public void Update(ParticleSystem system, long delta)
{
this.engine = system;
if (!adjust)
{
adjustx = 0;
adjusty = 0;
}
else
{
adjust = false;
}
if (updateImage)
{
updateImage = false;
string name = (relativePath + imageName).Trim();
if (name.Length > 0)
{
try {
image = LTextures.LoadTexture(name);
} catch (Exception e) {
image = null;
Log.Exception(e);
}
}
}
if ((wrapUp) || ((length.IsEnabled()) && (timeout < 0)) ||
((emitCount.IsEnabled() && (leftToEmit <= 0))))
{
if (particleCount == 0)
{
completed = true;
}
}
particleCount = 0;
if (wrapUp)
{
return;
}
if (length.IsEnabled())
{
if (timeout < 0)
{
return;
}
timeout -= delta;
}
if (emitCount.IsEnabled())
{
if (leftToEmit <= 0)
{
return;
}
}
nextSpawn -= delta;
if (nextSpawn < 0)
{
nextSpawn = (int)spawnInterval.Random();
int count = (int)spawnCount.Random();
for (int i = 0; i < count; i++)
{
Particle p = system.GetNewParticle(this, initialLife.Random());
p.SetSize(initialSize.Random());
p.SetPosition(x + xOffset.Random(), y + yOffset.Random());
p.SetVelocity(0, 0, 0);
float dist = initialDistance.Random();
float power = speed.Random();
if ((dist != 0) || (power != 0))
{
float s = spread.GetValue(0);
float ang = (s + angularOffset.GetValue(0) - (spread
.GetValue() / 2)) - 90;
float xa = MathUtils.Cos(MathUtils.ToRadians(ang)) * dist;
float ya = MathUtils.Sin(MathUtils.ToRadians(ang)) * dist;
p.AdjustPosition(xa, ya);
float xv = MathUtils.Cos(MathUtils.ToRadians(ang));
float yv = MathUtils.Sin(MathUtils.ToRadians(ang));
p.SetVelocity(xv, yv, power * 0.001f);
}
if (image != null)
{
p.SetImage(image);
}
ColorRecord start = (ColorRecord)colors[0];
p.SetColor(start.col.r, start.col.g, start.col.b,
startAlpha.GetValue(0) / 255.0f);
p.SetUsePoint(usePoints);
p.SetOriented(useOriented);
if (emitCount.IsEnabled())
{
leftToEmit--;
if (leftToEmit <= 0)
{
break;
}
}
}
}
}