feat: add achievement links

ChatTwo/GameFunctions/GameFunctions.cs

@@ -29,6 +29,9 @@ internal unsafe class GameFunctions : IDisposable {
     [Signature("48 89 5C 24 ?? 57 48 83 EC 20 48 8B FA 48 8B D9 E8 ?? ?? ?? ?? 48 8B 8B ?? ?? ?? ?? 48 85 C9", Fallibility = Fallibility.Fallible)]
     private readonly delegate* unmanaged<AgentInterface*, ulong, byte> _openPartyFinder = null!;
 
+    [Signature("E8 ?? ?? ?? ?? EB 42 48 8B 47 30", Fallibility = Fallibility.Fallible)]
+    private readonly delegate* unmanaged<AgentInterface*, uint, void> _openAchievement = null!;
+
     #endregion
 
     #region Hooks
@@ -240,6 +243,17 @@ internal unsafe class GameFunctions : IDisposable {
         }
     }
 
+    internal void OpenAchievement(uint id) {
+        if (this._openAchievement == null) {
+            return;
+        }
+
+        var agent = Framework.Instance()->GetUiModule()->GetAgentModule()->GetAgentByInternalId(AgentId.Achievement);
+        if (agent != null) {
+            this._openAchievement(agent, id);
+        }
+    }
+
     private readonly IntPtr _placeholderNamePtr = Marshal.AllocHGlobal(128);
     private readonly string _placeholder = $"<{Guid.NewGuid():N}>";
     private string? _replacementName;

ChatTwo/PayloadHandler.cs

@@ -190,6 +190,10 @@ internal sealed class PayloadHandler {
                 this.Ui.Plugin.Functions.OpenPartyFinder(pf.Id);
                 break;
             }
+            case AchievementPayload achievement: {
+                this.Ui.Plugin.Functions.OpenAchievement(achievement.Id);
+                break;
+            }
             case RawPayload raw: {
                 if (Equals(raw, ChunkUtil.PeriodicRecruitmentLink)) {
                     GameFunctions.GameFunctions.OpenPartyFinder();

ChatTwo/Util/ChunkUtil.cs

@@ -73,6 +73,11 @@ internal static class ChunkUtil {
                         var reader = new BinaryReader(new MemoryStream(rawPayload.Data[4..]));
                         var id = GetInteger(reader);
                         link = new PartyFinderPayload(id);
+                    } else if (rawPayload.Data.Length > 5 && rawPayload.Data[1] == 0x27 && rawPayload.Data[3] == 0x06) {
+                        // achievement payload
+                        var reader = new BinaryReader(new MemoryStream(rawPayload.Data[4..]));
+                        var id = GetInteger(reader);
+                        link = new AchievementPayload(id);
                     } else if (Equals(rawPayload, RawPayload.LinkTerminator)) {
                         link = null;
                     } else if (Equals(rawPayload, PeriodicRecruitmentLink)) {

ChatTwo/Util/Payloads.cs

@@ -19,3 +19,21 @@ internal class PartyFinderPayload : Payload {
         throw new NotImplementedException();
     }
 }
+
+internal class AchievementPayload : Payload {
+    public override PayloadType Type => (PayloadType) 0x51;
+
+    internal uint Id { get; }
+
+    internal AchievementPayload(uint id) {
+        this.Id = id;
+    }
+
+    protected override byte[] EncodeImpl() {
+        throw new NotImplementedException();
+    }
+
+    protected override void DecodeImpl(BinaryReader reader, long endOfStream) {
+        throw new NotImplementedException();
+    }
+}