if anyone is free, I'm getting a null

[fallen prism]

heres the code

    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("OneWayPlatform"))
        {
            currentOneWayPlatform = collision.gameObject;
        }
    }

    private void OnCollisionExit2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("OneWayPlatform"))
        {
            currentOneWayPlatform = null;
        }
    }

[tired island]

what line

[fallen prism]

33

[tired island]

wow

thanks

very useful

[fallen prism]

currentOneWayPlatfor = null

sorry

i was on visual studio

[tired island]

That line cannot throw a null reference error

[fallen prism]

when i click the down arrow in the editor it does

[tired island]

Show the error

[fallen prism]

NullReferenceException: Object reference not set to an instance of an object
OneWayPlatform+<DisableCollision>d__5.MoveNext () (at Assets/OneWayPlatform.cs:39)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <685c48cf8f0b48abb797275c046dda6a>:0)
UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
OneWayPlatform:Update() (at Assets/OneWayPlatform.cs:17)

with a ss?

[tired island]

What is OneWayPlatform.cs line 39

[fallen prism]

i have no idea

the only thing i have named OneWayPlatform

[tired island]

Then we're done here

[fallen prism]

is the tag

[cloud matrix]

Maybe show the entire script

[fallen prism]

that is

not

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

public class OneWayPlatform : MonoBehaviour
{

    private GameObject currentOneWayPlatform;

    [SerializeField] private BoxCollider2D playerCollider;

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.S) || Input.GetKeyDown(KeyCode.DownArrow))
        {
            StartCoroutine(DisableCollision());
        }
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("OneWayPlatform"))
        {
            currentOneWayPlatform = collision.gameObject;
        }
    }

    private void OnCollisionExit2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("OneWayPlatform"))
        {
            currentOneWayPlatform = null;
        }
    }

    private IEnumerator DisableCollision()
    {
        BoxCollider2D platfomCollider = currentOneWayPlatform.GetComponent<BoxCollider2D>();

        Physics2D.IgnoreCollision(playerCollider, platfomCollider);
        yield return new WaitForSeconds(0.25f);
        Physics2D.IgnoreCollision(playerCollider, platfomCollider, false);
    }
}

[tired island]

!code

[polar flume]

Posting code

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Use links to services like:
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📃 Inline Code

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

[cloud matrix]

Post using an external link so we can see line numbers

[fallen prism]

okay

[tired island]

And what is the issue of finding line 39 of that

[fallen prism]

https://gdl.space/hacugagavi.cs

[tired island]

Okay, so,

BoxCollider2D platfomCollider = currentOneWayPlatform.GetComponent<BoxCollider2D>();

currentOneWayPlatform is null

[fallen prism]

yeah

[tired island]

You can't get a Box Collider from nothing

[fallen prism]

i know that why it only works when touching the platform

im wondering a way so that it doesnt use null

and throw an error when i hit the down arrow not touching the one way platform

[tired island]

What do you want this function to do when you aren't touching a platform

[fallen prism]

nothing i just dont want it to throw an error

[tired island]

So check if it's null before trying to do anything

[cloud matrix]

if(!currentOneWayPlatform)
    return;//do nothing```

[tired island]

and if it's null, don't do anything

[fallen prism]

so i just write currentOneWayPlatform = !currentOneWayPlatform

and put

if(!currentOneWayPlatform)
return;//do nothing

in update?

[tired island]

what

[fallen prism]

nvm

[tired island]

Just use an if statement. Check if it's not null before you try to use it

[cloud matrix]

You'd just return early from the Update method or coroutine with yield return break if the reference was null

[fallen prism]

is this better dalphat

[cloud matrix]

Pretty sure we're both saying the same thing