💻┃code-beginner

[umbral bough]

what is going on 😭

[teal viper]

So many possibilities. Gotta check them all.

Is it being frustum culled maybe..? Gotta check thoroughly.

[umbral bough]

what does that mean

[teal viper]

When render bounds of renderers go outside the camera frustum(outside the camera view), they are culled.

[umbral bough]

ok, that seems like the most likely scenario

why doesn't it get refreshed when my object re-enters the view?

[teal viper]

Sometimes render bounds don't actually aligns with visuals which would result in the object being culled. I'm not sure what renderer you use and how it's bounding box is generated though.

We do t even know if that's the case at all.

[steel herald]

can someone help me with animations :s please

[umbral bough]

it would prob explain the object not disappearing when it's visible in the scene view :/

also, I am using urp

[teal viper]

#🏃┃animation

[umbral bough]

and cinemachine if that makes a diff

[teal viper]

Doesn't really matter, but it might explain indeed.

[umbral bough]

I see, friend suggested that I have another camera that's positioned on the ground level at all times, would this even help if the camera output is not visible and how badly would this impact the mobile performance?

[teal viper]

You could try logging something in OnBecameInvisible.
https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnBecameInvisible.html
If it logs when the issue occurs, then it's indeed being culled.

[teal viper]

Wdym?

What's the point of another camera if nothing is visible in it?

[umbral bough]

well it would be visible but the camera's output wouldn't be rendered

that's why I was wondering if it would work in the first place

also

it does indeed become invisible

[teal viper]

What's the point in the camera if it doesn't render anything?

[teal viper]

Yeah, so you should research why your renderer is getting culled. Was that sprite renderer?

[umbral bough]

to prevent the object from disappearing

[teal viper]

Wat?

[umbral bough]

it is a sprite renderer, I am using a closed sprite to generate the terrain

[umbral bough]

well it becomes invisible because it's getting culled, we were wondering if it being displaying on the other camera(that's not visible on the player's screen) would resolve the issue

a really bad solution but just an idea

[teal viper]

Why not just make it visible in the current camera..?

[umbral bough]

that would affect what the player is seeing which is not what we want

[solid verge]

how to make a text unvisible

[umbral bough]

how did you make it invisible in the first place

[solid verge]

did i say it was invisible?

[teal viper]

What do you mean? There's more and more info that you never explained and doesn't make sense in the context of the issue.

[solid verge]

i was talking about making it visible in a script

so that if a player has no grapes

grapes are not shown

[umbral bough]

Ignore that one, a friend just suggested that I add another camera to the scene that would always be on the ground level and wouldn't be displayed to the player.
I was just wondering if that would even solve the issue if it's not being displayed.
It is a bad solution either way and just ignore it ig.

[silent valley]

Whenever I collide with the Oxygen pickup. I get an error on line 49 which is oxygenController.UncreaseOxygen(increaseamount);

[teal viper]

Is the player not supposed to see the terrain?

[silent valley]

This is my IncreaseOxygen method in my oxygen controller

[umbral bough]

if it goes too high then no

shown in the vid I sent before, can link it again if you'd like

[umbral bough]

do you mean invisible?

[solid verge]

no

i mean't making it visible

[teal viper]

Then who is supposed to see it when the player is too high?

[solid verge]

cause i want it to be invisible by deafult

[umbral bough]

I mean one option would definitely be enabling the object through the script

[rich adder]

always use TryGetComponent
eg

if(other.gameObject.TryGetComponent(out Oxygen oxygen)){
oxygen.IncreaseOxygen(icreaseAmount);
Destroy(gameObject); }```

[solid verge]

cause the player starts with 0 grapes

[solid verge]

how

[umbral bough]

you need a reference to it and then just call the _yourObject.SetActive(true/false);

[solid verge]

but it's a text

so it won't work

[umbral bough]

it's still an object

[solid verge]

well i tried it

it doesn't work sadly

[umbral bough]

select it in your scene, does it have a checkmark in the inspector(top left)?

[umbral bough]

are you getting any errors?

[solid verge]

yes it does

no

[umbral bough]

then it can be enabled/disabled

[umbral bough]

ok, would you mind showing me the piece of code you are using to toggle it and show me how you got a reference to your text?

[umbral bough]

nobody

[umbral bough]

my advice is maybe invert that if statement for cleaner code but just a preference:

if(!other.gameObject.TryGetComponent(out var oxygen)) return;
oxygen.IncreaseOxygen(icreaseAmount);
Destroy(gameObject);

[umbral bough]

the recommendation to use the TryGetComponent is good, what worries me is that you are making sure it's the player that you are getting the component from and it somehow doesn't have Oxygen component attached to it

are you sure you set everything up properly in the (possibly)prefab's inspector?

[silent valley]

oh my.... Yep. you are right

[umbral bough]

happens

[silent valley]

Rip to me. Thank you. The oxygen has nothing to do with the player. Will fix that now. THANK YOU

fixed

no joke. 12ish hours spent pulling my hair out. Need myself a Duck to talk to

[umbral bough]

wish I could say it never happened to me 😭

[silent valley]

It sucks. Because I have way more complex things working and this is a rookie error 😅 Thank you though

[solid verge]

but i want to do that with a script

[umbral bough]

we will do that with a script

[solid verge]

can you tell me how?

[rich adder]

btw this would not work with var without specifying a type

[umbral bough]

sure, we'll do that now

[solid verge]

ok

[umbral bough]

are you sure?

oh I see

[rich adder]

yes how the compiler know what type oxygen is

when using var you would use the <T>

[umbral bough]

you are using the TryGetComponent() not TryGetComponent<>(), my bad

I didn't even notice, my bad

[rich adder]

i just feel like its too verbose so I put it in the out param

[silent valley]

I'm not using var now. I just copied it from my healthscript out of frustration

[umbral bough]

it is cleaner that way, less text ig

[novel shoal]

i used fixedupdate to make the speed of a ball constant, but now if i want it to bounce it doesn’t

[umbral bough]

Would you mind sending us your code?
I am assuming that you are setting your ball's vel instead of adding to it.

[umbral bough]

ok, would you mind showing me how u get a ref to your text aswell as the code that is supposed to disable/enable it?

[solid verge]

i found le answer

[rich adder]

You should only assign velocity when you start and when you collide

no reason to be in fixedupdate

[novel shoal]

https://paste.ofcode.org/hy538gZmf5amAcNRHukeKK

[umbral bough]

he said he wants his ball speed to be constant

[rich adder]

yes I know that

[novel shoal]

it has to be constant but to be +1 every time it bounces

[novel shoal]

every time it bounces against the player*

[rich adder]

thats why you would normalize the speed and then add it to a variable

[umbral bough]

I am positive that you can remove the * Time.deltaTime and erase the ForceMode2D.Impulse

it should do the same thing

talking about start

[novel shoal]

but if it's not in fixedupdate it's not a constant

[umbral bough]

and yeah

[rich adder]

not true

dont use AddForce

[novel shoal]

chatgpt told me to use ForceMode2D. impulse lol

[umbral bough]

it isn't incorrect, just saying

[rich adder]

chat GPT is a dumb spam bot

[novel shoal]

and isn't time.deltatime use to make the speed not dependent on the fps?

[rich adder]

rigidbody already have a fixed timestep

[umbral bough]

ForceMode2D.Force is the default, it already does that

[novel shoal]

oh ok

[umbral bough]

you would use Impulse if you wanted to add an instant force such as explosion for example

if you want to add a continuous force such as gravity then Force is better

[novel shoal]

so if i remove FixedUpdate it should be correct

[rich adder]

I wouldn't use AddForce in pong like game

just use .velocity if you want equal speed until increase

[novel shoal]

wait

am i not using it already?

addforce is used only at void start

[rich adder]

we said yesteday to remove it

you still have it for some reason

[umbral bough]

I usually don't use the FixedUpdate but it's far from wrong.
Unity doesn't update phyisics more often than the FixedUpdate happens so it's technically more performant.
Does it make a difference in a real world scenario?
Unlikely and just complicates the code imho.

[novel shoal]

i didn't see it

and what should i place at its place?

[rich adder]

.velocity for an iniital move

is this what you're trying to make?

