💻┃code-beginner

[quick pollen]

what is the x?

[naive pawn]

the plane exists in 3d, but the plane itself is 2d

a plane doesn't have a thickness

[languid spire]

that is the lambda capture of the variable i. Very important

[verbal dome]

But it can have a 3D rotation/normal

[slate haven]

But what if i dont know about the height and width? I just wanna fit the no.of blocks on the plane. Every other level would have different amount of blocks. So there shouldnt be any pre-decided width and height right?

[naive pawn]

ok?

[quick pollen]

but its not even used anywhere?

[verbal dome]

I'm just being a smartass because you were being one

[languid spire]

yes, it is it is passed to the CreatePooledItem method

[slate haven]

can we stop fighting? im literally here to ask a question

please dont deviate

[quick pollen]

oh you edited it, okay

[ivory bobcat]

Sure it is, as an argument to the function on the following line.

[quick pollen]

it wasn't like that before

why can't you just pass i directly?

[naive pawn]

In mathematics, a plane is a two-dimensional space or flat surface that extends indefinitely.
the plane itself is 2d
it can be oriented in 3d, that doesn't affect its dimensionality
a line can also be oriented in 3d, but it'd still be 1d
a point can be positioned in 3d, but it'd still be 0d

[slate haven]

true

[verbal dome]

Because i is "captured", meaning that the i passed into the method sort of as a reference and it will actually get incremented in the loop, and when the lambda gets called, i is not the same anymore
So you separate it into another variable to avoid that

[quick pollen]

ohh

[ivory bobcat]

Because the value will change and persist

[naive pawn]

there's 2 widths and heights here, can you clarify whether you mean the total height/width of the board or the height/width of any given cell?

[quick pollen]

    private void Awake() {
        for(int i = 0; i < projectiles.Count; i++){
            Pools[i] = new ObjectPool<GameObject>(() =>
            { int x = i; return CreatePooledItem(x); }, OnTakeFromPool, OnReturnedToPool,
            OnDestroyPoolObject, true, 20, 50);
        }
        Instance = this;
    }
    GameObject CreatePooledItem(int i)
    {
        GameObject newPooledObject = Instantiate(projectiles[i]);
        newPooledObject.GetComponent<BasicBullet>().pool = Pools[i];
        return newPooledObject;
    }

I have this currently

[slate haven]

I mean. I dont have the total width/height or rows or even columns. I just know that i wanna fit 120 blocks (or any number of blocks) on a plane of some size. Now I am confused how to determine the width and height? BEcause I am thinking that i would need the plane's width and height right?

[naive pawn]

you would, yes

[slate haven]

and how would i get that

[naive pawn]

you could define it yourself

[languid spire]

looks fine

[naive pawn]

just define that the base plane is some size and then base your other calculations on that assumption

[slate haven]

i am sorry, but can you explain it a little more

[quick pollen]

it says its out of range

[slate haven]

how do i assume it

[naive pawn]

wouldn't you need to have the int x outside the lambda

[languid spire]

no

[verbal dome]

Yes

[naive pawn]

you just make a decision

[languid spire]

are projectiles and pools the same length

[slate haven]

oh

[quick pollen]

well I only create projectiles.Count amount of pools

and projectiles.Count right now is 1

[languid spire]

so Pools.Length should also be 1

[quick pollen]

ill try to log it

[languid spire]

wait Pools is a List is it not

[quick pollen]

yeah

    [SerializeField] List<GameObject> projectiles = new List<GameObject>();
    public List<IObjectPool<GameObject>> Pools = new List<IObjectPool<GameObject>>();
    public static ObjectPoolingProjectiles Instance;
    private void Awake() {
        for(int i = 0; i < projectiles.Count; i++){
            Debug.Log(Pools.Count);
            Pools[i] = new ObjectPool<GameObject>(() =>
            { int x = i; return CreatePooledItem(x); }, OnTakeFromPool, OnReturnedToPool,
            OnDestroyPoolObject, true, 20, 50);
        }
        Instance = this;
    }```

I do create it

[languid spire]

no, needs to be an array of length [projectiles.Count]

[naive pawn]

if it's inside the lambda, it's not gonna actually do anything, it'll just get the last value of i

i just tested this

[languid spire]

no it wont, if you do not have the x you have no lambda capture so then it will have the wrong i value

[naive pawn]

what is the "right" i value? the last value or the value for each iteration?

[languid spire]

value per iteration of course

[verbal dome]

So initialize it elsewhere or use a const for the projectile pool count

[naive pawn]

so having the x = i inside the lambda would just get the last value of i, same as if you just used i in the lambda directly

[quick pollen]

fair

[naive pawn]

because it's also used in the lambda

[quick pollen]

well, I'm still having issues with understanding lambdas

[languid spire]

