/// <summary>
/// Add a particle to the particle system.
/// </summary>
private void AddParticle()
{
if (this.Particles.Count < this.psp.MaxParticles)
{
ParticleParameters pp = new ParticleParameters();
pp.InitialPosition = this.psp.Position;
pp.Velocity = (this.psp.Speed + this.GetRandom() * this.psp.SpeedVariance) *
Vector3.Normalize((this.psp.Direction + new Vector3(
this.GetRandom() * this.psp.DirectionVariance,
this.GetRandom() * this.psp.DirectionVariance,
this.GetRandom() * this.psp.DirectionVariance)));
pp.Colour = new Color(
this.GetRandomByte(this.psp.Colour.R, this.psp.ColourVariance),
this.GetRandomByte(this.psp.Colour.G, this.psp.ColourVariance),
this.GetRandomByte(this.psp.Colour.B, this.psp.ColourVariance),
this.psp.Colour.A);
pp.LifeTime = this.psp.LifeTime + this.GetRandom() * this.psp.LifeTimeVariance;
pp.Mass = this.psp.Mass + this.GetRandom() * this.psp.MassVariance;
pp.Gravity = this.psp.Gravity;
pp.AirResistance = this.psp.AirResistance;
// Create and add the particle to the system
Particle newParticle = new Particle(pp);
this.Particles.Add(newParticle);
}
}
/// <summary>
/// Creates a particle for use by a particle system.
/// </summary>
/// <param name="pp">A list of supplied parameters.</param>
public Particle(ParticleParameters pp)
{
this._position = pp.InitialPosition;
this.velocity = pp.Velocity;
this._colour = pp.Colour;
this._timeToDeath = pp.LifeTime;
this.mass = pp.Mass;
this.gravity = pp.Gravity;
this.airResistance = pp.AirResistance;
}
