chip-gameV3/Assets/Scripts/Menu/MenuLayoutController.cs

using System.Collections.Generic;
using UnityEngine;

public class MenuLayoutController : MonoBehaviour
{
    [SerializeField] List<MenuPanel> panels;
    int panelIndex = 0;

    private void Start()
    {
        foreach (var panel in panels)
        {
            panel.Disable(0);
        }
        panels[panelIndex].Enable(0, 0);
    }

    private void Update()
    {
        int direction = GetDirection();
        
        int newPanelIndex = Mathf.Clamp(panelIndex + direction, 0, 2);
        bool indexChanged = newPanelIndex != panelIndex;
        if (indexChanged)
        {
            var currentPanel = panels[panelIndex];
            var nextPanel = panels[newPanelIndex];

            currentPanel.Disable(0);
            nextPanel.Enable(0, 0);

            panelIndex = newPanelIndex;
        }
    }

    private static int GetDirection()
    {
        int dir_h = 0;
        dir_h += In.GetButtonDownAnyPlayer(PlayerAction.right) ? 1 : 0;
        dir_h += In.GetButtonDownAnyPlayer(PlayerAction.left) ? -1 : 0;
        return dir_h;
    }
}