💻┃code-beginner

[ashen frigate]

doesnt it mean if one of them are false it will return; which exit the func ?

[cosmic dagger]

I'm not sure what you mean by this? This code is inside of your confirm_game method. You asked why the method itself was being called. Are you asking a different question now?

[ashen frigate]

sry if im hard to read english isnt my first lango but my question is why is it goes to else even tho i didnt click (hasclicked is a flag to check if the any player hit mouse click if all players selected characters)

[cosmic dagger]

Okay, inside of the method, it moves to the else block because hasClicked is false AND allPlayersSelected is false . . .

[ashen frigate]

i did && and it broke it

now its entering else all the time

[rich adder]

what do you want it to do ?

dont you want ?

if(hasClicked && allPlayersSelected){
//do stuff
}```

[ashen frigate]

^
isnt it the same as false or false ?

im doing a character picks check then if both players selected there characters one of them need to press click to active the game

[rich adder]

btw that Deley(10f); does absolutely nothing

[ashen frigate]

delay dont work on update ?

[rich adder]

no you cannot add delay to update

private IEnumerator Deley(float delay)
    {
        yield return new WaitForSeconds(delay);
    }``` this doesnt do anything

coroutines don't stop other code from running

[ashen frigate]

i see

[rich adder]

only anything below the yield return new WaitForSeconds(delay); does wait

[rich adder]

ya ik its just seemed no point of having the return there

[ashen frigate]

ive swaped the logic and place an && i get the same result

[rich adder]

are those actually fresh logs?

[ashen frigate]

yes

https://paste.ofcode.org/ZrpTCpn2buchmBa7GLvLrH

i did another one after swaping false or false to true and true

same result

[rich adder]

well yeah its the same condition

both must be true, just seemed no point of having else block thats all

[ashen frigate]

i think its hiting clicked and allplayerselected at the same frame is that posible ?

[rich adder]

probably

it only takes 1 frame since you're doing it in update

[ashen frigate]

how else can i check real time player inputs ?

[rich adder]

polling is fine if its for inputs

doing this is update is a bad idea btw
NewVirtualMouse[] allMice = GameObject.FindObjectsOfType<NewVirtualMouse>();

this is the times you actually use an Event based approach or value needs to be changed when something happens

[ashen frigate]

yea i couldnt find any local dynamic mouses so i had to improvise

this is the only thing that cam to mind

[rich adder]

I guess. You can easily add it to an array / list when the player joins and the virtual mouse is created..

[ashen frigate]

ihave array that save there indexs and theres choices

[rich adder]

I see mouseList but you never add or do anything with it

[ashen frigate]

ohh i think ive deleted the logic there cuz i get the indexs from update 🥲

[hardy ibex]

i have a script that needs to reference a GameObject (the player) but when i try to put the player in the gameobject field it says type mismatch? any idea why this could happen?

[rich adder]

is the field on a prefab ?

[hardy ibex]

yes

can i not do that?

[rich adder]

you can't add scene objects to prefabs

[hardy ibex]

ahh

ok

[rich adder]

https://unity.huh.how/references/prefabs-referencing-components

[hardy ibex]

!code

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://paste.mod.gg/, https://hastebin.skyra.pw/, https://paste.ofcode.org/, https://paste.myst.rs/, https://scriptbin.xyz/

📃 Inline Code

Surround code with three backquotes. Not quotation marks.
To format as C#, add cs to the first line:
```cs
// Your code here
```
Add a comment with a line number if there is an error message.

[hardy ibex]

private GameObject player;

player = GameObject.FindGameObjectWithTag("player");

is this the correct way to do that?

[rich adder]

its fine

not as good as the one shown in link but should be fine if its in awake once

[hardy ibex]

ok. i assume if i had more objects with the player tag this would not work

[rich adder]

yup (it will just grab the first one it finds)

but there is an array version

[hardy ibex]

using enemy.movement;
using UnityEngine;
using static UnityEngine.GraphicsBuffer;

public class enemySpawner : MonoBehaviour
{
    [SerializeField] private enemyMovement _enemy;

    [SerializeField] private Transform _player;
    public void SpawnAndConfigurePrefab()
    { 
        enemyMovement instance = Instantiate(_enemy);
        instance.Initialise(_player);
    }

    void Update()
    {
    }
}

using UnityEngine;
using static UnityEngine.GraphicsBuffer;

namespace enemy.movement
{
    public class enemyMovement : MonoBehaviour
    {
        private Transform _player;
        [SerializeField] float offset;
        [SerializeField] float speed;
        private Rigidbody2D rb;

        void Start()
        {
            
            rb = GetComponent<Rigidbody2D>();
        }
        public void Initialise(Transform player)
        {
            _player = player;
        }
        void Update()
        {

            float xDiff = _player.transform.position.x - transform.position.x;
            float yDiff = _player.transform.position.y - transform.position.y;




            Vector2 direction = new Vector2(xDiff, yDiff).normalized;


            rb.linearVelocity = direction * speed * Time.deltaTime;
        }
    }
}

i followed what is said in the link you sent but it says "object reference not set to instance of an object"

[west radish]

Double clicking the error, most of the time, will take you directly to the issue

[hardy ibex]

ok ill try that

it syas the error is in Update on the enemyMovement script when i try to do ```cs
float xDiff = _player.transform.position.x - transform.position.x;

[rich adder]

its possible its running before Init is running

you can test it by putting a Debug.Log(_player)

[hardy ibex]

in update?

[rich adder]

sure

[hardy ibex]

null

[rich adder]

so yeah

[hardy ibex]

so should i do if(_player != null) around it then?

[rich adder]

either wrap it in an if statement or early return

[hardy ibex]

bruh i was sitting here wondering why they werent moving its because i had the speed set to 0 😭

[prime cobalt]

I have a physics raycaster on my camera and an event system in the scene but when I hover the mouse over an object it doesn't send a debug message

[sour fulcrum]

that's for canvas objects

[prime cobalt]

What's the non canvas one called?

[sour fulcrum]

MonoBehaviour has built in OnMouseEnter & OnMouseExit functions but depending on the games context you might want to handle your own raycast pointing from the camera to the mouse position translated to world position

[prime cobalt]

Ok thanks

[wintry quarry]

They're not correct

You can use IPointerEnterHandler for non canvas objects

Can and should

[prime cobalt]

Yeah I thought I could, I think I did like a year ago. But OnMouseEnter is working.

[wintry quarry]

The problem with that is it's not going to give you the nice automatic UI blocking behavior

Which might not matter for you

[prime cobalt]

It actually does matter.

[wintry quarry]

From your screenshots it should have worked so one possibility is you had a UI element blocking it or something along those lines

Assuming your event system, input module, and physics Raycaster are correctly configured

[prime cobalt]

I don't even have a canvas at the moment

[wintry quarry]

Is the physics engine enabled?

Like if you go to project settings Physics

Does it say PhysX?

[prime cobalt]

I don't see anything about physX

[wintry quarry]

Which Unity version are you on

[prime cobalt]

2022.3.57f1

[bitter spruce]

Hello, i would like some assistance.

I have this menu page where i can scroll to select levels which is working normally. But once i enter the game scene and exit from the game scene to the menu scene. I only can swipe once and it gets stuck and stop working. which is really weird.

[wintry quarry]

I see, ok I was thinking of a setting from 6

[wintry quarry]

Have you changed any physics settings?

[rocky canyon]

use debug.logs in strategic places to find out whats going on

• the input
• then however u keep track of the selection/screen

[prime cobalt]

No but nvm, I just removed the input, physics raycast, and event systems then readded them and it worked.

[bitter spruce]

it follows my cursor for the first swipe after going back to the menu screen and it dosent snap to other selection which is does. then it just gets stuck

i have done some debug.logs but im still really lost

[rocky canyon]

start sharing some data..

maybe someone will be able to notice something causing it

[keen rampart]

hey does anyone know how to make a 2d building system using tile map

there are a bunch of tut on youtube but most of them are only using a limited amount of tiles

i want it to be able to place anywhere of the world

[eternal needle]

whats stopping you from adapting the tutorials youve seen and doing this? its really hard for anyone to help with so little information

[keen rampart]

i'm not sure

all of the tutuorial

uses

either a square of just a empty

object prefab

as the building space

but i just have no clue how to implmenet a infinite amoutn of those

like be able to build anywhere

brain too small

[cosmic dagger]

What makes theirs different from yours?

[keen rampart]

uh theirs uses a limted amount of "building spaces"/ they don't use the tilemap for the building system

[eternal needle]

you couldve just typed that all in 1 message. If i were you I would just start planning. What does it actually mean to build anywhere and how can you allow the user to insert literally anywhere? Part of that is game design, like do you want them to just type in coordinates or scroll to that part of the world?

otherwise it just comes down to having a list of objects that are present in the world, stored by its location and prefab

[keen rampart]

sorry about bad habbit, so what i'm trying to make is a building system that allows the player to build anywhere on the map with one the following condition:

must have a building under it
have one more more building adjacent to the building

I want it to span infinitually, the map origonally starts on a island

[cosmic dagger]

See, this is part of the information we need. There was no way of us knowing this without you telling us. You're original message said the video used a limited amount of tiles; now you're saying they don't use the tilemap?

[grand badger]

Sounds fun! Good luck!

[keen rampart]

sorry uh, what i mean by limited amount of tiles is just a empty object kjind of like this just a square

is just a buynch of "spawnpoints" or what i said origonally limited amoutn of tiles on the map

[keen rampart]

thank you

[eternal needle]

I havent done these kind of infinite maps myself so I cant really say much there, I wouldnt exactly qualify this as beginner friendly. Maybe consider that if you aren't completely confident in data problems or c#. I think regardless something you need to do is split your tasks up. The problem to me doesnt sound like building on an infinite map, it sounds like you dont have an infinite map.
Maybe there are better tutorials out there as well if you search specifically for infinite worlds. Regardless of what you do, you're gonna have to end up storing where everything is spawned and what location its at

The whole building conditions problem will go away once you actually have an infinite map that you can search up by tile

[keen rampart]

Sorry I probably didn't word it correctly but, what I meant by infinite maps isn't infinite "maps", heres an example by what i meant by infinite world, so basiclly there is a main island for the player to spawn on, the player is allowed to build on top of the island or ontop of a building the player have already built, and what I meant by "infinite maps" is that there is only a limited amount of islands but you can technically build as far up or as far sideways as you like

as you can see you can build infinitely high or sideways

that's what I mean't by "infinite" building spaces

[naive pawn]

wow, this unlocks some memories...

