# Have Claude write an Aseprite extension that paints isometric worlds from brushes

> A game artist tired of hand-drawing hundreds of grass tiles spent a couple of weeks directing Claude to write the Lua for an Aseprite extension: SimCity-style brushes for hills, paths, ponds and trees that redraw only the area touched, with trees grown in 3D first and drawn back to pixels with the same camera.

- URL: https://paperchasewebb.ai/bots/marketplace/items/have-claude-write-an-aseprite-extension-that-paints-isometric-worlds-from-brushes/
- Type: Agent use case pack
- Category: Creative and video
- By: PaperChaseWebb
- Works with: Claude (named in the listing); Plain .md
- Price: Free USD
- Difficulty: Intermediate
- Setup time: 30 min
- Time to result: One working session
- Format: Markdown (.md) file, have-claude-write-an-aseprite-extension-that-paints-isometric-worlds-from-brushes.md
- Version: 1.0, updated 2026-10-30
- License: Personal and commercial use. Credit the original source when you share the workflow.

## What you end up with

His main point: the agent writes working code but has no taste of its own, so every 'make it look nice' needed him pointing at specific pixels.

## What you get

- A plain-language summary of the workflow
- A fill-in prompt template
- What to watch out for
- A link to the original source

## Who it is for

Builders who already use AI agents and want a proven workflow they can copy into their own project.

## Tools needed

- Claude: wrote nearly all the Lua
- Aseprite: the pixel art editor being extended
- Godot: the engine the tiles were exported to
- The artist: designed, tested and judged every result
- You need: An AI coding agent or chat model
- You need: A small real task to try it on

Cost to run: Free with the agent plan you already use.

## How it works

1. **Describe the tool as brushes and the exact tiles each brush must produ.** Describe the tool as brushes and the exact tiles each brush must produce. Expected: Done before you move to the next step.
2. **Ask for partial redraws so the tool stays live on large maps.** Ask for partial redraws so the tool stays live on large maps. Expected: Done before you move to the next step.
3. **Keep one fixed test map and compare screenshots after every change.** Keep one fixed test map and compare screenshots after every change. Expected: Done before you move to the next step.
4. **Point at exact pixels when something looks wrong instead of asking for.** Point at exact pixels when something looks wrong instead of asking for nicer. Expected: Done before you move to the next step.
5. **Check the export in the game engine early, since coordinate mix-ups sh.** Check the export in the game engine early, since coordinate mix-ups show up there first. Expected: Done before you move to the next step.

## Sample prompt: Workflow template (Claude, Aseprite)

```
Apply this workflow to [your project]:
1. Describe the tool as brushes and the exact tiles each brush must produce.
2. Ask for partial redraws so the tool stays live on large maps.
3. Keep one fixed test map and compare screenshots after every change.
4. Point at exact pixels when something looks wrong instead of asking for nicer.
5. Check the export in the game engine early, since coordinate mix-ups show up there first.
Stop and ask me before anything irreversible: deploys, payments, sends or deletes.
```

Adapted by PaperChaseWebb. Not the original author's prompt.

## Free preview of have-claude-write-an-aseprite-extension-that-paints-isometric-worlds-from-brushes.md

````markdown
# Have Claude write an Aseprite extension that paints isometric worlds from brushes

PaperChase agent use case (free feed entry), version 1.0. Source: [u/antahonist on r/vibecoding](https://www.reddit.com/r/vibecoding/comments/1xium30/im_a_mid_artist_so_i_made_claude_help_me_build_a/), 2026-10-29.

## What they did

He acted as the product manager: design, test, and say exactly what looked wrong. Hard parts included tile variants that did not line up because two coordinate systems were mixed, and Godot's terrain solver leaving broken corners on concave cliffs, which they fixed by placing tiles from corner pieces directly.

## Worth knowing

His main point: the agent writes working code but has no taste of its own, so every 'make it look nice' needed him pointing at specific pixels. Build a fixed test map so you can compare each change against the last one.
````

## Worth knowing

- His main point: the agent writes working code but has no taste of its own, so every 'make it look nice' needed him pointing at specific pixels. Build a fixed test map so you can compare each change against the last one.
- Figures are as reported by the original author and were not re-measured by us.

## Questions

**Where does this come from?** A public post credited to u/antahonist on r/vibecoding. Source: https://www.reddit.com/r/vibecoding/comments/1xium30/im_a_mid_artist_so_i_made_claude_help_me_build_a/

**Is it free?** Yes. Feed entries are free to read and download.

## How to get it

Free sample. Download it directly at https://paperchasewebb.ai/bots/marketplace/items/have-claude-write-an-aseprite-extension-that-paints-isometric-worlds-from-brushes/, no signup.

Seller: PaperChaseWebb Inc., mgmt@paperchasewebb.com