gistfile1.cs

#region Using Statements
using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Storage;
using Microsoft.Xna.Framework.GamerServices;
using ShipFighterClasses; 
#endregion

namespace ShipFighter
{
    /// <summary>
    /// This is the main type for your game
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        Player playerShip;
        Player background;
        Random random; 
        Player[] blueEnemies;
        MouseState prevMouseState; 

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

        protected override void Initialize()
        {
            random = new Random(); 
            blueEnemies=new Player[7];
            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()
        {
            // Create a new SpriteBatch, which can be used to draw textures.
            spriteBatch = new SpriteBatch(GraphicsDevice);
           background= new Player( Content.Load<Texture2D>("spaceBackground"), 
            Vector2.Zero, //position,
            Vector2.Zero, //velocity, 
            Vector2.Zero, //acceleration,
            false, 
            1.0f); //scale

           playerShip = new Player(Content.Load<Texture2D>("shipSprite"),
           Vector2.Zero, //position,
           new Vector2(100,100), //velocity, 
           new Vector2(10, 10), //acceleration,
           true,
           1.0f); //scale

           for (int i = 0; i < blueEnemies.Length; i++)
           {
               blueEnemies[i] = new Player(Content.Load<Texture2D>("blueEnemy"),
               new Vector2(
                   random.Next(0,GraphicsDevice.Viewport.Width)
                   , 0), //position,
               new Vector2(0, 50), //velocity, 
               new Vector2(0, 0), //acceleration,
               true,
               1.0f); //scale
           }
        }

        /// <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)
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
                Exit();
            UpdateInput();
            playerShip.Update(gameTime, GraphicsDevice);
            
            foreach(Player blueEnemy in blueEnemies){
                blueEnemy.Update(gameTime);
                if (playerShip.CollisionSprite(blueEnemy))
                {
                    blueEnemy.Alive = false; 
                }
            }
            base.Update(gameTime);
        }
        private void UpdateInput()
        {
            bool keyPressed = false;
            KeyboardState keyState = Keyboard.GetState();
            GamePadState  gamePadState = GamePad.GetState(PlayerIndex.One);
            if (keyState.IsKeyDown(Keys.Up) 
              || gamePadState.DPad.Up == ButtonState.Pressed
              || gamePadState.ThumbSticks.Left.Y > 0  )
            {
                playerShip.Up(); keyPressed = true; 
            }
            if (keyState.IsKeyDown(Keys.Down))
            {
                playerShip.Down(); keyPressed = true;
            }
            if (keyState.IsKeyDown(Keys.Left))
            {
                playerShip.Left(); keyPressed = true;
            }
            if (keyState.IsKeyDown(Keys.Right))
            {
                playerShip.Right();keyPressed = true;
            }
            if (!keyPressed) playerShip.Idle();

            MouseState currMouseState = Mouse.GetState();
            if(currMouseState.X != prevMouseState.X ||
                currMouseState.Y != prevMouseState.Y)
            {
                playerShip.Position = new Vector2(
                    currMouseState.X,currMouseState.Y);
            }
            prevMouseState = currMouseState; 
        }
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);

            spriteBatch.Begin();
            background.Draw(spriteBatch);
            playerShip.Draw(spriteBatch);
            foreach (Player blueEnemy in blueEnemies)
            {
                blueEnemy.Draw(spriteBatch);
            }
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}