Basic working skeleton in OpenGL and UWP.

GitOrigin-RevId: 762b683654e20eb28346d9b2de7fbb8c826a2966

Jumpy.Shared/Jumpy.Shared.projitems

@@ -9,5 +9,7 @@
     <Import_RootNamespace>Jumpy.Shared</Import_RootNamespace>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="$(MSBuildThisFileDirectory)KeyboardInput.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)JumpyGame.cs" />
   </ItemGroup>
 </Project>

Jumpy.Shared/JumpyGame.cs

@@ -0,0 +1,64 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+
+using System.Collections.Generic;
+
+namespace Jumpy {
+  public class JumpyGame : Game {
+    GraphicsDeviceManager graphics;
+    SpriteBatch spriteBatch;
+    SpriteFont font;
+    KeyboardInput keyboardInput = new KeyboardInput();
+
+    public JumpyGame() {
+      graphics = new GraphicsDeviceManager(this);
+      Content.RootDirectory = "Content";
+    }
+
+    // Performs initialization that's needed before starting to run.
+    protected override void Initialize() {
+      base.Initialize();
+    }
+
+    // Called once per game. Loads all game content.
+    protected override void LoadContent() {
+      spriteBatch = new SpriteBatch(GraphicsDevice);
+      font = Content.Load<SpriteFont>("font");
+    }
+
+    // Called once per game. Unloads all game content.
+    protected override void UnloadContent() {
+      // TODO: Unload any non ContentManager content here.
+    }
+
+    // Updates the game world.
+    protected override void Update(GameTime gameTime) {
+      keyboardInput.Update();
+      List<Keys> keysDown = keyboardInput.NewKeysDown();
+
+      //if (keysDown.Contains(Keys.F12))
+      //{
+      //    SetFullScreen(!fullScreen);
+      //}
+
+      if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed ||
+          keysDown.Contains(Keys.Escape)) {
+        Exit();
+      }
+
+      base.Update(gameTime);
+    }
+
+    // Called when the game should draw itself.
+    protected override void Draw(GameTime gameTime) {
+      GraphicsDevice.Clear(Color.CornflowerBlue);
+
+      spriteBatch.Begin();
+      spriteBatch.DrawString(font, "hello world", new Vector2(100, 100), Color.Black);
+      spriteBatch.End();
+
+      base.Draw(gameTime);
+    }
+  }
+}

Jumpy.Shared/KeyboardInput.cs

@@ -0,0 +1,24 @@
+using Microsoft.Xna.Framework.Input;
+using System.Collections.Generic;
+
+namespace Jumpy {
+  public class KeyboardInput {
+    private KeyboardState oldState = Keyboard.GetState();
+    private List<Keys> newKeysDown = new List<Keys>();
+
+    public void Update() {
+      KeyboardState newState = Keyboard.GetState();
+      newKeysDown.Clear();
+      foreach (Keys k in newState.GetPressedKeys()) {
+        if (!oldState.IsKeyDown(k)) {
+          newKeysDown.Add(k);
+        }
+      }
+      oldState = newState;
+    }
+
+    public List<Keys> NewKeysDown() {
+      return newKeysDown;
+    }
+  }
+}