[novel shoal]

yup

[rich adder]

yeah so use .velocity its best imo

[umbral bough]

you should prob store the velocity in a global variable(which is what n.n recommended earlier iirc)

[rich adder]

here is how I do it, yours can be diff

private void Awake()
    {
        startPos = transform.position;
        ResetBall();
    }

    public void ResetBall()
    {
        rb.MovePosition(startPos);
        rb.velocity = Vector3.zero;
        transform.Rotate(0, 0, Random.Range(-180f, 180f));
        moveDir = transform.right * moveSpeed;
        rb.velocity = moveDir;
    }```

[umbral bough]

well not the velocity but direction

[novel shoal]

https://paste.ofcode.org/C7c3uVFkA3XqxMSBU2WZ3e

[rich adder]

no

why is this here

 void Update()
    {

        rb.velocity = velocity;
    }```

also if you wanna keep adding speed you need a multiplier for moveSped

[novel shoal]

how do update velocity?

[rich adder]

look at my example from my project

[novel shoal]

ok

[rich adder]

when you collide

use Vector3.Reflect

[novel shoal]

vector2 in my case?

[rich adder]

sure you can use either one

all vector3 functions work fine

[novel shoal]

what does the method "reflect" do?

[rich adder]

unity just 0s out the z

[rich adder]

it "reflects" the direction incoming towards another direction

[novel shoal]

okk

[rich adder]

in this case it would make sense the normal (face direction) of the collider

eg the paddle or wall

[novel shoal]

so it makes the ball bounce?

[rich adder]

yes

https://docs.unity3d.com/ScriptReference/Vector3.Reflect.html

[novel shoal]

what's "movespeed"

[rich adder]

a float

[novel shoal]

the starting speed?

[rich adder]

yes and if you want to increase speed on hits

you just ++ it

or += amount

[novel shoal]

basically

[rich adder]

make sure to normalize the speed reflected first, so you can assign it another new speed

[full imp]

I realised that when I rotate the child object, the position changes
https://gyazo.com/113f12bc7b117d4cd2bd63c21778f214.gif
Is there some sort of formula that I have to apply to change the position when I'm rotating the child object?

[novel shoal]

on CollisionEnter(collider other)
if (other.CompareTag("player")
movespeed++

[rich adder]

is your game 2d you need OnCollisionEnter2D

yeah but you still need to reflect

[novel shoal]

oh right

[rich adder]

inside that

[novel shoal]

i need a separate script

[rich adder]

no

[novel shoal]

oh i thought i needed to add the script to the objects, not to the ball, my bad

[rich adder]

nah only ball needs script

since it keeps track of its own direction

[novel shoal]

can i use the position for the reset in the void start()?

[rich adder]

as long as it runs ones. My ResetBall method runs everytime a goal trigger is hit

my goal trigger detects if ball entered trigger

[novel shoal]

but i can store the position into a variable

[rich adder]

it calls ResetBall

[rich adder]

initial position is only there for resetting the ball to where it was when point was scored

[novel shoal]

okk

https://stackoverflow.com/questions/41129573/unity-how-to-use-vector2-reflect

i found this

but what's the red arrow?

[rich adder]

its the normal

[novel shoal]

and how do i calculate it?

[rich adder]

You get it from the collider in the collision parameter

[rich adder]

the collision gives you Contacts

to where exactly the ball hit

https://docs.unity3d.com/ScriptReference/Collision2D.GetContact.html

[solemn fractal]

Hey guys, If I am using other.CompareTag() to see if something hit the enemy in OnTriggerEnter2D on my Bullet script. I want to make that when the player gets a special hability now his bullet will hit one enemy and bounce to the enemy closer to that enemy. But all enemies use the same tag. Is that achievable? Would I just need to get the distance from the enemy hit to the closer one and redirect the bullet there?

[steel forge]

I have two scripts, on that brings the player back to the beginning if he runs into a spike and one that makes him move. My problem is, that while the player is moving, he can't die, because the movement is occupied by the movement script. Can i somehow disable a script temporarily or make like a global boolean that gets set to true when he should be dead?

[wintry quarry]

wdym by "the closer enemy"? You mean the enemy closest to the first enemy?

[wintry quarry]

you can disable scripts easily, yes, with refToTheScript.enabled = false;

[solemn fractal]

Player shoot the bullet. Bullet hit the enemy now the bullet needs to fly to the closest enemy to the first enemy hit

[wintry quarry]

You can also have the movement script check something like if (isAlive) Move();

[wintry quarry]

do an OverlapSphere or something, find all nearby emnemies, then just loop through and select the closest one

[steel forge]

Good, But I haven't figuered out how to refernce the script of a parent correctly. I've seen something about parent. but I couldn't get it to work.

[novel shoal]

void OnTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("player"))
velocity += Vector2.one;
Vector2.Reflect(rb.velocity, Collision2D.GetContact());
}
which is the argument of collision2D.GetContact()?

[solemn fractal]

You mean this? https://docs.unity3d.com/ScriptReference/Physics.OverlapSphere.html

[rich adder]

well its an array. and you only need 1 contact

so how do we get 1 item out of an array?

[novel shoal]

array[index]

[rich adder]

yes

GetContact returns items from an array, you need index.
well its a custom struct but thats out of the scope

[novel shoal]

why is it an array?

[rich adder]

because you can collide with multiple points

on collision

[novel shoal]

oh ok

[rich adder]

but you're reflecting it right away

so you only need the first

[dry tendon]

hey, does someone knows why my mobilephone starts to get slow with this simple scene without code or anything else appart from the buildings and the fog?

[gaunt ice]

actually, for nearest neighbor search overlapXX may fail, the only way is to loop through all colliders or considering using space partitioning to speed up

[wintry quarry]

yes

[rich adder]

Profile it

also not really code question

[wintry quarry]

sure but in most gameplay scenarios you only want to be considering nearby objects anyway - i.e. this chain effect probably has a maximum range

[dry tendon]

Whats that? I have to say that there are no shadows, so it is no really calculating nothing...

[rich adder]

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

more resources on How, links at the bottom of page

[dry tendon]

That is going to help me fixe the problem or is just gonna say me what's maybe happening?

[rich adder]

both

not maybe though

its accurate

[dry tendon]

it's for android too?

[rich adder]

btw if it starts getting progressively slower as you go chances are you keep spawning new pieces or something, and creating a lot of extra resoures

Ideally you would pool those spawned sections and recycle them as you pass

[dry tendon]

no, currently is just a scene that doesn't do nothing yet... i have not programmed anything

[rich adder]

oh well something to keep in mind then if you plan on doing infinite type runner thing

you should still profile it and see whats using most resources

[dry tendon]

exactly, that was my idea, then i'll do some type of object pooling

But thanks for the advice

[steel forge]

How do I reference the Script of a parent? The only thing I found is from 2019 and it didn't work and just referencing the component per public Component Moving; didn't work either.

[novel shoal]

void OnTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("player"))
rb.velocity += Vector2.one;

    rb.velocity=Vector2.Reflect(rb.velocity, other.transform.position - transform.position);
}

what's the issue with this now

😭

[rich adder]

dang.. I gotta run for a bit so Ill just spoon feed you my Collision real quick, ill be back in a few to explain it

private void OnCollisionEnter(Collision collision)
    {
        var newDir = Vector3.Reflect(moveDir, collision.GetContact(0).normal).normalized;
        moveDir = newDir;
        if(collision.collider.TryGetComponent(out PaddleMove _))
        {
            moveSpeed++;
        }
        moveDir *= moveSpeed;
        rb.velocity = moveDir;
    }```

[gaunt ice]

other.tf.position-tf.position is not the normal of the surface

[rich adder]

wdym "Didn't work". also don't use Component type, use the actual type of script not unity class

[ornate swift]

Okay so I have made a walk script but my character suddenly goes on his side when I start walking

[ornate swift]

this is before I have pressed any input from the script

[wintry quarry]

if you wish to constrain the rotation of your object - feel free to do so on the Rigidbody

[ornate swift]

and this is after

[nimble apex]

private <ClassName> className;

void Awake(){
      className = GetComponentInParent<ClassName>();
}```

[ornate swift]

it snaps on his side

I'll send a video

[rich adder]

I mean you could just do GetComponentInParent<Class> 🤔

thats only if 1 script on the parent ofc

or it grabs the first one 😛

[gaunt ice]

why not just assign it manually

[rich adder]

[SerializeField] private MyClass ayo;

[ornate swift]

I tried that but it didn't fix it

[nimble apex]

to prevent not assigning error lol

[rich adder]

thats a good error tho

so you know you've assigned it

[steel forge]

 private void OnTriggerEnter(Collider other)
    {
        Debug.Log("Stufe 1");
        if (other.gameObject.CompareTag("Death"))
        {
            Debug.Log("Stufe 2");
            
            gameObject.transform.parent.GetComponent<movement>().enabled = false;
            
            gameObject.transform.parent.position = Startposition;
            
            gameObject.transform.parent.GetComponent<movement>().enabled = true;
            
        }
    }```
Why doesn't this move my character to the defined "Startposition"?

