you're correct - brain fart

#

the rest of what I said is still valid though

ashen yoke
#

yes you lost it because if you have 20 fps you will be losing ticks

leaden ice
#

if you do lastTick += waitTime, then 2 + 1 becomes 3 exactly

#

rather than 3.05 or whatever Time.time is currently

ashen yoke
#

this can be compensated for, when it is important

#

when you require a ticker accuracy that ticker will be built with compensation, accumulating actual time and potentially running several ticks a frame, like fixed update

#

the above is simply "fire as soon as update hits"

# 
  float nextTick;

  void Update() {
    if(nextTick < Time.time)
    {
        nextTick = Time.time + waitTime - (Time.time - nextTick);
    }
  }
#

this should compensate for overshoot i think

leaden ice
#

this is getting way more complex now though

ashen yoke
#

yes

leaden ice
#

and the more math we do with Time.time the less precise it is

fervent furnace
#

it is simply nextTick=nextTick+waitTime

ashen yoke
#

then you will be accumulating error, since Update will happen undefined time after the nextTick+waitTime

#

nextTick = 1.1, Time.time = 1.10024
lost 0.00024

fervent furnace
#

it will just compensate the time lost in future update
suppose wait time is 0.1 and you will expect the time different to enter if block in future update is around 0.0976s, if time.time is 1.2345 the expected time different is ~0.0655s

#

assume update rate>wait time

#

otherwise

for(;Time.time>=nextTick;nextTick+=waitTime){}
#

eg update frequency is 1s^-1 but wait time is just 0.1s

ashen yoke
#

i think youre right

fervent furnace
#

and what i written is the same as you
N=T+W-(T-N)=T+W-T+N (note that the next call to Time.time will return slightly larger value but here i ignore it)=N+W

polar marten
#

i'm not sure if you will ever get signed texture formats

#

by default

mild orbit
polar marten
#

it's also not likely to be an srgb versus linear issue

#

CopyActiveRenderTextureToHeightmap ought to deal with all these issues

#

but maybe it does not

mild orbit
polar marten
#

in your shader, try clamp ing the output values

#

so that they are between 0 and 1

#

or whatever it is in hlsl

#

have you visualized the render texture in the frame debugger? you can at least see if the heightmap has this glitch. it is also unlikely, but maybe it is sampling unexpectedly. clearly it seems to be nearest filtering, which is surprising

#

terrains in general perform poorly for macroscopically large smooth surfaces, like sand dunes. they are unusually bumpy. unity terrains also perform poorly for ridges.

mild orbit
polar marten
#

you should create a single channel 32 bit format, like RFloat

#

so set its format before you call Create

#

i think you will also want to create mipmaps

polar marten
#

and this is going to give you a heart attack

#

i think if you try switching to RFloat, you will not experience this issue

#

"But I don't know"

mild orbit
polar marten
mild orbit
#

I guess I just gotta manually normalize it to a 0 - 0.5 range

polar marten
#

so go ahead and do -1 in your outcolor

#

yeah

#

i think the range is from -0.5 to 0.5 but with RFloat it will not matter

#

and then clamp

mild orbit
#

Yeah I guess I will just have to put in another compute shader step that just remaps the range before applying it to the terrain. But thats fine.

mild orbit
worn crystal
#

how would I check if a ui element is touching any of the edges of the screen?

polar marten
#

you author shaders with floating point numbers, and the precision of the arithmetic in them is determined by various configuration. once you write to an 8 bit destination, they are taking a floating point number and shoving it into an 8 bit unsigned integer, where 0 = 0 and 1.0 = 255. so you get those 256 equally spaced values and that's it

#

RFloat is a single 32bit ordinary float, same meaning as in C#

#

so it can express a much smoother range of values, especially unevenly spaced ones

mild orbit
#

Right, makes sense, so why would ARGB32 not work and still result in stepping?

polar marten
#

i think it would work

#

your frame buffer is ARGB8 though

#

or ARGB 10 bit

#

it's never by default going to be ARGB 32 aka 4 32 bit floats

#

frame buffer meaning the texture that directx or whatever ultimately draws to the screen

#

it doesn't pack a 32 bit float value into the 4 bytes of ARGB

#

i mean, that's what the format RFloat is

mild orbit
#

Looks like ARGBFloat works, but ARGB32 results in stepping. interesting

polar marten
#

yes, because you are ultimately returning values 0 - 1 in your shader

#

which are preserved directly in float

mild orbit
#

Also, didn't know the default for the render texture is whatever the frame buffer is. Good to know!

polar marten
#

and float can represent those without issue, it can represent fine grained differences between floats in the 0-1 range

#

an integer cannot

mild orbit
#

Oh, is ARGB32, not floats but integers?

polar marten
#

naturally, returning 1.0 as an out color in your shader does not correspond to 3e38 or whatever it is

#

no

#

ARGB32 is 4x 8 bit integers aka unsigned bytes

mild orbit
#

Ooh, that makes sense why it is getting the stepping then (should of read the doc comment for it I guess)

#

Thank you very much! 😄

mild orbit
worn crystal
#

ugui, im assuming i do some trickery with GetWorldCorners

#

odd that it returns world position values but they seemed to be mapped to screen resolution at least?

#

im assuming ive gotta do something like, if i want to check if the ui is touching the left edge id compare one of the left corners to see if its pos is less than 0, on the other side it would depend on screen resolution (id compare a right side corner to see if its pos is greater than the screen res width?)

mild orbit
#

Sounds about right, but you could probably use the canvas rect I think?

worn crystal
#

wouldnt that only work if the parent canvas fills the screen?

mild orbit
#

Yeah, guess it depends on the use-case

worn crystal
#

i need to know the global space coords of the rect to do this so i think this should work

#

again, weird that it decides to use Vector3 as its return value though, def threw me off

hard viper
#

very happy my physics engine is finally coming along

#

ty to everyone elping out

polar marten
eager steppe
#

Does anyone know why using Directory.EnumerateFiles or Directory.GetFiles can work weird on android? I'm trying to use this code to get all of the .mp3 files in the streamingAssets folder:

   public void RefreshAllAudios()
    {
isRefreshing = true;
Songs.Clear();
        SongPaths = Directory.EnumerateFiles(Application.streamingAssetsPath, "*", SearchOption.AllDirectories)
        .Where(s => s.EndsWith(".mp3")).ToArray();

        StartCoroutine(DownloadAllAudios());
    }```

But for some reason it renders a "DirectoryNotFoundException".

