Can't create an Collider2D array?

Question

I have been trying to create an array of collider2D so i can disable all the respective colliders of an children's object.

But this error pops-up and i have tried to figured out what's wrong but nothing seems wrong to me, or I'm not seeing it.

ERROR: Cannot implicitly convert type UnityEngine.Collider2D' to UnityEngine.Collider2D[]'

What I'm I doing wrong?

 private Collider2D[] childrenColliders;
 private bool destroied= false;
 
 void Update (){
 
     if (assetHitPoints<=0 && destroied == false){
             Destroy();
     }
 }
 
 void Destroy (){
 
     Debug.Log("Destroying");
             
     childrenColliders = GetComponentInChildren<Collider2D>();
 
     foreach (Collider2D colliders in childrenColliders){
         colliders.enabled = false;
     }
 
     particleSystem.Play();
     destroied=true;
 
 }

Answer 1

Best Answer

Answer by Bentley · Jan 21, 2015 at 06:21 PM

You are getting that error because GetComponentInChildren() is returning a single Collider2D, and what you want is an array of Collider2D's, or Collider2D[]. What you'll want to do is something like this:

 List<Collider2D> childrenColliders = new List<Collider2D>();
 GetComponentsInChildren<Collider2D>(childrenColliders);

The first line replaces line 1 of your code and the second replaces line 15. You can then iterate through the list instead.

Also as a side note: if you are working with an unknown number of items you will probably want to use a List since Lists can grow and shrink as needed using the .Add() method, while arrays must be initialized with a set capacity.

Hope this helps,

Bentley

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Subject-Gabz · Jan 21, 2015 at 06:35 PM 0

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Thanks Bentley, it helped me solve my problem, and from now on I'll take your side note in consideration before using Arrays or a List.

Appreciated.

Can't create an Collider2D array?

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