public void ApplyAffector(Particle currentParticle, TimeSpan elapsedTime, TimeSpan totalTime)
{
if (currentParticle.Color.A == 254)
{
if (MathHelper.DistanceBetweenTwoPints(currentParticle.Position, _origin) <= _radius)
{
currentParticle.Velocity = new Vector2f(0, 0);
currentParticle.Color = new Color(0, 0, 0, 0);
}
}
else if (MathHelper.DistanceBetweenTwoPints(currentParticle.Position, _explosionOrigin) >= _maxDistance)
{
currentParticle.Color = new Color(
currentParticle.Color.R,
currentParticle.Color.G,
currentParticle.Color.B,
254);
currentParticle.Velocity = 350
* MathHelper.NormalizeVector(
new Vector2f(
_origin.X - currentParticle.Position.X,
_origin.Y - currentParticle.Position.Y));
}
else if (currentParticle.Color.A != 0)
{
var speed = (float)Math.Log(totalTime.TotalSeconds, 5.5f);
if (float.IsInfinity(speed) || float.IsNaN(speed))
{
return;
}
currentParticle.Velocity += MathHelper.NormalizeVector(currentParticle.Velocity) * speed;
}
}
public override void EmitParticles(ParticleSystem particleSystem, TimeSpan deltaTime)
{
for (var i = 0;
i
< (deltaTime == TimeSpan.Zero
? int.MaxValue
: deltaTime.TotalMilliseconds / _interval.TotalMilliseconds) && _particleCount > 0;
i++, _particleCount--)
{
var velocity = new PolarVector(
_rndgenerator.Next(7000, 9000) / 100f,
_rndgenerator.Next((int)(_angle - 85f), (int)(_angle + 85f)));
var particle = new Particle(TimeSpan.Zero) { Position = _position, Velocity = velocity, Color = _color };
EmitParticle(particleSystem, particle);
}
}
protected void EmitParticle(ParticleSystem particleSystem, Particle particle)
{
particleSystem.AddParticle(particle);
}