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

namespace pong__
{

    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch sb;

        Player player = new Player();
        Ball ball = new Ball();
        Texture2D playerT;

        int points;

        Random random = new Random();

        SpriteFont font;


        List<Blocks> lista = new List<Blocks>();

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }


        protected override void Initialize()
        {
            graphics.PreferredBackBufferHeight = 600;
            graphics.PreferredBackBufferWidth = 800;
            graphics.ApplyChanges();

            base.Initialize();
        }

        protected override void LoadContent()
        {
            sb = new SpriteBatch(GraphicsDevice);


            playerT = Content.Load<Texture2D>("player");

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

            dodaj(random.Next(4, 9), random.Next(1, 100), 50);
            dodaj(random.Next(4, 9), random.Next(1, 100), 100);




        }

        protected override void UnloadContent()
        {

        }


        void dodaj(int i, int x, int y)
        {
            int x_ = x;
            for (int i_ = 0; i_ < i; i_++)
            {

                Blocks x1 = new Blocks(new Rectangle(x_, y, 32, 32));
                x_ += random.Next(50, 150);
                lista.Add(x1);
            }
        }

        protected override void Update(GameTime gameTime)
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
                Exit();


            player.Update();
            ball.Update();



            //logika

            foreach(var x in lista)
            {
                if (ball.rect.Intersects(x.rect))
                {

                    points++;



                    if (ball.rect.Top <= x.rect.Bottom)
                        ball.velocity.Y = ball.speed;
                    else if (ball.rect.Bottom >= x.rect.Top)
                        ball.velocity.Y = -ball.speed;

                    if (ball.rect.Right >= x.rect.Left)
                        ball.velocity.X = -ball.speed;
                    else if (ball.rect.Left <= x.rect.Right)
                        ball.velocity.X = ball.speed;
                }

            };


            if (ball.rect.Intersects(player.rect))
            {
                ball.velocity.Y = -ball.speed;
                ball.speed += (float)random.NextDouble();
            }

            // Tutaj występuje problem
            lista.ForEach(x =>
            {
                if (ball.rect.Intersects(x.rect))
                {
                    lista.Remove(x);
                }
            });
            // Koniec problemu


            //////////




            base.Update(gameTime);
        }


        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);


            sb.Begin();

            sb.Draw(playerT, player.rect, Color.White);
            sb.Draw(playerT, ball.rect, Color.White);

            sb.DrawString(font, string.Format("Points {0}", points), new Vector2(0, 0), Color.Black);

            foreach (var x in lista)
            {
                sb.Draw(playerT, x.rect, Color.White);
            }

            sb.End();



            base.Draw(gameTime);
        }
    }
}