- Add dirty flags to PyScene and UIFrame to track when sorting is needed
- Implement lazy sorting - only sort when z_index changes or elements are added/removed
- Make Frame children respect z_index (previously rendered in insertion order only)
- Update UIDrawable::set_int to notify when z_index changes
- Mark collections dirty on append, remove, setitem, and slice operations
- Remove per-frame vector copy in PyScene::render for better performance
Performance improvement: Static scenes now use O(1) check instead of O(n log n) sort every frame
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Major fixes:
- Fixed --exec entering Python REPL instead of game loop
- Resolved screenshot transparency issue (requires timer callbacks)
- Added debug output to trace Python initialization
Test suite created:
- 13 comprehensive tests covering all Python-exposed methods
- Tests use timer callback pattern for proper game loop interaction
- Discovered multiple critical bugs and missing features
Critical bugs found:
- Grid class segfaults on instantiation (blocks all Grid functionality)
- Issue #78 confirmed: Middle mouse click sends 'C' keyboard event
- Entity property setters have argument parsing errors
- Sprite texture setter returns improper error
- keypressScene() segfaults on non-callable arguments
Documentation updates:
- Updated CLAUDE.md with testing guidelines and TDD practices
- Created test reports documenting all findings
- Updated ROADMAP.md with test results and new priorities
The Grid segfault is now the highest priority as it blocks all Grid-based functionality.
John McCardle