[wintry quarry]

Show what you tried

[ornate swift]

this is the script

[wintry quarry]

Again, show what you tried

As far as I can tell, you have not constrained your object's rotation in the Rigidbody inspector

[ornate swift]

Thats what I tried

[wintry quarry]

oh yeah your RotateCharacter code is completely wrong

you are messing with quaternion x and y components 😱

you should NEVER be doing that

[wintry quarry]

That's also a problem ^

[wintry quarry]

!code for sharing code btw

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/, https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code

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

[wintry quarry]

what you need to do is:

moveDirection = Vector3.ProjectOnPlane(moveDirection, Vector3.up).normalized;
``` _before_ you feed it into the MoveCharacter and RotateCharacter functions

you also need to delete the lines:
targetRotation.x = 0; and the z one, they are completely incorrect.

then it will work well

(although you should also check that moveDirection != Vector3.zero before calling RotateCharacter)

[steel forge]

btw, where and how exactly should I paste this? Bc I get errors if I paste it outside the public class and inside the public class.

[nimble apex]

u dont paste stuff directly

that is just a draft

[eager elm]

you need to remove the '<>' from the first ClassName, but not the second

[wintry quarry]

just referencing the component per public Component Moving; didn't work either.
Nonsense, of course it works

You wouldn't use Component though, you'd use the specific type you want

[nimble apex]

for example, if the script name is RandomScript

private RandomScript randomScript;

void Awake(){
      randomScript = GetComponentInParent<RandomScript>();
}```

[wintry quarry]

you mean randomScript =

[nimble apex]

a script may contain multiple classes

ur not referring to the script file

but the class inside

[steel forge]

It would be a bit clearer if you were consistent with "<>"(where it should be kept and where it shouldn't). But thx for the help.

[wintry quarry]

You're actually referring to a specific instance of the class

A "class" in C# is like a blueprint for objects. There can and usually are many objects of a given class in existence at runtime or edit time

[ornate swift]

thanks for the advice!

[ornate swift]

Cool

[novel shoal]

what's wrong with mine?

[dry tendon]

@rich adder, i ran the profiler and i get this... but i don't know how could this optimyze my code... Could you guide me a bit?

[amber nimbus]

Hello, I have this code for rotating a tank turret towards where the player is looking. This works great as long as the root of the turret is on flat ground. However if the tank tilts the rotation is not linear anymore and it slows down before reaching the target rotation. I cant figure out how to fix this at all :/

[swift crag]

that'll be because it's trying to rotate directly towards the player

but you're ignoring the X and Z euler angles

[rich adder]

look at compare ?

[swift crag]

i would suggest not messing with euler angles at all here

instead, you should project the player's position into the XZ plane of the turret, so that you aren't trying to look up or down at all

[rich adder]

there are plenty of tutorials on how to use it properly, I dont have time to sit here and explain every detail. You should start by putting it in hierarchy view instead of timeline

[swift crag]

Vector3 targetPos = target.position;
targetPos = Vector3.ProjectOnPlane(targetPos, transform.up);

[umbral bough]

Hi, I have an object that disappears when the player's view goes out of range.
The issue is that it doesn't reappear on time when the player reaches it and the players goes through it instead of colliding with it.
I can't figure out how to disable frustum culling for that object, please help.
This is one thing that I found on it but it doesn't seem to work:
_rend.allowOcclusionWhenDynamic = false;

[swift crag]

If the turret is on level ground, this will throw out the Y component

[swift crag]

this isn't quite right, though. I think you'd want to do target.position - transform.position, then project it

That will give you a look rotation that just spins around your Y Axis, without tilting up or down

then you can simply rotate towards it

[ornate swift]

I did that but it still doesn't work, do you know what is wrong with this script?

!code using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
public float moveSpeed = 5f; // Adjust this value to control the movement speed
private Rigidbody rb;

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

void Update()
{
    // Get the input for movement
    float horizontalInput = Input.GetAxis("Horizontal");
    float verticalInput = Input.GetAxis("Vertical");

    
    // Calculate the movement direction based on the camera's forward and right vectors
    Vector3 moveDirection = (Camera.main.transform.forward * verticalInput + Camera.main.transform.right * horizontalInput).normalized;

    // Apply movement to the character
    MoveCharacter(moveDirection);
    // Rotate the character to face the movement direction without tilting
    RotateCharacter(moveDirection);
    moveDirection = Vector3.ProjectOnPlane(moveDirection, Vector3.up).normalized;
}

void MoveCharacter(Vector3 moveDirection)
{
    moveDirection = Vector3.ProjectOnPlane(moveDirection, Vector3.up).normalized;
    // Apply the movement to the rigidbody
    rb.velocity = new Vector3(moveDirection.x * moveSpeed, rb.velocity.y, moveDirection.z * moveSpeed);
}

void RotateCharacter(Vector3 moveDirection)
{
    moveDirection = Vector3.ProjectOnPlane(moveDirection, Vector3.up).normalized;
    // Rotate the character to face the movement direction without tilting
    if (moveDirection != Vector3.zero)
    {
        // Calculate the target rotation only around the Y-axis
        Quaternion targetRotation = Quaternion.LookRotation(moveDirection, Vector3.up);


        // Smoothly rotate the character towards the target rotation
        transform.rotation = Quaternion.RotateTowards(transform.rotation, targetRotation, Time.deltaTime * 1000f);
    }
}

}

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/, https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code

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

[steel forge]

private void OnTriggerEnter(Collider other)
    {
        Debug.Log("HI");
        if (other.gameObject.CompareTag("Player"))
        {
            Player.transform.SetParent(other);
        }
    }```
This should reference the thing I collide with and then set as "Players" Parent, but I get an error that ```Argument 1: cannot convert from 'UnityEngine.Collider' to 'UnityEngine.Transform'```. I just want the Player to tick  a moving Platform...
How can i best achieve that?

[amber nimbus]

Thanks I will try this

[novel shoal]

it says that collider 2d has not a component "getcontact"

[forest locust]

im having an issue with an on click. Im following a tutorial and havent missed a step. void Restart()
I set up the restart but the function WONT ACKNOWLEDGE RESTART. Its supposed to say Restart() under cancelinvoke()

[swift crag]

Vector3 lookDir = target.position - transform.position;
lookDir = Vector3.ProjectOnPlane(lookDir, transform.up);
Quaternion goalRot = Quaternion.LookRotation(lookDir, transform.up);

[rich adder]

because you can't use triggers to get contact
GetContact comes from Collision / Collision2D

[swift crag]

I'm not confident on this yet, though. I'd need to go implement it to make sure I'm doing this right.

actually, i'm gonna go do that now :p

[rich adder]

why are your walls / paddle triggers 🤔 @novel shoal

[novel shoal]

what do you mean?

[rich adder]

make it public

[amber nimbus]

If I understand Vector3.ProjectOnPlane() maybe transform.root.up instead of transform.up could be better?

[swift crag]

The second argument should be the direction you want to ignore

[amber nimbus]

oh ok

[swift crag]

transform.root would be whatever transform is your greatest grandparent

[forest locust]

THANK YOU!!!!

[rich adder]

why are you using OnTriggerEnter2D instead of OnCollisionEnter2D

[swift crag]

oh hey, nice: 2022.3.13f1 has an up-to-date Visual Studio Editor package

[eager elm]

other is a Collider, SetParent needs a transform, so use other.transform

[novel shoal]

idk even the difference 😭

maybe i should watch more tutorials

[steel forge]

thx

[dry tendon]

I understand it 😁

[safe root]

I'm trying to get my script to read the path points I have layed out but I keep getting this error and I don't know why

[polar acorn]

grid is null

[novel shoal]

okkk

[safe root]

I know but how do not have it null?

[polar acorn]

Is there an object of type Grid in the scene?

[ornate swift]

@wintry quarry do you know what is wrong with this? Because I have no clue

[novel shoal]

with collisionenter it says i cannot use comparetag

[safe root]

Yes

[rich adder]

you can but you have to grab the collider/gameObject first

[polar acorn]

Try logging it after you find it and see

[safe root]

What do you mean?

[rich adder]

https://docs.unity3d.com/ScriptReference/Collision2D.html

