//run particle logic every so 'value' steps
internal void RunParticleTypeEvery(ParticleSystem system, int step, int value, ref ParticleSystemActionData child)
{
//int stepBase = step + timeStepCount;
if (value > 3)
{
//step is getting pretty big...
//so...
//don't loop all the particles, loop the timesteps that match
//then loop all their particles.
//this accesses less data but jumps around a lot.
SystemTimeStep timestep;
for (int t = 0; t < this.timeStepCount; t += value)
{
//this step is affected, so iterate all it's children.
timestep = this.timeSteps[(step + t) & timeStepMask];
uint index = timestep.firstParticleIndex;
for (int i = 0; i < timestep.count; i++)
{
child.RunParticleChildren(system, this, index, this.particles[index].index, step);
index = particles[index].nextParticleIndexForTimeStep;
}
}
}
else
{
uint cap =particleCapacity;
float f = 0;
for (uint i = 0; i < cap; i++)
{
if (((step + particles[i].timeStepIndex) % value) == 0)
child.RunParticleChildren(system, this, i, f, step);
f++;
}
}
}
//run particle logic one particle at a time
internal void RunParticleTypeOneByOne(ParticleSystem system, int step, ref ParticleSystemActionData child)
{
uint cap = particleCapacity;
float f = 0;
for (uint i = 0; i < cap; i++)
child.RunParticle(system, this, i,f++, step);
}