/// <summary>
/// Removes the old required control group field from the parent emitter's pool
/// </summary>
private void RemoveControlGroup()
{
ParticleSpawnTrigger?.RemoveRequiredParentFields(Parent);
var groupIndex = (int)parentControlFlag;
if (groupIndex >= ParticleFields.ChildrenFlags.Length)
{
return;
}
Parent?.RemoveRequiredField(ParticleFields.ChildrenFlags[groupIndex]);
if (Parent != null)
{
Parent.DelayParticleDeath--;
}
}
/// <inheritdoc />
public unsafe override void SpawnNew(float dt, ParticleEmitter emitter)
{
if (isParentNameDirty)
{
RemoveControlGroup();
Parent = emitter.CachedParticleSystem?.GetEmitterByName(ParentName);
AddControlGroup();
isParentNameDirty = false;
}
var spawnerState = GetUpdatedState(dt, emitter);
if (spawnerState != SpawnerState.Active)
{
return;
}
// Get parent pool
if (Parent == null)
{
return;
}
var parentPool = Parent.Pool;
var parentParticlesCount = parentPool.LivingParticles;
if (parentParticlesCount == 0)
{
return;
}
var spawnControlGroup = GetSpawnControlField();
if (!spawnControlGroup.IsValid())
{
return;
}
ParticleSpawnTrigger?.PrepareFromPool(parentPool);
var randomSeedFieldParent = parentPool.GetField(ParticleFields.RandomSeed);
int totalParticlesToEmit = 0;
foreach (var parentParticle in parentPool)
{
uint particlesToEmit = 0;
ParticleChildrenAttribute childrenAttribute = (*((ParticleChildrenAttribute *)parentParticle[spawnControlGroup]));
var carryOver = childrenAttribute.CarryOver;
var parentEventTriggered = ParticleSpawnTrigger?.HasTriggered(parentParticle) ?? 0f;
if (parentEventTriggered > 0)
{
var particlesToEmitFloat = SpawnCount.X;
if (randomSeedFieldParent.IsValid())
{
var randSeed = parentParticle.Get(randomSeedFieldParent);
particlesToEmitFloat = (SpawnCount.X + (SpawnCount.Y - SpawnCount.X) * randSeed.GetFloat(0));
}
particlesToEmitFloat *= parentEventTriggered;
particlesToEmit = (uint)Math.Floor(particlesToEmitFloat + carryOver);
carryOver += (particlesToEmitFloat - particlesToEmit);
}
childrenAttribute.CarryOver = carryOver;
childrenAttribute.ParticlesToEmit = particlesToEmit;
totalParticlesToEmit += (int)particlesToEmit;
(*((ParticleChildrenAttribute *)parentParticle[spawnControlGroup])) = childrenAttribute;
}
emitter.EmitParticles(totalParticlesToEmit);
}