[gaunt ice]

assign the Grid to a class field instead of find it in run-time

[polar acorn]

Log the grid you found. See what it is

[safe root]

Like debug log?

[gaunt ice]

you can simply solve it by this

[polar acorn]

yes

[novel shoal]

{
if (gameObject.CompareTag("player"))
rb.velocity += Vector2.one;

rb.velocity = Vector2.Reflect(rb.velocity, collision.GetContact(0).normal);

}
is this right @rich adder

[wintry quarry]

Share the code properly and explain your issue better than "what's wrong with this"
!code

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/, https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code

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

[rich adder]

no, look at my code and compare

also tag check is wrong..

Collision2D parameter holds the object you hit..

[safe root]

I already know which line is casuing the issue

[ornate swift]

Alright, sorry. My problem is that when I move around the character snaps to a sideways position, but I don't know why. I'd like to solve it.

[novel shoal]

you are making that not rb.velocity, but the direction

[polar acorn]

Well, yes, the error tells you

[summer stump]

This checks the tag of the object attached to the script, not the other object

[polar acorn]

You said there's an object of type Grid in the scene. Log it

See what object it is

[rich adder]

Im literally just storing it a vector3 so its easier to change but its the same as doing rb.velocity = value

[novel shoal]

so collider.comparetag?

[summer stump]

And that's the right thing to do

[summer stump]

No

collision.gameObject.CompareTag
Or
collision.collider.CompareTag

You need to go through the collision struct

[safe root]

Oh, do I do Debug.Log(gameObject.Grid)?

[polar acorn]

log the grid object you find

[safe root]

I asking to see if that was right

[umbral bough]

bump

[novel shoal]

but aren't moveDir and rb.velocity the same thing?

[polar acorn]

Does GameObject have a variable of type Grid

[summer stump]

No.
moveDir is a variable you apply TO rb.velocity
That way if you want you can reference the moveDir outside of that method

[safe root]

It should since Grid is a object in the game

[novel shoal]

but here rb. velocity = moveDir

[summer stump]

"Apply to rb.velocity"

Yeah, he applies it to it.
You CAN skip that step if you want

[novel shoal]

yoo @summer stump ;))

[polar acorn]

https://docs.unity3d.com/ScriptReference/GameObject.html
Is there a variable called .Grid on this class

[rich adder]

right ? so im just storing it in a variable lol

Vector2

[amber nimbus]

You are amazing, it works thanks so much i spent like 2 weeks on this I love you maaan

[swift crag]

oh, nice; I was just fighting with getting the gun to elevate properly as well :p

getting the turret to rotate worked on the first try

[safe root]

No?

[polar acorn]

Okay, so what did you expect gameObject.Grid to get

[safe root]

Sorry, I was looking at the Debug scriptrefernce and seen this so I though it would work \

[polar acorn]

That will get you the .name property of this game object

[novel shoal]

okk

[safe root]

I understand now but then how should I do that

[nimble apex]

gameObject.<component>

transform is made intrinsic with gameobject because its used very frequently

gameObject.name / .tag also working

[swift crag]

yes, any property of a GameObject can be used, by definition

i'm not sure what you're saying here

[polar acorn]

Just log grid

[novel shoal]

{
if (collision.gameObject.CompareTag("Player"))
rb.velocity += Vector2.one;

    var newDir = Vector2.Reflect(rb.velocity, collision.GetContact(0).normal);
    newDir = moveDir;  
}

?

[safe root]

I see and it comes back Null

[polar acorn]

Then there is no object of that type in the scene when this runs

[novel shoal]

@rich adder

[polar acorn]

!code

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/, https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code

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

[swift crag]

Got it working. Here is an example of a tank with both a turning turret and an elevating gun.

Raising the gun is a little more complicated.

[novel shoal]

https://paste.ofcode.org/36KxnTY6MQET6d73a3WRRy4

[amber nimbus]

Thanks a lot man :D

[swift crag]

In short, it finds the direction to the target, then rotates it so that it's facing forwards. Then it rotates towards that.

[rich adder]

close but I think you should still do the ballmove speed multiplier like I said

so you should normalize new dir

[candid oyster]

Is visual studio the superior IDE?
I have gotten a JetBrains License

[novel shoal]

aren't you doing ball speed +=1?

[rich adder]

they both do the exact same thing, jetbrains just has a few extra bells

[rich adder]

I'm adding the speed variable so can keept rack of it

[novel shoal]

i guess i'll just watch a big physics tutorial in unity since i am not understanding so much

[rich adder]

this has more to do with vector move than physics

[novel shoal]

it's kind of difficult for me to implement what i know about physics in unity with such a small knowledge

[novel shoal]

i did vectors but i don't know what a normal is

or, maybe i did it but it had a different name (i am italian)

[rich adder]

you've seen the few images, is just the direction A wall is facing for example

[candid oyster]

so should I switch?

to jetbrains?

[rich adder]

I can't make life decisions for you lol

[sharp wyvern]

a normal vector is a vector with magnitude 1.0- also called a DIRECTION vector. What great about normal vectors is: if you multiply them a by a single float sa X.. you know the length of your final vector will also be X.

[rich adder]

use whichever one, they both do the same

[candid oyster]

I wouldnt call it a life decision

[rich adder]

its preference mainly

which is subjective

[swift crag]

this is not correct

Perhaps you're thinking of how you "normalize" a vector

The names are confusing, yes.

[candid oyster]

okay thanks

[sharp wyvern]

no, I'm tyhinking of a normal vector

[swift crag]

A normal vector is a vector that points straight out of a surface.

It's the direction the surface faces.

[novel shoal]

it's still kind of difficult and i feel bad for asking so much stuff from you that is something very easy

[rich adder]

its fine , its good to learn

[sharp wyvern]

that is a USE of a normal vector. a normal vector has magntidue 1.0

[swift crag]

normal vectors are generally normalized, yes, but you are not correct.

[swift crag]

A vector with a length of one is a unit vector.

[polar acorn]

Normal Vector is not the same as a Normal_ized_ Vector. A Normal is Normalized, but not all Normalized vectors are Normals

[rich adder]

imagine those squares are bendy walls @novel shoal the blue arrow is which way "they're facing"

which is the normal

[novel shoal]

ok

[swift crag]

When you bounce something off a surface, you reflect its velocity using the normal vector.

[novel shoal]

and what does "normalizing" mean?

[swift crag]

That is a separate concept.

[rich adder]

turning the value to max of 1

[swift crag]

To normalize a vector is to make its length exactly 1.

[novel shoal]

okk

[swift crag]

"normalization" more generally means to make something consistent or uniform

[swift crag]

For example, suppose I do this

Vector3 dir = rigidbody.transform.position - transform.position;
rigidbody.AddForce(dir, ForceMode.Impulse);

The further away I am from the target, the harder I shove it.

[spare umbra]

Where is game's screen resulation (1920x1080) data stored in a Unity exe build folder?

[novel shoal]

so i should just make newDir.normalize=moveDir

[swift crag]

Vector3 dir = rigidbody.transform.position - transform.position;
dir = dir.normalized;
rigidbody.AddForce(dir, ForceMode.Impulse);

Now, no matter how far the target is, it gets shoved by a consistent amount.

[rich adder]

newDir.Normalize()

or you can normalize the result of the whole Reflect which is what I did

[swift crag]

Normalize a vector if all you care about is the direction

rather than both the direction and length

and if all you care about is the length, get the vector's .magnitude !

[novel shoal]

thx

[swift crag]

vec = vec.normalized * vec.magnitude;

This code does nothing

(plus or minus floating point errors)

[chilly vigil]

https://hastebin.com/share/etezogogeh.csharp gpt came up with this to sovle it

[novel shoal]

my ball is still not bouncing, i am giving up, sorry for bothering you

[rich adder]

let me see current code

[novel shoal]

https://paste.ofcode.org/iHCe9TNSVPxgCi6NFVtJKM

i tried my best but most likely this is just out of my range

i'll watch more tutorials before trying something made by me

[swift crag]

is there a reason you're reflecting the ball in the collision method?

the ball is already gonna bounce

[novel shoal]

(even though it's not exactly made by me)

[swift crag]

or is it not bouncing the way you want it to?

[rich adder]

you never applied the new direction

[novel shoal]

it's not bouncing at all

[rich adder]

@novel shoal

[swift crag]

yes, you've calculated a new direction, then thrown it out

