💻┃code-beginner

[rough granite]

you were already given your answer so whats the problem now?

[supple flume]

me or nuke?

[rough granite]

you, the last message Faywilds sent

[sour fulcrum]

faywilds link is the route 💯

[supple flume]

yeah didnt work
there is no onUnitCircle
but there is a sphere
and the sphere didnt work as intended

[sour fulcrum]

ohh i did not realise thats a new thing

[rough granite]

There is you'd just need to update your unity editor version to 6.3 or newer

[stuck parrot]

question: how do I backup my code if i try to mess with my code and want to go back if I break stuff? For mow i copy the script and if something happens i rename the copy to the original and delete the broken. I know theres something like git but i dont know how to use that or if it even works with unity

[frosty hound]

onUnitCircle is new, so if you're on an old Unity it won't exist.

Just use insideUnitCircle and normalize the result 🤷‍♂️

[slender nymph]

ah yeah, apparently that is rather new. in that case if you don't want a point on a sphere then just normalize the point returned by insideUnitCircle and it would be pretty much the same

[supple flume]

i use 2022 unity

[sour fulcrum]

you can just sample x,z on onunitsphere right?

[frosty hound]

That'll give you a vector of length 1, and then you can multiply it by however big you want the circle to be.

If you need it to be 3D yeah

[frail hawk]

you use a version control like git

[supple flume]

would onUnitSphere work but i ignore the z?

[sour fulcrum]

oh yeah to be clear osteel and boxfriend onunitsphere is not new

just circle

[stuck parrot]

is there an human friendly alternative? im not good at using the terminal

[naive pawn]

git is not the terminal

[rough granite]

Github isnt with the terminal, only one i've used but im sure the other versions also arent

[slender nymph]

that would not be the same

[naive pawn]

git cli uses the terminal, you can use git via other clients like integrated in your ide or with github desktop

git is just the underlying system.

[sour fulcrum]

oh right different random range

[naive pawn]

(are you referring to github desktop? that's not the same thing as github)

[slender nymph]

it would still need to be normalized even after dropping the Z so you may as well just use insideUnitCircle and normalize the result

[safe latch]

yo guys, want a smooth camera in a pixel art game (as in having damping) but I do not want pixel snapping. I know Godot can do this somehow, but I don't know about Unity. I have tried just about every plugin/addon asset that there is, and they all still have pixel snapping. I know you can do imperfect pixel art or whatever, but aren't there downsides to it? If not, how do I use imperfect pixel art for a smooth camera? any help is appreciated bc i'm REALLY lost on this tbh

[rough granite]

Is it not?

[naive pawn]

it is not

[rough granite]

the website, repos, and account all lead to the same place though whats different?

[naive pawn]

github is a company/service for hosting and managing remote repositories

github desktop is a gui git client made by github

[supple flume]

like this ?

[rough granite]

well you've got the code there why not test it

[supple flume]

cause i did and doesnt work lol

[frosty hound]

Inb4 it doesn't work. What is your actual goal with this random direction?

Because if it's to move the object from its current position to a random direction from its current position, this isn't that.

[supple flume]

i want an obejct to only move like this

[frosty hound]

But you haven't explained what you're actually trying to do.

[sour fulcrum]

does vector.normalize() actually modify itself or does that return a value (im asking cuz idk)

[frosty hound]

You want the object to move around a circle?

[supple flume]

and i want it to be random movement
instant change of position

[supple flume]

no teleport as in change

[frosty hound]

You want it to pick a random position, a distance away from itself, move to that position and upon arriving, pickg another random position?

[supple flume]

yes
but the radius isnt based around the object
around a fixed object

[frosty hound]

Sure.

1. Pick a random direction via insideUnitCircle and normalize it.

2. Multiply that value by the size of the circle you want (it'll be 1 by default when normalized)

3. Calculate the point to move to by adding that value to the position of the fixed object

4. Move your character to that point

5. When it arrives, repeat the process

[naive pawn]

normalize mutates, normalized returns a modified copy

[rough granite]

dang i guess i was too slow 😔

[naive pawn]

@rough granite does that make sense? kinda along the same lines as google (search engine) and google chrome (browser) being different things

[rough granite]

yeah yeah i got what you meant

[naive pawn]

cool, gonna keep that explanation handy for future questions

[whole gulch]

hi guys, so, I'm making a game for a project for school, and I'm going nuts over this, it is malfunctioning like crazy, can someone help me pls? The game starts on the main menu, and I press play, if I return to the main menu again and then press play again the character is nowhere to be seen, and when I change scenes the player does not change too, it was working and just stopped working. The console shows no errors and I started the project from scratch, just following youtube tutorials and altering it to what I wanted, I would really appreciate it if anyone who has time adopted it and helped me out. This are the videos of the problems mentioned

[slender nymph]

show relevant code

[hallow sun]

Do you have DontDestroyOnLoad on the player?
My guess its the player falls out of the screen and you forgot to set a starting position on load scene

[near wadi]

!code

[radiant void]

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/

📃 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.

[whole gulch]

public class GameStateManager : MonoBehaviour
{
    public static GameStateManager instance { get; private set; }

    [HideInInspector] public string spawnFromName;
    [HideInInspector] public Vector2 playerPosition;
    [HideInInspector] public int sceneIndex;

    private void Awake()
    {
        if (instance == null)
        {
            instance = this;
            DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }

    public void SavePlayerState(Vector2 position, int scene, string spawnName)
    {
        playerPosition = position;
        sceneIndex = scene;
        spawnFromName = spawnName;

        PlayerPrefs.SetFloat("PlayerPosX", position.x);
        PlayerPrefs.SetFloat("PlayerPosY", position.y);
        PlayerPrefs.SetInt("SceneIndex", scene);
        PlayerPrefs.SetString("SpawnName", spawnName);
        PlayerPrefs.Save();
    }

    public Vector2 LoadPlayerPosition()
    {
        if (PlayerPrefs.HasKey("PlayerPosX") && PlayerPrefs.HasKey("PlayerPosY"))
        {
            float x = PlayerPrefs.GetFloat("PlayerPosX");
            float y = PlayerPrefs.GetFloat("PlayerPosY");
            return new Vector2(x, y);
        }
        return playerPosition;
    }

    public string LoadSpawnName()
    {
        return PlayerPrefs.HasKey("SpawnName") ? PlayerPrefs.GetString("SpawnName") : spawnFromName;
    }

    public int LoadSceneIndex()
    {
        return PlayerPrefs.HasKey("SceneIndex") ? PlayerPrefs.GetInt("SceneIndex") : sceneIndex;
    }
}```

using UnityEngine.InputSystem;
using UnityEngine.SceneManagement;

public class SavePoint : MonoBehaviour
{
    public string savePointName = "LastSavePoint";
    public Animator animator; 

    private bool playerInRange = false;
    private GameObject player;

    private void Update()
    {
        if (playerInRange && Keyboard.current.eKey.wasPressedThisFrame)
        {
            ActivateSavePoint();
        }
    }

    private void ActivateSavePoint()
    {
        if (player == null) return;

        var pd = player.GetComponent<Damagable>();
        if (pd != null)
            pd.Health = pd.MaxHealth;

        var inimigos = GameObject.FindObjectsByType<Damagable>(FindObjectsSortMode.None);
        foreach (var d in inimigos)
        {
            if (d.CompareTag("Enemy"))
                d.Health = d.MaxHealth;
        }

        GameStateManager.instance.SavePlayerState(player.transform.position, SceneManager.GetActiveScene().buildIndex, savePointName);

        if (animator != null)
            animator.SetTrigger(AnimationStrings.interacted);
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.CompareTag("Player"))
        {
            playerInRange = true;
            player = collision.gameObject;
        }
    }

    private void OnTriggerExit2D(Collider2D collision)
    {
        if (collision.CompareTag("Player"))
        {
            playerInRange = false;
            player = null;
        }
    }

    public static void SaveGame(Vector2 position, int sceneIndex, string savePointName)
    {
        PlayerPrefs.SetFloat("PlayerPosX", position.x);
        PlayerPrefs.SetFloat("PlayerPosY", position.y);
        PlayerPrefs.SetInt("SceneIndex", sceneIndex);
        PlayerPrefs.SetString("SpawnName", savePointName);
        PlayerPrefs.Save();
    }
}

public class PlayerBootstrap : MonoBehaviour
{
    [SerializeField] private GameObject playerPrefab;

    public static bool playerSpawned = false;

    public GameObject SpawnPlayer()
    {
        Vector2 spawnPos = GameStateManager.instance.LoadPlayerPosition();
        string spawnName = GameStateManager.instance.LoadSpawnName();

        GameObject existingPlayer = GameObject.FindGameObjectWithTag("Player");
        if (existingPlayer != null)
            Destroy(existingPlayer);

        GameObject player = Instantiate(playerPrefab, spawnPos, Quaternion.identity);
        DontDestroyOnLoad(player);
        playerSpawned = true;

        return player;
    }
}

[wintry quarry]

There's only one save point in the whole game?

[whole gulch]

using UnityEngine.SceneManagement;

public class MainMenu : MonoBehaviour
{
    [SerializeField] private int firstGameSceneIndex = 1;
    [SerializeField] private string firstSceneSpawnPointName;

    public void PlayGame()
    {
        int sceneIndex;
        string spawnName;

        if (PlayerPrefs.HasKey("SceneIndex") && PlayerPrefs.HasKey("PlayerPosX"))
        {
            sceneIndex = PlayerPrefs.GetInt("SceneIndex");
            spawnName = PlayerPrefs.GetString("SpawnName");
        }
        else
        {
            sceneIndex = firstGameSceneIndex;
            spawnName = firstSceneSpawnPointName;
        }

        if (GameStateManager.instance != null)
        {
            GameStateManager.instance.spawnFromName = spawnName;
        }

        if (ScreenFader.instance != null)
        {
            ScreenFader.instance.FadeToScene(sceneIndex, spawnName);
        }
        else
        {
            SceneManager.LoadScene(sceneIndex);
        }
    }

    public void QuitGame()
    {
        Application.Quit();
    }
}```

[radiant void]

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/

📃 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.

[whole gulch]

using UnityEngine.SceneManagement;

public class ColorMove : MonoBehaviour
{
    public int sceneBuildIndex;
    public string spawnFromName;

    private void OnTriggerEnter2D(Collider2D other)
    {
        if (!other.CompareTag("Player"))
            return;

        if (ScreenFader.instance != null)
        {
            ScreenFader.instance.FadeToScene(sceneBuildIndex, spawnFromName);
        }
        else
        {
            if (GameStateManager.instance != null)
            {
                GameStateManager.instance.spawnFromName = spawnFromName;
            }

            SceneManager.LoadScene(sceneBuildIndex);
        }
    }
}```

[solar hill]

@whole gulch please dont ignore the bot message

use pasting sites

[whole gulch]

srry i didn't see it

[whole gulch]

how do I use it

[wintry quarry]

you only have one save point in the whole game?

[whole gulch]

no, it is one per scene

[wintry quarry]

why do you have two different scripts saving the player position?