[polar dust]

if those buildings are only 1x1, then if you built a row of houses from 0,0,0, towards the right, then it would take 1,000,000 houses before unity gave a warning about floating point precision

whilst not infinite, im sure if you had a space thats 2 million x 2million houses wide, that will probably seem infinitely large when youre in the center of it

[lean basin]

I don't know what do you want from me, mr unity.

[grand snow]

MonoBehaviour has a field collider but its depricated so if you want to declare your own var with the same name you should do new Collider collider;

[burnt vapor]

I don't see what the confusion is

Deprecation messages often include steps to migrate to the new API. This one does as well

Use GetComponent to get the collider instead

Maybe your issue is that you have a variable collider, but here you use base.collider

Blame Unity and their shitty conventions

[lean basin]

It doesn't like me using collider
but it also doesn't like me making a variable named collider

I intend to declare variable named collider and then do collider = GetComponent<Collider>();

[burnt vapor]

Try with this.collider

Otherwise rename your variable to _collider or something, assuming it's private

Collider if public

[sour fulcrum]

name it something not collider

[burnt vapor]

@sour fulcrum?

[sour fulcrum]

whats the poor naming convention here

[lean basin]

ooh, I guess I'll do this then. Thank you

[burnt vapor]

Their old habit of using lowercase naming for public API

[sour fulcrum]

thats very old tho no?

[grand snow]

wtf i gave you the solution

[sour fulcrum]

the issue here is using the already declared name

[burnt vapor]

To avoid these things in the future, prefix private fields with an underscore and use pascal case for public fields

[sour fulcrum]

sorry bbygrl the gold sticker is going in my book this time

[lean basin]

I was a little confused with that.
is it like... making a new collider? but there is already a collider

[burnt vapor]

It doesn't really matter. If they didn't resort to using a bad convention it would not cause as many problems

It is very easy to mistake these variables for local variables like here now

[grand snow]

[SerializeField]
new Collider collider; //Lets us override MonoBehaviour.collider and make the warning go away

[lean basin]

oooh. it worked. I don't know why it worked. what the "new" there means?

[grand snow]

technically we have "hidden" monobehaviour.collider but for this purpose it works

[burnt vapor]

And you also introduced an additional warning

I know code formatting is not something that should be commented on but if you just name your field _collider it works just the same. Unity filters the prefix out in the inspector

that would be the correct way to use a collider in this case, as long as you are using a private field

[grand snow]

more info on field hiding: https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/new-modifier

if that all sounds too confusing then do as fusedqyou said

[burnt vapor]

I'm really not liking this suggestion either, no offense

Under no circumstance should you ever use new here, or at all

It's a major pitfall and I doubt they have any idea how it works

[grand snow]

I understand what it does but for a new dev i get the concern

[polar acorn]

Is it actually that bad when the thing you're overriding literally cannot be used without an error? Since the base field is deprecated it shouldn't be too bad to hide it, right?

[burnt vapor]

No, but the problem is that new should not be suggested in general. It's a keyword that has a very niche use case and even then it should really only be used in instances where the method you hide is guaranteed to contain the same behavior and mutability as the replacing method. It's just way too risky to use without properly knowing what you're doing and especially to beginners it will likely end up causing issues.

[polar acorn]

I don't think a beginner will ever end up in a situation where they'll get suggested to use new other than the ancient deprecated MonoBehaviour methods which would be fine to replace since you're almost certainly doing the same thing it was intended to do.

Still, it is important to know what you're actually overwriting and to be sure it's not in use any more

[ripe shard]

going further, I would think anyone assuming they have found a legitimate use-case for it should triple check whether thats really the best option. In most cases alternatives exist.

[ripe shard]

i've seen it done too many times by "not quite beginners". Dangerous to people who just want a "quick fix".

[keen rampart]

lol

[keen rampart]

Yep that’s what I’m trying to implement rn

[queen adder]

hi i want mod game

[slender nymph]

modding discussions are not permitted here. go ask whatever question you have about modding in the game's modding community

[queen adder]

ehhh okay

[tacit vigil]

Ok so I have the line var sprite = Resources.Load<Sprite>("pip1"); but running it, the sprite is null. The sprite's path is Assets/Resources/pip1.png and this is a 3d project if that matters (changing button image in script). What could potentially be the problem here

[grand snow]

is it actually a sprite or perhaps a texture?

[tacit vigil]

it says "Texture Type: Sprite (2D and UI)".

[grand snow]

is it a spritesheet with multiple sprites?

[tacit vigil]

no, it's a single png

[grand snow]

no, is the sprite mode multiple or single?

[tacit vigil]

ah sorry it does say multiple

[grand snow]

use LoadAll() instead to get all the sprites in that "spritesheet"

[tacit vigil]

if it's supposed to be just a single sprite in that png, would I change it to "single"?

[grand snow]

yep

[tacit vigil]

thank you! it worked now

[tawny grove]

Would setting a sprite to white every frame, even if it is already white, or checking to see if a sprite is white, and then setting it to white if not, be less efficient lag wise?

[ripe shard]

both are the same

[tawny grove]

Alright, thank you

[umbral bough]

Hi, I am trying to create an asset for an ActivationTrack in Timeline via c#.
I can't figure out what to pass to T tho.
ActivationTrack.CreateClip<T>();
I tried passing ActivationTrack but that threw the following error:

InvalidOperationException: Clips of type UnityEngine.Timeline.ActivationTrack are not permitted on tracks of type UnityEngine.Timeline.ActivationTrack
UnityEngine.Timeline.TrackAsset.CreateClip (System.Type requestedType) (at ./Library/PackageCache/com.unity.timeline/Runtime/TrackAsset.cs:623)
UnityEngine.Timeline.TrackAsset.CreateClip[T] () (at ./Library/PackageCache/com.unity.timeline/Runtime/TrackAsset.cs:520)
WorldTrack.AddClip (WorldClip clip) (at Assets/Scripts/WorldTrack.cs:30)
WorldClip.OnEnable () (at Assets/Scripts/WorldClip.cs:62)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /home/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:219)

I simply need to get the TimelineClip back from this function so I can do further things with it.
Please @ me and thanks in advance!

[umbral bough]

Solved by using ActivationTrack.CreateDefaultClip()

[scarlet skiff]

is
if (Physics2D.CircleCast(transform.position, 1, raycastDirection, jumpDistanceCheckHorizontal, groundLayer))

same as:

if (Physics2D.CircleCast(transform.position, 1, raycastDirection, jumpDistanceCheckHorizontal, groundLayer) != null)

?

[rocky canyon]

the bottom one is wrong.. b/c RaycastHit2Dis a struct.. it can never be null even if it contains no hit data.

i think.. digiholic can correct me if im wrong

[polar acorn]

RaycastHit2D is a struct, so it cannot be null. It has a custom overload for when it's being cast to bool to check if its collider is null

[rocky canyon]

RaycastHit2D hit = Physics2D.CircleCast(transform.position, 1, raycastDirection, jumpDistanceCheckHorizontal, groundLayer);
if (hit.collider != null) { /* Hit something */ }``` you might can do it this way

[keen owl]

Pretty sure that’s the correct way

[rocky canyon]

i just use layermasks.. not often i need to chek the collider..

if it passes the check it has a collider no?

if u use it as a bool i mean

TIL that circlecast returns a raycasthit2D.. thats a plus 🙂

[keen owl]

To be fair i’m so used to using the ontrigger/oncollision enter methods to check for collisions and not doing it that way but yeah it returns true if it hits a collider of that layer

[rocky canyon]

triggers are OP

🤫 don't tell raycast

[keen owl]

Recently just learned about QueryTriggerInteraction which were a life saver for making a grappling hook ignore trigger colliders lol

[rocky canyon]

^^ facts... i typically use it opposite of that

and have it detect triggers

[keen owl]

Strange, what would you grapple on with a trigger collider?

[rocky canyon]

nah i have different usecases..

like for wall mounted switches and stuff i use a bigger trigger collider than the actual collider..

that way my raycast has a nice big buffer area

[keen owl]

Oh I see. One of those moments where you have to hold E to do something

[scarlet skiff]

why not use oncollision instead ontrigger then? or does the hook of the grappling hook have a trigger collider?

[rocky canyon]

yea.. and that way u dont have to look exactly at it

just close enough

[keen owl]

The way I made my grappling hook was to raycast a solid collider at a certain distance that way if there’s something interactable with a trigger collider such as what we are talking about, it ignores it and doesn’t seem as if it’s hitting something invisible

[umbral bough]

Hi, I am trying to detect changes in transform in a fairly efficient way, have to work with a lot of objects(data oriented would be overkill).
I tried using this:
if (!transform.hasChanged) return;
However, it only changes on the initial transform change, if I hold, e.g. x, and drag, it won't change after the initial move.
Any ideas what I could do?

[rocky canyon]

u could cache the pos before each frame

and check in update if the new val matches

[rich adder]

if(currentPos != oldPos)

[rocky canyon]

not sure how efficiant that is for u

^ that

[umbral bough]

well yes, but say there is 100 objects, how well would that scale?

and not just pos, also the scale

[rich adder]

its fine

[rocky canyon]

comparing two values is nothing

[rich adder]

you're comparing some floats, it not a big operation

[umbral bough]

ok, thanks for feedback!

[keen owl]

I’m pretty sure that transform.hasChanged is only set to true once per frame so you’d have to explicitly set it to false if that’s what you are after

[rich adder]

transform.hasChanged is fickle
https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Transform-hasChanged.html

Note that operations which can change the transform will not actually check if the old and new value are different before setting this flag. So setting, for instance, transform.position will always set hasChanged on the transform, regardless of there being any actual change.

[rocky canyon]

u could do that too ^

[tawny grove]

is there a way to increase how often unity checks for collider collision in physics, ie checking to see if two solid colliders are within eachother every half a frame to prevent high speed clipping?

