baseline: OpenMU upstream b5a0961 (fresh source)

src/GameServer/RemoteView/ItemSerializer075.cs

@@ -0,0 +1,70 @@
+// <copyright file="ItemSerializer075.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.GameServer.RemoteView;
+
+using System.Runtime.InteropServices;
+using MUnique.OpenMU.DataModel;
+using MUnique.OpenMU.DataModel.Configuration;
+using MUnique.OpenMU.DataModel.Configuration.Items;
+using MUnique.OpenMU.DataModel.Entities;
+using MUnique.OpenMU.Network.PlugIns;
+using MUnique.OpenMU.Persistence;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// This item serializer is used to serialize the item data to the data packets for version 0.75.
+/// Each item is serialized into a 3-byte long part of an array.
+/// </summary>
+[Guid("A97F30CF-A189-43A2-9271-D3E5A24CC3FD")]
+[PlugIn]
+[Display(Name = nameof(PlugInResources.ItemSerializer075_Name), Description = nameof(PlugInResources.ItemSerializer075_Description), ResourceType = typeof(PlugInResources))]
+[MinimumClient(0, 75, ClientLanguage.Invariant)]
+public class ItemSerializer075 : IItemSerializer
+{
+    private const byte LuckFlag = 4;
+
+    private const byte SkillFlag = 128;
+
+    private const byte LevelMask = 0x78;
+
+    /// <inheritdoc/>
+    public int NeededSpace => 3;
+
+    /// <inheritdoc/>
+    public int SerializeItem(Span<byte> target, Item item)
+    {
+        item.ThrowNotInitializedProperty(item.Definition is null, nameof(item.Definition));
+        target[0] = (byte)(item.Definition.Number & 0x0F);
+        target[0] |= (byte)(item.Definition.Group << 4);
+
+        target[1] = (byte)((item.Level << 3) & LevelMask);
+
+        var itemOption = item.ItemOptions.FirstOrDefault(o => o.ItemOption?.OptionType == ItemOptionTypes.Option);
+        if (itemOption != null)
+        {
+            target[1] |= (byte)(itemOption.Level & 3);
+        }
+
+        if (item.ItemOptions.Any(o => o.ItemOption?.OptionType == ItemOptionTypes.Luck))
+        {
+            target[1] |= LuckFlag;
+        }
+
+        if (item.HasSkill)
+        {
+            target[1] |= SkillFlag;
+        }
+
+        target[2] = item.Durability();
+
+        return this.NeededSpace;
+    }
+
+    /// <inheritdoc />
+    public Item DeserializeItem(Span<byte> array, GameConfiguration gameConfiguration, IContext persistenceContext)
+    {
+        throw new NotImplementedException();
+    }
+}