Newtonsoft.Json -> System.Text.Json for Sprites.cs

DesktopGL/DesktopGL.csproj

@@ -27,6 +27,7 @@
     <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.0.1641" />
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.0.1641" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="System.Text.Json" Version="5.0.2" />
   </ItemGroup>
   <Import Project="..\Shared\Shared.projitems" Label="Shared" />
 </Project>

Shared/Sprites.cs

@@ -1,7 +1,7 @@
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Content;
-using Newtonsoft.Json.Linq;
 using System.Collections.Generic;
+using System.Text.Json;
 
 namespace SemiColinGames {
   public static class Sprites {
@@ -61,29 +61,32 @@ namespace SemiColinGames {
       Texture = texture;
       animations = new Dictionary<string, SpriteAnimation>();
 
-      JObject json = JObject.Parse(metadataJson);
+      JsonElement jsonRoot = JsonDocument.Parse(metadataJson).RootElement;
 
       frames = new List<Frame>();
-      foreach (JToken child in json.SelectToken("frames").Children()) {
+      foreach (JsonElement child in jsonRoot.GetProperty("frames").EnumerateArray()) {
+        JsonElement frame = child.GetProperty("frame");
         Rectangle source = new Rectangle(
-            child.SelectToken("frame.x").Value<int>(),
-            child.SelectToken("frame.y").Value<int>(),
-            child.SelectToken("frame.w").Value<int>(),
-            child.SelectToken("frame.h").Value<int>());
-        double duration = child.SelectToken("duration").Value<double>() / 1000;
+            frame.GetProperty("x").GetInt32(),
+            frame.GetProperty("y").GetInt32(),
+            frame.GetProperty("w").GetInt32(),
+            frame.GetProperty("h").GetInt32());
+
+        double duration = child.GetProperty("duration").GetDouble() / 1000;
         frames.Add(new Frame(source, duration));
       }
+
       // We assume that all frames are the same size (which right now is assured by the
       // Aseprite-based spritesheet export process).
       Width = frames[0].Source.Width;
       Height = frames[0].Source.Height;
 
-      JToken frameTags = json.SelectToken("meta.frameTags");
-      foreach (JToken child in frameTags.Children()) {
-        string name = child.SelectToken("name").Value<string>();
-        int start = child.SelectToken("from").Value<int>();
-        int end = child.SelectToken("to").Value<int>();
-        string directionString = child.SelectToken("direction").Value<string>();
+      JsonElement frameTags = jsonRoot.GetProperty("meta").GetProperty("frameTags");
+      foreach (JsonElement child in frameTags.EnumerateArray()) {
+        string name = child.GetProperty("name").GetString();
+        int start = child.GetProperty("from").GetInt32();
+        int end = child.GetProperty("to").GetInt32();
+        string directionString = child.GetProperty("direction").GetString();
         AnimationDirection direction = directionString == "pingpong" ?
             AnimationDirection.PingPong : AnimationDirection.Forward;
         double duration = 0;

UWP/UWP.csproj

@@ -179,18 +179,19 @@
     <PackageReference Include="SharpDX.XAudio2">
       <Version>4.2.0</Version>
     </PackageReference>
+    <PackageReference Include="System.Text.Json">
+      <Version>5.0.2</Version>
+    </PackageReference>
   </ItemGroup>
   <Import Project="..\Shared\Shared.projitems" Label="Shared" />
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
     <VisualStudioVersion>14.0</VisualStudioVersion>
   </PropertyGroup>
   <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
-
   <ItemGroup>
     <PackageReference Include="MonoGame.Framework.WindowsUniversal" Version="3.8.0.*" />
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.0.*" />
   </ItemGroup>
-  
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">