---
id: GAL-43
title: Replace placeholder geometric shapes with actual sprites
status: Todo
parent: GAL-42
labels: [polish, visuals]
---

# GAL-43: Replace placeholder geometric shapes with actual sprites

Replace placeholder geometric shapes with actual sprites.

## Acceptance criteria

- [ ] `Player`, `Bullet`, `EnemyBullet`, and both `EnemyType::Grunt` / `EnemyType::Boss` are rendered via `Sprite` components loaded from `assets/`, not coloured meshes.
- [ ] Asset paths centralised (e.g. constants in `constants.rs`) so swapping art is a one-line change.
- [ ] Hitbox sizes either preserved or recalibrated; existing collision tests still pass.
- [ ] Z-ordering preserved (player above starfield, bullets above enemies, beam below player).
- [ ] Falls back gracefully if an asset is missing (warn, do not panic at runtime).

## Integration test hints

- Unit-test `spawn_player` (and equivalents) inserts a `Sprite` component referencing the expected `Handle<Image>`.
- Run `nix run .#take-screenshots -- ./target/debug/bglga 3 6 1 ./shots` before and after; visually compare frames for regressions in placement.
- Existing collision tests: ensure they still pass with the new sprite-derived hitbox sizes (or update constants in `constants.rs` and the tests in lockstep).