Unity/ChatGPT
提供: 初心者エンジニアの簡易メモ
apiを取得する
- https://beta.openai.com/ でアカウントを作成
- "create new secret key"を押してAPIキーを作成する
参考
https://techblog.kayac.com/2022-group-calendar-unity-openapi
料金確認
https://platform.openai.com/account/usage
リクエスト制限
https://platform.openai.com/docs/guides/rate-limits/overview
無料ユーザは、20リクエスト/分まで 従量ユーザは、60~3000リクエスト/分まで
制限を超えた際のエラー文言
UnityWebRequestException: HTTP/1.1 429 Too Many Requests { "error": { "message": "The server had an error while processing your request. Sorry about that!", "type": "server_error", "param": null, "code": null } }
unityサンプル
Main.cs
using System.Collections; using System.Collections.Generic; using UnityEngine; public class Main : MonoBehaviour { [SerializeField] GptView gptView; GptUseCase gptUseCase = null; void Awake() { if (ReferenceEquals(gptUseCase, null)) { GptRepository gptRepository = new GptRepository(); GptPresenter gptPresenter = new GptPresenter(gptView); gptUseCase = new GptUseCase( gptPresenter, gptRepository ); gptUseCase.Begin(); } } void OnDestroy() { if (!ReferenceEquals(gptUseCase, null)) { gptUseCase.Finish(); } } }
GptUseCase.cs
using System.Linq; using Cysharp.Threading.Tasks; using TMPro; using UniRx; public class GptUseCase { GptPresenter gptPresenter; GptRepository gptRepository; CompositeDisposable disposable = null; public GptUseCase( GptPresenter gptPresenter, GptRepository gptRepository ) { this.gptPresenter = gptPresenter; this.gptRepository = gptRepository; } /// <summary> 初回処理 </summary> public void Begin() { disposable = new CompositeDisposable(); gptPresenter.Bind(); gptPresenter.ExecOnClickAsObservable .Subscribe(async _ => { TMP_InputField input = gptPresenter.GptView.Input; string prompt = input.text; if (!string.IsNullOrEmpty(prompt)) { var response = await gptRepository.GetAPIResponse(prompt); string outputText = response.Choices.FirstOrDefault().Text; string outputText = prompt; outputText = outputText.TrimStart('\n'); } }) .AddTo(disposable); } /// <summary> 終了処理 </summary> public void Finish() { disposable.Dispose(); disposable = null; } }
GptDefine.cs
public class GptDefine { /// <summary> /// APIエンドポイント /// </summary> public const string API_END_POINT = "https://api.openai.com/v1/completions"; /// <summary> /// API KEY /// </summary> public const string API_KEY = "API_KEY"; /// <summary> }
GptPresenter.cs
using UniRx; using System; public class GptPresenter { GptView gptView = null; public GptView GptView { get => gptView; set => value = gptView; } /// <summary> 実行Observable </summary> IObservable<Unit> execOnClickAsObservable = null; public IObservable<Unit> ExecOnClickAsObservable { get => execOnClickAsObservable; } public GptPresenter(GptView gptView) { this.gptView = gptView; } public void Bind() { execOnClickAsObservable = gptView.ExecButton.OnClickAsObservable(); } }
GptRepository.cs
using UnityEngine.Networking; using Newtonsoft.Json; using System; using Cysharp.Threading.Tasks; public class GptRepository { /// <summary> /// APIからレスポンス取得 /// </summary> /// <param name="prompt"></param> /// <returns></returns> /// <exception cref="ArgumentOutOfRangeException"></exception> public async UniTask<GptAPIResponseEntity> GetAPIResponse(string prompt) { GptAPIRequestEntity requestEntity = new() { Prompt = prompt, MaxTokens = 200 }; string requestJson = JsonConvert.SerializeObject(requestEntity, Formatting.Indented); byte[] data = System.Text.Encoding.UTF8.GetBytes(requestJson); string jsonString = null; using (UnityWebRequest request = UnityWebRequest.Post(GptDefine.API_END_POINT, "POST")) { request.uploadHandler = new UploadHandlerRaw(data); request.downloadHandler = new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); request.SetRequestHeader("Authorization", "Bearer " + GptDefine.API_KEY); await request.SendWebRequest(); switch (request.result) { case UnityWebRequest.Result.InProgress: break; case UnityWebRequest.Result.Success: jsonString = request.downloadHandler.text; break; default: throw new ArgumentOutOfRangeException(); } } return JsonConvert.DeserializeObject<GptAPIResponseEntity>(jsonString); } }
GptView.cs
using UnityEngine; using UnityEngine.UI; using TMPro; public class GptView : MonoBehaviour { /// 入力欄 [SerializeField] private TMP_InputField input; public TMP_InputField Input { get => input; } /// 出力欄 [SerializeField] private TextMeshProUGUI output; public TextMeshProUGUI Output { get => output; } /// 実行ボタン [SerializeField] private Button execButton; public Button ExecButton { get => execButton; } }