Add new IScene interface.

Shared/IScene.cs

@@ -0,0 +1,7 @@
+using System;
+
+namespace SemiColinGames {
+  public interface IScene : IDisposable {
+    void Draw(bool isRunningSlowly, IWorld iworld, bool paused);
+  }
+}

Shared/Scene.cs

@@ -4,7 +4,7 @@ using Microsoft.Xna.Framework.Graphics;
 using System;
 
 namespace SemiColinGames {
-  public sealed class Scene : IDisposable {
+  public sealed class Scene : IScene {
     const float DESIRED_ASPECT_RATIO = 1920.0f / 1080.0f;
 
     Color backgroundColor = Color.CornflowerBlue;

Shared/Shared.projitems

@@ -12,6 +12,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Camera.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ExtensionMethods.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)FSM.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)IScene.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)IWorld.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)NPC.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ProfilingList.cs" />

Shared/SneakGame.cs

@@ -21,7 +21,7 @@ namespace SemiColinGames {
     readonly Timer updateTimer = new Timer(TARGET_FRAME_TIME / 2.0, "UpdateTimer");
     readonly Timer drawTimer = new Timer(TARGET_FRAME_TIME / 2.0, "DrawTimer");
 
-    Scene scene;
+    IScene scene;
     IWorld world;
 
     public SneakGame() {