From 7e4f6e1ed704f4e5829827bcf931c754124d089e Mon Sep 17 00:00:00 2001
From: Anna <git@anna.lgbt>
Date: Tue, 31 May 2022 23:27:18 -0400
Subject: [PATCH] feat: add instanced inviting

---
 ChatTwo/GameFunctions/Party.cs | 21 ++++++++++++++++++++-
 ChatTwo/PayloadHandler.cs      | 23 +++++++++++++++--------
 2 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/ChatTwo/GameFunctions/Party.cs b/ChatTwo/GameFunctions/Party.cs
index 58bdf47..30dcb70 100755
--- a/ChatTwo/GameFunctions/Party.cs
+++ b/ChatTwo/GameFunctions/Party.cs
@@ -13,6 +13,9 @@ internal sealed unsafe class Party {
     [Signature("48 83 EC 38 41 B1 09", Fallibility = Fallibility.Fallible)]
     private readonly delegate* unmanaged<IntPtr, ulong, ushort, byte> _inviteToPartyContentId = null!;
 
+    [Signature("E8 ?? ?? ?? ?? E9 ?? ?? ?? ?? 48 8B 83 ?? ?? ?? ?? 48 85 C0 74 62", Fallibility = Fallibility.Fallible)]
+    private readonly delegate* unmanaged<IntPtr, ulong, byte> _inviteToPartyInInstance = null!;
+
     [Signature("E8 ?? ?? ?? ?? E9 ?? ?? ?? ?? 49 8B 56 20", Fallibility = Fallibility.Fallible)]
     private readonly delegate* unmanaged<AgentInterface*, byte*, ushort, ulong, void> _promote = null!;
 
@@ -40,7 +43,7 @@ internal sealed unsafe class Party {
     }
 
     internal void InviteOtherWorld(ulong contentId) {
-        if (this._inviteToPartyContentId != null) {
+        if (this._inviteToPartyContentId == null) {
             return;
         }
 
@@ -55,6 +58,22 @@ internal sealed unsafe class Party {
         }
     }
 
+    internal void InviteInInstance(ulong contentId) {
+        if (this._inviteToPartyInInstance == null) {
+            return;
+        }
+
+        // 6.11: 214A55
+        var a1 = this.Plugin.Functions.GetInfoProxyByIndex(1);
+        if (contentId != 0) {
+            // third param is world, but it requires a specific world
+            // if they're not on that world, it will fail
+            // pass 0 and it will work on any world EXCEPT for the world the
+            // current player is on
+            this._inviteToPartyInInstance(a1, contentId);
+        }
+    }
+
     internal void Kick(string name, ulong contentId) {
         if (this._kick == null) {
             return;
diff --git a/ChatTwo/PayloadHandler.cs b/ChatTwo/PayloadHandler.cs
index 2bb1530..298abd4 100755
--- a/ChatTwo/PayloadHandler.cs
+++ b/ChatTwo/PayloadHandler.cs
@@ -450,17 +450,24 @@ internal sealed class PayloadHandler {
             var isLeader = party.Length == 0 || this.Ui.Plugin.ClientState.LocalContentId == leader;
             var member = party.FirstOrDefault(member => member.Name.TextValue == player.PlayerName && member.World.Id == player.World.RowId);
             var isInParty = member != default;
+            var inPartyInstance = this.Ui.Plugin.DataManager.GetExcelSheet<TerritoryType>()!.GetRow(this.Ui.Plugin.ClientState.TerritoryType)?.TerritoryIntendedUse is (41 or 47 or 48 or 52 or 53);
             if (isLeader) {
-                if (!isInParty && ImGui.BeginMenu("Invite to Party")) {
-                    if (ImGui.Selectable("Same world")) {
-                        this.Ui.Plugin.Functions.Party.InviteSameWorld(player.PlayerName, (ushort) player.World.RowId, chunk.Message?.ContentId ?? 0);
-                    }
+                if (!isInParty) {
+                    if (inPartyInstance) {
+                        if (chunk.Message?.ContentId is not null or 0 && ImGui.Selectable("Invite to Party")) {
+                            this.Ui.Plugin.Functions.Party.InviteInInstance(chunk.Message!.ContentId);
+                        }
+                    } else if (ImGui.BeginMenu("Invite to Party")) {
+                        if (ImGui.Selectable("Same world")) {
+                            this.Ui.Plugin.Functions.Party.InviteSameWorld(player.PlayerName, (ushort) player.World.RowId, chunk.Message?.ContentId ?? 0);
+                        }
 
-                    if (chunk.Message?.ContentId is not null or 0 && ImGui.Selectable("Different world")) {
-                        this.Ui.Plugin.Functions.Party.InviteOtherWorld(chunk.Message!.ContentId);
-                    }
+                        if (chunk.Message?.ContentId is not null or 0 && ImGui.Selectable("Different world")) {
+                            this.Ui.Plugin.Functions.Party.InviteOtherWorld(chunk.Message!.ContentId);
+                        }
 
-                    ImGui.EndMenu();
+                        ImGui.EndMenu();
+                    }
                 }
 
                 if (isInParty && member != null) {