public void StartNewGame()
{
// create the walls
CreateWalls();
// clear out the actors list
actors.Clear();
// add the world actor
WorldActor worldActor = new WorldActor(this);
actors.Add(worldActor);
// add the players to the actor list - they won't be removed
for (int i = 0; i < ships.Length; i++)
{
actors.Add(ships[i]);
}
// spawn asteroids
switch (WorldRules.AsteroidDensity)
{
case AsteroidDensity.None:
break;
case AsteroidDensity.Low:
SpawnAsteroids(4, 3, 0);
break;
case AsteroidDensity.Medium:
SpawnAsteroids(6, 4, 1);
break;
case AsteroidDensity.High:
SpawnAsteroids(8, 6, 2);
break;
}
// set up the power-up timer for the initial delay
powerUpTimer = initialPowerUpDelay;
// set up the starfield
starfield.SetTargetPosition(dimensions * 0.5f);
}
/// <summary>
/// Loads graphics content for this screen. The background texture is quite
/// big, so we use our own local ContentManager to load it. This allows us
/// to unload before going from the menus into the game itself, wheras if we
/// used the shared ContentManager provided by the ScreenManager, the content
/// would remain loaded forever.
/// </summary>
public override void LoadContent()
{
lineBatch = new LineBatch(ScreenManager.GraphicsDevice);
titleTexture = ScreenManager.Game.Content.Load<Texture2D>("Textures/title");
int viewportWidth = ScreenManager.GraphicsDevice.Viewport.Width;
int viewportHeight = ScreenManager.GraphicsDevice.Viewport.Height;
// update the projection in the line-batch
lineBatch.SetProjection(Matrix.CreateOrthographicOffCenter(0.0f,
viewportWidth, viewportHeight, 0.0f, 0.0f, 1.0f));
// recreate the particle systems
particleSystems.Clear();
for (int i = 0; i < 4; i++)
{
particleSystems.Add(new ParticleSystem(
new Vector2(random.Next(viewportWidth), random.Next(viewportHeight)),
Vector2.Zero, 64, 256, 128,
1f + 2f * (float)random.NextDouble(), 0.05f, explosionColors));
}
base.LoadContent();
}
