/// <summary>
/// Constructs a new projectile.
/// </summary>
/// <param name="world">The world that this projectile belongs to.</param>
/// <param name="owner">The ship that fired this projectile, if any.</param>
/// <param name="direction">The initial direction for this projectile.</param>
public Projectile(World world, Ship owner, Vector2 direction)
: base(world)
{
this.owner = owner;
this.position = owner.Position;
this.velocity = direction;
}
/// <summary>
/// Constructs a new power-up.
/// </summary>
/// <param name="world">The world that this power-up belongs to.</param>
public PowerUp(World world)
: base(world)
{
this.mass = 500f;
this.polygon = VectorPolygon.CreateCircle(Vector2.Zero, 16f, 16);
this.innerPolygon = VectorPolygon.CreateCircle(Vector2.Zero, 10f, 16);
}
/// <summary>
/// Constructs a new actor.
/// </summary>
/// <param name="world">The world that this actor belongs to.</param>
public Actor(World world)
{
if (world == null)
{
throw new ArgumentNullException("world");
}
this.world = world;
}
/// <summary>
/// Constructs a new laser projectile.
/// </summary>
/// <param name="world">The world that this projectile belongs to.</param>
/// <param name="owner">The ship that fired this projectile, if any.</param>
/// <param name="direction">The initial direction for this projectile.</param>
public LaserProjectile(World world, Ship owner, Vector2 direction)
: base(world, owner, direction)
{
this.radius = 0.5f;
this.speed = 640f;
this.duration = 5f;
this.damageAmount = 20f;
this.damageOwner = false;
this.mass = 0.5f;
this.explodes = false;
this.explosionColors = new Color[]
{ Color.White, Color.Gray, Color.Gray, Color.Silver, Color.Yellow };
}
/// <summary>
/// Constructs a new rocket projectile.
/// </summary>
/// <param name="world">The world that this projectile belongs to.</param>
/// <param name="owner">The ship that fired this projectile, if any.</param>
/// <param name="direction">The initial direction for this projectile.</param>
public RocketProjectile(World world, Ship owner, Vector2 direction)
: base(world, owner, direction)
{
this.radius = 8f;
this.life = 80f;
this.mass = 3f;
this.speed = 520f;
this.duration = 4f;
this.damageAmount = 100f;
this.damageOwner = false;
this.damageRadius = 128f;
this.explodes = true;
this.explosionColors = new Color[]
{ Color.Orange, Color.Gray, Color.Gray, Color.Silver };
this.polygon = VectorPolygon.CreateRocket();
this.color = Color.Orange;
}
/// <summary>
/// Constructs a new mine projectile.
/// </summary>
/// <param name="world">The world that this projectile belongs to.</param>
/// <param name="owner">The ship that fired this projectile, if any.</param>
/// <param name="direction">The initial direction for this projectile.</param>
public MineProjectile(World world, Ship owner, Vector2 direction)
: base(world, owner, direction)
{
this.radius = 16f;
this.life = 15f;
this.speed = 64f;
this.duration = 15f;
this.mass = 5f;
this.damageAmount = 200f;
this.damageOwner = true;
this.damageRadius = 80f;
this.explodes = true;
this.explosionColors = new Color[]
{ Color.Red, Color.Maroon, Color.White, Color.Silver };
this.polygon = VectorPolygon.CreateMine();
this.color = Color.Red;
}
/// <summary>
/// Construct a new asteroid.
/// </summary>
/// <param name="world">The world that this asteroid belongs to.</param>
/// <param name="radius">The size of the asteroid.</param>
public Asteroid(World world, float radius)
: base(world)
{
// all asteroids are gray
this.color = Color.Gray;
// create the polygon
this.polygon = VectorPolygon.CreateAsteroid(radius);
// the asteroid polygon might not be as big as the original radius,
// so find out how big it really is
for (int i = 0; i < this.polygon.Points.Length; i++)
{
float length = this.polygon.Points[i].Length();
if (length > this.radius)
{
this.radius = length;
}
}
// calculate the mass
this.mass = radius * massRadiusRatio;
}
/// <summary>
/// Construct a new ship, for the given player.
/// </summary>
/// <param name="world">The world that this ship belongs to.</param>
/// <param name="playerIndex">
/// The Gamepad player index that controls this ship.
/// </param>
public Ship(World world, PlayerIndex playerIndex)
: base(world)
{
this.playerIndex = playerIndex;
this.radius = 20f;
this.mass = 32f;
this.color = shipColorsByPlayerIndex[(int)this.playerIndex];
this.polygon = VectorPolygon.CreatePlayer();
this.shieldPolygon = VectorPolygon.CreateCircle(Vector2.Zero, 20f, 16);
}
/// <summary>
/// Initialize the game, after the ScreenManager is set, but not every time
/// the graphics are reloaded.
/// </summary>
public void Initialize()
{
// create and add the bloom effect
bloomComponent = new BloomComponent(ScreenManager.Game);
ScreenManager.Game.Components.Add(bloomComponent);
// do not automatically draw the bloom component
bloomComponent.Visible = false;
// create the world
world = new World(new Vector2(ScreenManager.GraphicsDevice.Viewport.Width,
ScreenManager.GraphicsDevice.Viewport.Height));
// retrieve the audio manager
audio = (AudioManager)ScreenManager.Game.Services.GetService(
typeof(AudioManager));
world.AudioManager = audio;
// start up the music
audio.PlayMusic("gameMusic");
// start up the game
world.StartNewGame();
gameOver = false;
}
/// <summary>
/// Construct a new world actor.
/// </summary>
/// <param name="world">The world that this world-actor belongs to.</param>
public WorldActor(World world)
: base(world)
{
radius = 0f;
mass = 100f;
}
/// <summary>
/// Constructs a new rocket-launcher power-up.
/// </summary>
/// <param name="world">The world that this power-up belongs to.</param>
public RocketPowerUp(World world)
: base(world)
{
this.color = Color.Orange;
}
/// <summary>
/// Constructs a new power-up.
/// </summary>
/// <param name="world">The world that this power-up belongs to.</param>
public PowerUp(World world) : base(world)
{
this.mass = 500f;
this.polygon = VectorPolygon.CreateCircle(Vector2.Zero, 16f, 16);
this.innerPolygon = VectorPolygon.CreateCircle(Vector2.Zero, 10f, 16);
}