2D Array of GameObjects...

Question

Hey Guys, This should be really simple but I have no idea why its not working... I initialize a 2d array then try to create a gameobject and store it at each index, but it keeps giving the error "Object not set to an instance of an object" I have the gameobject set in the inspector, and same with the row height and column length... Please help,

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class MeteorSpawn : MonoBehaviour {
 
     public GameObject TestMeteor;
     public int ColumnLength;
     public int RowHeight;
 
     public GameObject [][] meteorArray;
 
     // Use this for initialization
     void Start () {
 
 
         for(int i = 0; i<ColumnLength; i++){
 
 
             for(int j=0;j<RowHeight; j++){
 
 
                 meteorArray[i][j] =    (GameObject)Instantiate(TestMeteor,new Vector3(i,j,0),Quaternion.identity) ;
 
             }
 
         }
 
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }

Answer 1

Best Answer

Answer by hbalint1 · May 09, 2015 at 07:40 AM

What you are trying to use is an array of arrays, not a two dimensional array. Here you can read about the difference: http://stackoverflow.com/questions/12567329/multidimensional-array-vs

Here's the fixed class:

 using UnityEngine;
 using System.Collections;
 
 public class MeteorSpawn : MonoBehaviour {

 public GameObject TestMeteor;
 public int ColumnLength;
 public int RowHeight;

 public GameObject[,] meteorArray;

 // Use this for initialization
 void Start()
 {
     meteorArray = new GameObject[ColumnLength,RowHeight];

     for (int i = 0; i < ColumnLength; i++)
     {


         for (int j = 0; j < RowHeight; j++)
         {


             meteorArray[i,j] = (GameObject)Instantiate(TestMeteor, new Vector3(i, j, 0), Quaternion.identity);

         }

     }

 }

 // Update is called once per frame
 void Update()
 {

 }
 }

5 Show 1 · Share

abyboyganteng · Feb 15, 2021 at 11:22 AM 1

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I already try to do that, But I can't drag and drop like public value usually. if I using other methods, I'm not sure I can control the placement of each element is there another solution that I can drag and drop to fill the array?

2D Array of GameObjects...

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