[rocky canyon]

like reset it as u would a trigger on the animator

[rocky canyon]

yes.. u can use different Collision Detection modes

[verbal dome]

That's what continuous collision detection is for

[rocky canyon]

on the rigidbody.. and u could also change the Physics tick to be faster

[keen owl]

Perhaps decrease fixed timestep? Will be costly on physics intensive scenes though

[rocky canyon]

but the detection would be the winner

[tawny grove]

ill test continous collision, didnt know that was a thing

[rocky canyon]

heh i always drop mine down to 65-70 frames per second

not sure why.. but i think it makes the gravity feel more realistic

[keen owl]

That’s the safe range I think for precision and performance

[rocky canyon]

ya, just a bit faster than stock

no need for a formula one car

[keen owl]

Anything higher might be costly

[rocky canyon]

;D lol

[verbal dome]

A faster timestep will make the tunneling problem less frequent but it's still there

[umbral bough]

good observation, I am working with an editor script and it only updates only occasionally, is updated called only sometimes in editor?
if yes, how can I work around that?
I already have this on my class:
[ExecuteInEditMode]

[verbal dome]

[ExecuteAlways] lets you run Update AFAIK.

It's the newer version of Executeineditmode

[verbal dome]

If you already have an editor script then you can just do it there, right?

OnSceneGUI or whatever

[keen owl]

I think OnEditorUpdate() also works, not 100% sure as I don’t use editor scripts much

[tawny grove]

this worked, does it have considerable effects on game preformance/lag?

[rocky canyon]

if its editor script does it matter?

oh wait wrong person

[rocky canyon]

nope its there for that reason

[tawny grove]

alright, thank you guys

[rocky canyon]

probably wont even notice anything

[rocky canyon]

i tend to only crank up the objects that need it.. if it works well enough w/o continuous i use the default setting

u could probably just do the same

fast objects almost always require it or a fat-ass collider

[tawny grove]

changing the physics tick you mean?

[rocky canyon]

ohhh.. it depends.. if u only change it a bit it shouldnt matter much

dont go crazy with it tho.. (it'll probably only matter in physic heavy scenes)

lots of physics going on

[tawny grove]

what are you refering to cranking it up, im confused

[rocky canyon]

no i was originally talkin about the Continous mode

[rocky canyon]

its just another alternative

but if changing it to Continous on the rigidbody works.. i wouldnt worry about the timestep

[tawny grove]

alright, thanks! i dont think things will be going much faster than that slime would be.

so continous hsould be okay

[rocky canyon]

cool, what i meant was just change the objects that need it to be changed to Continous

if it works w/o changing it keep it default.

good luck 🍀

[atomic bramble]

Hello, when I import a Unity project from disk the scene is empty, do you know why pls?

[rocky canyon]

you mean a unitypackage?

[wintry quarry]

Which scene is empty? I suspect you simply didn't open your scene.

Unity doesn't open any particular scene by default

so you're probably just looking at the default empty scene

[rocky canyon]

SampleScene bb

[atomic bramble]

ahhn how I open the scene pls?

[wintry quarry]

double click it

from the project window

[atomic bramble]

Is it a file in the project structure?

[wintry quarry]

Of course

[atomic bramble]

Wow thanks

[queen adder]

I would love help with my project. There is no stated error, but the UI image when I instantiate it does not move as it should. I'm probably missing something extremely simple.

        Debug.Log(transformYValue);
        transformYValue = transformCount * 150; //makes distance farther for every new task
        GameObject newButton = Instantiate(buttonPrefab, new Vector3(0,0,0), Quaternion.identity, buttonParent.transform);//creates new button
        newButton.GetComponent<RectTransform>().anchoredPosition = new Vector3(0, transformYValue, 0); //WHY. DOESN'T. THIS. WORK.
        transformCount = +1; //increases distance for next

it should instantiate it at 0X, 150Y, 0Z, then continue going up in value from there, so moving further down each time. also, the ui image does not show up, as the Z is somehow set to -88000, and does show up if I manually set the Z to 0.

[wintry quarry]

Instantiate with:

GameObject newButton = Instantiate(buttonPrefab, buttonParent.transform);```
not with the position/rotation form

and use a vertical layout group

instead of manually trying to space them

[short hazel]

And transformCount = +1; should probably be transformCount += 1; instead

[wintry quarry]

yep transformCount = +1; is just transformCount = 1;

absolutely no reason to position them manually though when VerticalLayoutGroup exists

[queen adder]

how do I use a vertical layout group? this is my first time messing with UI

[wintry quarry]

Just make an object with the VerticalLayoutGroup component

and place the objects you want laid out vertically as its children

Play with that in the editor a bit to get used to how it works

• Make empty object with VLG component
• Add some Images as its children

[queen adder]

...I could have done this the whole time?
-# I feel like an idiot

[wintry quarry]

once you undertstand how it works then you can use it in your code - just instantiate the objects as its children with this form of Instantiate: Instantiate(buttonPrefab, buttonParent.transform);

[queen adder]

i already changed the instantiate form yeah. i guess also remove the transform stuff too?

[wintry quarry]

you won't need to do any manual positioning in your code, yea

[hallow acorn]

why does my boxCast like an collision? when i increase GroundDetectionRayLength the player moves up a bit like it increases the size of the collider. this is the code i used:

private void Grounded()
{
    Vector2 BoxCastOrigin = new Vector2(FeetColl.bounds.center.x, FeetColl.bounds.min.y);
    Vector2 BoxCastSize = new Vector2(FeetColl.bounds.size.x, GroundDetectionRayLength);

    GroundHit = Physics2D.BoxCast(BoxCastOrigin, BoxCastSize, 0f, Vector2.down, GroundDetectionRayLength, GroundLayer);
    if (GroundHit.collider != null)
    {
        IsGrounded = true;
    }
    else
    {
        IsGrounded = false;
    }
}```

[queen adder]

thanks. you're a lifesaver

[wintry quarry]

boxcasts don't do anything except return that RaycastHit2D to your code

If your object is moving - it's because your code is moving it

Presumably code that's not in this snipped you shared here.

[hallow acorn]

i didnt use the variable GroundDetectionRayLength anywhere else in this code and when i change it in the editor the player gets boosted up a little. if i shrink it down it doesnt get moved instantly it falls due to my gravity

[wintry quarry]

again, It's due to some other code you have

presumably reacting to the IsGrounded being true or false

[hallow acorn]

https://paste.ofcode.org/UreymrYd9QvS2eLxR9uGNa this is the whole code responsible. my other scripts move the camera or are input system classes automaticly generated

[wintry quarry]

you're only applying gravity when you are grounded:

        if(!IsGrounded)
        {
            rb.linearVelocityY += ActualGravity * Time.deltaTime;
        }
        else
        {
            rb.linearVelocityY = 0;
        }```

changing that boxcast distance basically is going to change the height at which you consider yourself to be touching the ground

you're also explicitly setting your velocity to 0 if you are grounded

so yeah - you're going to float in the air with a higher distance

[hallow acorn]

ohhh okay thank you so much this makes very much sense!

[scarlet skiff]

i have a gameobject with rb and normal box collider 2d, and it touches an object with normal collider too but no rb. should this not trigger the oncollision in the first script? because it doesnt

the object is a child of an empty, maybe that effects it in some way?

[wintry quarry]

Is the Rigidbody dynamic

[slender nymph]

https://unity.huh.how/physics-messages

[queen adder]

um... pretty sure it's not supposed to look like this...

[wintry quarry]

Just a matter of fixing the settings on your prefab

The yellow piece is either set to preserve aspect or it's not anchored properly

Also #📲┃ui-ux

[quick pollen]

Hey! What are some ways of efficiently moving a lot of objects at once using a for loop?

editing the transform.position directly? using transform.Translate? i doubt using rigidbodies is any efficient so thats not even in question

[wintry quarry]

It's a vague question. Rigidbodies are pretty efficient in general though

If you want to be the most efficient you would use the Jobs system and https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Jobs.TransformAccessArray.html

[quick pollen]

imagine around 300-400 projectiles

i dont want to use jobs level movement I dont think

although I would probably want to use jobs for changing other values, like lifetimes and such

[wintry quarry]

then you pretty much just move with a for loop via the Transform

[quick pollen]

how big of a hit is it to use rigidbodies?

because that's what I'm most comfortable with, and thats what I did before

[wintry quarry]

There's no way to answer that in general

try it and see

Rigidbodies are not inefficient

[hallow acorn]

its probably a really stupid mistake i did but:

1. why does the code in the first if get called but no velocity applied? (the calculation is prolly wrong but how do i fix it?)

2. why does not even the print() in the else if get called?

this is my code:

float ActualGravity = Physics2D.gravity.y;
bool IsJumping = false;
if(playerControls.Player.Jump.IsPressed() && IsGrounded)
{
    IsJumping = true;
    rb.linearVelocityY = Mathf.Lerp(rb.linearVelocityY, JumpForce, 1 * Time.deltaTime);
    print("Jumped");
}   

else if((playerControls.Player.Jump.WasReleasedThisFrame() || BumpedHead) && IsJumping)
{
    print("Released");
    ActualGravity = Physics2D.gravity.y * 2;
}```
help is much appreciated!

[quick pollen]

ill also be wanting kinematic ones too, so that should help

[idle solstice]

looking for a tutorial on creating a card mechanic
like a deck building game, does anyone know of a good tutorial?

[quick pollen]

rb.linearVelocityY = Mathf.Lerp(rb.linearVelocityY, JumpForce, 1 * Time.deltaTime);?

also, you are wrong lerping

[hallow acorn]

believe me i have no idea what im doing im just guessing and praying sry

[quick pollen]

https://unity.huh.how/lerp/wrong-lerp

[quick pollen]

that's okay, we'll get through it one by one

first of all, rb.linearVelocityY doesn't exist

[hallow acorn]

tysm 🙏

[quick pollen]

at least not in my version of unity

[queen adder]

Is there a better way then endless long if-statements for somethink like a receipt book, i made a small sample (with colours) to explain what i mean ```cs public Output GetFusionOutput(option1, option2)
{
if (option1 == Orange && option2 == purple)
{
return braun;
}
and so on....
option can be 10+ diffrent colours
}

[quick pollen]

you usually just change rb.linearVelocity or do rb.AddForce

[wintry quarry]

the print isn't called because the condition in your if is false

or the first if ran

[hallow acorn]

its new in unity 6. using rb.velocity.y is obsolete now

[wintry quarry]

if the first if runs, the else will ofc not run

[quick pollen]

could use switch case?

