How can I randomize a child position to spawn a game object?

    public GameObject astroidPrefab;

    // Use this for initialization

    void Start () {

        Transform freePosition = NextFreePosition();

        GameObject enemy = Instantiate(astroidPrefab, freePosition.position, Quaternion.identity) as GameObject;

        enemy.transform.parent = freePosition;

    }

   

   // Update is called once per frame

   void Update () {

       

   }

        Transform NextFreePosition() {

        foreach (Transform childPositionGameObject in transform) {

            if (childPositionGameObject.childCount == 0) {

                return childPositionGameObject;

            }

        }

        return null;

    }

 

Use Random.Range?

 

Luckily I had this thread already opened in another tab this time..

For future reference, please read this thread on how to post code nicely on the forums!
https://forum.unity.com/threads/using-code-tags-properly.143875/

 

Some things I learned with using Random.Range is to use it in conjunction with Random.InitState if you want to appear really random. I was having problems with Random.Range always doing the same order every time the game ran (Not truly random). So if you want it to be a different random pattern every play you should use Random.InitState too. Also, Random.Range when used with an INT does not include the Maximum number in your range, something I didn't think about at first.

Example of what I have in Unity 2017.3

I start with a transform array and int:

Code (CSharp):

1. //Array of spawn points for characters
2. public Transform[] spawnPoints;
3. private int spawnPointIndex;

In my section to find a random int every time its run:

Code (CSharp):

1. //Randomize the Seed to give more random illusion by changing the seed based on current date and time
2. Random.InitState(System.DateTime.Now.Millisecond);
3.  
4. //Find a random spawn point between 0 and Spawn Points total array
5. spawnPointIndex = Random.Range(0, spawnPoints.Length);

Then I do a instantiate to create a prefab instance.