[verbal dome]

% and == comparison with Time.time... oof gpt
This is very unreliable cs if (Time.time % ShrinkInterval == 0)
It only works if Time.time is exactly 0, 60, 120, etc.

[rich adder]

look at my code again cs private void OnCollisionEnter(Collision collision) { var newDir = Vector3.Reflect(moveDir, collision.GetContact(0).normal).normalized; moveDir = newDir; if(collision.collider.TryGetComponent(out PaddleMove _)) { moveSpeed++; } moveDir *= moveSpeed; rb.velocity = moveDir; } @novel shoal

[swift crag]

you've also overwritten newDir with moveDir

[novel shoal]

i have to do rb.velocity=newDir?

https://paste.ofcode.org/9R3jcwb372qAZCNg9ubTUZ
like this?

[swift crag]

this will reset the velocity to exactly 1

because you're normalizing newDir before assigning it to rb.velocity

remember: you normalize a vector if you don't care about its length

[rich adder]

yes, you're still missing a velocity you can increase

[swift crag]

you definitely care about this vector's length!

also, this is not correct

rb.velocity += Vector2.one;

This will add 1 to the X and Y velocities

[rich adder]

^^ which is why I suggested a speed variable instead if you want speed increase

[novel shoal]

isn't that what i want?

[rich adder]

that vector.one thing is useless

[swift crag]

Do you want the ball to move 1 meter per second faster up and right every single time?

possibly slowing the ball down

I think you want it to increase its speed

if the ball is moving down and left, you will slow it down by increasing its X and Y velocity by 1 each

[novel shoal]

oh right

i didn't think about it

sorry

[rich adder]

you see why I used a variable for speed 😏 @novel shoal
moveDir *= moveSpeed;

[swift crag]

we normalize the direction, then multiply it by the move speed

[novel shoal]

i didn't understand what was that "*="

[swift crag]

Since normalizing a vector makes its length exactly 1, multiplying that vector by moveSpeed gives you a vector whose length is moveSpeed

[rich adder]

its the same as doing moveDir = moveDir * moveSpeed

[swift crag]

so now the ball will have a speed of exactly moveSpeed

[novel shoal]

i have never used *= in python so i didn't know what was that

[rich adder]

you should ask to clarify something when you don't understand it

[novel shoal]

i was already asking too much

i didn't want to annoy you

[rich adder]

its fine, thats what this channel is for

not a unity specific thing per-se but yeah this is a simple math operator for multiply

but we short it when we dont want to repeat ourselves

so
myValue = myValue + 4;
same as
myValue += 4;

[swift crag]

If you do not recognize an operator, you can look it up here https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/

[novel shoal]

i knew that with - and +, i just didnt know it existed for / and * since i had never used that before

[rich adder]

Ahh gotcha well yeah its the same

[novel shoal]

so i have to normalize the vector after using it with the velocity?

[rich adder]

no you normalize because you only care about direction

[swift crag]

i don't understand what you mean by "using it with the velocity"

[novel shoal]

https://paste.ofcode.org/NLXMZVqaMiwYqCiZCVW4i7

[rich adder]

no

normalize first

then apply speed

[novel shoal]

ok

fixed

[swift crag]

if you normalize afterwards, you're completely throwing out the speed

roughly the same as doing

x = 3;
x *= 4;
x = 1;

[rich adder]

also you have to pass moveDir back @novel shoal

not newDir

[swift crag]

is there a reason to even store moveDir?

[rich adder]

in my code I use it for other stuff but no they dont have to 😛

(in mycode is a backing field for public MoveDir get)

[novel shoal]

i have a question

@rich adder

what does the keyword "var" means? is it a short of "variable"? but in c# i have to declare the type of a variable before doing anything with it

[rich adder]

yup but its a type that is inferred

if you did
var myValue = 0 the compiler think its a int

if you did var myValue = 0f now its a float

[wintry quarry]

When you hover your mouse over var in your code editor all the secrets will be revealed

[novel shoal]

so depending on which value you assign it changes? so it's like in python when you don't assign a value

[rich adder]

well you can only assign its type once and it has to be clear on what it is

[novel shoal]

it highlights Vector2

[rich adder]

c# is not dynamically typed like js or maybe Py? i dont use py sorry

[novel shoal]

i don't know

[wintry quarry]

Yep - so in that particular case var is equivalent to writing Vector2

it's just a shortcut for the type of whatever is on the right side of the = sign

[novel shoal]

so basically i can just type "moveDir" instead of "newDir" when i am storing it?

[novel shoal]

okk ty

[rich adder]

you technically don't need moveDir I had that in mycode for keeping track where ball is from some other code

you can just assign the newDir to rb.velocity

[novel shoal]

https://paste.ofcode.org/h7yh6ZdYujsRnKfMvz3xLX

[dense root]

My goodness chatGPT is useful as a beginner for niche problems

[novel shoal]

is this fine?

[rich adder]

no

rb.velocity += Vector2.one; is stil wrong

[novel shoal]

oh i forgot to fix it

[rich adder]

 if (collision.gameObject.CompareTag("Player"))
        {
            speed++;
        }

        var newDir = Vector2.Reflect(rb.velocity, collision.GetContact(0).normal);
        newDir.Normalize();
        newDir *= speed;
        rb.velocity = newDir;```

[novel shoal]

https://paste.ofcode.org/35DJGgVvaYSpxtikGeTcysE

noooo

im still wrong

hold on

[rich adder]

😂

[novel shoal]

now it should be correct (i hope so)

now i got it

if i increase the value that i use to multiply the direction, the direction will increase

https://paste.ofcode.org/A2Qh4z6vyRB9R5dDAJ6EiW

[rich adder]

wdym

[novel shoal]

the newdir vector is increased every time it its something by the speed variable, which is always itself, except if it its an object whose tag is specified, because if it hits that object, the speed will increase
if it hits a barrier; 120
if it hits an object;121

1*20

1*21

it made the text in italics due to the *

[polar acorn]

!code

[eternal falcon]

Posting code

📃 Large Code Blocks

Use links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/, https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code

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

[halcyon osprey]

I'm following a simple top down rpg movement tutorial, and I'm trying to make sure I understand how everything is working so I can actually learn from the code. In the point of making a variable to define the move speed, the programmer gave it a value of 5f, I don't understand what the "f" stands for, if anything, as it doesn't give me any errors without it either.

[novel shoal]

this

[novel shoal]

float

[swift crag]

It’s used to clarify what type you want.

It’s important if you want a decimal value

1.5 is a double, not a float

It’s a more precise type and it won’t automatically convert to float

1.5f is a flost

5 is an int. That can automatically convert to float

Hence why you didn’t need it

I sometimes add the f anyway

[novel shoal]

is this right now?

[wintry quarry]

To learn more about literal values in C#: https://www.tutorialspoint.com/csharp/csharp_constants.htm

[halcyon osprey]

Oh that makes more sense, thanks

[novel shoal]

@rich adder

[summer stump]

Have you tried it?

[novel shoal]

i have just tried

and it still doesnt bounce

[swift crag]

Have you checked if your code is even running?

[novel shoal]

it's assigned to the ball object if that's what you are asking

[swift crag]

That’s not what I’m asking

Add a Debug.Log statement to the method and see if anything appears in the console

[novel shoal]

ok

yea it's running

[summer stump]

Is the Paddle tagged Player?

[novel shoal]

it should bounce regardless of the tag of the collider

[summer stump]

No. Not using velocity

[novel shoal]

if the tag is player it only makes the speed higer

but it should bounce anyway

[summer stump]

Oh I'm sorry. I see what you mean.
The code isn't behind the tag, gotcha

[novel shoal]

anyway yeah, both paddle have the tag "Player"

lol i should have started to study 2 hours ago

what's the issue with my code then?

idk how to solve it

[rich adder]

wait is the bounce working and its just speed broken ?

can you send current code again

[novel shoal]

https://paste.ofcode.org/QjXafayzNZ82cWuxWaEGaf

it shouldn't tho

cuz if it touches the paddle, it goes on until it touches the barrier

[rich adder]

are you able to make a quick video of issue not sure I understand

[novel shoal]

idk how to make videos on pc

can i make it with my phone?

[rich adder]

ehh its fine this time sure, but you should learn how to use OBS https://obsproject.com/

[novel shoal]

oh right i have OBS

i completely forgot about it

i haven't been using it since some yt videos

literally 2 years ago

[rich adder]

code looks fine . also might want to share the rigidbody settings you got

[merry spade]

If I do StopAllCoroutines();

public IEnumerator TimerStart()
    {
        currTime = 1;
