GameProject-Game1.cs

using System;
using System.Collections.Generic;

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

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

        // game objects. Using inheritance would make this
        // easier, but inheritance isn't a GDD 1200 topic
        Burger burger;
        List<TeddyBear> bears = new List<TeddyBear>();
        static List<Projectile> projectiles = new List<Projectile>();
        List<Explosion> explosions = new List<Explosion>();

        // projectile and explosion sprites. Saved so they don't have to
        // be loaded every time projectiles or explosions are created
        static Texture2D frenchFriesSprite;
        static Texture2D teddyBearProjectileSprite;
        static Texture2D explosionSpriteStrip;

        // scoring support
        int score = 0;
        string scoreString = GameConstants.ScorePrefix + 0;

        // health support
        string healthString = GameConstants.HealthPrefix +
            GameConstants.BurgerInitialHealth;
        bool burgerDead = false;

        // text display support
        SpriteFont font;

        // sound effects
        SoundEffect burgerDamage;
        SoundEffect burgerDeath;
        SoundEffect burgerShot;
        SoundEffect explosion;
        SoundEffect teddyBounce;
        SoundEffect teddyShot;

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

            // set resolution
            graphics.PreferredBackBufferWidth = GameConstants.WindowWidth;
            graphics.PreferredBackBufferHeight = GameConstants.WindowHeight;
        }

        /// <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()
        {
            RandomNumberGenerator.Initialize();

            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);

            SpawnBear( );

            // load burger

            burger = new Burger( Content, (@"graphics/burger"), GameConstants.WindowWidth / 2,
                GameConstants.WindowHeight / 8 * 7, null );

            // load audio content

            // load sprite font

            // load projectile and explosion sprites

            // add initial game objects

            // set initial health and score strings
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// game-specific 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();

            // get current mouse state and update burger

            // update other game objects
            foreach (TeddyBear bear in bears)
            {
                bear.Update(gameTime);
            }
            foreach (Projectile projectile in projectiles)
            {
                projectile.Update(gameTime);
            }
            foreach (Explosion explosion in explosions)
            {
                explosion.Update(gameTime);
            }

            // check and resolve collisions between teddy bears

            // check and resolve collisions between burger and teddy bears

            // check and resolve collisions between burger and projectiles

            // check and resolve collisions between teddy bears and projectiles

            // clean out inactive teddy bears and add new ones as necessary

            // clean out inactive projectiles

            // clean out finished explosions

            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);

            spriteBatch.Begin();

            // draw game objects
            burger.Draw(spriteBatch);

            foreach (TeddyBear bear in bears)
            {
                bear.Draw(spriteBatch);
            }
            foreach (Projectile projectile in projectiles)
            {
                projectile.Draw(spriteBatch);
            }
            foreach (Explosion explosion in explosions)
            {
                explosion.Draw(spriteBatch);
            }

            // draw score and health

            spriteBatch.End();

            base.Draw(gameTime);
        }

        #region Public methods

        /// <summary>
        /// Gets the projectile sprite for the given projectile type
        /// </summary>
        /// <param name="type">the projectile type</param>
        /// <returns>the projectile sprite for the type</returns>
        public static Texture2D GetProjectileSprite(ProjectileType type)
        {
            // replace with code to return correct projectile sprite based on projectile type
            return frenchFriesSprite;
        }

        /// <summary>
        /// Adds the given projectile to the game
        /// </summary>
        /// <param name="projectile">the projectile to add</param>
        public static void AddProjectile(Projectile projectile)
        {

        }

        #endregion

        #region Private methods

        /// <summary>
        /// Spawns a new teddy bear at a random location
        /// </summary>
        private void SpawnBear()
        {
            // generate random location
            int bearPosX = GetRandomLocation(GameConstants.SpawnBorderSize,
                GameConstants.WindowWidth - GameConstants.SpawnBorderSize * 2);

            int bearPosY = GetRandomLocation(GameConstants.SpawnBorderSize,
                GameConstants.WindowHeight - GameConstants.SpawnBorderSize * 2);

            // generate random speed
            float bearSpeed = GameConstants.MinBearSpeed +
                RandomNumberGenerator.NextFloat(GameConstants.BearSpeedRange);

            // generate random angle
            float angle = RandomNumberGenerator.NextFloat(360) * (float)Math.PI;

            // generate vector2 velocity
            float XVel =System.Convert.ToSingle(bearSpeed * Math.Cos(angle));
            float YVel = System.Convert.ToSingle(bearSpeed * Math.Sin(angle));
            Vector2 velocity =new Vector2(XVel,YVel);

            // create new bear
            TeddyBear newBear = new TeddyBear(Content, @"graphics/teddybear", bearPosX,
                bearPosY, velocity, null, null);

            bears.Add(newBear);

            // make sure we don't spawn into a collision

            // add new bear to list

        }

        /// <summary>
        /// Gets a random location using the given min and range
        /// </summary>
        /// <param name="min">the minimum</param>
        /// <param name="range">the range</param>
        /// <returns>the random location</returns>
        private int GetRandomLocation(int min, int range)
        {
            return min + RandomNumberGenerator.Next(range);
        }

        /// <summary>
        /// Gets a list of collision rectangles for all the objects in the game world
        /// </summary>
        /// <returns>the list of collision rectangles</returns>
        private List<Rectangle> GetCollisionRectangles()
        {
            List<Rectangle> collisionRectangles = new List<Rectangle>();
            collisionRectangles.Add(burger.CollisionRectangle);
            foreach (TeddyBear bear in bears)
            {
                collisionRectangles.Add(bear.CollisionRectangle);
            }
            foreach (Projectile projectile in projectiles)
            {
                collisionRectangles.Add(projectile.CollisionRectangle);
            }
            foreach (Explosion explosion in explosions)
            {
                collisionRectangles.Add(explosion.CollisionRectangle);
            }
            return collisionRectangles;
        }

        /// <summary>
        /// Checks to see if the burger has just been killed
        /// </summary>
        private void CheckBurgerKill()
        {

        }

        #endregion
    }
}