IPアドレスから住んでいる地域を確認するサンプル for Unity

KResistance.cs

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

public class KResistance: MonoBehaviour {
    private const string apiUrl = "https://ipinfo.io/json";

    [System.Serializable]
    public class Response {
        public string ip;
        public string hostname;
        public string city;
        public string region;
        public string country;
        public string loc;
        public string org;
        public string postal;
        public string timezone;
        public string readme;
    }

    private Response response;

    static public KResistance Create(){
        var go = new GameObject( "KResistance" );
        var component = go.AddComponent<KResistance>();

        return component;
    }

    IEnumerator Start(){
        var request = UnityWebRequest.Get( apiUrl );

        yield return request.SendWebRequest();
        
        if( request.isHttpError || request.isNetworkError ){
            throw new Exception( request.error );
        }

        response = JsonUtility.FromJson<Response>( request.downloadHandler.text );
    }

    public bool IsReady(){
        return response != null;
    }

    public bool Check( string region = "Kagawa" ){
        if( response == null ){
            throw new NullReferenceException();
        }

        return response.region == region;
    }
}

Sample.cs

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

public class Sample : MonoBehaviour
{
    // Start is called before the first frame update
    IEnumerator Start()
    {
        var resistance = KResistance.Create();

        while( !resistance.IsReady() ){
            yield return null;
        }

        Debug.Log( resistance.Check() );

    }
}