67 lines
1.9 KiB
C#
67 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using Ichni.RhythmGame;
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using UnityEngine;
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namespace Ichni.Editor.Commands
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{
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public static class CommandManager
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{
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private static readonly Stack<ICommand> undoStack = new Stack<ICommand>();
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private static readonly Stack<ICommand> redoStack = new Stack<ICommand>();
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/// <summary>
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/// 全局指令拦截与推送入口。任何受撤回保护的修改都应通过此处执行。
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/// </summary>
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public static void ExecuteCommand(ICommand command)
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{
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if (command == null) return;
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if (undoStack.Count > 0)
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{
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var topCommand = undoStack.Peek();
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// 尝试拦截短时间内的连续修改并归并为一步
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if (topCommand.TryMerge(command))
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{
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topCommand.Execute();
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return;
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}
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}
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// 新操作彻底切断原本可能存在的重做未来
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command.Execute();
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undoStack.Push(command);
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redoStack.Clear();
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}
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public static GameElement ExecuteCreate(Func<GameElement> createAction)
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{
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var command = new CreateElementCommand(createAction);
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ExecuteCommand(command);
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return command.CreatedElement;
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}
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public static void Undo()
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{
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if (undoStack.Count > 0)
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{
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var command = undoStack.Pop();
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command.Undo();
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redoStack.Push(command);
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Debug.Log("[Command] 执行撤销 (Undo)");
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}
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}
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public static void Redo()
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{
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if (redoStack.Count > 0)
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{
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var command = redoStack.Pop();
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command.Redo();
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undoStack.Push(command);
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Debug.Log("[Command] 执行重做 (Redo)");
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}
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}
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}
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}
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