Add Generic Helper (#2403)

Dalamud/Game/Gui/GameGui.cs

@@ -182,6 +182,10 @@ internal sealed unsafe class GameGui : IInternalDisposableService, IGameGui
         return (nint)unitManager->GetAddonByName(name, index);
     }
 
+    /// <inheritdoc/>
+    public T* GetAddonByName<T>(string name, int index = 1) where T : unmanaged
+        => (T*)this.GetAddonByName(name, index).Address;
+
     /// <inheritdoc/>
     public AgentInterfacePtr GetAgentById(int id)
     {
@@ -328,7 +332,7 @@ internal sealed unsafe class GameGui : IInternalDisposableService, IGameGui
         return retVal;
     }
 
-    private unsafe void SetUiVisibilityDetour(RaptureAtkModule* thisPtr, bool uiVisible)
+    private void SetUiVisibilityDetour(RaptureAtkModule* thisPtr, bool uiVisible)
     {
         this.setUiVisibilityHook.Original(thisPtr, uiVisible);
 
@@ -441,6 +445,10 @@ internal class GameGuiPluginScoped : IInternalDisposableService, IGameGui
     public AtkUnitBasePtr GetAddonByName(string name, int index = 1)
         => this.gameGuiService.GetAddonByName(name, index);
 
+    /// <inheritdoc/>
+    public unsafe T* GetAddonByName<T>(string name, int index = 1) where T : unmanaged
+        => (T*)this.gameGuiService.GetAddonByName(name, index).Address;
+
     /// <inheritdoc/>
     public AgentInterfacePtr GetAgentById(int id)
         => this.gameGuiService.GetAgentById(id);

Dalamud/Plugin/Services/IGameGui.cs

@@ -89,6 +89,15 @@ public unsafe interface IGameGui
     /// <returns>A pointer wrapper to the addon.</returns>
     public AtkUnitBasePtr GetAddonByName(string name, int index = 1);
 
+    /// <summary>
+    /// Gets the pointer to the Addon with the given name and index.
+    /// </summary>
+    /// <param name="name">Name of addon to find.</param>
+    /// <param name="index">Index of addon to find (1-indexed).</param>
+    /// <returns>A pointer wrapper to the addon.</returns>
+    /// <typeparam name="T">Type of addon pointer AtkUnitBase or any derived struct.</typeparam>
+    public T* GetAddonByName<T>(string name, int index = 1) where T : unmanaged;
+
     /// <summary>
     /// Find the agent associated with an addon, if possible.
     /// </summary>