public IObjectPool<GameObject>[] Pools;
```private void Awake() {
   Pools = new IObjectPool<GameObject>[projectiles.Count];
...

[quick pollen]

now
GameObject newPooledObject = Instantiate(projectiles[i]);
is out of range

[quick pollen]

i did it yeah

[languid spire]

edited

[quick pollen]

yes, thats what I did

for some reason i is 1

it should be 0

[verbal dome]

Because of what Chris said

[naive pawn]

is projectiles.Count 1 here?

[quick pollen]

yes

[naive pawn]

yeah the capture is the issue

[quick pollen]

so I should make the x non-local?

[naive pawn]

well it'd still be local

just local to a different part

[quick pollen]

well, yeah

not local to the lambda, I meant

[verbal dome]

You just move the int x = i before the lambda

[quick pollen]

yeah now it works

[naive pawn]

    private void Awake() {
        for(int i = 0; i < projectiles.Count; i++){
            Debug.Log(Pools.Count);
            int x = i;
            Pools[i] = new ObjectPool<GameObject>(() => CreatePooledItem(x), OnTakeFromPool, OnReturnedToPool, OnDestroyPoolObject, true, 20, 50);
        }
        Instance = this;
    }

[quick pollen]

man, this is getting me kinda brainfucked ngl

[naive pawn]

lambdas are just functions as objects

[quick pollen]

I just need to understand what that means for me

I know what functions and objects are

well, objects more or less

[languid spire]

you are missing the int x = i

[quick pollen]

o right true

[languid spire]

inside the for

[quick pollen]

tyty

thats just

i dont even

[naive pawn]

if you use i directly in the lambda, that's kinda "referencing" the i variable
when the lambda is called, it retrieves whatever i is currently, instead of what i was when the lambda was made
since i changes, the value used when the lambda is called also changes

when you assign a local int x = i; the same situation happens, except that x doesn't change (each loop iteration creates a new x) so the "current" value that's retrieved is the same value when the lambda was made

[quick pollen]

also the fact that I didn't need no Func or Action

[verbal dome]

this is captured because CreatePooledItem is a member of this (your class)

[naive pawn]

ObjectPool says it does that, you just have to supply a matching value

[quick pollen]

yeah no I understand that part
its passed by reference, not by value

[verbal dome]

Any method that returns a GameObject will fit where it wants a Func<GameObject>.

[quick pollen]

basically like a & pointer from c++

[naive pawn]

no not exactly

there's a different analogue to that

...or is it...

[quick pollen]

well I get that part

I just don't get what lambdas do for me

[naive pawn]

yeah ok it is like &var in c/c++

in fact c++ also has the same concept of lambda captures

just that here, it's always capture by reference, whereas in c++ you can decide if it's by reference or by value

[quick pollen]

yeahh

so I have that right

[languid spire]

in this case they allow you to pass a parameter into a method which you otherwise would not be able to do

[quick pollen]

yeah, that part I understand, but what else are they generally used for?

[naive pawn]

lambdas specifically or delegates in general?

[quick pollen]

I think both

I haven't even heard of delegates before

I mean right now I have some other issues with some mathematical calcs

[naive pawn]

lambdas are just a handy way to fulfill a delegate/action/func without needing a method
it's an "anonymous" method/function

[languid spire]

this is the most common use

[verbal dome]

foreach(var thing in myList.Where(item => item.someBool))```
Used with Linq often too

This would let you iterate all things in the list that have someBool enabled

[quick pollen]

need to find some formula to bounce projectiles off of walls
right now I just do transform.rotation = Quaternion.Inverse(transform.rotation);

[verbal dome]

Vector3.Reflect the velocity with the collision normal

[quick pollen]

what if you just checked if item.someBool is true, and did something if it was?

[naive pawn]

delegates/actions/funcs are about passing functions around as first-class members (objects)
sometimes you don't want to do something directly, but you want to tell something else to do something many times, or later, for example
like the filter osmal mentioned, or using actions for tasks (which you wouldn't do in unity, but just as an example)

[languid spire]

but that can (and should) be done without using Linq and lambdas. In the current use case there is no other option

[naive pawn]

you could, that would have the same behavior basically

[verbal dome]

You can do that without lambdas, not the best exmaple in that sense

[quick pollen]

I see

[quick pollen]

wdym collision normal? whats the normal of the collision? its rotation?

[verbal dome]

How are you detecting collisions? Physics/rigidbody? Manual casts?

[quick pollen]

physics

[naive pawn]

a normal is a vector perpendicular to a plane
in this case, the plane of the collision would be tangent to the collision points
so the normal of the collision would be the "direction" of the collision

[verbal dome]

Collision2D has contacts and GetContact()

Contacts have normals

[quick pollen]

how do I calculate that?

[naive pawn]

you don't, you let the smart people writing unity do that lol

see osmal's answer

[verbal dome]

You get it from Collision2D in OnCollisionEnter2D

[quick pollen]

oh, alright

its just weird that I'm using a 2D function

hold on, yeah, how would I go about that

[verbal dome]

Oh wait don't, if you use 3D physics use the 3D version

[naive pawn]

https://docs.unity3d.com/6000.0/Documentation/ScriptReference/ContactPoint-normal.html

[verbal dome]

I didnt properly look at your video, looked 2D at a glance lol

[quick pollen]

ahh, thought so yeah

[verbal dome]

It's similiar in 3d tho

[quick pollen]

thing is, I'm using triggers

which have colliders, not collisions

[verbal dome]

Why?

[quick pollen]

because I want the projectiles to be triggers

[verbal dome]

That doesnt mean that the walls should be triggers does it

[quick pollen]

the walls arent, but I'm detecting collision through the bullet

not through the walls

[verbal dome]

There's no way to get a contact from a trigger enter

Because no contact happened

[quick pollen]

so I need to write a script and place it on every single wall?

is there no better way to calculate it?

[verbal dome]

Or just use the bullet script?

[naive pawn]

why exactly?

[quick pollen]

so it doesnt push the tank around whenever it gets fired from the barrel, as an example

[verbal dome]

That's a huge bandaid

[naive pawn]

should it hit the tank after it's fired?

[quick pollen]

            transform.rotation = Quaternion.Inverse(transform.rotation);```
also, if I do this mess, then the horizontal walls work, but not the vertical ones

[verbal dome]

Just disable collisions between the tank and the projectile

Physics.IgnoreCollision

[quick pollen]

well thatd mean that the tank gets stuck

[naive pawn]

what?

[verbal dome]

Or use the collision layer matrix

[quick pollen]

but I want you to be able to be killed by your own projectiles, so I have to make a grace period

[verbal dome]

Sure, make one

[naive pawn]

have you considered, spawning it a bit in front of the barrel

or making the barrel not have collision

[quick pollen]

wouldnt be good because then, if you were moving in the direction you were firing, youd still die

[languid spire]

@quick pollen https://stackoverflow.com/questions/31641522/how-to-get-contact-points-from-a-trigger

[quick pollen]

I mean I switched to collisions already

now I just need to find the int I need to feed into the GetContact()

[naive pawn]

how fast are your tanks moving

[quick pollen]

bout the same speed as the projectiles

some projectiles can move slower, others faster

[naive pawn]

0, probably

[naive pawn]

uh if your projectile moves slower than your tank and you go in the same direction you're shooting i think that would make sense for it to die

[verbal dome]

All of the suggestions in that stackoverflow thread have issues anyway

[quick pollen]

even with both methods, I get this

[verbal dome]

Who told you to put a rotation there

[naive pawn]

!collab 👇

[eternal falcon]

:loudspeaker: Collaborating and Job Posting

We do not accept job or collab posts on Discord.
Please, use Discussions to promote yourself as job-seeking, advertise commercial job offers, or look for non-commercial projects to participate in:
• Collaboration & Jobs

[languid spire]

true, but they are a starting point rather than just saying 'can't be done'

[verbal dome]

Yeah, though I would just use raycast/spherecast for the movement and collisions in the first place (if not collisions)

[quick pollen]

what am I meant to use then?

[sand sonnet]

but nobody will answer me on there and i wont get notified if someone does answer me

[naive pawn]

Vector3.Reflect the velocity with the collision normal

[verbal dome]

You really still cant use the documentation?

[naive pawn]

...ok? doesn't mean job posts are accepted here

[languid spire]

irrelevant

[quick pollen]

oh, im stupid

[naive pawn]

!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.

[quick pollen]

its just that there it changed the position

[naive pawn]

but also... Gey key down?

[sand sonnet]

im just suggested that you add something like a job board

[frail kettle]

lol nvm just saw the word get became gey for no reason XD

[languid spire]

no thanks

[naive pawn]

you didn't suggest that.. you just posted a job offer

[sand sonnet]

was suggesting that here

[naive pawn]

we have a suggestion channel
https://discord.com/channels/489222168727519232/1265239843328229416

(also, that wasn't much of a suggestion, that just seemed like a complaint...)

[sand sonnet]

Im very sorry that you took it the wrong way

[naive pawn]

how would i take that as a suggestion, you aren't even suggesting anything there

anyways off topic

this server isn't a place for job posts

end of that

if you need help, see below
!ask

[eternal falcon]

:thinking: Asking Questions

:mag: Search the internet for your question!
:book: Use the API Scripting Reference and User Manual and this troubleshooting site for commonly posted issues.
:wrench: Attempt to debug your issue.
:thought_balloon: Find an appropriate channel by reading the name and description in #🔎┃find-a-channel
:grey_question: And don't ask to ask, ask a full question illustrating with screenshots if needed.
-# For more posting guidelines, go to #854851968446365696

[quick pollen]

this should work, yes?
if(gracePeriod > 0) Physics.IgnoreCollision(gameObject.GetComponent<Collider>(), other.collider, true);

ill probably get a ref to the collider in awake

[verbal dome]

What is other?

You cant ignore collisions after it already happened

[quick pollen]

private void OnCollisionEnter(Collision other) {

oh

idk how to do it then

[naive pawn]

set it when you fire the projectile, and then after a delay, set it to false

[quick pollen]

yes but ignore which collider

just the player's i guess?

[naive pawn]

yes

make the projectile and the player tank ignore each other

[quick pollen]

problem is, this wont work with enemy tanks

[naive pawn]

use a coroutine to do the delay bit, probably

[quick pollen]

cuz it wont ignore enemy tanks shooting this

[naive pawn]

why wouldn't it

[quick pollen]

I want players and bots using the same projectile

[naive pawn]

ok?

how's that an issue

[quick pollen]

but if I set the collider to be just the player, it will ignore when the player shoots, but not when the enemy shoots

so the enemy tanks would instantly explode

[naive pawn]

make the projectile and the shooter ignore each other

like... that's not that hard

[quick pollen]

how do I check who shot it?

[naive pawn]

you don't

you just have a shooting script on each enemy, right?

you just get the current gameobject's collider

[quick pollen]

rn i only have the player, but yes

[naive pawn]

you don't need to check

the shooter is whoever this script is on

[quick pollen]

which "current gameobject"?

[naive pawn]

the "current" one that's shooting

[verbal dome]

If your projectiles are pooled then you want to re enable collision when returning it to the pool

[quick pollen]

also, the problem is that the projectiles go off on weird trajectories due to me not using triggers

[verbal dome]

Because they are hitting the shooter right?

[quick pollen]

yes

[verbal dome]

Isnt that the very issue we are talking about??

[naive pawn]

you didn't do the grace period correctly then?

[quick pollen]

thats my problem!!

i cant implement the grace period

thats what I'm talking about

[naive pawn]

SAM tanks 😭

[quick pollen]

i dont know which collider to ignore

[naive pawn]

the one on the shooter

the ability to shoot will be duplicated to each tank

[quick pollen]

yes, how do I tell the bullet who shot him?

[naive pawn]

so you'd just get the current gameobject's collider and have it ignore the instantiated bullet's collider

[naive pawn]

gameObject.GetComponent<Collider>()

or just GetComponent<Collider>()

[quick pollen]

thats the bullet's collider

not the tank who shot him's collider

[naive pawn]

is shooting a function of the bullet?

[quick pollen]

what

bullets dont shoot?

[naive pawn]

exactly

[verbal dome]

What class does the shooting?

[naive pawn]

the shooting script would be on the tanks, right

[quick pollen]

a class on the player currently

[quick pollen]

yes

[naive pawn]

yeah, so GetComponent<Collider>() would get the player's collider

[quick pollen]

i have an idea maybe

[verbal dome]

So when the tank shoots.. get its collider and ignore it with the bullet collider

[quick pollen]

okay it works, thanks!

[naive pawn]

public Collider bulletPrefab;
public float bulletGracePeriod;

Collider myCollider;

void Start() {
  myCollider = GetComponent<Collider>();
}

void OnShoot() {
  StartCoroutine(Shoot())
}

IEnumerator Shoot() {
  Collider bulletCollider = Instantiate(bulletPrefab);
  Physics.IgnoreCollision(myCollider, bulletCollider, true);
  yield return new WaitForSeconds(bulletGracePeriod);
  Physics.IgnoreCollision(myCollider, bulletCollider, false);
}
```does this make sense
this is not complete code, but you should be able to get the idea

[quick pollen]

except for this

this is the reflect thing

rb.velocity = Vector3.Reflect(transform.position, other.GetContact(0).normal);

[verbal dome]

You should not give it a position either

[quick pollen]

what should I give it then?

the velocity?

