/// <summary>
/// Constructor.
/// </summary>
public BackgroundScreen()
{
TransitionOnTime = TimeSpan.FromSeconds(1.0);
TransitionOffTime = TimeSpan.FromSeconds(1.0);
random = new Random();
particleSystems = new CollectCollection <ParticleSystem>(null);
}
/// <summary>
/// Construct a new World object, holding the game simulation.
/// </summary>
public World(Vector2 dimensions)
{
this.dimensions = dimensions;
safeDimensions = new Rectangle(
(int)(dimensions.X * 0.05f), (int)(dimensions.Y * 0.05f),
(int)(dimensions.X * 0.90f), (int)(dimensions.Y * 0.90f));
// create the players
ships = new Ship[4];
ships[0] = new Ship(this, PlayerIndex.One);
ships[1] = new Ship(this, PlayerIndex.Two);
ships[2] = new Ship(this, PlayerIndex.Three);
ships[3] = new Ship(this, PlayerIndex.Four);
// create the starfield
starfield = new Starfield(starCount, new Rectangle(
starfieldBuffer * -1,
starfieldBuffer * -1,
(int)this.dimensions.X + starfieldBuffer * 2,
(int)this.dimensions.Y + starfieldBuffer * 2));
// create a new list of actors
actors = new CollectCollection <Actor>(this);
// create a new list of particle systems
particleSystems = new CollectCollection <ParticleSystem>(this);
}