The weird thing is that I can actually load these files individually with a simple UWR, but all I'm trying to do with this code is get all of the files paths - and that doesn't work.
knotty sun
eager steppe
#

After getting all the paths into SongPaths with RefreshAllAudios(), i loop through them and download them via UWR

knotty sun
#

No, it's not possible, Directory works on physical folders, StreamIngAssets is not a physical folder on Android

eager steppe
#

dang, alrighty

#

thank you

polar marten
hard viper
#

apparently unity is supposed to support c# v9? Is this true? Is there a way to turn this on or something

rigid island
#

2021+ irc

hard viper
#

i thought my project is 2022

#

and I think I’m still stuck in C#7

#

which is suck

rigid island
#

if it is then its c#9

hard viper
#

i don’t even have the file keyword

rigid island
hard viper
#

nvm that is C#11

worn crystal
rigid island
#

their .net hella old

rich kestrel
#

Hi, i got a question about unity localization
I have a big json that contains some object infos in english and in french. In my script, i store both.
For the moment, i saw that we can swap some text based on a translation table.
But is it possible to have an event in my script that is trigger when the language change so i can internally change the text displayed ?

hard viper
#

we get all these experimental half-baked features. But then the language itself doesn’t even fully support the main version of the main language that came out 3-4 years ago

mild orbit
rigid island
#

oh wait its reality lol

#

new versions of .net are more performant

mild orbit
#

They are working to port to .NET Core, just gotta give them time, they are moving the GC to the .Net Core one as well, so it takes time to rewrite things to support it. Can't wait for it, going to be nice! 😄

hard viper
#

that is going to be under the new ToS with potential revenue share tho

rigid island
#

if it gets me newer .net so be it

spring creek
lean sail
rich kestrel
lean sail
rich kestrel
#

I was saying, how can i subscribe to the event ?

clever lagoon
rich kestrel
#

i check for this 🙂

unkempt meadow
#

any way to know how much time remaining I have for my build to build?
could be 5 mins, could be 5 days, I don't know that

lean sail
tawny elm
#

im working on a little clone of that one watermelon game. any suggestions on how i would detect the collision between two balls and merge them? i know normal colission detection but im not sure how to get around this one. if two of the same ball collide, they would merge to become a bigger ball, like 2048.

image.png
dire pier
#

Hi, im following a guide to make a game. (https://www.youtube.com/watch?v=sWKk5ytBCTE&t=853s) Right now i want to consume my 'stick' with right clicking. But i got an error. Provided my code + unity.

unityerror.png unityerror2.png
YouTube
Mike's Code
3D Survival Game Tutorial | Unity | Part 11: Consuming, Hovering Ov...

#unity #survivalgame #3d
In this episode of our 3D survival game tutorial series, we will create a few different features.
First of all, we are going to add the option to hover with our mouse on an item and see its details.
Then we are going to add the ability to consume (eat/drink) our items.
Lastly, we are going to create a way to remove item...

▶ Play video
leaden ice
spring creek
leaden ice
dire pier
#

How can i solve this? @leaden ice Thanks for helping.

rich kestrel
dire pier
#

it gives an error 😦

tawny elm
#

Overall it's just I dunno how to do the thing and I wanna know how

dire pier
#

the problem is that i got no references in the code and my tutorial have. Still cant figure out how to solve this prob

image.png
leaden ice
#

You can compare instance IDs to make sure only one of the balls runs the code

#

e.g.

if (gameObject.GetInstanceID() < collision.gameObject.GetInstanceID()) return;```
leaden ice
#

When you call those functions from some other code, it will register as references to them

dire pier
#

cant find it. i followed the tutorial and copied the scripts... i understand what you mean. @leaden ice

leaden ice
#

can't find what

dire pier
#

its at 25:50 in the video. and i added them as you can see in the code: https://www.youtube.com/watch?v=sWKk5ytBCTE&t=853s

YouTube
Mike's Code
3D Survival Game Tutorial | Unity | Part 11: Consuming, Hovering Ov...

#unity #survivalgame #3d
In this episode of our 3D survival game tutorial series, we will create a few different features.
First of all, we are going to add the option to hover with our mouse on an item and see its details.
Then we are going to add the ability to consume (eat/drink) our items.
Lastly, we are going to create a way to remove item...

▶ Play video
#

thankyou for helping sir

leaden ice
dire pier
#

im picking up an object. when im right clicking the object i get an error. Right now im trying to solve it. i see the problem that i dont have references and he has. but i have the exact same code.

leaden ice
#

That would be the first place to start

dire pier
#

NullReferenceException: Object reference not set to an instance of an object
InventoryItem.healthEffectCalculation (System.Single healthEffect) (at Assets/Scripts/InventoryItem.cs:99)

leaden ice
#

PlayerState.instance is null

#

we already discussed this

dire pier
#

float healthBeforeConsumption = PlayerState.Instance.currentHealth;

leaden ice
#

it has nothing to do with those functions

#

PlayerState.Instance < this is the only thing that could be null and cause that error here

#

the function is irrelevant

#

you are trying to call a function on a null reference

#

It's like If I told you to open the car door, and pointed at an empty parking lot

#

there is no car

#

in this case, there is no PlayerState to get the currentHealth of

#

You need to make sure PlayerState.Instance has been assigned properly

#

Typically a static singleton instance property like that is assigned in Awake of the script in question

dire pier
#

thanks for the advice. i got the singleton in the player state script and the function currentHealth

image.png
leaden ice
#

See anything wrong here?

#

You probably don't since you're not following C# naming guidelines anywhere

#

but in C# method names need to start with capital letters

#

In particular Unity's message is called Awake not awake

#

this code will not run

#

Yeah I don't like this tutorial

#

it's teaching you bad naming practices

dire pier
#

omg

#

thank you so much. got any tips for me?

#

for the good practice

#

you are a great human being for helping me and patience @leaden ice 🙂

leaden ice
#

and recognize that much of Unity's API doesn't follow it for historical reasons and that's ok 😂

#

If you see a function name with a lowercase, it should immediately look "weird" to you

rigid island
narrow summit
#

Some of the modules which have their own doc pages, do actually have a more detailed list

dire pier
narrow summit
narrow summit
dire pier
#

but it works in my code i guess..

rigid island
#

lowercase for private /local variables is fine

#

methods / public ones should be capital(Pascal case)

leaden ice
narrow summit
# dire pier but it works in my code i guess..

It'll work. Okay think of it this way
If unity is calling the function, and not you, it'll work ONLY if its the exact casing as what Unity expects it to be. So awake() will not work as Unity expects Awake()
If you're calling it, it'll work, but, its bad practive. C# conventions PascalCase for functions, i.e. SetHealth and not setHealth

dire pier
#

so you see problems like this earlier because you have a basic rule for it?:)

#

ah i understand

narrow summit
dire pier
#

it will work but with the build in functions it won't like the "awake" function that has to be "Awake"

#

thank you guys ❤️

tawny elm
tawny elm
steep herald
#

Is there a way to disable frustum culling for meshes rendered with graphics.DrawMeshInstanced?

gray mural
#

Hello, does somebody know how to make a parameter for the method MyMethod that takes a float v and expects a string that used that float?
E.g. it returns that string with the value it wants.

