A tag is a reference word which you can assign to one or more GameObjectsThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary. For example, you might define “Player” tags for player-controlled characters and an “Enemy” tag for non-player-controlled characters. You might define items the player can collect in a SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary with a “Collectable” tag.
Tags help you identify GameObjects for scripting purposes. They ensure you don’t need to manually add GameObjects to a script’s exposed properties with drag and drop, so you save time when you use the same script code in multiple GameObjects.
Tags are useful for triggers in ColliderAn invisible shape that is used to handle physical collisions for an object. A collider doesn’t need to be exactly the same shape as the object’s mesh - a rough approximation is often more efficient and indistinguishable in gameplay. More info
See in Glossary control scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info
See in Glossary that need to determine if the player interacts with an enemy, a prop, or a collectable, for example.
You can use the GameObject.FindWithTag() function to look for any GameObject that contains a tag you specify. The following example uses GameObject.FindWithTag()
. It instantiates respawnPrefab
at the location of GameObjects with the “Respawn” tag.
using UnityEngine;
using System.Collections;
public class Example : MonoBehaviour {
public GameObject respawnPrefab;
public GameObject respawn;
void Start() {
if (respawn == null)
respawn = GameObject.FindWithTag("Respawn");
Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation) as GameObject;
}
}
The InspectorA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
See in Glossary displays the Tag and LayerLayers in Unity can be used to selectively opt groups of GameObjects in or out of certain processes or calculations. This includes camera rendering, lighting, physics collisions, or custom calculations in your own code. More info
See in Glossary dropdown menus below the name of a GameObject.
To create a new tag, select Add Tag…. This opens the Tag and Layer Manager in the Inspector. Once you name a tag, it can’t be renamed later.
Layers are similar to tags, but are used to define how Unity renders GameObjects in the Scene. Refer to documentation on the Layers page for more information.
The Inspector shows the Tag and Layer dropdown menus just below the name of a GameObject. To apply an existing tag to a GameObject, open the Tags dropdown and choose the tag you want to apply. The GameObject is now associated with this tag.
A GameObject can only have one tag assigned to it.
Unity includes some built-in tags which don’t appear in the Tag Manager:
You can use any word you like as a tag. You can even use short phrases, but you might need to widen the Inspector to see the tag’s full name.
When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.
More information
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising. Some 3rd party video providers do not allow video views without targeting cookies. If you are experiencing difficulty viewing a video, you will need to set your cookie preferences for targeting to yes if you wish to view videos from these providers. Unity does not control this.
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.