public void ResetMeteors()
{
while (meteorList.Count < 10)
{
var angle = rnd.Next() * MathHelper.TwoPi;
var m = new Meteor(MeteorType.Big)
{
Position = new Vector2(Globals.GameArea.Left + (float)rnd.NextDouble() * Globals.GameArea.Width,
Globals.GameArea.Top + (float)rnd.NextDouble() * Globals.GameArea.Height),
Rotation = angle,
Speed = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle)) * rnd.Next(20, 60) / 30.0f
};
if (!Globals.RespawnArea.Contains(m.Position))
{
meteorList.Add(m);
}
}
}
public static IEnumerable <Meteor> BreakMeteor(Meteor meteor)
{
List <Meteor> meteorList = new List <Meteor>();
if (meteor.Type == MeteorType.Small)
{
return(meteorList);
}
for (int i = 0; i < 3; i++)
{
var angle = (float)Math.Atan2(meteor.Speed.Y, meteor.Speed.X) - MathHelper.PiOver4
+ MathHelper.PiOver4 * i;
meteorList.Add(new Meteor(meteor.Type + 1)
{
Position = meteor.Position,
Rotation = angle,
Speed = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle)) * meteor.Speed.Length()
});
}
return(meteorList);
}
/// <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();
}
KeyboardState state = Keyboard.GetState();
if (state.IsKeyDown(Keys.Up))
{
player.Accelerate();
}
if (state.IsKeyDown(Keys.Left))
{
player.Rotation -= 0.05f;
}
if (state.IsKeyDown(Keys.Down))
{
player.Break();
}
else if (state.IsKeyDown(Keys.Right))
{
player.Rotation += 0.05f;
}
if (state.IsKeyDown(Keys.Space))
{
Shot s = player.Shoot();
if (s != null)
{
laserSound.Play();
shotList.Add(s);
}
}
foreach (Shot shot in shotList)
{
shot.Update(gameTime);
Meteor meteor = meteorList.FirstOrDefault(m => m.CollidesWith(shot));
if (meteor != null)
{
meteorList.Remove(meteor);
meteorList.AddRange(Meteor.BreakMeteor(meteor));
explosionList.Add(new Explosion()
{
Position = meteor.Position,
Scale = meteor.ExplosionScale
});
shot.IsDead = true;
explosionSound.Play();
}
}
foreach (Explosion explosion in explosionList)
{
explosion.Update(gameTime);
}
foreach (Meteor meteor in meteorList)
{
meteor.Update(gameTime);
}
shotList.RemoveAll(s => s.IsDead || !Globals.GameArea.Contains(s.Position));
explosionList.RemoveAll(e => e.IsDead);
player.Update(gameTime);
prevousKbState = state;
// TODO: Add your update logic here
base.Update(gameTime);
}