GR_2

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System;
using System.Collections.Generic;

namespace PingPong
{

    public class AnimatedSprite : Sprite
    {
        public int Rows, Columns;
        protected int _currentFrame, _totalFrames;

        protected int _width, _height;

        int timeSinceLastFrame = 0;
        int milisecondsPerFrame;

        protected Texture2D explosionTexture;

        protected static readonly TimeSpan explosionInterval = TimeSpan.FromMilliseconds(900);
        protected TimeSpan waitingTime;
        protected Rectangle explosionRectangle;

        protected bool isExplosionVisible = false;


        public AnimatedSprite(Texture2D texture, int rows, int columns, int missingFrames, int msecondsPerFrame, Texture2D explosion)
            : base(texture)
        {
            milisecondsPerFrame = msecondsPerFrame;
            Rows = rows;
            Columns = columns;
            _currentFrame = 0;
            _totalFrames = Rows * Columns - missingFrames;

            _width = texture.Width / Columns;
            _height = texture.Height / Rows;
            explosionTexture = explosion;

            base._textureWidth = _width;
            base._textureHeight = _height;
            explosionRectangle = new Rectangle(0, 0, _width, _height);
        }

        public override void Update(GameTime gameTime, List<Sprite> sprites)
        {
            if (isExplosionVisible)
            {
                waitingTime += gameTime.ElapsedGameTime;
                if (waitingTime > explosionInterval)
                {
                    isExplosionVisible = false;
                    waitingTime = new TimeSpan();
                }
            }
            timeSinceLastFrame += gameTime.ElapsedGameTime.Milliseconds;
            if (timeSinceLastFrame > milisecondsPerFrame)
            {
                timeSinceLastFrame -= milisecondsPerFrame;

                _currentFrame++;
                if (_currentFrame == _totalFrames)
                    _currentFrame = 0;
            }

        }

        public override void Draw(SpriteBatch spriteBatch)
        {
            if (isExplosionVisible)
            {
                int row2 = (int)((float)_currentFrame / (float)5);
                int column2 = _currentFrame % 5;

                Rectangle sourceRectangle2 = new Rectangle(_width * column2, _height * row2, _width, _height);
                var lastRect = new Rectangle((int)base.Position.X, (int)base.Position.Y, _width, _height);
                //if (explosionRectangle == Rectangle.Empty)
                //    explosionRectangle = new Rectangle((int)base.Position.X, (int)base.Position.Y, _width, _height);

                spriteBatch.Draw(explosionTexture, explosionRectangle, sourceRectangle2, Color.White);
            }
            else
            {
                int row = (int)((float)_currentFrame / (float)Columns);
                int column = _currentFrame % Columns;

                Rectangle sourceRectangle = new Rectangle(_width * column, _height * row, _width, _height);
                Rectangle destinationRectangle = new Rectangle((int)base.Position.X, (int)base.Position.Y, _width, _height);

                spriteBatch.Draw(base._texture, destinationRectangle, sourceRectangle, Color.White);
            }

        }
    }








    public class Ball : AnimatedSprite
    {
        private Vector2? _startPosition = null;
        private float? _startSpeed;
        private bool _isPlaying;

        public Score Score;

        public int explosionRows = 5;
        public int explosionColums = 5;



        public Ball(Texture2D texture, int rows, int columns, Texture2D explosion)
            : base(texture, rows, columns, 9, 16, explosion)
        {
            Speed = 3f;
        }

        public override void Update(GameTime gameTime, List<Sprite> sprites)
        {
            if (!isExplosionVisible)
            {
                if (_startPosition == null)
                {
                    _startPosition = Position;
                    _startSpeed = Speed;

                    Restart();
                }

                if (Keyboard.GetState().IsKeyDown(Keys.Space))
                    _isPlaying = true;

                if (!_isPlaying)
                    return;

                foreach (var sprite in sprites)
                {
                    if (sprite == this)
                        continue;

                    if (this.Velocity.X > 0 && this.IsTouchingLeft(sprite))
                    {
                        this.Velocity.X = -this.Velocity.X;
                        Speed++;

