public override void Update(GameTime gameTime)
{
float deltaTime = (float)gameTime.ElapsedGameTime.TotalMilliseconds;
explosionExpandTimer += deltaTime;
explosionEndTimer -= deltaTime;
if (explosionEndTimer <= 0)
{
explosionEffects.Clear();
GameContentManager.Sprites.Remove(this);
}
if (explosionExpandTimer >= ExplosionExpandingInterval && explosionRadius > 0) // explosion has to expand
{
// explosion hasn't started expanding yet
if (explosionTopEffects.Count == 0)
{
ExplosionSprite center = explosionEffects.ElementAt(0);
Vector2 offsetPos = Vector2.Zero;
ExplosionSprite e;
// top expand
if (topExpansionAllowed)
{
offsetPos = new Vector2(0, center.SpriteTexture.Height * center.Scale);
e = new ExplosionSprite(center.Position - offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionTopEffects.Add(e);
explosionEffects.Add(e);
}
// bottom expand
if (bottomExpansionAllowed)
{
offsetPos = new Vector2(0, center.SpriteTexture.Height * center.Scale);
e = new ExplosionSprite(center.Position + offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionBottomEffects.Add(e);
explosionEffects.Add(e);
}
// right expand
if (rightExpansionAllowed)
{
offsetPos = new Vector2(center.SpriteTexture.Width * center.Scale, 0);
e = new ExplosionSprite(center.Position + offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionRightEffects.Add(e);
explosionEffects.Add(e);
}
// left expand
if (leftExpansionAllowed)
{
offsetPos = new Vector2(center.SpriteTexture.Width * center.Scale, 0);
e = new ExplosionSprite(center.Position - offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionLeftEffects.Add(e);
explosionEffects.Add(e);
}
}
else if (explosionRadius > 0) //in case this isn't the first expanding
{
ExplosionSprite lastEffect;
Vector2 offsetPos = Vector2.Zero;
ExplosionSprite e;
// top expand
if (topExpansionAllowed)
{
lastEffect = explosionTopEffects.ElementAt(explosionTopEffects.Count - 1);
offsetPos = new Vector2(0, lastEffect.SpriteTexture.Height * lastEffect.Scale);
e = new ExplosionSprite(lastEffect.Position - offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionTopEffects.Add(e);
explosionEffects.Add(e);
}
// bottom expand
if (bottomExpansionAllowed)
{
lastEffect = explosionBottomEffects.ElementAt(explosionBottomEffects.Count - 1);
offsetPos = new Vector2(0, lastEffect.SpriteTexture.Height * lastEffect.Scale);
e = new ExplosionSprite(lastEffect.Position + offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionBottomEffects.Add(e);
explosionEffects.Add(e);
}
// right expand
if (rightExpansionAllowed)
{
lastEffect = explosionRightEffects.ElementAt(explosionRightEffects.Count - 1);
offsetPos = new Vector2(lastEffect.SpriteTexture.Width * lastEffect.Scale, 0);
e = new ExplosionSprite(lastEffect.Position + offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionRightEffects.Add(e);
explosionEffects.Add(e);
}
// left expand
if (leftExpansionAllowed)
{
lastEffect = explosionLeftEffects.ElementAt(explosionLeftEffects.Count - 1);
offsetPos = new Vector2(lastEffect.SpriteTexture.Width * lastEffect.Scale, 0);
e = new ExplosionSprite(lastEffect.Position - offsetPos, 0);
e.LoadContent(GameContentManager.Game.Content);
e.GameContentManager = GameContentManager;
explosionLeftEffects.Add(e);
explosionEffects.Add(e);
}
}
explosionExpandTimer = 0;
explosionRadius--;
}
handleCollisions();
}
private void Explode()
{
var e = new ExplosionSprite(Position, 3);
e.GameContentManager = GameContentManager;
e.LoadContent(GameContentManager.Game.Content);
GameContentManager.Sprites.Add(e);
GameContentManager.Sprites.Remove(this);
SoundEffect explosion = GameContentManager.Game.Content.Load<SoundEffect>("explo");
explosion.Play();
}