MyMethod(v => $"The value: {v}!");
somber nacelle
#

well this v => $"The value: {v}!" is a Func<float, string>

gray mural
somber nacelle
#

how is it not?

dusk apex
#

Then what is v => ... if not a function?

steady moat
#

What is the type if you put it in a var then ?

gray mural
leaden ice
#

due to the if statement

zinc parrot
#

Whats the reccomended way to store data in a prefab that has a LOT of data? I want to store a hierarchy formated gameobject that happens to have a script on it that stores a huge amount of data

thin hollow
#

Is there a way to be able to assign a reference to a simple class (not mono behavior) in a scripted object? I'm making an item system, and I wanted to make item functionality to be in interchangeable class blocks that decide what item does. Right now my items have their properties defined by the scriptable object instances of ItemDefinition. I've tried to add a variable for parent class of these object logic blocks I'm making, and make it [serializable], but it doesn't show up in the Inspector. Is there a way to go around it, or it would be better to ditch the POCO class ideas and just create a bunch of inheritors from the ItemDefinition and create scriptable objects in unity from them instead? Though this loses the "interhangeable modular" part of my idea, still hardcoding what object can do without a way to easily change it, but now in a scriptable object...

leaden ice
zinc parrot
#

fair
like
max of 1 gig of raw data

leaden ice
#

you should explain what kind of data this is, how much of it there is, and what the access patterns will be

narrow summit
zinc parrot
#

its a bounding volume hierarchy and my own triangle format to allow for raytracing in a compute shader
I want to get a way to store this and be able to load it in a format that is stored in the project folder

zinc parrot
leaden ice
#

does it all need to be in memory at once?

#

Parts of it?

#

How is it addressed?

zinc parrot
#

it cannot be loaded partially

#

its just big arrays

leaden ice
#

also when /how is it created?

#

At edit time?

zinc parrot
#

created at edit time yes
loaded in edit or play or build

leaden ice
#

I'd just include the binary file in StreamingAssets I guess

zinc parrot
#

after write it doesnt need to be modified

#

but I wanted to package it as like a single prefab thing so its just a drag and drop into the hierarchy to load it up along with the gameobjects/meshes it targets naturally

leaden ice
#

you can include it as a TextAsset

#

with .bytes file extension

#

it will take quite some time to load though

zinc parrot
#

wouldnt that then be a seperately saved file? I need to store the prefab anyways

narrow summit
#

I don't see why it needs to exist in an hierarchy

leaden ice
zinc parrot
#

I was thinking of just doing a binary text file but I wanted to see if there was something better for this

leaden ice
#

public TextAsset MyTriangleData;

zinc parrot
#

hmmm ok yeah I can have a folder of textassets then I guess

#

that will be the most sane way
but is there a sane way to have it packaged inside the prefab or is that just a bad idea? really focused on the whole one physical file thing for easy transfer between projects and loading

narrow summit
#

A prefab, a text file, and a script on the prefab to load and do things to the loaded file sounds sanest... relatively

leaden ice
#

but I feel like the TextAsset is much cleaner

#

and easier to reason about

zinc parrot
#

hmmmm ok

leaden ice
#

plus if it's a serialized field on a MonoBehaviour - you don't really have the best control over when it's loaded/serialized etc

#

it will probably slow the unity editor down a lot

zinc parrot
#

indeed it does lol

leaden rover
#

Hey guys. I am trying to animate a texture or find some sort of way to make these yellow bulbs on this sign create a sort of chaser light effect where they spin around the circle ring
Image
everything I have tried so far has failed miserably
ive tried animating the squared texture in hopes it moves on each square from bright to dark, emission stuff and just animating literal point lights and after I add like 5 point lights unity starts only showing a few of them on

polar marten
leaden rover
#

of the texture?

#

i have been using code to make the texture move but it isnt working right]

leaden ice
#

I don't think they want to rotate the lights

#

more just turn them on/off

leaden rover
#

yes

leaden ice
#

in a rotating pattern

leaden rover
#

exactly

#

in a chaser pattern

#

so it appears to be goings around in a circle

leaden ice
#

I feel like a custom shader would be the best approach

#

based on some parameters (perhaps a bitmap integer) you can programmatically control individual lights

#

(toggling between two input colors)

#

and then in C# you can do the chaser animation by setting the shader param

#

The lights would be distinguished in the fragment shader by UV coords

leaden rover
#

I have no idea how to go about that cause the material covers all the bulbs like they aren't separate objects

leaden ice
#

right hence the shader

#

you could of course make them all separate objects and just switch their materials (or the colors on the materials)

leaden rover
# 
using System.Collections;
using UnityEngine;

public class LightController : MonoBehaviour
{
    public Material animatedMaterial;
    public int rows = 5;
    public int columns = 5;

    private int[,] lightData; // 2D array to store light information

    void Start()
    {
        InitializeLights();
        StartCoroutine(AnimateLights());
    }

    void InitializeLights()
    {
        lightData = new int[rows, columns];

        // TODO: Initialize the lightData based on your requirements (e.g., bitmap or procedural generation)
    }

    IEnumerator AnimateLights()
    {
        while (true)
        {
            // TODO: Update lightData based on your animation logic

            // Pass the updated lightData to the shader
            Vector4 lightDataVector = Flatten2DArray(lightData);
            animatedMaterial.SetVector("_LightData", lightDataVector);

            yield return null;
        }
    }

    Vector4 Flatten2DArray(int[,] array)
    {
        int length = array.GetLength(0) * array.GetLength(1);
        int[] flattenedArray = new int[length];

        int index = 0;
        for (int i = 0; i < array.GetLength(0); i++)
        {
            for (int j = 0; j < array.GetLength(1); j++)
            {
                flattenedArray[index] = array[i, j];
                index++;
            }
        }

        return new Vector4(flattenedArray[0], flattenedArray[1], flattenedArray[2], flattenedArray[3]);
    }
}
#

am i on the right path?

leaden ice
#

why is it in rows and columns?

#

I would expect it to basically just be a single array

leaden rover
#

I don't know what I'm doing tbh

dire crown
#

What's the difference of Disposing and Releasing a compute buffer?

dire crown
leaden ice
#

it basically just calls Release

#

IDisposable is what lets you do:

using (ComputeBuffer cb = new(...)) {
  // do stuff with it
}

// it's automatically disposed here```
somber nacelle
dire crown
#

So which one should I call?