[hallow acorn]

ohh ofc bc it than has to be pressed and released at the same time?

[quick pollen]

tho im not sure what ur trying to do

[queen adder]

i can check two things in a switch statement, not just one var? oh!

[quick pollen]

if you need to literally combine colors, theres other ways to do that

[quick pollen]

not what I meant

i mean, maybe using some lambda expression, but i doubt it

also, this is probably a case of combinatorics

[eternal needle]

a switch or if statement isnt gonna change the fact that you need to write out every possibility somehow. you could use a dictionary so its not just repeated if statements though

[queen adder]

i want that the player choose 2 Cell, and fusion them to something new. like orange and blue cell = Braun. But Orange and green = purple. Blue and green = yellow and so on

[quick pollen]

thing is, that sounds a bit scary still

the amount of colors you need to check for increases almost factorially when you add new colors

[queen adder]

i know that's why i ask

[eternal needle]

no it doesnt lol

[queen adder]

if there is a better way

ohh noo

okay

but thanks

[quick pollen]

well, what you can do probably is rb.AddForce

cuz that handles it properly

[hallow acorn]

wont addForce be overwritten by velocity? as i use it for everything also my self coded gravity

[quick pollen]

man i suck at combinatorics
still, id think theres at least some method for checking all the combinations in other way

[quick pollen]

so long as you add to your force, and don't set it directly, it should be fine

but you probably shouldnt be setting the velocity of your object every frame anyway

[steep rose]

yes sir, setting the velocity directly will overwrite addforce.

[eternal needle]

as i wrote above, nothing is gonna magically solve the issue of "you need to write out every possibility somehow". You need to write it out however you choose to.
A dictionary would make it easier IMO

[hallow acorn]

so what can i do instead?

[steep rose]

not set it directly

if you want to use addforce that is

[quick pollen]

well, why do you set it directly?

[queen adder]

Okay i think i will use a dictionary, thanks

[quick pollen]

also sorry but 1 * Time.deltaTime? lmao

[hallow acorn]

as i said before im just guessing i never did this before 😭🙏

[hallow acorn]

bc many tutorials say its better and i think i have more control about my code then. i also made my gravity and horizontal movement with acceleration and decelleration like this which works decently well

[quick pollen]

well, multiplying with 1 doesn't change in unity lmao, it's the neutral element of multiplication

[quick pollen]

imma be real, a lot of tutorials suck, at least in my experience

using the documentation, while less user friendly, will 100% yield better results

[hallow acorn]

my code is like a mix from my code did a bit ago (made from 3 different tutorials and what i thought would work) and what i now think would work

i have no idea what im doing here

[quick pollen]

i think you should start with a clean plate

[hallow acorn]

this is my third clean plate

[quick pollen]

first of all, think of the basics of jumping

maybe write it down on paper

and then take an individual look at each aspect

like how to apply gravity, how to apply upwards force, etc

[hallow acorn]

i have my physics school book laying in front of me 😭🙏

[small dagger]

is there a way I can specify that certain scripts/functions are debug only?

As in, they only work in editor but not in an actual build

[slender nymph]

https://docs.unity3d.com/6000.0/Documentation/Manual/platform-dependent-compilation.html

[quick pollen]

technically you can see if the application is a build or an editor window

[small dagger]

thanks

[wintry quarry]

There is also the option of writing code in an Editor folder or an editor-only assembly

In practice most people use a combination of both

[quick pollen]

this is some basic stuff at least

it gets less fun when you enter applied calculus lmao

btw, quick question, you get the raw direction of a velocity vector by normalizing it, right?

[steep rose]

I would personally use addforce for the jumping part or use a formula for one (notably when you use a character controller)

You could technically mix directly modifying velocity with addforce for jumping as long as you do not modify the Y velocity.

[quick pollen]

easing functions for jumping sounds like a banger

[eternal needle]

I really wouldnt mix the 2, it just gets awkward. You can just directly set the velocity and make your own addForce methods

[quick pollen]

so much freedom

[steep rose]

you would get then normalized vector back (i.e the vector with same direction with a magnitude of 1)

[hallow acorn]

what do you mean? normalizing is so moving diagonally is the same speed as in a right angle right?

[steep rose]

oh yeah for sure, I just use addforce solely

[hallow acorn]

thats what im trying to do

[steep rose]

I like it better anyway imo

[quick pollen]

yeah, that sounds like it, thanks!

[eternal needle]

normalizing has nothing to do with movement. normalizing is something you do to a vector so it's magnitude (length) is 1

you may normalize a vector so you can use it in movement, but normalizing itself has no concept of movement

[quick pollen]

when you normalize a vector, it sets the magnitude of the vector to 1, so as an example if you have
(1, 2, 3) it'd turn into (0.16, 0.33, 0.5)

[hallow acorn]

bro im so confused wth

[quick pollen]

(approximate values)

[eternal needle]

you should really study some basic vector math then. its not strictly physics related either, something you'd likely learn in a grade 11 or 12 math course

the basics of vector addition, scaling, normalizing should be good enough to get a better understanding

[quick pollen]

well, we didn't do vector calculations in 11th or 12th grade

only matrixes

tho tbf matrixes are more useful, esp in high level gamedev

[eternal needle]

are you aware of what a matrix with one row or column would be?

[quick pollen]

well, ofc thats a vector, but we never do that

idk

we only do 3x3 vectors matrices, sometimes 4x4

calculating determinants and inverses and stuff

or matrix multiplications

but thats kinda it

[hallow acorn]

im kinda overwhelmed im in grade nine and i get my (probably) F physics exam back on thursday so...

[eternal needle]

A 3x3 matrix is not a vector

[quick pollen]

o, sorry, i misstyped

meant matrix there

good call, ty!

[quick pollen]

btw a bit off topic, but istg matrix multiplications made me age by like 5 years because of how fucking long they take to calculate manually

[eternal needle]

understandable as to why you're overwhelmed, I dont fully remember what I learned around that age in terms of math. You truthfully dont need to know anything too complex
I do think anyone can understand the basics of vector math but it might fly over your head in how its actually used in unity. Id say start learning it outside of unity on like khan academy. Once you actually understand the basics, hop into unity and try the math in unity. Then try moving objects, then move them more with the math

[quick pollen]

bro, idk how good your school is, but i can almost guarantee you that the physics they teach you in school is 90% useless

[eternal needle]

There's also a ton of other things you dont really need to understand yet, but has built in functions. Like im definitely not gonna suggest learning the math for rotating a vector but unity has a built in function for it. You just need to understand how to use the function which is something you'll get with c# practice

[hallow acorn]

its one of the highest and most technical schools in austria but yes it is indeed useless

[eternal needle]

no one actually does it manually but yea ofc they're gonna teach you how to do it. most matrix involving stuff people have programs for like matlab or octave

[quick pollen]

i also go to an elite school rn, i cheat my physics tests because my teacher sucks ass and doesn't bother with explaining concepts

[quick pollen]

tbf writing an algorithm for it would be quite easy

dude that sounds like a banger idea actually

would save me a shitton of time with my homework

and itd be nice informatics practice

[hallow acorn]

yeah me too you dont want to see my notes on the back of the calculator but what does it help if i dont know how to use the formulas

[eternal needle]

🤷‍♂️ i literally listed 2 programs that already do matrix math for you. Writing any algorithm is easy. Making and proving an algorithm is hard
Anyways all of this is getting way off topic for the channel

[quick pollen]

personally I believe that in physics you shouldn't need to learn the formulas and such in order to do it
you just need to know what you need to use, but you shouldn't need to know everything off the top of your head

[quick pollen]

yea i know you did, i just said itd be a fun challenge overall to make an algorithm like that
also yeah I agree

[hallow acorn]

i hate this so much why does it have to be this complicated to code a jump like horizontal movement is easy, gravity is easy too. but why cant i figure out how to make it move up and down again without feeling like absolute garbage. i love making game art and coding in general but when it comes to vector calculations etc i have no idea what to do

[quick pollen]

well, theres a lot of ways to do vertical jumps

[ancient stirrup]

you have to learn it first obviously you wont have any idea what to do

[quick pollen]

its not exactly complicated

more so theres a lot of ways you can choose, which may feel overwhelming

[ancient stirrup]

apply a massive explosion force under each one of your feet 👴

[hallow acorn]

im getting frustrated every single time thats why i have 20 projects and just 2 finished

[quick pollen]

(i hope i didnt just brainfart with that message)

[ancient stirrup]

2 finished??? thats a lot damn

[eternal needle]

i mean no offense here, but it is easy. It's been like 5 minutes since I said on steps you could take to learn it and apply it in unity. you surely haven't learned anything inbetween that time

[ancient stirrup]

i prob burned through like 30 before 'finishing' something

[hallow acorn]

one was for a 2 week gamejam and one was from an online video course i did so not really sadly

[ancient stirrup]

yea just put nukes under ur feet

[hallow acorn]

now how do i simulate nukes 😭

[quick pollen]

you know where the explosion happens, and where your character is

[hallow acorn]

but i just dont understand what you mean but thats my error

[quick pollen]

so you can calculate the direction from the explosion

[hallow acorn]

good point

[quick pollen]

and the distance from the explosion

boom (ha), you have everything

direction is just pos2 - pos1

and distance, theres a unity function for that

[hallow acorn]

but if i knew how to calculate the force of the nuke i would be able to just calculate the mf jump or no?