[naive pawn]

...dude

[verbal dome]

Are you being serious

[quick pollen]

I have no clue what its asking

The direction vector towards the plane.

thats the velocity

[naive pawn]

you responded to this

[verbal dome]

And this

Like come on

[quick pollen]

I know what normals are

but I didnt get what they had to do with it

[naive pawn]

do you know what reflection on a plane looks like

[quick pollen]

and yeah, I still dont get it

[verbal dome]

However now that you are using colliders and not triggers, you need to keep track of your previous velocity in a variable, updating it in fixedupdate

[quick pollen]

I know

but what does a reflection on a cube looks like

[verbal dome]

Because in OnCollisionEnter the velocity has already changed

[quick pollen]

I am

[naive pawn]

you don't do that, you do reflection on planes

[quick pollen]

        rb.velocity = transform.forward * projectileSpeed * Time.deltaTime;
    }```

[naive pawn]

1 side plane of the prism

[quick pollen]

well the wall is a cube

[naive pawn]

yeah but you don't reflect off the entire wall

[verbal dome]

That's not "keeping track" of the velocity, that's just assigning to the velocity

[naive pawn]

you reflect off a side of the wall

[verbal dome]

I mean storing it in a Vector3

So you know the velocity that you had before the collision

[quick pollen]

yeah, but how do I change it then?

[naive pawn]

uhh this is not how velocity works

deltaTime doesn't make sense there

[verbal dome]

Oh yeah that's cursed

[quick pollen]

I checked like 2 vids and 3 forums

all of them used deltaTime

so I have no fucking clue

[naive pawn]

for Translate, maybe

[verbal dome]

Well, deltaTime is actually fixedDeltaTime in FixedUpdate

[naive pawn]

or for acceleration

[quick pollen]

I know that

[verbal dome]

Still doesn't make sense though

[quick pollen]

what else am I meant to type then?

[naive pawn]

Time.deltaTime is in seconds
velocity and projectileSpeed would already be in meters per second

so now you're assigning velocity to a value of meters, instead of meters per second

[verbal dome]

Just remove the * Time.deltaTime

And adjust the speed accordingly

Then your projectileSpeed represents an actual speed in m/s

[naive pawn]

anyways since you're just using forwards as the travel direction, you could use that instead of the velocity

[naive pawn]

presumably you'd also want it to rotate instead of just changing velocity direction

[quick pollen]

yeah

[verbal dome]

The collision can change the forward vector though

[quick pollen]

I tried currentVelocity = Vector3.Reflect(currentVelocity, other.GetContact(0).normal);

[verbal dome]

If you mean using Vector3.Reflect(transform.forward, ...) in collisionenter

[quick pollen]

im still not understanding

[verbal dome]

rb.velocity =

[quick pollen]

    private void FixedUpdate() {
        rb.velocity = currentVelocity;
    }
    private void OnCollisionEnter(Collision other) {
        if(other.gameObject.CompareTag("Wall")){
            currentVelocity = Vector3.Reflect(currentVelocity, other.GetContact(0).normal);
            bounces--;
        }
    }
}```

[verbal dome]

Why did you change the other line, not the line i replied to?

Aah

[quick pollen]

didnt change anything yet

[naive pawn]

would the change happen before or after OnCollisionEnter though

[verbal dome]

Collision has happened at that point, so pretty sure its before

87% sure

[quick pollen]

man

its just not working

its shooting in random directions

its not bouncing off properly

the bullets are spinning

[verbal dome]

rb.velocity = currentVelocity;```
Told you to store the velocity in a variable. Does this do that?

Hint: It's the other way around

[quick pollen]

yes, cs private void OnEnable() { lifetime = _lifetime; projectileSpeed = Mathf.Abs(projectileSpeed); bounces = _bounces; gracePeriod = _gracePeriod; currentVelocity = transform.forward * projectileSpeed; }

oh

but how else am I meant to do it?

[verbal dome]

You should honestly slow down a bit

Feels like you barely read most of our instructions

[shadow briar]

Hello everyone, im got a question about interfaces.

**Context: **
Making a very basic 2d shooter.
Had a issue where it only checked the top component if it has a Interface.

I saw on Unity learn it basically goes through each component, making lists with a loop, checks if said component implements the interface, and than go on from there.
Did some research, found a video by Infalliable Code, where they use Interfaces a bit differently from the Unity Learn, took the general concept and added it to my bullet script which is below:

private void OnTriggerEnter2D(UnityEngine.Collider2D collision)
{
    GameObject TempGO = collision.gameObject; // Get the game object so we can work with it.
    var dmgOBJ = TempGO.GetComponent<i_DMG>(); // Try and get the interface.
    if (dmgOBJ == null) return; // If no, return.
    dmgOBJ.OnHit(dmgOnHit); //Success, perform the I_DMG method.
    Destroy(gameObject); // destroy self
}```
And this works, even if i add in test scripts with no interfaces, so im happy with that.

**My main question is:** Is this generally a better way to use interfaces, less prone to errors and why does it work. 
i was under the impression that ``GetComponent`` simply got the top component, since i did a little test where i put a hitScript under a test script and it showed a error so that made me think why.
I just want to understand the why, to figure it out for future use.

[quick pollen]

currentVelocity = rb.velocity, but then how do I change rb.velocity

[quick pollen]

I am trying to, but theres 3 issues being covered at the same time

[verbal dome]

Hence the "slow down" part

Focus on 1 issue

[quick pollen]

but all of them corelate to each other

[verbal dome]

Focus on 1 issue

[quick pollen]

because they are all based on physics, and my physics is fucked

[naive pawn]

GetComponent<T> gets a component that matches T

[quick pollen]

right now, if I try to shoot the projectile, it comes out in random directions, spinning like crazy

problem number 1

[swift crag]

btw, check out TryGetComponent if you're going to be doing this a lot

if (!thingy.TryGetComponent(out IFoo foo))
  return;

foo.Bar();

[verbal dome]

Put the whole script in a paste site and don't change it yet

[swift crag]

It makes for very readable code.

"if i try to get the component and that fails, return"

[verbal dome]

I find myself using the TryGet pattern a lot in my own code too

[swift crag]

I almost never use GetComponent

[quick pollen]

https://pastebin.com/PXaT3zF6

[swift crag]

Actually, let's do a codebase search...

rider isn't open, dammit

[verbal dome]

So first of all, the FixedUpdate part should be currentVelocity = rb.velocity;
Before that though, set the velocity to whatever you need it to be

[shadow briar]

So, it isnt just the top component? okay that makes more sense.

[shadow briar]

Ah, thank you, i'll try and use it more in future notes

[swift crag]

I use it 23 times, and most of them are for getting HDAdditionalLightData, ha

[swift crag]

It would do that if you did something like GetComponent<Component>!

the vaguest request possible

[naive pawn]

well no since GetComponent doesn't use the order in the inspector

[swift crag]

I was under the impression that it did

I don't think I've ever relied on that, mind you

[naive pawn]

GetComponent returns only the first matching component found on the GameObject, and components aren't checked in a defined order.

[swift crag]

Ah, figures

It probably has something to do with the order most of the time, but there is no guarantee

[naive pawn]

i'd guess insertion order probably

[verbal dome]

At that point you should use serialized references anyway :p

[naive pawn]

but like, no guarantees

[verbal dome]

Get the script component that has references to specific colliders

[swift crag]

Yeah, if you need to distinguish between multiple components that match the same type

There is no coherent way to do that without serialized references

[quick pollen]

okay, did that

[swift crag]

(other than getting all components that match the type and then picking one based on their members)

ah yes

[quick pollen]

i set the rb.velocity in enable

still doesnt work

[swift crag]

FindObjectsByType<Object>(FindObjectsSortMode.None)

[quick pollen]

shoots in random directions

I'm not even sure this works

[verbal dome]

Check if it's still colliding with the tank

Or its turret, if it has a collider

[swift crag]

It may be too late by that point

[verbal dome]

You were supposed to do the ignore collision when you shoot the bullet

That was my idea, at least

You just need to enable the collision again after the grace period

[naive pawn]

😔
if you were wrong this wouldve been so much easier lmao

[shadow briar]

So, just trying to make sure i understood interfaces, or getting access to interfaces from other scripts:

if (!TempGO.TryGetComponent(out i_DMG dmg)) { return; }
dmg.OnHit(dmgOnHit);

this in theory would always get access to the interface? as long as there was something that had a i_DMG interface on it in this context, it'd call it and send the value over for that script to do its "OnHit" stuff.

[quick pollen]

still completely random

            Debug.Log("shot");
            GameObject proj = ObjectPoolingProjectiles.Instance.Pools[0].Get();
            proj.GetComponent<BasicBullet>().shooter = gameObject.GetComponent<Collider>();
            Physics.IgnoreCollision(gameObject.GetComponent<Collider>(), proj.GetComponent<Collider>(), true);
            proj.transform.SetPositionAndRotation(tankCannon.transform.position, tankCannon.transform.rotation);
        }```

still random direction

[naive pawn]

yes

[verbal dome]

Is this script on the tank object? Or is it on the turret? Does the turret or the tank have other colliders?

