Groot2

Hi!

This repository contains updates about the release of Groot2 and (in the future) tutorials and learning material.

You can use submit issues here: https://github.com/BehaviorTree/Groot2/issues

Changelog

1.8.0 (2026-01-18)

• [New feature]: Tree Hierarchy Analysis. Groot2 now automatically detects problematic tree structures:

  • Self-referencing trees - warns when a tree's SubTree node references itself (would cause infinite recursion)
  • Circular dependencies - detects cycles where Tree A → Tree B → Tree A
  • Warning banners appear directly in the graph view for affected trees
  • Trees with hierarchy errors are highlighted in red in the project tree

• [New feature]:Keyboard Shortcuts Dialog (CTRL+H)

  • Ctrl+S - Save current file in Editor mode (new!)
  • Ctrl+Z/Y - Undo/Redo
  • And many more documented in the dialog

• [New feature]: new "Darker" Theme and improved custom theme editor. See preferences.

• [New feature]: trees with only one tree now auto-open that tree correctly

• [Improved]: the welcome screens for Editor, Monitor, and Replay modes have been redesigned for better clarity and usability.

• [Improved]: license status changes (expired, suspended, revoked) now show clear user dialogs.

• [Improved]: the License tab in Preferences now shows the specific reason when a license becomes invalid.

• [Improved]: ovable Model Editor. The Model Editor dialog can now be dragged and repositioned

• [Bugfix]: fixed crash when viewing arrays in Blackboard - The Monitor's blackboard widget no longer crashes when displaying complex types like vectors or arrays (fixes #55, #77). Arrays now display properly with indexed keys.

• [Bugfix]: fixed thread safety issues in Monitor mode - The ZMQ communication manager no longer has race conditions that could cause sporadic crashes. - [Bugfix]: Fixed SubTree expansion failing to update the view state correctly

• [Bugfix]: Fixed port changes not updating the tree state properly (issue #251)

• [Bugfix]: Fixed error tooltips stealing keyboard focus

• [Bugfix]: Fixed opening files via --file command line when the previous mode was not Editor

• [Bugfix]: Fixed license validation for floating licenses.

• [Bugfix]: Opening a single XML file no longer prompts to save the previous project

1.7.1 (2026-01-04)

New feature

A wrong port name is now displayed with red background, and the ToolTip is more visible

• [Bugfix]: fix launch in Windows when another Qt version is installed in the system issue 76
• [Bugfix]: AppImage should be compatible again with Ubuntu 20.04. issue 75
• [Bugfix]: When a licence is not activated, stop trying to reconnect and showing popup issue 73
• [Bugfix]: adding node in Monitor View is not allowed issue 71
• [Bugfix]: Do not reset viewpoint when changing tabs or program issue 70
• [Bugfix]: workaround to real-time monitor and log viewer incorrectly displays subtree children with the same name issue 56
• [Bugfix]: Minor UI icon bug issue 41

1.7.0 (2025-12-14)

Changes since version 1.6.1.

• [Editor]: Some users reported difficulties with empty ports creating attributes in the XML that were confused with empty strings. To prevent this issue, we added the following option in Settings

• [Monitor]: some users reported that the "atio-zoom" when a breakpoint is reached is annoying, especially for large trees. For this reason, we added a check box to disable the autozoom and some convenient (intentionally redundant) buttons to select Continue / SUCCESS / FAILURE from the left panel.

1.2.0 (2023-09-11)

• [Bugfix]: fixed crash when renaming a Subtree
• [Bugfix]: Prevent Model editor when double clicking a Subtree.
• [LogReplay]: add filter-in/filter-out to the Transitions table.
• [LogReplay]: add the ability to export the result of the query into a JSON file

1.1.1 (2023-08-12)

• [Bugfix]: fixed crash when inserting a node during the Creation of a Node connection
• [Bugfix]: fixed crash when pressing the button "Play" on an empty Log Replay
• [License]: when activating the PRO license, user is asket to agree with the EULA.

1.1.0 (2023-07-23)

• [Visualization]: improved layout for Pre/Post Conditions boxes.
• [Editor]: Adding the ability to save XML files using the same syntax used by Groot1 (disabled by default in Preferences).
• [Editor]: Added ParallelAll and ScriptCondition to the built-in nodes.
• [Editor]: allow files that only contain include tags, but not BehaviorTree to be loaded.
• [Monitor]: Breakpoints can now be saved/loaded from file.
• [Monitor]: Add compatibility with the Groo2Publisher in BT.CPP 3.8+.
• [LogReplay/Monitor]: Log parsing will now use plugins. Users will be soon able to create their own plugins to save/load logs.
• [LogReplay]: the range of the log can be changed; in other words, you can zoom on a particular section of the timeline.
• [Licensing]: append license key to offline activation file.