[solar hill]

open the site, paste the script, give us the link

[whole gulch]

idk, I lost track of it a while ago

[wintry quarry]

well that sounds like a problem - you're not sure how your code architecture is supposed to work

[solar hill]

You are supposed to be keeping track of it though

[whole gulch]

I know, I was

[hallow sun]

Still not seeing anything that says "when starting this scene, place the player in a platform" if you

[wintry quarry]

I actually think you're probably just not using SavePoint.SaveGame at all and it can and should be deleted

[rough granite]

i think it's here v

    public GameObject SpawnPlayer()
    {
        Vector2 spawnPos = GameStateManager.instance.LoadPlayerPosition();
        string spawnName = GameStateManager.instance.LoadSpawnName();

        GameObject existingPlayer = GameObject.FindGameObjectWithTag("Player");
        if (existingPlayer != null)
            Destroy(existingPlayer);

        GameObject player = Instantiate(playerPrefab, spawnPos, Quaternion.identity);
        DontDestroyOnLoad(player);
        playerSpawned = true;

        return player;
    }
``` though im not sure if the method is even being called

[whole gulch]

I think it should be in colormove

[whole gulch]

I think I need it for when I close the game and reenter no?

atleast it should do that

[rough granite]

just call the other save function instead of having to worry about the up keep of two identical functions

[whole gulch]

so I should delete savepoint.savegame?

[safe latch]

Guys, why does the gun and the background like glitch backwards and forwards and go from blurry to not blurry?

[rough granite]

lets not post the same thing in multiple spots

[safe latch]

i didn't know which place to post it in

[hallow sun]

@whole gulch Add some Debug.Logs() on OnSceneLoaded and SpawnPlayerRoutine (GameLoader.cs) it has many Debug.LogWarning s but none are being used?
Very suspicious, i googled it and some people report OnSceneLoaded doesnt trigger for them so maybe thats the problem.

[naive pawn]

then post it in 1 place and move if needed, don't crosspost please.

[safe latch]

i gotchu chieftonus prime

[whole gulch]

CameraManager - https://paste.ofcode.org/UKHavNAmwAcvhZP57MDLmV
GameStateManager - https://paste.ofcode.org/SSbCSuk4EA7izVkjY2etTZ
PlayerBootstrap - https://paste.ofcode.org/4mf4CzZN8Fchj72cKUVkiv
GameLoader - https://paste.ofcode.org/BTZrZmpgQf6dGapz5zptHd
ColorMove - https://paste.ofcode.org/KjcYTSVdNSvxF6Tq9CjcKB
PlayerController - https://paste.ofcode.org/DGjVLmR9L8iNhiLhrWev3C
SavePoint - https://paste.ofcode.org/6pF59HMgLLWAJyneuUUYvm
PauseMenu - https://paste.ofcode.org/PdPrX5rjfC7twTQKNc2nCf
Attack - https://paste.ofcode.org/7gTgMzLLVqjHRZqCnWBsuH
Damagable - https://paste.ofcode.org/39fS6xZaCybLG7rc5DPLUjJ
ScreenFader - https://paste.ofcode.org/a9tcXYQQV3XMxFbkb5eW7z
TouchingDirectrions - https://paste.ofcode.org/36HDNT5hAAbDyAc84cnCWGD

there are most of the scripts, the ones that I think may have anything to do with the problems

ik there are too much, srry in advance

[rough granite]

did the first 2 sites go under they both gave me a 502 error

[whole gulch]

I used the third one

[whole gulch]

what do u mean, srry

[hallow sun]

just add some to see which code is being used, for example if this is the one being used:
spawnPos = GameStateManager.instance.LoadPlayerPosition();
because there is no name, then the error is probably on LoadPlayerPosition

[whole gulch]

like this?

[rough granite]

sure but also add some to the save and load methods to see the data that is being saved and loaded when they are being saved / loaded

[whole gulch]

I don't think I made what u wanted

probably I'm being dumb rn srry

[rough granite]

i mean like like you add a
Debug.Log($"Saved player position: {position}"); in the save method and a Debug.Log($"Loaded player position: ({x}, {y])"); before the return new Vector2(x, y ; in the LoadPlayerPosition method

[hallow sun]

if (!string.IsNullOrEmpty(spawnName))
{
  GameObject spawnPoint = GameObject.Find(spawnName);
  if (spawnPoint != null)
  {    
    Debug.Log("Loaded position from spawnPoint");
    spawnPos = spawnPoint.transform.position;
  }
  else
  {
    Debug.LogWarning($"Spawn point '{spawnName}' não encontrado!");
  }
}
else if (GameStateManager.instance != null)
{
  Debug.Log("Loaded position from LoadPlayerPosition");
  spawnPos = GameStateManager.instance.LoadPlayerPosition();
}```
something like this

[rough granite]

whats não encontrado! :?

[hallow sun]

didnt find in portuguese i think

that one was already there

[rough granite]

u think ~_~

[whole gulch]

yes

[rough granite]

ahh

[whole gulch]

exactly

some of the commentaries are in portuguese

I really should start to be more consistent

well, I add it but nothing showed on the console

I tried to save the game, enter and reenter

[hallow sun]

oh so none of the code is being called

[whole gulch]

and change scene too

[whole gulch]

oh

oh no

I have 1 month to finish this and it is like, not half done yet💀

I'm cooked

[hallow sun]

did you add debugs to the OnSceneLoaded to see if at least that one is being called?

[whole gulch]

I added this

[solar hill]

Also make sure you didnt turn off debug logs in the console

[whole gulch]

idk if it is right

[hallow sun]

and make sure youa actually placed the script, sometimes we forget and this one doesnt seem to be a static Instance so it has to be in every scene

[hallow sun]

yeah, does this appear on console?

[whole gulch]

when I press play and enter the game this appears

[whole gulch]

I placed the script in two other scenes to test it out and when I tried to switch scenes this show up on the console

ok, so the non-existing character when switching scene comes from a poor configurated vcam, I'm trying to solve that now

[whole gulch]

if u guys or anyone has an idea of what I can do to solve it or wants to help dm me pls

[polar acorn]

What is the issue

This has been going on for a while I don't know what the actual question is

[whole gulch]

here it is

[whole gulch]

and here are the (i think) relevant scripts

[polar acorn]

So, is the player actually in the scene? If so, what is their position and what is it supposed to be?

[whole gulch]

when I change scene I have seen that the player is on the scene and in the position that the game starts, it should be on the position stated by the color move, for exemple, it should spawn in the object SpawnFromHollow

and the vcam isn't working in any scene other the the first one

[hallow adder]

is there a SavePoint-Hollow transform in the Blue-Pre scene? you should add more logs or learn to use breakpoints

[polar acorn]

So, the player is just always in the scene, not spawned in as a prefab? What's supposed to be moving it when the scene starts?

[whole gulch]

i don't think so, i think there is a SavePoint-Pre-Blue

[whole gulch]

what are breakpoints?

[whole gulch]

isn't it colormove's job?

or gameloader?

or playerbootstrap, I think it is this one

[polar acorn]

You kind of fired thirty scripts out of the window of a moving vehicle so if you have code doing something you should probably share the relevant stuff because I'm not going to read every single script you posted

What specific function is supposed to be moving the player at the start of the scene

[whole gulch]

spawnplayerroutine inside gameloader

it should be this one

i'm sorry for the confusion

[polar acorn]

So, the player is a prefab, and they're a DDOL object. This means anything in the scene that referred to the player in the scene is going to get recreated without that reference when the scene reloads.

If you want the player to be persistent, you're going to need to ensure nothing in the scene is getting that reference set in the inspector anywhere

And what object has this script on it? You're subscribing in OnEnable, is this object itself a DDOL or is it in the scene? If it's in the scene you're reloading, the OnEnable is going to run and add another subscription to sceneLoaded

[polar acorn]

Also, this warning shows that there's no spawn point named SavePoint-Hollow, so spawnPos is not set to anything

[whole gulch]

that's cuz it shouldn't go to savepoint-hollow

it should go to spawnfromhollow on the blue scene

idk why it tries to go there

[polar acorn]

If you're getting that warning message, that's what it's looking for.

You're logging spawnName

If it's logging SavePoint-Hollow that's the value you have for spawnName

[glad shore]

how should i set the velocity of my players rigidbody in a 2d movement script?

[whole gulch]

I think it should get the value for spawnName from the color move when it changes scene

[polar acorn]

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Rigidbody2D-linearVelocity.html

[polar acorn]

Is it? Use logs to check.

Instead of thinking about what it should do, check what it is doing

Follow the breadcrumbs. See where spawnName comes from, and see if that value is what you expect. If it's not, see where that is getting the value, and so on until you find where it's becoming something you don't want

[whole gulch]

idrk how to use logs

[polar acorn]

You log a value, and then you read it

[whole gulch]

ok, I changed a few scripts and it looks like it is solved

I think

[rocky wyvern]

I am using some non mono classes with delegates; is there any easy way to unsubscribe when those objects are deallocated by gc?

or do i just have to be really really careful and do it manually

hmm though actually now I think about it this is a nonsense question because it wouldn't be being collected by gc if it is still subscribed

nvm!!!

[golden canopy]

guys is there a way to get the normal from an overlapsphere

[teal viper]

Nope. You need a cast.

[stoic sage]

Is there some easier way of making a moveset without having a spaghetti of if (Input.

[crimson sluice]

Hey can anyone else tell me why c# isn't showing when I am trying to script something or is MonoBehaviour do the same thing?

[wild cove]

Monobehaviour is a vanilla script with a bit of stuff in it that uses C#, so yes, use monobehaviour. From what you said I think it is pretty much the same thing you're looking for.

[crimson sluice]

ok sounds good thank you

[cosmic dagger]

Just remove the MonoBehaviour inheritance and the default methods, then you're good to go . . .

[hardy wing]

Are there any resources on where to learn how movement scripts are written with kinematic rigidbodies?

[wild cove]

I'm trying to make this function in my game where when the drill (the square looking thing going towards the capsule) hits the mole (the player) it reloads the scene, but for some reason nothing is working when the mole goes towards it and is in the box collider.

[teal viper]

Google + middle school physics textbooks.

[ornate cosmos]

First try to use Debug. Log in OnTriggerEnter to output a message and confirm that the collision event method has been called. Additionally, if both of your objects have IsTrigger enabled and both have non kinematic rigid bodies with simulation enabled, then OnTriggerEnter should be callable. The OnTriggerEnter method is a method that can be successfully called as long as there are triggers in two game objects

[sour fulcrum]

one object

both don't need to be triggers

[ornate cosmos]

In this scene, both the Player and the Cube have a non kinematic rigid body with simulation enabled. The Player has gravity disabled and is waiting for the Cube to collide. They both have a collider, and as long as the collider of a certain game object is used as a trigger, the OnTriggerEnter method in the script on the Cube will be called

[sour fulcrum]

only 1 object needs a rigidobdy aswell

[ornate cosmos]

yeah, just cuz his scene he used 2 rigidbody, so i use 2 to show him how it works

[hardy wing]

i mean, that would explain the laws of physics. but that probably wont help solve collisions, solve slopes and what not 🤔

[teal viper]

You don't need to solve collisions. There's unity api for that, like casts, overlaps and rb sweep tests. These can be found in the api docs. Other than that, just Google. There should be plenty of tutorials and open source projects that can serve as a reference.

[hardy wing]

Well you would still need to solve collisions because casting rays, spheres, boxes and what not wouldn't make it so I don't be inside objects, it would just cast a ray. And then it's also about where to cast a ray from. Center? Top? Bottom? All? Maybe even more in-between? All these questions feel like it's a complicated topic. I'm interested enough to dive into that rabbithole which is why I'm asking if there's any resources which I could read into. I also considered using Godot's CharacterBody2D as a reference implementation to see how they deal with their collide_and_slide algorithm.

[teal viper]

What you're asking is basically how physics engines work. To put it simply, you have 2 options:

• detect collision ahead of time with rays/casts and adjust the object velocity such that it doesn't overlap with the hit object.
• detect and overlap after the collision happened, then calculate a depenetration velocity/displacement and apply it to your object.

If you want to learn down to Avery deep level might want to look for resources on physics engines independent of any specific game engine.

[hardy wing]

Mhh that makes sense. Sooo, are there any resources I can look into? Not sure if I can find some books, so maybe that. But from the kind of your responses I'm judging there's no well-known or popular thing.

[teal viper]

I don't know if there are any "good" resources. There are probably plenty of resources in general if you Google. This is not really something every unity developer has a sticky note on their fridge for.

[hardy wing]

I see, thanks 😊

[hardy wing]

Maybe I should also just focus on actual gameplay mechanics and how to deal with them with rigidbodies though I know that I definitely want to recreate some behaviour with a kinematic some day but maybe I don't have to deal with it right now just to keep motivation on game dev in general 😊

[cosmic dagger]

!code

[radiant void]

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/

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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.

[real thunder]

so you specifically ask about physics for a character?

[hardy wing]

If you want to simplify it to that, yeah.

[real thunder]

that's a very different topic from general physics

also pita

google rigidbody character controller or something

[celest depot]

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

public class RollRight : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    private bool isPressed = false;
    public GameObject Player;
    public float rollSpeed = 25f;
    private float rollInput = 0f;
    private float rollAcceleration = 2.5f;

    void Update()
    {
        if (isPressed)
        {