[quick pollen]

tank

wdym "other colliders"?

no, both of them have 1 collider

[verbal dome]

Log the thing you hit in OnCollisionEnter

[quick pollen]

this is why I didnt want to use OnCollisionEnter

[shadow briar]

okay, cool.
I was concerned that i'd have to do the list loop stuff.

But thats cool, thank you and @swift crag for the input.

[verbal dome]

other.name

[verbal dome]

Okay go back to using triggers then

[quick pollen]

randomly hits tank

sometimes it does sometimes it doesnt

i just fired for like 5 seconds without moving, in the same direction

[swift crag]

sanity check by turning off the tank collider

[quick pollen]

it is STILL BAD

[swift crag]

✨

[quick pollen]

i have 0 fucking clue

im using triggers rn

[swift crag]

that's good, actually

[quick pollen]

the thing that fucked it up is the whole currentVelocity thing

[swift crag]

you have gained information

[quick pollen]

it worked perfectly before that

[swift crag]

are you making it inherit velocity from the tank?

[quick pollen]

    private void FixedUpdate() {
        currentVelocity = rb.velocity;
    }```

[quick pollen]

no

[stoic oracle]

Spherecast isn't detecing a moving platform

[quick pollen]

    private void OnEnable() {
        lifetime = _lifetime;
        projectileSpeed = Mathf.Abs(projectileSpeed);
        bounces = _bounces;
        gracePeriod = _gracePeriod;
        currentVelocity = transform.forward * projectileSpeed;
        rb.velocity = transform.forward * projectileSpeed;
    }```

maybe the velocity gets set before the transform.forward is set to be the cannon's forward?

[swift crag]

oh, are you pooling projectiles here?

[quick pollen]

yes

...kinda

[swift crag]

can you share the updated code so I can see what you're currently running?

i'm pretty suspicious of using transform.forward

perhaps you're getting the direction the bullet had the last time it was fired

[quick pollen]

https://pastebin.com/qHSdzZ5W

[quick pollen]

which should be impossible

because I update it every single time I fire a projectile

    public void FireInput(InputAction.CallbackContext callbackContext)
    {
        if(callbackContext.performed){
            Debug.Log("shot");
            GameObject proj = ObjectPoolingProjectiles.Instance.Pools[0].Get();
            proj.GetComponent<BasicBullet>().shooter = gameObject.GetComponent<Collider>();
            proj.transform.SetPositionAndRotation(tankCannon.transform.position, tankCannon.transform.rotation);
        }
    }```

[swift crag]

Too late!

OnEnable already ran

[quick pollen]

I thought so

but what can I do then?

[swift crag]

You'll need to give it a Fire() method or something

set up the bullet and then call Fire

[quick pollen]

I cant set the rotation and position before I get it

[swift crag]

This is a common issue

Awake and OnEnable are too fast; Start is too slow

[quick pollen]

but if I call Get, it instantly instantiates and activates the object??

[swift crag]

It either instantiates a new copy or retrieves one from the pool

[quick pollen]

theres 0 frames between creation and activation

[swift crag]

OnEnable runs the instant that a Behaviour becomes enabled

[quick pollen]

well rn it only instantiates whenever I start firing, it doesnt pre-bake

[swift crag]

Right, but I presume that bullets go back in the pool after they expire

[quick pollen]

what can I do then? i cant do this

[quick pollen]

yes

[swift crag]

...why?

[quick pollen]

thats why they start off random

[quick pollen]

if I set it inactive, it gets set back into the pool

which i dont want

[swift crag]

I didn't say to make the bullet inactive

[quick pollen]

but how can I set the position before it gets set active then?

[swift crag]

You don't

I just said that you need to give it another method that'll configure the rigidbody

Basically, move most of OnEnable into a Fire method that you explicitly call

[quick pollen]

but I can't configure the rigidbody before that

[quick pollen]

and when do I call that?

lemme guess, when I enable it

not solving anything

[swift crag]

after the bullet has been set up properly

[quick pollen]

wait, I think I get it

[swift crag]

var bullet = GiveMeBullet();
bullet.florps = 3;
bullet.explosion = "VERY BIG";
bullet.Fire();

[verbal dome]

I personally prefer a florps value of 9 but you do you

[swift crag]

OK boomer

[quick pollen]

    public void FireInput(InputAction.CallbackContext callbackContext)
    {
        if(callbackContext.performed){
            Debug.Log("shot");
            GameObject proj = ObjectPoolingProjectiles.Instance.Pools[0].Get();
            proj.GetComponent<BasicBullet>().shooter = gameObject.GetComponent<Collider>();
            proj.transform.SetPositionAndRotation(tankCannon.transform.position, tankCannon.transform.rotation);
            proj.GetComponent<BasicBullet>().Fire();
        }
    }``` in the tank

    public void Fire(){
        lifetime = _lifetime;
        projectileSpeed = Mathf.Abs(projectileSpeed);
        bounces = _bounces;
        gracePeriod = _gracePeriod;
        currentVelocity = transform.forward * projectileSpeed;
        rb.velocity = transform.forward * projectileSpeed;
    }```in the bullet

[swift crag]

Also, you shouldn't be pooling GameObject. You should be pooling the BasicBullet type!

If you want one pool per bullet type, consider having a method that looks like this

[quick pollen]

no, I will have different projectiles, not all of them will have basicbullet

[wintry quarry]

One pool per type

[quick pollen]

okay I fixed it

[swift crag]

Dictionary<Type, SomePool<Object>> pools;

public void Get<T>() {
  Type bulletType = typeof(T);
  return pools[bulletType].GetThing();
}

[quick pollen]

id need to write a new script for every new projectile type i add

[wintry quarry]

No you wouldn't

[verbal dome]

I already suggested a pool per type but they keep coming up with problems that don't exist

[swift crag]

wanna see the pool to end all pools?

https://paste.myst.rs/hgtb49yi

well, it's not a pool, it's a memoizer

[wintry quarry]

I don't think you've thought through how it would work otherwise. What happens when the pooled object you pull out doesn't have the component type you want?

You need one pool per type and no it doesn't involve writing a new pool for each type just use a Dictionary

[quick pollen]

    private void OnTriggerEnter(Collider other) {
        if(other.gameObject.CompareTag("Wall")){
            Debug.Log("wall");
            var collisionPoint = other.ClosestPoint(transform.position);
            var collisionNormal = transform.position - collisionPoint;
            currentVelocity = Vector3.Reflect(transform.forward, collisionNormal);
            bounces--;
        }
    }```this part still doesnt work

[swift crag]

I presume that Pools[0] means "the basicbullet pool"

which sounds gross

[swift crag]

private static readonly Dictionary<object, IDictionary> Maps = new();

This is one hell of a type

it's about one step away from Javascrtipt

[quick pollen]

i havent gotten to that part yet

[naive pawn]

1 step away from ts maybe..

[quick pollen]

because like 6 other issues came up before that

[verbal dome]

I think I subconsciously avoid using readonly because it makes the var declarations so long

[quick pollen]

projectiles just pass through

[verbal dome]

Why would they not pass thru?

You are only changing currentVelocity, not rb.velocity

[swift crag]

which you notably overwrite every physics step 😉

[quick pollen]

oh right

[swift crag]

This can memoize ANYTHING, keyed on the constructor function

a bit diabolical

[quick pollen]

i dont feel like getting into a whole different rabbit hole currently, im sorry

[swift crag]

You would do something a bit less audacious for your pools

[swift crag]

Just this, really

[quick pollen]

i spent 5 hours setting up the pool just to go on and spend 10 hours setting up the memoizer?

[swift crag]

it is an illustrative example of how you can handle many kinds of things without writing a separate script for each type

[quick pollen]

rb.velocity = Vector3.Reflect(transform.forward, collisionNormal);, now it just slows down and passes through

[naive pawn]

you're setting the velocity to a direction

[quick pollen]

still doesnt change the fact that it keeps moving in the same direction

[naive pawn]

right...

var collisionNormal = transform.position - collisionPoint;
this is not a normal

[swift crag]

isn't that bullet spinning wildly?

transform.forward has nothing to do with the velocity

[quick pollen]

tried using currentVelocity, did even less

[quick pollen]

great

[naive pawn]

one sec

so it is a normal, just offset a bit, for a flat surface should be fine...

[swift crag]

Ideally you should just go back to using non-trigger colliders

[quick pollen]

which causes even more problems than it solves

[swift crag]

such as...?

[verbal dome]

The whole point was to use solid colliders and reflect currentvelocity with the normal

[swift crag]

remember that the bullets weren't hitting your tank's turret -- they were getting a totally bogus velocity

[quick pollen]

nono, they were

thats what caused the bogus velocity in the beginning

i kept getting logs from hitting the turret

[naive pawn]

after you did the grace period thing?

[quick pollen]

yes

[swift crag]

you need to ignore collisions immediately, not in Update.