#

It doesn't matter?

leaden ice
#

either way

#

they do the same thing

somber nacelle
#

it doesn't matter, they do the same thing

dire crown
#

Okay

brittle oyster
#

Which is most efficient, or does it even matter:

  1. each of my chunk objects containing a reference to the world object in their individual scripts
  2. a static world reference in my chunk script (there only 1 world script)
  3. World script singleton

Chunks may be using this reference many thousands of times per frame

hard viper
#

if I'm not putting classes in namespaces throughout my project... could that be slowing down my compiler/roslyn analyzer?

lean sail
earnest gazelle
#

Can we treat sprite atlas asset created in the unity as a texture and pass it into a shader/material in the inspector?

brittle oyster
#

Ok cool, thank you

brittle oyster
#

In Properties{} you can define this type of property, which'll show up in the inspector when you select a material using your shader

image.png
#

Assign your texture atlas and voila

untold siren
#

Does anyone if I can extend Cinemachine's CinemachineInputProvider script to allow for a modifiable mouse sensitivity? I'm assuming this shouldn't be that difficult to achieve?

leaden ice
untold siren
leaden ice
#

FreeLook has it

#

If you're using that

somber nacelle
untold siren
#

I could just map two floats to a var and then set the speeds from within the aim of the vcam it seems

spare island
# 
m_animator.SetInteger("destroyState", 1); // Normal animation <-- null reference

im thoroughly confused

image.png image.png
untold siren
somber nacelle
leaden ice
untold siren
spare island
#

and I checked, there's only one tutorialnote component on it

untold siren
#

my curse is always assuming the most complex route of things when the solution is right in front of me lmao

leaden ice
#

Instead of the scene instance

spare island
leaden ice
spare island
leaden ice
#

Or HashSet

spare island
leaden ice
#

Object.FindObjectsOfType<Note>()

spare island
#

im curious though, I was running Destroy() on the prefab, what does that do?

leaden ice
#

It will generally just give you an error

#

There's a special override of DestroyImmediate that will let you actually destroy prefab components and objects

spare island
#

oh i guess i closed the game when it dropped the first exception

#

so i never saw the one from trying to destroy a prefab

leaden ice
#

Yes the exception that came before will stop the code execution

spare island
#

ok, works now thanks

#

is there a way i can profile which sounds are taking the longest to load?

#

i get big lag spikes from the audio system when i activate certain objects and they load their audioclips

untold siren
#

follow up to the cinemachine stuff, I can set the sens like this, correct?

        firstPersonCam.GetCinemachineComponent<CinemachinePOV>().m_VerticalAxis.m_MaxSpeed = 1f;
earnest gazelle
#

sprite atlas is a unity asset and not a texture
.spriteatlas

brittle oyster
#

Oh yeah you’re right, I thought you were talking about a texture array

#

You can get the texture 2d of a spriteatlas with .texture I believe

#

Then you’d grab a reference to your material and use .SetTexture() on it

pulsar holly
hexed pecan
#

SpriteAtlas doesn't seem to have .texture, only sprite does

stark sun
hexed pecan
pulsar holly
#

I mean with a +

hexed pecan
#

You really should just learn C# before asking the most basic questions here.

#

No offense, that's just how it goes

hard viper
#

if you don't use namespaces to group together classes, and your project keeps growing, will that slow down the IDE?

simple egret
#

I'd say only when the IDE starts up. VS uses incremental parsing, so it only parses the code that changed, not the whole code base
Only valid for Intellisense and static analysis of the code. Compilation is still done on the whole code base, you can use assembly definitions to split the project into multiple assemblies, to speed up compilation of a single assembly

#

But namespaces are more of an organization thing, not a performance thing
One namespace for player stuff, one for the weapon system, etc.

proper pier
#

Could someone take a look at my implementation of syncing ticks across clients and servers: I don't know why it isn't working, i've tried estimating latency with so many different approaches but nothing seems to work https://hastebin.com/share/qoxiyesapu.csharp

Hastebin

Hastebin is a free web-based pastebin service for storing and sharing text and code snippets with anyone. Get started now.

spare island
#

If you only use one namespace you're compiling all of the code every time instead of just portions of the code that are relevant to eachother

polar marten
#

why are you trying to estimate latency

spare island
#

No reason to recompile GUI scripts that have nothing to do with the script you were just editing like an AI or something

proper pier
spare island
#

Personally im lazy as fuck and dont use namespaces tho unless its very obvious it should be in its own namespace, otherwise causes problems with trying to use plugins

proper pier
polar marten
stark sun
hexed pecan
spare island
hexed pecan
#

You can have multiple namespaces in an assembly

spare island
#

Right but assemblies are tied to namespaces are they not?

hexed pecan
#

But using namespaces doesn't necessarily mean you are even using assemblies

spare island
#

True

polar marten
#

does that make sense?

#

you don't need to involve time at all

#

your stuff is confusingly named

proper pier
#

the delay from the server rpc doesn't matter because it doesn't actually get the value until after that delay

polar marten
#

you are making things very hard on yourself

pulsar holly
spare island
# 
        private void Start()
        {
            ExitGame.OnExitActions.Add(Task.Delay(delayInMilliseconds));   
        }

        public async void BeginExit()
        {
            // Run all exit game actions and wait for them to complete
            await Task.WhenAll(OnExitActions.ToArray());

I feel like this should work but i dont know what im doing wrong, the top method is intended to just add a 5 second delay task

#

However it seems Task.WhenAll quits immediately

proper pier
polar marten
proper pier
spare island
polar marten
#

on windows, you don't have a chance to do any work when the user hits the X button on the window. otherwise, you can put stuff in a quit.

hexed pecan
polar marten
#

anyway, the task.delay is run immediately

spare island
polar marten
#

so it's already elapsed by the time you quit

hexed pecan
#

@pulsar holly Talking about this line specifically cs if (transform.position.y == -5.5)

polar marten
spare island
# polar marten so it's already elapsed by the time you quit 
        public async void BeginExit()
        {
            // Run all exit game actions and wait for them to complete
            await Task.WhenAll(OnExitActions.ToArray());

            // Shut game down
            UnityEngine.Debug.Log("All shutdown tasks complete. Continuing to shutdown...");
            Application.Quit(0);

            if (Application.isEditor)
            {
                UnityEngine.Time.timeScale = 0;
                UnityEngine.Debug.Log("Application quit.");
            }
        }

heres the full context

polar marten
#

so as soon as you create a task.delay

#

the timer starts

stark sun
#

Adding modifiers

spare island
#

Application.Quit() is not run until AFTER the tasks are complete

polar marten
#

just focus on what i am saying

#

about task.delay

hexed pecan
#

@pulsar holly Also this if statement does nothing because it has a semicolon ; at the end:cs if (puyoType == 1) ;

proper pier
spare island
#

i want it to return the task when the delay ENDS

proper pier
spare island
#

im pretty sure Task.Delay is not supposed to return until the delay has elapsed

hexed pecan
#

print A -> wait a second -> print B

spare island
hexed pecan
#

Btw you don't need ToArray, it accepts a list (if that's a list?)

spare island
#

Oh wait i should check the obvious stuff

#

Need to make sure its actually adding the task

#

delay is set to 5000 which should be 5 seconds

image.png
polar marten
#

Which is a long time ago

#

By the time you quit it has elapsed

pulsar holly
polar marten
#

Think deeply about what I am saying

spare island
polar marten
#

Thank you

hexed pecan
spare island
# polar marten Thank you

ok this may be a dumb workaround but i added an event that is invoked when the game is about to exit and anyone who wants to can subscribe to that event, and when the event is called everybody will add their tasks to the task queue

#

or i guess it wouldn't be a task queue it would be something else because i believe tasks run in parallel

#

it works! so who cares if its stupid

image.png
#

for some reason my game is starting at timescale 0 now though

#

that seems a bit strange..

hexed pecan
#

Check Time settings

spare island
# 
            if (Application.isEditor)
            {
                UnityEngine.Time.timeScale = 0;

am i setting the correct timeScale?