                        sprite.Shining = true;
                    }
                    if (this.Velocity.X < 0 && this.IsTouchingRight(sprite))
                    {
                        this.Velocity.X = -this.Velocity.X;
                        Speed++;

                        sprite.Shining = true;
                    }
                    if (this.Velocity.Y > 0 && this.IsTouchingTop(sprite))
                        this.Velocity.Y = -this.Velocity.Y;
                    if (this.Velocity.Y < 0 && this.IsTouchingBottom(sprite))
                        this.Velocity.Y = -this.Velocity.Y;
                }

                if (Position.Y <= 0 || Position.Y + base._textureHeight >= Game1.ScreenHeight)
                    Velocity.Y = -Velocity.Y;



                if (Position.X <= 0)
                {
                    Kaboom();
                    base.explosionRectangle.Location = new Point((int)Position.X,(int)Position.Y);
                    Score.Score2++;
                    Restart();
                }

                if (Position.X + base._textureWidth >= Game1.ScreenWidth)
                {
                    Kaboom();
                    base.explosionRectangle.Location = new Point((int)Position.X,(int)Position.Y);
                    Score.Score1++;
                    Restart();
                }

                Position += Velocity * Speed;

            }

            base.Update(gameTime, sprites);

        }

        void Kaboom()
        {
            base.isExplosionVisible = true;
        }

        public void Restart()
        {
            var direction = Game1.Random.Next(0, 4);

            switch (direction)
            {
                case 0:
                    Velocity = new Vector2(1, 1);
                    break;
                case 1:
                    Velocity = new Vector2(1, -1);
                    break;
                case 2:
                    Velocity = new Vector2(-1, -1);
                    break;
                case 3:
                    Velocity = new Vector2(-1, 1);
                    break;
            }

            Position = (Vector2)_startPosition;
            Speed = (float)_startSpeed;

            _isPlaying = false;
        }
    }









    public class Bat : Sprite
    {
        int timeSinceLastFrame = 0;
        int shiningMiliseconds = 300;


        public Bat(Texture2D texture)
            : base(texture)
        {
            Speed = 5f;
        }

        public override void Update(GameTime gameTime, List<Sprite> sprites)
        {
            if (Keyboard.GetState().IsKeyDown(Input.Up))
                Velocity.Y = -Speed;
            else if (Keyboard.GetState().IsKeyDown(Input.Down))
                Velocity.Y = Speed;

            Position += Velocity;

            Position.Y = MathHelper.Clamp(Position.Y, 0, Game1.ScreenHeight - _texture.Height);

            Velocity = Vector2.Zero;

            if (Shining)
            {
                ShineBat(gameTime);
            }
        }

        void ShineBat(GameTime gameTime)
        {
            base.Color = Color.Yellow;
            timeSinceLastFrame += gameTime.ElapsedGameTime.Milliseconds;
            if (timeSinceLastFrame > shiningMiliseconds)
            {
                timeSinceLastFrame -= shiningMiliseconds;
                base.Color = Color.White;
                base.Shining = false;
            }
        }
    }




    public class Input
    {
        public Keys Up;
        public Keys Down;
    }





    public class Score
    {
        public int Score1;
        public int Score2;

        private SpriteFont _font;

        public Score(SpriteFont font)
        {
            _font = font;
        }

        public void Draw(SpriteBatch spriteBatch)
        {
            spriteBatch.DrawString(_font, Score1.ToString(), new Vector2(320, 70), Color.White);
            spriteBatch.DrawString(_font, Score2.ToString(), new Vector2(460, 70), Color.White);
        }
    }





    public class Sprite
    {
        protected Texture2D _texture;

        public Vector2 Position;
        public Vector2 Velocity;
        public float Speed;
        public Input Input;

        int offset = 10;

        protected int _textureWidth, _textureHeight;

        public bool Shining = false;

        public Color Color = Color.White;

        public Rectangle Rectangle
        {
            get
            {
                return new Rectangle((int)Position.X, (int)Position.Y, _textureWidth, _textureHeight);
            }
        }


