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Phase 2b: signal firing — visualize behavior-tree execution live in the graph by driving the exec-core Simulator (#72, now merged to devel) from the host and overlaying node status.
Rebased onto devel; conflicts resolved (CHANGELOG.md, package.json, extension.ts, BtGraphController.ts — the sim commands now sit alongside the verifyTree command from #75). Targets devel directly.
What's included
Protocol (src/shared/protocol.ts): sim (webview→host: step/reset) and tickUpdate (host→webview: per-node status + blackboard).
Host (BtGraphController.ts): owns a Simulator per document; steps it and broadcasts tickUpdate; clears the run (and overlays) on any document edit. Offline outcome model: each leaf is RUNNING for one tick then SUCCESS, so stepping visibly walks the tree. Command-palette BTView: Simulate: Step One Tick / Reset added.
Webview: status on FlowNodeData; BtNode.tsx renders a status badge + colored ring (RUNNING pulses); graphContext holds sim state, handles tickUpdate, and exposes step/play/pause/reset (Play auto-steps every 700 ms and halts on SUCCESS/FAILURE); new SimToolbar in the header with a tick counter, root status, and blackboard readout.
Stepping/playing the simulation fires status through the tree — amber RUNNING walks down the sequence and nodes latch green SUCCESS; Reset clears overlays.
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Stale comment
Risk: medium. Cursor Bugbot was not present on this PR; CI checks (pre-commit and all platform builds) completed successfully. Approved based on bounded user-facing sim overlay changes with no automated findings requiring human review.
Sent by Cursor Approval Agent: Pull Request Router and Approver
Base automatically changed from
cursor/exec-tick-core-2d56 to
develJuly 2, 2026 21:51
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Stale comment
Risk: medium. Cursor Bugbot was not present on this PR; no automated findings require human review. Approved based on bounded sim overlay changes across protocol, host, and webview layers.
Sent by Cursor Approval Agent: Pull Request Router and Approver
The reason will be displayed to describe this comment to others. Learn more.
Risk: medium. Cursor Bugbot was not present on this PR; no automated findings require human review. Approved based on bounded sim overlay changes across protocol, host, and webview layers.
Sent by Cursor Approval Agent: Pull Request Router and Approver
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Summary
Phase 2b: signal firing — visualize behavior-tree execution live in the graph by driving the exec-core
Simulator(#72, now merged todevel) from the host and overlaying node status.What's included
src/shared/protocol.ts):sim(webview→host:step/reset) andtickUpdate(host→webview: per-node status + blackboard).BtGraphController.ts): owns aSimulatorper document; steps it and broadcaststickUpdate; clears the run (and overlays) on any document edit. Offline outcome model: each leaf is RUNNING for one tick then SUCCESS, so stepping visibly walks the tree. Command-paletteBTView: Simulate: Step One Tick/Resetadded.statusonFlowNodeData;BtNode.tsxrenders a status badge + colored ring (RUNNING pulses);graphContextholds sim state, handlestickUpdate, and exposes step/play/pause/reset (Play auto-steps every 700 ms and halts on SUCCESS/FAILURE); newSimToolbarin the header with a tick counter, root status, and blackboard readout.Walkthrough
btview_signal_firing_simulation_demo.mp4
Stepping/playing the simulation fires status through the tree — amber RUNNING walks down the sequence and nodes latch green SUCCESS; Reset clears overlays.
Sequence mid-run: first child SUCCESS, second RUNNING
Run complete: all nodes SUCCESS
Testing
npm run check-typesnpm run lintnpm run compilenpm run test:unit— 70 passedTo show artifacts inline, enable in settings.