Enable Multiple Box Collides From Parent Object

Questions & Answers
1

I have a box collider acting as a trigger, when the player enters this trigger i’d like to enable the box colliders of the 5 child objects I have, as well as their sprite renderers. This is what I have so far but it’s not quite right.

using UnityEngine;
using System.Collections;

public class EnableObject : MonoBehaviour {

	private BoxCollider[] boxColliders;
	private SpriteRenderer[] sR;
	private bool run = false;

	void Update()
	{
		if(run)
		{
			boxColliders = GetComponentsInChildren<BoxCollider>();
			sR = GetComponentsInChildren<SpriteRenderer>();
			boxColliders.enabled = true;
			sR.enabled = true;
		}
	}

	void OnTriggerEnter(Collider other)
	{
		if(other.GetComponent<Collider>().tag == "Player")
		{
			run = true;
		}
	}
}
2

boxColliders = GetComponentsInChildren();
sR = GetComponentsInChildren();
So each call return an array of box colliders and sprite renderers.

boxColliders.enabled = true;
sR.enabled = true;

Arrays can’t be enabled. BoxCollider and SpriteRenderer can, though.

foreach (var collider in boxColliders)
    collider.enabled = true;

foreach (var s in sR)
    s.enabled = true;

You have to treat collections and single instances as different types. There’s a set of members exposed for arrays, and you have to get an item from the array to perform work on a particular item.

3

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