Version: 5.5 (switch to 5.6b)
LanguageEnglish
  • C#
  • JS

Script language

Select your preferred scripting language. All code snippets will be displayed in this language.

Transform.root

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Switch to Manual
public var root: Transform;
public Transform root;

Description

Returns the topmost transform in the hierarchy.

(This never returns null, if this Transform doesn't have a parent it returns itself.)

	// Is a collision between two objects in different hierarchies?
	function OnCollisionEnter(collision : Collision) {
		if ( collision.transform.root != transform.root ) {
			print("The colliding objects are not in the same hierarchy");
		}
	}
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void OnCollisionEnter(Collision collision) { if (collision.transform.root != transform.root) print("The colliding objects are not in the same hierarchy"); } }