# TODO

## ~~Distance-based sound effects~~ ✓
Implemented: `audio_set_listener()`, `audio_play_sound_at()` with linear
attenuation and stereo panning. Used by enemy death, asteroid impact, and
powerup pickup.

## ~~Spacecraft art and entity~~ ✓
Implemented: spacecraft PNG spritesheet (5 frames, 80x48 each), full entity
with state machine (FLYING_IN → LANDING → LANDED → TAKEOFF → FLYING_OUT →
DONE), engine/synth sounds, thruster particles, level intro sequence with
deferred player spawn.

## Large map support (5000x5000)
Audit the engine for anything that breaks or becomes slow at very large map
sizes. Key areas to check:
- Tile layer allocation (`uint16_t *` for 25M tiles)
- Tilemap rendering culling (already viewport-clipped, verify correctness)
- Physics / collision queries (should only check nearby tiles)
- Entity updates (currently iterates full pool regardless of distance)
- Camera bounds and coordinate overflow (float precision at large coords)
- Level file parsing (row lines could exceed fgets buffer at 5000+ columns)

## Spacecraft at level exit
Ship landing at exit zone when player approaches — player enters, ship takes
off, triggers level transition. The intro/start sequence is done; this is the
exit counterpart.

## Asteroid refinement
- Reduce asteroid count significantly — occasional hazard, not a barrage
- Add slight horizontal drift so they fall at an angle rather than straight down
- Increase fall speed for more impact
- Stagger spawns more widely across the level