#

is there like a seperate timescale specifically for the unity editor

hexed pecan
#

I don't think Time is really a thing during edit mode 🤔

#

What are you trying to do?

spare island
#

but when I start the game again its still at 0 which is strange

#

huh looks like i did set the editor's timescale..

image.png
#

how do i edit it so its just the timescale in-game and not outside of play mode?

cosmic rain
#

Play mode is an editor app as well🤷‍♂️

hexed pecan
#

Is that in OnApplicationQuit?

spare island
cosmic rain
# 
Whether the game is running inside the Unity Editor (Read Only).

Returns true if the game is being run from the Unity Editor; false if run from any deployment target.
spare island
#

oh i see

spare island
#

shouldn't that be something that reverts after playmode ends

hexed pecan
#

/When

spare island
# hexed pecan Where are you calling this though? 
        public async void BeginExit()
        {
            UnityEngine.Debug.Log("Beginning shutdown tasks.");

            // Initalize shutdown tasks, which will add exit tasks to be completed
            OnPreGameExit?.Invoke();

            // Run all exit game actions and wait for them to complete
            await Task.WhenAll(OnExitActions.ToArray());

            // Shut game down
            UnityEngine.Debug.Log("All shutdown tasks complete. Continuing to shutdown...");
            Application.Quit(0);

            if (// are we playing inside of the unity editor rn)
            {
                UnityEngine.Time.timeScale = 0;
                UnityEngine.Debug.Log("Application quit.");
            }
        }
#

right after the exit button is pressed

#

is it because im doing it after application.quit()? its my understanding application.quit doesn't do anything inside of the editor

hexed pecan
#

So after Application.Quit

spare island
hexed pecan
#

Maybe it switches to editor mode before the method finishes? Like instantly after Application.Quit

cosmic rain
spare island
#

ill try putting it before application.exit

hexed pecan
#

Doing logic after any 'Quit/Exit' command is kinda sketch anyway

cosmic rain
#

But what's the point of setting timescale on app exit?

spare island
cosmic rain
spare island
#

well everything will stop

cosmic rain
#

Ah, because it wouldn't quit the play mode?

spare island
#

(well most things)

#

ok putting it BEFORE application.quit() works

#

so im assuming application.quit() does actually do something inside of the editor its just not very obvious

hexed pecan
#

Yeah that's definitely something that should be in the docs but isn't

spare island
#

the docs lie

hexed pecan
#

It has a setter

spare island
#

i cant even remember when i started doing the timescale thing, its just a habit i got from the beginning

#

i never thought to use any kind of unity GUI function to just quit the game

spare island
#

do I need to do an # if UNITY_EDITOR for this using?

image.png
#

(i dont want to build again to test i just did a build like 20 minutes ago)

somber nacelle
#

you'll need to wrap your entire EditorApplication line in a #if
i recommend just using the fully qualified name on that line so you don't also need to wrap the using directive for it

spare island
noble heath
#

How to detect if build is being made on unity cloud build? Any macro/preprocessor define?

spare island
#

or its a string so maybe string.IsNullOrEmpty(Application.cloudProjectID)

polar marten
# 
public async void BeginExit() {
 await Task.WhenAll(Task.Delay, ...);
 UnityEngine.Debug.Log("All shutdown tasks complete. Continuing to shutdown...");
 Application.Quit(0);
}
#

don't use this array at all

#

just call your methods

#

use unitask

#

you're going to have problems unless you are on unity 2023

#

problems with vanilla async

spare island
# 
        var incrementValue =
            (100 - randomObjective.CurrentObjectiveProgress) / 100.0 > rnd.NextDouble() * 0.075 ? rnd.Next(0, 3) : 0;

i just came across this line that supposedly i wrote and yet it took me a good 2 minutes to figure out what it does

harsh steeple
#

Not sure where this fits in channel wise, but does anyone know why when I teleport, the game teleports me in the ground? Note: I am making a VR simulator and allow the user to change their locomotion system.

spring creek
#

Is your model the root? The center of the object is transform.position. so if you set the y of that to 0, you'll be half in the ground if the transform has any height

leaden ice
harsh steeple
#

There is no code as it just the unity XR toolkit with just dragging thing into place. What I have worked in Unity 2021, but i changed things to the 2022 version (which i know I shouldn't do, but my project wasn't opening so i deleted and reinstalled everything) and now the movement stuff is broken.

#

Not sure what else I can say. Unity learn is what I have used for this and everything worked fine until I updated. I've reconstructed the whole XR rig, and still don't work. Feel like they changed something that isn't commonly known

dusk apex
#

Is this a coding question?

harsh steeple
#

No, but not sure where else it fits in the other channels either. So I just defaulted to here

spring creek
spring creek
harsh steeple
#

Ok. Will try there. Sorry. Kinda panicing because what I have is my senior project

noble heath
spare island
nocturne anvil
#

Hello, I just downloaded the vivox version 16 on my project but I always get the DLLNotfound Exception

cosmic rain
spice dragon
#

Hey guys, I wanted to extend a class from a plugin without modifying the original scripts so I created a partial class in a new script but now I am getting the following error.

Missing partial modifier on declaration of type fruits; another partial declaration of this type exists GroceryStores,

So my understanding was you can create a partial class from a class but after investigation it turns out the original class now also have to be a partial classes.

How do I go about this extending the class without modifying the original class and maintaining all current code refences to the class, wrapper and composition over inheritance wont work as both these require me to change all existing references.

cosmic rain
#

The only way is inheriting the class and adjusting all the relevant instances to be of the extended type. There's no other way.

#

There are extension methods too, but I'm not sure if that's what you want.

spice dragon
#

I am currently looking at the extension method so hopefully this one plays along :0

cosmic rain
#

If you could just easily modify a class from a library and make existing code use these changes, that would be a security/encapsulation disaster.

spice dragon
#

agreed, so sad the partial class does almost exactly what I wanted...

Inheritance will also not solve this issue of having to go into all existing and future plugin code and update it every single time...

#

Okay extension methods could work, will give you an update later thanks for your insights!

uncut vapor
#

Hey
I need something like notifications whenever someone sends a message
Always checking the (MySQL)database for chnages seems very inefficient, so what should I use for online events or something like that?

spice dragon
#

You will need to create triggers for the changes you want to tract, then within your trigger logic you can implement something like RabbitMQ, Apache Kafka then you will need to process the notifications and need a service for that or you can use pushbullets https://docs.pushbullet.com/

tropic surge
#

!ban @pseudo hamlet Just here to buy disc accounts

tawny elkBOT
#

dynoSuccess hitesh5556 was banned.

wide quest
#

Hi there, so just recently I decided to get back into trying game development after quite some time off just doing absolutely nothing with it. With that SUPER long break (I'm talking like 2-3 years) I have forgotten how to code.

