Added How-To-Play info screen at the beginning of the game

BreakoutParty/BreakoutParty.csproj

@@ -76,6 +76,7 @@
     <Compile Include="Gamestates\Gamestate.cs" />
     <Compile Include="Gamestates\GamestateManager.cs" />
     <Compile Include="Gamestates\HighscoreState.cs" />
+    <Compile Include="Gamestates\HowToPlayState.cs" />
     <Compile Include="Gamestates\MainMenuGamestate.cs" />
     <Compile Include="Gamestates\OptionsState.cs" />
     <Compile Include="InputActions.cs" />
@@ -140,6 +141,9 @@
     <Content Include="Content\GameOver.wav">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="Content\HowToPlay.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="Content\LevelUp.wav">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>

BreakoutParty/BreakoutPartyGame.cs

@@ -88,7 +88,7 @@ protected override void Initialize()
             Batch = new SpriteBatch(Graphics.GraphicsDevice);
             AudioManager = new SoundManager(this);
             GameManager = new GamestateManager(this);
-            GameManager.Add(new MainMenuGamestate());
+            GameManager.Add(new HowToPlayState());
         }
 
         /// <summary>

BreakoutParty/Gamestates/HowToPlayState.cs

@@ -0,0 +1,80 @@
+using BreakoutParty.Sounds;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BreakoutParty.Gamestates
+{
+    /// <summary>
+    /// "How To Play" information screen.
+    /// </summary>
+    sealed class HowToPlayState : Gamestate
+    {
+        /// <summary>
+        /// <see cref="SpriteBatch"/> for drawing.
+        /// </summary>
+        private SpriteBatch _Batch;
+
+        /// <summary>
+        /// Texture showing how to play.
+        /// </summary>
+        private Texture2D _HowToPlayTexture;
+
+        /// <summary>
+        /// Initializes the <see cref="Gamestate"/>.
+        /// </summary>
+        public override void Initialize()
+        {
+            _Batch = Manager.Game.Batch;
+            _HowToPlayTexture = Manager.Game.Content.Load<Texture2D>("HowToPlay");
+            Manager.Game.AudioManager.Play(MusicTracks.TitleMusic);
+        }
+
+        /// <summary>
+        /// Destroys the <see cref="Gamestate"/>.
+        /// </summary>
+        public override void Destroy()
+        {
+
+        }
+
+        /// <summary>
+        /// Updates the <see cref="Gamestate"/>.
+        /// </summary>
+        /// <param name="gameTime">Timing information.</param>
+        public override void Update(GameTime gameTime)
+        {
+            if (InputManager.IsActionPressed(PlayerIndex.One, InputActions.Ok)
+                || InputManager.IsActionPressed(PlayerIndex.One, InputActions.Abort))
+            {
+                Manager.Game.AudioManager.Play(SoundEffects.MenuValidate);
+                Manager.Remove(this);
+                Manager.Add(new MainMenuGamestate());
+            }
+        }
+
+        /// <summary>
+        /// Draws the <see cref="Gamestate"/>.
+        /// </summary>
+        /// <param name="gameTime">Timing information.</param>
+        /// <returns><c>True</c>, if the next gamestate may draw too.</returns>
+        public override bool Draw(GameTime gameTime)
+        {
+            _Batch.Begin(SpriteSortMode.Texture,
+                BlendState.NonPremultiplied,
+                SamplerState.PointClamp,
+                DepthStencilState.None,
+                RasterizerState.CullNone);
+
+            _Batch.Draw(_HowToPlayTexture, Vector2.Zero, Color.White);
+
+            _Batch.End();
+
+            return false;
+        }
+    }
+}