I fail to understand | Official Unity Discord | Page 1

feral terrace Oct 8, 2022, 4:39 PM

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So you are getting a null reference to what exactly?

void fern Oct 8, 2022, 4:40 PM

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your guess is as good as mine

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it didn't disclose

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BUT

feral terrace Oct 8, 2022, 4:40 PM

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In the unity console it should point you to a line

void fern Oct 8, 2022, 4:40 PM

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I can tell you that the error only comes up when the enemy gets shot

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feral terrace Oct 8, 2022, 4:41 PM

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Show me the code block for whatever line 18 is?

void fern Oct 8, 2022, 4:41 PM

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oh, its pointing at the score value

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ignore the //is registering false part

feral terrace Oct 8, 2022, 4:42 PM

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so yeah in the Start() method, set ScoreManager.Instance.score =0

void fern Oct 8, 2022, 4:42 PM

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doesnt that make the score reset every time an enemy spawns?

feral terrace Oct 8, 2022, 4:43 PM

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If that is how you have it setup ye

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Otherwise

void fern Oct 8, 2022, 4:43 PM

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I just realized something

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ScoreManager is a subobject to BulletBoard

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would that be causing the issue

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shouldn't it be BulletBoard.ScoreManager.instance.score or something?

feral terrace Oct 8, 2022, 4:44 PM

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No idea. Without looking at ALL your code, its hard to tell. But Conceptually the reason you are getting that issue is cause score = null at the time you are trying to += it.

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So You need to set the score to 0 before you try to add to it

void fern Oct 8, 2022, 4:44 PM

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so maybe the Score Manager needs to be set it to 0 on wake?

feral terrace Oct 8, 2022, 4:45 PM

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ye

wicked sigil Oct 8, 2022, 4:45 PM

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isnt score an int?

void fern Oct 8, 2022, 4:45 PM

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actually its already set to 0

wicked sigil Oct 8, 2022, 4:45 PM

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int cant be null..

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its your instance that is null

feral terrace Oct 8, 2022, 4:45 PM

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my mistak @wicked sigil is right

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I'm tired lol

wicked sigil Oct 8, 2022, 4:45 PM

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nah some other ppl were saying that the int is null too np

void fern Oct 8, 2022, 4:46 PM

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I was about to say

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Every time I have worked with an unset integer that is serialized or public, it shows a 0

wicked sigil Oct 8, 2022, 4:46 PM

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yeah floats and ints are initialized as 0

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but now you gotta figure out why your instance is null

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(i suppose)

feral terrace Oct 8, 2022, 4:47 PM

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shouldn't your code just be ScoreManager.score = 0'?

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Or am I missing something

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I mean score +=

wicked sigil Oct 8, 2022, 4:47 PM

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feral terrace shouldn't your code just be ScoreManager.score = 0'?

if it was static score then yes, but its not, so it needs instance reference

void fern Oct 8, 2022, 4:47 PM

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does the fact that ScoreManager is a SubObject to BulletBoard (which is present in the scene) mean anything?

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wicked sigil Oct 8, 2022, 4:48 PM

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void fern does the fact that ScoreManager is a SubObject to BulletBoard (which is present ...

not inherently..

void fern Oct 8, 2022, 4:48 PM

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okay

feral terrace Oct 8, 2022, 4:49 PM

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I'm going to chalk this up to me bieng an idiot and tired lol

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I'm sure the solution is super simple too

void fern Oct 8, 2022, 4:49 PM

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No errors come up in the IDE

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for either .cs file

feral terrace Oct 8, 2022, 4:49 PM

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Only in unity

void fern Oct 8, 2022, 4:49 PM

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only Unity is complaining

wicked sigil Oct 8, 2022, 4:50 PM

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just put Debug.Log("ScoreManager instance exists: " + (ScoreManager.instance != null));
before line 18

feral terrace Oct 8, 2022, 4:50 PM

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^^

void fern Oct 8, 2022, 4:50 PM

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could I put that on Start instead?

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because line 18 is only reached if the object gets shot

feral terrace Oct 8, 2022, 4:50 PM

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Yeah but that is where unity is pointing

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Easier to just but it right before to avoid any weirdness

void fern Oct 8, 2022, 4:51 PM

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Oh

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Well i DID just run it on start

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and it returned false

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feral terrace Oct 8, 2022, 4:52 PM

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When in doubt Debug.Log out i guess

void fern Oct 8, 2022, 4:52 PM

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could this be causing it to delete itself erroneously and making it return false?

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feral terrace Oct 8, 2022, 4:54 PM

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TBH at this pint I'm outta my league I have no idea

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I imagine it COULD

wicked sigil Oct 8, 2022, 4:55 PM

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void fern could this be causing it to delete itself erroneously and making it return false...

Debug.Log is your friend

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make sure you have only 1 ScoreManager in scene

void fern Oct 8, 2022, 4:55 PM

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It IS deleting itself

feral terrace Oct 8, 2022, 4:55 PM

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At this point I wish there was something like ctor for Debug.Log

wicked sigil Oct 8, 2022, 4:55 PM

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wait wtf is even that

feral terrace Oct 8, 2022, 4:56 PM

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ctor?

wicked sigil Oct 8, 2022, 4:56 PM

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if(instance == null && instance != this)

feral terrace Oct 8, 2022, 4:56 PM

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Oh

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yeah what is that

wicked sigil Oct 8, 2022, 4:56 PM

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i think it should be if(instance != null && instance != this)

void fern Oct 8, 2022, 4:56 PM

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it supposedly checks for other instances

wicked sigil Oct 8, 2022, 4:56 PM

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did you make sure you gave only 1 ScoreManager in scene

void fern Oct 8, 2022, 4:56 PM

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wicked sigil i think it should be ``if(instance != null && instance != this)``

yep

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this is it

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whoops

wicked sigil Oct 8, 2022, 4:57 PM

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yeah pay attention to what you copy 😆

wicked sigil Oct 8, 2022, 4:58 PM

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feral terrace At this point I wish there was something like ctor for Debug.Log

wdym by this?

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"Click to open rate"? or Constructor

feral terrace Oct 8, 2022, 4:59 PM

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constructor

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click to open rate?

wicked sigil Oct 8, 2022, 5:00 PM

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feral terrace click to open rate?

no idea i just googled it lol

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how would you use a constructor for Debug.Log

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if you do Debug.Log("ASD", gameObject), it holds a reference to the object

#I fail to understand