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Src/Dialogue/IDialogueService.cs

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+using System;
+using System.Collections;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using BITKit;
+using Cysharp.Threading.Tasks;
+
+namespace Net.Project.B.Dialogue
+{
+    /// <summary>
+    /// 对话服务
+    /// </summary>
+    public interface IDialogueService
+    {
+        /// <summary>
+        /// 所有对话
+        /// </summary>
+        IReadOnlyDictionary<int, IDialogueData> Dialogues { get; }
+
+        /// <summary>
+        /// 对话开始
+        /// </summary>
+        public event Func<IDialogueData, UniTask> OnDialogueStart;
+
+        /// <summary>
+        /// 对话结束
+        /// </summary>
+        public event Action<IDialogueData> OnDialogueEnd;
+
+        /// <summary>
+        /// 对话选择
+        /// </summary>
+        public event Func<IDialogueData, IReadOnlyCollection<IDialogueChoice>, UniTask<int>> OnDialogueChoose;
+
+        /// <summary>
+        /// 对话选择回调
+        /// </summary>
+        public event Action<IDialogueData, IDialogueChoice> OnDialogueChose;
+
+        /// <summary>
+        /// 开启对话
+        /// </summary>
+        /// <param name="dialogueData">对话</param>
+        /// <returns></returns>
+        UniTask CreateDialogue(IDialogueData dialogueData);
+
+        UniTask<int> CreateDialogue(IDialogueData dialogueData, IReadOnlyCollection<IDialogueChoice> dialogueChoices);
+    }
+
+    public class DialogueService : IDialogueService
+    {
+        public IReadOnlyDictionary<int, IDialogueData> Dialogues => _dialogues;
+
+        public event Func<IDialogueData, UniTask> OnDialogueStart;
+        public event Action<IDialogueData> OnDialogueEnd;
+        public event Func<IDialogueData, IReadOnlyCollection<IDialogueChoice>, UniTask<int>> OnDialogueChoose;
+        public event Action<IDialogueData, IDialogueChoice> OnDialogueChose;
+
+        public async UniTask CreateDialogue(IDialogueData dialogueData)
+        {
+            if (_dialogues.TryAdd(dialogueData.Identity, dialogueData) is false)
+            {
+                dialogueData.Identity = _dialogues.Keys.Max() + 1;
+                _dialogues.TryAdd(dialogueData.Identity, dialogueData);
+            }
+
+            await OnDialogueStart.UniTaskFunc(dialogueData);
+
+            OnDialogueEnd?.Invoke(dialogueData);
+        }
+
+        public async UniTask<int> CreateDialogue(IDialogueData dialogueData,
+            IReadOnlyCollection<IDialogueChoice> dialogueChoices)
+        {
+            if (OnDialogueChoose is null)
+            {
+                throw new NullReferenceException("OnDialogueChoose is null,unable to create dialogue");
+            }
+
+            var task = OnDialogueChoose.Invoke(dialogueData, dialogueChoices);
+            var index = await task;
+
+            OnDialogueChose?.Invoke(dialogueData, dialogueChoices.ElementAt(index));
+
+            return index;
+        }
+
+        private readonly ConcurrentDictionary<int, IDialogueData> _dialogues = new();
+    }
+}