[quick pollen]

ofc

that the idea lol

except you dont even need to calculate directions

because you will always be jumping up

[hallow acorn]

but i dont know how to do dat

[quick pollen]

you can use rb.AddForce

[hallow acorn]

but with velocity

as addForce will be overwritten

[eternal needle]

the real error is wasting time here. You're not learning anything from these back and forths with 1 line explanations on normalizing or calculating vectors (or whatever the fuck is going on with those nuke talks). Maybe try learning properly with steps I wrote here. #💻┃code-beginner message

[quick pollen]

or you can edit the rb.linearVelocity's y field directly

ok im getting a lot of weird ideas, like using animationcurves, so i wont spam chat

[hallow acorn]

i know thats probably a great hint but i dont think im able to learn 11th to 12th grade math/physics and implement them in code when i cant even comprehend 9th grade physics. i love learn gameDev but sometimes i just think im too dumb for that and quit the project until i make the next one 2 weeks later. i just dont know where to start as when i ask for help on discord i think its a simple problem its probably an easy fix and then its about vector math and nukes and i dont understand a single word

can i just add my jumpforce and subtract my gravity? prolly not or

[quick pollen]

you want to subtract gravity every frame that your character is not touching a floor

[hallow acorn]

yes i think i do that

[quick pollen]

this isn't 11th or 12th grade maths or physics

you might be tired or overwhelmed at this time

so you are probably overthinking the problem

[hallow acorn]

didnt bawsi say vector math is this grade

[quick pollen]

well, i never learned vector math and i can still do movement

you dont even need a lot of vector math here, you are only editing the y field of a vector3

[hallow acorn]

can you explain it in simple terms for me?

[rich adder]

https://docs.unity3d.com/Manual/scripting-vectors.html

[hallow acorn]

why did he even mention vector math and normalizing and other confusing terms

[quick pollen]

Absolutely! Here's a si- okay i wont be making ChatGPT jokes lmao, but yeah you don't even need vector math here really

[quick pollen]

no, i was asking about normalizing a vector for myself

cuz i wasnt sure

[hallow acorn]

ohh okay

[quick pollen]

you don't really need that rn

but actually, let's clear this up

you know what velocity is, right?

[eternal needle]

I'll address a few points here but im also short on time. You just gotta face the reality that your issue here is just not wanting to go learn something properly.

dont think im able to learn 11th to 12th grade math/physics
Literally nothing about the basic vector math is hard. The reason they don't teach it to you yet is because the ways you can apply it will require further knowledge. Addition, scaling a vector, and normalizing. Just try learning those 3.
dont know where to start
I gave you directions on how you could start learning vectors. You're also young so you're learning c#, unity, and math at the same time. This isn't gonna work, you need to make it simple for yourself.
then its about vector math and nukes and i dont understand a single word
I dont know why others were rambling on about other topics or just joke answers. It's clearly confused you more. I know the problem you have is simple, and yea a lot of people here can solve it. But you're just gonna have another problem 5 minutes later thats equally as simple because you don't know the basics

[quick pollen]

at least, when in a vector?

[hallow acorn]

i think so velocity is like the momentum it moves with on each axis if in a vector right?

[quick pollen]

well, momentum is not the correct phrasing, more so distance per time (like meters/second)
and yes, that's basically it

[eternal needle]

thats when they teach it to you, yes. it doesn't mean you have to be in that grade to understand it. the basics of vector math don't actually rely on much previous knowledge. Can you add or multiply 2 numbers? Done you can understand vector math

[hallow acorn]

thank you so much for taking the time i really appreciate it

[hallow acorn]

oh okay

[hallow acorn]

yeah ok thats understandable so far

[quick pollen]

i mean, yeah, normalizing a vector is just adding the absolute values of every element together, and diving each element with that sum, no? (asking for myself)

[eternal needle]

honestly id really recommend you stop trying to give them lessons in vectors and let them go to an actual resource to learn it. At least other resources like khan academy will draw it out
If you wanna personally tutor them then make a thread or add them.

and given your last question, you really shouldnt be teaching them vector math either

[quick pollen]

lmao touche, im tired

[quick pollen]

yeah, you're right also
i just also understand that getting first-hand explanations might help more than reading about them online

[hallow acorn]

i can confirm that

[quick pollen]

but yeah @hallow acorn you just need to start actually coding

and itll make more sense

you dont need to do much

[scarlet skiff]

how do u get rid of all the unnecessary lines in a polygon collider

[polar acorn]

If they were unnecessary they wouldn't be there.

This is what happens when you use a polygon collider instead of a primitive

[quick pollen]

when you jump, set the y velocity to some value, and let gravity decrease it back to 0

[polar acorn]

It's the reason why primitive colliders are preferred

[quick pollen]

polygon try to be very precise, so

[hallow acorn]

so add jump velocity and add my gravity?

pls dont tell me its that easy

[quick pollen]

add jump velocity once, let gravity decrease velocity over time when in the air

its literally that easy

i mean, this is like the simplest way of doing jumping

but you can tweak it as you go

stuff like making your jumps higher/lower depending on how long you hold down the jump key for, etc

[hallow acorn]

im the biggest time waste ever why tf did i waste an hour of my free time for that but thank you guys so much for taking your time for me

[scarlet skiff]

i just want a triangle collider bro

[hallow acorn]

i think id just increase gravity on releasing, no?

[quick pollen]

personally id do it like a really weak jetpack

[polar acorn]

Just use a box collider

[quick pollen]

just set the y velocity to the jump force while you are holding a key and also have "fuel in your jetpack" (just make sure the jetpack only has like around 0.2s of "fuel", otherwise it turns into a literal jetpack)

[hallow acorn]

ohh thats a smart idea i think

thanks

[polar acorn]

Or accept that you're going to have a bit of performance hit

[quick pollen]

idk why you need such precise hitboxes tho? as an example, Geometry Dash uses these hitboxes

[hallow acorn]

why do the lines bother you? i dont think performance is that important in a 2d game or?

[scarlet skiff]

a waste is a waste though, wouldnt want that

[bright osprey]

can use animation curves to make jump feel a bit more custom? ill be honest i havent read much around context for this question so if this is useless please ignore

[scarlet skiff]

i suppose if i position a box collider well enough, you wouldnt ntoice a difference between that and a triangular collider

[quick pollen]

i was thinking of that too. technically you can

[hallow acorn]

prolly a good idea but i want to kee it relatively easy

[quick pollen]

i think GMTK made a "game" for that

or a game that uses that principle

[hallow acorn]

an extra game just for that?

[hallow acorn]

oh ok

[quick pollen]

yeah, it was a project of his

https://gmtk.itch.io/platformer-toolkit

[hallow acorn]

i just tried this why is his educational little project so polished holy shit

[quick pollen]

that's the average GMTK quality right there

he is great

[bright osprey]

another really cool movement system is described in this video - i know this is really out of scope but for a bit of control of my characters i enjoyed implementing the system shown in this video https://www.youtube.com/watch?v=KPoeNZZ6H4s. I havent used it for player movement but it gave my third person camera some really amazing freedom

[quick pollen]

one of my favourite Unity content creators alongside like Sebastian Lague

[hallow acorn]

i love this guy

[quick pollen]

i watched this video before, ngl i had some issues understanding it at first

its the best explanation ive seen so far, but i still struggled, so idk

[bright osprey]

yep - its not an easy one to follow at all if youve not done some differential eqs.

as you said though, worth cracking it 🙂

[quick pollen]

well yeah, once we learned a bit more about integrals and derivatives i understood it better, so its probably just my own skill issue

[bright osprey]

idk if id call it a skill issue 😂 wwee all gotta learn it for the first time sometime

or if youre me, many times

[keen owl]

Just so you know, you can use edge colliders

[scarlet skiff]

i mean yea but wanted to know if there was a more effecient solution

i jus tended up going with a box collider tbh

[keen owl]

You can specify the vertices of the polygon collider in the inspector too. Box collider works as well

[scarlet skiff]

i tried to play around with the settings but couldnt figure it out

anyways, not a big issue

how does one cast a raycast that only check what is at the end of the distance

[keen owl]

Should be under points

[scarlet skiff]

yea i wouldnt know what to do with all this

[scarlet skiff]

im so close to being finished with a monster i just need the correct way to check something like this when im done with it

[keen owl]

You would just edit the values like how you edit lists or arrays in the inspector. You can delete all and leave like 3 points and just move them around

[polar acorn]

If you want to check only a specific area, not a line leading up to it, you might consider using an OverlapCircle at the point you want instead

[scarlet skiff]

how would i then get specifically what is on the area marked red on the overlap circle

[polar acorn]

You wouldn't center the circle on your character, you'd use a small circle at the position you want

[scarlet skiff]

ohhhhhhhhhh ye

[acoustic belfry]

what would be a more detailed description for serializing? cuz i googled it but the awnser was too vague, it says that stores it, but how specificly?, what pros i can get with this? its a good idea to use it for my script?, and a lot of youtubers that i see put that on their variables, what does it mean? i have to put it on my script too?

[polar acorn]

It lets you store data in a file. For example, in a unity scene file.

[Serializefield] lets you edit a private variable in the inspector

public variables are serialized by default. Private variables can be made serializable, while also remaining private

[acoustic belfry]

holup, if serialized means its modificable in the inspector...
then what diferenes public with privated?

[polar acorn]

Public variables can be accessed by any class. Private variables can only be accessed by the class they're defined in

[sour fulcrum]

serialized does not mean it's modifiable in the inspector, it's just a little byproduct of the fact that it is serializable. Although you likely don't need to worry about the direct benefits of serialization yet

[acoustic belfry]

i think i have A LOT to modify...

90% of my variables are public, i did that for test them out and see how they work

and some enemies have variables with the same name

[polar acorn]

In general, you should use private unless you have a specific need for something to be public. It means less clutter in your suggestions and less likely to change something somewhere you shouldn't

[sour fulcrum]

You gotta remember that c# was not built with Unity in mind and the way Unity lets you modify things in editor is basically "cheating" in regards to how c# is meant to work so while you may want to edit things in inspector for workflow and convenience purposes, those things shouldn't be accessible in the context of other code touching it

[acoustic belfry]

o h

so in other words i have to change all public to [SerializedField] private?

