Paradoxes can play(It is still in the experimental stage and contains many bugs.)

GameServer/Server/CallGS/Handlers/Rogue3D/Rogue3D_SelectTalent.cs

@@ -0,0 +1,47 @@
+using MikuSB.Database.Player;
+using MikuSB.Proto;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace MikuSB.GameServer.Server.CallGS.Handlers.Rogue3D;
+
+// Selects the Rogue3D talent and persists it as player attribute (GroupId=124, TalentId=7).
+// param: {"nTalentId": int}
+// Response: {} on success, {"sErr": "key"} on failure
+[CallGSApi("Rogue3D_SelectTalent")]
+public class Rogue3D_SelectTalent : ICallGSHandler
+{
+    private const uint GroupId = 124;
+    private const uint TalentIdSid = 7;
+
+    public async Task Handle(Connection connection, string param, ushort seqNo)
+    {
+        var req = JsonSerializer.Deserialize<SelectTalentParam>(param);
+        if (req == null)
+        {
+            await CallGSRouter.SendScript(connection, "Rogue3D_SelectTalent", "{}");
+            return;
+        }
+
+        var player = connection.Player!;
+        var attr = player.Data.Attrs.FirstOrDefault(x => x.Gid == GroupId && x.Sid == TalentIdSid);
+        if (attr == null)
+        {
+            attr = new PlayerAttr { Gid = GroupId, Sid = TalentIdSid };
+            player.Data.Attrs.Add(attr);
+        }
+        attr.Val = req.TalentId;
+
+        var sync = new NtfSyncPlayer();
+        sync.Custom[player.ToPackedAttrKey(GroupId, TalentIdSid)] = attr.Val;
+        sync.Custom[player.ToShiftedAttrKey(GroupId, TalentIdSid)] = attr.Val;
+
+        await CallGSRouter.SendScript(connection, "Rogue3D_SelectTalent", "{}", sync);
+    }
+}
+
+internal sealed class SelectTalentParam
+{
+    [JsonPropertyName("nTalentId")]
+    public uint TalentId { get; set; }
+}