My simulation isn’t updating
This is a very common misunderstanding, so you might have already experienced this before. You want to make changes to your node tree, but your simulation is not changing anything.
This is completely normal. This is because Blender makes use of a simulation cache, which we’ve seen in Chapter 18.
When you make a change to your node tree, Blender does not always remove the simulation cache, as it’s still saved. We can easily check whether a cache should be refreshed in our timeline, which is shown by the striped line in Figure 21.1:
Figure 21.1: Up-to-date cache versus outdated cache
The solution to this problem is to reset the timeline to the beginning frame, which we can do by pressing Shift + Left Arrow.
Once you do this, you’ll see that your simulation has been updated and the cache is removed!
Keep in mind that this is not necessary for the Repeat Zone, as the Repeat Zone works by constantly repeating...
