From adfef2dad0e424cf6d82481cce40048dd175e880 Mon Sep 17 00:00:00 2001
From: Haselnussbomber <mail@haselnussbomber.de>
Date: Tue, 20 Jan 2026 17:58:27 +0100
Subject: [PATCH] Add MapDiscoveryManager

---
 .../FFXIV/Client/Game/MapDiscoveryManager.cs  | 52 +++++++++++++++++++
 ida/data.yml                                  | 12 +++++
 2 files changed, 64 insertions(+)
 create mode 100644 FFXIVClientStructs/FFXIV/Client/Game/MapDiscoveryManager.cs

diff --git a/FFXIVClientStructs/FFXIV/Client/Game/MapDiscoveryManager.cs b/FFXIVClientStructs/FFXIV/Client/Game/MapDiscoveryManager.cs
new file mode 100644
index 000000000..6fefd7332
--- /dev/null
+++ b/FFXIVClientStructs/FFXIV/Client/Game/MapDiscoveryManager.cs
@@ -0,0 +1,52 @@
+namespace FFXIVClientStructs.FFXIV.Client.Game;
+
+// Client::Game::MapDiscoveryManager
+[GenerateInterop]
+[StructLayout(LayoutKind.Explicit, Size = 0x1024)]
+public unsafe partial struct MapDiscoveryManager {
+    [StaticAddress("48 8D 0D ?? ?? ?? ?? 0F B6 87 ?? ?? ?? ?? 88 05", 3)]
+    public static partial MapDiscoveryManager* Instance();
+
+    /// <summary> Maps with up to 16 discoverable regions </summary>
+    /// <remarks> Index is DiscoveryIndex, used when DiscoveryArrayByte is true (from Map sheet) </remarks>
+    [FieldOffset(0x000), FixedSizeArray] internal FixedSizeArray162<DiscoveryTable16> _mapsWithUpTo16Regions;
+    /// <summary> Maps with up to 32 discoverable regions </summary>
+    /// <remarks> Index is DiscoveryIndex, used when DiscoveryArrayByte is false (from Map sheet) </remarks>
+    [FieldOffset(0xA20), FixedSizeArray] internal FixedSizeArray48<DiscoveryTable32> _mapsWithUpTo32Regions;
+    [FieldOffset(0x1020)] public float ReportCooldown;
+
+    [MemberFunction("48 89 5C 24 ?? 57 48 83 EC ?? 48 8B 05 ?? ?? ?? ?? 8B FA")]
+    public partial bool IsDiscoveryEnabledForMap(uint mapId);
+
+    /// <summary>
+    /// Checks if a map region was discovered.<br/>
+    /// This runs an internal Map sheet lookup!
+    /// </summary>
+    /// <param name="mapId">The Map RowId</param>
+    /// <param name="regionIndex">The region index</param>
+    /// <returns><see langword="true"/> if discovered, <see langword="false"/> otherwise.</returns>
+    [MemberFunction("E8 ?? ?? ?? ?? 84 C0 74 ?? 44 0B F7")]
+    public partial bool IsMapRegionDiscovered(uint mapId, byte regionIndex);
+
+    /// <summary>
+    /// Checks if a map region was discovered, without Map sheet lookup.
+    /// </summary>
+    /// <param name="discoveryIndex">DiscoveryIndex from the Map sheet</param>
+    /// <param name="regionIndex">The region index</param>
+    /// <param name="isMapWithUpTo16Regions">DiscoveryArrayByte from the Map sheet</param>
+    /// <returns><see langword="true"/> if discovered, <see langword="false"/> otherwise.</returns>
+    [MemberFunction("33 C0 4C 8B D1 66 3B C2 7F ?? 45 84 C9 74 ?? B8 ?? ?? ?? ?? 66 3B D0 73 ?? 48 0F BF C2")]
+    public partial bool IsRegionDiscovered(ushort discoveryIndex, byte regionIndex, bool isMapWithUpTo16Regions);
+
+    [GenerateInterop]
+    [StructLayout(LayoutKind.Explicit, Size = 16)]
+    public partial struct DiscoveryTable16 {
+        [FieldOffset(0x00), FixedSizeArray] internal FixedSizeArray16<bool> _discoveries;
+    }
+
+    [GenerateInterop]
+    [StructLayout(LayoutKind.Explicit, Size = 32)]
+    public partial struct DiscoveryTable32 {
+        [FieldOffset(0x00), FixedSizeArray] internal FixedSizeArray32<bool> _discoveries;
+    }
+}
diff --git a/ida/data.yml b/ida/data.yml
index 39dfbbd24..0a745eb4a 100644
--- a/ida/data.yml
+++ b/ida/data.yml
@@ -550,6 +550,17 @@ classes:
       0x140833D90: ResetBGM
       0x140833DE0: SetBGMPlayState # static
       0x140833E10: ctor
+  Client::Game::MapDiscoveryManager:
+    instances:
+      - ea: 0x1429BFFF0
+    funcs:
+      0x140835C00: ReadDiscoveryListPacket
+      0x140835D30: ReadDiscoveryPacket
+      0x140835F40: IsMapRegionDiscovered
+      0x140836290: IsRegionDiscovered
+      0x140836010: SendMapRangeEntered
+      0x140836190: Update
+      0x1408366A0: IsDiscoveryEnabledForMap
   Client::Game::Control::InputManager:
     instances:
       - ea: 0x1427AC640
@@ -5957,6 +5968,7 @@ classes:
       0x140B9F380: HandleTreasureFadeOutPacket
       0x140B9F410: HandleWeatherChangePacket
       0x140B9F430: HandleDiscoveryPacket
+      0x140B9F450: HandleDiscoveryListPacket
       0x140B9F470: HandlePlayerTitleListPacket
       0x140B9F4C0: HandleUpdatePartyPositionsPacket
       0x140B9F4F0: HandleUpdateAllianceNormalPositionsPacket