using System;
 using System.Collections.Generic;
 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.Net;
 using Microsoft.Xna.Framework.Storage;
 
 namespace XNAtutorial
 {
     public struct PlayerData
     {
         public Vector2 Position;
         public bool IsAlive;
         public Color Color;
         public float Angle;
         public float Power;
     }
 
     public class Game1 : Microsoft.Xna.Framework.Game
     {
         GraphicsDeviceManager graphics;
         SpriteBatch spriteBatch;
         GraphicsDevice device;
 
         int screenWidth;
         int screenHeight;
 
         Texture2D backgroundTexture;
         Texture2D foregroundTexture;
         Texture2D carriageTexture;
         Texture2D cannonTexture;
 
         PlayerData players;
         int numberOfPlayers = 4;
         float playerScaling;
 
         public Game1()
         {
             graphics = new GraphicsDeviceManager(this);
             Content.RootDirectory = "Content";
         }
 
         protected override void Initialize()
         {
             graphics.PreferredBackBufferWidth = 500;
             graphics.PreferredBackBufferHeight = 500;
             graphics.IsFullScreen = false;
             graphics.ApplyChanges();
             Window.Title = "Riemer's 2D XNA Tutorial";
 
             base.Initialize();
         }
 
         protected override void LoadContent()
         {
             device = graphics.GraphicsDevice;
             spriteBatch = new SpriteBatch(device);
 
             screenWidth = device.PresentationParameters.BackBufferWidth;
             screenHeight = device.PresentationParameters.BackBufferHeight;
 
 
            backgroundTexture = Content.Load ("background");
            foregroundTexture = Content.Load ("foreground");
            carriageTexture = Content.Load ("carriage");
            cannonTexture = Content.Load ("cannon");
            SetUpPlayers();
            playerScaling = 40.0f / (float)carriageTexture.Width;
        }
 
        private void SetUpPlayers()
        {
            Color playerColors = new Color[10];
            playerColors[0] = Color.Red;
            playerColors[1] = Color.Green;
            playerColors[2] = Color.Blue;
            playerColors[3] = Color.Purple;
            playerColors[4] = Color.Orange;
            playerColors[5] = Color.Indigo;
            playerColors[6] = Color.Yellow;
            playerColors[7] = Color.SaddleBrown;
            playerColors[8] = Color.Tomato;
            playerColors[9] = Color.Turquoise;
 
            players = new PlayerData[numberOfPlayers];
            for (int i = 0; i < numberOfPlayers; i++)
            {
                players[i].IsAlive = true;
                players[i].Color = playerColors[i];
                players[i].Angle = MathHelper.ToRadians(90);
                players[i].Power = 100;                
            }
 
            players[0].Position = new Vector2(100, 193);
            players[1].Position = new Vector2(200, 212);
            players[2].Position = new Vector2(300, 361);
            players[3].Position = new Vector2(400, 164);
        }
 
        protected override void UnloadContent()
        {
        }
 
        protected override void Update(GameTime gameTime)
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                this.Exit();
 
            base.Update(gameTime);
        }
 
        protected override void Draw(GameTime gameTime)
        {
            graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
 
            spriteBatch.Begin();
            DrawScenery();
            DrawPlayers();
            spriteBatch.End();
 
            base.Draw(gameTime);
        }
 
        private void DrawScenery()
        {
            Rectangle screenRectangle = new Rectangle(0, 0, screenWidth, screenHeight);
            spriteBatch.Draw(backgroundTexture, screenRectangle, Color.White);
            spriteBatch.Draw(foregroundTexture, screenRectangle, Color.White);
        }
 
        private void DrawPlayers()
        {
            foreach (PlayerData player in players)
            {
                if (player.IsAlive)
                {
 
                     int xPos = (int)player.Position.X;
                     int yPos = (int)player.Position.Y;
                     Vector2 cannonOrigin = new Vector2(11, 50);
 
                     spriteBatch.Draw(cannonTexture, new Vector2(xPos + 20, yPos - 10), null, p
layer.Color, player.Angle, cannonOrigin, playerScaling, SpriteEffects.None, 1);
                     spriteBatch.Draw(carriageTexture, player.Position, null, player.Color, 0, 
new Vector2(0, carriageTexture.Height), playerScaling, SpriteEffects.None, 0);
                 }
             }
         }
     }
 }