[quick pollen]

    public void Fire(){
        lifetime = _lifetime;
        projectileSpeed = Mathf.Abs(projectileSpeed);
        bounces = _bounces;
        gracePeriod = _gracePeriod;
        currentVelocity = transform.forward * projectileSpeed;
        rb.velocity = transform.forward * projectileSpeed;
        Physics.IgnoreCollision(shooter, bulletCollider, true);
    }```

I do it in update too

increased the grace period, it seems to be better

didnt I JUST fix that fucking issue with the rotations not being okay??

[swift crag]

i think you need to take a break

[quick pollen]

i do, i have to go in 10 mins

I just really wanted to fix this cuz its so fucking stupid

I have 0 idea as to why it comes out spinning

it says theres no collision between anything

[swift crag]

You are pooling objects, so any state from the object's past life is perserved

This includes angular velocity.

[quick pollen]

but I literally set the velocity upon fire?

[queen adder]

I want to create a button Prefab, that's finds all the componates by itself. I was think about GetComponentinChilden, but i assume: It just uses the first TMP_Text every time. How to distinguish them by name?

[swift crag]

Angular velocity has nothing to do with linear velocity.

They are two separate values.

[quick pollen]

ill just set it to 0 then

that seems to fix it, thank you!

[timber tide]

they even renamed velocity to linear velocity to not confuse people this update lol

[quick pollen]

now its just the same issue with not reflecting

[quick pollen]

in code its still velocity

[timber tide]

ya not using 6?

[quick pollen]

no more

its way too buggy

[obsidian plaza]

hv i not seen yall talking in here for like 2 hours

r u fixing the same thing

[swift crag]

I have not observed any serious problems in 6

[obsidian plaza]

same

[quick pollen]

i have, with avatars mainly

theyre extremely buggy to edit

[swift crag]

that's always been busted

[timber tide]

Any reason you don't just serialize the buttons text explicitly. Otherwise, you'd probably want to use GetComponentsinChildren which would return an array of them

[swift crag]

I've had headaches in 2022 editing humanoid avatar definitions for my VRChat avatars

[quick pollen]

not in 2021

[obsidian plaza]

oh wait @quick pollen u play realm cool

[quick pollen]

yupp

[swift crag]

mostly involving the muscle settings being very fiddly

[quick pollen]

also @swift crag last thing before I go, the projectile doesnt face the way its been reflected in, idk what to do for that

transform.rotation = Quaternion.LookRotation(rb.velocity); maybe?

finally it works

ty all for the help!

man has this been a drag

[quick pollen]

they only got fucked over here because of colliding with each other, which is fine

[queen adder]

I'm i dumb? Does the Button have no onClick ? I already google it, is onClick stiil up to date? https://docs.unity3d.com/2018.3/Documentation/ScriptReference/UI.Button-onClick.html (using TMPro;
using UnityEngine;
using UnityEngine.UI;)

[teal viper]

Share the whole script. !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.

[queen adder]

using TMPro;
using UnityEngine;
using UnityEngine.UI;


public abstract class Button : MonoBehaviour
{
    public ButtonDataBasic myData;
    private Button myButton;

    private Image mySprite;
    [SerializeField]private TMP_Text myHeadText;
    [SerializeField]private TMP_Text myDescription;
    [SerializeField]private TMP_Text myPriceTag;
    

    private void Awake() {
        myButton = GetComponent<Button>();
        

        if (myHeadText == null || myDescription == null || myPriceTag == null ) {
            Debug.LogError($"Button{name} misses componete");
        }
    }
    private void Start() {
        myButton.onClick.AddListener(UpdateButtonValue());
    }

    private void Update() {
        ActivedButton();
    }

    public void UpdateButtonValue() {

    }

    public void ActivedButton() {
        if(myData.Value > LogicManager.Instance.Score) {
            myButton.enabled = false;
        } else {
            myButton.enabled = true;
        }
    }
}

[teal viper]

Is that only in the IDE? Does the code actually compile? Or do you get an error in the console?

[runic lance]

wait, your class is also called button

[teal viper]

Didn't notice that lol

[runic lance]

yeah that was subtle 😂

[queen adder]

Renamed it, now the error is gone Thanks!

[runic lance]

if you really want to call your class Button, you need to specify that the myButton variable is of the UnityEngine.UI.Button type

[queen adder]

Ah thats possiable? Thanks i will try 🙂

[gleaming turtle]

Hi, I've got an issue where a game object, that is parented to another game object, won't move consistently with it's parent when it's moved, it'll move but very weirdly. the child game object has a rigidbody but is set to kinematic, the parent can have a rigidbody or not & the movement is still inconsistent. anyone know why this might be? i can provide a clip if necessary

[teal viper]

Providing a vieo would help

[teal viper]

Moving the object via transform and especially the gizmos is gonna be very unreliable. You should move it in code instead and using physics compatible ways(ideally).

[gleaming turtle]

okay let me show you a different example of when it's attached to another game object with a rigidbody

[fervent abyss]

im trying to make the torso rotate and i have a physics body (rigidbody) thats being moved by .Move, but my joint doesnt want to rotate. im trying to make so the torso looks down when the player is rotated, like gravity making objects fall towards it irl

[teal viper]

Another possible cause is the scaling of the objects. Try with both of them scaled to 1

[gleaming turtle]

the spear is scaled to 12, 12, 12 as it is tiny otherwise, and all objects it's a child of are uniformly scaled as well

i'm gonna have to send a google drive link for next clip as it's too big for discord :(

https://drive.google.com/file/d/15w0KYcQqnV8pKlGxO1rkQsII6wR3v_LC/view?usp=sharing

[teal viper]

1. You should adjust your visuals scale in the model import settings.
2. You can upload it to https://streamable.com/ or a similar service and paste a link. It should be viewable in the discord then.

[gleaming turtle]

ug

I'll look into adjusting visual scales on import now

[teal viper]

Upload from your PC. Not google drive.

[fervent abyss]

ready to send 5$ for this

[cosmic dagger]

That's not the website they linked . . .

[gleaming turtle]

that means i have to create an account annoyingly, alright give me a min

[teal viper]

I don't think you need. Just click here

[gleaming turtle]

https://streamable.com/r5kntc

[verbal dome]

You were previously moving the spear with transform. What does your current code look like?

[gleaming turtle]

here's the code on my spear that controls flight & the piercing functionality (it's messy, this is my first proper project, i'm learning & using chatgpt so please no judgements lol)

[verbal dome]

Yeah I don't like the part in FixedUpdate

But first, try disabling interpolation and see if that helps 🤔

@gleaming turtle Actually, first try commenting out this part: rb.freezeRotation = true;

[gleaming turtle]

alright trying this now

[bright arch]

my coroutine only runs the first time, it is meant to run when i click (and the code before calling the start runs perfectly) is there anything i may be missing?

my code:

[gleaming turtle]

tried this & no joy, same issue, i'll try the interpolation disable now

[bright arch]

this is the debug log after clicking twice

[teal viper]

your coroutine is named CameraClick, not cameraClick

[bright arch]

i have it defined as a variable named cameraClick above

[teal viper]

That's not how it works. You can assign the return value of StartCoroutine to that variable, but not pass it as a parameter.

[bright arch]

why does it work the first time then?

[teal viper]

I'd suggest checking the docs as well.

[teal viper]

Good question.

How are you assigning it?

[bright arch]

in the start function it assigns it like this

[gleaming turtle]

okay this worked, the spear now stays in place on the gameobject it's thrown at, getting some weird issues if i throw it at a box with a rigidbody where the spear wants to keep moving around after but i can have a crack at that

[verbal dome]

My guess is, the first time it runs and completes. The second time you start the same coroutine, it has already completed

[teal viper]

Ah, well that might just work. One time.
But anyways, that's not the correct way.

[verbal dome]

And does nothing

[gleaming turtle]

cheers @verbal dome :)

[bright arch]

ahh then how does one reuse the same coroutine within code?

[verbal dome]

No problem, btw FixedJoint also exists if you want to try an alternative for attaching a rigidbody to another, instead of parenting

In case you can't fix the current problems, that is

[bright arch]

ill change it to this i guess but it tells me its invoked using a string literal and i suppose they want me to change it for some reason

[teal viper]

There's another proper way. Read the whole docs page

[naive pawn]

...can lambdas be used for coroutines?

[verbal dome]

You mean passed into one?

