Unity controls the selection of the previous and next characters

 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class tto : MonoBehaviour {

    public Transform pos;//cube The location of cube Change to empty object
    public GameObject[] characterPrefabArray;// Different colors of cube
    public int index = 0;// See
    private GameObject[] goArray;
    // Start is called before the first frame update
    void Start()
    {

        if (characterPrefabArray.Length != 0)
        {
            // example hide
            goArray = new GameObject[characterPrefabArray.Length];
            for (int i = 0; i < characterPrefabArray.Length; i++)
            {
                goArray[i] = Instantiate(characterPrefabArray[i], pos.position, Quaternion .identity );
                goArray[i].SetActive(false);
                goArray[i].transform.parent = transform;
            }
            goArray[0].SetActive(true);
        }

    }

    public void PreCharacter()
    {
        goArray[index].SetActive(false);

        index = index == 0 ? (characterPrefabArray.Length - 1) : --index;
        goArray[index].SetActive(true);
    }
    public void NextCharacter()
    {
        goArray[index].SetActive(false);

        index = index == characterPrefabArray.Length - 1 ? 0 : ++index;
        goArray[index].SetActive(true);
    }

}