Game1.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

namespace Pong
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        Texture2D background;
        Texture2D rocket1;
        Texture2D rocket2;
        Texture2D ball;

        Rockets rockets = new Rockets();

        Rectangle ballRectangle;
        Rectangle rocket1Rectangle;
        Rectangle rocket2Rectangle;

        int rocket1XValue = 0;
        int rocket1YValue = 250;
        int rocket2XValue = 775;
        int rocket2YValue = 250;
        int ballXValue = 390;
        int ballYValue = 290;

        int one = 0;
        int two = 0;

        float speedX;
        float speedY;

        Vector2 ballVelocity;

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            graphics.PreferredBackBufferHeight = 600;
            graphics.PreferredBackBufferWidth = 800;
            Window.AllowUserResizing = false;
            IsMouseVisible = true;
            Content.RootDirectory = "Content";
        }

        /// <summary>
        /// Allows the game to perform any initialization it needs to before starting to run.
        /// This is where it can query for any required services and load any non-graphic
        /// related content.  Calling base.Initialize will enumerate through any components
        /// and initialize them as well.
        /// </summary>
        protected override void Initialize()
        {
            // TODO: Add your initialization logic here
            speedX = 5;
            speedY = 0;
            base.Initialize();


        }

        /// <summary>
        /// LoadContent will be called once per game and is the place to load
        /// </summary>
        /// all of your content.
        protected override void LoadContent()
        {
            // Create a new SpriteBatch, which can be used to draw textures.
            spriteBatch = new SpriteBatch(GraphicsDevice);

            background = Content.Load<Texture2D>("pongBackground");

            rockets.LoadContent(Content);


            ball = Content.Load<Texture2D>("ball");

            ballRectangle = new Rectangle(ballXValue, ballYValue, ball.Width - 4, ball.Height - 5);


            // TODO: use this.Content to load your game content here
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// game-specific content.
        /// </summary>
        protected override void UnloadContent()
        {
            // TODO: Unload any non ContentManager content here
        }

        /// <summary>
        /// Allows the game to run logic such as updating the world,
        /// checking for collisions, gathering input, and playing audio.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Update(GameTime gameTime)
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
                Exit();

            ballRectangle.X += (int)ballVelocity.X;
            ballRectangle.Y += (int)ballVelocity.Y;
            ballVelocity = new Vector2(speedX, speedY);


            if(Keyboard.GetState().IsKeyDown(Keys.Space))
            {
                this.Initialize();
            }
            if (ballRectangle.Intersects(rockets.rocketUp1))
            {
                speedX = 5;
                speedY = -5;
            }
            if(ballRectangle.Intersects(rockets.rocketMiddle1))
            {
                speedX = 5;
                speedY = 0;
            }
            if (ballRectangle.Intersects(rockets.rocketDown1))
            {
                speedX = 5;
                speedY = 5;
            }
            if (ballRectangle.Intersects(rockets.rocketUp2))
            {
                speedX = -5;
                speedY = -5;
            }
            if (ballRectangle.Intersects(rockets.rocketMiddle2))
            {
                speedX = -5;
                speedY = 0;
            }
            if (ballRectangle.Intersects(rockets.rocketDown2))
            {
                speedX = -5;
                speedY = 5;
            }
            if(ballRectangle.X <= 0)
            {
                two++;
                //speedX = 5;
                //speedY = 0;
                //Initialize();
            }
            if(ballRectangle.X >=800)
            {
                one++;
                //speedX = -5;
                //speedY = 0;
                //Initialize();
            }
            if(ballRectangle.Y <= 0)
            {
                speedY = -speedY;
                ballRectangle.Y += 10;
            }
            if(ballRectangle.Y >= 600-10)
            {
                speedY = -speedY;
                ballRectangle.Y -= 10;
            }

            rockets.Update(gameTime);

            base.Update(gameTime);
        }

        /// <summary>
        /// This is called when the game should draw itself.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            spriteBatch.Begin();
            spriteBatch.Draw(background, new Rectangle(0, 0, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height), Color.White);

            rockets.Draw(spriteBatch);

            spriteBatch.Draw(ball, ballRectangle, Color.White);

            spriteBatch.End();
            base.Draw(gameTime);
        }
    }
}