With a single change ctrl+Z should revert that last change. Since there was only one change pressing ctrl+Z again should do nothing, but it executes some weird other changes and never reverts to the original.
That doesn't sound right. I only ran a few quick (superficial) tests before publishing, and it seemed to work.I tried it again just now and didn't notice any issues.
Please give me a way to reproduce the problem.
Check if you add movement to the undo queue. You should only add a change to the queue with mouse-up, not every coordinate in the path between the original and end points.
Look at the Terrain Generator where the arrows at the top execute undo/redo.
You're right. The main difference is that TerrenGenerator was created by a professional (Emmanuel), while this one was made by someone with no training in the field (I'm not a programmer).Hint: RoomsTerrainGeneratorPlugin.java
import javax.swing.undo.AbstractUndoableEdit;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.UndoManager;
import javax.swing.undo.UndoableEditSupport;
line 431 // Manage local undo / redo actions with a separated undo manager
line 770 elevationsUndoSupport: investigate and use it!
line 1422 postElevationChange You probably already know that "super" refers to the parent class.)
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