public void Update(GameTime gameTime)
{
bilboards.RemoveAll(b => bilboardsToRemove.Contains(b));
bilboardsToRemove.Clear();
bilboards.ForEach(b => b.Update(gameTime));
int numberOfParticleToCreate = (int)Math.Max(1, ParticlesPerSecond * gameTime.ElapsedGameTime.TotalSeconds);
for (int i = 0; i < numberOfParticleToCreate; i++)
{
Vector3 moveDir = new Vector3((float)random.NextDouble(), (float)random.NextDouble(), (float)random.NextDouble());
moveDir.Normalize();
BilboardModel b = new BilboardModel(effect, texture);
b.Position = Position;
bool removed = false;
b.AddComponent(new ParticleSystemElementController(b,
(bb, age, deltatime) =>
{
bb.Position = bb.Position + moveDir * (float)deltatime;
if (age > ParticleLiveTime.TotalSeconds)
{
if (!removed)
{
bilboardsToRemove.Add(bb);
}
removed = true;
}
}));
bilboards.Add(b);
}
bilboards.Sort((b1, b2) =>
{
return(Vector3.Distance(b2.Position, Camera.Position) - Vector3.Distance(b1.Position, Camera.Position) <= 0 ? -1 : 1);
});
}
public ParticleSystemElementController(BilboardModel bilboard, Action <BilboardModel, double, double> modifyParticleElement)
{
this.bilboard = bilboard;
this.modifyParticleElement = modifyParticleElement;
}
