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Question by Decompiled · Sep 10, 2017 at 07:35 PM · getcomponentarraysmonobehaviour

How do I use GetComponent to populate and array?

I have a class which uses Monobehaviour and I would like to store it in an array. I know what I could use a list instead, but I was wondering how this code works for arrays.

Firstly I have created a test class to place in the array:

 public class TestObject : MonoBehaviour { 
     int number = 0;
 
     public int GetNumber() {
         return number;
     }
 
     public void Initalize() {
         number += 1;
     }
 
     public void InitalizeWithParameter(int passedNumber) {
         number = passedNumber;
     }
 }

If it wasn't for the monobehaviour this code below is how I would declare and initialise the array (I am initialising it with a method rather than a constructor in this example):

 TestObject[] two = new TestObject[10];
 
 for (int i = 0; i < 10; i++) {
     two.Initialize();
     Debug.Log(two[i].GetNumber() + 20);
 }

Because the class uses of MonoBehaviour I am unable to use the 'New' keyword. Online everybody recommends using 'GetComponent' instead. I have tried the example below, but the syntax is incorrect. Does anybody know what this should look like, or another way of getting this working? I have really tried, but need some help at this stage.

 TestObject[] three = GetComponent<TestObject>()[10];
 
 for (int i = 0; i < 10; i++) {
     three.Initialize();
     Debug.Log(three[i].GetNumber() + 20);
 }
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Answer by yanivng · Sep 10, 2017 at 07:45 PM

GetComponent doesn't create any new objects. You might want to start here: https://docs.unity3d.com/ScriptReference/Object.Instantiate.html

You can put your MonoBehavior script on a prefab and instantiate from that prefab.

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