            // Smoothly accelerate toward forwardSpeed
            rollInput = Mathf.Lerp(rollInput, rollSpeed, rollAcceleration * Time.deltaTime);
        }
        else
        {
            // Smoothly decelerate back to 0
            rollInput = Mathf.Lerp(rollInput, 0f, rollAcceleration * Time.deltaTime);
        }

        // Move the player forward
        Player.transform.Rotate(Vector3.back * rollInput * rollSpeed * Time.deltaTime, Space.Self);
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        isPressed = true;
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        isPressed = false;
    }
}

[real thunder]

it really is annoying to make a character to properly interact with physics

yloing with CharacterController component is good enough for many if not most cases tho

which is not obeying physics but kidna interact with it

[celest depot]

I try to roll an object, but my coding seems off, the object roll too fast. Do i must delete the rollSpeed on the rotation part?

[hardy wing]

CharacterController is only in 3D.

[celest depot]

Ignore the // note

[sour fulcrum]

character physics in 2d is also a way smaller niche

[hardy wing]

That's why I'm currently rolling with Rigidbody2D with no gravity and frozen roztation.

[real thunder]

not sure if there is other choice

any issues?

[sour fulcrum]

at that point it's only really physics in regards to referencing unity's "physics" system. most of what you do is gonna be closer to smoke and mirrors than stuff comparable to real physics

[hardy wing]

Well, character controls are usually still gravity-restricted, collision-restricted and so on, even in 2D. And for that in Unity the only option is a rigidbody unless you want to do manual physics checks.

[sour fulcrum]

oh sure, im pointing this out so you might have a better idea of what to specifically look for

[hardy wing]

Yeah, for sure.

[sour fulcrum]

this might help https://gmtk.itch.io/platformer-toolkit

interactive game to showcase what goes into a standard 2d controller + source code accessible for nity grity

[hardy wing]

That looks cool, will look into it, thanks

[sour fulcrum]

googling/asking about 2d character controllers will get you further than how your initial question was phrased

best of luck

[real thunder]

I wonder if anyone ever found a code (if it's mathematically reasonable even) to have a Quaternion.SmoothDamp with a limiter and at the same time using spherical motion (like if I get it right if you go with Eulers the path would be not ideal)

trying to figure that out lead me to.... robotics forums? I am too silly

also am I getting it right that in modern animation software interpolation is not spherical so the path inbetween keyframes is not ideal?

[hardy wing]

Well, I mean, understanding how to code movement with a kinematic rigidbody (including collisions and what not) would be a good start because from there you can probably incorporate stuff like slopes and so on too.

Or at least is a start that can transition into it.

[real thunder]

are you sure you want a kinematic rigidbody

I mean idk how to properly do that

I would try to use a frictionless no bounciness no gravity non-kinematic rigidbody

[hardy wing]

Yeah, thats what I am using right now. I was just curious to see how stuff works if you do it manually, as I don't know it either 😄

Speaking of which, is it a good idea to do the frictionless thing as the default material or assign it separately for each? Feels a lot more predictable if everything has no friction from the get-go.

[real thunder]

slopes... you just check the angle of normal below you and slide (FSM of movement went from full control to something like sliding in a manner you like) if it's too bad

I mean that's what I would do

also to move along slopes without slowing down I project movement force onto normal

might be terrible for complex rough terrain

[real thunder]

are you sure it's what you want

I suspect you need some objects with zero fricion

and everything else having it

friction combine mode minimum works alright

so some things are slippery and controlled by the world while some ain't

[hardy wing]

Yeah but what should the default be

I think my character stuck to walls too much when jumping against it which I solved by making the player AND the wall have no friction

So I feel like the default being no friction would be better so I adjust it if I need some things to be stickier

[real thunder]

what's the difference between average and mean 🤔

[hardy wing]

i have no idea

[naive pawn]

rtfm moment...

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/PhysicsMaterialCombine2D.html

[errant breach]

Hello !

Im trying to get the healthbar. UI_healthBar, but for some reason, unity wont let me reference it, instead recommending that is use Ai_healthBar that simply exist nowhere in my program.

Do you know why such a issue happen ? Thanks !

[teal viper]

Do you actually have a ui health bar class?

Or struct.

[real thunder]

check if script name matches class name just in case

[errant breach]

OOOHHH THATS WHYY !!!

always thought it only used the script's name 😅, still learning i guess. Thank you !

[teal viper]

Script name is just the file name. It doesn't really matter in code.

[errant breach]

Alright, thanks !

[fading barn]

how do i send code blocks

or can i send screenshots

private void Start()
{
StartPosition = transform.position;
}
private void Reset()
{
if(ResetAction.IsPressed())
{
Debug.Log("Reset !");
transform.position = StartPosition;
}
}

[silk night]

wrap them in
```cs
// CODE
```

[silk night]

Your reset function is never called anywhere, I think you want to name it update (which is automatically called every frame)

also you want WasPressedThisFrame instead of IsPressed or it will fire every frame as long as you hold down your ResetAction key

[fading barn]

    {
        // Ground Check
        grounded = Physics.Raycast(transform.position, Vector3.down, playerHeight * 0.5f + 0.2f, whatIsGround);

        MyInput();
        SpeedControl();
        CheckForWall();
        StateHandler();

        // Handle Drag
        if (grounded && !isDashing) rb.linearDamping = groundDrag;
        else rb.linearDamping = 0;

        // Dash Cooldown
        if (dashCooldownTimer > 0) dashCooldownTimer -= Time.deltaTime;

        //RESET Player position to starting positiion
        Reset();
    }

i didnt send entire script cause its too long

[silk night]

you can send the entire script on a paste platform

!code

[radiant void]

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/

📃 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.

[silk night]

So what could still be wrong:

• ResetAction is not assigned
• ResetAction has no key assigned

[fading barn]

see it is

[silk night]

oh sorry didnt see the screenshot

[fading barn]

whats the difference between the two

no problem

[silk night]

That you never set the ResetAction in the player script

would be the other one

[fading barn]

will it work if i assign it in editor but not code

[sage mirage]

Hey, guys! I have an issue with a trigger box. For one reason, when my player enters the trigger box, it doesn't execute the code that I have written. I have tried to use debug.log to check if its actually executing the logic, but no. Here is my code:

{
    if (other.CompareTag("Player"))
    {
        lanternLightFlickeringTriggerCollider.enabled = false;
        StartCoroutine(FlickerDelay());
    }
}

private IEnumerator FlickerDelay()
{
    float elapsedTime = 0f;

    while (elapsedTime < flickerDuration)
    {
        lanternLight.intensity = Random.Range(minFlickerIntensity, maxFlickerIntensity);
        elapsedTime += 0.05f;

        yield return new WaitForSeconds(0.05f);
    }
    lanternLight.intensity = 0f;
}```

[fading barn]

i do have assigned it on code

tho

[silk night]

I can't know without seeing the full code, but I assume your ResetAction is just a serialized property?

[silk night]

So to confirm, it is not even going into the OnTriggerEnter method?

[fading barn]

yes its a private variable serialized. i have assigned it both in code and in editor

and both are same keys

r for reset

[silk night]

Can you show the full code and a screenshot of the inspector?

[fading barn]

yes

[sage mirage]

Sorry, when I did debug.log I saw the message player is on trigger box so it actually executes but it doesn't apply my random values of lantern light intensity

Its by default with a value of 2 that I have

even though I have declared the variables for min and max, as well as flicker duration

    private float minFlickerIntensity = 0f;
    private float maxFlickerIntensity = 2f;```

[fading barn]

test

[silk night]

did you maybe accidentially override the value in the inspector with 0 duration?

[sage mirage]

No because flicker duration is private

[fading barn]

`it is turning it into a txt file i think its too long

322 lines

[sage mirage]

let me send you a video clip

[silk night]

use one of the links above in the message I sent or https://share.sidia.net

[sage mirage]

of what is actually happening in depth

[silk night]

If you know how to debug I would do that or put a bunch of Debug.Log that outputs current values of things to check if they actually run and change

[fading barn]

https://share.sidia.net/cmm1xql8m0006ag3ddoekjs6h

[silk night]

do your other input actions work?

[fading barn]

everything else is working correctly

in the code

[silk night]

("<Keyboard/r>");

the R goes outside the <>

[fading barn]

oh

let me see whether it works now

why dont strings give compiler errors

[silk night]

because you are not supposed to compose an input asset like that usually 😄

you are better of actually creating an InputActionAsset and assigning that to the player

[fading barn]

so it still dont work

[silk night]

you are also missing the inputactiontype button

[fading barn]

wdym in old input system we had no other choice but to give axis name in string

[silk night]

for the reset action

[silk night]

yeah but this is the new input system that was created to fix those issues 😄

[fading barn]

found the culprit i think

no still not working

[sage mirage]

Hey! I spread out like almost everywhere debug. log and what I have noticed is that, the lantern intensity is actually changing for 2 seconds as expected but I dont see it change in the inspector and visually at all XD

[silk night]

even when adding the InputActionType in code?

[silk night]

are you sure you assigned the light in inspector / getting the right light?

[sage mirage]

you know maybe because I am using animations at one place for my lantern light?? Maybe animation actually affects how it works, when player enters the trigger box. Oh, I think thats the reason bro.

Because I have an idle animation for my light

[silk night]

if you are animating the intensity value it would override it, yes

[sage mirage]

which keeps my light at 2 by default

[silk night]

even if you are not changing it, but having a keyframe set it to 2 would block external changes

though that should be easy to fix, you can manually delete the keyframes of intensity from the animation

[sage mirage]

So probably I am going to create this flickering effect via code like I did and yes I am going to delete the keyframes and the animation for the flickering effect.

[errant breach]

Hey guys !
I got the error NullReferenceException: Object reference not set to an instance of an object
When i double click on the error, it brings me nowhere. I checked : Both my players and my enemy has all their option correct.
Do you know what it could mean ?

⚠️ the error is displayed even when i dont start up the game

As for the code, here is it :

https://paste.myst.rs/xxspt9xq

[ivory bobcat]

Unless you wrote some editor script, usually messages about Edge.WakeUp are false positives. Try restarting the Unity Editor?

[errant breach]

😅 thank !

[sage mirage]

Hey, guys! Can somebody explain please, what yield return null does actually? I was just wondering, in which cases do I have to use yield return null?

I have heard it waits for the next frame to proceed but cant understand the use case of it.

When and why to use it?

[midnight plover]

it basically returns nothing and keeps continuing the code. For example when you are waiting for a request or initialisation or what not, you could yield your async method and continue as soon as the check is done or aborted.

[sage mirage]

I can't undertand it bro, I mean I know what yield return new WaitForSeconds does but still cant

[wintry quarry]

It means "wait one frame then continue" when used in a coroutine

[sage mirage]

Yes but why to wait that one frame?

[wintry quarry]

For example if you want to do something every frame in a coroutine

You could put it in a loop

[sage mirage]

something is happening internally in the memory or what exactly?

[wintry quarry]

Not sure what that question means

[midnight plover]

while(myManager.isNotThereYet)
yield return null;

basically means, wait for something before using it for example. This way you can "pause" methods until everything is set up. Just one example

[keen dew]

Surely you've used Update a lot? Update does something once every frame. If you want to do that same thing in a coroutine, you can do it with a loop and yield return null

[midnight plover]

your async method runs until its done. If you want to pause it, you gotta put it in a loop of doing nothing basically

[wintry quarry]

The Unity engine sees that you yielded null and says "ok I will continue executing this coroutine next frame".

[sage mirage]

So, I can think of it "Wait for something before using it"?

[wintry quarry]

It's literally just waiting one frame it's not that deep. There are infinite reasons you might want to do that.

[midnight plover]

that was just the example in context. The line, you were asking about, is just, wait one frame of execution then keep going in code, what ever that is.

[sage mirage]

so instead of seconds its frame right thats the difference from yield return new waitforseonds?

[wintry quarry]

Yes

[sage mirage]

its only one frame

or more than one?

[wintry quarry]

One frame...

[midnight plover]

you are making more out of it than there is to that topic. Do not overcomplicate it in your head

[sage mirage]

I just wanted to really understand where we use it?

[wintry quarry]

Whenever you want to wait a frame in a coroutine.

[sage mirage]

lets say a light flickering

it can be used for it?

[wintry quarry]

It can be but probably not

[sage mirage]

and why

[wintry quarry]

That's likely more time based

Although you may still use it there and set the brightness of a light based on an animation curve

So yes it could be used there

The most common thing would be smoothly animating the position of an object over time. To do that you need to set the object position once per frame

[rich adder]

Same way you'd use Update usually.. but in a coroutine