[sour fulcrum]

you don't have to

it's preferred

it's a weird comparison but if you imagine your like god and have the ability to go anywhere and change anything. you should be able to magically stick your hand into some gold bank vault and mess with whats inside it but the vault door and all that should still prevent anything real from actually getting in there

[eternal needle]

I honestly wouldn't go back and retroactively change it all, but just keep it in mind for the future. Maybe also if you change old code and realize some values shouldnt be modified externally then change it

it doesnt affect anything for the end user, it just matters for developers

[scarlet skiff]

help how do i force stop play mode

oh no i cant even enter unity again

i do not wanna close it i have a lot of unsaved work

[polar acorn]

You can recover your scene as long as you do it before you re-open it

It's in Temp/Backupscenes

Take it, rename it to a .unity file and it's the scene as it was when you last entered play mode or opened the project

[scarlet skiff]

all the scripts stay saved?

thats like what im worried about

some of the malready existed but where changed locally (using perforce) and not submitted
some are newly made

and prefabs

[eternal needle]

You arent editing the code in unity, those are in your IDE. And you must've saved the code to actually run the updated version of it

[scarlet skiff]

okay cool

[eternal needle]

the only thing you'd possibly lose is the scene and values changed in inspector

[scarlet skiff]

so suppose unity just crashed, what coudl i potentially lose? just scene changes?

[scarlet skiff]

ah, not too crazy

[eternal needle]

and digi wrote above how to recover a scene backup so you shouldnt ever lose too much

[scarlet skiff]

no there like no scene changes so im good, just a lto of scripts, a new prefab etc, some imported assets etc

is there a few things i can try before using task managere to close unity?

clicking on my unity tab with the project open in it doesnt even open it

[keen rampart]

hey

can anyone explain to me

[restive lantern]

Hey, I can't find documentation for UnityEngine.GameObject.GetComponentByName even though it exists. How does it work?

[keen rampart]

why my code is printing out the issues that I need to assign the variable in the inspector

when the variable

is already assigned

😭

my code is working

[polar acorn]

There exists a BuildingSystem that you haven't assigned a mainTilemap to

[keen rampart]

oh shit

i was so confused

[polar acorn]

Since this one does have that variable assigned, it isn't this one

[keen rampart]

i found it

😭

[teal viper]

Undocumented or deprecated API probably. I've never heard of it. Could also be an extension method added by an asset or plugin

[teal viper]

Can you share a script where you have it? Also, does it even compile?

[restive lantern]

I don't have any script that uses it, but the function is being suggested by my IDE

It only takes a string. If I just call it passing some string the script compiles, yes

[teal viper]

Ah,I see it in the CS reference. It seems to be the same as GetComponent(string).
I guess it's just some naming refactoring they had in unity 6.

[native thorn]

Anyone have any information or good sources on setting up realistic cars?

Code wise im fine, just more so the actual logic in the rpm / gears / final drive etc

more so the engine I guess

[restive lantern]

Ohhhh I see

[cold tusk]

I'm brand new to CSharp and unity and need help getting a movement system working for a 2D Platformer. Heres the entire Player script as of now. Tried to follow a tutorial but the didn't show the whole code, now I'm stuck as to whether to continue with this code or find a different solution for player movement.

[wintry quarry]

find a better tutorial

By the way

tutorials are not intended to be used to make your game

[cold tusk]

Ok, I was just wondering if anyone knew how to work with the code already.

[wintry quarry]

Tutorials are for learning

you watch them, follow along, and learn the concepts

then you are equipped to write your own code

the point of a tutorial is not to be a solution you plop into your game and ship.

If you want that, just find/download an asset

[cold tusk]

Ok. so your saying I have the wrong mindset to learn

[wintry quarry]

I'm just pointing out, because I saw you write "or find a different solution for player movement" which meant you were treating this like a solution for your game

[cold tusk]

You are correct. So I should be experimenting a bit before working on a game?

[wintry quarry]

Yes, experiementing, learning, and geting comfortable with Unity and C#

[cold tusk]

Okay, Thanks. You saved me alot of time and work

[grizzled spoke]

Anyone know a good way to rotate and object towards another object given its transform?

I've tried using transform.lookAt() however

1. i need a 'turret' object to rotate towards a playe robject when it's in a given range, but when the player enters the range, the turret jumps or shoots to a rotation where it's pointing to the player, but i want it to happen gradually
2. lookAt() rotates an object towards the player instantly, but i want to be able to control the rotation speed

i've also tried using this code from (unity discussions)[https://discussions.unity.com/t/how-can-i-make-a-game-object-look-at-another-object/98932/4] :

 Vector3 dir = target.position - transform.position;
    Quaternion lookRot = Quaternion.LookRotation(dir);
    lookRot.x = 0; lookRot.z = 0;
    transform.rotation = Quaternion.Slerp(transform.rotation, lookRot, Mathf.Clamp01(3.0f * Time.maximumDeltaTime));

However,

1. It's laggy, like there's a jitter
2. the rotation speed is relative to the distance? so like if it needs to rotate farther it rotates faster, but i want the speed to be constant
3. i have NO clue how this code works
   Also can someone explain how subtracting the targets position from the current objects position gets the direction

[wintry quarry]

Quaternion.RotateTowards is a good way.

in Update or a coroutine

"laggy" and "jitter" is a result if you using Slerp incorrectly here

there's also no indication in that code where it's running or anything

the simple thing is just:

Transform target;
float rotationSpeed = 50f;

void Update() {
  Vector3 direction = target.position - transform.position;
  Quaternion desiredRotation = Quaternion.LookRotation(direction);
  transform.rotation = Quaternion.RotateTowards(transform.rotation, desiredRotation, Time.deltaTime * rotationSpeed);
}```

[wintry quarry]

Also can someone explain how subtracting the targets position from the current objects position gets the direction
That's just basic vector math

[grizzled spoke]

i tried using that but fsr the documentation website is broken for me (Even on incognito so its not an extension issue)

[grizzled spoke]

alr ill google that

[wintry quarry]

the direction from A to B is B - A

well technically that's the offset from a to b. The direction is the normalized version of that.

[grizzled spoke]

ohhhh that makes a lot of sense
thanks

[wintry quarry]

looks like it's working fine based on your screenshot?

[restive lantern]

Hey, not sure where to ask this, but are indices in Unity clockwise or counter-clockwise?

[wintry quarry]

what do you mean by "indices"? Indices of what?

[restive lantern]

In 3D meshes

[wintry quarry]

Oh, clockwise

[restive lantern]

Thank you

[hardy ibex]

im trying to compile for web and i get the error "The type or namespace name 'SearchService' does not exist in the namespace 'UnityEditor' (are you missing an assembly reference?)"

[grizzled spoke]

i see
thanks ith i understand it

[wintry quarry]

you cannot use UnityEditor apis in your build

they are only for the editor

[hardy ibex]

ok

i dont know what im using that is that

how can i find it

[wintry quarry]

How can you find what?

The error?

The rror contains the filename and line number

[hardy ibex]

well like what do i do to fix it

[wintry quarry]

go there

[hardy ibex]

ok

[grizzled spoke]

in this code sample, do you mean to replace 'targetRotation' in the Quaternion.RotateTowards() method with desiredRotation

it works if i do that
thanks

[wintry quarry]

sorry yes

i just wrote that quickly

[hardy ibex]

i just had some unused using statements lol

[grizzled spoke]

Its fine, thanks so much

[keen cape]

hello everyone I changed myu jump from Update to FixedUpdate and now the character flies off the screen when I jump, how do I clamp my jump so that doesn't happen?I tried googling it an i don't find an answer
void FixedUpdate()
{
//Jumping
if(isJumpPressed)
{
body.AddForce(new Vector2(0, jump), ForceMode2D.Impulse);
}

[rich adder]

how often is isJumpPressed called and what did you set jump value to ?

with Impulse there was no reason to move it to FixedUpdate btw

[keen cape]

oh, didn't know that I'm starting out and i just heard that jumping should be on FixedUpdated so i went and did it

so i should move it back?

[keen cape]

jumpPressed is on Update and Jump value is 9

[rich adder]

its not specific to jump, normally you do moved rigidbodies in FixedUpdate yes, when its Impulse its fine though because its applied within a single frame, not over several like other forcemodes

[rocky canyon]

u can call rigidbody functions in update.. but they'll only ever be executed in fixed anyway

[sour fulcrum]

unless you manually call for a physics update, no?

[timber tide]

If you do a physics query (raycast) it's that frame

oh unless you mean to sync the physics, I'm not actually sure

probably

[rocky canyon]

can u do that?

[sour fulcrum]

https://docs.unity3d.com/2023.2/Documentation/ScriptReference/Physics.SyncTransforms.html

[rocky canyon]

yea i tried to figure it out myself lol

[rich adder]

https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Physics.Simulate.html

[rocky canyon]

oh lord.. i cant follow

why my formatting all broken 😦

@rich adder ur page look like that? ^

[rich adder]

Oh wait wtf its broken on new links

ugh

all the 6000 docs is shotty

[rocky canyon]

lol.. just makin sure it wasnt jsut me

[rich adder]

https://docs.unity3d.com/2017.3/Documentation/ScriptReference/Physics.Simulate.html
old works fine

but yeah this isnt calling fixedupdate

Physics.Simulate does not cause FixedUpdate to be called.

[hardy ibex]

when i build with webgl it wont detect keyboard input. does the new input system just not work well with webgl or something?

[rich adder]

works fine for me

[hardy ibex]

maybe its an itch.io problem?

[rich adder]

have you checked Console for errors

[hardy ibex]

like browser console?

[rich adder]

yeah but iirc you need to make it a devbuild

https://docs.unity3d.com/Manual/webgl-debugging.html

[hardy ibex]

ok

[restive lantern]

Is my assumption correct that UnityEngine.Transform.localToWorldMatrix (getter) just gives me the transform as a matrix relative to world space? Or does it do something else?

[twin pivot]

this isnt working for some reason

[teal viper]

Probably correct, yes.

[teal viper]

What's not working? How do you know that? Did you attempt debugging at all(logs? Breakpoints?)?

[twin pivot]

all the debug messages are sending properly

its not properly loading in

[teal viper]

What's not loading in? How do you know that? Please don't ignore some of the questions.

[twin pivot]

both data.numOfBeens and Refer.upgradeOne

[teal viper]

How do you know that? How do you confirm that?

You're still ignoring questions...

[twin pivot]

with the debug messages?

and by looking at the variables?