        reviveTimer.fillAmount = currTime;
        while (true)
        {
            currTime -= Time.deltaTime * 0.1f;
            reviveTimer.fillAmount = currTime;
            if (currTime <= 0f)
            {
                cancelButton.onClick.Invoke();
                print("Invoke");
                break;
            }
            yield return null;
        }
    }

my cancelButton gets invoked... why?

[wintry quarry]

I would guess the two are not related. It's being called normally in the coroutine

[rich adder]

Is StopAllCoroutine being called on the correct one that started it ?

[wintry quarry]

possibly you are not calling StopAllCoroutines on the correct object

[merry spade]

this is the whole code:

public class DeadTimerUIScript : MonoBehaviour
{
    [SerializeField] private Image reviveTimer;
    [SerializeField] private Button cancelButton;
    private float currTime;

    public IEnumerator TimerStart()
    {
        currTime = 1;
        reviveTimer.fillAmount = currTime;
        while (true)
        {
            currTime -= Time.deltaTime * 0.1f;
            reviveTimer.fillAmount = currTime;
            if (currTime <= 0f)
            {
                cancelButton.onClick.Invoke();
                print("Invoke");
                break;
            }
            yield return null;
        }
    }
    public void TimerStop() 
    {
        currTime = 0;
        StopAllCoroutines();
    }

}

and if I call TimerStop() it doesnt work

[wintry quarry]

where did you sttart the coroutine from?

[rich adder]

yeah you start it from somewhere else

[swift crag]

I bet you start the coroutine on another object.

[wintry quarry]

Seems like not in this object

[merry spade]

from another script

[rich adder]

it belongs to that other object

[merry spade]

oh

ok

[swift crag]

Each MonoBehaviour has a list of coroutines it's running

[wintry quarry]

The reference you call StartCoroutine on matters A LOT

[rich adder]

otherScript. StopAllCoroutines();

[wintry quarry]

pay close attention

[swift crag]

when you call StartCoroutine, you throw the IEnumerator into the list

[rich adder]

make it mp4

[swift crag]

(this should be in the Video or Output sections of the settings)

i forget which

[rich adder]

its better to make a method in this class to StartCoroutine

instead of calling StartCoroutine from another class for this very reason tbh

[merry spade]

so I should do

        deadTimerUIScript.StopAllCoroutines();

in the object's script i started it?

[swift crag]

no, this is identical.

[novel shoal]

how do i do it?

[swift crag]

when you call StopAllCoroutines, you're telling the MonoBehaviour to throw out its list of coroutines.

it doesn't matter where you call it from

I'm guessing you have another class that looks like this

[merry spade]

what do i have to do then to stop the timer and not getting the cancel invoked

[novel shoal]

this is the rigidbody

[swift crag]

public void DoSomething() {
  StartCoroutine(timerUI.TimerStart());
}

[rich adder]

just do
public void TimerStart()
{

    StartCoroutine(Whatever());
}

[swift crag]

If you do this, then the coroutine is running on whatever object DoSomething is on

[rich adder]

call TimeStart instead

this way it belongs to this script

[swift crag]

So yes -- do what navarone suggested

now the coroutine will be running on the DeadTimerUIScript object

and calling StopAllCoroutines on that object will stop it

[merry spade]

ah

ok

thank you

[rich adder]

in the OBS settings

[merry spade]

it doesnt work

its still getting invoked

[swift crag]

then show your code

[merry spade]

ah

nvm

[swift crag]

I can't guess what you wrote

[merry spade]

because i set currTime to 0

let me check it

yeah it works now, thank you to y'all

[swift crag]

ah, good

[quick ruin]

the current transform moves towards and past the target how do I stop it at the target Point

[rich adder]

make sure the pivot is accurate?

[wintry quarry]

MoveTowards will not overshoot

[swift crag]

If it only moves a little too far, then yeah, your pivot is off

[wintry quarry]

so some other code would be responsible - or yes your object pivot is not correct

[merry spade]

No it doesnt work, it doesnt get invoked instantly right now but after the time expires

public class DeadTimerUIScript : MonoBehaviour
{
    [SerializeField] private Image reviveTimer;
    [SerializeField] private Button cancelButton;
    private float currTime;

    public IEnumerator Timer()
    {
        currTime = 1;
        reviveTimer.fillAmount = currTime;
        while (true)
        {
            currTime -= Time.deltaTime * 0.1f;
            reviveTimer.fillAmount = currTime;
            if (currTime <= 0f)
            {
                cancelButton.onClick.Invoke();
                print("Invoke");
                break;
            }
            yield return null;
        }
    }

    public void TimerStart()
    {
        StartCoroutine(Timer());
    }

    public void TimerStop() 
    {
        StopCoroutine(Timer());
    }

}

[novel shoal]

it kinda bounced on the paddle, but not on the barrier

[swift crag]

That is incorrect.

[wintry quarry]

that's not how StopCoroutine works

[swift crag]

https://docs.unity3d.com/ScriptReference/MonoBehaviour.StopCoroutine.html

you're telling it to stop the return value of Timer()

If you had previous passed that exact value to StartCoroutine, it would indeed stop the coroutine

[rich adder]

yeah the direction seems to be wrong.

[swift crag]

var enumerator = Timer();
StartCoroutine(enumerator);
StopCoroutine(enumerator);

[rich adder]

also is the Rotation on rigidbody locked by any chance ? @novel shoal

[swift crag]

But this is just starting one coroutine and then stopping another one that hasn't even started yet

StartCoroutine(Timer());
StopCoroutine(Timer());

[novel shoal]

the z rotation

[rich adder]

yeah dont lock it, try without it

[swift crag]

If you want to stop that specific coroutine, save the IEnumerator that Timer() returns into a field, then pass it to StopCoroutine later

or you can just keep using StopAllCoroutines()

[rich adder]

You can also store it in a Coroutine

[novel shoal]

okok, i locked it bc a tutorial told me to do so

[swift crag]

in that case, you'd store the return value from StartCoroutine, yeah

[novel shoal]

still not bouncing

[merry spade]

yeah got it now thank you!

[timber tide]

You should get the coroutine ref when you create one so you can store that specific instance

[novel shoal]

@rich adder what?

[rich adder]

nah nothing I thought It couldve been the wals for some reason, uh we have to Debug the direction

[swift crag]

I am wondering if we're fighting the physics system here

[novel shoal]

how can we debug the direction?

[swift crag]

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

Notice how OnCollisionEnter2D executes after the physics system is done updating

[rich adder]

not sure how, I have this exact code and it works flawlessly

but in 3D

Im wondering if maybe the in direction might need to be normalized

[swift crag]

hm, even if the collision is really wasteful and loses most of the velocity, the tiny bit that's left should still be enough to make your code work

[novel shoal]

i don't get why it worked with the paddle here

[rich adder]

we use Gizmos 🙂

[novel shoal]

gizmos?

[rich adder]

I think something might be wrong with the returned normal

[rich adder]

haha yeah thats why I try to extract things like direction into variable so i can use it to debug with gizmos (lines/arrows)

[swift crag]

well, to clarify

you're probably about to use Debug.DrawLine

I guess that is technically a kind of gizmo?

I think of all the stuff in the Gizmos class when you say "gizmo", but that's fair

[rich adder]

yeah i barely use Debug class

for that

I use Gizmos.

[swift crag]

I use Debug.DrawLine a ton

super useful

it lets you draw a line in the scene view (and the game view, if you turn on gizmos there)

[novel shoal]

what the hell are gizmos?

[swift crag]

I was using it while figuring out that tank turret earlier

that's a gizmo!

[rich adder]

things that help us visualize things

particularly invisible to human eye stuff

[swift crag]

actually, is that a gizmo

[novel shoal]

okk

[swift crag]

[rich adder]

pivot is a gizmos for sure

[novel shoal]

so i need to use gizmo.drawline?

[rich adder]

or Ray probably better

[swift crag]

The collider visualizer is definitely a gizmo (:

[swift crag]

remember that this would be Debug.DrawRay

oh, I see: there is also Gizmos.DrawLine/Gizmos.DrawRay

[merry spade]

can one object have two tags?

[swift crag]

The downside of that is that you have to do it in a specific gizmo-drawing method

[rich adder]

no

[rich adder]

just use Types

[swift crag]

Debug.DrawLine and Debug.DrawRay can be used anywhere.

[swift crag]

what are you trying to do?

[merry spade]

I will look it up ty

[swift crag]

that might be too vague of an answer lol

[rich adder]

yeah just realized

[novel shoal]

i should use Gizmos.DrawLine(rb.transform,collider.transform)?

[rich adder]

public class MyCoolClass : MonoBehavior
class is a type

