---
id: GAL-48
title: Add sound effects
status: Todo
parent: GAL-46
labels: [polish, audio]
---

# GAL-48: Add sound effects (shooting, explosions, player death, tractor beam, etc.)

Add sound effects (shooting, explosions, player death, tractor beam, etc.).

## Acceptance criteria

- [ ] Distinct SFX for: player shoot, enemy shoot, enemy explosion, player death, tractor beam start, stage clear.
- [ ] SFX triggered via Bevy events (e.g. `EventWriter<PlaySfx>`), not direct calls scattered through gameplay systems.
- [ ] No duplicate playback in a single frame for a single source (e.g. one shot = one click).
- [ ] SFX volume independent from music channel (see GAL-49).
- [ ] Asset paths centralised so re-skinning is local to one file.

## Integration test hints

- Tick world: simulate shoot input → assert exactly one `PlaySfx(Shoot)` event emitted that frame.
- Despawn an enemy via a bullet collision → assert exactly one `PlaySfx(Explosion)` event.
- Activate a Boss `CaptureBeam` (insert `TractorBeam` component) → assert one `PlaySfx(BeamStart)` event per beam, not per frame the beam exists.