Add two components of the same type using RequireComponent attribute

Questions & Answers
1

Hi, I’ve been wondering whether is it possible to add two components of the same type in my game object when I add my script to it. I would like to add two edge colliders 2D to my gameObject when I assign my script to this same gameObject. Something like this:

[RequireComponent(typeof(EdgeCollider2D))]
[RequireComponent(typeof(EdgeCollider2D))]
public class Foo
{
   ...
}

I know there is a way of adding these two components via script by using AddComponent, but how about adding at the moment I assign my script?

2

You could use the Reset() method from MonoBehaviour. It gets called the first time the script is added to a GameObject and whenever the user selects the ‘Reset’ option from the context menu.

void Reset()
{
	int numColliders = GetComponents<EdgeCollider2D>().Length;
	for (int i = 0; i < 2 - numColliders; i++)
		gameObject.AddComponent<EdgeCollider2D>();
}