So I went to Chat gpt to generate a code for the player controlls using rigidbody, so I can see if I remember at least some of that code just by looking at it. I didn't.

After some time of going back and fourth with chat gpt, I gave up with it because I felt like I was getting nowhere. So I am now asking you guys for help.

My problem is that, everytime I go to move the player around every time I test it, it seems to roll around randomly in every direction even though I have locked the rotation in the code.

It's still doing it and I do not like it at all. So, I was wondering how to go about it fixing this issue? My mind is blank and got no idea what else to do. It's a completely brand new project to so it couldn't be something with the project that's at fault. Like a corrupted file or something.

FYI: I am currently not at my pc atm.

Thanks in advance! 🙂

mellow sigil
#

Come back when you're at the PC and post the code

#

and stop using ChatGPT

wide quest
#

ok, that will only take me maybe 5 mins. 🤣

spice dragon
#

Code could be it but I will like to see what your rigidbody setings are

wide quest
#

settings? or the code??

#

or both?

spice dragon
#

both will work but ChatGPT is more than capable or creating a simple player controller but it could be both so ya please send as a snippet of both

wide quest
#

ok so firstly, here is my current code:

#

void Start()
{
rb = GetComponent<Rigidbody>();

    //Freeze Rotation:
    rb.freezeRotation = true;
    mainCamera = Camera.main;
    Cursor.lockState = CursorLockMode.Locked;
    Cursor.visible = false;
}

void Update()
{
    // Player movement
    float horizontalInput = UnityEngine.Input.GetAxis("Horizontal");
    float verticalInput = UnityEngine.Input.GetAxis("Vertical");
    Vector3 movement = new Vector3(horizontalInput, 0f, verticalInput).normalized;
    rb.velocity = transform.forward * verticalInput * moveSpeed + transform.right * horizontalInput * moveSpeed;

    // Player rotation based on mouse input
    float mouseX = UnityEngine.Input.GetAxis("Mouse X") * rotationSpeed;
    transform.Rotate(Vector3.up * mouseX);

    // Camera rotation based on mouse input
    float mouseY = UnityEngine.Input.GetAxis("Mouse Y") * rotationSpeed;

    // Invert the mouseY input to make it feel more intuitive
    mouseY *= -1;

    // Rotate the camera up and down
    cameraRotationX += mouseY;
    cameraRotationX = Mathf.Clamp(cameraRotationX, -90f, 90f);

    mainCamera.transform.localRotation = Quaternion.Euler(cameraRotationX, 0f, 0f);
}

}

#

you mean the settings in vs, right?

#

oh! Could it be that I might not have somehow updated vs?

spice dragon
#

I wanted to see the rigidbody component also but this code will do, one sec.

#

here you go, this should fix it.

Replace the entire player movement

// Player movement
float horizontalInput = UnityEngine.Input.GetAxis("Horizontal");
float verticalInput = UnityEngine.Input.GetAxis("Vertical");

Vector3 movement = new Vector3(horizontalInput, 0f, verticalInput).normalized;
Vector3 velocity = (transform.forward * verticalInput + transform.right * horizontalInput).normalized * moveSpeed;

rb.velocity = new Vector3(velocity.x, rb.velocity.y, velocity.z);
wide quest
#

just to clarify, just this part, right?

// Player movement
float horizontalInput = UnityEngine.Input.GetAxis("Horizontal");
float verticalInput = UnityEngine.Input.GetAxis("Vertical");
Vector3 movement = new Vector3(horizontalInput, 0f, verticalInput).normalized;
rb.velocity = transform.forward * verticalInput * moveSpeed + transform.right * horizontalInput * moveSpeed;

spice dragon
#

correct

wide quest
#

also does this fix the random rotation thingy?

#

ok one sec

#

done, now just gotta test it, one sec..

#

wow, that surprisingly fixed it. Thank you! 🙂

spice dragon
#

say thanks to ChatGPT 😉

wide quest
#

wait, chat GPT did it? not you?

spice dragon
wide quest
#

😆

spice dragon
#

this calculates and sets the velocity at the same time

rb.velocity = transform.forward * verticalInput * moveSpeed + transform.right * horizontalInput * moveSpeed;

#

So all I did was seperate the calculation into its own step to detirmine your movement speed and direction

wide quest
spice dragon
#

enjoy and welcome back to game dev

wide quest
#

Thank you, and thank you very much for your help!

hard estuary
#

If you want to split the code into a few lines, do you prefer to put symbols at the end of the line or at the beginning of the new line?

someVariable = variableWithALongName1 +
  variableWithALongName2;
// or
someVariable = variableWithALongName1
  + variableWithALongName2;
knotty sun
fervent furnace
#

prefer beginning, since you can read the operator easier

mellow sigil
#

whichever the IDE autoformats it to

fervent furnace
#

eg

int x=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa......
      b;
vs
int x=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa....
      +b;
knotty sun
#

if your code looks anything like that you have bigger problems than where to put the + sign

floral rain
#

Nevermind, I need to read my documentation better.

pulsar holly
fervent furnace
leaden ice
fervent furnace
#

yoou should !learn without guessing which unity message you should put your code into

tawny elkBOT
#

:teacher: Unity Learn ↗

Over 750 hours of free live and on-demand learning content for all levels of experience!

pulsar holly
leaden ice
#

Do you understand what Start is? What Update is?

pulsar holly
#

Yes, start is only once while update is multiple times.

leaden ice
#

So think about your code in that context

#

Think about how you're trying to read input in Start

#

And about when this code is going to run

pulsar holly
#

My variable still didn't update.

leaden ice
#

That's extremely vague

pulsar holly
#

I meant the variable on line 33 and 34 respectively.

leaden ice
#

You'd have to show your new code, explain what's happening in the scene, and explain what you expect to happen with the variable

pulsar holly
#

I showed the code, and the variable on line 33 and 34 isn't updating.

leaden ice
#

you showed code where all your code was inside Start

#

I don't know what it looks like now

fervent furnace
#

dont use == for floating point comparison

pulsar holly
leaden ice
pulsar holly
leaden ice
pulsar holly
leaden ice
#

no

#

that's very very wrong

#

that's even more wrong

#

don't make assumptions like that

fervent furnace
leaden ice
#

When you're not sure what to do ask what the right thing is rather than guessing

pulsar holly
leaden ice
#

but also if you're making a grid based game it'd be better to track things in integer grid coordinates and use those directly

pulsar holly
leaden ice
uncut vapor
#

Hey
I'm trying to use MySQL connector with unity
I downloaded the MySql.Data.dll
It showed me this error
I installed all the packages it mentioned, nothing changed
Does anyone know what's wrong?

image.png
leaden ice
fervent furnace
#

welcome to dependences hell
yes please check the dll

leaden ice
#

What's your use case for wanting to communicate directly between Unity and MySQL btw?

spice dragon
# pulsar holly You mean a puzzle game like tetris or puyo puyo?

Hey Anthony, as @leaden ice is trying to explain to you.