[naive pawn]

i guess, yeah

wait no

[verbal dome]

Yeah it's pretty common to pass in a callback to be called when it finishes, for example

[teal viper]

It's not very clear from the docs it seems.
The most common way to start a coroutine is like that:

var coroutineInstance = StartCoroutine(YourCoroutine(parameters));

The asignment part is optional

[naive pawn]

StartCoroutine((() => {
  yield return null;
})());
```as an iife, of sorts

[verbal dome]

Nah that doesn't work

[naive pawn]

hm, why not

oh, no proper target type for the lambda, right

[heady mesa]

hey guys

how do i make a script, ( for a vr game ) which a game objects disappears after a couple of seconds after touching it, but then resets all objects that dissapeared once 9 people are eleminated?

[timber tide]

good practice to assign coroutines in case you need to terminate them without having to destroy the GameObject

[timber tide]

One step at a time, and on the topic of coroutines that's a good starting point if you need a timer

[gleaming turtle]

I've worked out what the current problem is & it's that the spear collider is inside of the other objects collider & when that object has a rigidbody, it goes crazy. i think all i need to do is disable collision with the parent once it's pierced the object

[gleaming turtle]

I've set it so that once the spear pierces the game object, it starts ignoring collisions between them until it's been unpierced. however, it's also ignoring collisions with walls & the floor.

        parentCollider = collision.transform.GetComponent<Collider>();
        Physics.IgnoreCollision(GetComponent<Collider>(), parentCollider, true);```
this is the code i've used to disable collisions between the two

Anyone know why it would be ignoring collisions with other gameobjects, that don't have a rigidbody, as well now?

[wintry quarry]

show the rest of the code

[wintry quarry]

,well one issue is you're setting the position of this rigidbody directly via the Transform

transform.position += spearDirection * spearPierceOffset;

that can cause all kinds of havoc

[gleaming turtle]

yeah i've been told that is wrong however that is only done once the rigidbody is set to kinematic & that code works exactly as it's meant to, the issue is with collisions after it's pierced

[crimson pike]

there a way to get a better view style on the folder? like windows detail view

[neat robin]

what's the best channel to ask questions about proper component settings for camera/tile stuff?

[wintry quarry]

Canvas stuff: #📲┃ui-ux

TIle stuff: #🖼️┃2d-tools

[neat robin]

word ty ty

[crimson pike]

found it, one-column layout

[verbal dome]

You can ctrl+scroll for that btw

[grand snow]

i yern for the day that the grid view stops truncating file names too soon

[crimson pike]

would be nice if you could get a combination of the one-column view in that panel

with the left side folder browser

[neat robin]

is that channel mostly just for the art side or the usage too?

[swift crag]

i hate how common this is

just overflow, dammit

do ANYTHING other than truncate the name like we're on a goddamn DOS computer

8.3 all the way

[grand snow]

I hate that i have to zoom all the way in or click to read the whole damn file name 😐
What idiot made it and felt this was acceptable

[swift crag]

Substance Painter is really bad about this

I leave Unity on that "list view" perpetually

[crimson pike]

can i use the property drawer to make each element use different background contrasts so they are more visibly separate?

or is that writing a full ass editor?

like alternating two different shades of grey would be fine

[verbal dome]

You can probably do that with a property drawer and a ReorderableList

#↕️┃editor-extensions btw

[verbal dome]

Seems like ReorderableList's drawElementBackgroundCallback is what you want

[crimson pike]

perfect! tx

[autumn osprey]

hey, so this is less of me having an issue with my current code, and more of me trying to understand an example provided. hope that's fine in this channel.

i'm currently trying to understand contact filters and how to use them. the main question i have currently is from this code snippet/example here: https://github.com/Unity-Technologies/PhysicsExamples2D/blob/d957391d0a2b70225ffdcaede90f40d679df5d1e/Assets/Scripts/SceneSpecific/Miscellaneous/SimpleGroundedController.cs#L17

he only references isGrounded twice, once during the declaration and once later in the code when checking if the character should be allowed to jump. How does isGrounded get updated past the initial declaration since it is never mentioned in OnCollisionEnter2D or any other update method? there is a high possibility i am not understanding what => does honestly.

(please let me know if i need to post the code in that link to a discord message, or if this isn't the right place for this question. thanks.)

[verbal dome]

This public bool IsGrounded => m_Rigidbody.IsTouching(ContactFilter);
is just a property, equivalent to writing

public bool IsGrounded
{
  get 
  {
    return m_Rigidbody.IsTouching(ContactFilter);
  }
}```

If you use => it's an "expression-bodied property"

How does isGrounded get updated past the initial declaration
If you aren't familiar with properties, they don't actually store a value like fields do

This particular property is calling RigidbBody.IsTouching every time it is accessed

[autumn osprey]

i am not at all familiar with properties and this is extremely helpful actually

so the check actually runs m_Rigidbody.IsTouching(ContactFilter) because it is accessed, right?

[naive pawn]

properties are methods disguised as fields

[verbal dome]

Yes, every time

[autumn osprey]

this makes complete sense now and i highly appreciate this. will need to look into how properties work more in depth in a bit, but i'm definitely on the right track now. thanks!

[hot laurel]

yeah properties are bad and misleading 🤐

edit:
alot of people expose empty properties (empty setter, empty getter method), in this case its misleading and usless/bad, it does nothing but it looks like method. Just use public field so nobody have to go to the implementation to check that it does nothing.

[naive pawn]

incredible reaction progression guys

[brittle maple]

!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.

[brittle maple]

I need to calculate in whic direction a character is moving, its using Transform (If im not wrong) to move, I tried using this code to calculate in which direction its moving, but that "totalPosition" isn't changing (its at 0, 0, 0) https://paste.ofcode.org/tLeh4r2aBFAApCLJf8un2x

[wintry quarry]

THose positions are going to be exactly the same

[naive pawn]

well firstPosition and secondPosition are gonna be the same value there

[wintry quarry]

also why did you make it so complicated with extra methods like that

[brittle maple]

I guess I just do that xD, Is there any way to make this work? With Transforms?

[naive pawn]

you need a time step in between

[wintry quarry]

What you want is probably this:

Vector3 previousPosition;

void Start() {
  previousPosition = transform.position;
}

void FixedUpdate() {
  Vector3 currentPosition = transform.position;

  // How much have we moved since the previous frame?
  Vector3 difference = currentPosition - previousPosition;

  // Velocity is distance / time
  Vector3 velocity = difference / Time.fixedDeltaTime;

  enemyAnim.SetFloat("moveX", velocity.x);
  enemyAnim.SetFloat("moveY", velocity.y);

  // Save our current position for next frame
  previousPosition = currentPosition;
}```

[naive pawn]

get the position, remember that, wait a bit for it to move, get the position again, find the difference

but yknow.. why not just have the thing controlling the movement, also report the direction?

also since this is animation stuff you might want to do this in Update? or is the target also moving in FixedUpdate for some reason

[naive pawn]

("frame" but it's in FixedUpdate)

[wintry quarry]

yes - physics frames

[brittle maple]

Im finishing a gamejam in 2 hours, I gotta make this work fast, its using a script/plugin that I didn't fully study so I dont have time to see how it all works, thanks!!

[naive pawn]

huh, ive never heard it called that

[wintry quarry]

Frame is a pretty generic term that can mean any sort of window of operations.

It's true most of the time "frame" is referring to a rendered frame in the engine loop.

It's just easier to write frame than "physics update step" or whatever

[naive pawn]

i usually call them "physics ticks"

[brittle maple]

https://paste.ofcode.org/XtB7jvS6YSaYWzVaxdLDUh It doesnt work, did I make some kind of mistake in pasting and adding it?

[wintry quarry]

why did you suddenly switch to Update

but uh - what doesn't work about it?

[brittle maple]

In the inspector the totalPosition is still 0, 0, 0

[wintry quarry]

If you're in update then:

Vector3 velocity = difference / Time.fixedDeltaTime;```
This should be `Time.deltaTime` instead

[naive pawn]

is the target moving with Update or FixedUpdate?

[wintry quarry]

because:

totalPosition = secondPosition - firstPosition;```

[brittle maple]

Sorry I changed it...

[wintry quarry]

you're subtracting two vectors that don't do anything

[brittle maple]

Thanks, im blind

[wintry quarry]

firstPosition and secondPosition are your old variables

You should use velocity.x and velocity.y

get rid of these:

    private Vector3 firstPosition;
    private Vector3 secondPosition;
    public Vector3 totalPosition;```

I would be inclined to put this all in LateUpdate as well assuming you are moving the object in Update

Or FixedUpdate if moving via physics

[brittle maple]

Im not sure, thanks, it works now!!!!

[winged seal]

how do i create a script?

[frosty hound]

Do the !learn tutorials.

[eternal falcon]

:teacher: Unity Learn ↗

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

[winged seal]

i asked bro

just tell me

aw

[gleaming turtle]

like that

[winged seal]

scriptable object

i have not used unity in 2 years

[short hazel]

Look at the screenshot

[winged seal]

i did

[short hazel]

Then you saw it too

[gleaming turtle]

if you need this much help with stuff like how to make a script, maybe you should in fact do the tutorials

[short hazel]

Indeed, the interface has changed a bit so some of the older knowledge isn't valid anymore

Official docs and tutorials are kept up to date though

[cosmic quail]

tbh they recently changed where the script creation button is, so even unity experts can be confused where it went

[echo ruin]

For me it still puts it at the top "Create C# Script"

[cosmic quail]

what version of unity are you on?

[gleaming turtle]

yeah i did notice that, when i loaded up unity for the first time in ages it took me a sec as well but bearing in mind i was a unity beginner before (like spent less than 12h in the engine), then took a 2y break, came back to it after 2y and found it, it was confusing but not THAT confusing yk

[echo ruin]

2022.3.38f1

[cosmic quail]

they changed it for unity 6

[echo ruin]

I see

[tacit crystal]

how should i make a computer in my game?

[wintry quarry]

The first step is to list out the requirements for what a "computer" is in your game.

Because without that, nobody knows.

[tacit crystal]

well i want a computer that you can go to and turn it on and on there have some apps, but i'm wondering if i should do it by just turning on the UI when you turn it on or some other way

