Add the player select applet. (#537)

This introduces the somewhat completed version of the Player Select
Applet, allowing users to select either a user or a guest from the UI.
Note: Selecting the guest more then once currently does not work.

closes https://github.com/Ryubing/Ryujinx/issues/532

src/Ryujinx.HLE/HOS/Applets/PlayerSelect/PlayerSelectApplet.cs

@@ -26,10 +26,20 @@ namespace Ryujinx.HLE.HOS.Applets
         {
             _normalSession = normalSession;
             _interactiveSession = interactiveSession;
-
-            // TODO(jduncanator): Parse PlayerSelectConfig from input data
-            _normalSession.Push(BuildResponse());
-
+            
+            UserProfile selected = _system.Device.UIHandler.ShowPlayerSelectDialog();
+            if (selected == null)
+            {
+                _normalSession.Push(BuildResponse());
+            }
+            else if (selected.UserId == new UserId("00000000000000000000000000000080"))
+            {
+                _normalSession.Push(BuildGuestResponse());
+            }
+            else
+            {
+                _normalSession.Push(BuildResponse(selected));
+            }
             AppletStateChanged?.Invoke(this, null);
 
             _system.ReturnFocus();
@@ -37,16 +47,34 @@ namespace Ryujinx.HLE.HOS.Applets
             return ResultCode.Success;
         }
 
-        private byte[] BuildResponse()
+        private byte[] BuildResponse(UserProfile selectedUser)
         {
-            UserProfile currentUser = _system.AccountManager.LastOpenedUser;
-
             using MemoryStream stream = MemoryStreamManager.Shared.GetStream();
             using BinaryWriter writer = new(stream);
 
             writer.Write((ulong)PlayerSelectResult.Success);
 
-            currentUser.UserId.Write(writer);
+            selectedUser.UserId.Write(writer);
+
+            return stream.ToArray();
+        }
+        
+        private byte[] BuildGuestResponse()
+        {
+            using MemoryStream stream = MemoryStreamManager.Shared.GetStream();
+            using BinaryWriter writer = new(stream);
+            
+            writer.Write(new byte());
+
+            return stream.ToArray();
+        }
+        
+        private byte[] BuildResponse()
+        {
+            using MemoryStream stream = MemoryStreamManager.Shared.GetStream();
+            using BinaryWriter writer = new(stream);
+            
+            writer.Write((ulong)PlayerSelectResult.Failure);
 
             return stream.ToArray();
         }

src/Ryujinx.HLE/Ryujinx.HLE.csproj

@@ -48,6 +48,7 @@
     <EmbeddedResource Include="HOS\Applets\SoftwareKeyboard\Resources\Icon_BtnB.png" />
     <EmbeddedResource Include="HOS\Applets\SoftwareKeyboard\Resources\Icon_KeyF6.png" />
     <EmbeddedResource Include="HOS\Services\Account\Acc\DefaultUserImage.jpg" />
+    <EmbeddedResource Include="HOS\Services\Account\Acc\GuestUserImage.jpg" />
   </ItemGroup>
 
 </Project>

src/Ryujinx.HLE/UI/IHostUIHandler.cs

@@ -1,4 +1,5 @@
 using Ryujinx.HLE.HOS.Applets;
+using Ryujinx.HLE.HOS.Services.Account.Acc;
 using Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.ApplicationProxy.Types;
 
 namespace Ryujinx.HLE.UI
@@ -59,5 +60,11 @@ namespace Ryujinx.HLE.UI
         /// Gets fonts and colors used by the host.
         /// </summary>
         IHostUITheme HostUITheme { get; }
+        
+        
+        /// <summary>
+        /// Displays the player select dialog and returns the selected profile.
+        /// </summary>
+        UserProfile ShowPlayerSelectDialog();
     }
 }