You have code placed in the incorrect place and thus it will not work.

Start will only be excecated during the start and it seems that you do not quite understand this coding structure but lets assume you are just a little lost.

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

public class test : MonoBehaviour
{

// Start is called before the first frame update
void Start()
{

ONLY PUT LOGIC HERE THAT IS ONLY MEANT TO BE TRIGGERED DURING THE START ONCE "Once as in everytime this script will b instantiated it will be excecuted"
}

// Update is called once per frame
void Update()
{

**HERE YOU SHOULD HAVE ALL YOUR MAIN LOGIC THAT SHOULD ALWAYS BE READY TO BE EXCECUTED **
}
}

knotty sun
uncut vapor
uncut vapor
leaden ice
# uncut vapor As I said I did install all the packages I'm trying to use Android, but I tried ...

I mean how will it be used? It's quite dangerous to give Unity direct access to the SQL database, as this means that anyone with your app will have the credentials to be able to access the database directly. Depending on which roles you give the user from your game, they can potentially read and write all kinds of things in your database that they really shouldn't be allowed to.

Normally when you have a shared databsae for your app it should be behind some web application you control which carefully controls access to the database.

uncut vapor
#

???
How's it different from using a php request from a website?

leaden ice
#

with the key they can do whatever they want

#

steal everything

#

change anything

#

etc

#

the php website can:

  • authenticate the user
  • only allow the user to access data related to them (instead of everyone's data)
#
  • Not allow them to freely update their scores/money/items whatever you have in there
fervent furnace
#

authentication

leaden ice
#

Once I have your key I can do all kinds of things. like just connect to your database and run truncate table users

uncut vapor
#

I'm confused

leaden ice
#

What part are you confused about

pulsar holly
uncut vapor
#

You mean like you can access the connection info when doing it like this somehow?
I'm confused as to how it gives the users access to anything

leaden ice
#

anyone can open the Apk

#

get those credentials

#

connect to your database

#

and run whatever commands they want

uncut vapor
#

Oh okay, I get it

#

I'll try doing it with a php web request then, thank you

gusty flame
#

Hey guys i have this problem that i want to make one object look at another. For this i am using "Quaternion.LookRotation". Everything is great but when i want to smooth the rotation by using "Quaternion.Lerp" and the LookRotation.eulerAngles.y is greater than 360 the value of it goes back again to 0, 1, 2... and the object makes 360 turn. And i want to prevent the object from doing this 360 degrees turn, any ideas?

leaden ice
#

show your code perhaps?

gusty flame
leaden ice
#

Yeah that's not a good practice

#

can you show your code?

#

It's best to avoid euler angles entirely when possible

gusty flame
#

I just paste it or?

#

there is a command to make text look like a code on discord?

leaden ice
#

!code

tawny elkBOT
gusty flame
#

oh thanks

# 
        Quaternion lookRotation = Quaternion.LookRotation(target.transform.position - rotator.position);
        Vector3 final = new Vector3(rotator.eulerAngles.x, lookRotation.eulerAngles.y, rotator.eulerAngles.z);
        rotator.eulerAngles = Vector3.Lerp(rotator.eulerAngles, final, .125f);
leaden ice
#

ok so you're trying to rotate rotator only on the y axis to look at target?

gusty flame
#

Yes

leaden ice
#

This is the better approach:

Vector3 direction = target.transform.position - rotator.position;
direction.y = 0;
rotator.rotation = Quaternion.LookRotation(direction);```
#

and if you want to "lerp" this you do:

Vector3 direction = target.transform.position - rotator.position;
direction.y = 0;
Quaternion desiredRotation = Quaternion.LookRotation(direction);
rotator.rotation = Quaternion.RotateTowards(rotator.rotation, desiredRotation, Time.deltaTime * speed);```
gusty flame
#

Okay i'll try it thanks

leaden ice
#

Or use Slerp if you really wish

gusty flame
#

Why is the y axis set to 0 tho?

leaden ice
#

so you aren't looking up or down

#

this isn't the y axis, it;'s the y component of the look direction vector

#

it's so you only rotate around the y axis

gusty flame
#

Oh okay

gusty flame
hard viper
#

I have another small physics question: When I manually call Physics2D.Simulate, it seems like it: 1) solves, 2) generates contacts (based on velocity/pos) before simulation, 3) changes velocity/positions of RBs to their position for start of next frame, 4) runs collision callbacks.

Before I call .Simulate, I know what position/velocity they should have before and after.

My issue is when I have kinematic RBs, the simulate step won’t change vel obviously, so ContactPoint2D.relativeVelocity and RB.velocity during collision callbacks are alligned. (whereas they normally would not be).

#

Q: Is there a way to get in that middle step right before collision callbacks, to set rigidbody velocity to match?

steady moat
hard viper
#

to do this I would need one collision callback that I would know with absolute certainty gets called first every fixed frame

#

is there a way to do that?

#

i do not know anything about order of execution of collision callbacks.

leaden ice
#

but I'm not sure

hard viper
#

i see. so when I get home today, I will try to put a trigger collider on something with a specific layer, with a singleton Monobehaviour with very high script order, and have it collide with something else very specific. Then in OnTriggerStay2D, I’ll invoke my singleton’s OnBeforeCollisionCallbacks action.

This should theoretically make it possible to get in between that, right? Assuming it obeys execution order.

heady iris
#

Do you want the rocket to completely ignore collisions with the other objects?

leaden ice
#

wdym by "return to the x axis"?

heady iris
#

I still do not understand what you mean.

#

Do you want the rocket to resume flying straight up?

leaden ice
#

There's a way to do everything but I don't really understand what you mean by "start point in axis"

#

I can't tell if we're talking about positions or rotations

bleak thorn
#

R - rocket

leaden ice
#

But wouldn't you want that to just happen organically?

#

e.g. from the user pointing the rocket right?

#

otherwise you're talking about taking over control of the rocket from the user

#

and if you want it to be physically realistic you will need a PID controller

#

basically an AI which controls the trajectory of the rocket and aims it such as to get it to that desired x position

#

like a cruise control

heady iris
#

i'd just apply force to push you back towards 0

#

instead of trying to realistically make the rocket tilt and whatnot

leaden ice
#

it can be done very eeasily

#

it just won't look good

#

I'm also unclear about if you actually want to move the rocket or maybe just the camera

heady iris
#

that doesn't answer praetor's question

#

What is wrong that you're trying to fix?

#

not "the rocket's x position changes"

#

is the rocket just going off the screen?

#

or is the rocket drifitng away from all of the objects you've spawned?

#

okay, so you want the player to be able to move the rocket

#

BUT you want the rocket to drift back towards x=0

# 
float delta = -transform.position.x;
rb.AddForce(delta * Vector3.right);

This would apply a larger and larger force as you moved further from x=0

#

This might be too aggressive.