[wintry quarry]

how to enable and disable the display seems like the least of your worries if you want it to have "apps"

[tacit crystal]

so i should just make UI in the right position of the monitor?

[signal pollen]

Hullo

I got a rudimentary thingy going. I want to ask for advice as to how to get the physics more... realistic? I currently just use a Vector3.foward * speed *timeDelta thingy when I probably want something more to do with the wheels and stuff?

[sick jay]

@trail heart its fun to see you in one of the courses im using

[naive pawn]

resize the game view to be vertical

or set a preset view size/dimension/ratio

you can also pull the game view out into a separate window

[slender nymph]

the shape of the scene view camera is entirely dependent on the resolution and aspect ratio set for the game view window

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

[trail heart]

Unity has the wheel collider component that you could look into

[signal pollen]

Oh neat

[obtuse pebble]

Hi, I am making a game with Little Alchemy mechanics. I have worked out the art assets and combinations, and I now have to implement it. However, I am wondering what the best way to store the data would be.
In my limited C# usage, I would do an if loop to check every single combination, but I am sure there is a more effective way to do it. Any suggestions?

For those who don't know, the game revolves around combining two elements and making a new one. And there can be a lot of elements made, so a good and efficient way to store and track the combinations would be useful

[grand snow]

Could get costly if you add many possible combos.
A good option could be to look into having a unique id that be constructed from the components.

then using say a dictionary it would make lookups quick

[obtuse pebble]

a dictionary? I'll look into that. thanks!

[grand snow]

Its a generic collection where a unique id key maps to some object: https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2?view=net-9.0

[sick jay]

The tutorial im following is using the new input system, but it looks like the editor has changed since then and I also want to try and add my own stuff. It wants me to add a using static Controls; in order to allow IPlayerActions to work properly, but VS wants me to use another one called UnityEngine.InputSystem.DefaultInputActions. it worked fine up until it wanted me to make an event that listens for movement, it doesnt like that its reading a vector2 value and wants it to be a bool. https://pastecode.io/s/swftznzb

[slender nymph]

your MoveEvent is an Action<bool> which means the event expects a bool parameter not a Vector2

[sick jay]

thank you

[sick jay]

Alright now im stuck. I know what I did was import the default controls which probably includes Onfire, OnLook, and OnMove, so its not actually using the input actions i made before. How do i set it to the correct input actions?

[slender nymph]

controls = new DefaultInputActions();
change this so it uses the type you created (assuming you're using the create c# class option for your input action map since this seems to be what the tutorial is doing)

[sick jay]

the Input Actions asset i made is called PlayerController, but it doesn't seem to show up anywhere in the script

[slender nymph]

look at the import settings for that and check what you made the c# class name for it

[sick jay]

I think I know what you're trying to ask me to do but I'm not sure how to get there

This is my first time using the input actions

[slender nymph]

click the asset, the inpsector will show the import settings. this is not an issue of not understanding input actions

[sick jay]

Oh the tutorial didn't mention having to generate a c# class for it

[slender nymph]

it should have if the tutorial is showing that you need to create an instance of the class. link the tutorial

[sick jay]

Its behind a paywall so I dont know if it will show up

https://www.gamedev.tv/dashboard/courses/22/426

I found it

[trail heart]

If you have specific course related questions, the forum and discord that were seen advertised earlier are useful because of the paywall
The lectures also have a comment section that often contain commonly asked questions

[sick jay]

thank you!

[signal pollen]

Thank you so much for telling me about the wheel collider

When I got it to work, and after tweaking a bunch of numbers, it was a real "Yippee!" moment

I am immensely grateful for the documentation but I wish I had like a "Oh man I need x thing to do y, but I don't know what the name of x is" thing

I guess the next best thing is to ask experts like you guys!

[timber tide]

zoom

[pure drift]

!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.

[tough trench]

anyone know how to fix this?

[rich adder]

remove VC package restart unity

If you use UVC then idk switch to git lol

[tough trench]

thanks

[signal pollen]

Just sharing for now. Question for later is how to make the item dropped off at the location pop up in a neat way. I am thinking, so as to avoid recursive stuff from occuring, I will make a copy of the crate pre-fab but with a different tag that isn't "collectibles" like the one found on the back of the truck

I am already thinking I will need to refactor the code, where the truck is storing information that it has 1 item already, so that it cannot pick up another

[abstract copper]

public class Bullet : MonoBehaviour
{
    [SerializeField] private BulletData BulletData;

    void Start()
    {
        Destroy(gameObject, 2f);
    }

    private void OnTriggerEnter2D(Collider2D collider)
    {
        if (collider.gameObject.CompareTag("Enemy"))
        {
            GameObject effect = Instantiate(BulletData.HitEffect, transform.position, Quaternion.identity);
            effect.transform.localScale = new Vector3(BulletData.EffectScale.x, BulletData.EffectScale.y, BulletData.EffectScale.z) * Random.Range(2f, 5f);

            collider.gameObject.TryGetComponent<Enemy>(out Enemy enemy);
            enemy.Damage(BulletData.Damage);

            Destroy(effect, 2f);
            Destroy(gameObject);
        }
    }
}

So I shot the enemy with a bullet that does 25 dmg twice and he died, but the enemy has a 100 health. What could be causing the duplicate damage?

[wintry quarry]

Start using Debug.Log and printing what's happening

[abstract copper]

Yeah but idk what to log in the bullet

[wintry quarry]

log when it detects an enemy and does damage

and how much health the enemy has

and how much damage it's doing

and which collider you hit

[abstract copper]

okay

logged the health but didnt the other stuff il try

[wintry quarry]

logged the health where and when

and what was the result of that

[abstract copper]

only when it spawned

it was as expected

[abstract copper]

the enemy

[signal pollen]

[wintry quarry]

Not a code question

But you need to fix your UV mapping and/or texture scaling

or consider using a Triplanar shader

Shader Graph has a Triplanar node

[abstract copper]

so it hit the collider extra 2 times

[wintry quarry]

Which collider? Does your enemy have multiple colliders?

[abstract copper]

it has 2, but only 1 has trigger enabled

[wintry quarry]

but is the bullet a trigger?

[abstract copper]

yes

[wintry quarry]

then it doesn't matter

it will run OnTriggerENter2D for each other collider it hits

whether thye're triggers or not

that's why I suggested logging which collider you're hitting

[abstract copper]

Didnt know that

How should i do it? i still wanna let the enemy collide with stuff

It works fine when i remove the other collider

[stuck field]

Just basing off this, make your on trigger a bit bigger than the other one so it detects the collision, then has the collision

[wintry quarry]

Use layer based collisions to ensure the proper colliders are only interacting with the proper colliders.

[abstract copper]

fixed it, i just made another gameobject with the collison collider without a layer and used layers instead of tags

thanks

[crisp olive]

anyone know how to make hexadecimal strings?

have this simple idea that once you break it down its not so simple, at least for a beginner

[wintry quarry]

From what?

An int?
A byte array?

[crisp olive]

my basic idea is i want to manipulate an objects color with hex color codes(bullets) and if the hex matches then enemies hex color it destroys it

instead of having 3 diffrent spawners and deleting them after cycling i wanna use one object and cycle hex codes if possible

[wintry quarry]

You want
https://docs.unity3d.com/6000.0/Documentation/ScriptReference/ColorUtility.html

[crisp olive]

Dudeeee thank you! this is perfect

making my first game super hyped!

[whole willow]

I'm starting to feel stupid... Why does the object with the Rigidbody attached not send the debug message on entering the other BoxCollider

[slender nymph]

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

[rich adder]

how are you moving it ?seems locked

[whole willow]

For debug purposes, it's just gonna rotate endlessly.

[rich adder]

you should not move a rigidbody with translate

& not in update either

[whole willow]

so what should I do instead?

[rich adder]

reference the rigidbody component and access its methods for moving, addforce or velocity

use fixedupdate

[whole willow]

but that messes with the predictable logic of the object... Now it's going all over the place

I don't really have the time for this either

[rich adder]

how would changing from translate to velocity at all make it "go all over the place"

show what you have

if you want OnCollision to work properly you shoud move it with the appropriate physics methods, you are using a phyiscs function

[whole willow]

using System.Collections.Generic;
using UnityEngine;

public class Cycle : MonoBehaviour
{
    [SerializeField] private SteeringWheel steeringWheel;
    [SerializeField] private float forwardSpeed = 10f;
    [SerializeField] private float turnSpeed = 5f;
    [SerializeField] private float deadZone = 5f;

    private Rigidbody rb;
    public bool DeadZoneActive { get; private set; }

    private void Awake()
    {
        rb = GetComponent<Rigidbody>();
        if (rb == null)
        {
            Debug.LogError("Rigidbody component is missing on this object.");
        }
        DeadZoneActive = true;
    }

    private void FixedUpdate()
    {
        if (rb == null)
            return;

        Vector3 forwardForce = transform.right * forwardSpeed;
        rb.AddForce(forwardForce, ForceMode.Force);

        // Rotate the motorcycle based on the steering angle
        if (steeringWheel != null)
        {
            float steeringAngle = steeringWheel.SteeringAngle;

            if (Mathf.Abs(steeringAngle) > deadZone)
            {
                DeadZoneActive = false;
                Quaternion targetRotation = Quaternion.Euler(0, -steeringAngle * turnSpeed, 0);
                Quaternion newRotation = Quaternion.Lerp(rb.rotation, rb.rotation * targetRotation, Time.fixedDeltaTime);
                rb.MoveRotation(newRotation);
            }
            else
            {
                DeadZoneActive = true;
            }
        }
    }

    private void OnCollisionStay(Collision collision)
    {
        Debug.Log("ouch");
    }
}
``` It no longer properly rotates and while the Debug message wasn't triggered, it just went flying