[swift crag]

Debug.DrawLine takes two positions and draws a line between them

i think navarone is suggesting identifying objects based on the components they have

instead of using a tag

so you'll look for a Door component instead of checking if the object has a tag named "Door"

[rich adder]

yes Im bad at explain sorry

[swift crag]

So suppose an object can both be damaged and collected

[merry spade]

? but i need to differentiate between temporary things and temporary things are special

[swift crag]

Explain your problem.

[novel shoal]

is there a method to check wheter an object has a said component?

[swift crag]

it will have a Damageable component that handles being damaged and a Collectible component that tells you what you get when you pick it up

[wintry quarry]

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

[rich adder]

im gonna try your other code in a project real qucik too just in case. and no thats not what u want to debug

[swift crag]

you can decide if something can be damaged by testing if it has a Damageable component

if it does, you can damage it. if it doesn't, you can't.

[merry spade]

i got the plane and the obstacles as temporary objects, but the obstacles should be deleted with overlapsphere on revive but the plane should stay so i got all the objects from overlap sphere and now i want the temporary obstacles to be deleted but not the plane

[wintry quarry]

use a layer mask to exclude certain objects from your physics queries

[novel shoal]

oh ok

[swift crag]

let's rephrase this

[merry spade]

yeah that sound good thank you

[swift crag]

explain what happens in your game

no technical details; just tell me what the player sees

[merry spade]

ok the player dies-> all obstacles in the area gets deleted so he can drive by

but not the ground

[novel shoal]

using UnityEngine;

public class TryGetComponentExample : MonoBehaviour
{
void Start()
{
if (TryGetComponent<HingeJoint>(out HingeJoint hinge))
{
hinge.useSpring = false;
}
}
}
what's <HingeJoint>(out HingeJoint hinge)?

[wintry quarry]

<HingeJoint> is actually unecessary

[rich adder]

unity has shite example

[wintry quarry]

but it's the generic type parameter

[rich adder]

but yeah what praetor said

[wintry quarry]

HingeJoint is just the type of the component you want to check for. They are using HingeJoint as an example

[swift crag]

this is using something called an out parameter.

It allows the method to assign one of your variables.

[novel shoal]

and (out hinge)?

[wintry quarry]

You can just write if (TryGetComponent(out HingeJoint hinge))

[swift crag]

So you actually hand that variable over and say "here, put something it"

If you already have a variable named hinge, you'd just write this

[wintry quarry]

() is where method parameters go.
There is one parameter and it's out hinge
out just means it's an out parameter. An out parameter comes out of the call, sort of like an extra return value

[swift crag]

TryGetComponent(out hinge);

You can also declare the variable at the same time that you call the method.

This is for convenience.

[novel shoal]

hinge is the object?

[swift crag]

TryGetComponent(out HingeJoint hinge);

This is identical to...

[wintry quarry]

hinge is a reference to the component, if it exists

[swift crag]

HingeJoint hinge;
TryGetComponent(out hinge);

[novel shoal]

okk

[swift crag]

the method needs to give you two things:

• whether or not it worked
• the result

[nimble apex]

hingejoint is a component in 2D games

[swift crag]

so it winds up using an out parameter for the latter

[swift crag]

Okay, so I think using separate layers would be reasonable here

You could also just give every obstacle an Obstacle component.

[merry spade]

yeah i used it and it works, thank you!

[swift crag]

and then only destroy things that have an Obstacle on them

[rich adder]

I fixed it!

[merry spade]

wait what

[rich adder]

sweet

Now I remember why I made an external Var

[merry spade]

you can make own components?

[swift crag]

well, sure

[rich adder]

and yes its to do with the physics and .velocity like Fen said i think

[swift crag]

there's nothing really special here

[slender nymph]

where have you been writing your code if not on your own components?

[swift crag]

note that every thing that derives from MonoBehaviour is defining a component

[rich adder]

change
newDir = Vector2.Reflect(rb.velocity, collision.GetContact(0).normal);
to
newDir = Vector2.Reflect(newDir, collision.GetContact(0).normal);
@novel shoal

[merry spade]

you mean scripts

[swift crag]

MonoBehaviour is a specific kind of component

[novel shoal]

if (TryGetComponent(out Bar1) || TryGetComponent(out Bar2))
force++;
it says this is an error

[swift crag]

"Scripts" is a really vague term that I don't like using.

[slender nymph]

your scripts are defining components. each class that derives from MonoBehaviour is a component like Fen pointed out

[swift crag]

public class Foo : MonoBehaviour { }

This defines a class named Foo. Foo derives from MonoBehaviour.

[rich adder]

whats the error ?

[novel shoal]

okk

what's the difference?

[swift crag]

MonoBehaviour (any custom behaviour you've made) derives from Behaviour (any component that can be enabled and disabled), which derives from Component (any component)

[novel shoal]

bar1 is a type but it's used as a variable

[merry spade]

yeah i mean those monobehaviour things and other stuff is my futures problem but i wont learn it today it seems very complex im happy with the skills of monobehaviour xD

[rich adder]

by the time its taking the rb.velocity value , it is the value collided with the wall

[cosmic dagger]

I agree; a script (file) is more a Unity term . . .

[rich adder]

so you're essentially reflecting the rb.velocity that collided with the wall

@novel shoal

[swift crag]

I use the term "script" to refer to a script asset

[grizzled stirrup]

is there a way i can get the value of the cube when it touches the red part? i already have it destroy itself but i cant figure out how to get the red part to get the value of the cube

[slender nymph]

you'll have a much easier time writing code and even understanding help provided here if you learn what you are doing instead of putting it off

[swift crag]

the...value?

[rich adder]

now I remember why I also stored velocity in a seperate value this way it isn't affected by the collision @novel shoal

[grizzled stirrup]

hold up let me get the script

[novel shoal]

don't we want to reflect that speed?

[merry spade]

that sounds rude haha yeah i will look into it

[rich adder]

no we want to reflect the speed that it came in with before the collision

which is stored in newDir

before changing it

[novel shoal]

oh ok that kinda makes sense

[grizzled stirrup]

this is the script for the cube and i cant figure out how to have the thing under it to get this value of this specific instance of the cube

[rich adder]

it should work 💯 now

[swift crag]

If the ball was stopping dead when it hit the wall, then you'd have no velocity at all

so yeah

[merry spade]

but its hard to understand everything when youre self teaching because you cant learn new ways of doing things

[slender nymph]

why is that variable static?

[novel shoal]

so we are trying to reflect a speed that has just been negated because it collided with the collider?

[cosmic dagger]

Really, how so? They're encouraging you . . .

[rich adder]

yup it made sense after it kinda just flopped

[swift crag]

there is no value on the specific instance of the cube, because it is static!

[novel shoal]

i gotta fix this before lol

[grizzled stirrup]

ohhhh

[rich adder]

we are reflecting the original direction which is the uneffected velocity stored in newDir

[swift crag]

Anyway, you need to:

• Detect that the red area has hit the cube
• Get the BasicOreScript object from the object you hit
• Get the value from the BasicOreScript object

[rich adder]

if we reflect the lost momentum we just flop down as you saw

[novel shoal]

yeah, i meant we were*

[cosmic dagger]

That value is applied to the class, not a specific instance . . .

[rich adder]

still didnt say what the error is

also please do use brackets. even for one liners

[grizzled stirrup]

so i have to mention the basicorescript in the hthing under it?

[novel shoal]

@rich adder

[swift crag]

I do not know what you mean. I think you need to start by learning how to detect a collision.

[swift crag]

Ah, good

[rich adder]

yeah you need to store Bar inside a variable if you only want to out to a variable that already has the type

[swift crag]

_ore is a GameObject

GameObject does not have a field called _worth

It will never have such a field

[rich adder]

right now youre trying to pass a blueprint @novel shoal which is a class

[grizzled stirrup]

so i have to get the script from the gameObject?

[novel shoal]

i am using them as much as i can

[novel shoal]

so i have to say Bar1=getcomponent<Bar1>?

[rich adder]

no you assign bar a variable

and use the variable

[swift crag]

(this should go into a thread too, btw)

[rich adder]

yeah we are flooding chat make a thread @novel shoal

