# Spritesheets

> Full art brief — every sheet with dimensions, frame maps, and drawing
> notes — lives in [`sprites.md`](../sprites.md) at the project root.

Art is optional: any sheet that is missing (or too small for a requested
frame) gets a procedurally generated placeholder baked in its entry's `color`
from the config JSON, so the game always runs.

## Layout

Every sheet is a **horizontal strip of square frames**, left to right. The
`frame` field in the config JSON is the 0-based index into the strip. Frames
are **192×192** (walls can override via `textureSize` in `walls.json`; baked
output is always 192×192).

Expected files (paths are what `src/config/*.json` references — change them
there if you prefer a different arrangement):

| File                          | Used by         | Notes |
| ----------------------------- | --------------- | ----- |
| `assets/textures/walls.png`   | `walls.json`    | Opaque. Frame per wall id (frame 0 = Gray Brick, …) |
| `assets/textures/overlays.png`| `overlays.json` | **Transparent PNG** — composited over wall textures |
| `assets/sprites/items.png`    | `items.json`    | **Transparent PNG** — billboard props (plant, lamp, …) |
| `assets/sprites/enemies.png`  | `enemies.json`  | **Transparent PNG** — one frame per enemy type for now |

A 5-frame walls sheet is therefore 960×192; a 3-frame enemies sheet 576×192.

You can also point different entries at different files — each unique
`texture` path is loaded once and shared.