identifying the index of a gameobject in an array

am doing a tic tac toe game, i need help on how to identify the index of a gameobject in an array when the object is clicked. am trying to figure it out but i couldn’t.
also if you could please explain me how it works.

Hi there!

Sorry to hear you’re having trouble. There are quite a few different ways to handle this, but I’ll try to give you the easiest.

Lets create an X and O Manager that holds the array. To do this, follow these steps:

  1. Create a new gameObject and name it “Manager”

  2. Create a new script called “TicTacToe_Manager” and attach it to the gameObject.

  3. Create a tag called “XO”

  4. Click each of your X or O gameObjects (or their prefabs) and tag them with “XO” tag.

  5. Double click the script and put something like this in it.

    //This is the top of the script underneath the class name
    public GameObject[] myArray; //We make the array public so that we can reference it from other scripts.
    void Start(){
    myArray = GameObject.FindGameObjectsWithTag("XO");
    //For each of the gameObjects with the tag "XO" in the scene, add it to the array.


  1. Create a script called “TicTacToe_Object”

  2. Attach it to each of your X or O objects (or the object prefab).

  3. Double click the script and type in
    the script below:

    //Top of script underneath class name:
    TicTacToe_Manager XO_Manager;
    void Start(){
    XO_Manager = GameObject.Find("Manager").GetComponent<TicTacToe_Manager>();
    void OnMouseDown(){
    //if this object is clicked by the mouse...
    for(int i = 0;i<XO_Manager.myArray.Length;i++){ //for each object in the array..
         if(XO_Manager.myArray_.transform == transform)[ //if that array object's transform is also *this* transform..._

Debug.Log("You just clicked the object with the Index of " + i.ToString(); //Send a message to the console with the ID we just clicked.
Good luck! And let me know if you have any questions.