Undo and Redo
Every scene edit is undoable, and the history is shared across the panels that edit the same thing, so Ctrl+Z does what you expect no matter which panel you were working in.
| Key | Action |
|---|---|
Ctrl+Z | Undo |
Ctrl+Y or Ctrl+Shift+Z | Redo |
While you are typing in a text field, Ctrl+Z undoes the text edit rather than a scene action.
Undo is an editor feature. It does not ship in an exported game.
What can be undone
| Area | Covered |
|---|---|
| Transforms | Moving, rotating and scaling in both the 3D and 2D viewports. Each drag is one step, and so is an arrow-key nudge. |
| The Inspector | Every field, plus adding, removing and disabling components. Removing restores a component with its edited values, not a default. |
| The Hierarchy | Rename, reparent, reorder, group, lock, hide, spawn and delete. |
| Deleting | Anything, including whole groups with their children. A deleted entity comes back under its original parent, in place. |
| Spawning | Shapes, presets, components. |
| Terrain | Each sculpt or paint stroke is one step. |
| Tilemaps | Each paint, erase or fill stroke, and the Randomise scatter. |
| The material editor | Node moves, connections, deletes, adds and pin edits. |
| The particle editor | Any change to the effect being edited. |
| The animation timeline | Keyframe drags, deletes, interpolation changes and recorded edits. |
The History panel
Everything on the main scene appears in the History panel, which lists the stack and lets you jump to any point by clicking an entry.
History is per document
The viewport, Hierarchy, Inspector and terrain tools all edit the same scene, so they share one history.
Self-contained document editors such as the material graph keep their own. Whichever editor you last clicked into is the one Ctrl+Z acts on. Edit some material nodes, press Ctrl+Z, and it undoes in the material editor. Click back into the viewport and Ctrl+Z undoes scene edits again.
Loading, creating or switching scenes clears the scene history, because the old entities no longer exist. Switching projects clears everything.
See also
- Keyboard Shortcuts
- Making Edits Undoable for plugin authors