koobas.hobune.stream
Making an array that contains object with one of 2 tags
Hi. I'm trying to make an array that contains GameObjects with the tag "RedTeam" or "BlueTeam" I have this code here to make the array
GameObject[] go = GameObject.FindGameObjectsWithTag(targetTag)
and I was hoping to make it something like this:
GameObject[] go = GameObject.FindGameObjectsWithTag(targetTag || targetTag2)
But as you probably have guessed, that didn't work either...
If you know a solution to this, please write one ;)
Thanks for reading -Frank
Using Generic Lists and System.Linq works quite well.
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Example : MonoBehaviour
{
string[] tags;
List<GameObject> gameObjects = new List<GameObject>();
void Start()
{
tags = new string[]{"targetTag", "targetTag1"};
foreach(GameObject go in GameObject.FindObjectsOfType (typeof(GameObject)))
{
if(tags.Contains (go.tag))
gameObjects.Add (go);
}
print (gameObjects.Count);
}
}
And if I'll be calling this function every 10th second or so with 50+ enemies, will it cause loss of performance?
Not if you're calling every 10 seconds. I just wouldn't call it in Update().
Ok. Won't call it in the Update() ;) Thanks for the help ;)
If this solution works out for you, don't forget to tick the answer / vote up ;)
Happy Developing
This works quite well - I know you wrote this as an example - but as an improvement, I would let the user fill in the tags array from the inspector ins$$anonymous$$d of newing it up in Start.
Clunk's answer works pretty nice - but just for pure convenience - you could use Linq here as well:
GameObject[] gos = FindObjectsOfType(typeof(GameObject))
.Cast<GameObject>()
.Where(g => g.tag == "Bartle" || g.tag == "Doo")
.ToArray();
(FindObjectsOfType returns a Object[] hence the Cast())
You could wrap that in a static function:
public static GameObject[] FindObjectsWithTags(IEnumerable<string> tags)
{
return Object.FindObjectsOfType(typeof(GameObject))
.Cast<GameObject>()
.Where(go => tags.Contains(go.tag)).ToArray();
}
Usage:
string[] tags = new[] { "Bartle", "Doo", "BlackCops", "FlatLine" };
GameObject[] gos = FindGameObjectsWithTags(tags);
The function takes an IEnumerable - so you could pass it a regular array, a list, an arraylist, etc.
