OldSchoolNameEntry.cs

using TMPro;
using UnityEngine;


[RequireComponent(typeof(OnlineScoreRecorder))]

public class OldSchoolNameEntry : MonoBehaviour
{
    [SerializeField] private TMP_Text _firstLetterButton;
    [SerializeField] private TMP_Text _secondLetterButton;
    [SerializeField] private TMP_Text _thirdLetterButton;
    

    private int firstChar = (int)'A';
    private int secondChar = (int)'A';
    private int thirdChar = (int)'A';
    private int score;

    public void SetScore(int newScore)
    {
        score = newScore;
    }
    
    public void FirstChanged()
    {
        firstChar += 1;
        if (firstChar > (int)'Z')
        {
            firstChar = (int)'A';
        }
        _firstLetterButton.text = ((char)firstChar).ToString();
    }
    
    public void SecondChanged()
    {
        secondChar += 1;
        if (secondChar > (int)'Z')
        {
            secondChar = (int)'A';
        }
        _secondLetterButton.text = ((char)secondChar).ToString();
    }
    
    public void ThirdChanged()
    {
        thirdChar += 1;
        if (thirdChar > (int)'Z')
        {
            thirdChar = (int)'A';
        }

        _thirdLetterButton.text = ((char)thirdChar).ToString();
    }
    
    public string GetName()
    {
        return ((char)firstChar).ToString() + ((char)secondChar).ToString() + ((char)thirdChar).ToString();
    }
    
    public void Submit()
    {
        GetComponent<OnlineScoreRecorder>().RecordScoreOnline(GetName(), score);
    }
}