From bea196e4b63af688019071c2fa3145b083b8371b Mon Sep 17 00:00:00 2001
From: Ottermandias <nickroederspam+git1@gmail.com>
Date: Thu, 28 Jan 2021 11:37:36 +0100
Subject: [PATCH] added function to redraw all actors or actors with specific
 names (inspired by / shamelessly stolen from Anamnesis).

---
 Penumbra/Game/RefreshActors.cs | 62 ++++++++++++++++++++++++++++++++++
 Penumbra/Plugin.cs             |  9 +++++
 Penumbra/UI/TabSettings.cs     |  1 +
 3 files changed, 72 insertions(+)
 create mode 100644 Penumbra/Game/RefreshActors.cs

diff --git a/Penumbra/Game/RefreshActors.cs b/Penumbra/Game/RefreshActors.cs
new file mode 100644
index 00000000..c5da4c47
--- /dev/null
+++ b/Penumbra/Game/RefreshActors.cs
@@ -0,0 +1,62 @@
+using System.Runtime.InteropServices;
+using Dalamud.Game.ClientState.Actors;
+using Dalamud.Game.ClientState.Actors.Types;
+using System.Threading.Tasks;
+
+namespace Penumbra
+{
+    public static class RefreshActors
+    {
+        private const int ObjectKindOffset = 0x008C;
+        private const int RenderModeOffset = 0x0104;
+        private const int RenderTaskDelay  = 75;
+
+        private enum RenderMode : int
+        {
+            Draw   = 0,
+            Unload = 2
+        }
+
+        private static async void Redraw(Actor actor)
+        {
+            var ptr = actor.Address;
+            var objectKindPtr = ptr + ObjectKindOffset;
+            var renderModePtr = ptr + RenderModeOffset;
+
+            async void DrawObject()
+            {
+                Marshal.WriteInt32(renderModePtr, (int) RenderMode.Unload);
+                await Task.Delay(RenderTaskDelay);
+                Marshal.WriteInt32(renderModePtr, (int) RenderMode.Draw);
+            }
+
+            if (actor.ObjectKind == Dalamud.Game.ClientState.Actors.ObjectKind.Player)
+            {
+                Marshal.WriteByte(objectKindPtr, (byte) Dalamud.Game.ClientState.Actors.ObjectKind.BattleNpc);
+                DrawObject();
+                await Task.Delay(RenderTaskDelay);
+                Marshal.WriteByte(objectKindPtr, (byte) Dalamud.Game.ClientState.Actors.ObjectKind.Player);
+                Marshal.WriteInt32(renderModePtr, (int) RenderMode.Draw);
+            }
+            else
+                DrawObject();
+            await Task.Delay(RenderTaskDelay);
+        }
+
+        public static void RedrawSpecific(ActorTable actors, string name)
+        {
+            if (name?.Length == 0)
+                RedrawAll(actors);
+
+            foreach (var actor in actors)
+                if (actor.Name == name)
+                    Redraw(actor);
+        }
+
+        public static void RedrawAll(ActorTable actors)
+        {
+            foreach (var actor in actors)
+                Redraw(actor);
+        }
+    }
+}
diff --git a/Penumbra/Plugin.cs b/Penumbra/Plugin.cs
index 1bf4bf39..b8ee98b2 100644
--- a/Penumbra/Plugin.cs
+++ b/Penumbra/Plugin.cs
@@ -1,3 +1,4 @@
+using System.Linq;
 using Dalamud.Game.Command;
 using Dalamud.Plugin;
 using EmbedIO;
@@ -118,6 +119,14 @@ namespace Penumbra
                             $"Reloaded Penumbra mods. You have {ModManager.Mods.ModSettings.Count} mods, {ModManager.Mods.EnabledMods.Length} of which are enabled."
                         );
                         break;
+                    }
+                    case "redraw":
+                    {
+                        if (args.Length > 1)
+                            RefreshActors.RedrawSpecific(PluginInterface.ClientState.Actors, string.Join(" ", args.Skip(1)));
+                        else
+                            RefreshActors.RedrawAll(PluginInterface.ClientState.Actors);
+                        break;
                     }
                 }
 
diff --git a/Penumbra/UI/TabSettings.cs b/Penumbra/UI/TabSettings.cs
index 2ebab4d4..a6e4d389 100644
--- a/Penumbra/UI/TabSettings.cs
+++ b/Penumbra/UI/TabSettings.cs
@@ -64,6 +64,7 @@ namespace Penumbra.UI
                 {
                     _config.IsEnabled = enabled;
                     _configChanged = true;
+                    RefreshActors.RedrawAll(_base._plugin.PluginInterface.ClientState.Actors);
                 }
             }