@teal viper

[teal viper]

Looking at the variables where? Did you try logging them?

[twin pivot]

i have a giant display that displays the variables

[vague charm]

Hello I'm new and need help on how to proceed..

I'm trying to get this object to move towards the mouse but it's not following what am I doing wrong? x_x

[teal viper]

Ok, let's assume your observations are correct.
Now, where do you assign these variables on load?

[north kiln]

1. Is the component on an object?
2. Are the variables configured correctly in the inspector?
3. Are you using an Orthographic camera?

[vague charm]

1. Yes its an object I attached the script to
2. I don't quite understand 😭 what variable should be present? I'll post a screenshot of it
3. Right now it's in perspective

[rich adder]

in 2D you probably want Orthographic camera

[vague charm]

Yeeeeees it's working now! I don't understand why but thank you!

When I watched the tutorial I thought orthographic was just to angle the position of the camera differently

[rich adder]

TLDR in simple terms
Orthographic is a flat prospective without depth into account, so makes objects look same size regardless of distance
Perspective is how we see in the real world, further something is, smaller it looks
https://docs.unity3d.com/Manual/CamerasOverview.html

[keen owl]

If they used perspective in 2D, they are likely rendering meshes with a particle system or are using meshes in the scene for fancy parallaxing. Though other than that, there’s no use for perspective in 2D

[vague charm]

Reading now thank you so the object wasn't following because it had no sense of depth?

[vague charm]

I'm glad you said this because that's what I was gonna use the whole time lol

[twin pivot]

ahhh i see

im guessing im fetching the saved data but not reassigning em back into the variables?

[teal viper]

Yep

[twin pivot]

How do i do that?
data.numOfBeens = PlayerPrefs("bEEns")?

[rich adder]

something like mousePosition moves on a flat 2D plane , that's not very good when you have depth, as distance from camera also changes where the position object appears on camera

[twin pivot]

(I would test it out myself but im out right now)

[wintry quarry]

PlayerPrefs("bEEns") is not valid syntax, no.

Check back at your earlier code for an example.

[twin pivot]

Alright thanks

[teal viper]

Also check the documentation of the methods that you're using. Check what they return.

[tawny shell]

Hi I need help please, I'm coding a top down shooter game and I have a problem with my fov which is offset in relation to the obstacle. I use raycasts to do this, and the further I get from the obstacle, the further the raycast.hit seems to be.

public class FieldOfView : MonoBehaviourPunCallbacks
{
    [SerializeField] private LayerMask _layerMask;
    private Mesh _mesh;
    private float _fov;
    private float _startingAngle;
    
    void Start()
    {
        ...
    }
    
    void LateUpdate()
    {
        int rayCount = 50;
        float angle = _startingAngle;

        float angleIncrease = _fov / rayCount;
        float viewDistance = 20f;

        Vector3[] vertices = new Vector3[rayCount + 2];
        Vector2[] uv = new Vector2[vertices.Length];
        int[] triangles = new int[rayCount * 3];
        
        vertices[0] = Vector3.zero; 
        
        int vertexIndex = 1;
        int triangleIndex = 0;
        for (int i = 0; i <= rayCount; i++)
        {
            RaycastHit2D raycastHit2D = Physics2D.Raycast(transform.position, Utils.GetVectorFromAngle(angle), viewDistance, _layerMask);
            Vector3 vertex;
            
            if (raycastHit2D.collider != null) vertex = raycastHit2D.point;
            else vertex = transform.position + Utils.GetVectorFromAngle(angle) * viewDistance;
            vertices[vertexIndex] = vertex;

            if (i > 0)
            {
                triangles[triangleIndex] = 0;
                triangles[triangleIndex + 1] = vertexIndex - 1;
                triangles[triangleIndex + 2] = vertexIndex;

                triangleIndex += 3;
            }

            vertexIndex++;
            angle -= angleIncrease;
        }
        
        _mesh.vertices = vertices;
        _mesh.uv = uv;
        _mesh.triangles = triangles;
        
        _mesh.RecalculateBounds();
    }
}

Just my fov is contained in Playercont but it doesn't move, it is Player who moves and therefore the fov follows

[verbal dome]

The vertex positions you are giving to the mesh are in world space

They should be converted to the FieldOfView object's local space instead

(Or the FieldOfView object would have to always be at 0, 0, 0 pos)

[tawny shell]

love u thanks !!

vertices[vertexIndex] = transform.InverseTransformPoint(vertex);

[queen adder]

does anyone know how to make a script to toggle objects? Its for a flashlight.

[elder raptor]

Hello! I am having issues with this Interaction Code I wrote. It works, yes. But it makes the Camera Movement too Choppy and makes it feel really weird. Any idea why?
This is my code: https://hastebin.com/share/avecajopeg.csharp

[grand snow]

public void ToggleActiveState()
{
    gameObject.SetActive(!gameObject.activeSelf);
}

pretty simple stuff

[queen adder]

ok. is it simple to make it toggle with a key

[grand snow]

Yea. Also very simple stuff:

private void Update()
{
  if(Input.GetKeyDown(KeyCode.F)
  {
     ToggleActiveState();
  }
}

May want to check some tutorials if this is new to you. Check Unity Learn for good beginner resources.

[queen adder]

oh ok. Thank you!

[grand snow]

BUT remember when a gameobject is disabled, Monobehaviour Update() functions are NO LONGER CALLED.
so you should have this input -> toggle not be on the flashlight.

[queen adder]

yes it is on the spotlight

[grand snow]

so you should toggle another object or the light component itself

[SerializeField]
Light flashlight;
...
flashlight.enabled = false; //change light enable state

[queen adder]

using UnityEngine;

public class flashlighttoggle
{

}
{
publc float objecttoenable;
public keycode togglekey;
public bool stickykeys;
}

{ GetComponent.(objecttoenable)
Input.GetKeyDown

}

this is my script so far

[grand snow]

funny joke

[queen adder]

ikr

[scarlet skiff]

what is the reason for it having 0.000000003 added to the value? nothing else changed its value

[queen adder]

im learning c# rn

[grand snow]

floating point inprecision. just happens when you use float/double

[scarlet skiff]

seems like an important thing to not have happen, any suggestions on how to approach this?

just have it be an int then divide by 10?

[grand snow]

if its critical then you can do this kind of fixed point stuff. Otherwise its not gonna matter much (as long as you dont try to check for exact numbers) so you will be fine.

[scarlet skiff]

as long as you dont try to check for exact numbers
that is what i was doing lol.. i was so confused

[grand snow]

yea you should just not with floats. you can check for approximate matches
https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Mathf.Approximately.html

[elder raptor]

Can you not just round it off?

[grand snow]

its extra work when its probably not even needed

[scarlet skiff]

hmm so i assume my approach with diving by 10f would still have this inprecision happen

[grand snow]

if float is there then expect inprecision. you can work around it

e.g. Mathf.Abs(a - b) <= float.Epsilon

mathf.approx does this already basically

[elder raptor]

Ah I see, thanks for the info

[queen adder]

using UnityEngine;
using monoclass
public class flashlightToggle
{
public bool on = false;

void Update()
{
    if (Input.GetKeyDown(KeyCode.F))
        on = !on;
    if (on)
        light.enabled = true;
    else if (!on)
        light.enabled = false;
}

}

[elder raptor]

Is it possible to check this and let me know what's wrong with it? I've been trying for a while 😔 I am doing First Person Camera movement and my camera goes crazy if this script is enabled.

[queen adder]

new script, i have a missing monoclass error

[elder raptor]

Fix your script.

[queen adder]

yeah uhh.. How?

[elder raptor]

You didn't initialize light, did you?

using UnityEngine;
public class flashlightToggle : MonoBehaviour
{
    public bool on = false;
    public Light flashLight;

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.F))
        {
            on = !on;
        }
        if (on)
        {
            flashLight.enabled = true;
        }
        else
        {
            flashLight.enabled = false;
        }
    }
}

[queen adder]

oh

ty

[elder raptor]

You don't need else if in this case cuz the only other possibility for if(on) is !on. If there are more than two possibilities, then you can use else if.

[queen adder]

ok

[elder raptor]

And using Monoclass is not a thing

Are you not using Visual Studio? It should recommend changes/fixes.

And if you link your co-pilot account, you can even solve the issues in the IDE itself.

[queen adder]

alright i will do that now

[elder raptor]

Good luck!

[hexed terrace]

this is a lot of extra code for something that could be a single line.

if (Input.GetKeyDown(KeyCode.F) { flashLight.enabled = !flashLight.enabled; }

[elder raptor]

True, yours works way better. I assumed he was going to use the boolean for something else later since it was public.

[hexed terrace]

I hadn't scrolled that far up. Most beginners just use public because they don't know any better

[elder raptor]

True true, [SerializeField] private ftw

He is indeed a beginner, he is just learning c#. I mean, I am a beginner myself 😓 I don't follow good coding practices xd

[hexed terrace]

it's something we never stop learning

[elder raptor]

xD

True that

Have been procrastinating reading this book for years: https://gameprogrammingpatterns.com/contents.html

[hexed terrace]

It took me ages to get through, maybe, half of it.. then I gave up

It's a good book, and worth reading for those who learn that way.. just not for me

[elder raptor]

Lmao, I have not gone past the Table of Contents page yet 😭 But I do recommend it to a lot of my peers. I am more of a person who learns stuff when working on it, ion like learning beforehand, which is bad ig

[hexed terrace]

ion?

[elder raptor]

I don't

Short for it

[hexed terrace]

I have aged out of too much slang

learning while doing is a valid way of learning

[elder raptor]

Understandable, I can't keep up with the current slangs. I just know what I learn from the people I talk with.

[elder raptor]

Yeahh, it's far more exciting

[burnt vapor]

You have no choice unfortunately, these things will always exist

Even if it didn't checking for a direct value is a very bad idea since the chance of having a remainder on floating point values is very likely

At best you can use more precise values instead of a float, like double or decimal, but that won't change the fact you will need to account for imprecise values. Considering your value here is basically similar to the whole number, you can use the method rob mentioned before to get a value that is "close enough".

[restive lantern]

When should you use a float, when a double?

