thejayman77
85a8ce1136
Fixes a real defect and reworks the calibration/settings flow per Jay's on-device review. Bug: the second capture hung on 'capturing'. The completion code wrote capture=null (a LaunchedEffect key) then awaited the suspend setSurfaceCalibration BEFORE setting phase=COMPLETE; at the suspension Compose cancelled the effect mid-write, stranding the transition. The effect body is now fully synchronous and persistence runs on an independent scope.launch. Verified end-to-end on device. Settings screen (new): reached from the Level header gear (was: gear jumped straight into calibration). Calibration is a sleek button in its own section; Units, Haptics, and Reduce-motion prefs get a home; Done is pinned to the bottom while the list scrolls independently. Calibration screen: two stages. OVERVIEW shows the current correction (Pitch/Roll offsets), the Thoroughness selector, and Calibrate / Reset to phone defaults / Done. CAPTURING shows ONLY capture + Cancel; Cancel restores the prior calibration (saved value is never touched mid-flow). Instructions centered; outlined buttons given visible borders. Thoroughness: Simple (2-point, 0/180) or Thorough (4-point, 0/90/180/270). Generalized deriveSurfaceFromSamples averages a symmetric rotation set - the true tilt sums to zero, so the mean is the device bias; 4-point also cancels each axis twice and averages more noise. Two new unit tests (2-point equivalence, 4-point bias recovery). 61 tests passing; assembleDebug clean. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
On the Level
Offline-first Android pocket toolset: a trustworthy level, angle meter, and calibrated screen ruler (Pro). Kotlin + Jetpack Compose, single module, no backend.
- BRIEF.md — the authoritative v1 product & technical brief
- AUDIT.md — audit of the brief; the amendments it lists are incorporated
- resources/ — concept board (visual direction)
Building
Open in Android Studio, or:
./gradlew assembleDebug # build
./gradlew testDebugUnitTest # measurement-math unit tests
Scaffold status
The project skeleton follows BRIEF.md §Sensor and measurement architecture. Implemented and tested:
core/sensors— sensor selection (game rotation vector → gravity → low-passed accelerometer), device-frame gravity stream, and the pure measurement math: orientation mapping, two-sample per-mode calibration (derived in angle space, applied in vector space so it stays correct away from zero), EMA smoothing, lock hysteresis/dwell/debounce, display deadband, placement validity, and the sensor-vector contract (all sources emit device-frame world-up; flat = +9.81 on Z, pinned bySensorContractTest). All unit-tested.core/settings— DataStore preferences and per-mode calibration persistence.core/billing— entitlement interface with a stub (free-tier) implementation.feature/level,feature/angle— live numeric scaffolds wired to the real sensor pipeline, with manual Surface|Edge selection, placement-validity hints, lock state (locked label states the tolerance so it can never contradict the rounded readout), and directional hold-to-zero (vector reference, not magnitude subtraction).feature/ruler,feature/tools— static placeholders.
Not yet implemented (deliberately — see TODO markers):
- The tactile vial visuals and the spring-animated display value (value 3 of 3 in the brief); scaffold screens render the deadbanded stable value directly.
- Guided calibration flow UI (math and persistence are done).
- Edge-mode readout counter-rotation on the portrait-locked activity.
- Play Billing implementation of
ProEntitlementRepository. - Screen ruler measurement UI and per-display scale persistence.
- Audio cue, reduced-motion behaviors, preferences UI.