Timeline, replay and undo

Every batch of block changes is one step on the timeline at the bottom, labelled with its author: your agent or you.

Looking never changes anything#

• Click a step to see that version. The view shows the step's label and how many blocks were placed, replaced and removed; the changes light up briefly (agent blue, yours amber, removed red).
• Replay plays the changes as an animation from the step you look at (or from the start) to the live build, layer by layer. Choose 0.5×–4× speed and whether the camera follows each change. If your agent adds steps meanwhile, the replay catches up.
• Live or Esc returns to the current build.

None of this changes blocks, saves anything or interrupts a working agent – you can follow along while it builds.

Changing the live build#

Only Restore (make the version on screen live again), Undo, Redo and ⌘/Ctrl Z change the live build, as normal undoable steps. If your agent is working right now, a dialog asks first (Your agent is still working): Let it work or do it anyway. Its next edit is then rejected and it continues from the restored version.

Branches are kept#

If you edit after going back in time, the previous end of the timeline is first saved as a separate private project, so nothing is lost.

How much is kept#

The timeline keeps up to 48 steps and 1.5 million block changes; the first position is the oldest step still kept.