public Vector3 CalculatePositionVelocityGravity(ColoredParticle particle)
{
var lifeTime = (CurrentTime - particle.SpawnTime);
var ret = particle.StartPosition
+ particle.StartVelocity * lifeTime
+ Gravity * lifeTime * lifeTime;
return(ret);
}
public void Update(float elapsed)
{
if (!emitting)
{
return;
}
elapsedLeft += elapsed;
while (elapsedLeft > EmitInterval)
{
elapsedLeft -= EmitInterval;
//TODO: when emitting multiple correct for timing?
var p = new ColoredParticle();
InitializeParticle(p);
p.SpawnTime = effect.CurrentTime;
effect.AddParticle(p);
}
}
public void AddParticle(ColoredParticle particle)
{
particles.Add(particle);
}