[real thunder]

seek for different homing missle approaches lead me to some github and stuff and...
am I not getting something or this code shouldn't work?

void FixedUpdate(){
        
        float navigationTime = (target.position - transform.position).magnitude / speed;
        Vector3 los = (target.position + targetRb.velocity * navigationTime) - transform.position;

        float angle = Vector3.Angle(rb.velocity, los);
        Vector3 adjustment = pValue * angle * los.normalized;

        rb.velocity = rb.velocity.normalized * speed;
        var target_rotation = Quaternion.LookRotation(adjustment);
        transform.rotation = Quaternion.RotateTowards(transform.rotation, target_rotation, turnRate * Time.deltaTime); 

        rb.velocity = transform.forward * speed;
    }

like, LookRotation only care about a Vector direction, am I getting it right?
pValue presumably meant to adjust leading

I mean the code does work... kinda.... not sure that leading works

[errant breach]

Hello !

I want the player to shoot, and i want to pass the projectileSpeed value to the projectile (with various other values). The player has different shoot so i cant really ignore that. But i have this error, do you please know how i can fix it please ? Thanks !

[teal viper]

I'd suggest to go over C# basics. newSpawnedObject is not an object of your PlayerProjectile type.

[real thunder]

Trying to read the writer's mind, I suppose the plan was to use

Vector3 adjustment = Quaternion.AngleAxis(pValue * angle, Vector3.Cross(los, rb.velocity)) * los.normalized

[rich adder]

PlayerProjectile could be GameObject, but GameObject is not PlayerProjectile

[naive pawn]

you should type the prefab field and the result of Instantiate as the desired component type instead

[real thunder]

you can instantiate something as a MonoBehaviour instead of GameObject?

[polar acorn]

Yes

[real thunder]

I was getting this component for nothing all this time

[polar acorn]

Yes

[naive pawn]

a lot of the time you generally don't need to/shouldn't use GameObject as a serialized reference or for passing around

since you generally care more about components than gameobjects

[shrewd sluice]

Hi need help with a couple of things...

[naive pawn]

just ask , no need to lead with that

[shrewd sluice]

Im pretty sure I can make the. Ui with udon, but cards in a 3d plain field with shuffling is kinda difficult and can't find any videos or assets to help with it x.x

So far I have been using udon unity ._.) because it's for vrchat

[polar acorn]

!vrchat

[radiant void]

Join the growing VRChat community as you explore, play, and create the future of social VR! https://discord.com/invite/vrchat

[shrewd sluice]

And quest version

[shrewd sluice]

Banned

Idk why

Still it's unity. So it should work anywas

Udon is just an, hehe, addon

[polar acorn]

Then it's going to be difficult for you to get your question answered there

You're probably not going to find much help with their SDK here.

[grand snow]

Probably not but the question asked is super vague anyway

God knows what happens in the vr chat server

[naive pawn]

the people who are able and willing to help with vrchat would be in the vrchat server

[shrewd sluice]

But it's unity no?

[real thunder]

I mean I can also start asking guides for Unity games here in that regard

what question you got anyway

"cards in a 3d plain field with shuffling is kinda difficult" like... how does that relate to Unity

"Udon is a programming language1 for VRChat worlds. Scripts can interact with scene objects, players, synced networked variables, and more. Udon makes your world come to life!" ugh welp yeah you are out of luck

asking about it here is about as useful as asking guides for a random Unity game

[polar acorn]

People here don't know what is and is not possible in VRChat. You can ask your question but if you get an answer you can't use we can't really do anything about that.

This is why you should ask it in the Udon section of the VRChat server. They're familiar with the restrictions of the language and can actually answer you

[shrewd sluice]

Oh well that makes sense

[shrewd sluice]

Yeah well both udon banned me after asking such question and vrchat idk why they banned me x.x

Like literally the only thing I typed in the udon discord was some help with stuff and fell asleep, then bam banned like wth

[polar acorn]

That's something you'd need to ask them

[real thunder]

rules saying you only can do that at proper channels?

[shrewd sluice]

Can't break the rules if you don't know them

[real thunder]

no, you can do that

besides as I checked they shove "read rules" as one of non skippable things on joining

[hushed canyon]

Hey guys. I'm trying to make a 2D game like Super Mario but its not working out great. Right now I have the Movement set up, an Inventory but not the actions to get collected items into it, and thats where I'm stuck, I followed a video to help me make scripts so I could grab items but Its not working. The item just rolls away. And if I make it kinetic (so it doesnt move) I can literally stand on it like an object and it never gets picked up by me. Also tried activating Boxcollider2D --> IsTrigger ON but then it fell through the ground.
This is the video: https://www.youtube.com/watch?v=e7-EJd5dQgQ
Please Pm me if you could help. Id be reallllly greatful. This is for a school project.

[naive pawn]

"your honor i'm not guilty of theft, i don't know the law"

[naive pawn]

we don't do DMs here, sorry.

it sounds like you might want to temporarily control the other object when you pick it up

[errant breach]

Hello ! My game is crashing because one canva (prefab) doesnt have the camera. But i cant drag and drop the camera to the prefab. (because it's not on the list)

I tried putting one prefab and the scene, setting putting the camera and then Apply changes (overrides) but the "camera" field is still empty. Same if i try to create a new prefab with the camera put...

How can i avoid this problem please ?

[hushed canyon]

its alrighttt

[hushed canyon]

What do you mean "temporarly control" it? It just needs to get picked up .

[naive pawn]

you can't reference scene objects in a prefab, since the prefab isn't in the scene.

are you instantiating this prefab at runtine, or do you already have an instance in the scene?

[naive pawn]

well, you have to actually pick it up?

it rolling away just sounds like you're walking into it

[hushed canyon]

It just needs to get in my inventory at the end.

[hushed canyon]

Yea, when i walk into it.

[naive pawn]

so remove it from the world when you pick it up?

im confused what the issue is here

is the issue that the object is solid?

or that it's simulated by physics?

[hushed canyon]

Basically when I toch the object It needs to get "picked up" and dissapear, and later go in my inventory that I set up but I'm not that far yet. Anyways, when I touch the object it just slides/rolls away and doesnt get picked up or destroyed.

[hushed canyon]

Don't think so... I've never coded before, this is my first time. Im a complete newbie following a youtube tutorial.

[hushed canyon]

The object also has BoxCollider2D and ridgidbody2D if thats what you mean.

[naive pawn]

and do you want the object to be completely static, or what exactly?

[errant breach]

I already have an instance in the scene ! And okay !

[naive pawn]

assign the camera to the instance in the scene then

[hushed canyon]

Yeah, static (just be on the ground) and when you step to it (touch) it gets picked up and dissapears from the world. And later placed in your inventory but thats another tutorial video.

[rough granite]

Dont give it a rigidbody then

Only one object in the collision process needs one and if the player has one the object wouldn't

Or if the player doesnt have one for whatever reason give it one but make it a kinematic/static (say kinematic cause i dont remember if static has collision detection)

[hushed canyon]

Just tried it, now It just doesnt move at all and I still cant pick it up.

[rough granite]

You just said you didnt want it to move, bruh

[hushed canyon]

Yeah, but It still needs to be picked up and when its picked up destroyed

[rough granite]

Is the handling of position when being picked up done through code? Or from collision?

[hushed canyon]

I'm so sorry but I totally dont understand what you mean... I made 2 codes, 1 called Item and another InventoryManager.
This is the 'Item" code:

And the InventoryManager:

I put the "Item" code into the item I wanted to "collect"

[rough granite]

Neither of these have anything about moving when picked up ~_~

[hushed canyon]

This is literally what the video: https://www.youtube.com/watch?v=e7-EJd5dQgQ Told me to do...

[rough granite]

Right im not watching a video but that isnt my problem you talked about how not having a rigidbody makes it so when you go to pick it up it doesnt get physically picked up but neither of the two codes you have; have anything about controllering it's position when picked up

[hushed canyon]

Oh alright, thanks for trying to help tho!

[rough granite]

I mean you are the one not giving enough information

One minute you are telling me you dont want something to move then the next you are

[hushed canyon]

Oh I'm sorry for that. The problem is that I'm completely new in the coding thing and dont know how anything works.

[hushed canyon]

The thing is that it doesnt matter if it moved or not. I just need it to be collectible.

Like the coins in Mario Bros

[rough granite]

Then the second thing i gave the first time should work

Add the rigidbody back but make it kinematic

[hushed canyon]

Oh alrightttt!! thanks!!

[stoic sage]

Did a code without just following a tutorial
Feels good

[brazen river]

Hi

[sage mirage]

OMG granny is here XD

My childhood nightmare is here XD

Hello btw

[brazen river]

I'm trying to crack the Granny Legacy Il2cpp

[sage mirage]

You can player granny in your phone all of them

1, 2 and 3

[brazen river]

Unofficials

[sage mirage]

They are paid only on steam

no the original

from DVopers

[polar acorn]

Decompilation is not allowed here

[brazen river]

1 ,2and 3 are old

[sage mirage]

which one?

do you want?

Legacy I dont know it

[brazen river]

Well the Granny 2 is better than all

[sage mirage]

I think the first one and second are the best

and third

sorry

I really want to contact the developers of the game

[naive pawn]

uhh this seems kinda off-topic...

[sage mirage]

probably thats what I am going to do cuz I would like to collaborate with them

[polar acorn]

Also this is not a social server, if you want to talk about the games take it to DMs

[brazen river]

This is a new remake made by OmGi.

It is horror game channel of Granny.

[sage mirage]

sorry guys it was his pfp

ok send me DM

[supple flume]

how can i make my object face another object
when i try to use the LookAt method x and y are the only modified rotaions and it causes it to disappear

[naive pawn]

is this in 2d or something?

[supple flume]

2d

ik why it disappears

idk how to fix it

[frail hawk]

it disappers because it use the forward axis which is z in 2d

[naive pawn]

LookAt makes the forward vector point that direction, but you need the forward vector to be perpendicular to the camera in 2d

[supple flume]

how to do that

[naive pawn]

just don't use LookAt

change the up/right vector of the transform instead

provide it a direction vector

[naive pawn]

(depending on which vector is the "forwards" of the object)

[supple flume]

how is that done im so lost lol

[naive pawn]

transform.up = newDirection

[supple flume]

and the newDirection is a vector of the targeted object right?

[frail hawk]

to

[supple flume]

transform.up = new Vector2(center.position.x,center.position.y);
this line of code is not working

[frail hawk]

what is the error?

[supple flume]

transform.up = (transform.position - center.position);
This worked for me
what was the problem is...
i was chaning position after rotating

[naive pawn]

that's the opposite direction

[supple flume]

didnt pay attention lol
i put center first right?

using base square so didnt notice

[naive pawn]

yes, the direction is the target position relative to (ie, minus) the current position

[supple flume]

quick question
for a towerdefense
do yall recommend Rigidbody movement or vector movement
performance wise

[frail hawk]

if you want proper collision detection and physics such as gravity etc, you´d have to use a rb

[ivory bobcat]

What do you mean by vector movement?

[supple flume]

transform.position method

[ivory bobcat]

Ah, teleporting using the Transform component. If you're planning to roll a ball or fly a rocket, RB would simulate those pretty well. If you're only needing gravity and some complex or strict movement system, you could opt for a kinematic rb and implement the moving yourself with the kinematic method.

[polar acorn]

Do you want physics or teleportation

[supple flume]

i just want straight line movement

[polar acorn]

Well, do you want physics or teleportation in a straight line?

[verbal dome]

It's not really a performance question, it just depends on what you need

If you need units to push each other then you probably want to use a dynamic rigidbody

But for a tower defense I'm not sure if that's needed

[supple flume]

yeah i dont want them to push each other
ill stick with MoveTowards for now

i have a question
lets say there are lots of objects and i want to print the name of the closest one within a certain range
i thought of making a list and putting all the objects within that range and compare who is the closest to print the name of it
is this the proper approuch or is there a simpler method

[cunning rapids]

I'd say the simplest is just to compare the magnitudes of the distance vector for these objects

[supple flume]

and how can i keep track of them?

[cunning rapids]

Wdym "keep track of them"?

[supple flume]

the magnitude of all the objects within that range

[uncut kayak]

I get the Error Message: MissingMethodException: Method 'PlayerController.OnMove' not found. when Trying to use Unity's New Inputs System

this is how I set up my code:

using UnityEngine.InputSystem;
public class PlayerController : MonoBehaviour
{
    public float movementSpeed = 10.5f;
    public Rigidbody2D rb;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
    }

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

    public void OnMove(InputAction.CallbackContext PLEASE)
    {
        Debug.Log(PLEASE.ToString());
    }
}

[wintry quarry]

WHen you're using Broadcast Messages mode on the PlayerInput component, there should be no parameter or only an InputValue parameter,
the CallbackContext parameter is wrong

[cunning rapids]

Vector2 distanceVector = target.position - transform.position;

[supple flume]

but that only tracks one doesnt it
ill have tons within that range

[polar acorn]

