using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;



namespace test
{
    public class Enemy
    {
        public Texture2D enemy_T;
        public Rectangle enemy_Rect;
        public Color enemy_color;
        public int enemy_type;

        public int enemy_hit_white = 0;
        public int enemy_hit_other = 0;

        public void setType(int typ)
        {
            if (typ >= 0 && typ <= 100)
            {
                enemy_type = 0;
                enemy_color = Color.White;
            }
            else if (typ >= 101 && typ <= 200)
            {
                enemy_type = 1;
                enemy_color = Color.Green;
            }
            else
            {
                enemy_type = 2;
                enemy_color = Color.Red;
            }
        }
        public void EnemyHitted()
        {
            if (enemy_type == 0)
            {
                enemy_hit_white++;
            }
            else
            {
                enemy_hit_other++;
            }
        }
    };

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

        Texture2D   background_T;
        Rectangle   background_Rect;

        Random rand = new Random();

        Enemy enemy = new Enemy();
        float Time_step = 1.0f;
        float Current_Time = 0.0f;

        int back_value_ss_x;
        int back_value_ss_y;

        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
           Window.Title = "Points White:0 || Other:0";

           background_Rect = new Rectangle(0, 0, GraphicsDevice.PresentationParameters.BackBufferWidth, GraphicsDevice.PresentationParameters.BackBufferHeight);

           enemy.enemy_Rect = new Rectangle(0, 0, GraphicsDevice.PresentationParameters.BackBufferWidth / 12, GraphicsDevice.PresentationParameters.BackBufferHeight / 10);
           enemy.setType(rand.Next(0,300));


           back_value_ss_x = GraphicsDevice.PresentationParameters.BackBufferWidth;
           back_value_ss_y = GraphicsDevice.PresentationParameters.BackBufferHeight;
           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()
        {
            this.IsMouseVisible = true;
            Window.AllowUserResizing = true;
            // Create a new SpriteBatch, which can be used to draw textures.
            spriteBatch = new SpriteBatch(GraphicsDevice);
            background_T = this.Content.Load<Texture2D>("street");
            enemy.enemy_T = this.Content.Load<Texture2D>("ghost");
            // TODO: use this.Content to load your game content here
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// all 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)
        {
            KeyboardState   state = Keyboard.GetState();
            MouseState      state_mouse = Mouse.GetState();
            // Allows the game to exit

            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                this.Exit();

            if (state.IsKeyDown(Keys.Escape)) this.Exit();

            if (back_value_ss_x != GraphicsDevice.PresentationParameters.BackBufferWidth)
            {
               background_Rect = new Rectangle(0, 0, GraphicsDevice.PresentationParameters.BackBufferWidth, GraphicsDevice.PresentationParameters.BackBufferHeight);
               back_value_ss_x = GraphicsDevice.PresentationParameters.BackBufferWidth;
            }

            if (back_value_ss_y != GraphicsDevice.PresentationParameters.BackBufferHeight)
            {
                background_Rect = new Rectangle(0, 0, GraphicsDevice.PresentationParameters.BackBufferWidth, GraphicsDevice.PresentationParameters.BackBufferHeight);
                back_value_ss_y = GraphicsDevice.PresentationParameters.BackBufferHeight;
            }

            if (state_mouse.LeftButton == ButtonState.Pressed)
            {
                Point mouse_pos = new Point(state_mouse.X, state_mouse.Y);
                if (enemy.enemy_Rect.Contains(mouse_pos))
                {
                    enemy.EnemyHitted();
                    enemy.setType(rand.Next(0, 300));
                    enemy.enemy_Rect = new Rectangle(rand.Next(0, GraphicsDevice.PresentationParameters.BackBufferWidth - enemy.enemy_Rect.Width), rand.Next(0, GraphicsDevice.PresentationParameters.BackBufferHeight - enemy.enemy_Rect.Height), GraphicsDevice.PresentationParameters.BackBufferWidth / 12, GraphicsDevice.PresentationParameters.BackBufferHeight / 10);
                    Current_Time = 0;
                    Window.Title = "Points White:" + enemy.enemy_hit_white + " || Other:" + enemy.enemy_hit_other;
                }
            }

            Current_Time += (float)gameTime.ElapsedGameTime.TotalSeconds;

            if (Current_Time > Time_step)
            {
                enemy.setType(rand.Next(0, 300));
                enemy.enemy_Rect = new Rectangle(rand.Next(0, GraphicsDevice.PresentationParameters.BackBufferWidth - enemy.enemy_Rect.Width), rand.Next(0, GraphicsDevice.PresentationParameters.BackBufferHeight - enemy.enemy_Rect.Height), GraphicsDevice.PresentationParameters.BackBufferWidth / 12, GraphicsDevice.PresentationParameters.BackBufferHeight / 10);
                Current_Time = 0;
            }

            // TODO: Add your update logic here

            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(background_T, background_Rect, Color.White);
                spriteBatch.Draw(enemy.enemy_T, enemy.enemy_Rect, enemy.enemy_color);

            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}