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Add animation.ksy documenting the binary format for LEGO Island's animation files, including keyframe data, actor references, and optional camera animation. Includes sample file pns065rd.ani.
72 lines
2.6 KiB
Markdown
72 lines
2.6 KiB
Markdown
# LEGO Island File Format Documentation
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This folder contains documentation for LEGO Island's custom binary file formats using [Kaitai Struct](https://kaitai.io/), a declarative language for describing binary data structures.
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## What is Kaitai Struct?
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Kaitai Struct allows you to define binary formats in a YAML-based `.ksy` file, which can then be:
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- Compiled into parser libraries for [many programming languages](https://kaitai.io/#quick-start) (C++, Python, JavaScript, etc.)
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- Visualized interactively using the [Kaitai Struct Visualizer](https://github.com/kaitai-io/kaitai_struct_visualizer)
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- Dumped to human-readable formats using `ksdump`
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<img width="1877" height="706" alt="image" src="https://github.com/user-attachments/assets/0d124219-1208-48ce-83bb-f433d9bb84b1" />
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## Documented Formats
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| File | Extension | Description |
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|------|-----------|-------------|
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| [`savegame.ksy`](/docs/savegame.ksy) | `.GS` | Main game save data (game state, progress, customizations) |
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| [`players.ksy`](/docs/players.ksy) | `.gsi` | Player profile save data (usernames) |
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| [`history.ksy`](/docs/history.ksy) | `.gsi` | Score history and high scores |
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| [`animation.ksy`](/docs/animation.ksy) | `.ani` | Animation data (keyframes, actor references, camera animation) |
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## Using the Tools
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### Installation
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See the [Kaitai Struct Visualizer installation instructions](https://github.com/kaitai-io/kaitai_struct_visualizer?tab=readme-ov-file#downloading-and-installing) for setup details.
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### Kaitai Struct Visualizer (ksv)
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The [Kaitai Struct Visualizer](https://github.com/kaitai-io/kaitai_struct_visualizer) (`ksv`) provides an interactive terminal UI for exploring binary files.
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```bash
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# View a save game file
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ksv samples/G0.GS savegame.ksy
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# View a Players.gsi file
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ksv samples/Players.gsi players.ksy
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# View a History.gsi file
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ksv samples/History.gsi history.ksy
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# View an animation file
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ksv samples/pns065rd.ani animation.ksy
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```
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### Kaitai Struct Dump (ksdump)
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`ksdump` outputs the parsed structure as JSON or YAML for scripting and inspection.
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```bash
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# Dump a save game to JSON
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ksdump --format json samples/G0.GS savegame.ksy
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# Dump Players.gsi to JSON
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ksdump --format json samples/Players.gsi players.ksy
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# Dump History.gsi to YAML
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ksdump --format yaml samples/History.gsi history.ksy
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# Dump an animation file to JSON
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ksdump --format json samples/pns065rd.ani animation.ksy
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```
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## Sample Files
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The [`samples/`](/docs/samples/) directory contains example files for testing:
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- `G0.GS`, `G1.GS`, `G2.GS` - Sample main game save files (slots 0, 1, 2)
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- `Players.gsi` - Sample player profile data
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- `History.gsi` - Sample score history data
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- `pns065rd.ani` - Sample animation file
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