Add UpdateCharacterSheet to NwPlayer. (#814)

Author: jhett12321

NWN.Anvil/src/main/API/Objects/NwPlayer.cs

@@ -1685,6 +1685,36 @@ public void UnpossessCreature()
       Player.PossessCreature(NwObject.Invalid, (byte)NWN.Native.API.AssociateType.None);
     }
 
+    /// <summary>
+    /// Refreshes the player's character sheet.
+    /// </summary>
+    public async Task UpdateCharacterSheet()
+    {
+      await NwTask.Delay(TimeSpan.FromSeconds(0.5f));
+      if (!IsValid)
+      {
+        return;
+      }
+
+      CNWSPlayerCharSheetGUI? charSheet = Player.m_pCharSheetGUI;
+      if (charSheet == null)
+      {
+        return;
+      }
+
+      uint updatesRequired = charSheet.ComputeCharacterSheetUpdateRequired(Player);
+      if (updatesRequired == 0)
+      {
+        return;
+      }
+
+      CNWSMessage? message = LowLevel.ServerExoApp.GetNWSMessage();
+      if (message != null)
+      {
+        message.WriteGameObjUpdate_CharacterSheet(Player, updatesRequired);
+      }
+    }
+
     /// <summary>
     /// Vibrates the player's device or controller. Does nothing if vibration is not supported.
     /// </summary>