[wintry quarry]

use a double only when you particularly need extra precision

almost all of Unity's API uses floats, so it's usually fine to just use float

[restive lantern]

What exactly does extra precision mean? More decimals?

[wintry quarry]

basically.

The number of possible numbers that can be represented by the variable is increased

[restive lantern]

So what are the exact limits of float and double? I can't find good answers on Google, but maybe I am just searching wrong?

Like, how many decimals does float vs. double allow?

[wintry quarry]

in what form would you like your question answered

Like, how many decimals does float vs. double allow?
It's not that straightforward

The precision of floating point numbers is concentrated near the origin

you get higher precision near 0

[restive lantern]

Ohh so it's more precise if the number is close to 0?

Ah yeah

[wintry quarry]

fully HALF of all possible values in both datatypes live in the realm between -1 and 1

for float that's 2.1 billion out of 4.2 billion possible values, all within that range

it's very concentrated

[restive lantern]

Ohh so that's why a lot of stuff is represented from 0.0 to 1.0

So the precision moving away from 0 decreases logarithmically?

[wintry quarry]

playing around with https://float.exposed/0x44bf9400 might help understand more

[wintry quarry]

Ohh so that's why a lot of stuff is represented from 0.0 to 1.0
No I would say that's mostly out of mathematical convenience

it also has precision benefits for sure

[restive lantern]

Oh thank you I'll play around with that

[scarlet skiff]

quick question, if i do

if (something) dosomething();

will dosomething() run regardless if something is true or not since there are no { } ?

[wintry quarry]

If you have an if without {} it will apply to the next statement that appears only

so no is the answer to your question

but:

if (something) dosomething(); dosomethingElse();``` dosomethingELse() will always run

[scarlet skiff]

but only to one statment, so if i have if (something) dosomething(); break;

then break will always run?

[naive pawn]

floats have ~6 decimal places, doubles have ~17

[wintry quarry]

That's a massive oversimplification and depends on what part of the number line you're looking at

[scarlet skiff]

yea.. i noticed this in my code and wanted to oduble check the rules... this is... extremly good to know...

[naive pawn]

but yeah what praetor said

[wintry quarry]

basically without the {} it will apply up until the next semicolon ;

[polar acorn]

That's still two statements even if it's one line.

[naive pawn]

like, doubles don't even get 0.1 + 0.2 right. it's a classic example
https://0.30000000000000004.com

[polar acorn]

The if statement and the thing it runs

[wintry quarry]

that part has nothing to do with precision though. THat's a consequence of trying to represent a number in a base that can't represent it. It's the same as why you can't write 1/3rd properly with base 10 decimal digits

[restive lantern]

I heard fixed point maths is a thing too and it avoids this. Is that true?

[naive pawn]

right, im giving it as a counter example, that ~17 is just a vague estimate

[polar acorn]

As far as the code is concerned, line breaks don't exist. They're purely for the convenience of the human. You can put them anywhere except inside a symbol and it'll work just fine

[wintry quarry]

yes the basic idea is just imagine if we have a variable like:

int tenths;``` and we treat each unit as 1/10. Then you can have
`tenths = 2;` and that represents 0.2

[naive pawn]

(footnote: depends on the language)

[restive lantern]

What was that wall

[naive pawn]

yeah because it doesn't use approximations until you turn it human-readable

[polar acorn]

There are more precise data types, but there's always trade offs. Unity uses floats because they are small, close enough for all practical purposes, and there's a ton of them at any given time

[polar acorn]

We do not speak of Python in this house

[naive pawn]

hey it's not just python

js/ts care about line breaks too, due to ASI

[restive lantern]

Very neat. So that makes division and multiplication very easy I would assume

[polar acorn]

We do not speak of js at all

[coarse magnet]

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

public class seekingplayer : MonoBehaviour
{
    public float speed;
    public Transform target;
    Rigidbody2D bombrb;
    Vector2 movement;
    private Vector3 moveDirection;

    private void Awake()
    {
        bombrb = GetComponent<Rigidbody2D>();
    }
    void Update()
    {
        Vector3 direction = (target.position - transform.position).normalized;
        moveDirection = direction;
    }
    private void FixedUpdate()
    {
        bombrb.velocity = new Vector2(moveDirection.x,moveDirection.y);
    }
}

i made this code so the enemy can follow the player, but it ignores the player and goes straight to the bottom right of the screen, it worked normally like once and then it broke

[wintry quarry]

it makes lossless addition and subtraction very easy.
Multiplication and division would do integer division here.

[restive lantern]

The CPU has instructions specifically for floating point, I know that much. So they are probably much faster too

[wintry quarry]

Any floating point based data type will have the 0.1 problem, regardless of how many bits of precision it has

[restive lantern]

But does it really matter?

[wintry quarry]

it's simply not possible to write 1/10th in binary without an infinite repeating series of bits

[naive pawn]

bash as well
stuff that doesn't use semis, like lua

[wintry quarry]

it can matter yes

[wintry quarry]

whatever you assigned as target is probably at 0,0,0

you probably assigned a prefab to it

[naive pawn]

for very intensive usage, yes

[coarse magnet]

it only accepts prefaps

[wintry quarry]

Correct, prefabs cannot reference objects in the scene. You're going to have to assign the player reference at runtime after you spawn the enemy

[restive lantern]

Can you give an example? In graphics the viewer wouldn't be able to see if something has a scale of 0.3 or 0.30000000001 or whatever.
Same thing with sound. So where would it actually matter?

[naive pawn]

currency is the main thing people point at

[wintry quarry]

It doesn't have to be "intense" usage. Just anything where exacting precision matters

[naive pawn]

anything that displays numbers

[wintry quarry]

graphics not being one of them

for example a grid based combat system

[restive lantern]

Yeah but currency can be represented in cents which has no decimals right?

[coarse magnet]

..and how do i do that?

[restive lantern]

Ohhh like calculators

[naive pawn]

oh i thought you meant whether "probably much faster" mattered here

[wintry quarry]

have the spawner do it

[restive lantern]

Ah

[naive pawn]

yes, that is the main recommended alternative

[wintry quarry]

Example: https://unity.huh.how/references/prefabs-referencing-components

[naive pawn]

it's just a common pitfall to represent in whole values as a floating-point

i couldn't find examples, but occasionally (and if you're in the right groups) you might see posts online about websites for banks or railways or whatever displaying something ridiculous like ...0000000007 or ...999999995 that obviously shouldn't be there
that's a product of floating-point imprecision

[restive lantern]

Lol...

[naive pawn]

js didn't have an integral type until relatively recently lol

[restive lantern]

Yeah I know

[naive pawn]

number in js is just float64 so you get all the issues that come with that

[restive lantern]

You'd have to do &0xffffffff every time go make sure it's in 32 bit integer limits lol

[naive pawn]

well that just casts it to an int32, but it still comes back as a float64

and you can't cast it to anything other than int32/uint32 lol
and bigint is comparatively quite slow since it's arbitrary size

js is such a mess lmao

[burnt vapor]

These type of questions might be better suited to #archived-code-advanced

[restive lantern]

Oh my bad didn't look at the channel name

[burnt vapor]

No problem, just a suggestion because this channel gets the most activity

[restive lantern]

Thank you

[bright zodiac]

not all floatingpoints can be downcasted or presented as int32. You may get UB..

e.g : (int)float.MaxValue

unless you dont mind doing unchecked unchecked (int)float.MaxValue;

you may as well use uint at that point

[naive pawn]

we're talking about js there

[bright zodiac]

oh haha ok mb

[naive pawn]

would it be UB in c# though? c# doesn't seem like the kind of language to have that, aside from stuff marked unsafe

[queen adder]

#archived-urp

[bright zodiac]

try it 😉

[naive pawn]

trying it wouldn't prove anything though? UB is up to how the language specifies it

[bright zodiac]

its not ub... just error there

[naive pawn]

seems like not UB then yeah

[brave compass]

Has anyone mentioned decimal yet? It's based on the decimal system so it can store fractions like 0.3 exactly. It exists for dealing with currency mainly.

[wintry quarry]

decimal is the same as float and double

it's just 128 bits instead of 32 or 64 respectively

the reason it can store 0.3 exactly is that it stores numbers in base 10 not base 2

[naive pawn]

isn't it not an ieee 754 float?

[wintry quarry]

It is not

[naive pawn]

it's a mantissa and exponent, just without the added NaN and subnormal and infinity stuff?

[wintry quarry]

https://stackoverflow.com/a/9079437

It's still a floating point number

just not ieee 754

and the floating decimal point is a decimal point, not a binary point

[naive pawn]

yeah based on that i wouldn't call it "the same as float/double"

[wintry quarry]

if tht makes sense

sorry yeah that's fair

[brave compass]

So... it's not exactly the same. My point was that it's base 10 (decimal), which makes it more appropriate for storing currency.

[restive lantern]

How do i get all MeshCollider components in a scene? Do I have to traverse the scene or is there a function that does that for me?

[naive pawn]

because ieee 754 does specify decimal floats, and decimal is not that

[wintry quarry]

FindObjectsOfType?

[verbal dome]

Or a massive physics query 😄

[restive lantern]

Oh yeah, perfect. Thank you!

[wintry quarry]

The "best" way depends on the situation

are these objects you spawned?

[restive lantern]

I thought it must be something like GetComponents

[brave compass]

But still fair to mention this, I wasn't aware it was still a floating point number.

[restive lantern]

Nope

[wintry quarry]

Instead of the 1/10th problem it will have the 1/3rd problem, for example

[polar acorn]

Well, it's still base 2 technically

[wintry quarry]

i mean it's obviously stored using 0s and 1s

[polar acorn]

[wintry quarry]

Idk how they do it

BCD or something?

[bright zodiac]

Decimal is 128 bit

[restive lantern]

Is there a variant of UnityEngine.Object.FindObjectsOfType that takes a string as a type? Or do I really have to do this whole type lookup using System.Type.GetType?

[slender nymph]

don't you already know the type you want to get? why would you need to use GetType if you know at edit time what type of component you are searching for?

[verbal dome]

You know it has a generic overload?

[naive pawn]

the exponent is base 10

[restive lantern]

Because I don't know how to call the generics from native code lol...

[naive pawn]

wdym?