So I am trying to simply copy a variable named tile into another variable named m_tile and it says m_tile is null, when trying to instantiate it, but when I use just the tile variable it works fine. How could I do that?
How to fix a NullReferenceException error
https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/
Three steps to success:
- Identify what is null
- Identify why it is null
- Fix that
This may also be relevant to your case:
Here is some timing diagram help:
Specifically, explain how you are confident CreateWorld() happens prior to Start(), and then go prove it with Debug.Log()
this didn’t help me at all… I know CreateWorld happens prior Start because the size is set properly and it generates 15x15 tiles. The only error I have is when I set the m_tile to be instantiated instead of tile.
NullRef didn’t change. It’s like War. War Never Changes. Neither does NullRef.
If m_tile is null, you can’t instantiate it. You can’t copy “nothing”. What do you actually want to do?
I want to do what in the picture is, don’t you see it? m_tile = tile, tile is a Gameobject that is not null, but when I use m_tile it is null, why?
A little stupid question, I’m not an expert, but we can write CreateWorld(), without void in front ??
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Not so much… didn’t even notice that.
OP are you looking for a factory method like this:
Factory Pattern in lieu of AddComponent (for timing and dependency correctness):
https://gist.github.com/kurtdekker/5dbd1d30890c3905adddf4e7ba2b8580
Yeah, they’ve written a private constructor for a monobehaviour, which isn’t correct in the world of Unity.
These values need to be initialised in Awake/Start/OnEnable.