//Game1.cs

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 Xbox360Game1
{
    /// <summary>
    /// This is the main type for your game
    /// </summary>
    public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        public Ship ship;

        public List<Projectile> LiveProjectiles;

        public Texture2D Bullet;

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

            graphics.PreferredBackBufferWidth = 880;
            graphics.PreferredBackBufferHeight = 520;
            graphics.PreferMultiSampling = true;
            graphics.ApplyChanges();
        }

        protected override void Initialize()
        {
            // TODO: Add your initialization logic here

            base.Initialize();
        }


        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            ship = new Ship();
            ship.ShipTexture = Content.Load<Texture2D>("RocketShip");
            ship.Rotation = 0.0f;
            ship.Position = new Vector2(
                graphics.GraphicsDevice.Viewport.Width / 2,
                graphics.GraphicsDevice.Viewport.Height / 2);

            LiveProjectiles = new List<Projectile>();
            Bullet = Content.Load<Texture2D>("Bullet");

        }

        protected override void UnloadContent()
        {
            Content.Unload();
            Content.Dispose();
        }

        protected override void Update(GameTime gameTime)
        {
            // Allows the game to exit
            //if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                //this.Exit();
            GamePadState gamePadState = GamePad.GetState(PlayerIndex.One);
            if (gamePadState.DPad.Left == ButtonState.Pressed)
               ship.Position.X -= 2.5f;
            if (gamePadState.DPad.Right == ButtonState.Pressed)
               ship.Position.X += 2.5f;
            if (gamePadState.DPad.Up == ButtonState.Pressed)
               ship.Position.Y -= 2.5f;
            if (gamePadState.DPad.Down == ButtonState.Pressed)
               ship.Position.Y += 2.5f;

            if (gamePadState.Buttons.RightShoulder == ButtonState.Pressed)
                ship.Rotation += 0.1f;
            if (gamePadState.Buttons.LeftShoulder == ButtonState.Pressed)
                ship.Rotation -= 0.1f;

            if (gamePadState.Triggers.Right >= 0.95f)
            {
                Projectile bullet = new Projectile();
                bullet.Position = ship.Position;
                bullet.Velocity =
                    Vector2.Transform(new Vector2(0, -1 * 15),
                Matrix.CreateRotationZ(ship.Rotation - MathHelper.ToRadians(46)));
                LiveProjectiles.Add(bullet);
            }
            base.Update(gameTime);
        }

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

            for (int i = 0; i < LiveProjectiles.Count; i++)
            {
                spriteBatch.Draw(Bullet, LiveProjectiles[i].Position, null, Color.White, 0f,
                    new Vector2(Bullet.Width / 2, Bullet.Height / 2), 0.2f, SpriteEffects.None, 0);
            }

            spriteBatch.Draw(ship.ShipTexture, ship.Position, null, Color.White, ship.Rotation,
                new Vector2(
                    ship.ShipTexture.Width / 2,
                    ship.ShipTexture.Height / 2), 0.35f, SpriteEffects.None, 0);
            spriteBatch.End();


            base.Draw(gameTime);
        }
    }
}


//Ship.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework;
namespace Xbox360Game1
{
    public class Ship
    {
        public Texture2D ShipTexture;
        public Vector2 Position;
        public Single Rotation;
    }
}

//Projectile.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;

namespace Xbox360Game1
{
    class Projectile
    {
        public Vector2 Position;
        public Vector2 Velocity;
    }
}