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Vector3.Distance.html

[cunning rapids]

Yes, I know. That was just for getting the vector itself. If you need both the vector itself and the distance then you can call Vector2.magnitude()

[cunning rapids]

What you can probably do is have some circle or sphere around the player and any of a specific object that is within said circle you track the distance

[uncut kayak]

Oki but when I test it out while It was working it only gave me back inputvalue
when it should be -1 or 1

[supple flume]

How do i return the object with this??

[cunning rapids]

You can reference a specific tag and assign the appropriate tag for the objects

[polar acorn]

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Physics2D.OverlapCircle.html

It returns a collider.

[supple flume]

im reading them rn

I mean the collider2d
how can i use that to return the object

i just refer it o it as var name.gameobject?

[cunning rapids]

The circle itself is a collider. Then just use collidername.CompareTag("Tag name")

[supple flume]

enemy isnt getting assigned reason why?

[cunning rapids]

For example

Collider2D circ = Physics2D.OverlapCircle(transform.position, radius);

if (circ != null && circ.CompareTag("Object") { /*do something*/ }

Then assign the tag "Object" to the objects you wanna track

[slender nymph]

is the object you are trying to find on either layer 2 or 3?

[supple flume]

but i specified it to be layer 6

[cunning rapids]

Tags are better than layer imo anyway

[slender nymph]

no, you passed 6 as the layer mask, which is 0b110 in binary, or a mask for layers 2 and 3

[supple flume]

which is a lyaer i made

[cunning rapids]

It's faster and cleaner

Depends on the use case obv

[slender nymph]

it's literally not faster nor cleaner to use tags instead of a layermask

[cunning rapids]

Faster to code (my example), ergo its cleaner

Rather than passing layermasks for the overlapcircle

[slender nymph]

it's literally more clutter, and it is easier to just expose a LayerMask variable to the inspector and pass that to the overlap circle call than it is to use a separate tag check

[verbal dome]

What if it finds two objects, returns the first one, and that one does not have the tag? And the second one actually has, but you never get to check it

[supple flume]

this is such a weird way of declaration

[slender nymph]

no, you just don't understand what bitmasks are
https://unity.huh.how/bitmasks

[supple flume]

well i made a var for layermask and assigned it manually in editor and works

[cunning rapids]

Check each collider and compare tags

[slender nymph]

overlapcircle is returning a single one though

[cunning rapids]

It's the same with layermasks

[slender nymph]

it's literally not. a layermask does the filtering as part of the physics query, and not separately after the fact

[verbal dome]

Typically you use a LayerMask from a serialized field or get it witih LayerMask.GetMask().
LayerMask casts (converts) to int

[supple flume]

so its just a binary counter?? and the number i give is the co-existing number of the binary formation?

[cunning rapids]

Yes, I know. But if you're filtering for a specific type of object why would you filter for a specific layermask in the first place

No denying that it can be useful but idk if that's necessary here

[slender nymph]

because you want to only find specific objects so those objects should be on a specific layer

[supple flume]

so if i give it 9
ill get the first and the fourth layer? am i correct

[cunning rapids]

You can check colliders and just assign the appropriate tag for the object, though?

[slender nymph]

so you create extra work for not only yourself but the runtime. and you somehow think that is cleaner and faster?

[cunning rapids]

It's faster to write and unless you have a shit ton of stuff the performance gain is negligible

[supple flume]

is it possible to remove a value from a list? cause in most lists and programming languages they dont allow deletion of a value

[slender nymph]

if it is a list and not an array then yes

[polar acorn]

It's not. Tags are hashed strings which are compared for equality. Layers are bitmasks done with boolean operators and thus require only a single CPU cycle to compare instead of multiple function calls

[cunning rapids]

They do

[polar acorn]

Instead of using numbers, make a LayerMask variable containing the layers you want

[slender nymph]

it's literally not faster to write, that's the whole fucking point. you are writing an extra check, as opposed to passing a single extra argument. that's the definition of not faster

[supple flume]

i did
but to understand it is what i said correct?

[slender nymph]

read the page i linked about how bitmasks work to understand them

[polar acorn]

It will get you layer 0 and layer 3

[cunning rapids]

OverlapCircleAll?

[supple flume]

OHH yeah i forgot we start 0 not 1 my bad

so what i said is partially correct

[slender nymph]

so now you're using a different method and still writing an extra check

[cunning rapids]

Are we not using tags?

If not then I'm wrong

[polar acorn]

Why use tags when you can use a layer mask

[slender nymph]

my whole point here was that comparing tags is in no way faster or cleaner than just filtering the query using a layermask first

[cunning rapids]

Fair enough

I thought the setup you were suggesting was

Assign tags for objects --> then assign the layermask for the object --> filter layermask --> comapre tags

My bad

[slender nymph]

nobody said "use binary assignment" whatever the hell that is supposed to mean. we explicitly said to expose a LayerMask variable to the inspector and use that

[uncut kayak]

Oki then when Should CallbackContext be used?

[polar acorn]

When subscribing to an event in code instead of using the PlayerInput component

[wintry quarry]

When using Unity Events mode on PlayerInput or when manually subscribing to the events in code.

[supple flume]

quick question
when i remove a value from the list and will the ones above it go down by 1??

[wintry quarry]

the indices of all the other elements after it will be reduced by one yes. They shift over

[supple flume]

thank you

[slender nymph]

that is why List.Remove is an O(n) operation and the larger the list, the slower the operation will be when removing things nearer index 0. though for the most part you won't really have to worry about that so much

[cunning rapids]

Just out of curiousity is there a way to reduce the time complexity

[slender nymph]

of List.Remove? no. Lists are just arrays where things move around sometimes (notably when you insertat or remove)

[cunning rapids]

I meant more generally if you have a set and you wanna remove an element from said set

[slender nymph]

anything after the InsertAt or Remove(At) call needs to be shifted up/down appropriately which is where that time complexity comes from

[cunning rapids]

If it's ordered you can do a binary search but... it'd have to be ordered

[polar acorn]

If you find a way to, there's probably a PhD in it for you

[wintry quarry]

If you don't care about the order of the elements you can use the RemoveAtSwapBack approach - where you take the last element of the list and put it in the removed slot, and therefore you basically are always removing from the end of the list which is O(1)

That's what NativeList lets you do: https://docs.unity3d.com/Packages/com.unity.collections@0.0/api/Unity.Collections.NativeList-1.html#Unity_Collections_NativeList_1_RemoveAtSwapBack_System_Int32_

But often with a list you care about the ordering

[cunning rapids]

Ooh pretty cool lol

[wintry quarry]

but if you care about ordering and don't want any gaps, you can't help it

another approach is basically nulling the element out instead of removing it - but then the index of the list elements gets weird and you have gaps you need to skip over when iterating

so.. .everything is a tradeoff

[cunning rapids]

O(n) isn't really a big deal anyway to be fair unless you have TONS of objects, in which case other optimizations should be at play regardless

[slender nymph]

this is why there are many different types of collections and using the right one for what you are doing is important.
if you only ever care about what was most recently put in, you should use a Stack, if you only care about the last object put in then a Queue, if you want something you can index into and resize as needed a List, and a fixed size with indexing an Array, etc

[naive pawn]

no, it's a list of booleans

[supple flume]

is there away to change the values of a vectorn into a whole number??

[cunning rapids]

Are there other methods where it's still O(n) but in practice it's faster?

[supple flume]

so i can compare which is bigger

[slender nymph]

why do you need whole numbers for that? you do know the comparison operators work for floats, right?

[wintry quarry]

to compare which vector is "bigger" you usually want to compare their magnitudes

that's the "length" of the vector

[naive pawn]

remove from tree has a complexity of O(log n)
remove from hashset has a complexity of O(1)

[wintry quarry]

otherwise it's not clear to me what you mean by "which one is bigger"

[supple flume]

i just meant like one number not multiple values lol

[wintry quarry]

yes take the magnitude

[cunning rapids]

magnitude

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Vector3-magnitude.html

[naive pawn]

(that's not what whole numbers are btw, whole numbers are integers.)

[supple flume]

so this is a correct statement

[wintry quarry]

and if you just want to know which one is better - you should compare sqrMagnitude

[slender nymph]

then yeah, use the magnitude or sqrMagnitude if you want a slightly smaller performance impact

[supple flume]

realised to late yeah

[wintry quarry]

I don't know if this is correct because IDK what you're trying nto test with this statement

[supple flume]

closest object in a list

[naive pawn]

then no, it's not correct

[cunning rapids]

Then use the distance method instead

[wintry quarry]

You should be doing Vector3.Distance(A, B) and comparing the distances

what you're doing right now is not right, no

[cunning rapids]

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Vector3.Distance.html

[slender nymph]

subtract the vectors and get the magnitude of that. or just Vector3.Distance which does all that for you

[naive pawn]

a - c > b - c is the same as a > b. you're just comparing the magnitudes there, so just whichever is farthest from the origin

subtracting position vectors essentially changes the origin point

[cunning rapids]

Yeah, exactly. One point with your code is that it only subtracts the magnitudes which doesn't take direction into account which is important for this case (Talking to @supple flume here, just backing you up)

[polar acorn]

https://docs.unity3d.com/6000.3/Documentation/ScriptReference/Vector3.Distance.html

[supple flume]

what abou tthis

[wintry quarry]

yes but you can optimize your code to do fewer calculations than this

but it's correct

[supple flume]

how so

[naive pawn]

i feel like a few sqrts is worth the readability here tbh, unless this is a hot codepath

[slender nymph]

pretty sure it's in a loop in update so pretty hot

[supple flume]

its in void Update yes

[naive pawn]

ah. just got here, mb.

[wintry quarry]

something like:

float closestDistance = float.PositiveInfinity;
Transform closestEnemy = null;

foreach (Transform enemy in enemies) {
  float distance = Vector3.Distance(enemy.transform.position, transform.position);
  if (distance < closestDistance) {
    closestEnemy = enemy;
    closestDistance = distance;
  }
}```

[supple flume]

in a loop

[supple flume]

more readability hell yeah

[wintry quarry]

yes also that

[naive pawn]

ah, i see

[wintry quarry]

having very long lines with lots of functions etc is hard to read and often less performant because you tend to not be using intermediate variables

[naive pawn]

i was missing a lot of context lmao

[verbal dome]

I might add that you likely don't want to update the target every frame anyway. It's unnatural, chaotic and can be jittery if boucning between targets
For example doing it a few times in a second usually works

[supple flume]

should this work if i replace my forloop?

[slender nymph]

fwiw though this can probably be moved to FixedUpdate since it's not like physics is updating between FixedUpdate calls anyway, and this seems to be a TD game so the towers probably aren't moving their positions either, so the OverlapCircle call would be returning the same information for however many frames between FixedUpdates anyway

[supple flume]

cause i just realised this doent work cause it will only loop once

[wintry quarry]

yes approximately but I haven't seen your full code so I can't tell for sure if this syntax is all correct

[naive pawn]

why would it only loop once? is size just a constant 1

[wintry quarry]

this enemies.Add(...overlapcircle..) thing you're doing looks really fishy to me

and yeah where does size come from here?

[supple flume]

using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;

public class Raduis : MonoBehaviour
{
    public Vector2 vector;
    public Transform center;

    
    public LayerMask mask;
    public float size;

    public Collider2D closest;

    public List<Collider2D> enemies = new List<Collider2D>();

    public float rot;
    
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
        //if (Input.GetKeyDown(KeyCode.Space))
        //{   
            //vector = Random.insideUnitCircle.normalized * 2f;
            //Debug.Log(vector);
            ////transform.position = vector;
            
            
        //}
        if (!enemies[0])
        {
            closest = Physics2D.OverlapCircle(transform.position,2,mask,0,6);
            enemies.Add(closest);
        }

        
        
        if (enemies[0])
        {
            enemies.Add(Physics2D.OverlapCircle(transform.position,2,mask,0,6));
            for(int i =0; i < size; i++)
            {
                if(Vector2.Distance(closest.transform.position,transform.position) > Vector2.Distance(enemies[i].transform.position, transform.position))
                {
                    closest = enemies[i];
                }
            }
            
            
        }

        
    }
}

this is the code

[cunning rapids]

Don't use lists here. OverlapCircle returns colliders. filter the layermask(s)

[slender nymph]

should be passing the list to OverlapCircle so it can fill it in with all of the nearby results

[wintry quarry]

there's no need to manually add things to this list

use the override that dumps the results in the list

[supple flume]

im not manually doing it

[slender nymph]

they should still be using a list, actually. or a pre-allocated array

[supple flume]

it adds anything that comes in range

[slender nymph]

they were referring to the .Add call

[naive pawn]

