# Asset Sources — Replacing Procedural Content

Goal: move away from procedurally generated animations, maps, and sounds.
Everything below is free for commercial use unless marked otherwise.
**CC0 = no attribution needed. CC-BY = must credit the author.**

## Animations

| Source | License | Notes |
|---|---|---|
| [Mixamo](https://www.mixamo.com) | Free (Adobe account) | 2500+ humanoid clips, the de-facto standard skeleton this pipeline targets. No API — download clips manually once. |
| [Quaternius Universal Animation Library](https://quaternius.com) | CC0 | 500+ clips on a Mixamo-compatible rig. Drop straight into `assets/characters/animations/`. |
| [Kenney Character Assets](https://kenney.nl/assets) | CC0 | Simple rigged characters + basic clips. |
| Sketchfab (filter: animated + downloadable) | per-model | Many characters ship with their own baked animations; `pipeline.py --rigged` keeps them. |

## Character models

| Source | License | Notes |
|---|---|---|
| [Sketchfab downloads](https://sketchfab.com/search?features=downloadable&type=models) | per-model (shown by our search tool) | Primary source — use `tools/sketchfab_import.py search`. |
| [Quaternius](https://quaternius.com) | CC0 | Stylized low-poly packs, many pre-rigged. |
| [KayKit](https://kaylousberg.itch.io) | CC0 | Character + dungeon packs, rigged, game-ready. |
| [PolyPizza](https://poly.pizza) | mostly CC0/CC-BY | Searchable low-poly aggregator. |

## Maps / environments (replace the procedural arena)

| Source | License | Notes |
|---|---|---|
| [Kenney kits](https://kenney.nl/assets) (City, Prototype, Platformer) | CC0 | Modular kits — greybox with Prototype textures, dress with City kits. |
| [KayKit Dungeon/City packs](https://kaylousberg.itch.io) | CC0 | Modular, snaps to grid, ideal for arena shooters. |
| [Sketchfab scenes](https://sketchfab.com) | per-model | Whole environments exist; check poly counts before importing. |
| [ambientCG](https://ambientcg.com) | CC0 | PBR materials/textures for level surfaces. |

Workflow: block out in Godot with CSG/GridMap for movement flow first, then
replace geometry with kit pieces. Movement (wall-run surfaces, slide ramps)
should drive layout, not the other way around.

## Sounds

See [SOUND_DESIGN.md](SOUND_DESIGN.md) for the full plan. Short list:

| Source | License | Notes |
|---|---|---|
| [Sonniss GDC Bundles](https://sonniss.com/gameaudiogdc) | Royalty-free | 100+ GB of pro game audio, free, commercial OK. THE first stop. |
| [Kenney Audio packs](https://kenney.nl/assets?q=audio) | CC0 | UI, impacts, footsteps, sci-fi weapons. |
| [Freesound](https://freesound.org) (filter CC0) | CC0/CC-BY | Searchable; check license per file. |
| [BOOM Library free packs](https://www.boomlibrary.com/free-sound-effects/) | Royalty-free | Cinematic-quality freebies. |
| [99Sounds](https://99sounds.org) | Royalty-free | Weapon/impact packs. |

## Attribution bookkeeping

- Sketchfab: `tools/sketchfab_import.py` writes `<model>.license.json` next to
  every download; the pipeline copies it beside the final skin GLB.
- Anything CC-BY (models or sounds) must appear in a credits screen.
  Grep for license files before shipping: `ls assets/**/*.license.json`.