ask about using C# to create 2D array of GameObject

Unity Engine
1

Hi,

i wanted to create a 2D array of GameObject (prefab). I want help for it. I tried, but doesn’t work.
The following is my code:

                           public GameObject tile;

		for(int i=0; i<20; i++)
		{
			for(int j=0; j<20;j++)
			{
				 floors[i,j]=(GameObject)Instantiate(tile, new Vector3((i*foradd)-begin, 10,(j*foradd)-begin),Quaternion.identity)  ;	
			}
		}

Thanks!

2

What type is the var “floors”?

3

Better, where you create?

4

How about declaring the variable before randomly using and hoping it works?

5

Thank you for reply

public GameObject[,] floors;

6 
public GameObject[,] floors = new GameObject[20,20];
7

I did it, but it report error"A null value was found where an object instance was required."

		floors=new GameObject[20,20];
		for(int i=0; i<20; i++)
		{
			floors[i]= new GameObject[i];
			for(int j=0; j<20;j++)
			{
				 floors[i,j]=(GameObject)Instantiate(tile, new Vector3((i*foradd)-begin, 10,(j*foradd)-begin),Quaternion.identity)  ;	
			}
8

What’s the point of “floors_= new GameObject*;”, you already initialized did this with floors=new GameObject[20,20];*_
The Problem you get is probably because you haven’t assigned “tile” in the Inspector

9

Hi Thank you for reply. I assigned them~~