why is size a float

[supple flume]

idk man sometimes i autopilot

[wintry quarry]

you are - you're getting an allocated array from the OverlapCircle call and then adding it manually to your list

you should use the version of OverlapCircle that dumps the results directly in your list

[cunning rapids]

I haven't coded in Unity for a while but doesn't OverlapCircleAll handle that

[wintry quarry]

https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Physics2D.OverlapCircle.html see the third overload

[polar acorn]

if (!enemies[0])
        {
            closest = Physics2D.OverlapCircle(transform.position,2,mask,0,6);
            enemies.Add(closest);
        }

This is either never going to run at all or produce an out of bounds exception. There's no point to including this

[slender nymph]

OverlapCircleAll returns a new array each time and is therefore worse than what is being suggested to them

[cunning rapids]

I see

[supple flume]

i need to know the place of the first closest object

and !enemies wont have an assigned value at first so the first time it does it will assign it to closest as well

[supple flume]

interesting

[slender nymph]

using the overload of OverlapCircle that populates an existing collection with the results means that there are fewer allocations, and with this happening in Update it will put far less pressure on the garbage collector

[polar acorn]

If enemies contains nothing, then enemies[0] will be an out of bounds exception.
If enemies contains anything, if (!enemies[0]) will be false and not run

The body of this if statement literally will not run

[supple flume]

oh

[cunning rapids]

Yes, I got it. Thanks for letting me know tho

[supple flume]

i tried following
why is this not true
or do i put the assigning of the var in here?

[supple flume]

how do i check if the list is empty or no?

[slender nymph]

you need to use a ContactFilter2D rather than those two middle parameters

[polar acorn]

Check the count

[supple flume]

oh yeah thank you

[slender nymph]

also this overload of OverlapCircle will return the number of objects it found so use that rather than the count of the list

if you just blindly loop through the list populated by OverlapCircle you're going to run into invalid results because it doesn't clear the list, it just overwrites up to the index it needs to

[supple flume]

so how can i compare which is closer

[slender nymph]

you loop through the list up to the index returned by the method call

or rather the count returned by the OverlapCircle method call

[supple flume]

how do i do that

[slender nymph]

so you know how to use a for loop, right? and you know how to store the return value from a method?

[supple flume]

yes

for both

[slender nymph]

so put that knowledge together

[supple flume]

ok before that help with this
if i dont put [] i get an error what should i put in

[naive pawn]

putting in [] also gives an error, so clearly not that

[slender nymph]

stop using enemies.Add there, and i already told you why that happens. and also you get an error when you do put [] there because that's even more wrong

[polar acorn]

It returns an int.

You pass it the list.

[supple flume]

bruh i thought i deleted it

i mustve CTRL z it

[polar acorn]

enemies is not a list of ints, so enemies.Add(<thing that returns an int>) is not valid

[supple flume]

yeah works now

[slender nymph]

make sure to actually store the returned int from the OverlapCircle call like we just discussed

[supple flume]

will try to do that

[naive pawn]

i mean tbf you don't even really need to use the return with the list overload, you could just foreach over the list

[slender nymph]

doesn't the list not get cleared and just overwritten?

[naive pawn]

...i don't see how those 2 are different

[polar acorn]

If the list is too small it will be resized. If the list is too big, it will not overwrite the unused values

[slender nymph]

so when fewer results are found they wouldn't want to be checking the invalid ones at the end of the list

[polar acorn]

So, you do need to use the int result, otherwise you'll have garbage data at the end of the list

[naive pawn]

ah, i see what you mean. you could just clear the list beforehand though, no?

that's what i usually see, i feel like

[polar acorn]

Yes, but that'd defeat the purpose of optimizing the clear out

[naive pawn]

i think i lost the plot. aight

[polar acorn]

Clear isn't free, it causes garbage collection. By not doing the clear, it prevents needing GC

[naive pawn]

i don't think that's true

[supple flume]

enemes is no longe rgetting a value

[slender nymph]

does it cause GC though? I know it's an O(n) operation and would be slower than just using the returned int, but it wouldn't get resized when cleared

[supple flume]

in editor

[slender nymph]

well, any GC other than releasing references to destroyed objects, i mean

[slender nymph]

any particular reason you're using depth for that? and are the objects you are trying to find within that range?

[polar acorn]

Try logging the count after this call. If it's still empty, then there's nothing in the overlap range

[naive pawn]

they are not using depth there

the 2 is radius

[supple flume]

cause i tried it wo it and didnt work so i thought it was the probvlem and enabled it

[slender nymph]

in the contact filter they are

[naive pawn]

ah, mb. i read that as a layermask in the code

[polar acorn]

You're right, they wouldn't get GC'd unless the list was the last thing that referenced them, which can't be the case because it's a component

[naive pawn]

making it filter more wouldn't solve the problem of it not detecting anything

[supple flume]

they move till they sit ontop of the object so yeah

[slender nymph]

that doesn't mean they are within that range of depth you are checking. depth isn't distance from the object, it is distance along the z axis

[supple flume]

i disabled depth

i did depth just to make sure its missing wasnt the problem

i disabled it again

[slender nymph]

then show the actual object(s)

and ideally the entire snippet of code

[supple flume]

using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;

public class Raduis : MonoBehaviour
{

    public Transform center;

    public float size;

    public Collider2D closest;
    public ContactFilter2D filter;

    public List<Collider2D> enemies = new List<Collider2D>();


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

    // Update is called once per frame
    void Update()
    {
        
        //if (Input.GetKeyDown(KeyCode.Space))
        //{   
            //vector = Random.insideUnitCircle.normalized * 2f;
            //Debug.Log(vector);
            ////transform.position = vector;
            
            
        //}

        Physics2D.OverlapCircle(transform.position,1,filter,enemies);

    }
}

the code

the enemy object

[slender nymph]

you have IsTrigger there, but Use Triggers is unselected in the ContactFilter2D

[supple flume]

i enabled it too

dawg

im going insane

[polar acorn]

How about you show the current values of the contact filter instead of us playing 20 questions

[supple flume]

when i enabled it in filter it did

im Schizophrenic as hell

[slender nymph]

so it's working now?

[supple flume]

yes thank you

[supple flume]

so i did some tweaking

    {
        enemies.Clear();

        Physics2D.OverlapCircle(transform.position, 5f, filter, enemies);

        if (enemies.Count == 0)
        {
            closest = null;
            return;
        }

        closest = enemies[0];
        float closestDistance = Vector2.Distance(transform.position, closest.transform.position);

        for (int i = 1; i < enemies.Count; i++)
        {
            float distance = Vector2.Distance(transform.position, enemies[i].transform.position);

            if (distance < closestDistance)
            {
                closestDistance = distance;
                closest = enemies[i];
            }
        }

        if (closest != null)
        {
            Vector2 dir = closest.transform.position - transform.position;

            if (dir.sqrMagnitude > 0.001f)
                transform.up = dir;
        }
    }```
you mentioned erlier that i should put the update stuff in fixedUpdate should i do it now?
and will it impact performance if i dont

[slender nymph]

there likely won't be much performance impact compared to doing this in FixedUpdate, but there will be some benefit, even if it is fairly minor. if you end up with a lot of objects doing this though the benefit to making that change will increase.
Like i said before, physics objects only update on FixedUpdate frames so all those frames in between you are just getting the exact same results as the last FixedUpdate frame

[supple flume]

so i dont really need to change anything?

[slender nymph]

not really, but there will be some benefit if you do. literally the only change would be prepending "Fixed" to the word "Update"

[supple flume]

lol true
one more question the version of overlapcircle auto removes anything that leaves the range right

[slender nymph]

well no, that was my whole point before about using the returned int from the method. but clearing the list like you're doing does that anyway

[potent portal]

i dont know if this has already been answered but why is vscode being deprecated and what does this mean?

[wintry quarry]

it got rolled into the Visual Studio Editor package

[slender nymph]

-Code

[potent portal]

ah, where do i find that?

[wintry quarry]

in the package manager

[potent portal]

im only finding these 3

[wintry quarry]

yep

[potent portal]

OH

[wintry quarry]

the third one

[potent portal]

sorry my bad

i got a bit confused when you say "Visual Studio Code" package

[wintry quarry]

yeah my bad

[potent portal]

thanks for explaining

[upper loom]

what code is needed for stats increase per level up?

[wintry quarry]

that's a really vague question that can't be answered out of context

[upper loom]

like for example when an enemy object levels up how to increase the stats like HP DMG and stuff. do i do it manually or there is some sort of code that automatically multiplies it?

[wintry quarry]

DIfferent games do it in different ways

some games use linear growth. Some use polynomial growth. Some use exponential growth. Some even use logarithmic growth

Obviously you would need to write the code to apply whatever growth function you want.

And yes some games use manually created piecewise functions or tables, where every value is manually defined.

[upper loom]

thanks for the explaining i will look them up

[polar acorn]

+

[upper loom]

like... "+" alone?

[polar acorn]

+ is generally how you add numbers

which is a way to increase something

[upper loom]

same ways as i++?

[cosmic quail]

i++ is the same as i = i + 1

[upper loom]

i was referring to the i++ in the ''for'' code

[slender nymph]

and that is exactly the same as i = i + 1;

[solar hill]

its the same i++

[polar acorn]

in that case, i++ is the same as i = i + 1

[solar hill]

it can even be awesomeVariableName++

does the same thing

[upper loom]

uh. i still got things to learn huh

[hexed terrace]

we never stop learning

[grand snow]

wait till you learn about ++foo and bar++

[upper loom]

i recently learned that i can type 2+ names in a single primitive type and it will work just fine instead of 1 name for every primitive type

[solar hill]

you mean like "int b, a" ?

you could do that but i honestly dont see any point in keeping it on the same field

you typically want them to be seperate for other reasons

[hexed terrace]

i find that less readable

[solar hill]

it is imo

[upper loom]

this weird feeling i get stresses out about learning code that brings me to think ''am i finlay done? did i learn everything?'' then in reality i only learned like 5% and there is waaaay more to learn

[upper loom]

yup

[solar hill]

nobody is ever done learning

[sour fulcrum]

you stop learning when your dead

[solar hill]

i was about to say something equally macabre

[dreamy lance]

bit of a complicated question but:
im working on a car chase game with some friends and im in charge of making the cop ai for the game. ive tried using the navmesh/nave mesh agent to make them fallow the player and that works.. kinda... it doesnt allow me to apply our custom car physics the the cars. does anyone have an rescources or anything i can use the find an alternitave ?

[grand snow]

There is always more to learn but once the basics are under your imaginary belt you will do fine

[sour fulcrum]

the beginner skill check is honestly learning how to learn

[polar acorn]

Or when you eventually give up, sell all your worldly possessions and go wrestle bears in the woods

[solar hill]

#🤖┃ai-navigation

[sour fulcrum]

i'm sure a life of bear wrestling either involves a lot of learning or very little 😛

[dreamy lance]

should i jsut repost my question there?

[polar acorn]

I never said you had to win

[slender nymph]

just FYI, you can use the NavMesh to get the desired path, then use your own movement code to move it. you don't need to use a NavMeshAgent

[dreamy lance]

good to know

[upper loom]

this reminds me of someone saying ''bro teach me your fighting techniques i just wanna learn training'' lol

[hexed terrace]

This is how I've done this very same thing before, but with A* pathfinding asset

[solar hill]

Is the free version of it still available?

i distinctly remember it being on the asset store along side the pro one

[slender nymph]

i think you have to get it from the dev's website but should still be available

[hexed terrace]

I dunno, I've got the paid version.. which I have no idea when I got, possibly in a humble bundle pack? possibly forever ago

[solar hill]

Is there any one thing about it in particular you feel like makes it worth it over using the default ai navigation tools?

[slender nymph]

oh looks like he stopped updating the free version, hasn't been updated since 2021. the paid version also just got a new major release recently (feb 2024 is not recently lol)

[hexed terrace]

The devs of Recompile swapped from Unity's Navmesh because it was too slow/ performance intensive (I forget which) when updating the path a lot. They swapped to A*. I know them in RL and trust their judgement

[upper loom]

out of context but what is you guy's favorite code? mine is IF because it can be use almost everywhere

[sour fulcrum]

I know some people in the lethal company modding community do weird stuff to pull up some of the c++ side of unity's navmesh stuff for worthwhile performance benefits too

shame it's not easily touchable

[hexed terrace]

I think baking the navmesh at runtime is rather expensive and time consuming too? Whereas with A* it isn't

[sour fulcrum]

yeah but i imagine that just comes with the territory of reading and processing mesh data right

[hexed terrace]

I haven't touched either in ages.. and i tend not to look into the workings of plugins beyond how to use 'em

