Null Checking | Official Unity Discord | Page 1

near mountain Jan 12, 2022, 5:18 PM

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west radish Jan 12, 2022, 5:19 PM

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specifically the null check isn't working, this is how im doing it if it helps

near mountain Jan 12, 2022, 5:19 PM

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Does it never engage?

west radish Jan 12, 2022, 5:19 PM

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yes

near mountain Jan 12, 2022, 5:19 PM

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Hmm.

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Does that mean it debugs the drawline fine?

west radish Jan 12, 2022, 5:20 PM

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yeah, pretty much the only thing that isn't working in the snippet is the null check

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when destroyed the gameobject shows as missing in a list, if it helps

near mountain Jan 12, 2022, 5:21 PM

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brb I've got a yap happy family member

west radish Jan 12, 2022, 5:21 PM

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alrighty

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looks like if i check if it isnt null the if statement executes

glad zenith Jan 12, 2022, 5:26 PM

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if theObject == null is not true, then the object has not been destroyed

near mountain Jan 12, 2022, 5:26 PM

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back

glad zenith Jan 12, 2022, 5:26 PM

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Assuming it's a UnityEngine Object

west radish Jan 12, 2022, 5:26 PM

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and yet unity still screams at me

near mountain Jan 12, 2022, 5:27 PM

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Okay so if I'm understanding this, if player selects something it drwas a line to that gameobject?

Right?

west radish Jan 12, 2022, 5:27 PM

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im using Destroy(gameObject); to destroy the object

glad zenith Jan 12, 2022, 5:27 PM

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yes

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that's fine

west radish Jan 12, 2022, 5:27 PM

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near mountain Okay so if I'm understanding this, if player selects something it drwas a line t...

yup

glad zenith Jan 12, 2022, 5:27 PM

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note that it takes a frame to take effect

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It's also possible that you're making some assumption about which object is destroyed that is faulty

near mountain Jan 12, 2022, 5:28 PM

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good point - have you done breakpoints to see what it's looking at, and what it's destroy?

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Also wouldn't this result in a selection no longer being true anymore the moment it's destroyed?

west radish Jan 12, 2022, 5:29 PM

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well it certainly wouldnt be drawing a line when the object gets destroyed

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and it is not drawing a line to the object when it gets destroyed

near mountain Jan 12, 2022, 5:30 PM

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west radish well it certainly wouldnt be drawing a line when the object gets destroyed

okay so the moment the object is destroyed, select == false at that point right?

west radish Jan 12, 2022, 5:31 PM

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right well, looks like i've fixed it

near mountain Jan 12, 2022, 5:31 PM

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oh?

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what happened?

west radish Jan 12, 2022, 5:32 PM

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i was silly, and put the if check too late

#Null Checking