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; 
         SpriteFont font; 
 
         PlayerData[color= #000000;][[/color]] players;
         int numberOfPlayers = 4; 
         float playerScaling; 
         int currentPlayer = 0; 
 
         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"); 
 
            font = Content.Load ("myFont"); 
 
             SetUpPlayers(); 
             playerScaling = 40.0f / (float)carriageTexture.Width; 
         } 
 
         private void SetUpPlayers() 
         { 
             Color[color= #000000;][[/color]] playerColors = new Color[color= #000000;][[/color]10]; 
             playerColors[color= #000000;][[/color]0] = Color.Red; 
             playerColors[color= #000000;][[/color]1] = Color.Green; 
             playerColors[color= #000000;][[/color]2] = Color.Blue; 
             playerColors[color= #000000;][[/color]3] = Color.Purple; 
             playerColors[color= #000000;][[/color]4] = Color.Orange; 
             playerColors[color= #000000;][[/color]5] = Color.Indigo; 
             playerColors[color= #000000;][[/color]6] = Color.Yellow; 
             playerColors[color= #000000;][[/color]7] = Color.SaddleBrown; 
             playerColors[color= #000000;][[/color]8] = Color.Tomato; 
             playerColors[color= #000000;][[/color]9] = Color.Turquoise; 
 
             players = new PlayerData[color= #000000;][[/color]numberOfPlayers]; 
             for (int i = 0; i < numberOfPlayers; i++) 
             { 
                 players[color= #000000;][[/color]i].IsAlive = true; 
                 players[color= #000000;][[/color]i].Color = playerColors[color= #000000;][[/color]i]; 
                 players[color= #000000;][[/color]i].Angle = MathHelper.ToRadians(90); 
                 players[color= #000000;][[/color]i].Power = 100;                 
             } 
 
             players[color= #000000;][[/color]0].Position = new Vector2(100, 193); 
             players[color= #000000;][[/color]1].Position = new Vector2(200, 212); 
             players[color= #000000;][[/color]2].Position = new Vector2(300, 361); 
             players[color= #000000;][[/color]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(); 
 
             ProcessKeyboard(); 
             base.Update(gameTime); 
         } 
 
         private void ProcessKeyboard() 
         { 
             KeyboardState keybState = Keyboard.GetState(); 
             if (keybState.IsKeyDown(Keys.Left)) 
                 players[color= #000000;][[/color]currentPlayer].Angle -= 0.01f; 
             if (keybState.IsKeyDown(Keys.Right)) 
                 players[color= #000000;][[/color]currentPlayer].Angle += 0.01f; 
 
             if (players[color= #000000;][[/color]currentPlayer].Angle > MathHelper.PiOver2) 
                 players[color= #000000;][[/color]currentPlayer].Angle = -MathHelper.PiOver2; 
             if (players[color= #000000;][[/color]currentPlayer].Angle < -MathHelper.PiOver2) 
                 players[color= #000000;][[/color]currentPlayer].Angle = MathHelper.PiOver2; 
 
             if (keybState.IsKeyDown(Keys.Down)) 
                 players[color= #000000;][[/color]currentPlayer].Power -= 1; 
             if (keybState.IsKeyDown(Keys.Up)) 
                 players[color= #000000;][[/color]currentPlayer].Power += 1; 
             if (keybState.IsKeyDown(Keys.PageDown)) 
                 players[color= #000000;][[/color]currentPlayer].Power -= 20; 
             if (keybState.IsKeyDown(Keys.PageUp)) 
                 players[color= #000000;][[/color]currentPlayer].Power += 20; 
 
             if (players[color= #000000;][[/color]currentPlayer].Power > 1000) 
                 players[color= #000000;][[/color]currentPlayer].Power = 1000; 
             if (players[color= #000000;][[/color]currentPlayer].Power < 0) 
                 players[color= #000000;][[/color]currentPlayer].Power = 0; 
         } 
 
         protected override void Draw(GameTime gameTime) 
         { 
             graphics.GraphicsDevice.Clear(Color.CornflowerBlue); 
 
             spriteBatch.Begin(); 
             DrawScenery(); 
             DrawPlayers(); 
             DrawText(); 
             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, 
player.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); 
                 } 
             } 
         } 
 
         private void DrawText() 
         { 
             PlayerData player = players[color= #000000;][[/color]currentPlayer]; 
             int currentAngle = (int)MathHelper.ToDegrees(player.Angle); 
             spriteBatch.DrawString(font, "Cannon angle: " + currentAngle.ToString(), new Vecto
r2(20, 
20), player.Color); 
             spriteBatch.DrawString(font, "Cannon power: " + player.Power.ToString(), new Vecto
r2(20, 
45), player.Color); 
         } 
     } 
 }