62 lines
2.9 KiB
Markdown
62 lines
2.9 KiB
Markdown
# Old Man Glitch Decoder
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A single-file, dependency-free recreation of **Old Man Name Generator 2**, a
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Pokémon Red/Blue/Yellow tool originally hosted on Glitch City Laboratories
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and long since offline (recovered from an Internet Archive Wayback Machine
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capture). Type a 7-character trainer name and see what the in-game "Old Man
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glitch" would actually encounter with it.
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## What it does
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In Gen 1, walking away from the Old Man in Viridian City right after he
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"shows you how to catch a Pokémon" can trigger a glitch encounter built from
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raw bytes of your trainer's name:
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- Positions **3, 5, and 7** of the name are each read as a Pokémon species
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byte.
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- Positions **2, 4, and 6** are each read as that encounter's level byte.
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- Position **1** is never read — it has no effect on the outcome.
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The species comes from Gen 1's internal character/index table: every
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nameable character (A–Z, a–z, digits, and a handful of symbols) has a raw
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byte value from 128–255, and that same byte doubles as a species ID. The
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"level" isn't computed at all — it's printed as the identical raw byte
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value, which is why these encounters always show absurd levels (128–255)
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instead of the normal 1–100.
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## Usage
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Open `index.html` directly in a browser. There's no build step, no server,
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and no external requests — the page is fully self-contained.
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## Files
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| Path | Purpose |
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|---|---|
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| `index.html` | The app. CSS and JS are inlined directly into the page (see [Inlining](#why-inlined) below), so this one file is all you need to run or share it. |
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| `app.css` / `app.js` | Human-readable, unminified source of the styles/script that are inlined into `index.html`. Edit these, then re-minify and re-inline into `index.html` when publishing a change. |
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| `data/charmap.json` | The full character → Gen 1 byte value → species lookup table, generated from the source spreadsheet. Source of truth for `app.js`'s inlined data. |
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| `data/charmap.min.json` | Minified copy of the same table. |
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| `csp-hash.py` | Prints the `sha256-...` CSP tokens for `index.html`'s inline `<style>`/`<script>` blocks, for a host that locks down `Content-Security-Policy` to hashes instead of `'unsafe-inline'`. Re-run after re-inlining. |
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| `CHANGELOG.md` | Release history. |
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| `LICENSE` | GPLv3. |
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### Why inlined?
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`index.html` bundles its CSS and JS inline rather than loading `app.css`
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and `app.js` as separate requests. For a page this small, that trades
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per-file browser caching for fewer round trips — worth it on a slow
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connection for a single-visit tool like this one, at the cost of editing
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convenience (hence keeping the unminified sources alongside it).
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## Data source / credits
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- Character-to-species mapping derived from the internal Gen 1 index table
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(`Decimal` / `R/B/Y Pokémon` / `R/B/Y Letter` columns).
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- Logic reverse-engineered from the archived "Old Man Name Generator 2"
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page, originally by Abwayax and the Glitch City Laboratories team.
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## License
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GPLv3 — see [LICENSE](LICENSE).
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