baseline: OpenMU upstream b5a0961 (fresh source)

src/GameLogic/BackupItemStorage.cs

@@ -0,0 +1,44 @@
+// <copyright file="BackupItemStorage.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.GameLogic;
+
+/// <summary>
+/// A storage which keeps items backed up - to be able to revert them after cancellation of an action.
+/// </summary>
+public class BackupItemStorage
+{
+    private readonly IList<(Item Item, byte Slot)> _initialItemStates;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="BackupItemStorage"/> class.
+    /// </summary>
+    /// <param name="itemStorage">The item storage.</param>
+    public BackupItemStorage(ItemStorage itemStorage)
+    {
+        var items = new List<Item>();
+        items.AddRange(itemStorage.Items);
+        this.Items = items;
+        this.Money = itemStorage.Money;
+        this._initialItemStates = this.Items.Select(item => (item, item.ItemSlot)).ToList();
+    }
+
+    /// <summary>
+    /// Gets or sets the items.
+    /// </summary>
+    public ICollection<Item> Items { get; set; }
+
+    /// <summary>
+    /// Gets or sets the money.
+    /// </summary>
+    public int Money { get; set; }
+
+    /// <summary>
+    /// Restores the initial item states.
+    /// </summary>
+    public void RestoreItemStates()
+    {
+        this._initialItemStates.ForEach(state => state.Item.ItemSlot = state.Slot);
+    }
+}