[sour fulcrum]

super fair

spent a fair bit of time playing with navmesh stuff for lethal mods experimenting with sampling data in general and potential ways of optimising bakes

[ocean inlet]

would someone be able to help with this?

im trying to make controller work on a pause menu but its not working. I was following a tutorial and this error happened

[slender nymph]

use the correct type name

[polar acorn]

Show your code for InputManager

[ocean inlet]

i mean i was following a tutorial and copied what they did, idk what the correct tyoe name would be

[slender nymph]

then you didn't follow it 100%

[solar hill]

Show us your InputManager script

and show us what the Tutorial has for the InputManager script

[subtle mulch]

did you miss a public class InputManager?

[slender nymph]

I have a sneaking suspicion that we are looking at what the tutorial has for the InputManager script 😉
or at least, with a single word difference

[polar acorn]

Show the tutorial

[ocean inlet]

I think I pulled a stupid

[hexed terrace]

When you're doing a tutorial, and it's not working for you but is for them, then you either:

• missed something
• did something wrong

[ocean inlet]

and that I was supposed to name the thing after the code itself

I didnt realize it mb

[slender nymph]

you should start by learning the basics of the language, so that you'll realize that what you are referring to as "the code itself" is the class, which is a type.

[polar acorn]

"I did it exactly like the tutorial so why does theirs work and mine doesn't" counter:
Number of times it wasn't exactly like the tutorial: 200
Number of times it was exactly like the tutorial: 5
Number of times the code literally did not exist: 1
2022-07-19 to 2026-02-25

200

[ocean inlet]

ok

[vagrant leaf]

helloo

where do I start getting back into coding for unity, I haven't worked on it in months

[slender nymph]

!learn or the pins in this channel

[radiant void]

:teacher: Unity Learn ↗

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

[upper loom]

it's always this

[pallid wasp]

Hello, everyone

I am a junior Unity developer

✊

But I have been trying hard

[subtle mulch]

why are you writing this to other channels too...

[pallid wasp]

Cuz this is "code-beginner" channel

[subtle mulch]

yeah well

that is not code

pls use #🤝┃introductions

as we said in #💻┃unity-talk

[solar hill]

also please use id:browse to find out what each channel is really for

[pallid wasp]

got it

[zenith gale]

discord has them flagged as a likely spammer btw

[shrewd sluice]

how do i make this material only render to the back or face

trying to make a card template sooo

[ivory bobcat]

This is the beginner coding channel, you should probably move your message to #💻┃unity-talk

[shrewd sluice]

oh

[spring hamlet]

what happens when you have a class and an inheritor that both derive from an interface, and you try to retrieve an instance of that interface with Get/TryGetComponent, and call the interface's methods? does it return the "topmost" instance of the interface or do something else?

[ivory bobcat]

Can you show an example?

You would get whatever component you've substituted type T with relative to TryGetComponent.

[spring hamlet]

public interface ISpawnListener
{
  public void OnSpawn();
}

public class EnemyController : MonoBehaviour, ISpawnListener
{
  // ... other stuff
  public void OnSpawn()
  {
    // some initialization
  }
}

public class Enemy : EnemyController, ISpawnListener
{
  // ... more stuff
  public void OnSpawn()
  {
    // more initialization
  }
}

public class Spawner : MonoBehavior
{
  public GameObject Spawn(string obj, Vector3 where)
  {
    // stuff
    spawnedObject.TryGetComponent(out ISpawnListener listener);
    listener.OnSpawn();
  }
}

something like this

[ivory bobcat]

ISpawnListener isn't a component?

[spring hamlet]

? you can do that though

[slender nymph]

why are they separately implementing the interface instead of just making the methods virtual then overriding in the inheriting class? it already inherits them

[spring hamlet]

I feel like it'd just be easier to have an interface specifically for classes that want to listen for events like being unloaded or spawned

[slender nymph]

what i mean is that Enemy here already inherits the EnemyController's implementation of the interface so just make those methods virtual and override them in Enemy instead of just reimplementing the interface

public class EnemyController : MonoBehaviour, ISpawnListener
{
  // ... other stuff
  public virtual void OnSpawn()
  {
    // some initialization
  }
}

public class Enemy : EnemyController
{
  // ... more stuff
  public override void OnSpawn()
  {
    // more initialization
  }
}

just this

[ivory bobcat]

ISpawnListener isn't a component, so you'd simply use EnemyController or Enemy

[slender nymph]

by manually implementing the interface again you're just hiding the base class's methods. doing this allows you to even optionally call the base class's methods, and won't cause issues if you store the instance in a variable of the base class's type

[slender nymph]

you absolutely can use an interface for GetComponent or TryGetComponent, and their question is about how that is handled when the classes implement them separately

[spring hamlet]

that works

[ivory bobcat]

Hmm, I had always thought it'd only work for component types.

[sour fulcrum]

if its not implemented by a component type it wont return anything

but any component that does implement it is the type the function is looking for so

[supple flume]

i should put time counters in Update Not fixed Update right

[slender nymph]

it depends, what exactly are you doing

[supple flume]

attack delay

[slender nymph]

then unless a difference of 0.02 seconds is too much, it doesn't really matter

[supple flume]

so i can put it in fixed update and keep everything there

[supple flume]

wait can i just use invoke??

wait no doesnt seem right cause i dont want it to instantly attack

[slender nymph]

I don't personally recommend Invoke, but yes that is an option

keep in mind that any timer you use for it doesn't necessarily have to be directly tied to the actual attack. you can even do your timer in Update and just check a variable in FixedUpdate

[supple flume]

yeah ik
the timer will enable a boolean

so seems a bit realistic like the bullet was already reloaded

why isnt this working
and yes delay value is 5 and i do call the function

[slender nymph]

how have you determined it isn't working, also show the full context for it

!code

[radiant void]

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/

📃 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.

[supple flume]

i made timer a public var to see it in editor

using System.Collections.Generic;
using UnityEngine;

public class Raduis : MonoBehaviour
{
    public ContactFilter2D filter;
    public List<Collider2D> enemies = new List<Collider2D>();

    public Collider2D closest;

    public float timer=0;
    public float delay=5;
    public bool canshoot;

    void FixedUpdate()
    {
        enemies.Clear();

        Physics2D.OverlapCircle(transform.position, 5f, filter, enemies);

        if (enemies.Count == 0)
        {
            closest = null;
            return;
        }

        closest = enemies[0];
        float closestDistance = Vector2.Distance(transform.position, closest.transform.position);

        for (int i = 1; i < enemies.Count; i++)
        {
            float distance = Vector2.Distance(transform.position, enemies[i].transform.position);

            if (distance < closestDistance)
            {
                closestDistance = distance;
                closest = enemies[i];
            }
        }

        if (closest != null)
        {
            Vector2 dir = closest.transform.position - transform.position;

            if (dir.sqrMagnitude > 0.001f)
                transform.up = dir;
        }

        Shooting();
    }

    void Shooting()
    {
        if (timer < delay)
        {
            timer += Time.deltaTime;
        }
    }
}

[sour fulcrum]

how do you know you are calling it

[slender nymph]

keep in mind that your code doesn't reach that point if no enemies are within range

[supple flume]

Oh shi i totally forgot

[supple flume]

i wanted to make that process into a function earlier but a friend visited and i forgot to do it now

using System.Collections.Generic;
using UnityEngine;

public class Raduis : MonoBehaviour
{
    public ContactFilter2D filter;
    public List<Collider2D> enemies = new List<Collider2D>();

    public Collider2D closest;

    public float timer=0;
    public float delay=5;
    public bool canshoot;

    void FixedUpdate()
    {  
        facingEnemies();
        Shooting();
    }

    void facingEnemies()
    {
        enemies.Clear();

        Physics2D.OverlapCircle(transform.position, 5f, filter, enemies);

        if (enemies.Count == 0)
        {
            closest = null;
            return;
        }

        closest = enemies[0];
        float closestDistance = Vector2.Distance(transform.position, closest.transform.position);

        for (int i = 1; i < enemies.Count; i++)
        {
            float distance = Vector2.Distance(transform.position, enemies[i].transform.position);

            if (distance < closestDistance)
            {
                closestDistance = distance;
                closest = enemies[i];
            }
        }

        if (closest != null)
        {
            Vector2 dir = closest.transform.position - transform.position;

            if (dir.sqrMagnitude > 0.001f)
                transform.up = dir;
        }
    }

    void Shooting()
    {
        if (timer < delay)
        {
            timer += Time.deltaTime;
        }
    }
}

yeah now it works

one question when instantiate an object can i decide where it faces?

[verbal dome]

I like to keep most of the gameplay update logic in FixedUpdate, and use Update mostly for visual stuff or input polling if needed

[supple flume]

is there a reason for that?

[verbal dome]

It just makes the game logic non-framerate dependent

And for example I know that I never need to tick my AI classes faster than fixedupdate (50 fps)

[verbal dome]

I'm really dumbing it down here, but I guess that's the main attraction of it

If the game renders at 25 FPS or 150FPS, fixedupdate will still run at 50 FPS which I want for the gameplay logic

I guess I'm also futureproofing for networking, from my understanding servers usually tick at a certain rate

[supple flume]

can i collision detect by 2 triggers?

[supple flume]

o interesting

[slender nymph]

triggers don't collide, but if you want a physics message, there is OnTriggerEnter which is the trigger counterpart to OnCollisionEnter. obviously use the 2d version if using 2d, and make sure you've got the correct setup for the message

[supple flume]

Ik so

void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.tag == "enemy")
        {
            ES  = collision.GetComponent<EnemyScript>();
            ES.health -=1;
        }
    }```

is this correct

both of the objects are trigger

wait i need to do collision.gameobjcet

[slender nymph]

ideally you'd use the CompareTag method rather than string equality for checking the tag, but otherwise yes. also is there a reason that ES is a field rather than just a local variable?

[slender nymph]

you do not because collision is a Collider2D which has those methods/properties on them because it is a Component, unlike the Collision2D type which doesn't because it isn't a component

[supple flume]

will it access enemy script just by getting component from Enemy Script??

[slender nymph]

yes, you can call GetComponent on any component and it will get the component from that component's game object. just like calling it on the component's gameObject property would

[supple flume]

wdym field?

[slender nymph]

a field is a variable declared at the object level (directly in the class in this case)

[supple flume]

ohhhh i thought there is no performance issue by making it up there

why does the object try to move but keep being stuck?

transform.position += transform.right * speed * Time.deltaTime;```

instantiation method

Instantiate(Bullet, shootpoint.position, transform.rotation);

[slender nymph]

this is not enough information to know why.
but also you should ideally be moving these objects with a rigidbody rather than with its transform, especially if you want physics messages like OnTriggerEnter2D to work

[supple flume]

oh will imploment that rn

using System.Collections.Generic;
using UnityEditor.Experimental.GraphView;
using UnityEngine;

public class Raduis : MonoBehaviour
{
    public ContactFilter2D filter;
    public List<Collider2D> enemies = new List<Collider2D>();

    public GameObject Bullet;

    public Collider2D closest;

    public Transform shootpoint;
    public float health = 2;

    public float timer=0;
    public float delay=5;
    public bool canshoot;

    void FixedUpdate()
    {  
        facingEnemies();
        Shooting();
        if(health <= 0)
        {
            Debug.Log("YOU LOST");
        }
    }

    void facingEnemies()
    {
        enemies.Clear();

        Physics2D.OverlapCircle(transform.position, 5f, filter, enemies);

        if (enemies.Count == 0)
        {
            closest = null;
            return;
        }

        closest = enemies[0];
        float closestDistance = Vector2.Distance(transform.position, closest.transform.position);

        for (int i = 1; i < enemies.Count; i++)
        {
            float distance = Vector2.Distance(transform.position, enemies[i].transform.position);

            if (distance < closestDistance)
            {
                closestDistance = distance;
                closest = enemies[i];
            }
        }

        if (closest != null)
        {
            Vector2 dir = closest.transform.position - transform.position;

            if (dir.sqrMagnitude > 0.001f)
                transform.up = dir;
        }
        if (canshoot)
        {
            Instantiate(Bullet, shootpoint.position, transform.rotation);
            canshoot = false;
            timer = 0f;
        }
    }

    void Shooting()
    {
        if (timer < delay)
        {
            timer += Time.deltaTime;
        } else canshoot = true;
    }
}```
this is the script where it gets cloned

using System.Collections.Generic;
using UnityEngine;

public class Bullet : MonoBehaviour
{

    public float speed;
    private EnemyScript ES;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        transform.position = transform.up * speed * Time.deltaTime;
    }

    void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.tag == "enemy")
        {
            ES  = collision.gameObject.GetComponent<EnemyScript>();
            ES.health -=1;
        }
    }
}
``` this is the script where it moves

