OldBlueWater/BlueWater/Assets/Restaurant.cs

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

public class Restaurant : MonoBehaviour
{
    public Transform restaurantSwitch;
    private bool isSwitchOn = false;

    public void RestaurantSwitchOnOff()
    {
        if (!isSwitchOn)
        {
            restaurantSwitch.rotation *= Quaternion.Euler(0, 0, -90);
            isSwitchOn = true;
        }
        else
        {
            restaurantSwitch.rotation *= Quaternion.Euler(0, 0, 90);
            isSwitchOn = false;
        }
    }
}