/// <summary>
/// Initializes a new instance of the <see cref="EnemyShip"/> class.
/// </summary>
/// <param name="entityManager">The entity manager.</param>
/// <param name="position">The ship position.</param>
/// <param name="speed">The ship speed.</param>
/// <param name="size">The ship size.</param>
/// <param name="player">The player.</param>
public EnemyShip(EntityManager entityManager, Vector2 position, Vector2 speed, Sizes size, Player player)
{
this.entityManager = entityManager;
random = new Random();
Position = position;
this.Size = size;
this.speed = speed;
this.player = player;
}
/// <summary>
/// Remove dead asteroids from the map
/// </summary>
/// <param name="content">The content manager</param>
/// <param name="graphicsDevice">The graphics device</param>
/// <param name="player">The player</param>
private void RemoveDeadAsteroids(ContentManager content, GraphicsDevice graphicsDevice, Player player)
{
/// Remove dead asteroids
for (int i = asteroids.Count - 1; i >= 0; i--)
{
var asteroid = asteroids[i];
if (!(asteroid.Killer is EnemyBullet) && asteroid.Dead)
{
/// Add to the player's score
player.Score += asteroid.ScoreWorth;
}
if (asteroid.Dead)
{
var nextSize = (asteroid.Size == Sizes.Large) ? Sizes.Medium : Sizes.Small;
var explosion = CreateExplosion(nextSize, asteroid.Position, content, graphicsDevice);
entityManager.Add(explosion);
explosion.PlayExplosionSound();
/// Split the asteroid into smaller asteroids.
var splitAsteroids = new List<Asteroid>();
if (asteroid.Size != Sizes.Small)
{
var a1 = new Asteroid(this, player, nextSize);
var a2 = new Asteroid(this, player, nextSize);
a1.Position = new Vector2(asteroid.Position.X, asteroid.Position.Y + 15);
a1.CurrentSpeed = asteroid.CurrentSpeed;
a2.Position = asteroid.Position;
a2.CurrentSpeed = new Vector2(-asteroid.CurrentSpeed.X, -asteroid.CurrentSpeed.Y);
splitAsteroids.AddRange(new Asteroid[] { a1, a2 });
}
/// Remove the asteroid
Remove(asteroid);
foreach (var newAsteroid in splitAsteroids)
{
entityManager.Add(newAsteroid);
asteroids.Add(newAsteroid);
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GameManager"/> class.
/// </summary>
/// <param name="entityManager">The entity manager.</param>
/// <param name="player">The player.</param>
public GameManager(EntityManager entityManager, Player player)
{
this.entityManager = entityManager;
this.player = player;
random = new Random();
/// Set the time keepers to zero
lastAsteroidSpawnTime = TimeSpan.Zero;
}
/// <summary>
/// Update handled on game loop
/// </summary>
/// <param name="content">Content manager</param>
/// <param name="graphicsDevice">Graphics device</param>
/// <param name="player">The player</param>
/// <param name="gameTime">The current game time</param>
public void Update(ContentManager content, GraphicsDevice graphicsDevice, Player player, GameTime gameTime)
{
var spawnTimeReached = (gameTime.TotalGameTime - lastAsteroidSpawnTime) > asteroidSpawnTime;
var spawnLimitReached = freshAsteroids.Count >= asteroidSpawnLimit;
/// Determine if we can spawn an enemy ship
if ((gameTime.TotalGameTime.TotalSeconds - lastShipSpawnTime) > shipSpawnTime
&& shipCount <= 0)
{
CreateEnemyShip(content, graphicsDevice);
lastShipSpawnTime = gameTime.TotalGameTime.TotalSeconds;
}
/// Determine if we can spawn an asteroid
var spawnNewAsteroid = spawnTimeReached && !spawnLimitReached;
if (spawnNewAsteroid)
{
lastAsteroidSpawnTime = gameTime.TotalGameTime;
/// Add an asteroid
var asteroid = CreateAsteroid(content, graphicsDevice);
freshAsteroids.Add(asteroid);
entityManager.Add(asteroid);
}
/// Remove a dead asteroid so we don't have a memory leak
RemoveDeadAsteroids(content, graphicsDevice, player);
asteroidSpawnLimit = (int)Math.Floor((double)player.Score / 1000) + DefaultAsteroidCount;
var previousLives = maxLives;
maxLives = (int)Math.Floor((double)player.Score / 10000) + Player.DefaultLives;
if (previousLives != maxLives)
{
player.Lives += 1;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Titlescreen"/> class.
/// </summary>
/// <param name="player">The player.</param>
public Titlescreen(Player player)
{
this.Player = player;
}
/// <summary>
/// Initialize the new game. Creates any entities that need to be created
/// in order to run the game.
/// </summary>
private void NewGame()
{
if (entityManager == null)
{
/// Create a new entity manager.
entityManager = new EntityManager(Content, GraphicsDevice);
}
else
{
entityManager.Clear();
}
if (inputManager == null)
{
inputManager = new InputManager();
}
/// Create a new player.
player = new Player(entityManager);
if (asteroidManager == null)
{
asteroidManager = new GameManager(entityManager, player);
}
else
{
asteroidManager.Clear();
}
if (titleScreen == null)
{
/// Create a new title screen
titleScreen = new Titlescreen(player);
}
else
{
titleScreen.Player = player;
}
entityManager.Add(new Background());
entityManager.Add(player);
entityManager.Add(new ScoreDisplay(new List<Player>(new Player[] { player })));
}
/// <summary>
/// Initializes a new instance of the <see cref="Asteroid"/> class.
/// This is the class where we can pass in values to create an asteroid.
/// </summary>
/// <param name="asteroidManager">The asteroid manager.</param>
/// <param name="player">The player.</param>
/// <param name="newSize">The new size.</param>
public Asteroid(GameManager asteroidManager, Player player, Sizes newSize)
{
this.asteroidManager = asteroidManager;
this.player = player;
this.Size = newSize;
}
/// <summary>
/// Initializes a new instance of the <see cref="Asteroid"/> class.
/// This defaults to creating a large asteroid and uses default constructor values.
/// </summary>
/// <param name="asteroidManager">The asteroid manager.</param>
/// <param name="player">The player.</param>
public Asteroid(GameManager asteroidManager, Player player)
: this(asteroidManager, player, Sizes.Large)
{
}