Choose random Gameobject from array?

Archived Forums Questions & Answers
1

Hi, sorry if this has been asked before, but I haven’t found any answer.

I’m trying to make my script choose a random gameobject from my array.

GameObject[] spawnPoints = GameObject.FindGameObjectsWithTag("point");

How do I pick a random object from that array?

Thanks, Andreas.

4

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour 
{
	GameObject[] spawnPoints;
	GameObject currentPoint;
	int index;

	void Start()
	{
		spawnPoints = GameObject.FindGameObjectsWithTag("point");
		index = Random.Range (0, spawnPoints.Length);
		currentPoint = spawnPoints[index];
		print (currentPoint.name);
	}
}
5

@clunk47’s answer’s correct. I just want to add, that I’m so often accessing random elements in arrays that I use this extension method to make it a bit less wordy.

namespace CustomArrayExtensions 
{
    public static class ArrayExtensions {
        public static T GetRandom<T>(this T[] array) {
            return array[Random.Range(0, array.Length)];
        }
    }
}

Then in my code I use like this:

using UnityEngine;
using CustomArrayExtensions;

public class ExampleClass : MonoBehaviour {

// Array populated in Unity Inspector
[SerializeField] private GameObject[] myArray;

    public void Start() {
        GameObject selectedObject = myArray.GetRandom();
    }
}
2

See this similar question which I’ve already answered.

(I don’t mean to sound short, but, searching the exact text which you used as a caption yield answers).

3

Try creating an int like this: int randomSpawn = (Random.Range(0f, spawnpoints.Lenght));
This might be wrong, but it might help you