Multiple tag using string

Hi guys
Need to have multiple ways to tag my npc's found this code that states you can use this
tag name might be enemysniperblue
tag.Contains(string sniper)

Code (CSharp):

1. void OnTriggerStay(Collider other) {
2.         if (other.tag.Contains(string night )){Debug.Log("hello");}
3.         int enemyCount = GameObject.FindGameObjectsWithTag("night").Length;
4.         GameObject[] enemies = GameObject.FindGameObjectsWithTag("night");

return error Unexpected symbol `night', expecting `.' tried putting "night" but same thing .Also if this does work is ther a way to use it with FindGameObjectsWithTag

 

String.Contains() is a method that expects a string literal;

Code (CSharp):

1. if ( other.tag.Contains("night") ) {
2.     Debug.Log( ".." )
3. }

Also, as most "Find" methods are - or can be - quite expensive, you should try to not use them too often;

Code (CSharp):

1. GameObject[] enemies = GameObject.FindGameObjectsWithTag( "night" );
2. int enemyCount = enemies.Length;

 

Hey foreau unfortunately it does not work its returns "night" tag is undefined. night is part of the tag enemyknight.

 

Oh, so you want to find all GameObjects that has a tag that contains "night"? In that case you need to find _all_ the GameObjects of a certain type and do a match on each of their tag.

 

Really what you are after, I think, is the ability to apply multiple tags to an object, which is not possible by default.

I googled a bit and found this asset, maybe it will help: http://forum.unity3d.com/threads/tag-frenzy-multiple-tags-per-game-object-in-unity.213029/

 

2 ways:

1. Get all the objects in the scene or by type and do a foreach cheching for containning string (tag) that you want.
2. Create a script to store a array of string for you and call it Tags. You might want to add this to the other scripts:
   
   Code (CSharp):

   1. [RequiredComponent(typeof(yourClassRefTags))]

Hope this helps.

 

Was hoping to use Unities tag system instead of a 3rd party guess i'll try out Tag frezy known about it a while so shall see u would think Unity would have got round by now to allowing multi tags.

 

If you need to have multiple tags for a single object, I would use empty game objects and parent them to the main object, then search through them and find objects that are tagged as night when the trigger event happens.


Something like this.

Code (CSharp):

1.    
2.  
3. void OnTriggerStay(Collider other) {
4.  
5. Transform [] allTagObjects = other.GetComponentsInChildren<Transform>();
6.  
7. foreach( Transform tagObject in allTagObjects){
8.  
9. if(tagObject.tag == "night"){
10.  
11. Debug.Log("hello");
12. break;
13. }
14.          
15.  
16. }
17.  
18.  

 

I made empty GO added collider as trigger.This works so I guess it depends on what uses most processing power. I made a post about a asset called tag frenzy Ill see if i can get it to work then stress test the 3 methods..My other option is to create varies tags and have a ton of OR statements then stitch them together.
Thx for the code

 

I share your view and it is possible (Instructions below), which is why I created a multiple tags product using only the Unity tag system. Here are some solutions for anyone facing this issue:

• A custom tag solution definitely works and allows generating new tags at runtime. However a custom system usually involves a TagManager gameObject and the attaching scripts to any tagged object. This can be cumbersome, especially since Unity has a tag system.

• In some situation using polymorphism and interfaces can be acceptable. In other words you can make a Flying base class or a IRed interface. Then use GameObject.FindObjectsOfType() to find the desired objects. The Unity documents indicates this API is slow any should not be used in an update loop.

• Create your own Multiple Tags solution that uses the Unity tag system (Like I did). Assign multiple tags to a gameObject by stitching together multiple tags into a single string. If you delineate the tags with a backslash the Unity tag system will present the tags in a very elegant hierarchical menu. The only thing you may want to create is some custom find tag APIs that will find gameObjects by comparing against tags after splitting.