#

Perhaps you could only start applying force when you're far enough from x=0

tawny mountain
#

I have a list of strings and I want to sort the list by what the user is typing? I want what the user is typing to appear at the top of the list

this is my list

public class InventoryList : ScriptableObject
{
    public List<ProductEntry> ProductEntries;


    [System.Serializable]
    public class ProductEntry
    {
        public string itemName;
        public string fourDigitDepartment;
        public string itemSKU;
        public int itemUPC;
        public int itemShelfLocation;
        public Transform itemLocation;
    }
}
heady iris
#

so you want to do a fuzzy match

#

and order the strings by how well they match the current input

#

I don't know of a library to do that off the top of my head, but there must be at least a few.

#

Look up "fuzzy string matching"

#

Fuzzy matching means that "Potato crop is good!" and "Potat crop is good!" are very similar

#

You would then need to sort the list based on how well the name matches your input

#

I would probably just use LINQ, since it has some really nice sorting methods

# 
IEnumerable<ProductEntry> sorted = items.OrderBy(item => SomeFuzzyMatchFunction(input, item.itemName));
#

you could use ToList() to turn that into a new list if needed.

#

or use Take() to take the first 10 results

fervent furnace
#

dynamic programming by either edit distance or lcs

heady iris
#

bringing me back to sophomore-level algorithms class with that one

tawny mountain
low horizon
# 
public void SetInputActions(InputAction action)
{
    action.performed += _ => skillInputHeld = skillInputPressedFixedUpdate = skillInputPressedUpdate = true;
    action.canceled += _ => skillInputHeld = false;
}

this method will be called more than once, how can i properly unsubscribe from the previous action and subscribe to new action if it is the second+ time this is called?

fervent furnace
#

dont use lambda expression or any anonymous method

heady iris
#

you'll also need code that unsubscribes from the methods.

#

Perhaps you can remember the InputAction you're currently using

# 
if (currentAction != null) {
  currentAction.performed -= ActionPerformed;
  currentAction.canceled -= ActionCanceled;
}
low horizon
# 
    private InputAction _currentInputAction;
    public void SetInputActions(InputAction action)
    {
        if(_currentInputAction!=null)
        {
            _currentInputAction.performed -= OnInputActionPerformed;
            _currentInputAction.canceled -= OnInputActionCanceled;
        }
        _currentInputAction = action;
        _currentInputAction.performed += OnInputActionPerformed;
        _currentInputAction.canceled += OnInputActionCanceled;
    }
    private void OnInputActionPerformed(InputAction.CallbackContext f)
    {
        skillInputHeld = skillInputPressedFixedUpdate = skillInputPressedUpdate = true;
    }
    private void OnInputActionCanceled(InputAction.CallbackContext f)
    {
        skillInputHeld = false;
    }

thanks! something like this?

low horizon
fervent furnace
#

yes, it has its own name

low horizon
#

oh the stuff after lambda is an anonymous method

#

thanks

spring creek
low horizon
#

yeah, it is a press input so i don't use parameters

#

thanks for clarifying

heady iris
#

It's anonymous because it has no name

thin hollow
#

Are referenced assets loaded in the memory always, or when I do something with them?
I currently have a component that OnValidate()constructs a string,AnimationClip dictionary from all animations in an specified asset folder, so that I then could pluck those animations at runtime by their name (needed to define animations for item handling for my characters since not all of them have matching skeletons and proportions). Will this list cause all of those animations to load up in the game? If so, would it be better to offload the list to an ScriptableObject asset, or it would load them all when referenced as well?

heady iris
#

Yes, the assets will wind up in memory as long as the component is loaded.

jaunty jolt
#

Consistent jump hight in 2D platformer (changing gravity)

slim yacht
#

hello guys >

#

can somone help with somthing ?

spring creek
#

We certainly can, if we know the answer. Gotta ask first of course

slim yacht
#

okey thank you

#

i want disscus somthing in unity store assest

spring creek
#

Just jump right in. We don't bite (mostly)

weary depot
#

Hello! I've been trying to get to grips with overlay scripting but can't wrap my head around subscribing to duringSceneGUI only once. I essentially have a method that draws lines between each selected objects, and call it through my button, but it keeps getting called on repeat. If I try to unsubscribe to my event after my iteration is done the handles aren't drawn. Any insight would be great🥺

ashen yoke
leaden ice
slim yacht
#

okey there is proplm with my own assest backage it,s told me i get rejecet becuse my backage was too simple i mean it,s not that big thing but how should it.s be
how i can make it no simple any more ?

weary depot
#

This "var clicked = new Button(() => ToggleState());" which in turn has the toggle state call a method that does this "SceneView.duringSceneGui += UpdateSelectedObjects; "

spring creek
ashen yoke
#

inspector/editor window?

weary depot
#

editor, for an overlay tool

ashen yoke
#

then use OnEnable/OnDisable of the window, and in the callback just check a bool

slim yacht
ashen yoke
#

so your button flips the bool, the callback still there until the window is closed

slim yacht
#

do you thing is it simple cuse it 2mgb ?

weary depot
#

Ok im sorry this might be dumb but would this essentially mean I'm subscribing once to duringSceneGUI until I press my button again?

ashen yoke
#

you are subscribing once when the window is opened, unsubscribe when its closed

#

while the window is visible you are subbed

spring creek
slim yacht
#

thanks for your time

weary depot
#

Come to think about it, I'm not sure if handles are permanent in the editor. So maybe I'm approaching this the wrong way. What I want is an overlay button that gets the active selected objects, displays a handle and restarts if I press the button again.

#

Also, thank you for the insight🥹

slim yacht
#

have a good night UnityChanThumbsUp @spring creek

knotty sun
ashen yoke
slim yacht
#

why not i will make it free

ashen yoke
#

the callback you send to duringSceneGUI renders all the time

knotty sun
#

does not make the package less simple does it?

ashen yoke
#

but until you press the button it doesnt do anything, because bool prevents it

slim yacht
ashen yoke
# 
void onSceneGui()
{
    if(!_active)
      return;

    Handles...
}
weary depot
#

Alrighty perfect, I did try something like that to no avail, but I probably screwed it up. Thank you!

knotty sun
#

no, the price is irrelevant

ashen yoke
#

if you want to draw a button on top of scene view use Handles.BeginGUI / EndGUI

#

at least with imgui

weary depot
#

I tried it but I don't think it works with UI toolkit and overlays 😦

slim yacht
ashen yoke
weary depot
#

Oh snap I missed that, thank you

knotty sun
slim yacht
hard viper
#

what determines the sign of relative velocity for a contactpoint2D?

#

is it just the velocity of the thing it hit in the reference frame of the RB getting the callback?

#

I’m getting some weird numbers when I try to check that two things aren’t trying to move away when in contact.

#

eg if I hit something OnCollisionEnter, relative velocity should be opposed to the surface normal, right?

leaden ice
untold siren
#

how would I go about caching components via a Dictionary? I can assume the basic logic will be

if component in dictionary then dictionary[component]
else getcomponent and add to dictionary
leaden ice
hard viper
#

if I have a collision with speed

leaden ice
#

surface normal faces away from us

untold siren
leaden ice