private void AddExplosionParticle(Vector2 explosionPos, float explosionSize, GameTime gameTime)
{
Vector2 displacement = new Vector2((float)rand.NextDouble() * explosionSize, 0);
displacement = Vector2.Transform(displacement, Matrix.CreateRotationZ(MathHelper.ToRadians(rand.Next(360))));
Esplosione espl = new Esplosione(explosionPos, gameTime, displacement * 2.0f);
listaBoom.Add(espl);
}
public void DrawExplosione()
{
spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.Additive);
for (int i = 0; i < listaBoom.Count; i++)
{
Esplosione particle = listaBoom[i];
Vector2 coordEspl = particle.Coord;
coordEspl.X += nuvola.Width / 2;
coordEspl.Y += nuvola.Height / 2;
spriteBatch.Draw(boom, coordEspl, null, Color.White, i, new Vector2(256, 256), 0.5f, SpriteEffects.None, 1);//particle.Scaling
}
spriteBatch.End();
}
private void UpdateParticles(GameTime gameTime)
{
float now = (float)gameTime.TotalGameTime.TotalMilliseconds;
for (int i = listaBoom.Count - 1; i >= 0; i--)
{
Esplosione particle = listaBoom[i];
// float timeAlive = now - particle.BirthTime;
if (now > particle.AliveTime.TotalMilliseconds)
{
listaBoom.RemoveAt(i);
}
else
{
particle.Update();
listaBoom[i] = particle;
}
}
}