[solemn fractal]

hey guys was able to destroy all enemies inside a list i have.. when i spawn them with instantiate I put them on a list and delete all .. it was working now I have this message here, and cant figure it out what could it be as I didnt change anything in the logic

    void DestroyAllEnemies(){

        foreach (Enemy enemy in _enemyList)
        {
            Destroy(enemy.gameObject);
        }
        foreach (BossOne bossOne in _BossOneList)
        {
            Destroy(bossOne.gameObject);
        }
        _BossOneList.Clear();
        _enemyList.Clear();
    }```

[polar acorn]

Something is likely still referencing something in one of those lists

[solemn fractal]

I add to the list the ones that spawn, and I kil them and destroy, and after a whiule I want to delete all in the scene.. but I think it is trying to destroy also the ones I already killed

[polar acorn]

So, when you destroy them, you should remove them from the list

[solemn fractal]

yeah, but how do I know which one is the one I killed to remove from the list?

[rich adder]

save the reference to list when you spawn or something , then remove itself ondestroy

[solemn fractal]

Hmm not sure if I understood..

[rich adder]

isn't the thing that spawns it the same that keeps track ?

[solemn fractal]

example, I am adding like that:

     private IEnumerator SpawnPoison(float waitTime){
        
        while (true){

            float randomPositionX = Random.Range(-40, 41);
            float randomPositionY = Random.Range(-23, 24);
            float playerX = _player.transform.position.x;
            float playerY = _player.transform.position.y;

            Enemy poisonPos1 = Instantiate(_enemyPrefab, new Vector3((randomPositionX + playerX), (playerY + 41), 0), Quaternion.identity);
            Enemy poisonPos2 = Instantiate(_enemyPrefab, new Vector3((randomPositionX + playerX), (playerY + -41), 0), Quaternion.identity);
            poisonPos1.data = enemyTypeList[3];
            poisonPos2.data = enemyTypeList[3];
            _enemyList.Add(poisonPos1);
            _enemyList.Add(poisonPos2);

            Enemy poisonPos3 = Instantiate(_enemyPrefab, new Vector3((playerX + 56), (playerY + randomPositionY), 0), Quaternion.identity);
            Enemy poisonPos4 = Instantiate(_enemyPrefab, new Vector3((playerX + -56), (playerY + randomPositionY), 0), Quaternion.identity);
            poisonPos3.data = enemyTypeList[3];
            poisonPos4.data = enemyTypeList[3];
            _enemyList.Add(poisonPos3);
            _enemyList.Add(poisonPos4);    
            yield return new WaitForSeconds(waitTime);
        }
    }```

[rich adder]

you can also just make this tracker a singleton

ease of access

or just pass the script that has this list onto the object when you spawn it
like
poisonPos3.spawner = this

or something

[solemn fractal]

hmm ok, I will try something. thank you !

[rich adder]

you're welcome
Here is more info (better to use a method for this)
https://unity.huh.how/references/simple-dependency-injection

[solemn fractal]

ok, thank you a lot it will take some time for me to achieve but as always I will get there.. thank you !

[quick ruin]

this is setting the Z position to -10, is there an ez fix?

im in 2D

[polar acorn]

That is because that's likely where your camera is, so that is the position of the mouse cursor in world coordinates. If you want the Z value to be different, change it afterwards

[ornate swift]

why don't I have an option to make a volume game object?

[rich adder]

whats a volume gameobject

as in Post Processing Volume?

if so do you have a render pipeline that supports it ?

[ornate swift]

In the tutorial I am watching they have volume objects

[ornate swift]

https://www.youtube.com/watch?v=_RbxRYAWl3g

[rich adder]

bastards stole my voice actor from another vid

[rich adder]

anyway my question from before still applies

[ornate swift]

I don't know

I'm in the normal 3d project

[rich adder]

well then its wrong

the video says HDRP

so you need HDRP

URP and HDRP have built in Post Processing + Volume

Built-In "Normal" one doesn't

make a new project and select HDRP

[rich adder]

https://docs.unity3d.com/Manual/render-pipelines-overview.html

[ornate swift]

can I make my existing project hdrp?

[rich adder]

yeah but it takes a bit to configure it

also any material you have now has to be converted using the converter or they will be pink

[rich adder]

https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@12.0/manual/Upgrading-To-HDRP.html

if you dont have much done inside this project, I suggest you just start from template preconfigured for you

[ornate swift]

thanks!

[tepid stratus]

I'm having an issue with a collider, can I talk with someone in DM's about it?

I hope I posted this in the right channel, sorry if I didn't

[rich adder]

just post your question

[tepid stratus]

Uh alright, I'm very new to Unity so sorry if it's a dumb question

I have this trash can which consists of the base and the lid which are children of an empty object

and I'm trying to use the void OnMouseDown() method in a script in the empty object

[rich adder]

Is the script on one of collider

[tepid stratus]

The script is a component of the TrashCan object

[rich adder]

which one, i don't see it

[tepid stratus]

Oh wait whoops, that was an older screenshot wait a second

The script did work when I used a simple rectangle with a box collider, but not when I put it in the empty object with the 2 children

[rich adder]

yes because the signal doesn't go to children or parent

only the script with the collider clicked

[tepid stratus]

Oh okay, can I make it so the signal does go through to children?

[rich adder]

depends what you need it for there is many ways

[tepid stratus]

For now I just want a simple Debug.Log message every time I click on the trash can

In the future I would like the lid to move up but I don't know if that changes anything

[rich adder]

why not just put the script on the lid?

or you want the whole thing to be clicked ?

[tepid stratus]

I would like the whole thing to be clickable

and then send a log message

[rich adder]

if you put a rigidbody and turn it kinematic the children can also be clicked

[tepid stratus]

Does adding a rigidbody add gravity to the object?

[rich adder]

not kinematic no

[tepid stratus]

Alright, let me try real quick

[cunning heath]

Hey, I need some help. I am trying to use Editor scripts to create copies of a prefab and before making the copy access and modify some variables inside the prefab which I have linked to it using another script that I attached in unity. The code is like this

GameObject cellobj=AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Prefabs/cell.prefab");
var attr = cellobj.GetComponent<cell_attr>();
Cell newCell=PrefabUtility.InstantiatePrefab(cellobj) as GameObject; 

But it gives me an error

The type or namespace name 'cell_attr' could not be found (are you missing a using directive or an assembly reference?)

How do I access and modify cell_attr for this gameObject copy before instantiating the prefab.

[tepid stratus]

It works now, thank you so much :)

[rich adder]

what is cell_attr

[cunning heath]

variable

int

or object

[rich adder]

you can't use variable in there

you need a T type Monobehavior

[cunning heath]

I don't understand. Can you explain a bit.

I am using this inside an editor script btw

[rich adder]

what is even the point of attr its not doing anything

[cunning heath]

I haven't included the whole code

I use this for checking some conditions etc

[rich adder]

ok well regardless, your code error is telling you your type doesn't exist

[polar acorn]

GetComponent Gets Components

Is cell_attr a component

[cunning heath]

I will be back in 10 minutes need to take some screenshots

[rich adder]

if its code please dont screenshot it 🙂

[cunning heath]

no the unity editor

Xd

So blank path is the prefab I am loading.

How can I get the array UpNeighbours which contains objects to other prefabs in an Editor script.

[rich adder]

its inside Tile

[wintry quarry]

Same way as any other variable in any other script. From a reference to the script

[cunning heath]

Yes but if I make a gameobject of blank tile can I get this

[rich adder]

although isn't that a Unity class 🤔

[wintry quarry]

It's a custom one with the same name

[rich adder]

Ahh makes sense

[wintry quarry]

You seem to be trying to make an editor tool before learning the very basics of Unity TBH @cunning heath

[cunning heath]

Sorry I am pretty new to Unity I also apologize for the slow response.

[wintry quarry]

You might be better off starting with basic Unity tutorials first to learn the basics

Before doing something more advanced like editor tooling

!learn is a good place to start

[eternal falcon]

:teacher: Unity Learn ↗

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

[cunning heath]

Thanks will check it

[cunning heath]

So the issue is Tile is a script attached to the prefab. I want to modify the values from the Tile script for a specific prefab

In another editor script

[rich adder]

#💻┃code-beginner message