        public Sprite(Texture2D texture)
        {
            _texture = texture;
            _textureWidth = texture.Width;
            _textureHeight = texture.Height;
        }

        public virtual void Update(GameTime gameTime, List<Sprite> sprites)
        {

        }

        public virtual void Draw(SpriteBatch spriteBatch)
        {

            spriteBatch.Draw(_texture, Position, Color);
        }

        //kolizja

        protected bool IsTouchingLeft(Sprite sprite)
        {
            return this.Rectangle.Right + this.Velocity.X - offset > sprite.Rectangle.Left &&
              this.Rectangle.Left < sprite.Rectangle.Left &&
              this.Rectangle.Bottom > sprite.Rectangle.Top &&
              this.Rectangle.Top < sprite.Rectangle.Bottom;
        }

        protected bool IsTouchingRight(Sprite sprite)
        {
            return this.Rectangle.Left + this.Velocity.X + offset < sprite.Rectangle.Right &&
              this.Rectangle.Right > sprite.Rectangle.Right &&
              this.Rectangle.Bottom > sprite.Rectangle.Top &&
              this.Rectangle.Top < sprite.Rectangle.Bottom;
        }

        protected bool IsTouchingTop(Sprite sprite)
        {
            return this.Rectangle.Bottom + this.Velocity.Y - offset > sprite.Rectangle.Top &&
              this.Rectangle.Top < sprite.Rectangle.Top &&
              this.Rectangle.Right > sprite.Rectangle.Left &&
              this.Rectangle.Left < sprite.Rectangle.Right;
        }

        protected bool IsTouchingBottom(Sprite sprite)
        {
            return this.Rectangle.Top + this.Velocity.Y + offset < sprite.Rectangle.Bottom &&
              this.Rectangle.Bottom > sprite.Rectangle.Bottom &&
              this.Rectangle.Right > sprite.Rectangle.Left &&
              this.Rectangle.Left < sprite.Rectangle.Right;
        }
    }






    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        public static int ScreenWidth;
        public static int ScreenHeight;
        public static Random Random;

        private Score _score;
        private List<Sprite> _sprites;

        Texture2D bcgTexture;

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            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
            ScreenWidth = graphics.PreferredBackBufferWidth;
            ScreenHeight = graphics.PreferredBackBufferHeight;
            Random = new Random();

            base.Initialize();
        }

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

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

            var batTexture = Content.Load<Texture2D>("paddle1a");
            var batTexture2 = Content.Load<Texture2D>("paddle2a");
            var explosionTexture = Content.Load<Texture2D>("explosion64"); //5,5 row

            var ballAnimTexture = Content.Load<Texture2D>("ball-anim");

            _score = new Score(Content.Load<SpriteFont>("font"));

            _sprites = new List<Sprite>()
                          {

                            new Bat(batTexture)
                            {
                              Position = new Vector2(20, (ScreenHeight / 2) - (batTexture.Height / 2)),
                              Input = new Input()
                              {
                                Up = Keys.Q,
                                Down = Keys.A,
                              }
                            },
                            new Bat(batTexture2)
                            {
                              Position = new Vector2(ScreenWidth - 20 - batTexture.Width, (ScreenHeight / 2) - (batTexture.Height / 2)),
                              Input = new Input()
                              {
                                Up = Keys.P,
                                Down = Keys.L,
                              }
                            },
                            new Ball(ballAnimTexture,5,16,explosionTexture)
                            {
                                Position = new Vector2((ScreenWidth / 2) - (32), (ScreenHeight / 2) - (32)),
                                Score = _score,
                            }
                          };
        }

        /// <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();

            foreach (var sprite in _sprites)
            {
                sprite.Update(gameTime, _sprites);
            }

            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);

            // TODO: Add your drawing code here
            spriteBatch.Begin();

            spriteBatch.Draw(bcgTexture, GraphicsDevice.Viewport.Bounds, Color.White);

            foreach (var sprite in _sprites)
                sprite.Draw(spriteBatch);

            _score.Draw(spriteBatch);

            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}