forSome reason it spawns in 0,0,0 even tho i assigned shootpoint

[snow depot]

I manually changed the GUID of my only scene in Unity... and now unity doesn't recognize it... is it recoverable???

[slender nymph]

this is a code channel

[slender nymph]

what is shootpoint assigned to, and are you sure its position isn't 0,0,0?

[supple flume]

its a child of the object this script is assigned to
an yes im ceretain its 0,0,0

and the thing is
it keeps going to 0,0,0

[slender nymph]

how have you confirmed either of those things

[supple flume]

cause the values try to move up but they keep getting reverted to 0

[supple flume]

inspector

[slender nymph]

stop making assumptions based on what you see in the inspector

[supple flume]

i figured out the problem..
transform.position = transform.up * speed * Time.deltaTime;
I SWEAR i saw the + like 5 times

[slender nymph]

you need to verify everything in your code either with logs or breakpoints. the inspector can only render once per frame, things can change more frequently than that

[supple flume]

about this
i just added kenimatic rigidbody to bullet and its getting the trigger collision*
can i just keep it?

[slender nymph]

wdym "and its rendering"?
you also need to be moving using the rigidbody rather than the transform

[supple flume]

any reason for that
Im not arguing i just need to know

[slender nymph]

because physics messages may not work if you aren't moving the rigidbody. what you're doing now is effectively just teleporting it every frame

[supple flume]

oh will change movement to rigidbody when i done with all the basic ideas i need

one question
how different is GameManager

[slender nymph]

i don't understand what you mean by that question. GameManager is not something built in, so the question without context is meaningless

[supple flume]

why when i name a script GameManager it gets a special icon

is it special in anyform

[slender nymph]

just an old quirk of unity, doesn't really mean anything

[sour fulcrum]

the icon is the only thing

[slender nymph]

pretty sure it's been patched out at this point too

[supple flume]

oh lol

[supple flume]

i use unity 2022 lol

[slender nymph]

i think it was removed in 6

maybe 6.1

[slender nymph]

wait, it was removed in 2022, what specific version are you using?

[supple flume]

yeah i just found it i dont have it anymore

[gaunt cipher]

    {
        StartCoroutine(UnlockRankBootstrap());
    }

    private IEnumerator UnlockRankBootstrap()
    {
        yield return StartCoroutine(AlignKeyWithLock());
    }

    private IEnumerator AlignKeyWithLock()
    {
        yield return new WaitForSeconds(1.0f);

        UnlockRank(NextRankToUnlock, false);
        NextRankToUnlock--;
    }```

I might be missing something, but UnlockNextRank is called from another file. You need to be in a Coroutine to yield return, so this is the only way to get the program to 'halt' and wait for execution. Is there no easier way than StartCoroutine -> yield return another coroutine? It just feels like a lot of scaffolding to get things started

I guess you can nest the second IEnumerator inside the first with System.Collections but it still feels excessive

[wintry quarry]

I'm not seeing why you can't just start AlignKeyWithLock directly?

What's the point of UnlockRankBootstrap if it does nothing but yield another coroutine?

public void UnlockNextRank() {
   StartCoroutine(AlignKeyWithLock());
}``` would be perfectly valid and do exactly the same thing