All tutorial parts (1-13) used the old string-based key/action
comparison API removed in 6d5e99a. Every handle_keys function now
uses mcrfpy.Key.* and mcrfpy.InputState.PRESSED enums.
Additional fixes across all parts:
- Replace manual FOV computation with ColorLayer.draw_fov() which
handles FOV calculation and explored-state tracking in one call
- Replace old grid.add_layer("color") with ColorLayer() constructor
- Fix entity removal bug: entities.remove(index) -> remove(entity_ref)
- Remove manual exploration tracking (draw_fov handles it internally)
- Use tuple positions for compute_fov/is_in_fov: (x, y) not x, y
All 14 parts (0-13) tested and passing in headless mode.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
John McCardle
1805b985bd