[rich adder]

what are the speeds in the inspector set to ? also which object are you trying to Collide with to have that OnCollisionStay

it goes flying probably because you have Accumulating speed with AddForce

if you want behavior similar to translate you can use .velocity or switch the ForceMode without mass / acceleration but you still need a velocity "speed limit" aka clamp

[whole willow]

I'm such a freaking idiot...

I muted the console.
Don't debug at 4 am, kids.

@rich adder thank you so much tho!

[rich adder]

*tired
but yeah

[ember talon]

Hi, is anybody here has experience working with Unity Timeline? I'm working on a feature by extending Unity's Timeline and found an issue on the scrubber;
when I jump the scrubber to previous time, it won't evaluate the PlayableAssets within the range of the scrubber's traversal. Is there a workaround for this?

[rich adder]

#🏃┃animation

[ember talon]

Alright, I'll move it there. Thanks for reminding

[crimson pike]

Im realizing so many problems in unity are just overlooking one of a dozen details that all go into making something work as expected

First order of business in debugging any problem that was working just a moment ago is reiterating over every setting you can think of.

Like this morning I went to demo this feature I made Th e night before that suddenly didn’t work, simple letterbox effect right? Well the parameters all looked fine and it took me an hour to realize the alpha value was just 0 so it wasn’t showing up

[wintry quarry]

Get a reference like any other component

[slender nymph]

note that creating an instance of your PlayerInput class generated by the input action asset is not creating an instance of that PlayerInput component, but rather a specific class meant to handle the input directly. having more than one instance of that is also perfectly fine as you can enable/disable specific action maps on it if you want. but also you can just pass the reference to the PlayerInput object

[wintry quarry]

yes that's wrong

[slender nymph]

nah, the youtube tutorial you followed just named the generated c# class the same as the existing component which made that more confusing

[wintry quarry]

wll good. chance you ccidetally named your actions asset that and you're thinking of the generated class

which is stupid

but common

yeah you're confusing the actual PlayerInput component with your generated class

no

that's your asset

name it something else

so you get less confused

because you are confused right now

the fact you are usng the compoonent and the generated class is wrong

you need to pick one or the other

[nimble apex]

lol i just found out

InputField.textcomponent.text```
 and 
```cs
InputField.text```might be different

somehow they will add a zero whitespace there

[north kiln]

Yes, the child TextMeshProUGUI uses a zero-width space for layout purposes, and should not be referenced.

(https://unity.huh.how/parsing)

[wintry quarry]

Again it's because you named your asset "PlayerInput"

so you have a generated C# class with that name too

which is causing you confusion

you should rename the asset, and delete the old generated C# class if it exists

which it clearly still does

The error is clearly saying you have a script called PlayerInput that doesn't derive from MonoBehaviour

Go to this code

right click the word "PlayerInput"

and "jump to definition" or whatever

The error is clear that it still exists

yes right click this word

the capital one

go to that definition

that would be a totally different error

You deleted it but did you uncheck the checkbox on the asset? Because it will re-generate it if you didn't

I still recommend renaming the asset as well to avoid further confusion

Yeah because that code is not valid

You are trying to use the PlayerInput component now as if it were the generated class

It isn't. It's not going to have those properties with the names of your action map etc.

Huh?

Why would you need to? You are doing something weird if you're asking that question

yeah you can't do this

Invoke unity events is when you set up listeners in the inspector for the component

you don't set up listeners in your code.

You set them up like this

absolutely no

You still get a CallbackContext parameter with Unity Events

you just check in the code

e.g.

if (context.performed) // whatever```

That's what I just said

WHy?

Why do you need it?

What are you talking about

what isn't working

you don't need this code at all

[wintry quarry]

you set the listeners up like this

but agian

if you're getting that error it means you still have another class called PlayerInput you defined somewhere

most likely the generated one

unless you mean these

Yeah that code has to be deleted

like I said it's not valid anymore

[wintry quarry]

You would now set up your listeners like this

Then you shouldn't be using the PlayerInput component

you said you prefered the component before

It's possible to still have the component but it's pointless

you don't need it but it's the most convenient way.

You should really rename it

because that's very confusing

that will create different instances

It's a C# object like any other. You can share a reference to it as you need to.

I recommend making a single component that manages a single instance of it

and share that amongst all the scripts that use it

that way if you do:

• runtime rebinding
• runtime enabling/disabling of action maps

It all works globally

sure

Make a component like I described, and make it a singleton

Basic example:

public class InputHolder : MonoBehaviour {
  public static InputHolder Instance { get; private set; }

  public MyInputAsset Input { get; private set; }

  void Awake() {
    Instance = this;
    Input = new();
  }
}```

Not sure what you mean by "include it as a Component"

but you can access this via the Instance property from anywhere

Not in Awake

In Start or Update

[charred spoke]

Yes

[burnt vapor]

If you worry about availability then you should just make a general provider that provides your singletons rather than have them create themselves. Then it would not matter who grabs it first.

There are cases where an instance requires a singletons in its awake state for initialization, so then you would still have an issue

[copper crest]

Can someone tell me how do i make a button that triggers another animation on the UI

[rich adder]

a physical world button? UI? a 3d? 2d ? you have to be more descriptive. Buttons are vague in unity

[copper crest]

Oh i got it

[dapper yarrow]

Anyone know how to attach audio souce to a prefab and player properly? I am able to attach it but whenever the script tried to play it, error "Can not play a disabled audio source" would occur...

[rich adder]

sounds like the gameobject itself is disabled

[dapper yarrow]

but I am not sure why it is disabled. I am using another script to spawn coin (the prefab). I attached a script to the coin to trigger when player collide with it, which play the sfx, and disable the object

public class SFXManager : MonoBehaviour
{
    // Start is called before the first frame update
    [SerializeField] private AudioSource coinSFX;
    void Start()
    {
        if (coinSFX == null)
        {
            coinSFX = GetComponent<AudioSource>();
        }
    }
    void OnTriggerEnter (Collider other) {
        coinSFX.Play();
        this.gameObject.SetActive(false);
    }
}

but even if I remove the setactive command, the same error would still occur

[rich adder]

show the prefab you are trying to spawn

[rich adder]

Debug.log before the play, see what is going on

[dapper yarrow]

okie! Just a sec. Thanks for helping btw!

[rich adder]

Debug.Log($"{name} is active {gameObject.activeSelf} and coinSFX state : { coinSFX.enabled} to play")

[dapper yarrow]

weird🤔

[rich adder]

are you sure this object is not getting destroyed or disabled in the same frame?

[dapper yarrow]

let me try removing the disable command

[rich adder]

you might be better off playing the sound from elsewhere if you don't need spatial 3d sound

[dapper yarrow]

do you have any recommendation? I am kinda new to Unity so I am not sure how should I do that. Should I like create a empty game object and put a scipt there?

[rich adder]

Singleton usually so you can just call for example

SoundManager.Instance.PlaySound(someSoundtoPlay)

//Sound manager script
public void PlaySound(AudioClip clip){ audioSource.PlayOneShot(clip);

https://gamedevbeginner.com/singletons-in-unity-the-right-way/#why_use_singletons

[dapper yarrow]

Thanks!! Much appreciate for the beginner article!

[tough plinth]

Hello everyone!
So I'm trying to make a code that changes Camera view (from 3rd to 1st person view) and I'm a bit confused with my script:

https://hastebin.skyra.pw/zagihoyoqa.csharp

It works well until I add another If statement. Logically it should work but for some reason it's not.

Any thoughts?

[visual linden]

Hey :)
You need to return (return;) within the first if block, otherwise backCamEnabled will be set to false first, and then back to true right after in the next if statement.

Alternatively, you can use Else in place of the second block

To ensure only one of them gets executed

[tough plinth]

Oh, never thought the problem could be in return;
Previous language didn't require that D:

Oh, it works now, thanks!

[visual linden]

Returning just ensures that the code doesn't continue. In your case you only want to evaluate one of the two if blocks