IEnumerator LoadSnapshot()
{
// Make a backup clone of the snapshot's position cache
positionCache = (Vector3[])particles.snapshots[snapshotToLoad].settings.snapshotData.position.Clone();
// Alter the positions in the live snapshot's position data
for (int i = 0; i < particles.snapshots[snapshotToLoad].settings.snapshotData.position.Length; i++)
{
particles.snapshots[snapshotToLoad].settings.snapshotData.position[i] = transformPoint.TransformPoint(particles.snapshots[snapshotToLoad].settings.snapshotData.position[i]);
}
// Make sure that you're not using the stored Transform (otherwise it will pop into place)
particles.snapshots[snapshotToLoad].loadTransform = false;
// Load the snapshot (this is where the transition kicks in)
if (mask < 0)
{
// Load regularly
particles.Load(snapshotToLoad);
}
else
{
// Load and alter particle mask during transition
particles.LoadAndApplyMask(snapshotToLoad, mask);
}
// Wait till loading is done (will return false once the transition is finished)
while (particles.IsLoading())
{
yield return(null);
}
// Put the position cache backup back so it will appear untouched till next load, otherwise we may get positions warped additionally next load
particles.snapshots[snapshotToLoad].settings.snapshotData.position = (Vector3[])positionCache.Clone();
// Increment the snapshot to load for next call (just for this example)
snapshotToLoad = (snapshotToLoad + 1) % particles.snapshots.Count;
}