「Unity/UniRx/値変更検知/ObserveEveryValueChanged配列」の版間の差分

2023年6月23日 (金) 16:32時点における版

ObserveEveryValueChangedを配列で検知できる？

ObserveEveryValueChangedを配列の値変更をできなかった。

Observable.Createで配列対応したObserveEveryValueChangedを自作

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

public class ChangeValueListObservableScene : MonoBehaviour
{
    class RequestData
    {
        public string Url;
        public bool IsCompleted;
    }
    class SampleClient
    {
        IObservable<int> isCompletedsAsObservable;
        public IObservable<int> IsCompletedsAsObservable { get => isCompletedsAsObservable; set => isCompletedsAsObservable = value; }
        List<RequestData> requestDatas;
        public List<RequestData> RequestDatas { get => requestDatas; set => requestDatas = value; }
        public SampleClient()
        {
            requestDatas = new List<RequestData>();
            requestDatas.Add(new RequestData
            {
                Url = "ttp://example.com",
                IsCompleted = false,
            });
            requestDatas.Add(new RequestData
            {
                Url = "ttp://example2.com",
                IsCompleted = false,
            });
            isCompletedsAsObservable = Observable.Create<int>(observer =>
            {
                int i = 0;
                foreach (RequestData requestData in requestDatas)
                {
                    int id = i;
                    requestData.ObserveEveryValueChanged(_ => _.IsCompleted)
                        .Subscribe(isCompleted =>
                        {
                            Debug.Log("isCompleted=" + isCompleted);
                            observer.OnNext(id);
                        });
                    i++;
                }
                return Disposable.Empty;
            });
        }
        public void Response(int id)
        {
            requestDatas[id].IsCompleted = true;
        }
    }
    void Start()
    {
        int id = 1;
        var sampleClient = new SampleClient();
        sampleClient.IsCompletedsAsObservable
            .Subscribe(id => {
                if (!sampleClient.RequestDatas[id].IsCompleted) return;
                Debug.Log("Id=" + id + " Url=" + sampleClient.RequestDatas[id].Url + " IsCompleted=" + sampleClient.RequestDatas[id].IsCompleted);
            })
            .AddTo(gameObject);
        // 5秒後に遅延実行
        Observable.Timer(System.TimeSpan.FromSeconds(5))
            .Subscribe(_ => {
                sampleClient.Response(id);
            }).AddTo(gameObject);
    }
}

Subjectを使った配列内のキーを検知(代替)

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

public class ChangeValueListSubjectScene : MonoBehaviour
{
    class SampleClient
    {
        public List<string> Urls = new List<string>();
        Subject<int> isCompletedsAsObservable;
        public IObservable<int> IsCompletedsAsObservable { get => isCompletedsAsObservable; }
        public SampleClient()
        {
            Urls.Add("ttp://example.com");
            Urls.Add("ttp://example2.com");
            isCompletedsAsObservable = new Subject<int>();
        }
        public void Response(int id)
        {
            isCompletedsAsObservable.OnNext(id);
        }
    }
    void Start()
    {
        int id = 1;
        var sampleClient = new SampleClient();
        sampleClient.IsCompletedsAsObservable
            .Subscribe(id => {
                Debug.Log("Id=" + id + " sampleClient.Url=" + sampleClient.Urls[id]);
            })
            .AddTo(gameObject);

        // 5秒後に遅延実行
        Observable.Timer(System.TimeSpan.FromSeconds(5))
            .Subscribe(_ => {
                sampleClient.Response(id);
            }).AddTo(gameObject);
    }
}

EveryUpdateを使った配列内のデータを検知(代替)

毎フレームごとに処理されるので危険かも。

public class ChangeValueListScene : MonoBehaviour
{
    class SampleClient
    {
        public List<string> Urls = new List<string>();
        public List<bool> IsCompleteds = new List<bool>();
        public SampleClient()
        {
            Urls.Add("ttp://example.com");
            Urls.Add("ttp://example2.com");
            IsCompleteds.Add(false);
            IsCompleteds.Add(false);
        }
        public void Response(int id)
        {
            IsCompleteds[id] = true;
        }
    }
    void Start()
    {
        int id = 0;
        var sampleClient = new SampleClient();
        // 毎フレームごとに処理されるので危険かも。
        var observable = Observable.EveryUpdate()
            .Subscribe(_ =>
            {
                Debug.Log("IsCompleteds.Count=" + sampleClient.IsCompleteds.Count);
                int cnt = sampleClient.IsCompleteds.Count;
                for (int tmpId = 0; tmpId < cnt; tmpId++)
                {
                    if (!sampleClient.IsCompleteds[tmpId]) continue;
                    Debug.Log("Id=" + tmpId + " sampleClient.Url=" + sampleClient.Urls[tmpId]);
                    sampleClient.IsCompleteds[tmpId] = false; // そのままにすると、連続してここが処理されるので、初期化
                }
            })
            .AddTo(gameObject);
        // 5秒後に遅延実行
        Observable.Timer(System.TimeSpan.FromSeconds(5))
            .Subscribe(_ => {
                sampleClient.Response(id);
            }).AddTo(gameObject);
    }
}